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qt3/src/table/qtable.cpp

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/****************************************************************************
**
** Implementation of QTable widget class
**
** Created : 000607
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the table module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file. Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#include "qglobal.h"
#if defined(Q_CC_BOR)
// needed for qsort() because of a std namespace problem on Borland
#include "qplatformdefs.h"
#endif
#include "qtable.h"
#ifndef QT_NO_TABLE
#include <qpainter.h>
#include <qlineedit.h>
#include <qcursor.h>
#include <qapplication.h>
#include <qtimer.h>
#include <qobjectlist.h>
#include <qiconset.h>
#include <qcombobox.h>
#include <qcheckbox.h>
#include <qdragobject.h>
#include <qevent.h>
#include <qlistbox.h>
#include <qstyle.h>
#include <qdatatable.h>
#include <qvalidator.h>
#include <stdlib.h>
#include <limits.h>
static bool qt_update_cell_widget = TRUE;
static bool qt_table_clipper_enabled = TRUE;
#ifndef QT_INTERNAL_TABLE
Q_EXPORT
#endif
void qt_set_table_clipper_enabled( bool enabled )
{
qt_table_clipper_enabled = enabled;
}
class QM_EXPORT_TABLE QTableHeader : public QHeader
{
friend class QTable;
Q_OBJECT
public:
enum SectionState {
Normal,
Bold,
Selected
};
QTableHeader( int, QTable *t, QWidget* parent=0, const char* name=0 );
~QTableHeader() {};
void addLabel( const QString &s, int size );
void setLabel( int section, const QString & s, int size = -1 );
void setLabel( int section, const QIconSet & iconset, const QString & s,
int size = -1 );
void setLabels(const QStringList & labels);
void removeLabel( int section );
void setSectionState( int s, SectionState state );
void setSectionStateToAll( SectionState state );
SectionState sectionState( int s ) const;
int sectionSize( int section ) const;
int sectionPos( int section ) const;
int sectionAt( int section ) const;
void setSectionStretchable( int s, bool b );
bool isSectionStretchable( int s ) const;
void updateCache();
signals:
void sectionSizeChanged( int s );
protected:
void paintEvent( QPaintEvent *e );
void paintSection( QPainter *p, int index, const QRect& fr );
void mousePressEvent( QMouseEvent *e );
void mouseMoveEvent( QMouseEvent *e );
void mouseReleaseEvent( QMouseEvent *e );
void mouseDoubleClickEvent( QMouseEvent *e );
void resizeEvent( QResizeEvent *e );
private slots:
void doAutoScroll();
void sectionWidthChanged( int col, int os, int ns );
void indexChanged( int sec, int oldIdx, int newIdx );
void updateStretches();
void updateWidgetStretches();
private:
void updateSelections();
void saveStates();
void setCaching( bool b );
void swapSections( int oldIdx, int newIdx, bool swapTable = TRUE );
bool doSelection( QMouseEvent *e );
void sectionLabelChanged( int section );
void resizeArrays( int n );
private:
QMemArray<int> states, oldStates;
QMemArray<bool> stretchable;
QMemArray<int> sectionSizes, sectionPoses;
bool mousePressed;
int pressPos, startPos, endPos;
QTable *table;
QTimer *autoScrollTimer;
QWidget *line1, *line2;
bool caching;
int resizedSection;
bool isResizing;
int numStretches;
QTimer *stretchTimer, *widgetStretchTimer;
QTableHeaderPrivate *d;
};
#ifdef _WS_QWS_
# define NO_LINE_WIDGET
#endif
struct QTablePrivate
{
QTablePrivate() : hasRowSpan( FALSE ), hasColSpan( FALSE ),
inMenuMode( FALSE ), redirectMouseEvent( FALSE )
{
hiddenRows.setAutoDelete( TRUE );
hiddenCols.setAutoDelete( TRUE );
}
uint hasRowSpan : 1;
uint hasColSpan : 1;
uint inMenuMode : 1;
uint redirectMouseEvent : 1;
QIntDict<int> hiddenRows, hiddenCols;
QTimer *geomTimer;
int lastVisRow;
int lastVisCol;
};
struct QTableHeaderPrivate
{
#ifdef NO_LINE_WIDGET
int oldLinePos;
#endif
};
static bool isRowSelection( QTable::SelectionMode selMode )
{
return selMode == QTable::SingleRow || selMode == QTable::MultiRow;
}
/*!
\class QTableSelection
\brief The QTableSelection class provides access to a selected area in a
QTable.
\if defined(commercial)
It is part of the <a href="commercialeditions.html">Qt Enterprise Edition</a>.
\endif
\ingroup advanced
\module table
The selection is a rectangular set of cells in a QTable. One of
the rectangle's cells is called the anchor cell; this is the cell
that was selected first. The init() function sets the anchor and
the selection rectangle to exactly this cell; the expandTo()
function expands the selection rectangle to include additional
cells.
There are various access functions to find out about the area:
anchorRow() and anchorCol() return the anchor's position;
leftCol(), rightCol(), topRow() and bottomRow() return the
rectangle's four edges. All four are part of the selection.
A newly created QTableSelection is inactive -- isActive() returns
FALSE. You must use init() and expandTo() to activate it.
\sa QTable QTable::addSelection() QTable::selection()
QTable::selectCells() QTable::selectRow() QTable::selectColumn()
*/
/*!
Creates an inactive selection. Use init() and expandTo() to
activate it.
*/
QTableSelection::QTableSelection()
: active( FALSE ), inited( FALSE ), tRow( -1 ), lCol( -1 ),
bRow( -1 ), rCol( -1 ), aRow( -1 ), aCol( -1 )
{
}
/*!
Creates an active selection, starting at \a start_row and \a
start_col, ending at \a end_row and \a end_col.
*/
QTableSelection::QTableSelection( int start_row, int start_col, int end_row, int end_col )
: active( FALSE ), inited( FALSE ), tRow( -1 ), lCol( -1 ),
bRow( -1 ), rCol( -1 ), aRow( -1 ), aCol( -1 )
{
init( start_row, start_col );
expandTo( end_row, end_col );
}
/*!
Sets the selection anchor to cell \a row, \a col and the selection
to only contain this cell. The selection is not active until
expandTo() is called.
To extend the selection to include additional cells, call
expandTo().
\sa isActive()
*/
void QTableSelection::init( int row, int col )
{
aCol = lCol = rCol = col;
aRow = tRow = bRow = row;
active = FALSE;
inited = TRUE;
}
/*!
Expands the selection to include cell \a row, \a col. The new
selection rectangle is the bounding rectangle of \a row, \a col
and the previous selection rectangle. After calling this function
the selection is active.
If you haven't called init(), this function does nothing.
\sa init() isActive()
*/
void QTableSelection::expandTo( int row, int col )
{
if ( !inited )
return;
active = TRUE;
if ( row < aRow ) {
tRow = row;
bRow = aRow;
} else {
tRow = aRow;
bRow = row;
}
if ( col < aCol ) {
lCol = col;
rCol = aCol;
} else {
lCol = aCol;
rCol = col;
}
}
/*!
Returns TRUE if \a s includes the same cells as the selection;
otherwise returns FALSE.
*/
bool QTableSelection::operator==( const QTableSelection &s ) const
{
return ( s.active == active &&
s.tRow == tRow && s.bRow == bRow &&
s.lCol == lCol && s.rCol == rCol );
}
/*!
\fn bool QTableSelection::operator!=( const QTableSelection &s ) const
Returns TRUE if \a s does not include the same cells as the
selection; otherwise returns FALSE.
*/
/*!
\fn int QTableSelection::topRow() const
Returns the top row of the selection.
\sa bottomRow() leftCol() rightCol()
*/
/*!
\fn int QTableSelection::bottomRow() const
Returns the bottom row of the selection.
\sa topRow() leftCol() rightCol()
*/
/*!
\fn int QTableSelection::leftCol() const
Returns the left column of the selection.
\sa topRow() bottomRow() rightCol()
*/
/*!
\fn int QTableSelection::rightCol() const
Returns the right column of the selection.
\sa topRow() bottomRow() leftCol()
*/
/*!
\fn int QTableSelection::anchorRow() const
Returns the anchor row of the selection.
\sa anchorCol() expandTo()
*/
/*!
\fn int QTableSelection::anchorCol() const
Returns the anchor column of the selection.
\sa anchorRow() expandTo()
*/
/*!
\fn int QTableSelection::numRows() const
Returns the number of rows in the selection.
\sa numCols()
*/
int QTableSelection::numRows() const
{
return ( tRow < 0 ) ? 0 : bRow - tRow + 1;
}
/*!
Returns the number of columns in the selection.
\sa numRows()
*/
int QTableSelection::numCols() const
{
return ( lCol < 0 ) ? 0 : rCol - lCol + 1;
}
/*!
\fn bool QTableSelection::isActive() const
Returns whether the selection is active or not. A selection is
active after init() \e and expandTo() have been called.
*/
/*!
\fn bool QTableSelection::isEmpty() const
Returns whether the selection is empty or not.
\sa numRows(), numCols()
*/
/*!
\class QTableItem
\brief The QTableItem class provides the cell content for QTable cells.
\if defined(commercial)
It is part of the <a href="commercialeditions.html">Qt Enterprise Edition</a>.
\endif
\ingroup advanced
\module table
For many applications QTableItems are ideal for presenting and
editing the contents of QTable cells. In situations where you need
to create very large tables you may prefer an alternative approach
to using QTableItems: see the notes on large tables.
A QTableItem contains a cell's data, by default, a string and a
pixmap. The table item also holds the cell's display size and how
the data should be aligned. The table item specifies the cell's
\l EditType and the editor used for in-place editing (by default a
QLineEdit). If you want checkboxes use \l{QCheckTableItem}, and if
you want comboboxes use \l{QComboTableItem}. The \l EditType (set
in the constructor) determines whether the cell's contents may be
edited.
If a pixmap is specified it is displayed to the left of any text.
You can change the text or pixmap with setText() and setPixmap()
respectively. For text you can use setWordWrap().
When sorting table items the key() function is used; by default
this returns the table item's text(). Reimplement key() to
customize how your table items will sort.
Table items are inserted into a table using QTable::setItem(). If
you insert an item into a cell that already contains a table item
the original item will be deleted.
Example:
\code
for ( int row = 0; row < table->numRows(); row++ ) {
for ( int col = 0; col < table->numCols(); col++ ) {
table->setItem( row, col,
new QTableItem( table, QTableItem::WhenCurrent, QString::number( row * col ) ) );
}
}
\endcode
You can move a table item from one cell to another, in the same or
a different table, using QTable::takeItem() and QTable::setItem()
but see also QTable::swapCells().
Table items can be deleted with delete in the standard way; the
table and cell will be updated accordingly.
Note, that if you have a table item that is not currently in a table
then anything you do to that item other than insert it into a table
will result in undefined behaviour.
Reimplement createEditor() and setContentFromEditor() if you want
to use your own widget instead of a QLineEdit for editing cell
contents. Reimplement paint() if you want to display custom
content.
It is important to ensure that your custom widget can accept the
keyboard focus, so that the user can use the tab key to navigate the
table as normal. Therefore, if the widget returned by createEditor()
does not itself accept the keyboard focus, it is necessary to
nominate a child widget to do so on its behalf. For example, a
QHBox with two child QLineEdit widgets may use one of them to
accept the keyboard focus:
\code
QWidget* MyTableItem::createEditor() const
{
QHBox* hbox = new QHBox( table()->viewport() );
hbox->setFocusProxy(new QLineEdit( hbox ));
new QLineEdit( hbox );
return hbox;
}
\endcode
By default, table items may be replaced by new QTableItems
during the lifetime of a QTable. Therefore, if you create your
own subclass of QTableItem, and you want to ensure that
this does not happen, you must call setReplaceable(FALSE)
in the constructor of your subclass.
\img qtableitems.png Table Items
\sa QCheckTableItem QComboTableItem
*/
/*!
\fn QTable *QTableItem::table() const
Returns the QTable the table item belongs to.
\sa QTable::setItem() QTableItem()
*/
/*!
\enum QTableItem::EditType
\target wheneditable
This enum is used to define whether a cell is editable or
read-only (in conjunction with other settings), and how the cell
should be displayed.
\value Always
The cell always \e looks editable.
Using this EditType ensures that the editor created with
createEditor() (by default a QLineEdit) is always visible. This
has implications for the alignment of the content: the default
editor aligns everything (even numbers) to the left whilst
numerical values in the cell are by default aligned to the right.
If a cell with the edit type \c Always looks misaligned you could
reimplement createEditor() for these items.
\value WhenCurrent
The cell \e looks editable only when it has keyboard focus (see
QTable::setCurrentCell()).
\value OnTyping
The cell \e looks editable only when the user types in it or
double-clicks it. It resembles the \c WhenCurrent functionality
but is, perhaps, nicer.
The \c OnTyping edit type is the default when QTableItem objects
are created by the convenience functions QTable::setText() and
QTable::setPixmap().
\value Never The cell is not editable.
The cell is actually editable only if QTable::isRowReadOnly() is
FALSE for its row, QTable::isColumnReadOnly() is FALSE for its
column, and QTable::isReadOnly() is FALSE.
QComboTableItems have an isEditable() property. This property is
used to indicate whether the user may enter their own text or are
restricted to choosing one of the choices in the list.
QComboTableItems may be interacted with only if they are editable
in accordance with their EditType as described above.
*/
/*!
Creates a table item that is a child of table \a table with no
text. The item has the \l EditType \a et.
The table item will use a QLineEdit for its editor, will not
word-wrap and will occupy a single cell. Insert the table item
into a table with QTable::setItem().
The table takes ownership of the table item, so a table item
should not be inserted into more than one table at a time.
*/
QTableItem::QTableItem( QTable *table, EditType et )
: txt(), pix(), t( table ), edType( et ), wordwrap( FALSE ),
tcha( TRUE ), rw( -1 ), cl( -1 ), rowspan( 1 ), colspan( 1 )
{
enabled = TRUE;
}
/*!
Creates a table item that is a child of table \a table with text
\a text. The item has the \l EditType \a et.
The table item will use a QLineEdit for its editor, will not
word-wrap and will occupy a single cell. Insert the table item
into a table with QTable::setItem().
The table takes ownership of the table item, so a table item
should not be inserted into more than one table at a time.
*/
QTableItem::QTableItem( QTable *table, EditType et, const QString &text )
: txt( text ), pix(), t( table ), edType( et ), wordwrap( FALSE ),
tcha( TRUE ), rw( -1 ), cl( -1 ), rowspan( 1 ), colspan( 1 )
{
enabled = TRUE;
}
/*!
Creates a table item that is a child of table \a table with text
\a text and pixmap \a p. The item has the \l EditType \a et.
The table item will display the pixmap to the left of the text. It
will use a QLineEdit for editing the text, will not word-wrap and
will occupy a single cell. Insert the table item into a table with
QTable::setItem().
The table takes ownership of the table item, so a table item
should not be inserted in more than one table at a time.
*/
QTableItem::QTableItem( QTable *table, EditType et,
const QString &text, const QPixmap &p )
: txt( text ), pix( p ), t( table ), edType( et ), wordwrap( FALSE ),
tcha( TRUE ), rw( -1 ), cl( -1 ), rowspan( 1 ), colspan( 1 )
{
enabled = TRUE;
}
/*!
The destructor deletes this item and frees all allocated
resources.
If the table item is in a table (i.e. was inserted with
setItem()), it will be removed from the table and the cell it
occupied.
*/
QTableItem::~QTableItem()
{
if ( table() )
table()->takeItem( this );
}
int QTableItem::RTTI = 0;
/*!
Returns the Run Time Type Identification value for this table item
which for QTableItems is 0.
When you create subclasses based on QTableItem make sure that each
subclass returns a unique rtti() value. It is advisable to use
values greater than 1000, preferably large random numbers, to
allow for extensions to this class.
\sa QCheckTableItem::rtti() QComboTableItem::rtti()
*/
int QTableItem::rtti() const
{
return RTTI;
}
/*!
Returns the table item's pixmap or a null pixmap if no pixmap has
been set.
\sa setPixmap() text()
*/
QPixmap QTableItem::pixmap() const
{
return pix;
}
/*!
Returns the text of the table item or QString::null if there is no
text.
To ensure that the current value of the editor is returned,
setContentFromEditor() is called:
\list 1
\i if the editMode() is \c Always, or
\i if editMode() is \e not \c Always but the editor of the cell is
active and the editor is not a QLineEdit.
\endlist
This means that text() returns the original text value of the item
if the editor is a line edit, until the user commits an edit (e.g.
by pressing Enter or Tab) in which case the new text is returned.
For other editors (e.g. a combobox) setContentFromEditor() is
always called so the currently display value is the one returned.
\sa setText() pixmap()
*/
QString QTableItem::text() const
{
QWidget *w = table()->cellWidget( rw, cl );
if ( w && ( edType == Always ||
rtti() == QComboTableItem::RTTI ||
rtti() == QCheckTableItem::RTTI ) )
( (QTableItem*)this )->setContentFromEditor( w );
return txt;
}
/*!
Sets pixmap \a p to be this item's pixmap.
Note that setPixmap() does not update the cell the table item
belongs to. Use QTable::updateCell() to repaint the cell's
contents.
For \l{QComboTableItem}s and \l{QCheckTableItem}s this function
has no visible effect.
\sa QTable::setPixmap() pixmap() setText()
*/
void QTableItem::setPixmap( const QPixmap &p )
{
pix = p;
}
/*!
Changes the table item's text to \a str.
Note that setText() does not update the cell the table item
belongs to. Use QTable::updateCell() to repaint the cell's
contents.
\sa QTable::setText() text() setPixmap() QTable::updateCell()
*/
void QTableItem::setText( const QString &str )
{
txt = str;
}
/*!
This virtual function is used to paint the contents of an item
using the painter \a p in the rectangular area \a cr using the
color group \a cg.
If \a selected is TRUE the cell is displayed in a way that
indicates that it is highlighted.
You don't usually need to use this function but if you want to
draw custom content in a cell you will need to reimplement it.
The painter passed to this function is translated so that 0, 0
is the top-left corner of the item that is being painted.
Note that the painter is not clipped by default in order to get
maximum efficiency. If you want clipping, use
\code
p->setClipRect( table()->cellRect(row, col), QPainter::ClipPainter );
//... your drawing code
p->setClipping( FALSE );
\endcode
*/
void QTableItem::paint( QPainter *p, const QColorGroup &cg,
const QRect &cr, bool selected )
{
p->fillRect( 0, 0, cr.width(), cr.height(),
selected ? cg.brush( QColorGroup::Highlight )
: cg.brush( QColorGroup::Base ) );
int w = cr.width();
int h = cr.height();
int x = 0;
if ( !pix.isNull() ) {
p->drawPixmap( 0, ( cr.height() - pix.height() ) / 2, pix );
x = pix.width() + 2;
}
if ( selected )
p->setPen( cg.highlightedText() );
else
p->setPen( cg.text() );
p->drawText( x + 2, 0, w - x - 4, h,
wordwrap ? (alignment() | WordBreak) : alignment(), text() );
}
/*!
This virtual function creates an editor which the user can
interact with to edit the cell's contents. The default
implementation creates a QLineEdit.
If the function returns 0, the cell is read-only.
The returned widget should preferably be invisible, ideally with
QTable::viewport() as parent.
If you reimplement this function you'll almost certainly need to
reimplement setContentFromEditor(), and may need to reimplement
sizeHint().
\quotefile table/statistics/statistics.cpp
\skipto createEditor
\printto }
\sa QTable::createEditor() setContentFromEditor() QTable::viewport() setReplaceable()
*/
QWidget *QTableItem::createEditor() const
{
QLineEdit *e = new QLineEdit( table()->viewport(), "qt_tableeditor" );
e->setFrame( FALSE );
e->setText( text() );
return e;
}
/*!
Whenever the content of a cell has been edited by the editor \a w,
QTable calls this virtual function to copy the new values into the
QTableItem.
If you reimplement createEditor() and return something that is not
a QLineEdit you will need to reimplement this function.
\quotefile table/statistics/statistics.cpp
\skipto setContentFromEditor
\printto }
\sa QTable::setCellContentFromEditor()
*/
void QTableItem::setContentFromEditor( QWidget *w )
{
QLineEdit *le = ::qt_cast<QLineEdit*>(w);
if ( le ) {
QString input = le->text();
if ( le->validator() )
le->validator()->fixup( input );
setText( input );
}
}
/*!
The alignment function returns how the text contents of the cell
are aligned when drawn. The default implementation aligns numbers
to the right and any other text to the left.
\sa Qt::AlignmentFlags
*/
// ed: For consistency reasons a setAlignment() should be provided
// as well.
int QTableItem::alignment() const
{
bool num;
bool ok1 = FALSE, ok2 = FALSE;
(void)text().toInt( &ok1 );
if ( !ok1 )
(void)text().toDouble( &ok2 ); // ### should be .-aligned
num = ok1 || ok2;
return ( num ? AlignRight : AlignLeft ) | AlignVCenter;
}
/*!
If \a b is TRUE, the cell's text will be wrapped over multiple
lines, when necessary, to fit the width of the cell; otherwise the
text will be written as a single line.
\sa wordWrap() QTable::adjustColumn() QTable::setColumnStretchable()
*/
void QTableItem::setWordWrap( bool b )
{
wordwrap = b;
}
/*!
Returns TRUE if word wrap is enabled for the cell; otherwise
returns FALSE.
\sa setWordWrap()
*/
bool QTableItem::wordWrap() const
{
return wordwrap;
}
/*! \internal */
void QTableItem::updateEditor( int oldRow, int oldCol )
{
if ( edType != Always )
return;
if ( oldRow != -1 && oldCol != -1 )
table()->clearCellWidget( oldRow, oldCol );
if ( rw != -1 && cl != -1 )
table()->setCellWidget( rw, cl, createEditor() );
}
/*!
Returns the table item's edit type.
This is set when the table item is constructed.
\sa EditType QTableItem()
*/
QTableItem::EditType QTableItem::editType() const
{
return edType;
}
/*!
If \a b is TRUE it is acceptable to replace the contents of the
cell with the contents of another QTableItem. If \a b is FALSE the
contents of the cell may not be replaced by the contents of
another table item. Table items that span more than one cell may
not have their contents replaced by another table item.
(This differs from \l EditType because EditType is concerned with
whether the \e user is able to change the contents of a cell.)
\sa isReplaceable()
*/
void QTableItem::setReplaceable( bool b )
{
tcha = b;
}
/*!
This function returns whether the contents of the cell may be
replaced with the contents of another table item. Regardless of
this setting, table items that span more than one cell may not
have their contents replaced by another table item.
(This differs from \l EditType because EditType is concerned with
whether the \e user is able to change the contents of a cell.)
\sa setReplaceable() EditType
*/
bool QTableItem::isReplaceable() const
{
if ( rowspan > 1 || colspan > 1 )
return FALSE;
return tcha;
}
/*!
This virtual function returns the key that should be used for
sorting. The default implementation returns the text() of the
relevant item.
\sa QTable::setSorting()
*/
QString QTableItem::key() const
{
return text();
}
/*!
This virtual function returns the size a cell needs to show its
entire content.
If you subclass QTableItem you will often need to reimplement this
function.
*/
QSize QTableItem::sizeHint() const
{
QSize strutSize = QApplication::globalStrut();
if ( edType == Always && table()->cellWidget( rw, cl ) )
return table()->cellWidget( rw, cl )->sizeHint().expandedTo( strutSize );
QSize s;
int x = 0;
if ( !pix.isNull() ) {
s = pix.size();
s.setWidth( s.width() + 2 );
x = pix.width() + 2;
}
QString t = text();
if ( !wordwrap && t.find( '\n' ) == -1 )
return QSize( s.width() + table()->fontMetrics().width( text() ) + 10,
QMAX( s.height(), table()->fontMetrics().height() ) ).expandedTo( strutSize );
QRect r = table()->fontMetrics().boundingRect( x + 2, 0, table()->columnWidth( col() ) - x - 4, 0,
wordwrap ? (alignment() | WordBreak) : alignment(),
text() );
r.setWidth( QMAX( r.width() + 10, table()->columnWidth( col() ) ) );
return QSize( r.width(), QMAX( s.height(), r.height() ) ).expandedTo( strutSize );
}
/*!
Changes the extent of the QTableItem so that it spans multiple
cells covering \a rs rows and \a cs columns. The top left cell is
the original cell.
\warning This function only works if the item has already been
inserted into the table using e.g. QTable::setItem(). This
function also checks to make sure if \a rs and \a cs are within
the bounds of the table and returns without changing the span if
they are not. In addition swapping, inserting or removing rows and
columns that cross QTableItems spanning more than one cell is not
supported.
\sa rowSpan() colSpan()
*/
void QTableItem::setSpan( int rs, int cs )
{
if ( rs == rowspan && cs == colspan )
return;
if ( !table()->d->hasRowSpan )
table()->d->hasRowSpan = rs > 1;
if ( !table()->d->hasColSpan )
table()->d->hasColSpan = cs > 1;
// return if we are thinking too big...
if ( rw + rs > table()->numRows() )
return;
if ( cl + cs > table()->numCols() )
return;
if ( rw == -1 || cl == -1 )
return;
int rrow = rw;
int rcol = cl;
if ( rowspan > 1 || colspan > 1 ) {
QTable* t = table();
t->takeItem( this );
t->setItem( rrow, rcol, this );
}
rowspan = rs;
colspan = cs;
for ( int r = 0; r < rowspan; ++r ) {
for ( int c = 0; c < colspan; ++c ) {
if ( r == 0 && c == 0 )
continue;
qt_update_cell_widget = FALSE;
table()->setItem( r + rw, c + cl, this );
qt_update_cell_widget = TRUE;
rw = rrow;
cl = rcol;
}
}
table()->updateCell( rw, cl );
QWidget *w = table()->cellWidget( rw, cl );
if ( w )
w->resize( table()->cellGeometry( rw, cl ).size() );
}
/*!
