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tqt3/src/widgets/qlistbox.cpp

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Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
13 years ago
/**********************************************************************
**
** Implementation of TQListBox widget class
**
** Created : 941121
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the widgets module of the TQt 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 TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing retquirements 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.TQPL
** included in the packaging of this file. Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** 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 "qlistbox.h"
#ifndef QT_NO_LISTBOX
#include "qmemarray.h"
#include "qfontmetrics.h"
#include "qpainter.h"
#include "qstrlist.h"
#include "qpixmap.h"
#include "qapplication.h"
#include "qptrdict.h"
#include "qtimer.h"
#include "qstringlist.h"
#include "qstyle.h"
#include "qpopupmenu.h"
#include "qguardedptr.h"
#if defined(QT_ACCESSIBILITY_SUPPORT)
#include "qaccessible.h"
#endif
#include <stdlib.h>
class TQListBoxPrivate
{
public:
TQListBoxPrivate( TQListBox *lb ):
head( 0 ), last( 0 ), cache( 0 ), cacheIndex( -1 ), current( 0 ),
highlighted( 0 ), tmpCurrent( 0 ), columnPos( 1 ), rowPos( 1 ), rowPosCache( 0 ),
columnPosOne( 0 ), rowMode( TQListBox::FixedNumber ),
columnMode( TQListBox::FixedNumber ), numRows( 1 ), numColumns( 1 ),
currentRow( 0 ), currentColumn( 0 ),
mousePressRow( -1 ), mousePressColumn( -1 ),
mouseMoveRow( -1 ), mouseMoveColumn( -1 ), mouseInternalPress( FALSE ),
scrollTimer( 0 ), updateTimer( 0 ), visibleTimer( 0 ),
selectionMode( TQListBox::Single ),
count( 0 ),
listBox( lb ), currInputString( TQString::null ),
rowModeWins( FALSE ),
ignoreMoves( FALSE ),
layoutDirty( TRUE ),
mustPaintAll( TRUE ),
dragging( FALSE ),
dirtyDrag ( FALSE ),
variableHeight( TRUE /* !!! ### FALSE */ ),
variableWidth( FALSE ),
inMenuMode( FALSE )
{}
int findItemByName( int item, const TQString &text );
~TQListBoxPrivate();
TQListBoxItem * head, *last, *cache;
int cacheIndex;
TQListBoxItem * current, *highlighted, *tmpCurrent;
TQMemArray<int> columnPos;
TQMemArray<int> rowPos;
int rowPosCache;
int columnPosOne;
TQListBox::LayoutMode rowMode;
TQListBox::LayoutMode columnMode;
int numRows;
int numColumns;
int currentRow;
int currentColumn;
int mousePressRow;
int mousePressColumn;
int mouseMoveRow;
int mouseMoveColumn;
bool mouseInternalPress;
TQTimer * scrollTimer;
TQTimer * updateTimer;
TQTimer * visibleTimer;
TQTimer * resizeTimer;
TQPoint scrollPos;
TQListBox::SelectionMode selectionMode;
int count;
TQListBox *listBox;
TQString currInputString;
TQTimer *inputTimer;
TQListBoxItem *pressedItem, *selectAnchor;
uint select :1;
uint pressedSelected :1;
uint rowModeWins :1;
uint ignoreMoves :1;
uint clearing :1;
uint layoutDirty :1;
uint mustPaintAll :1;
uint dragging :1;
uint dirtyDrag :1;
uint variableHeight :1;
uint variableWidth :1;
uint inMenuMode :1;
TQRect *rubber;
TQPtrDict<bool> selectable;
struct SortableItem {
TQListBoxItem *item;
};
};
TQListBoxPrivate::~TQListBoxPrivate()
{
Q_ASSERT( !head );
}
/*!
\class TQListBoxItem qlistbox.h
\brief The TQListBoxItem class is the base class of all list box items.
This class is an abstract base class used for all list box items.
If you need to insert customized items into a TQListBox you must
inherit this class and reimplement paint(), height() and width().
\sa TQListBox
*/
/*!
\fn bool TQListBox::dragSelect() const
\internal
*/
/*!
\fn void TQListBox::setDragSelect( bool )
\internal
*/
/*!
\fn bool TQListBox::autoScroll() const
\internal
*/
/*!
\fn void TQListBox::setAutoScroll( bool )
\internal
*/
/*!
\fn bool TQListBox::autoScrollBar() const
\obsolete
Returns TRUE if vScrollBarMode() is \c Auto; otherwise returns
FALSE.
*/
/*!
\fn void TQListBox::setAutoScrollBar( bool enable )
\obsolete
If \a enable is TRUE sets setVScrollBarMode() to \c AlwaysOn;
otherwise sets setVScrollBarMode() to \c AlwaysOff.
*/
/*!
\fn bool TQListBox::scrollBar() const
\obsolete
Returns FALSE if vScrollBarMode() is \c AlwaysOff; otherwise
returns TRUE.