Returns the row span of the table item, usually 1.
\sa setSpan() colSpan()
*/
int QTableItem::rowSpan() const
{
return rowspan;
}
/*!
Returns the column span of the table item, usually 1.
\sa setSpan() rowSpan()
*/
int QTableItem::colSpan() const
{
return colspan;
}
/*!
Sets row \a r as the table item's row. Usually you do not need to
call this function.
If the cell spans multiple rows, this function sets the top row
and retains the height of the multi-cell table item.
\sa row() setCol() rowSpan()
*/
void QTableItem::setRow( int r )
{
rw = r;
}
/*!
Sets column \a c as the table item's column. Usually you will not
need to call this function.
If the cell spans multiple columns, this function sets the
left-most column and retains the width of the multi-cell table
item.
\sa col() setRow() colSpan()
*/
void QTableItem::setCol( int c )
{
cl = c;
}
/*!
Returns the row where the table item is located. If the cell spans
multiple rows, this function returns the top-most row.
\sa col() setRow()
*/
int QTableItem::row() const
{
return rw;
}
/*!
Returns the column where the table item is located. If the cell
spans multiple columns, this function returns the left-most
column.
\sa row() setCol()
*/
int QTableItem::col() const
{
return cl;
}
/*!
If \a b is TRUE, the table item is enabled; if \a b is FALSE the
table item is disabled.
A disabled item doesn't respond to user interaction.
\sa isEnabled()
*/
void QTableItem::setEnabled( bool b )
{
if ( b == (bool)enabled )
return;
enabled = b;
table()->updateCell( row(), col() );
}
/*!
Returns TRUE if the table item is enabled; otherwise returns FALSE.
\sa setEnabled()
*/
bool QTableItem::isEnabled() const
{
return (bool)enabled;
}
/*!
\class QComboTableItem
\brief The QComboTableItem class provides a means of using
comboboxes in QTables.
\if defined(commercial)
It is part of the <a href="commercialeditions.html">Qt Enterprise Edition</a>.
\endif
\ingroup advanced
\module table
A QComboTableItem is a table item which looks and behaves like a
combobox. The advantage of using QComboTableItems rather than real
comboboxes is that a QComboTableItem uses far less resources than
real comboboxes in \l{QTable}s. When the cell has the focus it
displays a real combobox which the user can interact with. When
the cell does not have the focus the cell \e looks like a
combobox. Only text items (i.e. no pixmaps) may be used in
QComboTableItems.
QComboTableItem items have the edit type \c WhenCurrent (see
\l{EditType}). The QComboTableItem's list of items is provided by
a QStringList passed to the constructor.
The list of items may be changed using setStringList(). The
current item can be set with setCurrentItem() and retrieved with
currentItem(). The text of the current item can be obtained with
currentText(), and the text of a particular item can be retrieved
with text().
If isEditable() is TRUE the QComboTableItem will permit the user
to either choose an existing list item, or create a new list item
by entering their own text; otherwise the user may only choose one
of the existing list items.
To populate a table cell with a QComboTableItem use
QTable::setItem().
QComboTableItems may be deleted with QTable::clearCell().
QComboTableItems can be distinguished from \l{QTableItem}s and
\l{QCheckTableItem}s using their Run Time Type Identification
number (see rtti()).
\img qtableitems.png Table Items
\sa QCheckTableItem QTableItem QComboBox
*/
QComboBox *QComboTableItem::fakeCombo = 0;
QWidget *QComboTableItem::fakeComboWidget = 0;
int QComboTableItem::fakeRef = 0;
/*!
Creates a combo table item for the table \a table. The combobox's
list of items is passed in the \a list argument. If \a editable is
TRUE the user may type in new list items; if \a editable is FALSE
the user may only select from the list of items provided.
By default QComboTableItems cannot be replaced by other table
items since isReplaceable() returns FALSE by default.
\sa QTable::clearCell() EditType
*/
QComboTableItem::QComboTableItem( QTable *table, const QStringList &list, bool editable )
: QTableItem( table, WhenCurrent, "" ), entries( list ), current( 0 ), edit( editable )
{
setReplaceable( FALSE );
if ( !QComboTableItem::fakeCombo ) {
QComboTableItem::fakeComboWidget = new QWidget( 0, 0 );
QComboTableItem::fakeCombo = new QComboBox( FALSE, QComboTableItem::fakeComboWidget, 0 );
QComboTableItem::fakeCombo->hide();
}
++QComboTableItem::fakeRef;
if ( entries.count() )
setText( *entries.at( current ) );
}
/*!
QComboTableItem destructor.
*/
QComboTableItem::~QComboTableItem()
{
if (--QComboTableItem::fakeRef <= 0) {
delete QComboTableItem::fakeComboWidget;
QComboTableItem::fakeComboWidget = 0;
QComboTableItem::fakeCombo = 0;
}
}
/*!
Sets the list items of this QComboTableItem to the strings in the
string list \a l.
*/
void QComboTableItem::setStringList( const QStringList &l )
{
entries = l;
current = 0;
if ( entries.count() )
setText( *entries.at( current ) );
if ( table()->cellWidget( row(), col() ) ) {
cb->clear();
cb->insertStringList( entries );
}
table()->updateCell( row(), col() );
}
/*! \reimp */
QWidget *QComboTableItem::createEditor() const
{
// create an editor - a combobox in our case
( (QComboTableItem*)this )->cb = new QComboBox( edit, table()->viewport(), "qt_editor_cb" );
cb->insertStringList( entries );
cb->setCurrentItem( current );
QObject::connect( cb, SIGNAL( activated(int) ), table(), SLOT( doValueChanged() ) );
return cb;
}
/*! \reimp */
void QComboTableItem::setContentFromEditor( QWidget *w )
{
QComboBox *cb = ::qt_cast<QComboBox*>(w);
if ( cb ) {
entries.clear();
for ( int i = 0; i < cb->count(); ++i )
entries << cb->text( i );
current = cb->currentItem();
setText( *entries.at( current ) );
}
}
/*! \reimp */
void QComboTableItem::paint( QPainter *p, const QColorGroup &cg,
const QRect &cr, bool selected )
{
fakeCombo->resize( cr.width(), cr.height() );
QColorGroup c( cg );
if ( selected ) {
c.setBrush( QColorGroup::Base, cg.brush( QColorGroup::Highlight ) );
c.setColor( QColorGroup::Text, cg.highlightedText() );
}
QStyle::SFlags flags = QStyle::Style_Default;
if(isEnabled() && table()->isEnabled())
flags |= QStyle::Style_Enabled;
table()->style().drawComplexControl( QStyle::CC_ComboBox, p, fakeCombo, fakeCombo->rect(), c, flags );
p->save();
QRect textR = table()->style().querySubControlMetrics(QStyle::CC_ComboBox, fakeCombo,
QStyle::SC_ComboBoxEditField);
int align = alignment(); // alignment() changes entries
p->drawText( textR, wordWrap() ? ( align | WordBreak ) : align, *entries.at( current ) );
p->restore();
}
/*!
Sets the list item \a i to be the combo table item's current list
item.
\sa currentItem()
*/
void QComboTableItem::setCurrentItem( int i )
{
QWidget *w = table()->cellWidget( row(), col() );
QComboBox *cb = ::qt_cast<QComboBox*>(w);
if ( cb ) {
cb->setCurrentItem( i );
current = i;
setText( cb->currentText() );
} else {
current = i;
setText( *entries.at( i ) );
table()->updateCell( row(), col() );
}
}
/*!
\overload
Sets the list item whose text is \a s to be the combo table item's
current list item. Does nothing if no list item has the text \a s.
\sa currentItem()
*/
void QComboTableItem::setCurrentItem( const QString &s )
{
int i = entries.findIndex( s );
if ( i != -1 )
setCurrentItem( i );
}
/*!
Returns the index of the combo table item's current list item.
\sa setCurrentItem()
*/
int QComboTableItem::currentItem() const
{
QWidget *w = table()->cellWidget( row(), col() );
QComboBox *cb = ::qt_cast<QComboBox*>(w);
if ( cb )
return cb->currentItem();
return current;
}
/*!
Returns the text of the combo table item's current list item.
\sa currentItem() text()
*/
QString QComboTableItem::currentText() const
{
QWidget *w = table()->cellWidget( row(), col() );
QComboBox *cb = ::qt_cast<QComboBox*>(w);
if ( cb )
return cb->currentText();
return *entries.at( current );
}
/*!
Returns the total number of list items in the combo table item.
*/
int QComboTableItem::count() const
{
QWidget *w = table()->cellWidget( row(), col() );
QComboBox *cb = ::qt_cast<QComboBox*>(w);
if ( cb )
return cb->count();
return (int)entries.count(); //### size_t/int cast
}
/*!
Returns the text of the combo's list item at index \a i.
\sa currentText()
*/
QString QComboTableItem::text( int i ) const
{
QWidget *w = table()->cellWidget( row(), col() );
QComboBox *cb = ::qt_cast<QComboBox*>(w);
if ( cb )
return cb->text( i );
return *entries.at( i );
}
/*!
If \a b is TRUE the combo table item can be edited, i.e. the user
may enter a new text item themselves. If \a b is FALSE the user may
may only choose one of the existing items.
\sa isEditable()
*/
void QComboTableItem::setEditable( bool b )
{
edit = b;
}
/*!
Returns TRUE if the user can add their own list items to the
combobox's list of items; otherwise returns FALSE.
\sa setEditable()
*/
bool QComboTableItem::isEditable() const
{
return edit;
}
int QComboTableItem::RTTI = 1;
/*!
\fn int QComboTableItem::rtti() const
Returns 1.
Make your derived classes return their own values for rtti()to
distinguish between different table item subclasses. You should
use values greater than 1000, preferably a large random number, to
allow for extensions to this class.
\sa QTableItem::rtti()
*/
int QComboTableItem::rtti() const
{
return RTTI;
}
/*! \reimp */
QSize QComboTableItem::sizeHint() const
{
fakeCombo->insertItem( currentText() );
fakeCombo->setCurrentItem( fakeCombo->count() - 1 );
QSize sh = fakeCombo->sizeHint();
fakeCombo->removeItem( fakeCombo->count() - 1 );
return sh.expandedTo( QApplication::globalStrut() );
}
/*!
\class QCheckTableItem
\brief The QCheckTableItem class provides checkboxes in QTables.
\if defined(commercial)
It is part of the <a href="commercialeditions.html">Qt Enterprise Edition</a>.
\endif
\ingroup advanced
\module table
A QCheckTableItem is a table item which looks and behaves like a
checkbox. The advantage of using QCheckTableItems rather than real
checkboxes is that a QCheckTableItem uses far less resources than
a real checkbox would in a \l{QTable}. When the cell has the focus
it displays a real checkbox which the user can interact with. When
the cell does not have the focus the cell \e looks like a
checkbox. Pixmaps may not be used in QCheckTableItems.
QCheckTableItem items have the edit type \c WhenCurrent (see
\l{EditType}).
To change the checkbox's label use setText(). The checkbox can be
checked and unchecked with setChecked() and its state retrieved
using isChecked().
To populate a table cell with a QCheckTableItem use
QTable::setItem().
QCheckTableItems can be distinguished from \l{QTableItem}s and
\l{QComboTableItem}s using their Run Time Type Identification
(rtti) value.
\img qtableitems.png Table Items
\sa rtti() EditType QComboTableItem QTableItem QCheckBox
*/
/*!
Creates a QCheckTableItem with an \l{EditType} of \c WhenCurrent
as a child of \a table. The checkbox is initially unchecked and
its label is set to the string \a txt.
*/
QCheckTableItem::QCheckTableItem( QTable *table, const QString &txt )
: QTableItem( table, WhenCurrent, txt ), checked( FALSE )
{
}
/*! \reimp */
void QCheckTableItem::setText( const QString &t )
{
QTableItem::setText( t );
QWidget *w = table()->cellWidget( row(), col() );
QCheckBox *cb = ::qt_cast<QCheckBox*>(w);
if ( cb )
cb->setText( t );
}
/*! \reimp */
QWidget *QCheckTableItem::createEditor() const
{
// create an editor - a combobox in our case
( (QCheckTableItem*)this )->cb = new QCheckBox( table()->viewport(), "qt_editor_checkbox" );
cb->setChecked( checked );
cb->setText( text() );
cb->setBackgroundColor( table()->viewport()->backgroundColor() );
QObject::connect( cb, SIGNAL( toggled(bool) ), table(), SLOT( doValueChanged() ) );
return cb;
}
/*! \reimp */
void QCheckTableItem::setContentFromEditor( QWidget *w )
{
QCheckBox *cb = ::qt_cast<QCheckBox*>(w);
if ( cb )
checked = cb->isChecked();
}
/*! \reimp */
void QCheckTableItem::paint( QPainter *p, const QColorGroup &cg,
const QRect &cr, bool selected )
{
p->fillRect( 0, 0, cr.width(), cr.height(),
selected ? cg.brush( QColorGroup::Highlight )
: cg.brush( QColorGroup::Base ) );
int w = cr.width();
int h = cr.height();
QSize sz = QSize( table()->style().pixelMetric( QStyle::PM_IndicatorWidth ),
table()->style().pixelMetric( QStyle::PM_IndicatorHeight ) );
QColorGroup c( cg );
c.setBrush( QColorGroup::Background, c.brush( QColorGroup::Base ) );
QStyle::SFlags flags = QStyle::Style_Default;
if(isEnabled())
flags |= QStyle::Style_Enabled;
if ( checked )
flags |= QStyle::Style_On;
else
flags |= QStyle::Style_Off;
if ( isEnabled() && table()->isEnabled() )
flags |= QStyle::Style_Enabled;
table()->style().drawPrimitive( QStyle::PE_Indicator, p,
QRect( 0, ( cr.height() - sz.height() ) / 2, sz.width(), sz.height() ), c, flags );
int x = sz.width() + 6;
w = w - x;
if ( selected )
p->setPen( cg.highlightedText() );
else
p->setPen( cg.text() );
p->drawText( x, 0, w, h, wordWrap() ? ( alignment() | WordBreak ) : alignment(), text() );
}
/*!
If \a b is TRUE the checkbox is checked; if \a b is FALSE the
checkbox is unchecked.
\sa isChecked()
*/
void QCheckTableItem::setChecked( bool b )
{
checked = b;
table()->updateCell( row(), col() );
QWidget *w = table()->cellWidget( row(), col() );
QCheckBox *cb = ::qt_cast<QCheckBox*>(w);
if ( cb )
cb->setChecked( b );
}
/*!
Returns TRUE if the checkbox table item is checked; otherwise
returns FALSE.
\sa setChecked()
*/
bool QCheckTableItem::isChecked() const
{
// #### why was this next line here. It must not be here, as
// #### people want to call isChecked() from within paintCell()
// #### and end up in an infinite loop that way
// table()->updateCell( row(), col() );
QWidget *w = table()->cellWidget( row(), col() );
QCheckBox *cb = ::qt_cast<QCheckBox*>(w);
if ( cb )
return cb->isChecked();
return checked;
}
int QCheckTableItem::RTTI = 2;
/*!
\fn int QCheckTableItem::rtti() const
Returns 2.
Make your derived classes return their own values for rtti()to
distinguish between different table item subclasses. You should
use values greater than 1000, preferably a large random number, to
allow for extensions to this class.
\sa QTableItem::rtti()
*/
int QCheckTableItem::rtti() const
{
return RTTI;
}
/*! \reimp */
QSize QCheckTableItem::sizeHint() const
{
QSize sz = QSize( table()->style().pixelMetric( QStyle::PM_IndicatorWidth ),
table()->style().pixelMetric( QStyle::PM_IndicatorHeight ) );
sz.setWidth( sz.width() + 6 );
QSize sh( QTableItem::sizeHint() );
return QSize( sh.width() + sz.width(), QMAX( sh.height(), sz.height() ) ).
expandedTo( QApplication::globalStrut() );
}
/*! \file table/small-table-demo/main.cpp */
/*! \file table/bigtable/main.cpp */
/*! \file table/statistics/statistics.cpp */
/*!
\class QTable
\brief The QTable class provides a flexible editable table widget.
\if defined(commercial)
It is part of the <a href="commercialeditions.html">Qt Enterprise Edition</a>.
\endif
\mainclass
\ingroup advanced
\module table
QTable is easy to use, although it does have a large API because
of the comprehensive functionality that it provides. QTable
includes functions for manipulating \link #headers
headers\endlink, \link #columnsrows rows and columns\endlink,
\link #cells cells\endlink and \link #selections
selections\endlink. QTable also provides in-place editing and
\link dnd.html drag and drop\endlink, as well as a useful set of
\link #signals signals\endlink. QTable efficiently supports very
large tables, for example, tables one million by one million cells
are perfectly possible. QTable is economical with memory, using
none for unused cells.
\code
QTable *table = new QTable( 100, 250, this );
table->setPixmap( 3, 2, pix );
table->setText( 3, 2, "A pixmap" );
\endcode
The first line constructs the table specifying its size in rows
and columns. We then insert a pixmap and some text into the \e
same \link #cells cell\endlink, with the pixmap appearing to the
left of the text. QTable cells can be populated with
\l{QTableItem}s, \l{QComboTableItem}s or by \l{QCheckTableItem}s.
By default a vertical header appears at the left of the table
showing row numbers and a horizontal header appears at the top of
the table showing column numbers. (The numbers displayed start at
1, although row and column numbers within QTable begin at 0.)
If you want to use mouse tracking call setMouseTracking( TRUE ) on
the \e viewport; (see \link qscrollview.html#allviews
QScrollView\endlink).
\img qtableitems.png Table Items
\target headers
\section1 Headers
QTable supports a header column, e.g. to display row numbers, and
a header row, e.g to display column titles. To set row or column
labels use QHeader::setLabel() on the pointers returned by
verticalHeader() and horizontalHeader() respectively. The vertical
header is displayed within the table's left margin whose width is
set with setLeftMargin(). The horizontal header is displayed
within the table's top margin whose height is set with
setTopMargin(). The table's grid can be switched off with
setShowGrid(). If you want to hide a horizontal header call
hide(), and call setTopMargin( 0 ) so that the area the header
would have occupied is reduced to zero size.
Header labels are indexed via their section numbers. Note that the
default behavior of QHeader regarding section numbers is overriden
for QTable. See the explanation below in the Rows and Columns
section in the discussion of moving columns and rows.
\target columnsrows
\section1 Rows and Columns
Row and column sizes are set with setRowHeight() and
setColumnWidth(). If you want a row high enough to show the
tallest item in its entirety, use adjustRow(). Similarly, to make
a column wide enough to show the widest item use adjustColumn().
If you want the row height and column width to adjust
automatically as the height and width of the table changes use
setRowStretchable() and setColumnStretchable().
Rows and columns can be hidden and shown with hideRow(),
hideColumn(), showRow() and showColumn(). New rows and columns are
inserted using insertRows() and insertColumns(). Additional rows
and columns are added at the bottom (rows) or right (columns) if
you set setNumRows() or setNumCols() to be larger than numRows()
or numCols(). Existing rows and columns are removed with
removeRow() and removeColumn(). Multiple rows and columns can be
removed with removeRows() and removeColumns().
Rows and columns can be set to be moveable using
rowMovingEnabled() and columnMovingEnabled(). The user can drag
them to reorder them holding down the Ctrl key and dragging the
mouse. For performance reasons, the default behavior of QHeader
section numbers is overridden by QTable. Currently in QTable, when
a row or column is dragged and reordered, the section number is
also changed to its new position. Therefore, there is no
difference between the section and the index fields in QHeader.
The QTable QHeader classes do not provide a mechanism for indexing
independently of the user interface ordering.
The table can be sorted using sortColumn(). Users can sort a
column by clicking its header if setSorting() is set to TRUE. Rows
can be swapped with swapRows(), columns with swapColumns() and
cells with swapCells().
For editable tables (see setReadOnly()) you can set the read-only
property of individual rows and columns with setRowReadOnly() and
setColumnReadOnly(). (Whether a cell is editable or read-only
depends on these settings and the cell's \link
qtableitem.html#wheneditable QTableItem::EditType\endlink.)
The row and column which have the focus are returned by
currentRow() and currentColumn() respectively.
Although many QTable functions operate in terms of rows and
columns the indexOf() function returns a single integer
identifying a particular cell.
\target cells
\section1 Cells
All of a QTable's cells are empty when the table is constructed.
There are two approaches to populating the table's cells. The
first and simplest approach is to use QTableItems or QTableItem
subclasses. The second approach doesn't use QTableItems at all
which is useful for very large sparse tables but requires you to
reimplement a number of functions. We'll look at each approach in
turn.
To put a string in a cell use setText(). This function will create
a new QTableItem for the cell if one doesn't already exist, and
displays the text in it. By default the table item's widget will
be a QLineEdit. A pixmap may be put in a cell with setPixmap(),
which also creates a table item if required. A cell may contain \e
both a pixmap and text; the pixmap is displayed to the left of the
text. Another approach is to construct a QTableItem or QTableItem
subclass, set its properties, then insert it into a cell with
setItem().
If you want cells which contain comboboxes use the QComboTableItem
class. Similarly if you require cells containing checkboxes use
the QCheckTableItem class. These table items look and behave just
like the combobox or checkbox widgets but consume far less memory.
\quotefile table/small-table-demo/main.cpp
\skipto int j
\printuntil QCheckTableItem
In the example above we create a column of QCheckTableItems and
insert them into the table using setItem().
QTable takes ownership of its QTableItems and will delete them
when the table itself is destroyed. You can take ownership of a
table item using takeItem() which you use to move a cell's
contents from one cell to another, either within the same table,
or from one table to another. (See also, swapCells()).
In-place editing of the text in QTableItems, and the values in
QComboTableItems and QCheckTableItems works automatically. Cells
may be editable or read-only, see \link
qtableitem.html#wheneditable QTableItem::EditType\endlink. If you
want fine control over editing see beginEdit() and endEdit().
The contents of a cell can be retrieved as a QTableItem using
item(), or as a string with text() or as a pixmap (if there is
one) with pixmap(). A cell's bounding rectangle is given by
cellGeometry(). Use updateCell() to repaint a cell, for example to
clear away a cell's visual representation after it has been
deleted with clearCell(). The table can be forced to scroll to
show a particular cell with ensureCellVisible(). The isSelected()
function indicates if a cell is selected.
It is possible to use your own widget as a cell's widget using
setCellWidget(), but subclassing QTableItem might be a simpler
approach. The cell's widget (if there is one) can be removed with
clearCellWidget().
\keyword notes on large tables
\target bigtables
\section2 Large tables
For large, sparse, tables using QTableItems or other widgets is
inefficient. The solution is to \e draw the cell as it should
appear and to create and destroy cell editors on demand.
This approach requires that you reimplement various functions.
Reimplement paintCell() to display your data, and createEditor()
and setCellContentFromEditor() to support in-place editing. It
is very important to reimplement resizeData() to have no
functionality, to prevent QTable from attempting to create a huge
array. You will also need to reimplement item(), setItem(),
takeItem(), clearCell(), and insertWidget(), cellWidget() and
clearCellWidget(). In almost every circumstance (for sorting,
removing and inserting columns and rows, etc.), you also need
to reimplement swapRows(), swapCells() and swapColumns(), including
header handling.
If you represent active cells with a dictionary of QTableItems and
QWidgets, i.e. only store references to cells that are actually
used, many of the functions can be implemented with a single line
of code. (See the \l table/bigtable/main.cpp example.)
For more information on cells see the QTableItem documenation.
\target selections
\section1 Selections
QTable's support single selection, multi-selection (multiple
cells) or no selection. The selection mode is set with
setSelectionMode(). Use isSelected() to determine if a particular
cell is selected, and isRowSelected() and isColumnSelected() to
see if a row or column is selected.
QTable's support many simultaneous selections. You can
programmatically select cells with addSelection(). The number of
selections is given by numSelections(). The current selection is
returned by currentSelection(). You can remove a selection with
removeSelection() and remove all selections with
clearSelection(). Selections are QTableSelection objects.
To easily add a new selection use selectCells(), selectRow() or
selectColumn().
Alternatively, use addSelection() to add new selections using
QTableSelection objects. The advantage of using QTableSelection
objects is that you can call QTableSelection::expandTo() to resize
the selection and can query and compare them.
The number of selections is given by numSelections(). The current
selection is returned by currentSelection(). You can remove a
selection with removeSelection() and remove all selections with
clearSelection().
\target signals
\section1 Signals
When the user clicks a cell the currentChanged() signal is
emitted. You can also connect to the lower level clicked(),
doubleClicked() and pressed() signals. If the user changes the
selection the selectionChanged() signal is emitted; similarly if
the user changes a cell's value the valueChanged() signal is
emitted. If the user right-clicks (or presses the appropriate
platform-specific key sequence) the contextMenuRequested() signal
is emitted. If the user drops a drag and drop object the dropped()
signal is emitted with the drop event.
*/
/*!
\fn void QTable::currentChanged( int row, int col )
This signal is emitted when the current cell has changed to \a
row, \a col.
*/
/*!
\fn void QTable::valueChanged( int row, int col )
This signal is emitted when the user changed the value in the cell
at \a row, \a col.
*/
/*!
\fn int QTable::currentRow() const
Returns the current row.
\sa currentColumn()
*/
/*!
\fn int QTable::currentColumn() const
Returns the current column.
\sa currentRow()
*/
/*!
\enum QTable::EditMode
\value NotEditing No cell is currently being edited.
\value Editing A cell is currently being edited. The editor was
initialised with the cell's contents.
\value Replacing A cell is currently being edited. The editor was
not initialised with the cell's contents.
*/
/*!
\enum QTable::SelectionMode
\value NoSelection No cell can be selected by the user.
\value Single The user may only select a single range of cells.
\value Multi The user may select multiple ranges of cells.
\value SingleRow The user may select one row at once.
\value MultiRow The user may select multiple rows.
*/
/*!
\enum QTable::FocusStyle
Specifies how the current cell (focus cell) is drawn.
\value FollowStyle The current cell is drawn according to the
current style and the cell's background is also drawn selected, if
the current cell is within a selection
\value SpreadSheet The current cell is drawn as in a spreadsheet.
This means, it is signified by a black rectangle around the cell,
and the background of the current cell is always drawn with the
widget's base color - even when selected.
*/
/*!
\fn void QTable::clicked( int row, int col, int button, const QPoint &mousePos )
This signal is emitted when mouse button \a button is clicked. The
cell where the event took place is at \a row, \a col, and the
mouse's position is in \a mousePos.
\sa Qt::ButtonState
*/
/*!
\fn void QTable::doubleClicked( int row, int col, int button, const QPoint &mousePos )
This signal is emitted when mouse button \a button is
double-clicked. The cell where the event took place is at \a row,
\a col, and the mouse's position is in \a mousePos.
\sa Qt::ButtonState
*/
/*!
\fn void QTable::pressed( int row, int col, int button, const QPoint &mousePos )
This signal is emitted when mouse button \a button is pressed. The
cell where the event took place is at \a row, \a col, and the
mouse's position is in \a mousePos.
\sa Qt::ButtonState
*/
/*!
\fn void QTable::selectionChanged()
This signal is emitted whenever a selection changes.
\sa QTableSelection
*/
/*!
\fn void QTable::contextMenuRequested( int row, int col, const QPoint & pos )
This signal is emitted when the user invokes a context menu with
the right mouse button (or with a system-specific keypress). The
cell where the event took place is at \a row, \a col. \a pos is
the position where the context menu will appear in the global
coordinate system. This signal is always emitted, even if the
contents of the cell are disabled.
*/
/*!
Creates an empty table object called \a name as a child of \a
parent.
Call setNumRows() and setNumCols() to set the table size before
populating the table if you're using QTableItems.
\sa QWidget::clearWFlags() Qt::WidgetFlags
*/
QTable::QTable( QWidget *parent, const char *name )
: QScrollView( parent, name, WNoAutoErase | WStaticContents ),
leftHeader( 0 ), topHeader( 0 ),
currentSel( 0 ), lastSortCol( -1 ), sGrid( TRUE ), mRows( FALSE ), mCols( FALSE ),
asc( TRUE ), doSort( TRUE ), readOnly( FALSE )
{
init( 0, 0 );
}
/*!
Constructs an empty table called \a name with \a numRows rows and
\a numCols columns. The table is a child of \a parent.
If you're using \l{QTableItem}s to populate the table's cells, you
can create QTableItem, QComboTableItem and QCheckTableItem items
and insert them into the table using setItem(). (See the notes on
large tables for an alternative to using QTableItems.)
\sa QWidget::clearWFlags() Qt::WidgetFlags
*/
QTable::QTable( int numRows, int numCols, QWidget *parent, const char *name )
: QScrollView( parent, name, WNoAutoErase | WStaticContents ),
leftHeader( 0 ), topHeader( 0 ),
currentSel( 0 ), lastSortCol( -1 ), sGrid( TRUE ), mRows( FALSE ), mCols( FALSE ),
asc( TRUE ), doSort( TRUE ), readOnly( FALSE )
{
init( numRows, numCols );
}
/*! \internal
*/
void QTable::init( int rows, int cols )
{
#ifndef QT_NO_DRAGANDDROP
setDragAutoScroll( FALSE );
#endif
d = new QTablePrivate;
d->geomTimer = new QTimer( this );
d->lastVisCol = 0;
d->lastVisRow = 0;
connect( d->geomTimer, SIGNAL( timeout() ), this, SLOT( updateGeometriesSlot() ) );
shouldClearSelection = FALSE;
dEnabled = FALSE;
roRows.setAutoDelete( TRUE );
roCols.setAutoDelete( TRUE );
setSorting( FALSE );
unused = TRUE; // It's unused, ain't it? :)
selMode = Multi;
contents.setAutoDelete( TRUE );
widgets.setAutoDelete( TRUE );
// Enable clipper and set background mode
enableClipper( qt_table_clipper_enabled );
viewport()->setFocusProxy( this );
viewport()->setFocusPolicy( WheelFocus );
viewport()->setBackgroundMode( PaletteBase );
setBackgroundMode( PaletteBackground, PaletteBase );
setResizePolicy( Manual );
selections.setAutoDelete( TRUE );
// Create headers
leftHeader = new QTableHeader( rows, this, this, "left table header" );
leftHeader->setOrientation( Vertical );
leftHeader->setTracking( TRUE );
leftHeader->setMovingEnabled( TRUE );
topHeader = new QTableHeader( cols, this, this, "right table header" );
topHeader->setOrientation( Horizontal );
topHeader->setTracking( TRUE );
topHeader->setMovingEnabled( TRUE );
if ( QApplication::reverseLayout() )
setMargins( 0, fontMetrics().height() + 4, 30, 0 );
else
setMargins( 30, fontMetrics().height() + 4, 0, 0 );
topHeader->setUpdatesEnabled( FALSE );
leftHeader->setUpdatesEnabled( FALSE );
// Initialize headers
int i = 0;
for ( i = 0; i < numCols(); ++i )
topHeader->resizeSection( i, QMAX( 100, QApplication::globalStrut().height() ) );
for ( i = 0; i < numRows(); ++i )
leftHeader->resizeSection( i, QMAX( 20, QApplication::globalStrut().width() ) );
topHeader->setUpdatesEnabled( TRUE );
leftHeader->setUpdatesEnabled( TRUE );
// Prepare for contents
contents.setAutoDelete( FALSE );
// Connect header, table and scrollbars
connect( horizontalScrollBar(), SIGNAL( valueChanged(int) ),
topHeader, SLOT( setOffset(int) ) );
connect( verticalScrollBar(), SIGNAL( valueChanged(int) ),
leftHeader, SLOT( setOffset(int) ) );
connect( topHeader, SIGNAL( sectionSizeChanged(int) ),
this, SLOT( columnWidthChanged(int) ) );
connect( topHeader, SIGNAL( indexChange(int,int,int) ),
this, SLOT( columnIndexChanged(int,int,int) ) );
connect( topHeader, SIGNAL( sectionClicked(int) ),
this, SLOT( columnClicked(int) ) );
connect( leftHeader, SIGNAL( sectionSizeChanged(int) ),
this, SLOT( rowHeightChanged(int) ) );
connect( leftHeader, SIGNAL( indexChange(int,int,int) ),
this, SLOT( rowIndexChanged(int,int,int) ) );
// Initialize variables
autoScrollTimer = new QTimer( this );
connect( autoScrollTimer, SIGNAL( timeout() ),
this, SLOT( doAutoScroll() ) );
curRow = curCol = 0;
topHeader->setSectionState( curCol, QTableHeader::Bold );
leftHeader->setSectionState( curRow, QTableHeader::Bold );
edMode = NotEditing;
editRow = editCol = -1;
drawActiveSelection = TRUE;
installEventFilter( this );
focusStl = SpreadSheet;
was_visible = FALSE;
// initial size
resize( 640, 480 );
}
/*!
Releases all the resources used by the QTable object,
including all \l{QTableItem}s and their widgets.
*/
QTable::~QTable()
{
setUpdatesEnabled( FALSE );
contents.setAutoDelete( TRUE );
contents.clear();
widgets.clear();
delete d;
}
void QTable::setReadOnly( bool b )
{
readOnly = b;
QTableItem *i = item(curRow, curCol);
if (readOnly && isEditing()) {
endEdit(editRow, editCol, TRUE, FALSE);
} else if (!readOnly && i && (i->editType() == QTableItem::WhenCurrent
|| i->editType() == QTableItem::Always)) {
editCell(curRow, curCol);
}
}
/*!
If \a ro is TRUE, row \a row is set to be read-only; otherwise the
row is set to be editable.
Whether a cell in this row is editable or read-only depends on the
cell's EditType, and this setting:
see \link qtableitem.html#wheneditable QTableItem::EditType\endlink.
\sa isRowReadOnly() setColumnReadOnly() setReadOnly()
*/
void QTable::setRowReadOnly( int row, bool ro )
{
if ( ro )
roRows.replace( row, new int( 0 ) );
else
roRows.remove( row );
if (curRow == row) {
QTableItem *i = item(curRow, curCol);
if (ro && isEditing()) {
endEdit(editRow, editCol, TRUE, FALSE);
} else if (!ro && i && (i->editType() == QTableItem::WhenCurrent
|| i->editType() == QTableItem::Always)) {
editCell(curRow, curCol);
}
}
}
/*!
If \a ro is TRUE, column \a col is set to be read-only; otherwise
the column is set to be editable.
Whether a cell in this column is editable or read-only depends on
the cell's EditType, and this setting:
see \link qtableitem.html#wheneditable QTableItem::EditType\endlink.
\sa isColumnReadOnly() setRowReadOnly() setReadOnly()
*/
void QTable::setColumnReadOnly( int col, bool ro )
{
if ( ro )
roCols.replace( col, new int( 0 ) );
else
roCols.remove( col );
if (curCol == col) {
QTableItem *i = item(curRow, curCol);
if (ro && isEditing()) {
endEdit(editRow, editCol, TRUE, FALSE);
} else if (!ro && i && (i->editType() == QTableItem::WhenCurrent
|| i->editType() == QTableItem::Always)) {
editCell(curRow, curCol);
}
}
}
/*!
\property QTable::readOnly
\brief whether the table is read-only
Whether a cell in the table is editable or read-only depends on
the cell's \link QTableItem::EditType EditType\endlink, and this setting:
see \link qtableitem.html#wheneditable
QTableItem::EditType\endlink.
\sa QWidget::enabled setColumnReadOnly() setRowReadOnly()
*/
bool QTable::isReadOnly() const
{
return readOnly;
}
/*!
Returns TRUE if row \a row is read-only; otherwise returns FALSE.
Whether a cell in this row is editable or read-only depends on the
cell's \link QTableItem::EditType EditType\endlink, and this
setting: see \link qtableitem.html#wheneditable
QTableItem::EditType\endlink.
\sa setRowReadOnly() isColumnReadOnly()
*/
bool QTable::isRowReadOnly( int row ) const
{
return (roRows.find( row ) != 0);
}
/*!
Returns TRUE if column \a col is read-only; otherwise returns
FALSE.
Whether a cell in this column is editable or read-only depends on
the cell's EditType, and this setting: see \link
qtableitem.html#wheneditable QTableItem::EditType\endlink.
\sa setColumnReadOnly() isRowReadOnly()
*/
bool QTable::isColumnReadOnly( int col ) const
{
return (roCols.find( col ) != 0);
}
void QTable::setSelectionMode( SelectionMode mode )
{
if ( mode == selMode )
return;
selMode = mode;
clearSelection();
if ( isRowSelection( selMode ) && numRows() > 0 && numCols() > 0 ) {
currentSel = new QTableSelection();
selections.append( currentSel );
currentSel->init( curRow, 0 );
currentSel->expandTo( curRow, numCols() - 1 );
repaintSelections( 0, currentSel );
}
}
/*!
\property QTable::selectionMode
\brief the current selection mode
The default mode is \c Multi which allows the user to select
multiple ranges of cells.
\sa SelectionMode setSelectionMode()
*/
QTable::SelectionMode QTable::selectionMode() const
{
return selMode;
}
/*!
\property QTable::focusStyle
\brief how the current (focus) cell is drawn
The default style is \c SpreadSheet.
\sa QTable::FocusStyle
*/
void QTable::setFocusStyle( FocusStyle fs )
{
focusStl = fs;
updateCell( curRow, curCol );
}
QTable::FocusStyle QTable::focusStyle() const
{
return focusStl;
}
/*!
This functions updates all the header states to be in sync with
the current selections. This should be called after
programatically changing, adding or removing selections, so that
the headers are updated.
*/
void QTable::updateHeaderStates()
{
horizontalHeader()->setUpdatesEnabled( FALSE );
verticalHeader()->setUpdatesEnabled( FALSE );
( (QTableHeader*)verticalHeader() )->setSectionStateToAll( QTableHeader::Normal );
( (QTableHeader*)horizontalHeader() )->setSectionStateToAll( QTableHeader::Normal );
QPtrListIterator<QTableSelection> it( selections );
QTableSelection *s;
while ( ( s = it.current() ) != 0 ) {
++it;
if ( s->isActive() ) {
if ( s->leftCol() == 0 &&
s->rightCol() == numCols() - 1 ) {
for ( int i = 0; i < s->bottomRow() - s->topRow() + 1; ++i )
leftHeader->setSectionState( s->topRow() + i, QTableHeader::Selected );
}
if ( s->topRow() == 0 &&
s->bottomRow() == numRows() - 1 ) {
for ( int i = 0; i < s->rightCol() - s->leftCol() + 1; ++i )
topHeader->setSectionState( s->leftCol() + i, QTableHeader::Selected );
}
}
}
horizontalHeader()->setUpdatesEnabled( TRUE );
verticalHeader()->setUpdatesEnabled( TRUE );
horizontalHeader()->repaint( FALSE );
verticalHeader()->repaint( FALSE );
}
/*!
Returns the table's top QHeader.
This header contains the column labels.
To modify a column label use QHeader::setLabel(), e.g.
\quotefile table/statistics/statistics.cpp
\skipto horizontalHeader
\printline
\sa verticalHeader() setTopMargin() QHeader
*/
QHeader *QTable::horizontalHeader() const
{
return (QHeader*)topHeader;
}
/*!
Returns the table's vertical QHeader.
This header contains the row labels.
\sa horizontalHeader() setLeftMargin() QHeader
*/
QHeader *QTable::verticalHeader() const
{
return (QHeader*)leftHeader;
}
void QTable::setShowGrid( bool b )
{
if ( sGrid == b )
return;
sGrid = b;
updateContents();
}
/*!
\property QTable::showGrid
\brief whether the table's grid is displayed
The grid is shown by default.
*/
bool QTable::showGrid() const
{
return sGrid;
}
/*!
\property QTable::columnMovingEnabled
\brief whether columns can be moved by the user
The default is FALSE. Columns are moved by dragging whilst holding
down the Ctrl key.
\warning If QTable is used to move header sections as a result of user
interaction, the mapping between header indexes and section exposed by
QHeader will not reflect the order of the headers in the table; i.e.,
QTable does not call QHeader::moveSection() to move sections but handles
move operations internally.
\sa rowMovingEnabled
*/
void QTable::setColumnMovingEnabled( bool b )
{
mCols = b;
}
bool QTable::columnMovingEnabled() const
{
return mCols;
}
/*!
\property QTable::rowMovingEnabled
\brief whether rows can be moved by the user
The default is FALSE. Rows are moved by dragging whilst holding
down the Ctrl key.
\warning If QTable is used to move header sections as a result of user
interaction, the mapping between header indexes and section exposed by
QHeader will not reflect the order of the headers in the table; i.e.,
QTable does not call QHeader::moveSection() to move sections but handles
move operations internally.
\sa columnMovingEnabled
*/
void QTable::setRowMovingEnabled( bool b )
{
mRows = b;
}
bool QTable::rowMovingEnabled() const
{
return mRows;
}
/*!
This is called when QTable's internal array needs to be resized to
\a len elements.
If you don't use QTableItems you should reimplement this as an
empty method to avoid wasting memory. See the notes on large
tables for further details.
*/
void QTable::resizeData( int len )
{
contents.resize( len );
widgets.resize( len );
}
/*!
Swaps the data in \a row1 and \a row2.
This function is used to swap the positions of two rows. It is
called when the user changes the order of rows (see
setRowMovingEnabled()), and when rows are sorted.
If you don't use \l{QTableItem}s and want your users to be able to
swap rows, e.g. for sorting, you will need to reimplement this
function. (See the notes on large tables.)
If \a swapHeader is TRUE, the rows' header contents is also
swapped.
This function will not update the QTable, you will have to do
this manually, e.g. by calling updateContents().
\sa swapColumns() swapCells()
*/
void QTable::swapRows( int row1, int row2, bool swapHeader )
{
if ( swapHeader )
leftHeader->swapSections( row1, row2, FALSE );
QPtrVector<QTableItem> tmpContents;
tmpContents.resize( numCols() );
QPtrVector<QWidget> tmpWidgets;
tmpWidgets.resize( numCols() );
int i;
contents.setAutoDelete( FALSE );
widgets.setAutoDelete( FALSE );
for ( i = 0; i < numCols(); ++i ) {
QTableItem *i1, *i2;
i1 = item( row1, i );
i2 = item( row2, i );
if ( i1 || i2 ) {
tmpContents.insert( i, i1 );
contents.remove( indexOf( row1, i ) );
contents.insert( indexOf( row1, i ), i2 );
contents.remove( indexOf( row2, i ) );
contents.insert( indexOf( row2, i ), tmpContents[ i ] );
if ( contents[ indexOf( row1, i ) ] )
contents[ indexOf( row1, i ) ]->setRow( row1 );
if ( contents[ indexOf( row2, i ) ] )
contents[ indexOf( row2, i ) ]->setRow( row2 );
}
QWidget *w1, *w2;
w1 = cellWidget( row1, i );
w2 = cellWidget( row2, i );
if ( w1 || w2 ) {
tmpWidgets.insert( i, w1 );
widgets.remove( indexOf( row1, i ) );
widgets.insert( indexOf( row1, i ), w2 );
widgets.remove( indexOf( row2, i ) );
widgets.insert( indexOf( row2, i ), tmpWidgets[ i ] );
}
}
contents.setAutoDelete( FALSE );
widgets.setAutoDelete( TRUE );
updateRowWidgets( row1 );
updateRowWidgets( row2 );
if ( curRow == row1 )
curRow = row2;
else if ( curRow == row2 )
curRow = row1;
if ( editRow == row1 )
editRow = row2;
else if ( editRow == row2 )
editRow = row1;
}
/*!
Sets the left margin to be \a m pixels wide.
The verticalHeader(), which displays row labels, occupies this
margin.
In an Arabic or Hebrew localization, the verticalHeader() will
appear on the right side of the table, and this call will set the
right margin.
\sa leftMargin() setTopMargin() verticalHeader()
*/
void QTable::setLeftMargin( int m )
{
if ( QApplication::reverseLayout() )
setMargins( leftMargin(), topMargin(), m, bottomMargin() );
else
setMargins( m, topMargin(), rightMargin(), bottomMargin() );
updateGeometries();
}
/*!
Sets the top margin to be \a m pixels high.
The horizontalHeader(), which displays column labels, occupies
this margin.
\sa topMargin() setLeftMargin()
*/
void QTable::setTopMargin( int m )
{
setMargins( leftMargin(), m, rightMargin(), bottomMargin() );
updateGeometries();
}
/*!
Swaps the data in \a col1 with \a col2.
This function is used to swap the positions of two columns. It is
called when the user changes the order of columns (see
setColumnMovingEnabled(), and when columns are sorted.
If you don't use \l{QTableItem}s and want your users to be able to
swap columns you will need to reimplement this function. (See the
notes on large tables.)
If \a swapHeader is TRUE, the columns' header contents is also
swapped.
\sa swapCells()
*/
void QTable::swapColumns( int col1, int col2, bool swapHeader )
{
if ( swapHeader )
topHeader->swapSections( col1, col2, FALSE );
QPtrVector<QTableItem> tmpContents;
tmpContents.resize( numRows() );
QPtrVector<QWidget> tmpWidgets;
tmpWidgets.resize( numRows() );
int i;
contents.setAutoDelete( FALSE );
widgets.setAutoDelete( FALSE );
for ( i = 0; i < numRows(); ++i ) {
QTableItem *i1, *i2;
i1 = item( i, col1 );
i2 = item( i, col2 );
if ( i1 || i2 ) {
tmpContents.insert( i, i1 );
contents.remove( indexOf( i, col1 ) );
contents.insert( indexOf( i, col1 ), i2 );
contents.remove( indexOf( i, col2 ) );
contents.insert( indexOf( i, col2 ), tmpContents[ i ] );
if ( contents[ indexOf( i, col1 ) ] )
contents[ indexOf( i, col1 ) ]->setCol( col1 );
if ( contents[ indexOf( i, col2 ) ] )
contents[ indexOf( i, col2 ) ]->setCol( col2 );
}
QWidget *w1, *w2;
w1 = cellWidget( i, col1 );
w2 = cellWidget( i, col2 );
if ( w1 || w2 ) {
tmpWidgets.insert( i, w1 );
widgets.remove( indexOf( i, col1 ) );
widgets.insert( indexOf( i, col1 ), w2 );
widgets.remove( indexOf( i, col2 ) );
widgets.insert( indexOf( i, col2 ), tmpWidgets[ i ] );
}
}
contents.setAutoDelete( FALSE );
widgets.setAutoDelete( TRUE );
columnWidthChanged( col1 );
columnWidthChanged( col2 );
if ( curCol == col1 )
curCol = col2;
else if ( curCol == col2 )
curCol = col1;
if ( editCol == col1 )
editCol = col2;
else if ( editCol == col2 )
editCol = col1;
}
/*!
Swaps the contents of the cell at \a row1, \a col1 with the
contents of the cell at \a row2, \a col2.
This function is also called when the table is sorted.
If you don't use \l{QTableItem}s and want your users to be able to
swap cells, you will need to reimplement this function. (See the
notes on large tables.)
\sa swapColumns() swapRows()
*/
void QTable::swapCells( int row1, int col1, int row2, int col2 )
{
contents.setAutoDelete( FALSE );
widgets.setAutoDelete( FALSE );
QTableItem *i1, *i2;
i1 = item( row1, col1 );
i2 = item( row2, col2 );
if ( i1 || i2 ) {
QTableItem *tmp = i1;
contents.remove( indexOf( row1, col1 ) );
contents.insert( indexOf( row1, col1 ), i2 );
contents.remove( indexOf( row2, col2 ) );
contents.insert( indexOf( row2, col2 ), tmp );
if ( contents[ indexOf( row1, col1 ) ] ) {
contents[ indexOf( row1, col1 ) ]->setRow( row1 );
contents[ indexOf( row1, col1 ) ]->setCol( col1 );
}
if ( contents[ indexOf( row2, col2 ) ] ) {
contents[ indexOf( row2, col2 ) ]->setRow( row2 );
contents[ indexOf( row2, col2 ) ]->setCol( col2 );
}
}
QWidget *w1, *w2;
w1 = cellWidget( row1, col1 );
w2 = cellWidget( row2, col2 );
if ( w1 || w2 ) {
QWidget *tmp = w1;
widgets.remove( indexOf( row1, col1 ) );
widgets.insert( indexOf( row1, col1 ), w2 );
widgets.remove( indexOf( row2, col2 ) );
widgets.insert( indexOf( row2, col2 ), tmp );
}
updateRowWidgets( row1 );
updateRowWidgets( row2 );
updateColWidgets( col1 );
updateColWidgets( col2 );
contents.setAutoDelete( FALSE );
widgets.setAutoDelete( TRUE );
}
static bool is_child_of( QWidget *child, QWidget *parent )
{
while ( child ) {
if ( child == parent )
return TRUE;
child = child->parentWidget();
}
return FALSE;
}
/*!
Draws the table contents on the painter \a p. This function is
optimized so that it only draws the cells inside the \a cw pixels
wide and \a ch pixels high clipping rectangle at position \a cx,
\a cy.
Additionally, drawContents() highlights the current cell.
*/
void QTable::drawContents( QPainter *p, int cx, int cy, int cw, int ch )
{
int colfirst = columnAt( cx );
int collast = columnAt( cx + cw );
int rowfirst = rowAt( cy );
int rowlast = rowAt( cy + ch );
if ( rowfirst == -1 || colfirst == -1 ) {
paintEmptyArea( p, cx, cy, cw, ch );
return;
}
drawActiveSelection = hasFocus() || viewport()->hasFocus() || d->inMenuMode
|| is_child_of( qApp->focusWidget(), viewport() )
|| !style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this );
if ( rowlast == -1 )
rowlast = numRows() - 1;
if ( collast == -1 )
collast = numCols() - 1;
bool currentInSelection = FALSE;
QPtrListIterator<QTableSelection> it( selections );
QTableSelection *s;
while ( ( s = it.current() ) != 0 ) {
++it;
if ( s->isActive() &&
curRow >= s->topRow() &&
curRow <= s->bottomRow() &&
curCol >= s->leftCol() &&
curCol <= s->rightCol() ) {
currentInSelection = s->topRow() != curRow || s->bottomRow() != curRow || s->leftCol() != curCol || s->rightCol() != curCol;
break;
}
}
// Go through the rows
for ( int r = rowfirst; r <= rowlast; ++r ) {
// get row position and height
int rowp = rowPos( r );
int rowh = rowHeight( r );
// Go through the columns in row r
// if we know from where to where, go through [colfirst, collast],
// else go through all of them
for ( int c = colfirst; c <= collast; ++c ) {
// get position and width of column c
int colp, colw;
colp = columnPos( c );
colw = columnWidth( c );
int oldrp = rowp;
int oldrh = rowh;
QTableItem *itm = item( r, c );
if ( itm &&
( itm->colSpan() > 1 || itm->rowSpan() > 1 ) ) {
bool goon = (r == itm->row() && c == itm->col()) ||
(r == rowfirst && c == itm->col()) ||
(r == itm->row() && c == colfirst);
if ( !goon )
continue;
rowp = rowPos( itm->row() );
rowh = 0;
int i;
for ( i = 0; i < itm->rowSpan(); ++i )
rowh += rowHeight( i + itm->row() );
colp = columnPos( itm->col() );
colw = 0;
for ( i = 0; i < itm->colSpan(); ++i )
colw += columnWidth( i + itm->col() );
}
// Translate painter and draw the cell
p->translate( colp, rowp );
bool selected = isSelected( r, c );
if ( focusStl != FollowStyle && selected && !currentInSelection &&
r == curRow && c == curCol )
selected = FALSE;
paintCell( p, r, c, QRect( colp, rowp, colw, rowh ), selected );
p->translate( -colp, -rowp );
rowp = oldrp;
rowh = oldrh;
QWidget *w = cellWidget( r, c );
QRect cg( cellGeometry( r, c ) );
if ( w && w->geometry() != QRect( contentsToViewport( cg.topLeft() ), cg.size() - QSize( 1, 1 ) ) ) {
moveChild( w, colp, rowp );
w->resize( cg.size() - QSize( 1, 1 ) );
}
}
}
d->lastVisCol = collast;
d->lastVisRow = rowlast;
// draw indication of current cell
QRect focusRect = cellGeometry( curRow, curCol );
p->translate( focusRect.x(), focusRect.y() );
paintFocus( p, focusRect );
p->translate( -focusRect.x(), -focusRect.y() );
// Paint empty rects
paintEmptyArea( p, cx, cy, cw, ch );
drawActiveSelection = TRUE;
}
/*!