*/
/*!
\fn void TQListBox::setScrollBar( bool enable )
\obsolete
If \a enable is TRUE sets setVScrollBarMode() to \c AlwaysOn;
otherwise sets setVScrollBarMode() to \c AlwaysOff.
*/
/*!
\fn bool TQListBox::autoBottomScrollBar() const
\obsolete
Returns TRUE if hScrollBarMode() is \c Auto; otherwise returns
FALSE.
*/
/*!
\fn void TQListBox::setAutoBottomScrollBar( bool enable )
\obsolete
If \a enable is TRUE sets setHScrollBarMode() to \c AlwaysOn;
otherwise sets setHScrollBarMode() to \c AlwaysOff.
*/
/*!
\fn bool TQListBox::bottomScrollBar() const
\obsolete
Returns FALSE if vScrollBarMode() is \c AlwaysOff; otherwise
returns TRUE.
*/
/*!
\fn void TQListBox::setBottomScrollBar( bool enable )
\obsolete
If \a enable is TRUE sets setHScrollBarMode() to \c AlwaysOn;
otherwise sets setHScrollBarMode() to \c AlwaysOff.
*/
/*!
\fn bool TQListBox::smoothScrolling() const
\internal
*/
/*!
\fn void TQListBox::setSmoothScrolling( bool )
\internal
*/
/*!
\fn bool TQListBox::autoUpdate() const
\internal
*/
/*!
\fn void TQListBox::setAutoUpdate( bool )
\internal
*/
/*!
\fn void TQListBox::setFixedVisibleLines( int lines )
\internal
*/
/*!
\obsolete
\fn int TQListBox::cellHeight( int i ) const
Returns the item height of item \a i.
\sa itemHeight()
*/
/*!
\obsolete
\overload int TQListBox::cellHeight() const
Returns the item height of the first item, item 0.
\sa itemHeight()
*/
/*!
\obsolete
\fn int TQListBox::cellWidth() const
Returns the maximum item width.
\sa maxItemWidth()
*/
/*!
\overload int TQListBox::cellWidth(int i) const
\internal
*/
/*!
\obsolete
\fn int TQListBox::numCols() const
Returns the number of columns.
\sa numColumns()
*/
/*!
\fn void TQListBox::updateCellWidth()
\internal
*/
/*!
\obsolete
\fn int TQListBox::totalWidth() const
Returns contentsWidth().
*/
/*!
\obsolete
\fn int TQListBox::totalHeight() const
Returns contentsHeight().
*/
/*!
\obsolete
\fn int TQListBox::findItem( int yPos ) const
Returns the index of the item a point (0, \a yPos).
\sa index() itemAt()
*/
/*!
Constructs an empty list box item in the list box \a listbox.
*/
TQListBoxItem::TQListBoxItem( TQListBox* listbox )
{
lbox = listbox;
s = FALSE;
dirty = TRUE;
custom_highlight = FALSE;
p = n = 0;
// just something that'll look noticeable in the debugger
x = y = 42;
if (listbox)
listbox->insertItem( this );
}
/*!
Constructs an empty list box item in the list box \a listbox and
inserts it after the item \a after or at the beginning if \a after
is 0.
*/
TQListBoxItem::TQListBoxItem( TQListBox* listbox, TQListBoxItem *after )
{
lbox = listbox;
s = FALSE;
dirty = TRUE;
custom_highlight = FALSE;
p = n = 0;
// just something that'll be noticeable in the debugger
x = y = 42;
if (listbox)
listbox->insertItem( this, after );
}
/*!
Destroys the list box item.
*/
TQListBoxItem::~TQListBoxItem()
{
if ( lbox )
lbox->takeItem( this );
}
/*!
Defines whether the list box item is responsible for drawing
itself in a highlighted state when being selected.
If \a b is FALSE (the default), the list box will draw some
default highlight indicator before calling paint().
\sa selected(), paint()
*/
void TQListBoxItem::setCustomHighlighting( bool b )
{
custom_highlight = b;
}
/*!
\fn void TQListBoxItem::paint( TQPainter *p )
Implement this function to draw your item. The painter, \a p, is
already open for painting.
\sa height(), width()
*/
/*!
\fn int TQListBoxItem::width( const TQListBox* lb ) const
Reimplement this function to return the width of your item. The \a
lb parameter is the same as listBox() and is provided for
convenience and compatibility.
The default implementation returns
\l{TQApplication::globalStrut()}'s width.
\sa paint(), height()
*/
int TQListBoxItem::width(const TQListBox*) const
{
return TQApplication::globalStrut().width();
}
/*!
\fn int TQListBoxItem::height( const TQListBox* lb ) const
Implement this function to return the height of your item. The \a
lb parameter is the same as listBox() and is provided for
convenience and compatibility.
The default implementation returns
\l{TQApplication::globalStrut()}'s height.