\reimp
(Implemented to get rid of a compiler warning.)
*/
void QTable::drawContents( QPainter * )
{
}
/*!
Returns the geometry of cell \a row, \a col in the cell's
coordinate system. This is a convenience function useful in
paintCell(). It is equivalent to QRect( QPoint(0,0), cellGeometry(
row, col).size() );
\sa cellGeometry()
*/
QRect QTable::cellRect( int row, int col ) const
{
return QRect( QPoint(0,0), cellGeometry( row, col ).size() );
}
/*!
\overload
Use the other paintCell() function. This function is only included
for backwards compatibilty.
*/
void QTable::paintCell( QPainter* p, int row, int col,
const QRect &cr, bool selected )
{
if ( cr.width() == 0 || cr.height() == 0 )
return;
#if defined(Q_WS_WIN)
const QColorGroup &cg = ( !drawActiveSelection && style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus ) ? palette().inactive() : colorGroup() );
#else
const QColorGroup &cg = colorGroup();
#endif
QTableItem *itm = item( row, col );
QColorGroup cg2( cg );
if ( itm && !itm->isEnabled() )
cg2 = palette().disabled();
paintCell( p, row, col, cr, selected, cg2 );
}
/*!
Paints the cell at \a row, \a col on the painter \a p. The painter
has already been translated to the cell's origin. \a cr describes
the cell coordinates in the content coordinate system.
If \a selected is TRUE the cell is highlighted.
\a cg is the colorgroup which should be used to draw the cell
content.
If you want to draw custom cell content, for example right-aligned
text, you must either reimplement paintCell(), or subclass
QTableItem and reimplement QTableItem::paint() to do the custom
drawing.
If you're using a QTableItem subclass, for example, to store a
data structure, then reimplementing QTableItem::paint() may be the
best approach. For data you want to draw immediately, e.g. data
retrieved from a database, it is probably best to reimplement
paintCell(). Note that if you reimplement paintCell(), i.e. don't
use \l{QTableItem}s, you must reimplement other functions: see the
notes on large tables.
Note that the painter is not clipped by default in order to get
maximum efficiency. If you want clipping, use code like this:
\code
p->setClipRect( cellRect(row, col), QPainter::CoordPainter );
//... your drawing code
p->setClipping( FALSE );
\endcode
*/
void QTable::paintCell( QPainter *p, int row, int col,
const QRect &cr, bool selected, const QColorGroup &cg )
{
if ( focusStl == SpreadSheet && selected &&
row == curRow &&
col == curCol && ( hasFocus() || viewport()->hasFocus() ) )
selected = FALSE;
int w = cr.width();
int h = cr.height();
int x2 = w - 1;
int y2 = h - 1;
QTableItem *itm = item( row, col );
if ( itm ) {
p->save();
itm->paint( p, cg, cr, selected );
p->restore();
} else {
p->fillRect( 0, 0, w, h, selected ? cg.brush( QColorGroup::Highlight ) : cg.brush( QColorGroup::Base ) );
}
if ( sGrid ) {
// Draw our lines
QPen pen( p->pen() );
int gridColor = style().styleHint( QStyle::SH_Table_GridLineColor, this );
if (gridColor != -1) {
const QPalette &pal = palette();
if (cg != colorGroup()
&& cg != pal.disabled()
&& cg != pal.inactive())
p->setPen(cg.mid());
else
p->setPen((QRgb)gridColor);
} else {
p->setPen(cg.mid());
}
p->drawLine( x2, 0, x2, y2 );
p->drawLine( 0, y2, x2, y2 );
p->setPen( pen );
}
}
/*!
Draws the focus rectangle of the current cell (see currentRow(),
currentColumn()).
The painter \a p is already translated to the cell's origin, while
\a cr specifies the cell's geometry in content coordinates.
*/
void QTable::paintFocus( QPainter *p, const QRect &cr )
{
if ( !hasFocus() && !viewport()->hasFocus() )
return;
QRect focusRect( 0, 0, cr.width(), cr.height() );
if ( focusStyle() == SpreadSheet ) {
p->setPen( QPen( black, 1 ) );
p->setBrush( NoBrush );
p->drawRect( focusRect.x(), focusRect.y(), focusRect.width() - 1, focusRect.height() - 1 );
p->drawRect( focusRect.x() - 1, focusRect.y() - 1, focusRect.width() + 1, focusRect.height() + 1 );
} else {
QColor c = isSelected( curRow, curCol, FALSE ) ?
colorGroup().highlight() : colorGroup().base();
style().drawPrimitive( QStyle::PE_FocusRect, p, focusRect, colorGroup(),
( isSelected( curRow, curCol, FALSE ) ?
QStyle::Style_FocusAtBorder :
QStyle::Style_Default ),
QStyleOption(c) );
}
}
/*!
This function fills the \a cw pixels wide and \a ch pixels high
rectangle starting at position \a cx, \a cy with the background
color using the painter \a p.
paintEmptyArea() is invoked by drawContents() to erase or fill
unused areas.
*/
void QTable::paintEmptyArea( QPainter *p, int cx, int cy, int cw, int ch )
{
// Regions work with shorts, so avoid an overflow and adjust the
// table size to the visible size
QSize ts( tableSize() );
ts.setWidth( QMIN( ts.width(), visibleWidth() ) );
ts.setHeight( QMIN( ts.height(), visibleHeight() ) );
// Region of the rect we should draw, calculated in viewport
// coordinates, as a region can't handle bigger coordinates
contentsToViewport2( cx, cy, cx, cy );
QRegion reg( QRect( cx, cy, cw, ch ) );
// Subtract the table from it
reg = reg.subtract( QRect( QPoint( 0, 0 ), ts ) );
// And draw the rectangles (transformed inc contents coordinates as needed)
QMemArray<QRect> r = reg.rects();
for ( int i = 0; i < (int)r.count(); ++i )
p->fillRect( QRect(viewportToContents2(r[i].topLeft()),r[i].size()), viewport()->backgroundBrush() );
}
/*!
Returns the QTableItem representing the contents of the cell at \a
row, \a col.
If \a row or \a col are out of range or no content has been set
for this cell, item() returns 0.
If you don't use \l{QTableItem}s you may need to reimplement this
function: see the notes on large tables.
\sa setItem()
*/
QTableItem *QTable::item( int row, int col ) const
{
if ( row < 0 || col < 0 || row > numRows() - 1 ||
col > numCols() - 1 || row * col >= (int)contents.size() )
return 0;
return contents[ indexOf( row, col ) ]; // contents array lookup
}
/*!
Inserts the table item \a item into the table at row \a row,
column \a col, and repaints the cell. If a table item already
exists in this cell it is deleted and replaced with \a item. The
table takes ownership of the table item.
If you don't use \l{QTableItem}s you may need to reimplement this
function: see the notes on large tables.
\sa item() takeItem()
*/
void QTable::setItem( int row, int col, QTableItem *item )
{
if ( !item )
return;
if ( (int)contents.size() != numRows() * numCols() )
resizeData( numRows() * numCols() );
int orow = item->row();
int ocol = item->col();
clearCell( row, col );
contents.insert( indexOf( row, col ), item );
item->setRow( row );
item->setCol( col );
item->t = this;
updateCell( row, col );
if ( qt_update_cell_widget )
item->updateEditor( orow, ocol );
if ( row == curRow && col == curCol && item->editType() == QTableItem::WhenCurrent ) {
if ( beginEdit( row, col, FALSE ) )
setEditMode( Editing, row, col );
}
}
/*!
Removes the QTableItem at \a row, \a col.
If you don't use \l{QTableItem}s you may need to reimplement this
function: see the notes on large tables.
*/
void QTable::clearCell( int row, int col )
{
if ( (int)contents.size() != numRows() * numCols() )
resizeData( numRows() * numCols() );
clearCellWidget( row, col );
contents.setAutoDelete( TRUE );
contents.remove( indexOf( row, col ) );
contents.setAutoDelete( FALSE );
}
/*!
Sets the text in the cell at \a row, \a col to \a text.
If the cell does not contain a table item a QTableItem is created
with an \link QTableItem::EditType EditType\endlink of \c OnTyping,
otherwise the existing table item's text (if any) is replaced with
\a text.
\sa text() setPixmap() setItem() QTableItem::setText()
*/
void QTable::setText( int row, int col, const QString &text )
{
QTableItem *itm = item( row, col );
if ( itm ) {
itm->setText( text );
itm->updateEditor( row, col );
updateCell( row, col );
} else {
QTableItem *i = new QTableItem( this, QTableItem::OnTyping,
text, QPixmap() );
setItem( row, col, i );
}
}
/*!
Sets the pixmap in the cell at \a row, \a col to \a pix.
If the cell does not contain a table item a QTableItem is created
with an \link QTableItem::EditType EditType\endlink of \c OnTyping,
otherwise the existing table item's pixmap (if any) is replaced
with \a pix.
Note that \l{QComboTableItem}s and \l{QCheckTableItem}s don't show
pixmaps.
\sa pixmap() setText() setItem() QTableItem::setPixmap()
*/
void QTable::setPixmap( int row, int col, const QPixmap &pix )
{
QTableItem *itm = item( row, col );
if ( itm ) {
itm->setPixmap( pix );
updateCell( row, col );
} else {
QTableItem *i = new QTableItem( this, QTableItem::OnTyping,
QString::null, pix );
setItem( row, col, i );
}
}
/*!
Returns the text in the cell at \a row, \a col, or QString::null
if the relevant item does not exist or has no text.
\sa setText() setPixmap()
*/
QString QTable::text( int row, int col ) const
{
QTableItem *itm = item( row, col );
if ( itm )
return itm->text();
return QString::null;
}
/*!
Returns the pixmap set for the cell at \a row, \a col, or a
null-pixmap if the cell contains no pixmap.
\sa setPixmap()
*/
QPixmap QTable::pixmap( int row, int col ) const
{
QTableItem *itm = item( row, col );
if ( itm )
return itm->pixmap();
return QPixmap();
}
/*!
Moves the focus to the cell at \a row, \a col.
\sa currentRow() currentColumn()
*/
void QTable::setCurrentCell( int row, int col )
{
setCurrentCell( row, col, TRUE, TRUE );
}
// need to use a define, as leftMargin() is protected
#define VERTICALMARGIN \
( QApplication::reverseLayout() ? \
rightMargin() \
: \
leftMargin() \
)
/*! \internal */
void QTable::setCurrentCell( int row, int col, bool updateSelections, bool ensureVisible )
{
QTableItem *oldItem = item( curRow, curCol );
if ( row > numRows() - 1 )
row = numRows() - 1;
if ( col > numCols() - 1 )
col = numCols() - 1;
if ( curRow == row && curCol == col )
return;
QTableItem *itm = oldItem;
if ( itm && itm->editType() != QTableItem::Always && itm->editType() != QTableItem::Never )
endEdit( itm->row(), itm->col(), TRUE, FALSE );
int oldRow = curRow;
int oldCol = curCol;
curRow = row;
curCol = col;
repaintCell( oldRow, oldCol );
repaintCell( curRow, curCol );
if ( ensureVisible )
ensureCellVisible( curRow, curCol );
emit currentChanged( row, col );
if ( oldCol != curCol ) {
if ( !isColumnSelected( oldCol ) )
topHeader->setSectionState( oldCol, QTableHeader::Normal );
else if ( isRowSelection( selectionMode() ) )
topHeader->setSectionState( oldCol, QTableHeader::Selected );
topHeader->setSectionState( curCol, isColumnSelected( curCol, TRUE ) ?
QTableHeader::Selected : QTableHeader::Bold );
}
if ( oldRow != curRow ) {
if ( !isRowSelected( oldRow ) )
leftHeader->setSectionState( oldRow, QTableHeader::Normal );
leftHeader->setSectionState( curRow, isRowSelected( curRow, TRUE ) ?
QTableHeader::Selected : QTableHeader::Bold );
}
itm = item( curRow, curCol );
QPoint cellPos( columnPos( curCol ) + leftMargin() - contentsX(),
rowPos( curRow ) + topMargin() - contentsY() );
setMicroFocusHint( cellPos.x(), cellPos.y(), columnWidth( curCol ),
rowHeight( curRow ), ( itm && itm->editType() != QTableItem::Never ) );
if ( cellWidget( oldRow, oldCol ) &&
cellWidget( oldRow, oldCol )->hasFocus() )
viewport()->setFocus();
if ( itm && itm->editType() == QTableItem::WhenCurrent ) {
if ( beginEdit( itm->row(), itm->col(), FALSE ) )
setEditMode( Editing, itm->row(), itm->col() );
} else if ( itm && itm->editType() == QTableItem::Always ) {
if ( cellWidget( itm->row(), itm->col() ) )
cellWidget( itm->row(), itm->col() )->setFocus();
}
if ( updateSelections && isRowSelection( selectionMode() ) &&
!isSelected( curRow, curCol, FALSE ) ) {
if ( selectionMode() == QTable::SingleRow )
clearSelection();
currentSel = new QTableSelection();
selections.append( currentSel );
currentSel->init( curRow, 0 );
currentSel->expandTo( curRow, numCols() - 1 );
repaintSelections( 0, currentSel );
}
}
/*!
Scrolls the table until the cell at \a row, \a col becomes
visible.
*/
void QTable::ensureCellVisible( int row, int col )
{
if ( !isUpdatesEnabled() || !viewport()->isUpdatesEnabled() )
return;
int cw = columnWidth( col );
int rh = rowHeight( row );
if ( cw < visibleWidth() )
ensureVisible( columnPos( col ) + cw / 2, rowPos( row ) + rh / 2, cw / 2, rh / 2 );
else
ensureVisible( columnPos( col ), rowPos( row ) + rh / 2, 0, rh / 2 );
}
/*!
Returns TRUE if the cell at \a row, \a col is selected; otherwise
returns FALSE.
\sa isRowSelected() isColumnSelected()
*/
bool QTable::isSelected( int row, int col ) const
{
return isSelected( row, col, TRUE );
}
/*! \internal */
bool QTable::isSelected( int row, int col, bool includeCurrent ) const
{
QPtrListIterator<QTableSelection> it( selections );
QTableSelection *s;
while ( ( s = it.current() ) != 0 ) {
++it;
if ( s->isActive() &&
row >= s->topRow() &&
row <= s->bottomRow() &&
col >= s->leftCol() &&
col <= s->rightCol() )
return TRUE;
if ( includeCurrent && row == currentRow() && col == currentColumn() )
return TRUE;
}
return FALSE;
}
/*!
Returns TRUE if row \a row is selected; otherwise returns FALSE.
If \a full is FALSE (the default), 'row is selected' means that at
least one cell in the row is selected. If \a full is TRUE, then 'row
is selected' means every cell in the row is selected.
\sa isColumnSelected() isSelected()
*/
bool QTable::isRowSelected( int row, bool full ) const
{
if ( !full ) {
QPtrListIterator<QTableSelection> it( selections );
QTableSelection *s;
while ( ( s = it.current() ) != 0 ) {
++it;
if ( s->isActive() &&
row >= s->topRow() &&
row <= s->bottomRow() )
return TRUE;
if ( row == currentRow() )
return TRUE;
}
} else {
QPtrListIterator<QTableSelection> it( selections );
QTableSelection *s;
while ( ( s = it.current() ) != 0 ) {
++it;
if ( s->isActive() &&
row >= s->topRow() &&
row <= s->bottomRow() &&
s->leftCol() == 0 &&
s->rightCol() == numCols() - 1 )
return TRUE;
}
}
return FALSE;
}
/*!
Returns TRUE if column \a col is selected; otherwise returns FALSE.
If \a full is FALSE (the default), 'column is selected' means that
at least one cell in the column is selected. If \a full is TRUE,
then 'column is selected' means every cell in the column is
selected.
\sa isRowSelected() isSelected()
*/
bool QTable::isColumnSelected( int col, bool full ) const
{
if ( !full ) {
QPtrListIterator<QTableSelection> it( selections );
QTableSelection *s;
while ( ( s = it.current() ) != 0 ) {
++it;
if ( s->isActive() &&
col >= s->leftCol() &&
col <= s->rightCol() )
return TRUE;
if ( col == currentColumn() )
return TRUE;
}
} else {
QPtrListIterator<QTableSelection> it( selections );
QTableSelection *s;
while ( ( s = it.current() ) != 0 ) {
++it;
if ( s->isActive() &&
col >= s->leftCol() &&
col <= s->rightCol() &&
s->topRow() == 0 &&
s->bottomRow() == numRows() - 1 )
return TRUE;
}
}
return FALSE;
}
/*!
\property QTable::numSelections
\brief The number of selections.
\sa currentSelection()
*/
int QTable::numSelections() const
{
return selections.count();
}
/*!
Returns selection number \a num, or an inactive QTableSelection if \a
num is out of range (see QTableSelection::isActive()).
*/
QTableSelection QTable::selection( int num ) const
{
if ( num < 0 || num >= (int)selections.count() )
return QTableSelection();
QTableSelection *s = ( (QTable*)this )->selections.at( num );
return *s;
}
/*!
Adds a selection described by \a s to the table and returns its
number or -1 if the selection is invalid.
Remember to call QTableSelection::init() and
QTableSelection::expandTo() to make the selection valid (see also
QTableSelection::isActive(), or use the
QTableSelection(int,int,int,int) constructor).
\sa numSelections() removeSelection() clearSelection()
*/
int QTable::addSelection( const QTableSelection &s )
{
if ( !s.isActive() )
return -1;
const int maxr = numRows()-1;
const int maxc = numCols()-1;
QTableSelection *sel = new QTableSelection( QMIN(s.anchorRow(), maxr), QMIN(s.anchorCol(), maxc),
QMIN(s.bottomRow(), maxr), QMIN(s.rightCol(), maxc) );
selections.append( sel );
repaintSelections( 0, sel, TRUE, TRUE );
emit selectionChanged();
return selections.count() - 1;
}
/*!
If the table has a selection, \a s, this selection is removed from
the table.
\sa addSelection() numSelections()
*/
void QTable::removeSelection( const QTableSelection &s )
{
selections.setAutoDelete( FALSE );
for ( QTableSelection *sel = selections.first(); sel; sel = selections.next() ) {
if ( s == *sel ) {
selections.removeRef( sel );
repaintSelections( sel, 0, TRUE, TRUE );
if ( sel == currentSel )
currentSel = 0;
delete sel;
}
}
selections.setAutoDelete( TRUE );
emit selectionChanged();
}
/*!
\overload
Removes selection number \a num from the table.
\sa numSelections() addSelection() clearSelection()
*/
void QTable::removeSelection( int num )
{
if ( num < 0 || num >= (int)selections.count() )
return;
QTableSelection *s = selections.at( num );
if ( s == currentSel )
currentSel = 0;
selections.removeRef( s );
repaintContents( FALSE );
}
/*!
Returns the number of the current selection or -1 if there is no
current selection.
\sa numSelections()
*/
int QTable::currentSelection() const
{
if ( !currentSel )
return -1;
return ( (QTable*)this )->selections.findRef( currentSel );
}
/*! Selects the range starting at \a start_row and \a start_col and
ending at \a end_row and \a end_col.
\sa QTableSelection
*/
void QTable::selectCells( int start_row, int start_col, int end_row, int end_col )
{
const int maxr = numRows()-1;
const int maxc = numCols()-1;
start_row = QMIN( maxr, QMAX( 0, start_row ) );
start_col = QMIN( maxc, QMAX( 0, start_col ) );
end_row = QMIN( maxr, end_row );
end_col = QMIN( maxc, end_col );
QTableSelection sel( start_row, start_col, end_row, end_col );
addSelection( sel );
}
/*! Selects the row \a row.
\sa QTableSelection
*/
// ### Make this virtual in 4.0 and remove hack for QDataTable
void QTable::selectRow( int row )
{
row = QMIN(numRows()-1, row);
if ( row < 0 )
return;
bool isDataTable = FALSE;
#ifndef QT_NO_SQL
isDataTable = ::qt_cast<QDataTable*>(this) != 0;
#endif
if ( isDataTable || selectionMode() == SingleRow ) {
setCurrentCell( row, currentColumn() );
} else {
QTableSelection sel( row, 0, row, numCols() - 1 );
addSelection( sel );
}
}
/*! Selects the column \a col.
\sa QTableSelection
*/
// ### Make this virtual in 4.0
void QTable::selectColumn( int col )
{
col = QMIN(numCols()-1, col);
QTableSelection sel( 0, col, numRows() - 1, col );
addSelection( sel );
}
/*! \reimp
*/
void QTable::contentsMousePressEvent( QMouseEvent* e )
{
contentsMousePressEventEx( e );
}
void QTable::contentsMousePressEventEx( QMouseEvent* e )
{
shouldClearSelection = FALSE;
if ( isEditing() ) {
if ( !cellGeometry( editRow, editCol ).contains( e->pos() ) ) {
endEdit( editRow, editCol, TRUE, edMode != Editing );
} else {
e->ignore();
return;
}
}
d->redirectMouseEvent = FALSE;
int tmpRow = rowAt( e->pos().y() );
int tmpCol = columnAt( e->pos().x() );
pressedRow = tmpRow;
pressedCol = tmpCol;
fixRow( tmpRow, e->pos().y() );
fixCol( tmpCol, e->pos().x() );
startDragCol = -1;
startDragRow = -1;
if ( isSelected( tmpRow, tmpCol ) ) {
startDragCol = tmpCol;
startDragRow = tmpRow;
dragStartPos = e->pos();
}
QTableItem *itm = item( pressedRow, pressedCol );
if ( itm && !itm->isEnabled() ) {
emit pressed( tmpRow, tmpCol, e->button(), e->pos() );
return;
}
if ( ( e->state() & ShiftButton ) == ShiftButton ) {
int oldRow = curRow;
int oldCol = curCol;
setCurrentCell( tmpRow, tmpCol, selMode == SingleRow, TRUE );
if ( selMode != NoSelection && selMode != SingleRow ) {
if ( !currentSel ) {
currentSel = new QTableSelection();
selections.append( currentSel );
if ( !isRowSelection( selectionMode() ) )
currentSel->init( oldRow, oldCol );
else
currentSel->init( oldRow, 0 );
}
QTableSelection oldSelection = *currentSel;
if ( !isRowSelection( selectionMode() ) )
currentSel->expandTo( tmpRow, tmpCol );
else
currentSel->expandTo( tmpRow, numCols() - 1 );
repaintSelections( &oldSelection, currentSel );
emit selectionChanged();
}
} else if ( ( e->state() & ControlButton ) == ControlButton ) {
setCurrentCell( tmpRow, tmpCol, FALSE, TRUE );
if ( selMode != NoSelection ) {
if ( selMode == Single || ( selMode == SingleRow && !isSelected( tmpRow, tmpCol, FALSE ) ) )
clearSelection();
if ( !(selMode == SingleRow && isSelected( tmpRow, tmpCol, FALSE )) ) {
currentSel = new QTableSelection();
selections.append( currentSel );
if ( !isRowSelection( selectionMode() ) ) {
currentSel->init( tmpRow, tmpCol );
currentSel->expandTo( tmpRow, tmpCol );
} else {
currentSel->init( tmpRow, 0 );
currentSel->expandTo( tmpRow, numCols() - 1 );
repaintSelections( 0, currentSel );
}
emit selectionChanged();
}
}
} else {
setCurrentCell( tmpRow, tmpCol, FALSE, TRUE );
QTableItem *itm = item( tmpRow, tmpCol );
if ( itm && itm->editType() == QTableItem::WhenCurrent ) {
QWidget *w = cellWidget( tmpRow, tmpCol );
if ( ::qt_cast<QComboBox*>(w) || ::qt_cast<QButton*>(w) ) {
QMouseEvent ev( e->type(), w->mapFromGlobal( e->globalPos() ),
e->globalPos(), e->button(), e->state() );
QApplication::sendPostedEvents( w, 0 );
QApplication::sendEvent( w, &ev );
d->redirectMouseEvent = TRUE;
}
}
if ( isSelected( tmpRow, tmpCol, FALSE ) ) {
shouldClearSelection = TRUE;
} else {
bool b = signalsBlocked();
if ( selMode != NoSelection )
blockSignals( TRUE );
clearSelection();
blockSignals( b );
if ( selMode != NoSelection ) {
currentSel = new QTableSelection();
selections.append( currentSel );
if ( !isRowSelection( selectionMode() ) ) {
currentSel->init( tmpRow, tmpCol );
currentSel->expandTo( tmpRow, tmpCol );
} else {
currentSel->init( tmpRow, 0 );
currentSel->expandTo( tmpRow, numCols() - 1 );
repaintSelections( 0, currentSel );
}
emit selectionChanged();
}
}
}
emit pressed( tmpRow, tmpCol, e->button(), e->pos() );
}
/*! \reimp
*/
void QTable::contentsMouseDoubleClickEvent( QMouseEvent *e )
{
if ( e->button() != LeftButton )
return;
if ( !isRowSelection( selectionMode() ) )
clearSelection();
int tmpRow = rowAt( e->pos().y() );
int tmpCol = columnAt( e->pos().x() );
QTableItem *itm = item( tmpRow, tmpCol );
if ( itm && !itm->isEnabled() )
return;
if ( tmpRow != -1 && tmpCol != -1 ) {
if ( beginEdit( tmpRow, tmpCol, FALSE ) )
setEditMode( Editing, tmpRow, tmpCol );
}
emit doubleClicked( tmpRow, tmpCol, e->button(), e->pos() );
}
/*!