\sa paint(), width()
*/
int TQListBoxItem::height(const TQListBox*) const
{
return TQApplication::globalStrut().height();
}
/*!
Returns the text of the item. This text is also used for sorting.
\sa setText()
*/
TQString TQListBoxItem::text() const
{
return txt;
}
/*!
Returns the pixmap associated with the item, or 0 if there isn't
one.
The default implementation returns 0.
*/
const TQPixmap *TQListBoxItem::pixmap() const
{
return 0;
}
/*!
If \a b is TRUE (the default) then this item can be selected by
the user; otherwise this item cannot be selected by the user.
\sa isSelectable()
*/
void TQListBoxItem::setSelectable( bool b )
{
if ( !listBox() )
return;
bool *sel = listBox()->d->selectable.find( this );
if ( !sel )
listBox()->d->selectable.insert( this, new bool( b ) );
else
listBox()->d->selectable.replace( this, new bool( b ) );
}
/*!
Returns TRUE if this item is selectable (the default); otherwise
returns FALSE.
\sa setSelectable()
*/
bool TQListBoxItem::isSelectable() const
{
if ( !listBox() )
return TRUE;
bool *sel = listBox()->d->selectable.find( ( (TQListBoxItem*)this ) );
if ( !sel )
return TRUE;
else
return *sel;
}
/*!
\fn void TQListBoxItem::setText( const TQString &text )
Sets the text of the TQListBoxItem to \a text. This \a text is also
used for sorting. The text is not shown unless explicitly drawn in
paint().
\sa text()
*/
/*!
\class TQListBoxText qlistbox.h
\brief The TQListBoxText class provides list box items that display text.
\ingroup advanced
The text is drawn in the widget's current font. If you need
several different fonts, you must implement your own subclass of
TQListBoxItem.
\sa TQListBox, TQListBoxItem
*/
/*!
Constructs a list box item in list box \a listbox showing the text
\a text.
*/
TQListBoxText::TQListBoxText( TQListBox *listbox, const TQString &text )
:TQListBoxItem( listbox )
{
setText( text );
}
/*!
Constructs a list box item showing the text \a text.
*/
TQListBoxText::TQListBoxText( const TQString &text )
:TQListBoxItem()
{
setText( text );
}
/*!
Constructs a list box item in list box \a listbox showing the text
\a text. The item is inserted after the item \a after, or at the
beginning if \a after is 0.
*/
TQListBoxText::TQListBoxText( TQListBox* listbox, const TQString &text, TQListBoxItem *after )
: TQListBoxItem( listbox, after )
{
setText( text );
}
/*!
Destroys the item.
*/
TQListBoxText::~TQListBoxText()
{
}
/*!
Draws the text using \a painter.
*/
void TQListBoxText::paint( TQPainter *painter )
{
int itemHeight = height( listBox() );
TQFontMetrics fm = painter->fontMetrics();
int yPos = ( ( itemHeight - fm.height() ) / 2 ) + fm.ascent();
painter->drawText( 3, yPos, text() );
}
/*!
Returns the height of a line of text in list box \a lb.
\sa paint(), width()
*/
int TQListBoxText::height( const TQListBox* lb ) const
{
int h = lb ? lb->fontMetrics().lineSpacing() + 2 : 0;
return TQMAX( h, TQApplication::globalStrut().height() );
}
/*!
Returns the width of this line in list box \a lb.
\sa paint(), height()
*/
int TQListBoxText::width( const TQListBox* lb ) const
{
int w = lb ? lb->fontMetrics().width( text() ) + 6 : 0;
return TQMAX( w, TQApplication::globalStrut().width() );
}
int TQListBoxText::RTTI = 1;
/*!
\fn int TQListBoxText::rtti() const
\reimp
Returns 1.
Make your derived classes return their own values for rtti(), and
you can distinguish between listbox items. You should use values
greater than 1000 preferably a large random number, to allow for
extensions to this class.
*/
int TQListBoxText::rtti() const
{
return RTTI;
}
/*!
\class TQListBoxPixmap qlistbox.h
\brief The TQListBoxPixmap class provides list box items with a
pixmap and optional text.
\ingroup advanced
Items of this class are drawn with the pixmap on the left with the
optional text to the right of the pixmap.
\sa TQListBox, TQListBoxItem
*/
/*!
Constructs a new list box item in list box \a listbox showing the
pixmap \a pixmap.
*/
TQListBoxPixmap::TQListBoxPixmap( TQListBox* listbox, const TQPixmap &pixmap )
: TQListBoxItem( listbox )
{
pm = pixmap;
}
/*!
Constructs a new list box item showing the pixmap \a pixmap.
*/
TQListBoxPixmap::TQListBoxPixmap( const TQPixmap &pixmap )
: TQListBoxItem()
{
pm = pixmap;
}
/*!