Sets the current edit mode to \a mode, the current edit row to \a
row and the current edit column to \a col.
\sa EditMode
*/
void QTable::setEditMode( EditMode mode, int row, int col )
{
edMode = mode;
editRow = row;
editCol = col;
}
/*! \reimp
*/
void QTable::contentsMouseMoveEvent( QMouseEvent *e )
{
if ( (e->state() & MouseButtonMask) == NoButton )
return;
int tmpRow = rowAt( e->pos().y() );
int tmpCol = columnAt( e->pos().x() );
fixRow( tmpRow, e->pos().y() );
fixCol( tmpCol, e->pos().x() );
#ifndef QT_NO_DRAGANDDROP
if ( dragEnabled() && startDragRow != -1 && startDragCol != -1 ) {
if (QPoint(dragStartPos - e->pos()).manhattanLength() > QApplication::startDragDistance())
startDrag();
return;
}
#endif
if ( selectionMode() == MultiRow && ( e->state() & ControlButton ) == ControlButton )
shouldClearSelection = FALSE;
if ( shouldClearSelection ) {
clearSelection();
if ( selMode != NoSelection ) {
currentSel = new QTableSelection();
selections.append( currentSel );
if ( !isRowSelection( selectionMode() ) )
currentSel->init( tmpRow, tmpCol );
else
currentSel->init( tmpRow, 0 );
emit selectionChanged();
}
shouldClearSelection = FALSE;
}
QPoint pos = mapFromGlobal( e->globalPos() );
pos -= QPoint( leftHeader->width(), topHeader->height() );
autoScrollTimer->stop();
doAutoScroll();
if ( pos.x() < 0 || pos.x() > visibleWidth() || pos.y() < 0 || pos.y() > visibleHeight() )
autoScrollTimer->start( 100, TRUE );
}
/*! \internal
*/
void QTable::doValueChanged()
{
emit valueChanged( editRow, editCol );
}
/*! \internal
*/
void QTable::doAutoScroll()
{
QPoint pos = QCursor::pos();
pos = mapFromGlobal( pos );
pos -= QPoint( leftHeader->width(), topHeader->height() );
int tmpRow = curRow;
int tmpCol = curCol;
if ( pos.y() < 0 )
tmpRow--;
else if ( pos.y() > visibleHeight() )
tmpRow++;
if ( pos.x() < 0 )
tmpCol--;
else if ( pos.x() > visibleWidth() )
tmpCol++;
pos += QPoint( contentsX(), contentsY() );
if ( tmpRow == curRow )
tmpRow = rowAt( pos.y() );
if ( tmpCol == curCol )
tmpCol = columnAt( pos.x() );
pos -= QPoint( contentsX(), contentsY() );
fixRow( tmpRow, pos.y() );
fixCol( tmpCol, pos.x() );
if ( tmpRow < 0 || tmpRow > numRows() - 1 )
tmpRow = currentRow();
if ( tmpCol < 0 || tmpCol > numCols() - 1 )
tmpCol = currentColumn();
ensureCellVisible( tmpRow, tmpCol );
if ( currentSel && selMode != NoSelection ) {
QTableSelection oldSelection = *currentSel;
bool useOld = TRUE;
if ( selMode != SingleRow ) {
if ( !isRowSelection( selectionMode() ) ) {
currentSel->expandTo( tmpRow, tmpCol );
} else {
currentSel->expandTo( tmpRow, numCols() - 1 );
}
} else {
bool currentInSelection = tmpRow == curRow && isSelected( tmpRow, tmpCol );
if ( !currentInSelection ) {
useOld = FALSE;
clearSelection();
currentSel = new QTableSelection();
selections.append( currentSel );
currentSel->init( tmpRow, 0 );
currentSel->expandTo( tmpRow, numCols() - 1 );
repaintSelections( 0, currentSel );
} else {
currentSel->expandTo( tmpRow, numCols() - 1 );
}
}
setCurrentCell( tmpRow, tmpCol, FALSE, TRUE );
repaintSelections( useOld ? &oldSelection : 0, currentSel );
if ( currentSel && oldSelection != *currentSel )
emit selectionChanged();
} else {
setCurrentCell( tmpRow, tmpCol, FALSE, TRUE );
}
if ( pos.x() < 0 || pos.x() > visibleWidth() || pos.y() < 0 || pos.y() > visibleHeight() )
autoScrollTimer->start( 100, TRUE );
}
/*! \reimp
*/
void QTable::contentsMouseReleaseEvent( QMouseEvent *e )
{
if ( pressedRow == curRow && pressedCol == curCol )
emit clicked( curRow, curCol, e->button(), e->pos() );
if ( e->button() != LeftButton )
return;
if ( shouldClearSelection ) {
int tmpRow = rowAt( e->pos().y() );
int tmpCol = columnAt( e->pos().x() );
fixRow( tmpRow, e->pos().y() );
fixCol( tmpCol, e->pos().x() );
clearSelection();
if ( selMode != NoSelection ) {
currentSel = new QTableSelection();
selections.append( currentSel );
if ( !isRowSelection( selectionMode() ) ) {
currentSel->init( tmpRow, tmpCol );
} else {
currentSel->init( tmpRow, 0 );
currentSel->expandTo( tmpRow, numCols() - 1 );
repaintSelections( 0, currentSel );
}
emit selectionChanged();
}
shouldClearSelection = FALSE;
}
autoScrollTimer->stop();
if ( d->redirectMouseEvent && pressedRow == curRow && pressedCol == curCol &&
item( pressedRow, pressedCol ) && item( pressedRow, pressedCol )->editType() ==
QTableItem::WhenCurrent ) {
QWidget *w = cellWidget( pressedRow, pressedCol );
if ( w ) {
QMouseEvent ev( e->type(), w->mapFromGlobal( e->globalPos() ),
e->globalPos(), e->button(), e->state() );
QApplication::sendPostedEvents( w, 0 );
QApplication::sendEvent( w, &ev );
}
}
}
/*!
\reimp
*/
void QTable::contentsContextMenuEvent( QContextMenuEvent *e )
{
if ( !receivers( SIGNAL(contextMenuRequested(int,int,const QPoint&)) ) ) {
e->ignore();
return;
}
if ( e->reason() == QContextMenuEvent::Keyboard ) {
QRect r = cellGeometry( curRow, curCol );
emit contextMenuRequested( curRow, curCol, viewport()->mapToGlobal( contentsToViewport( r.center() ) ) );
} else {
int tmpRow = rowAt( e->pos().y() );
int tmpCol = columnAt( e->pos().x() );
emit contextMenuRequested( tmpRow, tmpCol, e->globalPos() );
}
}
/*! \reimp
*/
bool QTable::eventFilter( QObject *o, QEvent *e )
{
QWidget *editorWidget = cellWidget( editRow, editCol );
switch ( e->type() ) {
case QEvent::KeyPress: {
QTableItem *itm = item( curRow, curCol );
int editRow = this->editRow;
int editCol = this->editCol;
if ((d->hasRowSpan || d->hasColSpan) && !editorWidget) {
if (QTableItem *eitm = item(editRow, editCol)) {
editRow = eitm->row();
editCol = eitm->col();
editorWidget = cellWidget(editRow, editCol);
}
}
if ( isEditing() && editorWidget && o == editorWidget ) {
itm = item( editRow, editCol );
QKeyEvent *ke = (QKeyEvent*)e;
if ( ke->key() == Key_Escape ) {
if ( !itm || itm->editType() == QTableItem::OnTyping )
endEdit( editRow, editCol, FALSE, edMode != Editing );
return TRUE;
}
if ( ( ke->state() == NoButton || ke->state() == Keypad )
&& ( ke->key() == Key_Return || ke->key() == Key_Enter ) ) {
if ( !itm || itm->editType() == QTableItem::OnTyping )
endEdit( editRow, editCol, TRUE, edMode != Editing );
activateNextCell();
return TRUE;
}
if ( ke->key() == Key_Tab || ke->key() == Key_BackTab ) {
if ( ke->state() & Qt::ControlButton )
return FALSE;
if ( !itm || itm->editType() == QTableItem::OnTyping )
endEdit( editRow, editCol, TRUE, edMode != Editing );
if ( (ke->key() == Key_Tab) && !(ke->state() & ShiftButton) ) {
if ( currentColumn() >= numCols() - 1 )
return TRUE;
int cc = QMIN( numCols() - 1, currentColumn() + 1 );
while ( cc < numCols() ) {
QTableItem *i = item( currentRow(), cc );
if ( !d->hiddenCols.find( cc ) && !isColumnReadOnly( cc ) && (!i || i->isEnabled()) )
break;
++cc;
}
setCurrentCell( currentRow(), cc );
} else { // Key_BackTab
if ( currentColumn() == 0 )
return TRUE;
int cc = QMAX( 0, currentColumn() - 1 );
while ( cc >= 0 ) {
QTableItem *i = item( currentRow(), cc );
if ( !d->hiddenCols.find( cc ) && !isColumnReadOnly( cc ) && (!i || i->isEnabled()) )
break;
--cc;
}
setCurrentCell( currentRow(), cc );
}
itm = item( curRow, curCol );
if ( beginEdit( curRow, curCol, FALSE ) )
setEditMode( Editing, curRow, curCol );
return TRUE;
}
if ( ( edMode == Replacing ||
( itm && itm->editType() == QTableItem::WhenCurrent ) ) &&
( ke->key() == Key_Up || ke->key() == Key_Prior ||
ke->key() == Key_Home || ke->key() == Key_Down ||
ke->key() == Key_Next || ke->key() == Key_End ||
ke->key() == Key_Left || ke->key() == Key_Right ) ) {
if ( !itm || itm->editType() == QTableItem::OnTyping ) {
endEdit( editRow, editCol, TRUE, edMode != Editing );
}
keyPressEvent( ke );
return TRUE;
}
} else {
QObjectList *l = viewport()->queryList( "QWidget" );
if ( l && l->find( o ) != -1 ) {
delete l;
QKeyEvent *ke = (QKeyEvent*)e;
if ( ( ke->state() & ControlButton ) == ControlButton ||
( ke->key() != Key_Left && ke->key() != Key_Right &&
ke->key() != Key_Up && ke->key() != Key_Down &&
ke->key() != Key_Prior && ke->key() != Key_Next &&
ke->key() != Key_Home && ke->key() != Key_End ) )
return FALSE;
keyPressEvent( (QKeyEvent*)e );
return TRUE;
}
delete l;
}
} break;
case QEvent::FocusOut:
if ( isEditing() && editorWidget && o == editorWidget && ( (QFocusEvent*)e )->reason() != QFocusEvent::Popup ) {
QTableItem *itm = item( editRow, editCol );
if ( !itm || itm->editType() == QTableItem::OnTyping ) {
endEdit( editRow, editCol, TRUE, edMode != Editing );
return TRUE;
}
}
break;
#ifndef QT_NO_WHEELEVENT
case QEvent::Wheel:
if ( o == this || o == viewport() ) {
QWheelEvent* we = (QWheelEvent*)e;
scrollBy( 0, -we->delta() );
we->accept();
return TRUE;
}
#endif
default:
break;
}
return QScrollView::eventFilter( o, e );
}
void QTable::fixCell( int &row, int &col, int key )
{
if ( rowHeight( row ) > 0 && columnWidth( col ) > 0 )
return;
if ( rowHeight( row ) <= 0 ) {
if ( key == Key_Down ||
key == Key_Next ||
key == Key_End ) {
while ( row < numRows() && rowHeight( row ) <= 0 )
row++;
if ( rowHeight( row ) <= 0 )
row = curRow;
} else if ( key == Key_Up ||
key == Key_Prior ||
key == Key_Home )
while ( row >= 0 && rowHeight( row ) <= 0 )
row--;
if ( rowHeight( row ) <= 0 )
row = curRow;
} else if ( columnWidth( col ) <= 0 ) {
if ( key == Key_Left ) {
while ( col >= 0 && columnWidth( col ) <= 0 )
col--;
if ( columnWidth( col ) <= 0 )
col = curCol;
} else if ( key == Key_Right ) {
while ( col < numCols() && columnWidth( col ) <= 0 )
col++;
if ( columnWidth( col ) <= 0 )
col = curCol;
}
}
}
/*! \reimp
*/
void QTable::keyPressEvent( QKeyEvent* e )
{
if ( isEditing() && item( editRow, editCol ) &&
item( editRow, editCol )->editType() == QTableItem::OnTyping )
return;
int tmpRow = curRow;
int tmpCol = curCol;
int oldRow = tmpRow;
int oldCol = tmpCol;
bool navigationKey = FALSE;
int r;
switch ( e->key() ) {
case Key_Left:
tmpCol = QMAX( 0, tmpCol - 1 );
navigationKey = TRUE;
break;
case Key_Right:
tmpCol = QMIN( numCols() - 1, tmpCol + 1 );
navigationKey = TRUE;
break;
case Key_Up:
tmpRow = QMAX( 0, tmpRow - 1 );
navigationKey = TRUE;
break;
case Key_Down:
tmpRow = QMIN( numRows() - 1, tmpRow + 1 );
navigationKey = TRUE;
break;
case Key_Prior:
r = QMAX( 0, rowAt( rowPos( tmpRow ) - visibleHeight() ) );
if ( r < tmpRow || tmpRow < 0 )
tmpRow = r;
navigationKey = TRUE;
break;
case Key_Next:
r = QMIN( numRows() - 1, rowAt( rowPos( tmpRow ) + visibleHeight() ) );
if ( r > tmpRow )
tmpRow = r;
else
tmpRow = numRows() - 1;
navigationKey = TRUE;
break;
case Key_Home:
tmpRow = 0;
navigationKey = TRUE;
break;
case Key_End:
tmpRow = numRows() - 1;
navigationKey = TRUE;
break;
case Key_F2:
if ( beginEdit( tmpRow, tmpCol, FALSE ) )
setEditMode( Editing, tmpRow, tmpCol );
break;
case Key_Enter: case Key_Return:
activateNextCell();
return;
case Key_Tab: case Key_BackTab:
if ( (e->key() == Key_Tab) && !(e->state() & ShiftButton) ) {
if ( currentColumn() >= numCols() - 1 )
return;
int cc = QMIN( numCols() - 1, currentColumn() + 1 );
while ( cc < numCols() ) {
QTableItem *i = item( currentRow(), cc );
if ( !d->hiddenCols.find( cc ) && !isColumnReadOnly( cc ) && (!i || i->isEnabled()) )
break;
++cc;
}
setCurrentCell( currentRow(), cc );
} else { // Key_BackTab
if ( currentColumn() == 0 )
return;
int cc = QMAX( 0, currentColumn() - 1 );
while ( cc >= 0 ) {
QTableItem *i = item( currentRow(), cc );
if ( !d->hiddenCols.find( cc ) && !isColumnReadOnly( cc ) && (!i || i->isEnabled()) )
break;
--cc;
}
setCurrentCell( currentRow(), cc );
}
return;
case Key_Escape:
e->ignore();
return;
default: // ... or start in-place editing
if ( e->text()[ 0 ].isPrint() ) {
QTableItem *itm = item( tmpRow, tmpCol );
if ( !itm || itm->editType() == QTableItem::OnTyping ) {
QWidget *w = beginEdit( tmpRow, tmpCol,
itm ? itm->isReplaceable() : TRUE );
if ( w ) {
setEditMode( ( !itm || ( itm && itm->isReplaceable() )
? Replacing : Editing ), tmpRow, tmpCol );
QApplication::sendEvent( w, e );
return;
}
}
}
e->ignore();
return;
}
if ( navigationKey ) {
fixCell( tmpRow, tmpCol, e->key() );
if ( ( e->state() & ShiftButton ) == ShiftButton &&
selMode != NoSelection && selMode != SingleRow ) {
bool justCreated = FALSE;
setCurrentCell( tmpRow, tmpCol, FALSE, TRUE );
if ( !currentSel ) {
justCreated = TRUE;
currentSel = new QTableSelection();
selections.append( currentSel );
if ( !isRowSelection( selectionMode() ) )
currentSel->init( oldRow, oldCol );
else
currentSel->init( oldRow < 0 ? 0 : oldRow, 0 );
}
QTableSelection oldSelection = *currentSel;
if ( !isRowSelection( selectionMode() ) )
currentSel->expandTo( tmpRow, tmpCol );
else
currentSel->expandTo( tmpRow, numCols() - 1 );
repaintSelections( justCreated ? 0 : &oldSelection, currentSel );
emit selectionChanged();
} else {
setCurrentCell( tmpRow, tmpCol, FALSE, TRUE );
if ( !isRowSelection( selectionMode() ) ) {
clearSelection();
} else {
bool currentInSelection = tmpRow == oldRow && isSelected( tmpRow, tmpCol, FALSE );
if ( !currentInSelection ) {
bool hasOldSel = FALSE;
QTableSelection oldSelection;
if ( selectionMode() == MultiRow ) {
bool b = signalsBlocked();
blockSignals( TRUE );
clearSelection();
blockSignals( b );
} else {
if ( currentSel ) {
oldSelection = *currentSel;
hasOldSel = TRUE;
selections.removeRef( currentSel );
leftHeader->setSectionState( oldSelection.topRow(), QTableHeader::Normal );
}
}
currentSel = new QTableSelection();
selections.append( currentSel );
currentSel->init( tmpRow, 0 );
currentSel->expandTo( tmpRow, numCols() - 1 );
repaintSelections( hasOldSel ? &oldSelection : 0, currentSel, !hasOldSel );
emit selectionChanged();
}
}
}
} else {
setCurrentCell( tmpRow, tmpCol, FALSE, TRUE );
}
}
/*! \reimp
*/
void QTable::focusInEvent( QFocusEvent* )
{
d->inMenuMode = FALSE;
QWidget *editorWidget = cellWidget( editRow, editCol );
updateCell( curRow, curCol );
if ( style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this ) )
repaintSelections();
if ( isEditing() && editorWidget )
editorWidget->setFocus();
QPoint cellPos( columnPos( curCol ) + leftMargin() - contentsX(), rowPos( curRow ) + topMargin() - contentsY() );
QTableItem *itm = item( curRow, curCol );
setMicroFocusHint( cellPos.x(), cellPos.y(), columnWidth( curCol ), rowHeight( curRow ), ( itm && itm->editType() != QTableItem::Never ) );
}
/*! \reimp
*/
void QTable::focusOutEvent( QFocusEvent* )
{
updateCell( curRow, curCol );
if (style().styleHint( QStyle::SH_ItemView_ChangeHighlightOnFocus, this )) {
d->inMenuMode =
QFocusEvent::reason() == QFocusEvent::Popup ||
(qApp->focusWidget() && qApp->focusWidget()->inherits("QMenuBar"));
if ( !d->inMenuMode )
repaintSelections();
}
}
/*! \reimp
*/
QSize QTable::sizeHint() const
{
if ( cachedSizeHint().isValid() )
return cachedSizeHint();
constPolish();
QSize s = tableSize();
QSize sh;
if ( s.width() < 500 && s.height() < 500 ) {
sh = QSize( tableSize().width() + VERTICALMARGIN + 5,
tableSize().height() + topMargin() + 5 );
} else {
sh = QScrollView::sizeHint();
if ( !topHeader->isHidden() )
sh.setHeight( sh.height() + topHeader->height() );
if ( !leftHeader->isHidden() )
sh.setWidth( sh.width() + leftHeader->width() );
}
setCachedSizeHint( sh );
return sh;
}
/*! \reimp
*/
void QTable::viewportResizeEvent( QResizeEvent *e )
{
QScrollView::viewportResizeEvent( e );
updateGeometries();
}
/*! \reimp
*/
void QTable::showEvent( QShowEvent *e )
{
QScrollView::showEvent( e );
QRect r( cellGeometry( numRows() - 1, numCols() - 1 ) );
resizeContents( r.right() + 1, r.bottom() + 1 );
updateGeometries();
}
/*! \reimp
*/
void QTable::paintEvent( QPaintEvent *e )
{
QRect topLeftCorner = QStyle::visualRect( QRect(frameWidth(), frameWidth(), VERTICALMARGIN, topMargin() ), rect() );
erase( topLeftCorner ); // erase instead of widget on top
QScrollView::paintEvent( e );
#ifdef Q_OS_TEMP
QPainter p( this );
p.drawLine( topLeftCorner.bottomLeft(), topLeftCorner.bottomRight() );
p.drawLine( topLeftCorner.bottomRight(), topLeftCorner.topRight() );
#endif
}
static bool inUpdateCell = FALSE;
/*!
Repaints the cell at \a row, \a col.
*/
void QTable::updateCell( int row, int col )
{
if ( inUpdateCell || row < 0 || col < 0 )
return;
inUpdateCell = TRUE;
QRect cg = cellGeometry( row, col );
QRect r( contentsToViewport( QPoint( cg.x() - 2, cg.y() - 2 ) ),
QSize( cg.width() + 4, cg.height() + 4 ) );
if (viewport()->rect().intersects(r))
QApplication::postEvent( viewport(), new QPaintEvent( r, FALSE ) );
inUpdateCell = FALSE;
}
void QTable::repaintCell( int row, int col )
{
if ( row == -1 || col == -1 )
return;
QRect cg = cellGeometry( row, col );
QRect r( QPoint( cg.x() - 2, cg.y() - 2 ),
QSize( cg.width() + 4, cg.height() + 4 ) );
QRect v = viewport()->rect();
v.moveBy(contentsX(), contentsY());
if (v.intersects(r))
repaintContents( r, FALSE );
}
void QTable::contentsToViewport2( int x, int y, int& vx, int& vy )
{
const QPoint v = contentsToViewport2( QPoint( x, y ) );
vx = v.x();
vy = v.y();
}
QPoint QTable::contentsToViewport2( const QPoint &p )
{
return QPoint( p.x() - contentsX(),
p.y() - contentsY() );
}
QPoint QTable::viewportToContents2( const QPoint& vp )
{
return QPoint( vp.x() + contentsX(),
vp.y() + contentsY() );
}
void QTable::viewportToContents2( int vx, int vy, int& x, int& y )
{
const QPoint c = viewportToContents2( QPoint( vx, vy ) );
x = c.x();
y = c.y();
}
/*!
This function should be called whenever the column width of \a col
has been changed. It updates the geometry of any affected columns
and repaints the table to reflect the changes it has made.
*/
void QTable::columnWidthChanged( int col )
{
int p = columnPos( col );
if ( d->hasColSpan )
p = contentsX();
updateContents( p, contentsY(), contentsWidth(), visibleHeight() );
QSize s( tableSize() );
int w = contentsWidth();
resizeContents( s.width(), s.height() );
if ( contentsWidth() < w )
repaintContents( s.width(), contentsY(),
w - s.width() + 1, visibleHeight(), TRUE );
else
repaintContents( w, contentsY(),
s.width() - w + 1, visibleHeight(), FALSE );
// update widgets that are affected by this change
if ( widgets.size() ) {
int last = isHidden() ? numCols() - 1 : d->lastVisCol;
for ( int c = col; c <= last; ++c )
updateColWidgets( c );
}
delayedUpdateGeometries();
}
/*!
This function should be called whenever the row height of \a row
has been changed. It updates the geometry of any affected rows and
repaints the table to reflect the changes it has made.
*/
void QTable::rowHeightChanged( int row )
{
int p = rowPos( row );
if ( d->hasRowSpan )
p = contentsY();
updateContents( contentsX(), p, visibleWidth(), contentsHeight() );
QSize s( tableSize() );
int h = contentsHeight();
resizeContents( s.width(), s.height() );
if ( contentsHeight() < h ) {
repaintContents( contentsX(), contentsHeight(),
visibleWidth(), h - s.height() + 1, TRUE );
} else {
repaintContents( contentsX(), h,
visibleWidth(), s.height() - h + 1, FALSE );
}
// update widgets that are affected by this change
if ( widgets.size() ) {
d->lastVisRow = rowAt( contentsY() + visibleHeight() + ( s.height() - h + 1 ) );
int last = isHidden() ? numRows() - 1 : d->lastVisRow;
for ( int r = row; r <= last; ++r )
updateRowWidgets( r );
}
delayedUpdateGeometries();
}
/*! \internal */
void QTable::updateRowWidgets( int row )
{
for ( int i = 0; i < numCols(); ++i ) {
QWidget *w = cellWidget( row, i );
if ( !w )
continue;
moveChild( w, columnPos( i ), rowPos( row ) );
w->resize( columnWidth( i ) - 1, rowHeight( row ) - 1 );
}
}
/*! \internal */
void QTable::updateColWidgets( int col )
{
for ( int i = 0; i < numRows(); ++i ) {
QWidget *w = cellWidget( i, col );
if ( !w )
continue;
moveChild( w, columnPos( col ), rowPos( i ) );
w->resize( columnWidth( col ) - 1, rowHeight( i ) - 1 );
}
}
/*!
This function is called when column order is to be changed, i.e.
when the user moved the column header \a section from \a fromIndex
to \a toIndex.
If you want to change the column order programmatically, call
swapRows() or swapColumns();
\sa QHeader::indexChange() rowIndexChanged()
*/
void QTable::columnIndexChanged( int, int fromIndex, int toIndex )
{
if ( doSort && lastSortCol == fromIndex && topHeader )
topHeader->setSortIndicator( toIndex, topHeader->sortIndicatorOrder() );
repaintContents( contentsX(), contentsY(),
visibleWidth(), visibleHeight(), FALSE );
}
/*!
This function is called when the order of the rows is to be
changed, i.e. the user moved the row header section \a section
from \a fromIndex to \a toIndex.
If you want to change the order programmatically, call swapRows()
or swapColumns();
\sa QHeader::indexChange() columnIndexChanged()
*/
void QTable::rowIndexChanged( int, int, int )
{
repaintContents( contentsX(), contentsY(),
visibleWidth(), visibleHeight(), FALSE );
}
/*!
This function is called when the column \a col has been clicked.
The default implementation sorts this column if sorting() is TRUE.
*/
void QTable::columnClicked( int col )
{
if ( !sorting() )
return;
if ( col == lastSortCol ) {
asc = !asc;
} else {
lastSortCol = col;
asc = TRUE;
}
sortColumn( lastSortCol, asc );
}
/*!
\property QTable::sorting
\brief whether a click on the header of a column sorts that column
\sa sortColumn()
*/
void QTable::setSorting( bool b )
{
doSort = b;
if ( topHeader )
topHeader->setSortIndicator( b ? lastSortCol : -1 );
}
bool QTable::sorting() const
{
return doSort;
}
static bool inUpdateGeometries = FALSE;
void QTable::delayedUpdateGeometries()
{
d->geomTimer->start( 0, TRUE );
}
void QTable::updateGeometriesSlot()
{
updateGeometries();
}
/*!
This function updates the geometries of the left and top header.
You do not normally need to call this function.
*/
void QTable::updateGeometries()
{
if ( inUpdateGeometries )
return;
inUpdateGeometries = TRUE;
QSize ts = tableSize();
if ( topHeader->offset() &&
ts.width() < topHeader->offset() + topHeader->width() )
horizontalScrollBar()->setValue( ts.width() - topHeader->width() );
if ( leftHeader->offset() &&
ts.height() < leftHeader->offset() + leftHeader->height() )
verticalScrollBar()->setValue( ts.height() - leftHeader->height() );
leftHeader->setGeometry( QStyle::visualRect( QRect( frameWidth(), topMargin() + frameWidth(),
VERTICALMARGIN, visibleHeight() ), rect() ) );
topHeader->setGeometry( QStyle::visualRect( QRect(VERTICALMARGIN + frameWidth(), frameWidth(),
visibleWidth(), topMargin() ), rect() ) );
horizontalScrollBar()->raise();
verticalScrollBar()->raise();
topHeader->updateStretches();
leftHeader->updateStretches();
inUpdateGeometries = FALSE;
}
/*!
Returns the width of column \a col.
\sa setColumnWidth() rowHeight()
*/
int QTable::columnWidth( int col ) const
{
return topHeader->sectionSize( col );
}
/*!
Returns the height of row \a row.
\sa setRowHeight() columnWidth()
*/
int QTable::rowHeight( int row ) const
{
return leftHeader->sectionSize( row );
}
/*!
Returns the x-coordinate of the column \a col in content
coordinates.
\sa columnAt() rowPos()
*/
int QTable::columnPos( int col ) const
{
return topHeader->sectionPos( col );
}
/*!
Returns the y-coordinate of the row \a row in content coordinates.
\sa rowAt() columnPos()
*/
int QTable::rowPos( int row ) const
{
return leftHeader->sectionPos( row );
}
/*!
Returns the number of the column at position \a x. \a x must be
given in content coordinates.
\sa columnPos() rowAt()
*/
int QTable::columnAt( int x ) const
{
return topHeader->sectionAt( x );
}
/*!
Returns the number of the row at position \a y. \a y must be given
in content coordinates.
\sa rowPos() columnAt()
*/
int QTable::rowAt( int y ) const
{
return leftHeader->sectionAt( y );
}
/*!
Returns the bounding rectangle of the cell at \a row, \a col in
content coordinates.
*/
QRect QTable::cellGeometry( int row, int col ) const
{
QTableItem *itm = item( row, col );
if ( !itm || ( itm->rowSpan() == 1 && itm->colSpan() == 1 ) )
return QRect( columnPos( col ), rowPos( row ),
columnWidth( col ), rowHeight( row ) );
while ( row != itm->row() )
row--;
while ( col != itm->col() )
col--;
QRect rect( columnPos( col ), rowPos( row ),
columnWidth( col ), rowHeight( row ) );
for ( int r = 1; r < itm->rowSpan(); ++r )
rect.setHeight( rect.height() + rowHeight( r + row ) );
for ( int c = 1; c < itm->colSpan(); ++c )
rect.setWidth( rect.width() + columnWidth( c + col ) );
return rect;
}
/*!
Returns the size of the table.
This is the same as the coordinates of the bottom-right edge of
the last table cell.
*/
QSize QTable::tableSize() const
{
return QSize( columnPos( numCols() - 1 ) + columnWidth( numCols() - 1 ),
rowPos( numRows() - 1 ) + rowHeight( numRows() - 1 ) );
}
/*!
\property QTable::numRows
\brief The number of rows in the table
\sa numCols
*/
int QTable::numRows() const
{
return leftHeader->count();
}
/*!
\property QTable::numCols
\brief The number of columns in the table
\sa numRows
*/
int QTable::numCols() const
{
return topHeader->count();
}
void QTable::saveContents( QPtrVector<QTableItem> &tmp,
QPtrVector<QTable::TableWidget> &tmp2)
{
int nCols = numCols();
if ( editRow != -1 && editCol != -1 )
endEdit( editRow, editCol, FALSE, edMode != Editing );
tmp.resize( contents.size() );
tmp2.resize( widgets.size() );
int i;
for ( i = 0; i < (int)tmp.size(); ++i ) {
QTableItem *item = contents[ i ];
if ( item && ( item->row() * nCols) + item->col() == i )
tmp.insert( i, item );
else
tmp.insert( i, 0 );
}
for ( i = 0; i < (int)tmp2.size(); ++i ) {
QWidget *w = widgets[ i ];
if ( w )
tmp2.insert( i, new TableWidget( w, i / nCols, i % nCols ) );
else
tmp2.insert( i, 0 );
}
}
void QTable::updateHeaderAndResizeContents( QTableHeader *header,
int num, int rowCol,
int width, bool &updateBefore )
{
updateBefore = rowCol < num;
if ( rowCol > num ) {
header->QHeader::resizeArrays( rowCol );
header->QTableHeader::resizeArrays( rowCol );
int old = num;
clearSelection( FALSE );
int i = 0;
for ( i = old; i < rowCol; ++i )
header->addLabel( QString::null, width );
} else {
clearSelection( FALSE );
if ( header == leftHeader ) {
while ( numRows() > rowCol )
header->removeLabel( numRows() - 1 );
} else {
while ( numCols() > rowCol )
header->removeLabel( numCols() - 1 );
}
}
contents.setAutoDelete( FALSE );
contents.clear();
contents.setAutoDelete( TRUE );
widgets.setAutoDelete( FALSE );
widgets.clear();
widgets.setAutoDelete( TRUE );
resizeData( numRows() * numCols() );
// keep numStretches in sync
int n = 0;
for ( uint i = 0; i < header->stretchable.size(); i++ )
n += ( header->stretchable.at(i) & 1 ); // avoid cmp
header->numStretches = n;
}
void QTable::restoreContents( QPtrVector<QTableItem> &tmp,
QPtrVector<QTable::TableWidget> &tmp2 )
{
int i;
int nCols = numCols();
for ( i = 0; i < (int)tmp.size(); ++i ) {
QTableItem *it = tmp[ i ];
if ( it ) {
int idx = ( it->row() * nCols ) + it->col();
if ( (uint)idx < contents.size() &&
it->row() == idx / nCols && it->col() == idx % nCols ) {
contents.insert( idx, it );
if ( it->rowSpan() > 1 || it->colSpan() > 1 ) {
int ridx, iidx;
for ( int irow = 0; irow < it->rowSpan(); irow++ ) {
ridx = idx + irow * nCols;
for ( int icol = 0; icol < it->colSpan(); icol++ ) {
iidx = ridx + icol;
if ( idx != iidx && (uint)iidx < contents.size() )
contents.insert( iidx, it );
}
}
}
} else {
delete it;
}
}
}
for ( i = 0; i < (int)tmp2.size(); ++i ) {
TableWidget *w = tmp2[ i ];
if ( w ) {
int idx = ( w->row * nCols ) + w->col;
if ( (uint)idx < widgets.size() &&
w->row == idx / nCols && w->col == idx % nCols )
widgets.insert( idx, w->wid );
else
delete w->wid;
delete w;
}
}
}
void QTable::finishContentsResze( bool updateBefore )
{
QRect r( cellGeometry( numRows() - 1, numCols() - 1 ) );
resizeContents( r.right() + 1, r.bottom() + 1 );
updateGeometries();
if ( updateBefore )
repaintContents( contentsX(), contentsY(),
visibleWidth(), visibleHeight(), TRUE );
else
repaintContents( contentsX(), contentsY(),
visibleWidth(), visibleHeight(), FALSE );
if ( isRowSelection( selectionMode() ) ) {
int r = curRow;
curRow = -1;
setCurrentCell( r, curCol );
}
}
void QTable::setNumRows( int r )
{
if ( r < 0 )
return;
if (r < numRows()) {
// Removed rows are no longer hidden, and should thus be removed from "hiddenRows"
for (int rr = numRows()-1; rr >= r; --rr) {
if (d->hiddenRows.find(rr))
d->hiddenRows.remove(rr);
}
}
fontChange(font()); // invalidate the sizeHintCache
QPtrVector<QTableItem> tmp;
QPtrVector<TableWidget> tmp2;
saveContents( tmp, tmp2 );
bool isUpdatesEnabled = leftHeader->isUpdatesEnabled();
leftHeader->setUpdatesEnabled( FALSE );
bool updateBefore;
updateHeaderAndResizeContents( leftHeader, numRows(), r, 20, updateBefore );
int w = fontMetrics().width( QString::number( r ) + "W" );
if ( VERTICALMARGIN > 0 && w > VERTICALMARGIN )
setLeftMargin( w );
restoreContents( tmp, tmp2 );
leftHeader->calculatePositions();
finishContentsResze( updateBefore );
leftHeader->setUpdatesEnabled( isUpdatesEnabled );
if ( isUpdatesEnabled )
leftHeader->update();
leftHeader->updateCache();
if ( curRow >= numRows() ) {
curRow = numRows() - 1;
if ( curRow < 0 )
curCol = -1;
else
repaintCell( curRow, curCol );
}
if ( curRow > numRows() )
curRow = numRows();
}
void QTable::setNumCols( int c )
{
if ( c < 0 )
return;
if (c < numCols()) {
// Removed columns are no longer hidden, and should thus be removed from "hiddenCols"
for (int cc = numCols()-1; cc >= c; --cc) {
if (d->hiddenCols.find(cc))
d->hiddenCols.remove(cc);
}
}
fontChange(font()); // invalidate the sizeHintCache
QPtrVector<QTableItem> tmp;
QPtrVector<TableWidget> tmp2;
saveContents( tmp, tmp2 );
bool isUpdatesEnabled = topHeader->isUpdatesEnabled();
topHeader->setUpdatesEnabled( FALSE );
bool updateBefore;
updateHeaderAndResizeContents( topHeader, numCols(), c, 100, updateBefore );
restoreContents( tmp, tmp2 );
topHeader->calculatePositions();
finishContentsResze( updateBefore );
topHeader->setUpdatesEnabled( isUpdatesEnabled );
if ( isUpdatesEnabled )
topHeader->update();
topHeader->updateCache();
if ( curCol >= numCols() ) {
curCol = numCols() - 1;
if ( curCol < 0 )
curRow = -1;
else
repaintCell( curRow, curCol );
}
}
/*! Sets the section labels of the verticalHeader() to \a labels */
void QTable::setRowLabels( const QStringList &labels )
{
leftHeader->setLabels(labels);
}
/*! Sets the section labels of the horizontalHeader() to \a labels */
void QTable::setColumnLabels( const QStringList &labels )
{
topHeader->setLabels(labels);
}
/*!
This function returns the widget which should be used as an editor
for the contents of the cell at \a row, \a col.
If \a initFromCell is TRUE, the editor is used to edit the current
contents of the cell (so the editor widget should be initialized
with this content). If \a initFromCell is FALSE, the content of
the cell is replaced with the new content which the user entered
into the widget created by this function.
The default functionality is as follows: if \a initFromCell is
TRUE or the cell has a QTableItem and the table item's
QTableItem::isReplaceable() is FALSE then the cell is asked to
create an appropriate editor (using QTableItem::createEditor()).
Otherwise a QLineEdit is used as the editor.
If you want to create your own editor for certain cells, implement
a custom QTableItem subclass and reimplement
QTableItem::createEditor().
If you are not using \l{QTableItem}s and you don't want to use a
QLineEdit as the default editor, subclass QTable and reimplement
this function with code like this:
\code
QTableItem *i = item( row, col );
if ( initFromCell || ( i && !i->isReplaceable() ) )
// If we had a QTableItem ask the base class to create the editor
return QTable::createEditor( row, col, initFromCell );
else
return ...(create your own editor)
\endcode
Ownership of the editor widget is transferred to the caller.
If you reimplement this function return 0 for read-only cells. You
will need to reimplement setCellContentFromEditor() to retrieve
the data the user entered.
\sa QTableItem::createEditor()
*/
QWidget *QTable::createEditor( int row, int col, bool initFromCell ) const
{
if ( isReadOnly() || isRowReadOnly( row ) || isColumnReadOnly( col ) )
return 0;
QWidget *e = 0;
// the current item in the cell should be edited if possible
QTableItem *i = item( row, col );
if ( initFromCell || ( i && !i->isReplaceable() ) ) {
if ( i ) {
if ( i->editType() == QTableItem::Never )
return 0;
e = i->createEditor();
if ( !e )
return 0;
}
}
// no contents in the cell yet, so open the default editor
if ( !e ) {
e = new QLineEdit( viewport(), "qt_lineeditor" );
( (QLineEdit*)e )->setFrame( FALSE );
}
return e;
}
/*!
This function is called to start in-place editing of the cell at
\a row, \a col. Editing is achieved by creating an editor
(createEditor() is called) and setting the cell's editor with
setCellWidget() to the newly created editor. (After editing is
complete endEdit() will be called to replace the cell's content
with the editor's content.) If \a replace is TRUE the editor will
start empty; otherwise it will be initialized with the cell's
content (if any), i.e. the user will be modifying the original
cell content.
\sa endEdit()
*/
QWidget *QTable::beginEdit( int row, int col, bool replace )
{
if ( isReadOnly() || isRowReadOnly( row ) || isColumnReadOnly( col ) )
return 0;
if ( row < 0 || row >= numRows() || col < 0 || col >= numCols() )
return 0;
QTableItem *itm = item( row, col );
if ( itm && !itm->isEnabled() )
return 0;
if ( cellWidget( row, col ) )
return 0;
ensureCellVisible( row, col );
QWidget *e = createEditor( row, col, !replace );
if ( !e )
return 0;
setCellWidget( row, col, e );
e->setActiveWindow();
e->setFocus();
updateCell( row, col );
return e;
}
/*!
This function is called when in-place editing of the cell at \a
row, \a col is requested to stop.
If the cell is not being edited or \a accept is FALSE the function
returns and the cell's contents are left unchanged.
If \a accept is TRUE the content of the editor must be transferred
to the relevant cell. If \a replace is TRUE the current content of
this cell should be replaced by the content of the editor (this
means removing the current QTableItem of the cell and creating a
new one for the cell). Otherwise (if possible) the content of the
editor should just be set to the existing QTableItem of this cell.
setCellContentFromEditor() is called to replace the contents of
the cell with the contents of the cell's editor.
Finally clearCellWidget() is called to remove the editor widget.
\sa setCellContentFromEditor(), beginEdit()
*/
void QTable::endEdit( int row, int col, bool accept, bool replace )
{
QWidget *editor = cellWidget( row, col );
if ( !editor )
return;
if ( !accept ) {
if ( row == editRow && col == editCol )
setEditMode( NotEditing, -1, -1 );
clearCellWidget( row, col );
updateCell( row, col );
viewport()->setFocus();
updateCell( row, col );
return;
}
QTableItem *i = item( row, col );
QString oldContent;
if ( i )
oldContent = i->text();
if ( !i || replace ) {
setCellContentFromEditor( row, col );
i = item( row, col );
} else {
i->setContentFromEditor( editor );
}
if ( row == editRow && col == editCol )
setEditMode( NotEditing, -1, -1 );
viewport()->setFocus();
updateCell( row, col );
if (!i || (oldContent != i->text()))
emit valueChanged( row, col );
clearCellWidget( row, col );
}
/*!
This function is called to replace the contents of the cell at \a
row, \a col with the contents of the cell's editor.
If there already exists a QTableItem for the cell,
it calls QTableItem::setContentFromEditor() on this QTableItem.
If, for example, you want to create different \l{QTableItem}s
depending on the contents of the editor, you might reimplement
this function.
If you want to work without \l{QTableItem}s, you will need to
reimplement this function to save the data the user entered into
your data structure. (See the notes on large tables.)
\sa QTableItem::setContentFromEditor() createEditor()
*/
void QTable::setCellContentFromEditor( int row, int col )
{
QWidget *editor = cellWidget( row, col );
if ( !editor )
return;
QTableItem *i = item( row, col );
if ( i ) {
i->setContentFromEditor( editor );
} else {
QLineEdit *le = ::qt_cast<QLineEdit*>(editor);
if ( le )
setText( row, col, le->text() );
}
}
/*!
Returns TRUE if the \l EditMode is \c Editing or \c Replacing;
otherwise (i.e. the \l EditMode is \c NotEditing) returns FALSE.
\sa QTable::EditMode
*/
bool QTable::isEditing() const
{
return edMode != NotEditing;
}
/*!
Returns the current edit mode
\sa QTable::EditMode
*/
QTable::EditMode QTable::editMode() const
{
return edMode;
}
/*!
Returns the current edited row
*/
int QTable::currEditRow() const
{
return editRow;
}
/*!
Returns the current edited column
*/
int QTable::currEditCol() const
{
return editCol;
}
/*!
Returns a single integer which identifies a particular \a row and \a
col by mapping the 2D table to a 1D array.
This is useful, for example, if you have a sparse table and want to
use a QIntDict to map integers to the cells that are used.
*/
int QTable::indexOf( int row, int col ) const
{
return ( row * numCols() ) + col;
}
/*! \internal
*/
void QTable::repaintSelections( QTableSelection *oldSelection,
QTableSelection *newSelection,
bool updateVertical, bool updateHorizontal )
{
if ( !oldSelection && !newSelection )
return;
if ( oldSelection && newSelection && *oldSelection == *newSelection )
return;
if ( oldSelection && !oldSelection->isActive() )
oldSelection = 0;
bool optimizeOld = FALSE;
bool optimizeNew = FALSE;
QRect old;
if ( oldSelection )
old = rangeGeometry( oldSelection->topRow(),
oldSelection->leftCol(),
oldSelection->bottomRow(),
oldSelection->rightCol(),
optimizeOld );
else
old = QRect( 0, 0, 0, 0 );
QRect cur;
if ( newSelection )
cur = rangeGeometry( newSelection->topRow(),
newSelection->leftCol(),
newSelection->bottomRow(),
newSelection->rightCol(),
optimizeNew );
else
cur = QRect( 0, 0, 0, 0 );
int i;
if ( !optimizeOld || !optimizeNew ||
old.width() > SHRT_MAX || old.height() > SHRT_MAX ||
cur.width() > SHRT_MAX || cur.height() > SHRT_MAX ) {
QRect rr = cur.unite( old );
repaintContents( rr, FALSE );
} else {
old = QRect( contentsToViewport2( old.topLeft() ), old.size() );
cur = QRect( contentsToViewport2( cur.topLeft() ), cur.size() );
QRegion r1( old );
QRegion r2( cur );
QRegion r3 = r1.subtract( r2 );
QRegion r4 = r2.subtract( r1 );
for ( i = 0; i < (int)r3.rects().count(); ++i ) {
QRect r( r3.rects()[ i ] );
r = QRect( viewportToContents2( r.topLeft() ), r.size() );
repaintContents( r, FALSE );
}
for ( i = 0; i < (int)r4.rects().count(); ++i ) {
QRect r( r4.rects()[ i ] );
r = QRect( viewportToContents2( r.topLeft() ), r.size() );
repaintContents( r, FALSE );
}
}
int top, left, bottom, right;
{
int oldTopRow = oldSelection ? oldSelection->topRow() : numRows() - 1;
int newTopRow = newSelection ? newSelection->topRow() : numRows() - 1;
top = QMIN(oldTopRow, newTopRow);
}
{
int oldLeftCol = oldSelection ? oldSelection->leftCol() : numCols() - 1;
int newLeftCol = newSelection ? newSelection->leftCol() : numCols() - 1;
left = QMIN(oldLeftCol, newLeftCol);
}
{
int oldBottomRow = oldSelection ? oldSelection->bottomRow() : 0;
int newBottomRow = newSelection ? newSelection->bottomRow() : 0;
bottom = QMAX(oldBottomRow, newBottomRow);
}
{
int oldRightCol = oldSelection ? oldSelection->rightCol() : 0;
int newRightCol = newSelection ? newSelection->rightCol() : 0;
right = QMAX(oldRightCol, newRightCol);
}
if ( updateHorizontal && numCols() > 0 && left >= 0 && !isRowSelection( selectionMode() ) ) {
register int *s = &topHeader->states.data()[left];
for ( i = left; i <= right; ++i ) {
if ( !isColumnSelected( i ) )
*s = QTableHeader::Normal;
else if ( isColumnSelected( i, TRUE ) )
*s = QTableHeader::Selected;
else
*s = QTableHeader::Bold;
++s;
}
topHeader->repaint( FALSE );
}
if ( updateVertical && numRows() > 0 && top >= 0 ) {
register int *s = &leftHeader->states.data()[top];
for ( i = top; i <= bottom; ++i ) {
if ( !isRowSelected( i ) )
*s = QTableHeader::Normal;
else if ( isRowSelected( i, TRUE ) )
*s = QTableHeader::Selected;
else
*s = QTableHeader::Bold;
++s;
}
leftHeader->repaint( FALSE );
}
}
/*!
Repaints all selections
*/
void QTable::repaintSelections()
{
if ( selections.isEmpty() )
return;
QRect r;
for ( QTableSelection *s = selections.first(); s; s = selections.next() ) {
bool b;
r = r.unite( rangeGeometry( s->topRow(),
s->leftCol(),
s->bottomRow(),
s->rightCol(), b ) );
}
repaintContents( r, FALSE );
}
/*!
Clears all selections and repaints the appropriate regions if \a
repaint is TRUE.
\sa removeSelection()
*/
void QTable::clearSelection( bool repaint )
{
if ( selections.isEmpty() )
return;
bool needRepaint = !selections.isEmpty();
QRect r;
for ( QTableSelection *s = selections.first(); s; s = selections.next() ) {
bool b;
r = r.unite( rangeGeometry( s->topRow(),
s->leftCol(),
s->bottomRow(),
s->rightCol(), b ) );
}
currentSel = 0;
selections.clear();
if ( needRepaint && repaint )
repaintContents( r, FALSE );
leftHeader->setSectionStateToAll( QTableHeader::Normal );
leftHeader->repaint( FALSE );
if ( !isRowSelection( selectionMode() ) ) {
topHeader->setSectionStateToAll( QTableHeader::Normal );
topHeader->repaint( FALSE );
}
topHeader->setSectionState( curCol, QTableHeader::Bold );
leftHeader->setSectionState( curRow, QTableHeader::Bold );
emit selectionChanged();
}
/*! \internal
*/
QRect QTable::rangeGeometry( int topRow, int leftCol,
int bottomRow, int rightCol, bool &optimize )
{
topRow = QMAX( topRow, rowAt( contentsY() ) );
leftCol = QMAX( leftCol, columnAt( contentsX() ) );
int ra = rowAt( contentsY() + visibleHeight() );
if ( ra != -1 )
bottomRow = QMIN( bottomRow, ra );
int ca = columnAt( contentsX() + visibleWidth() );
if ( ca != -1 )
rightCol = QMIN( rightCol, ca );
optimize = TRUE;
QRect rect;
for ( int r = topRow; r <= bottomRow; ++r ) {
for ( int c = leftCol; c <= rightCol; ++c ) {
rect = rect.unite( cellGeometry( r, c ) );
QTableItem *i = item( r, c );
if ( i && ( i->rowSpan() > 1 || i->colSpan() > 1 ) )
optimize = FALSE;
}
}
return rect;
}
/*!
This function is called to activate the next cell if in-place
editing was finished by pressing the Enter key.
The default behaviour is to move from top to bottom, i.e. move to
the cell beneath the cell being edited. Reimplement this function
if you want different behaviour, e.g. moving from left to right.