Constructs a new list box item in list box \a listbox showing the
pixmap \a pixmap. The item gets inserted after the item \a after,
or at the beginning if \a after is 0.
*/
TQListBoxPixmap::TQListBoxPixmap( TQListBox* listbox, const TQPixmap &pixmap, TQListBoxItem *after )
: TQListBoxItem( listbox, after )
{
pm = pixmap;
}
/*!
Destroys the item.
*/
TQListBoxPixmap::~TQListBoxPixmap()
{
}
/*!
Constructs a new list box item in list box \a listbox showing the
pixmap \a pix and the text \a text.
*/
TQListBoxPixmap::TQListBoxPixmap( TQListBox* listbox, const TQPixmap &pix, const TQString& text)
: TQListBoxItem( listbox )
{
pm = pix;
setText( text );
}
/*!
Constructs a new list box item showing the pixmap \a pix and the
text to \a text.
*/
TQListBoxPixmap::TQListBoxPixmap( const TQPixmap & pix, const TQString& text)
: TQListBoxItem()
{
pm = pix;
setText( text );
}
/*!
Constructs a new list box item in list box \a listbox showing the
pixmap \a pix and the string \a text. The item gets inserted after
the item \a after, or at the beginning if \a after is 0.
*/
TQListBoxPixmap::TQListBoxPixmap( TQListBox* listbox, const TQPixmap & pix, const TQString& text,
TQListBoxItem *after )
: TQListBoxItem( listbox, after )
{
pm = pix;
setText( text );
}
/*!
\fn const TQPixmap *TQListBoxPixmap::pixmap() const
Returns the pixmap associated with the item.
*/
/*!
Draws the pixmap using \a painter.
*/
void TQListBoxPixmap::paint( TQPainter *painter )
{
int itemHeight = height( listBox() );
int yPos;
const TQPixmap *pm = pixmap();
if ( pm && ! pm->isNull() ) {
yPos = ( itemHeight - pm->height() ) / 2;
painter->drawPixmap( 3, yPos, *pm);
}
if ( !text().isEmpty() ) {
TQFontMetrics fm = painter->fontMetrics();
yPos = ( ( itemHeight - fm.height() ) / 2 ) + fm.ascent();
painter->drawText( pm->width() + 5, yPos, text() );
}
}
/*!
Returns the height of the pixmap in list box \a lb.
\sa paint(), width()
*/
int TQListBoxPixmap::height( const TQListBox* lb ) const
{
int h;
if ( text().isEmpty() )
h = pm.height();
else
h = TQMAX( pm.height(), lb->fontMetrics().lineSpacing() + 2 );
return TQMAX( h, TQApplication::globalStrut().height() );
}
/*!
Returns the width of the pixmap plus some margin in list box \a lb.
\sa paint(), height()
*/
int TQListBoxPixmap::width( const TQListBox* lb ) const
{
if ( text().isEmpty() )
return TQMAX( pm.width() + 6, TQApplication::globalStrut().width() );
return TQMAX( pm.width() + lb->fontMetrics().width( text() ) + 6,
TQApplication::globalStrut().width() );
}
int TQListBoxPixmap::RTTI = 2;
/*!
\fn int TQListBoxPixmap::rtti() const
\reimp
Returns 2.
Make your derived classes return their own values for rtti(), and
you can distinguish between listbox items. You should use values
greater than 1000 preferably a large random number, to allow for
extensions to this class.
*/
int TQListBoxPixmap::rtti() const
{
return RTTI;
}
/*!
\class TQListBox qlistbox.h
\brief The TQListBox widget provides a list of selectable, read-only items.
\ingroup advanced
\mainclass
This is typically a single-column list in which either no item or
one item is selected, but it can also be used in many other ways.
TQListBox will add scroll bars as necessary, but it isn't intended
for \e really big lists. If you want more than a few thousand
items, it's probably better to use a different widget mainly
because the scroll bars won't provide very good navigation, but
also because TQListBox may become slow with huge lists. (See
TQListView and TQTable for possible alternatives.)
There are a variety of selection modes described in the
TQListBox::SelectionMode documentation. The default is \c Single
selection mode, but you can change it using setSelectionMode().
(setMultiSelection() is still provided for compatibility with TQt
1.x. We recommend using setSelectionMode() in all code.)
Because TQListBox offers multiple selection it must display
keyboard focus and selection state separately. Therefore there are
functions both to set the selection state of an item, i.e.
setSelected(), and to set which item displays keyboard focus, i.e.
setCurrentItem().
The list box normally arranges its items in a single column and
adds a vertical scroll bar if retquired. It is possible to have a
different fixed number of columns (setColumnMode()), or as many
columns as will fit in the list box's assigned screen space
(setColumnMode(FitToWidth)), or to have a fixed number of rows
(setRowMode()) or as many rows as will fit in the list box's
assigned screen space (setRowMode(FitToHeight)). In all these
cases TQListBox will add scroll bars, as appropriate, in at least
one direction.
If multiple rows are used, each row can be as high as necessary
(the normal setting), or you can request that all items will have
the same height by calling setVariableHeight(FALSE). The same
applies to a column's width, see setVariableWidth().
The TQListBox's items are TQListBoxItem objects. TQListBox provides
methods to insert new items as strings, as pixmaps, and as
TQListBoxItem * (insertItem() with various arguments), and to
replace an existing item with a new string, pixmap or TQListBoxItem
(changeItem() with various arguments). You can also remove items
singly with removeItem() or clear() the entire list box. Note that
if you create a TQListBoxItem yourself and insert it, TQListBox
takes ownership of the item.
You can also create a TQListBoxItem, such as TQListBoxText or
TQListBoxPixmap, with the list box as first parameter. The item
will then append itself. When you delete an item it is
automatically removed from the list box.
The list of items can be arbitrarily large; TQListBox will add
scroll bars if necessary. TQListBox can display a single-column
(the common case) or multiple-columns, and offers both single and
multiple selection. TQListBox does not support multiple-column
items (but TQListView and TQTable do), or tree hierarchies (but
TQListView does).
The list box items can be accessed both as TQListBoxItem objects
(recommended) and using integer indexes (the original TQListBox
implementation used an array of strings internally, and the API
still supports this mode of operation). Everything can be done
using the new objects, and most things can be done using indexes.
Each item in a TQListBox contains a TQListBoxItem. One of the items
can be the current item. The currentChanged() signal and the
highlighted() signal are emitted when a new item becomes current,
e.g. because the user clicks on it or TQListBox::setCurrentItem()
is called. The selected() signal is emitted when the user
double-clicks on an item or presses Enter on the current item.
If the user does not select anything, no signals are emitted and
currentItem() returns -1.
A list box has \c WheelFocus as a default focusPolicy(), i.e. it
can get keyboard focus by tabbing, clicking and through the use of
the mouse wheel.
New items can be inserted using insertItem(), insertStrList() or
insertStringList(). inSort() is obsolete because this method is
Fix native TQt3 accidental conversion to tquit
13 years ago
quite inefficient. It's preferable to insert the items normally
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
13 years ago
and call sort() afterwards, or to insert a sorted TQStringList().
By default, vertical and horizontal scroll bars are added and
removed as necessary. setHScrollBarMode() and setVScrollBarMode()
can be used to change this policy.
If you need to insert types other than strings and pixmaps, you
must define new classes which inherit TQListBoxItem.
\warning The list box assumes ownership of all list box items and
will delete them when it does not need them any more.
<img src=qlistbox-m.png> <img src=qlistbox-w.png>
\sa TQListView TQComboBox TQButtonGroup
\link guibooks.html#fowler GUI Design Handbook: List Box (two
sections)\endlink
*/
/*!
\enum TQListBox::SelectionMode
This enumerated type is used by TQListBox to indicate how it reacts
to selection by the user.
\value Single When the user selects an item, any already-selected
item becomes unselected and the user cannot unselect the selected
item. This means that the user can never clear the selection, even
though the selection may be cleared by the application programmer
using TQListBox::clearSelection().
\value Multi When the user selects an item the selection status
of that item is toggled and the other items are left alone. Also,
multiple items can be selected by dragging the mouse while the
left mouse button is kept pressed.
\value Extended When the user selects an item the selection is
cleared and the new item selected. However, if the user presses
the Ctrl key when clicking on an item, the clicked item gets
toggled and all other items are left untouched. And if the user
presses the Shift key while clicking on an item, all items between
the current item and the clicked item get selected or unselected,
depending on the state of the clicked item. Also, multiple items
can be selected by dragging the mouse while the left mouse button
is kept pressed.
\value NoSelection Items cannot be selected.
In other words, \c Single is a real single-selection list box, \c
Multi is a real multi-selection list box, \c Extended is a list
box in which users can select multiple items but usually want to
select either just one or a range of contiguous items, and \c
NoSelection is for a list box where the user can look but not
touch.
*/
/*!
\enum TQListBox::LayoutMode
This enum type is used to specify how TQListBox lays out its rows
and columns.
\value FixedNumber There is a fixed number of rows (or columns).
\value FitToWidth There are as many columns as will fit
on-screen.
\value FitToHeight There are as many rows as will fit on-screen.
\value Variable There are as many rows as are retquired by the
column mode. (Or as many columns as retquired by the row mode.)
Example: When you call setRowMode( FitToHeight ), columnMode()
automatically becomes \c Variable to accommodate the row mode
you've set.
*/
/*!
\fn void TQListBox::onItem( TQListBoxItem *i )
This signal is emitted when the user moves the mouse cursor onto
an item, similar to the TQWidget::enterEvent() function. \a i is
the TQListBoxItem that the mouse has moved on.