*/
void QTable::activateNextCell()
{
int firstRow = 0;
while ( d->hiddenRows.find( firstRow ) )
firstRow++;
int firstCol = 0;
while ( d->hiddenCols.find( firstCol ) )
firstCol++;
int nextRow = curRow;
int nextCol = curCol;
while ( d->hiddenRows.find( ++nextRow ) );
if ( nextRow >= numRows() ) {
nextRow = firstRow;
while ( d->hiddenCols.find( ++nextCol ) );
if ( nextCol >= numCols() )
nextCol = firstCol;
}
if ( !currentSel || !currentSel->isActive() ||
( currentSel->leftCol() == currentSel->rightCol() &&
currentSel->topRow() == currentSel->bottomRow() ) ) {
clearSelection();
setCurrentCell( nextRow, nextCol );
} else {
if ( curRow < currentSel->bottomRow() )
setCurrentCell( nextRow, curCol );
else if ( curCol < currentSel->rightCol() )
setCurrentCell( currentSel->topRow(), nextCol );
else
setCurrentCell( currentSel->topRow(), currentSel->leftCol() );
}
}
/*! \internal
*/
void QTable::fixRow( int &row, int y )
{
if ( row == -1 ) {
if ( y < 0 )
row = 0;
else
row = numRows() - 1;
}
}
/*! \internal
*/
void QTable::fixCol( int &col, int x )
{
if ( col == -1 ) {
if ( x < 0 )
col = 0;
else
col = numCols() - 1;
}
}
struct SortableTableItem
{
QTableItem *item;
};
#if defined(Q_C_CALLBACKS)
extern "C" {
#endif
#ifdef Q_OS_TEMP
static int _cdecl cmpTableItems( const void *n1, const void *n2 )
#else
static int cmpTableItems( const void *n1, const void *n2 )
#endif
{
if ( !n1 || !n2 )
return 0;
SortableTableItem *i1 = (SortableTableItem *)n1;
SortableTableItem *i2 = (SortableTableItem *)n2;
return i1->item->key().localeAwareCompare( i2->item->key() );
}
#if defined(Q_C_CALLBACKS)
}
#endif
/*!
Sorts column \a col. If \a ascending is TRUE the sort is in
ascending order, otherwise the sort is in descending order.
If \a wholeRows is TRUE, entire rows are sorted using swapRows();
otherwise only cells in the column are sorted using swapCells().
Note that if you are not using QTableItems you will need to
reimplement swapRows() and swapCells(). (See the notes on large
tables.)
\sa swapRows()
*/
void QTable::sortColumn( int col, bool ascending, bool wholeRows )
{
int filledRows = 0, i;
for ( i = 0; i < numRows(); ++i ) {
QTableItem *itm = item( i, col );
if ( itm )
filledRows++;
}
if ( !filledRows )
return;
SortableTableItem *items = new SortableTableItem[ filledRows ];
int j = 0;
for ( i = 0; i < numRows(); ++i ) {
QTableItem *itm = item( i, col );
if ( !itm )
continue;
items[ j++ ].item = itm;
}
qsort( items, filledRows, sizeof( SortableTableItem ), cmpTableItems );
bool updatesEnabled = isUpdatesEnabled();
setUpdatesEnabled( FALSE );
for ( i = 0; i < numRows(); ++i ) {
if ( i < filledRows ) {
if ( ascending ) {
if ( items[ i ].item->row() == i )
continue;
if ( wholeRows )
swapRows( items[ i ].item->row(), i );
else
swapCells( items[ i ].item->row(), col, i, col );
} else {
if ( items[ i ].item->row() == filledRows - i - 1 )
continue;
if ( wholeRows )
swapRows( items[ i ].item->row(), filledRows - i - 1 );
else
swapCells( items[ i ].item->row(), col,
filledRows - i - 1, col );
}
}
}
setUpdatesEnabled( updatesEnabled );
if ( topHeader )
topHeader->setSortIndicator( col, ascending ? Qt::Ascending : Qt::Descending );
if ( !wholeRows )
repaintContents( columnPos( col ), contentsY(),
columnWidth( col ), visibleHeight(), FALSE );
else
repaintContents( contentsX(), contentsY(),
visibleWidth(), visibleHeight(), FALSE );
delete [] items;
}
/*!
Hides row \a row.
\sa showRow() hideColumn()
*/
void QTable::hideRow( int row )
{
if ( d->hiddenRows.find( row ) )
return;
d->hiddenRows.replace( row, new int( leftHeader->sectionSize( row ) ) );
leftHeader->resizeSection( row, 0 );
leftHeader->setResizeEnabled( FALSE, row );
if ( isRowStretchable(row) )
leftHeader->numStretches--;
rowHeightChanged( row );
if ( curRow == row ) {
int r = curRow;
int c = curCol;
int k = ( r >= numRows() - 1 ? Key_Up : Key_Down );
fixCell( r, c, k );
if ( numRows() > 0 )
setCurrentCell( r, c );
}
}
/*!
Hides column \a col.
\sa showColumn() hideRow()
*/
void QTable::hideColumn( int col )
{
if ( !numCols() || d->hiddenCols.find( col ) )
return;
d->hiddenCols.replace( col, new int( topHeader->sectionSize( col ) ) );
topHeader->resizeSection( col, 0 );
topHeader->setResizeEnabled( FALSE, col );
if ( isColumnStretchable(col) )
topHeader->numStretches--;
columnWidthChanged( col );
if ( curCol == col ) {
int r = curRow;
int c = curCol;
int k = ( c >= numCols() - 1 ? Key_Left : Key_Right );
fixCell( r, c, k );
if ( numCols() > 0 )
setCurrentCell( r, c );
}
}
/*!
Shows row \a row.
\sa hideRow() showColumn()
*/
void QTable::showRow( int row )
{
int *h = d->hiddenRows.find( row );
if ( h ) {
int rh = *h;
d->hiddenRows.remove( row );
setRowHeight( row, rh );
if ( isRowStretchable(row) )
leftHeader->numStretches++;
} else if ( rowHeight( row ) == 0 ) {
setRowHeight( row, 20 );
}
leftHeader->setResizeEnabled( TRUE, row );
}
/*!
Shows column \a col.
\sa hideColumn() showRow()
*/
void QTable::showColumn( int col )
{
int *w = d->hiddenCols.find( col );
if ( w ) {
int cw = *w;
d->hiddenCols.remove( col );
setColumnWidth( col, cw );
if ( isColumnStretchable( col ) )
topHeader->numStretches++;
} else if ( columnWidth( col ) == 0 ) {
setColumnWidth( col, 20 );
}
topHeader->setResizeEnabled( TRUE, col );
}
/*!
Returns TRUE if row \a row is hidden; otherwise returns
FALSE.
\sa hideRow(), isColumnHidden()
*/
bool QTable::isRowHidden( int row ) const
{
return d->hiddenRows.find( row );
}
/*!
Returns TRUE if column \a col is hidden; otherwise returns
FALSE.
\sa hideColumn(), isRowHidden()
*/
bool QTable::isColumnHidden( int col ) const
{
return d->hiddenCols.find( col );
}
/*!
Resizes column \a col to be \a w pixels wide.
\sa columnWidth() setRowHeight()
*/
void QTable::setColumnWidth( int col, int w )
{
int *ow = d->hiddenCols.find( col );
if ( ow ) {
d->hiddenCols.replace( col, new int( w ) );
} else {
topHeader->resizeSection( col, w );
columnWidthChanged( col );
}
}
/*!
Resizes row \a row to be \a h pixels high.
\sa rowHeight() setColumnWidth()
*/
void QTable::setRowHeight( int row, int h )
{
int *oh = d->hiddenRows.find( row );
if ( oh ) {
d->hiddenRows.replace( row, new int( h ) );
} else {
leftHeader->resizeSection( row, h );
rowHeightChanged( row );
}
}
/*!
Resizes column \a col so that the column width is wide enough to
display the widest item the column contains.
\sa adjustRow()
*/
void QTable::adjustColumn( int col )
{
int w;
if ( currentColumn() == col ) {
QFont f = font();
f.setBold(true);
w = topHeader->sectionSizeHint( col, QFontMetrics(f) ).width();
} else {
w = topHeader->sectionSizeHint( col, fontMetrics() ).width();
}
if ( topHeader->iconSet( col ) )
w += topHeader->iconSet( col )->pixmap().width();
w = QMAX( w, 20 );
for ( int i = 0; i < numRows(); ++i ) {
QTableItem *itm = item( i, col );
if ( !itm ) {
QWidget *widget = cellWidget( i, col );
if ( widget )
w = QMAX( w, widget->sizeHint().width() );
} else {
if ( itm->colSpan() > 1 )
w = QMAX( w, itm->sizeHint().width() / itm->colSpan() );
else
w = QMAX( w, itm->sizeHint().width() );
}
}
w = QMAX( w, QApplication::globalStrut().width() );
setColumnWidth( col, w );
}
/*!
Resizes row \a row so that the row height is tall enough to
display the tallest item the row contains.
\sa adjustColumn()
*/
void QTable::adjustRow( int row )
{
int h = 20;
h = QMAX( h, leftHeader->sectionSizeHint( row, leftHeader->fontMetrics() ).height() );
if ( leftHeader->iconSet( row ) )
h = QMAX( h, leftHeader->iconSet( row )->pixmap().height() );
for ( int i = 0; i < numCols(); ++i ) {
QTableItem *itm = item( row, i );
if ( !itm ) {
QWidget *widget = cellWidget( row, i );
if ( widget )
h = QMAX( h, widget->sizeHint().height() );
} else {
if ( itm->rowSpan() > 1 )
h = QMAX( h, itm->sizeHint().height() / itm->rowSpan() );
else
h = QMAX( h, itm->sizeHint().height() );
}
}
h = QMAX( h, QApplication::globalStrut().height() );
setRowHeight( row, h );
}
/*!
If \a stretch is TRUE, column \a col is set to be stretchable;
otherwise column \a col is set to be unstretchable.
If the table widget's width decreases or increases stretchable
columns will grow narrower or wider to fit the space available as
completely as possible. The user cannot manually resize stretchable
columns.
\sa isColumnStretchable() setRowStretchable() adjustColumn()
*/
void QTable::setColumnStretchable( int col, bool stretch )
{
topHeader->setSectionStretchable( col, stretch );
if ( stretch && d->hiddenCols.find(col) )
topHeader->numStretches--;
}
/*!
If \a stretch is TRUE, row \a row is set to be stretchable;
otherwise row \a row is set to be unstretchable.
If the table widget's height decreases or increases stretchable
rows will grow shorter or taller to fit the space available as
completely as possible. The user cannot manually resize
stretchable rows.
\sa isRowStretchable() setColumnStretchable()
*/
void QTable::setRowStretchable( int row, bool stretch )
{
leftHeader->setSectionStretchable( row, stretch );
if ( stretch && d->hiddenRows.find(row) )
leftHeader->numStretches--;
}
/*!
Returns TRUE if column \a col is stretchable; otherwise returns
FALSE.
\sa setColumnStretchable() isRowStretchable()
*/
bool QTable::isColumnStretchable( int col ) const
{
return topHeader->isSectionStretchable( col );
}
/*!
Returns TRUE if row \a row is stretchable; otherwise returns
FALSE.
\sa setRowStretchable() isColumnStretchable()
*/
bool QTable::isRowStretchable( int row ) const
{
return leftHeader->isSectionStretchable( row );
}
/*!
Takes the table item \a i out of the table. This function does \e
not delete the table item. You must either delete the table item
yourself or put it into a table (using setItem()) which will then
take ownership of it.
Use this function if you want to move an item from one cell in a
table to another, or to move an item from one table to another,
reinserting the item with setItem().
If you want to exchange two cells use swapCells().
*/
void QTable::takeItem( QTableItem *i )
{
if ( !i )
return;
QRect rect = cellGeometry( i->row(), i->col() );
contents.setAutoDelete( FALSE );
int bottom = i->row() + i->rowSpan();
if ( bottom > numRows() )
bottom = numRows();
int right = i->col() + i->colSpan();
if ( right > numCols() )
right = numCols();
for ( int r = i->row(); r < bottom; ++r ) {
for ( int c = i->col(); c < right; ++c )
contents.remove( indexOf( r, c ) );
}
contents.setAutoDelete( TRUE );
repaintContents( rect, FALSE );
int orow = i->row();
int ocol = i->col();
i->setRow( -1 );
i->setCol( -1 );
i->updateEditor( orow, ocol );
i->t = 0;
}
/*!
Sets the widget \a e to the cell at \a row, \a col and takes care of
placing and resizing the widget when the cell geometry changes.
By default widgets are inserted into a vector with numRows() *
numCols() elements. In very large tables you will probably want to
store the widgets in a data structure that consumes less memory (see
the notes on large tables). To support the use of your own data
structure this function calls insertWidget() to add the widget to
the internal data structure. To use your own data structure
reimplement insertWidget(), cellWidget() and clearCellWidget().
Cell widgets are created dynamically with the \c new operator. The
cell widgets are destroyed automatically once the table is
destroyed; the table takes ownership of the widget when using
setCellWidget.
*/
void QTable::setCellWidget( int row, int col, QWidget *e )
{
if ( !e || row >= numRows() || col >= numCols() )
return;
QWidget *w = cellWidget( row, col );
if ( w && row == editRow && col == editCol )
endEdit( editRow, editCol, FALSE, edMode != Editing );
e->installEventFilter( this );
clearCellWidget( row, col );
if ( e->parent() != viewport() )
e->reparent( viewport(), QPoint( 0,0 ) );
QTableItem *itm = item(row, col);
if (itm && itm->row() >= 0 && itm->col() >= 0) { // get the correct row and col if the item is spanning
row = itm->row();
col = itm->col();
}
insertWidget( row, col, e );
QRect cr = cellGeometry( row, col );
e->resize( cr.size() );
moveChild( e, cr.x(), cr.y() );
e->show();
}
/*!
Inserts widget \a w at \a row, \a col into the internal
data structure. See the documentation of setCellWidget() for
further details.
If you don't use \l{QTableItem}s you may need to reimplement this
function: see the notes on large tables.
*/
void QTable::insertWidget( int row, int col, QWidget *w )
{
if ( row < 0 || col < 0 || row > numRows() - 1 || col > numCols() - 1 )
return;
if ( (int)widgets.size() != numRows() * numCols() )
widgets.resize( numRows() * numCols() );
widgets.insert( indexOf( row, col ), w );
}
/*!
Returns the widget that has been set for the cell at \a row, \a
col, or 0 if no widget has been set.
If you don't use \l{QTableItem}s you may need to reimplement this
function: see the notes on large tables.
\sa clearCellWidget() setCellWidget()
*/
QWidget *QTable::cellWidget( int row, int col ) const
{
if ( row < 0 || col < 0 || row > numRows() - 1 || col > numCols() - 1 )
return 0;
if ( (int)widgets.size() != numRows() * numCols() )
( (QTable*)this )->widgets.resize( numRows() * numCols() );
return widgets[ indexOf( row, col ) ];
}
/*!
Removes the widget (if there is one) set for the cell at \a row,
\a col.
If you don't use \l{QTableItem}s you may need to reimplement this
function: see the notes on large tables.
This function deletes the widget at \a row, \a col. Note that the
widget is not deleted immediately; instead QObject::deleteLater()
is called on the widget to avoid problems with timing issues.
\sa cellWidget() setCellWidget()
*/
void QTable::clearCellWidget( int row, int col )
{
if ( row < 0 || col < 0 || row > numRows() - 1 || col > numCols() - 1 )
return;
if ( (int)widgets.size() != numRows() * numCols() )
widgets.resize( numRows() * numCols() );
QWidget *w = cellWidget( row, col );
if ( w ) {
w->removeEventFilter( this );
w->deleteLater();
}
widgets.setAutoDelete( FALSE );
widgets.remove( indexOf( row, col ) );
widgets.setAutoDelete( TRUE );
}
/*!
\fn void QTable::dropped ( QDropEvent * e )
This signal is emitted when a drop event occurred on the table.
\a e contains information about the drop.
*/
/*!
If \a b is TRUE, the table starts a drag (see dragObject()) when
the user presses and moves the mouse on a selected cell.
*/
void QTable::setDragEnabled( bool b )
{
dEnabled = b;
}
/*!
If this function returns TRUE, the table supports dragging.
\sa setDragEnabled();
*/
bool QTable::dragEnabled() const
{
return dEnabled;
}
/*!
Inserts \a count empty rows at row \a row. Also clears the selection(s).
\sa insertColumns() removeRow()
*/
void QTable::insertRows( int row, int count )
{
// special case, so a call like insertRow( currentRow(), 1 ) also
// works, when we have 0 rows and currentRow() is -1
if ( row == -1 && curRow == -1 )
row = 0;
if ( row < 0 || count <= 0 )
return;
if ( curRow >= row && curRow < row + count )
curRow = row + count;
--row;
if ( row >= numRows() )
return;
bool updatesEnabled = isUpdatesEnabled();
setUpdatesEnabled( FALSE );
bool leftHeaderUpdatesEnabled = leftHeader->isUpdatesEnabled();
leftHeader->setUpdatesEnabled( FALSE );
int oldLeftMargin = leftMargin();
setNumRows( numRows() + count );
for ( int i = numRows() - count - 1; i > row; --i )
leftHeader->swapSections( i, i + count );
leftHeader->setUpdatesEnabled( leftHeaderUpdatesEnabled );
setUpdatesEnabled( updatesEnabled );
int cr = QMAX( 0, currentRow() );
int cc = QMAX( 0, currentColumn() );
if ( curRow > row )
curRow -= count; // this is where curRow was
setCurrentCell( cr, cc, TRUE, FALSE ); // without ensureCellVisible
// Repaint the header
if ( leftHeaderUpdatesEnabled ) {
int y = rowPos( row ) - contentsY();
if ( leftMargin() != oldLeftMargin || d->hasRowSpan )
y = 0; // full repaint
QRect rect( 0, y, leftHeader->width(), contentsHeight() );
leftHeader->update( rect );
}
if ( updatesEnabled ) {
int p = rowPos( row );
if ( d->hasRowSpan )
p = contentsY();
updateContents( contentsX(), p, visibleWidth(), contentsHeight() + 1 );
}
}
/*!
Inserts \a count empty columns at column \a col. Also clears the selection(s).
\sa insertRows() removeColumn()
*/
void QTable::insertColumns( int col, int count )
{
// see comment in insertRows()
if ( col == -1 && curCol == -1 )
col = 0;
if ( col < 0 || count <= 0 )
return;
if ( curCol >= col && curCol < col + count )
curCol = col + count;
--col;
if ( col >= numCols() )
return;
bool updatesEnabled = isUpdatesEnabled();
setUpdatesEnabled( FALSE );
bool topHeaderUpdatesEnabled = topHeader->isUpdatesEnabled();
topHeader->setUpdatesEnabled( FALSE );
int oldTopMargin = topMargin();
setNumCols( numCols() + count );
for ( int i = numCols() - count - 1; i > col; --i )
topHeader->swapSections( i, i + count );
topHeader->setUpdatesEnabled( topHeaderUpdatesEnabled );
setUpdatesEnabled( updatesEnabled );
int cr = QMAX( 0, currentRow() );
int cc = QMAX( 0, currentColumn() );
if ( curCol > col )
curCol -= count; // this is where curCol was
setCurrentCell( cr, cc, TRUE, FALSE ); // without ensureCellVisible
// Repaint the header
if ( topHeaderUpdatesEnabled ) {
int x = columnPos( col ) - contentsX();
if ( topMargin() != oldTopMargin || d->hasColSpan )
x = 0; // full repaint
QRect rect( x, 0, contentsWidth(), topHeader->height() );
topHeader->update( rect );
}
if ( updatesEnabled ) {
int p = columnPos( col );
if ( d->hasColSpan )
p = contentsX();
updateContents( p, contentsY(), contentsWidth() + 1, visibleHeight() );
}
}
/*!
Removes row \a row, and deletes all its cells including any table
items and widgets the cells may contain. Also clears the selection(s).
\sa hideRow() insertRows() removeColumn() removeRows()
*/
void QTable::removeRow( int row )
{
if ( row < 0 || row >= numRows() )
return;
if ( row < numRows() - 1 ) {
if (d->hiddenRows.find(row))
d->hiddenRows.remove(row);
for ( int i = row; i < numRows() - 1; ++i )
( (QTableHeader*)verticalHeader() )->swapSections( i, i + 1 );
}
setNumRows( numRows() - 1 );
}
/*!
Removes the rows listed in the array \a rows, and deletes all their
cells including any table items and widgets the cells may contain.
The array passed in must only contain valid rows (in the range
from 0 to numRows() - 1) with no duplicates, and must be sorted in
ascending order. Also clears the selection(s).
\sa removeRow() insertRows() removeColumns()
*/
void QTable::removeRows( const QMemArray<int> &rows )
{
if ( rows.count() == 0 )
return;
int i;
for ( i = 0; i < (int)rows.count() - 1; ++i ) {
for ( int j = rows[i] - i; j < rows[i + 1] - i - 1; j++ ) {
( (QTableHeader*)verticalHeader() )->swapSections( j, j + i + 1 );
}
}
for ( int j = rows[i] - i; j < numRows() - (int)rows.size(); j++)
( (QTableHeader*)verticalHeader() )->swapSections( j, j + rows.count() );
setNumRows( numRows() - rows.count() );
}
/*!
Removes column \a col, and deletes all its cells including any
table items and widgets the cells may contain. Also clears the
selection(s).
\sa removeColumns() hideColumn() insertColumns() removeRow()
*/
void QTable::removeColumn( int col )
{
if ( col < 0 || col >= numCols() )
return;
if ( col < numCols() - 1 ) {
if (d->hiddenCols.find(col))
d->hiddenCols.remove(col);
for ( int i = col; i < numCols() - 1; ++i )
( (QTableHeader*)horizontalHeader() )->swapSections( i, i + 1 );
}
setNumCols( numCols() - 1 );
}
/*!
Removes the columns listed in the array \a cols, and deletes all
their cells including any table items and widgets the cells may
contain.
The array passed in must only contain valid columns (in the range
from 0 to numCols() - 1) with no duplicates, and must be sorted in
ascending order. Also clears the selection(s).
\sa removeColumn() insertColumns() removeRows()
*/
void QTable::removeColumns( const QMemArray<int> &cols )
{
if ( cols.count() == 0 )
return;
int i;
for ( i = 0; i < (int)cols.count() - 1; ++i ) {
for ( int j = cols[i] - i; j < cols[i + 1] - i - 1; j++ ) {
( (QTableHeader*)horizontalHeader() )->swapSections( j, j + i + 1 );
}
}
for ( int j = cols[i] - i; j < numCols() - (int)cols.size(); j++)
( (QTableHeader*)horizontalHeader() )->swapSections( j, j + cols.count() );
setNumCols( numCols() - cols.count() );
}
/*!
Starts editing the cell at \a row, \a col.
If \a replace is TRUE the content of this cell will be replaced by
the content of the editor when editing is finished, i.e. the user
will be entering new data; otherwise the current content of the
cell (if any) will be modified in the editor.
\sa beginEdit()
*/
void QTable::editCell( int row, int col, bool replace )
{
if ( row < 0 || col < 0 || row > numRows() - 1 || col > numCols() - 1 )
return;
if ( beginEdit( row, col, replace ) ) {
edMode = Editing;
editRow = row;
editCol = col;
}
}
#ifndef QT_NO_DRAGANDDROP
/*!
This event handler is called whenever a QTable object receives a
\l QDragEnterEvent \a e, i.e. when the user pressed the mouse
button to drag something.
The focus is moved to the cell where the QDragEnterEvent occurred.
*/
void QTable::contentsDragEnterEvent( QDragEnterEvent *e )
{
oldCurrentRow = curRow;
oldCurrentCol = curCol;
int tmpRow = rowAt( e->pos().y() );
int tmpCol = columnAt( e->pos().x() );
fixRow( tmpRow, e->pos().y() );
fixCol( tmpCol, e->pos().x() );
if (e->source() != (QObject*)cellWidget( currentRow(), currentColumn() ) )
setCurrentCell( tmpRow, tmpCol, FALSE, TRUE );
e->accept();
}
/*!
This event handler is called whenever a QTable object receives a
\l QDragMoveEvent \a e, i.e. when the user actually drags the
mouse.
The focus is moved to the cell where the QDragMoveEvent occurred.
*/
void QTable::contentsDragMoveEvent( QDragMoveEvent *e )
{
int tmpRow = rowAt( e->pos().y() );
int tmpCol = columnAt( e->pos().x() );
fixRow( tmpRow, e->pos().y() );
fixCol( tmpCol, e->pos().x() );
if (e->source() != (QObject*)cellWidget( currentRow(), currentColumn() ) )
setCurrentCell( tmpRow, tmpCol, FALSE, TRUE );
e->accept();
}
/*!
This event handler is called when a drag activity leaves \e this
QTable object with event \a e.
*/
void QTable::contentsDragLeaveEvent( QDragLeaveEvent * )
{
setCurrentCell( oldCurrentRow, oldCurrentCol, FALSE, TRUE );
}
/*!
This event handler is called when the user ends a drag and drop by
dropping something onto \e this QTable and thus triggers the drop
event, \a e.
*/
void QTable::contentsDropEvent( QDropEvent *e )
{
setCurrentCell( oldCurrentRow, oldCurrentCol, FALSE, TRUE );
emit dropped( e );
}
/*!
If the user presses the mouse on a selected cell, starts moving
(i.e. dragging), and dragEnabled() is TRUE, this function is
called to obtain a drag object. A drag using this object begins
immediately unless dragObject() returns 0.
By default this function returns 0. You might reimplement it and
create a QDragObject depending on the selected items.
\sa dropped()
*/
QDragObject *QTable::dragObject()
{
return 0;
}
/*!
Starts a drag.
Usually you don't need to call or reimplement this function yourself.