*/
// ### bug here too? enter/leave event may noit considered. move the
// mouse out of the window and back in, to the same item - does it
// work?
/*!
\fn void TQListBox::onViewport()
This signal is emitted when the user moves the mouse cursor from
an item to an empty part of the list box.
*/
/*!
Constructs a new empty list box called \a name and with parent \a
parent.
Performance is boosted by modifying the widget flags \a f so that
only part of the TQListBoxItem children is redrawn. This may be
unsuitable for custom TQListBoxItem classes, in which case \c
WStaticContents and \c WNoAutoErase should be cleared
immediately after construction.
\sa TQWidget::clearWFlags() TQt::WidgetFlags
*/
TQListBox::TQListBox( TQWidget *parent, const char *name, WFlags f )
: TQScrollView( parent, name, f | WStaticContents | WNoAutoErase )
{
d = new TQListBoxPrivate( this );
d->updateTimer = new TQTimer( this, "listbox update timer" );
d->visibleTimer = new TQTimer( this, "listbox visible timer" );
d->inputTimer = new TQTimer( this, "listbox input timer" );
d->resizeTimer = new TQTimer( this, "listbox resize timer" );
d->clearing = FALSE;
d->pressedItem = 0;
d->selectAnchor = 0;
d->select = FALSE;
d->rubber = 0;
d->selectable.setAutoDelete( TRUE );
setMouseTracking( TRUE );
viewport()->setMouseTracking( TRUE );
connect( d->updateTimer, SIGNAL(timeout()),
this, SLOT(refreshSlot()) );
connect( d->visibleTimer, SIGNAL(timeout()),
this, SLOT(ensureCurrentVisible()) );
connect( d->resizeTimer, SIGNAL( timeout() ),
this, SLOT( adjustItems() ) );
viewport()->setBackgroundMode( PaletteBase );
setBackgroundMode( PaletteBackground, PaletteBase );
viewport()->setFocusProxy( this );
viewport()->setFocusPolicy( WheelFocus );
}
TQListBox * TQListBox::changedListBox = 0;
/*!
Destroys the list box. Deletes all list box items.
*/
TQListBox::~TQListBox()
{
if ( changedListBox == this )
changedListBox = 0;
clear();
delete d;
d = 0;
}
/*!
\fn void TQListBox::pressed( TQListBoxItem *item )
This signal is emitted when the user presses any mouse button. If
\a item is not 0, the cursor is on \a item. If \a item is 0, the
mouse cursor isn't on any item.
Note that you must not delete any TQListBoxItem objects in slots
connected to this signal.
*/
/*!
\overload void TQListBox::pressed( TQListBoxItem *item, const TQPoint &pnt )
This signal is emitted when the user presses any mouse button. If
\a item is not 0, the cursor is on \a item. If \a item is 0, the
mouse cursor isn't on any item.
\a pnt is the position of the mouse cursor in the global
coordinate system (TQMouseEvent::globalPos()).
Note that you must not delete any TQListBoxItem objects in slots
connected to this signal.
\sa mouseButtonPressed() rightButtonPressed() clicked()
*/
/*!
\fn void TQListBox::clicked( TQListBoxItem *item )
This signal is emitted when the user clicks any mouse button. If
\a item is not 0, the cursor is on \a item. If \a item is 0, the
mouse cursor isn't on any item.
Note that you must not delete any TQListBoxItem objects in slots
connected to this signal.
*/
/*!
\overload void TQListBox::clicked( TQListBoxItem *item, const TQPoint &pnt )
This signal is emitted when the user clicks any mouse button. If
\a item is not 0, the cursor is on \a item. If \a item is 0, the
mouse cursor isn't on any item.
\a pnt is the position of the mouse cursor in the global
coordinate system (TQMouseEvent::globalPos()). (If the click's
press and release differs by a pixel or two, \a pnt is the
position at release time.)
Note that you must not delete any TQListBoxItem objects in slots
connected to this signal.
*/
/*!
\fn void TQListBox::mouseButtonClicked (int button, TQListBoxItem * item, const TQPoint & pos)
This signal is emitted when the user clicks mouse button \a
button. If \a item is not 0, the cursor is on \a item. If \a item
is 0, the mouse cursor isn't on any item.
\a pos is the position of the mouse cursor in the global
coordinate system (TQMouseEvent::globalPos()). (If the click's
press and release differs by a pixel or two, \a pos is the
position at release time.)
Note that you must not delete any TQListBoxItem objects in slots
connected to this signal.
*/
/*!
\fn void TQListBox::mouseButtonPressed (int button, TQListBoxItem * item, const TQPoint & pos)
This signal is emitted when the user presses mouse button \a
button. If \a item is not 0, the cursor is on \a item. If \a item
is 0, the mouse cursor isn't on any item.
\a pos is the position of the mouse cursor in the global
coordinate system (TQMouseEvent::globalPos()).
Note that you must not delete any TQListBoxItem objects in slots
connected to this signal.
*/
/*!
\fn void TQListBox::doubleClicked( TQListBoxItem *item )
This signal is emitted whenever an item is double-clicked. It's
emitted on the second button press, not the second button release.
If \a item is not 0, the cursor is on \a item. If \a item is 0,
the mouse cursor isn't on any item.
*/
/*!
\fn void TQListBox::returnPressed( TQListBoxItem * )
This signal is emitted when Enter or Return is pressed. The
argument is currentItem().
*/
/*!
\fn void TQListBox::rightButtonClicked( TQListBoxItem *, const TQPoint& )
This signal is emitted when the right button is clicked (i.e. when
it's released at the same point where it was pressed). The
arguments are the relevant TQListBoxItem (may be 0) and the point
in global coordinates.
*/
/*!
\fn void TQListBox::rightButtonPressed (TQListBoxItem *, const TQPoint & )
This signal is emitted when the right button is pressed. The
arguments are the relevant TQListBoxItem (may be 0) and the point
in global coordinates.
*/
/*!
\fn void TQListBox::contextMenuRequested( TQListBoxItem *item, const TQPoint & pos )
This signal is emitted when the user invokes a context menu with
the right mouse button or with special system keys, with \a item
being the item under the mouse cursor or the current item,
respectively.
\a pos is the position for the context menu in the global
coordinate system.
*/
/*!
\fn void TQListBox::selectionChanged()
This signal is emitted when the selection set of a list box
changes. This signal is emitted in each selection mode. If the
user selects five items by drag-selecting, TQListBox tries to emit
just one selectionChanged() signal so the signal can be connected
to computationally expensive slots.
\sa selected() currentItem()
*/
/*!
\overload void TQListBox::selectionChanged( TQListBoxItem *item )
This signal is emitted when the selection in a \c Single selection
list box changes. \a item is the newly selected list box item.
\sa selected() currentItem()
*/
/*!
\fn void TQListBox::currentChanged( TQListBoxItem *item )
This signal is emitted when the user makes a new item the current
item. \a item is the new current list box item.
\sa setCurrentItem() currentItem()
*/
/*!
\fn void TQListBox::highlighted( int index )
This signal is emitted when the user makes a new item the current
item. \a index is the index of the new current item.
\sa currentChanged() selected() currentItem() selectionChanged()
*/
/*!
\overload void TQListBox::highlighted( TQListBoxItem * )
This signal is emitted when the user makes a new item the current
item. The argument is a pointer to the new current item.
\sa currentChanged() selected() currentItem() selectionChanged()
*/
/*!
\overload void TQListBox::highlighted( const TQString & )
This signal is emitted when the user makes a new item the current
item and the item is (or has) a string. The argument is the text
of the new current item.
\sa currentChanged() selected() currentItem() selectionChanged()
*/
/*!
\fn void TQListBox::selected( int index )
This signal is emitted when the user double-clicks on an item or
presses Enter on the current item. \a index is the index of the
selected item.
\sa currentChanged() highlighted() selectionChanged()
*/
/*!
\overload void TQListBox::selected( TQListBoxItem * )
This signal is emitted when the user double-clicks on an item or
presses Enter on the current item. The argument is a pointer to
the new selected item.
\sa currentChanged() highlighted() selectionChanged()
*/
/*!
\overload void TQListBox::selected( const TQString &)
This signal is emitted when the user double-clicks on an item or
presses Enter on the current item, and the item is (or has) a
string. The argument is the text of the selected item.
\sa currentChanged() highlighted() selectionChanged()
*/
/*! \reimp */
void TQListBox::setFont( const TQFont &font )
{
TQScrollView::setFont( font );
triggerUpdate( TRUE );
}
/*!
\property TQListBox::count
\brief the number of items in the list box
*/
uint TQListBox::count() const
{
return d->count;
}
/*!
Inserts the string list \a list into the list at position \a
index.
If \a index is negative, \a list is inserted at the end of the
list. If \a index is too large, the operation is ignored.
\warning This function uses \c{const char *} rather than TQString,
so we recommend against using it. It is provided so that legacy
code will continue to work, and so that programs that certainly
will not need to handle code outside a single 8-bit locale can use
it. See insertStringList() which uses real TQStrings.
\warning This function is never significantly faster than a loop
around insertItem().
\sa insertItem(), insertStringList()
*/
void TQListBox::insertStrList( const TQStrList *list, int index )
{
if ( !list ) {
#if defined(QT_CHECK_NULL)
Q_ASSERT( list != 0 );
#endif
return;
}
insertStrList( *list, index );
}
/*!
Inserts the string list \a list into the list at position \a
index.
If \a index is negative, \a list is inserted at the end of the
list. If \a index is too large, the operation is ignored.
\warning This function is never significantly faster than a loop
around insertItem().