\sa dragObject();
*/
void QTable::startDrag()
{
if ( startDragRow == -1 || startDragCol == -1 )
return;
startDragRow = startDragCol = -1;
QDragObject *drag = dragObject();
if ( !drag )
return;
drag->drag();
}
#endif
/*! \reimp */
void QTable::windowActivationChange( bool oldActive )
{
if ( oldActive && autoScrollTimer )
autoScrollTimer->stop();
if ( !isVisible() )
return;
if ( palette().active() != palette().inactive() )
updateContents();
}
/*! \reimp */
void QTable::setEnabled( bool b )
{
if ( !b ) {
// editor will lose focus, causing a crash deep in setEnabled(),
// so we'll end the edit early.
endEdit( editRow, editCol, TRUE, edMode != Editing );
}
QScrollView::setEnabled(b);
}
/*
\class QTableHeader
\brief The QTableHeader class allows for creation and manipulation
of table headers.
\if defined(commercial)
It is part of the <a href="commercialeditions.html">Qt Enterprise Edition</a>.
\endif
\ingroup advanced
\module table
QTable uses this subclass of QHeader for its headers. QTable has a
horizontalHeader() for displaying column labels, and a
verticalHeader() for displaying row labels.
*/
/*
\enum QTableHeader::SectionState
This enum type denotes the state of the header's text
\value Normal the default
\value Bold
\value Selected typically represented by showing the section "sunken"
or "pressed in"
*/
/*!
Creates a new table header called \a name with \a i sections. It
is a child of widget \a parent and attached to table \a t.
*/
QTableHeader::QTableHeader( int i, QTable *t,
QWidget *parent, const char *name )
: QHeader( i, parent, name ), mousePressed(FALSE), startPos(-1),
table( t ), caching( FALSE ), resizedSection(-1),
numStretches( 0 )
{
setIsATableHeader( TRUE );
d = 0;
states.resize( i );
stretchable.resize( i );
states.fill( Normal, -1 );
stretchable.fill( FALSE, -1 );
autoScrollTimer = new QTimer( this );
connect( autoScrollTimer, SIGNAL( timeout() ),
this, SLOT( doAutoScroll() ) );
#ifndef NO_LINE_WIDGET
line1 = new QWidget( table->viewport(), "qt_line1" );
line1->hide();
line1->setBackgroundMode( PaletteText );
table->addChild( line1 );
line2 = new QWidget( table->viewport(), "qt_line2" );
line2->hide();
line2->setBackgroundMode( PaletteText );
table->addChild( line2 );
#else
d = new QTableHeaderPrivate;
d->oldLinePos = -1; //outside, in contents coords
#endif
connect( this, SIGNAL( sizeChange(int,int,int) ),
this, SLOT( sectionWidthChanged(int,int,int) ) );
connect( this, SIGNAL( indexChange(int,int,int) ),
this, SLOT( indexChanged(int,int,int) ) );
stretchTimer = new QTimer( this );
widgetStretchTimer = new QTimer( this );
connect( stretchTimer, SIGNAL( timeout() ),
this, SLOT( updateStretches() ) );
connect( widgetStretchTimer, SIGNAL( timeout() ),
this, SLOT( updateWidgetStretches() ) );
startPos = -1;
}
/*!
Adds a new section, \a size pixels wide (or high for vertical
headers) with the label \a s. If \a size is negative the section's
size is calculated based on the width (or height) of the label's
text.
*/
void QTableHeader::addLabel( const QString &s , int size )
{
QHeader::addLabel( s, size );
if ( count() > (int)states.size() ) {
int s = states.size();
states.resize( count() );
stretchable.resize( count() );
for ( ; s < count(); ++s ) {
states[ s ] = Normal;
stretchable[ s ] = FALSE;
}
}
}
void QTableHeader::removeLabel( int section )
{
QHeader::removeLabel( section );
if ( section == (int)states.size() - 1 ) {
states.resize( states.size() - 1 );
stretchable.resize( stretchable.size() - 1 );
}
}
void QTableHeader::resizeArrays( int n )
{
int old = states.size();
states.resize( n );
stretchable.resize( n );
if ( n > old ) {
for ( int i = old; i < n; ++i ) {
stretchable[ i ] = FALSE;
states[ i ] = Normal;
}
}
}
void QTableHeader::setLabel( int section, const QString & s, int size )
{
QHeader::setLabel( section, s, size );
sectionLabelChanged( section );
}
void QTableHeader::setLabel( int section, const QIconSet & iconset,
const QString & s, int size )
{
QHeader::setLabel( section, iconset, s, size );
sectionLabelChanged( section );
}
/*!
Sets the SectionState of section \a s to \a astate.
\sa sectionState()
*/
void QTableHeader::setSectionState( int s, SectionState astate )
{
if ( s < 0 || s >= (int)states.count() )
return;
if ( states.data()[ s ] == astate )
return;
if ( isRowSelection( table->selectionMode() ) && orientation() == Horizontal )
return;
states.data()[ s ] = astate;
if ( isUpdatesEnabled() ) {
if ( orientation() == Horizontal )
repaint( sectionPos( s ) - offset(), 0, sectionSize( s ), height(), FALSE );
else
repaint( 0, sectionPos( s ) - offset(), width(), sectionSize( s ), FALSE );
}
}
void QTableHeader::setSectionStateToAll( SectionState state )
{
if ( isRowSelection( table->selectionMode() ) && orientation() == Horizontal )
return;
register int *d = (int *) states.data();
int n = count();
while (n >= 4) {
d[0] = state;
d[1] = state;
d[2] = state;
d[3] = state;
d += 4;
n -= 4;
}
if (n > 0) {
d[0] = state;
if (n > 1) {
d[1] = state;
if (n > 2) {
d[2] = state;
}
}
}
}
/*!
Returns the SectionState of section \a s.
\sa setSectionState()
*/
QTableHeader::SectionState QTableHeader::sectionState( int s ) const
{
return (s < 0 || s >= (int)states.count() ? Normal : (QTableHeader::SectionState)states[s]);
}
/*! \reimp
*/
void QTableHeader::paintEvent( QPaintEvent *e )
{
QPainter p( this );
p.setPen( colorGroup().buttonText() );
int pos = orientation() == Horizontal
? e->rect().left()
: e->rect().top();
int id = mapToIndex( sectionAt( pos + offset() ) );
if ( id < 0 ) {
if ( pos > 0 )
return;
else
id = 0;
}
QRegion reg = e->region();
for ( int i = id; i < count(); i++ ) {
QRect r = sRect( i );
reg -= r;
p.save();
if ( !( orientation() == Horizontal && isRowSelection( table->selectionMode() ) ) &&
( sectionState( i ) == Bold || sectionState( i ) == Selected ) ) {
QFont f( font() );
f.setBold( TRUE );
p.setFont( f );
}
paintSection( &p, i, r );
p.restore();
if ( ( orientation() == Horizontal && r. right() >= e->rect().right() ) ||
( orientation() == Vertical && r. bottom() >= e->rect().bottom() ) )
return;
}
if ( !reg.isEmpty() )
erase( reg );
}
/*!
\reimp
Paints the header section with index \a index into the rectangular
region \a fr on the painter \a p.
*/
void QTableHeader::paintSection( QPainter *p, int index, const QRect& fr )
{
int section = mapToSection( index );
if ( section < 0 || cellSize( section ) <= 0 )
return;
if ( sectionState( index ) != Selected ||
( orientation() == Horizontal && isRowSelection( table->selectionMode() ) ) ) {
QHeader::paintSection( p, index, fr );
} else {
QStyle::SFlags flags = QStyle::Style_Off | ( orient == Horizontal ? QStyle::Style_Horizontal : 0 );
if(isEnabled())
flags |= QStyle::Style_Enabled;
if(isClickEnabled()) {
if(sectionState(index) == Selected) {
flags |= QStyle::Style_Down;
if(!mousePressed)
flags |= QStyle::Style_Sunken;
}
}
if(!(flags & QStyle::Style_Down))
flags |= QStyle::Style_Raised;
style().drawPrimitive( QStyle::PE_HeaderSection, p, QRect(fr.x(), fr.y(), fr.width(), fr.height()),
colorGroup(), flags );
paintSectionLabel( p, index, fr );
}
}
static int real_pos( const QPoint &p, Qt::Orientation o )
{
if ( o == Qt::Horizontal )
return p.x();
return p.y();
}
/*! \reimp
*/
void QTableHeader::mousePressEvent( QMouseEvent *e )
{
if ( e->button() != LeftButton )
return;
QHeader::mousePressEvent( e );
mousePressed = TRUE;
pressPos = real_pos( e->pos(), orientation() );
if ( !table->currentSel || ( e->state() & ShiftButton ) != ShiftButton )
startPos = -1;
setCaching( TRUE );
resizedSection = -1;
#ifdef QT_NO_CURSOR
isResizing = FALSE;
#else
isResizing = cursor().shape() != ArrowCursor;
if ( !isResizing && sectionAt( pressPos ) != -1 )
doSelection( e );
#endif
}
/*! \reimp
*/
void QTableHeader::mouseMoveEvent( QMouseEvent *e )
{
if ( (e->state() & MouseButtonMask) != LeftButton // Using LeftButton simulates old behavior.
#ifndef QT_NO_CURSOR
|| cursor().shape() != ArrowCursor
#endif
|| ( ( e->state() & ControlButton ) == ControlButton &&
( orientation() == Horizontal
? table->columnMovingEnabled() : table->rowMovingEnabled() ) ) ) {
QHeader::mouseMoveEvent( e );
return;
}
if ( !doSelection( e ) )
QHeader::mouseMoveEvent( e );
}
bool QTableHeader::doSelection( QMouseEvent *e )
{
int p = real_pos( e->pos(), orientation() ) + offset();
if ( isRowSelection( table->selectionMode() ) ) {
if ( orientation() == Horizontal )
return TRUE;
if ( table->selectionMode() == QTable::SingleRow ) {
int secAt = sectionAt( p );
if ( secAt == -1 )
return TRUE;
table->setCurrentCell( secAt, table->currentColumn() );
return TRUE;
}
}
if ( startPos == -1 ) {
int secAt = sectionAt( p );
if ( ( ( e->state() & ControlButton ) != ControlButton &&
( e->state() & ShiftButton ) != ShiftButton ) ||
table->selectionMode() == QTable::Single ||
table->selectionMode() == QTable::SingleRow ) {
startPos = p;
bool b = table->signalsBlocked();
table->blockSignals( TRUE );
table->clearSelection();
table->blockSignals( b );
}
saveStates();
if ( table->selectionMode() != QTable::NoSelection ) {
startPos = p;
QTableSelection *oldSelection = table->currentSel;
if ( orientation() == Vertical ) {
if ( !table->isRowSelected( secAt, TRUE ) ) {
table->currentSel = new QTableSelection();
table->selections.append( table->currentSel );
table->currentSel->init( secAt, 0 );
table->currentSel->expandTo( secAt, table->numCols() - 1 );
emit table->selectionChanged();
}
table->setCurrentCell( secAt, 0 );
} else { // orientation == Horizontal
if ( !table->isColumnSelected( secAt, TRUE ) ) {
table->currentSel = new QTableSelection();
table->selections.append( table->currentSel );
table->currentSel->init( 0, secAt );
table->currentSel->expandTo( table->numRows() - 1, secAt );
emit table->selectionChanged();
}
table->setCurrentCell( 0, secAt );
}
if ( ( orientation() == Horizontal && table->isColumnSelected(secAt) ) ||
( orientation() == Vertical && table->isRowSelected(secAt) ) ) {
setSectionState( secAt, Selected );
}
table->repaintSelections( oldSelection, table->currentSel,
orientation() == Horizontal,
orientation() == Vertical );
if ( sectionAt( p ) != -1 )
endPos = p;
return TRUE;
}
}
if ( sectionAt( p ) != -1 )
endPos = p;
if ( startPos != -1 ) {
updateSelections();
p -= offset();
if ( orientation() == Horizontal && ( p < 0 || p > width() ) ) {
doAutoScroll();
autoScrollTimer->start( 100, TRUE );
} else if ( orientation() == Vertical && ( p < 0 || p > height() ) ) {
doAutoScroll();
autoScrollTimer->start( 100, TRUE );
}
return TRUE;
}
return table->selectionMode() == QTable::NoSelection;
}
static inline bool mayOverwriteMargin( int before, int after )
{
/*
0 is the only user value that we always respect. We also never
shrink a margin, in case the user wanted it that way.
*/
return before != 0 && before < after;
}
void QTableHeader::sectionLabelChanged( int section )
{
emit sectionSizeChanged( section );
// this does not really belong here
if ( orientation() == Horizontal ) {
int h = sizeHint().height();
if ( h != height() && mayOverwriteMargin(table->topMargin(), h) )
table->setTopMargin( h );
} else {
int w = sizeHint().width();
if ( w != width() && mayOverwriteMargin( ( QApplication::reverseLayout() ? table->rightMargin() : table->leftMargin() ), w) )
table->setLeftMargin( w );
}
}
/*! \reimp */
void QTableHeader::mouseReleaseEvent( QMouseEvent *e )
{
if ( e->button() != LeftButton )
return;
autoScrollTimer->stop();
mousePressed = FALSE;
setCaching( FALSE );
QHeader::mouseReleaseEvent( e );
#ifndef NO_LINE_WIDGET
line1->hide();
line2->hide();
#else
if ( d->oldLinePos >= 0 )
if ( orientation() == Horizontal )
table->updateContents( d->oldLinePos, table->contentsY(),
1, table->visibleHeight() );
else
table->updateContents( table->contentsX(), d->oldLinePos,
table->visibleWidth(), 1 );
d->oldLinePos = -1;
#endif
if ( resizedSection != -1 ) {
emit sectionSizeChanged( resizedSection );
updateStretches();
}
//Make sure all newly selected sections are painted one last time
QRect selectedRects;
for ( int i = 0; i < count(); i++ ) {
if(sectionState( i ) == Selected)
selectedRects |= sRect( i );
}
if(!selectedRects.isNull())
repaint(selectedRects);
}
/*! \reimp
*/
void QTableHeader::mouseDoubleClickEvent( QMouseEvent *e )
{
if ( e->button() != LeftButton )
return;
if ( isResizing ) {
int p = real_pos( e->pos(), orientation() ) + offset();
int section = sectionAt( p );
if ( section == -1 )
return;
section--;
if ( p >= sectionPos( count() - 1 ) + sectionSize( count() - 1 ) )
++section;
while ( sectionSize( section ) == 0 )
section--;
if ( section < 0 )
return;
int oldSize = sectionSize( section );
if ( orientation() == Horizontal ) {
table->adjustColumn( section );
int newSize = sectionSize( section );
if ( oldSize != newSize )
emit sizeChange( section, oldSize, newSize );
for ( int i = 0; i < table->numCols(); ++i ) {
if ( table->isColumnSelected( i ) && sectionSize( i ) != 0 )
table->adjustColumn( i );
}
} else {
table->adjustRow( section );
int newSize = sectionSize( section );
if ( oldSize != newSize )
emit sizeChange( section, oldSize, newSize );
for ( int i = 0; i < table->numRows(); ++i ) {
if ( table->isRowSelected( i ) && sectionSize( i ) != 0 )
table->adjustRow( i );
}
}
}
}
/*! \reimp
*/
void QTableHeader::resizeEvent( QResizeEvent *e )
{
stretchTimer->stop();
widgetStretchTimer->stop();
QHeader::resizeEvent( e );
if ( numStretches == 0 )
return;
stretchTimer->start( 0, TRUE );
}
void QTableHeader::updateStretches()
{
if ( numStretches == 0 )
return;
int dim = orientation() == Horizontal ? width() : height();
if ( sectionPos(count() - 1) + sectionSize(count() - 1) == dim )
return;
int i;
int pd = dim - ( sectionPos(count() - 1)
+ sectionSize(count() - 1) );
bool block = signalsBlocked();
blockSignals( TRUE );
for ( i = 0; i < (int)stretchable.count(); ++i ) {
if ( !stretchable[i] ||
( stretchable[i] && table->d->hiddenCols[i] ) )
continue;
pd += sectionSize( i );
}
pd /= numStretches;
for ( i = 0; i < (int)stretchable.count(); ++i ) {
if ( !stretchable[i] ||
( stretchable[i] && table->d->hiddenCols[i] ) )
continue;
if ( i == (int)stretchable.count() - 1 &&
sectionPos( i ) + pd < dim )
pd = dim - sectionPos( i );
resizeSection( i, QMAX( 20, pd ) );
}
blockSignals( block );
table->repaintContents( FALSE );
widgetStretchTimer->start( 100, TRUE );
}
void QTableHeader::updateWidgetStretches()
{
QSize s = table->tableSize();
table->resizeContents( s.width(), s.height() );
for ( int i = 0; i < table->numCols(); ++i )
table->updateColWidgets( i );
}
void QTableHeader::updateSelections()
{
if ( table->selectionMode() == QTable::NoSelection ||
(isRowSelection( table->selectionMode() ) && orientation() != Vertical ) )
return;
int a = sectionAt( startPos );
int b = sectionAt( endPos );
int start = QMIN( a, b );
int end = QMAX( a, b );
register int *s = states.data();
for ( int i = 0; i < count(); ++i ) {
if ( i < start || i > end )
*s = oldStates.data()[ i ];
else
*s = Selected;
++s;
}
repaint( FALSE );
if (table->currentSel) {
QTableSelection oldSelection = *table->currentSel;
if ( orientation() == Vertical )
table->currentSel->expandTo( b, table->horizontalHeader()->count() - 1 );
else
table->currentSel->expandTo( table->verticalHeader()->count() - 1, b );
table->repaintSelections( &oldSelection, table->currentSel,
orientation() == Horizontal,
orientation() == Vertical );
}
emit table->selectionChanged();
}
void QTableHeader::saveStates()
{
oldStates.resize( count() );
register int *s = states.data();
register int *s2 = oldStates.data();
for ( int i = 0; i < count(); ++i ) {
*s2 = *s;
++s2;
++s;
}
}
void QTableHeader::doAutoScroll()
{
QPoint pos = mapFromGlobal( QCursor::pos() );
int p = real_pos( pos, orientation() ) + offset();
if ( sectionAt( p ) != -1 )
endPos = p;
if ( orientation() == Horizontal )
table->ensureVisible( endPos, table->contentsY() );
else
table->ensureVisible( table->contentsX(), endPos );
updateSelections();
autoScrollTimer->start( 100, TRUE );
}
void QTableHeader::sectionWidthChanged( int col, int, int )
{
resizedSection = col;
if ( orientation() == Horizontal ) {
#ifndef NO_LINE_WIDGET
table->moveChild( line1, QHeader::sectionPos( col ) - 1,
table->contentsY() );
line1->resize( 1, table->visibleHeight() );
line1->show();
line1->raise();
table->moveChild( line2,
QHeader::sectionPos( col ) + QHeader::sectionSize( col ) - 1,
table->contentsY() );
line2->resize( 1, table->visibleHeight() );
line2->show();
line2->raise();
#else
QPainter p( table->viewport() );
int lx = QHeader::sectionPos( col ) + QHeader::sectionSize( col ) - 1;
int ly = table->contentsY();
if ( lx != d->oldLinePos ) {
QPoint pt = table->contentsToViewport( QPoint( lx, ly ) );
p.drawLine( pt.x(), pt.y()+1,
pt.x(), pt.y()+ table->visibleHeight() );
if ( d->oldLinePos >= 0 )
table->repaintContents( d->oldLinePos, table->contentsY(),
1, table->visibleHeight() );
d->oldLinePos = lx;
}
#endif
} else {
#ifndef NO_LINE_WIDGET
table->moveChild( line1, table->contentsX(),
QHeader::sectionPos( col ) - 1 );
line1->resize( table->visibleWidth(), 1 );
line1->show();
line1->raise();
table->moveChild( line2, table->contentsX(),
QHeader::sectionPos( col ) + QHeader::sectionSize( col ) - 1 );
line2->resize( table->visibleWidth(), 1 );
line2->show();
line2->raise();
#else
QPainter p( table->viewport() );
int lx = table->contentsX();
int ly = QHeader::sectionPos( col ) + QHeader::sectionSize( col ) - 1;
if ( ly != d->oldLinePos ) {
QPoint pt = table->contentsToViewport( QPoint( lx, ly ) );
p.drawLine( pt.x()+1, pt.y(),
pt.x() + table->visibleWidth(), pt.y() );
if ( d->oldLinePos >= 0 )
table->repaintContents( table->contentsX(), d->oldLinePos,
table->visibleWidth(), 1 );
d->oldLinePos = ly;
}
#endif
}
}
/*!
\reimp
Returns the size of section \a section in pixels or -1 if \a
section is out of range.
*/
int QTableHeader::sectionSize( int section ) const
{
if ( count() <= 0 || section < 0 || section >= count() )
return -1;
if ( caching && section < (int)sectionSizes.count() )
return sectionSizes[ section ];
return QHeader::sectionSize( section );
}
/*!
\reimp
Returns the start position of section \a section in pixels or -1
if \a section is out of range.
\sa sectionAt()
*/
int QTableHeader::sectionPos( int section ) const
{
if ( count() <= 0 || section < 0 || section >= count() )
return -1;
if ( caching && section < (int)sectionPoses.count() )
return sectionPoses[ section ];
return QHeader::sectionPos( section );
}
/*!
\reimp
Returns the number of the section at index position \a pos or -1
if there is no section at the position given.
\sa sectionPos()
*/
int QTableHeader::sectionAt( int pos ) const
{
if ( !caching || sectionSizes.count() <= 0 || sectionPoses.count() <= 0 )
return QHeader::sectionAt( pos );
if ( count() <= 0 || pos > sectionPoses[ count() - 1 ] + sectionSizes[ count() - 1 ] )
return -1;
int l = 0;
int r = count() - 1;
int i = ( (l+r+1) / 2 );
while ( r - l ) {
if ( sectionPoses[i] > pos )
r = i -1;
else
l = i;
i = ( (l+r+1) / 2 );
}
if ( sectionPoses[i] <= pos &&
pos <= sectionPoses[i] + sectionSizes[ mapToSection( i ) ] )
return mapToSection( i );
return -1;
}
void QTableHeader::updateCache()
{
sectionPoses.resize( count() );
sectionSizes.resize( count() );
if ( !caching )
return;
for ( int i = 0; i < count(); ++i ) {
sectionSizes[ i ] = QHeader::sectionSize( i );
sectionPoses[ i ] = QHeader::sectionPos( i );
}
}
void QTableHeader::setCaching( bool b )
{
if ( caching == b )
return;
caching = b;
sectionPoses.resize( count() );
sectionSizes.resize( count() );
if ( b ) {
for ( int i = 0; i < count(); ++i ) {
sectionSizes[ i ] = QHeader::sectionSize( i );
sectionPoses[ i ] = QHeader::sectionPos( i );
}
}
}
/*!
If \a b is TRUE, section \a s is stretchable; otherwise the
section is not stretchable.
\sa isSectionStretchable()
*/
void QTableHeader::setSectionStretchable( int s, bool b )
{
if ( stretchable[ s ] == b )
return;
stretchable[ s ] = b;
if ( b )
numStretches++;
else
numStretches--;
}
/*!
Returns TRUE if section \a s is stretcheable; otherwise returns
FALSE.
\sa setSectionStretchable()
*/
bool QTableHeader::isSectionStretchable( int s ) const
{
return stretchable[ s ];
}
void QTableHeader::swapSections( int oldIdx, int newIdx, bool swapTable )
{
extern bool qt_qheader_label_return_null_strings; // qheader.cpp
qt_qheader_label_return_null_strings = TRUE;
QIconSet oldIconSet, newIconSet;
if ( iconSet( oldIdx ) )
oldIconSet = *iconSet( oldIdx );
if ( iconSet( newIdx ) )
newIconSet = *iconSet( newIdx );
QString oldLabel = label( oldIdx );
QString newLabel = label( newIdx );
bool sectionsHasContent = !(oldIconSet.isNull() && newIconSet.isNull()
&& oldLabel.isNull() && newLabel.isNull());
if (sectionsHasContent) {
setLabel( oldIdx, newIconSet, newLabel );
setLabel( newIdx, oldIconSet, oldLabel );
}
qt_qheader_label_return_null_strings = FALSE;
int w1 = sectionSize( oldIdx );
int w2 = sectionSize( newIdx );
if ( w1 != w2 ) {
resizeSection( oldIdx, w2 );
resizeSection( newIdx, w1 );
}
if ( !swapTable )
return;
if ( orientation() == Horizontal )
table->swapColumns( oldIdx, newIdx );
else
table->swapRows( oldIdx, newIdx );
}
void QTableHeader::indexChanged( int sec, int oldIdx, int newIdx )
{
newIdx = mapToIndex( sec );
if ( oldIdx > newIdx )
moveSection( sec, oldIdx + 1 );
else
moveSection( sec, oldIdx );
if ( oldIdx < newIdx ) {
while ( oldIdx < newIdx ) {
swapSections( oldIdx, oldIdx + 1 );
oldIdx++;
}
} else {
while ( oldIdx > newIdx ) {
swapSections( oldIdx - 1, oldIdx );
oldIdx--;
}
}
table->repaintContents( table->contentsX(), table->contentsY(),
table->visibleWidth(), table->visibleHeight() );
}
void QTableHeader::setLabels(const QStringList & labels)
{
int i = 0;
bool updates = isUpdatesEnabled();
const int c = QMIN(count(), (int)labels.count());
setUpdatesEnabled(FALSE);
for ( QStringList::ConstIterator it = labels.begin(); i < c; ++i, ++it ) {
if (i == c - 1) {
setUpdatesEnabled(updates);
setLabel( i, *it );
} else {
QHeader::setLabel( i, *it );
emit sectionSizeChanged( i );
}
}
}
#include "qtable.moc"
#endif // QT_NO_TABLE
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