\sa insertItem(), insertStrList()
*/
void TQListBox::insertStringList( const TQStringList & list, int index )
{
if ( index < 0 )
index = count();
for ( TQStringList::ConstIterator it = list.begin(); it != list.end(); ++it )
insertItem( new TQListBoxText(*it), index++ );
}
/*!
\overload
Inserts the string list \a list into the list at position \a
index.
If \a index is negative, \a list is inserted at the end of the
list. If \a index is too large, the operation is ignored.
\warning This function uses \c{const char *} rather than TQString,
so we recommend against using it. It is provided so that legacy
code will continue to work, and so that programs that certainly
will not need to handle code outside a single 8-bit locale can use
it. See insertStringList() which uses real TQStrings.
\warning This function is never significantly faster than a loop
around insertItem().
\sa insertItem(), insertStringList()
*/
void TQListBox::insertStrList( const TQStrList & list, int index )
{
TQStrListIterator it( list );
const char* txt;
if ( index < 0 )
index = count();
while ( (txt=it.current()) ) {
++it;
insertItem( new TQListBoxText(TQString::fromLatin1(txt)),
index++ );
}
if ( hasFocus() && !d->current )
setCurrentItem( d->head );
}
/*!
\overload
Inserts the \a numStrings strings of the array \a strings into the
list at position \a index.
If \a index is negative, insertStrList() inserts \a strings at the
end of the list. If \a index is too large, the operation is
ignored.
\warning This function uses \c{const char *} rather than TQString,
so we recommend against using it. It is provided so that legacy
code will continue to work, and so that programs that certainly
will not need to handle code outside a single 8-bit locale can use
it. See insertStringList() which uses real TQStrings.
\warning This function is never significantly faster than a loop
around insertItem().
\sa insertItem(), insertStringList()
*/
void TQListBox::insertStrList( const char **strings, int numStrings, int index )
{
if ( !strings ) {
#if defined(QT_CHECK_NULL)
Q_ASSERT( strings != 0 );
#endif
return;
}
if ( index < 0 )
index = count();
int i = 0;
while ( (numStrings<0 && strings[i]!=0) || i<numStrings ) {
insertItem( new TQListBoxText( TQString::fromLatin1(strings[i])),
index + i );
i++;
}
if ( hasFocus() && !d->current )
setCurrentItem( d->head );
}
/*!
Inserts the item \a lbi into the list at position \a index.
If \a index is negative or larger than the number of items in the
list box, \a lbi is inserted at the end of the list.
\sa insertStrList()
*/
void TQListBox::insertItem( const TQListBoxItem *lbi, int index )
{
#if defined ( QT_CHECK_NULL )
Q_ASSERT( lbi != 0 );
#else
if ( !lbi )
return;
#endif
if ( index < 0 )
index = d->count;
if ( index >= d->count ) {
insertItem( lbi, d->last );
return;
}
TQListBoxItem * item = (TQListBoxItem *)lbi;
d->count++;
d->cache = 0;
item->lbox = this;
if ( !d->head || index == 0 ) {
item->n = d->head;
item->p = 0;
d->head = item;
item->dirty = TRUE;
if ( item->n )
item->n->p = item;
} else {
TQListBoxItem * i = d->head;
while ( i->n && index > 1 ) {
i = i->n;
index--;
}
if ( i->n ) {
item->n = i->n;
item->p = i;
item->n->p = item;
item->p->n = item;
} else {
i->n = item;
item->p = i;
item->n = 0;
}
}
if ( hasFocus() && !d->current ) {
d->current = d->head;
updateItem( d->current );
emit highlighted( d->current );
emit highlighted( d->current->text() );
emit highlighted( index );
}
triggerUpdate( TRUE );
}
/*!
\overload
Inserts the item \a lbi into the list after the item \a after, or
at the beginning if \a after is 0.
\sa insertStrList()
*/
void TQListBox::insertItem( const TQListBoxItem *lbi, const TQListBoxItem *after )
{
#if defined ( QT_CHECK_NULL )
Q_ASSERT( lbi != 0 );
#else
if ( !lbi )
return;
#endif
TQListBoxItem * item = (TQListBoxItem*)lbi;
d->count++;
d->cache = 0;
item->lbox = this;
if ( !d->head || !after ) {
item->n = d->head;
item->p = 0;
d->head = item;
item->dirty = TRUE;
if ( item->n )
item->n->p = item;
} else {
TQListBoxItem * i = (TQListBoxItem*) after;
if ( i ) {
item->n = i->n;
item->p = i;
if ( item->n )
item->n->p = item;
if ( item->p )
item->p->n = item;
}
}
if ( after == d->last )
d->last = (TQListBoxItem*) lbi;
if ( hasFocus() && !d->current ) {
d->current = d->head;
updateItem( d->current );
emit highlighted( d->current );
emit highlighted( d->current->text() );
emit highlighted( index( d->current ) );
}
triggerUpdate( TRUE );
}
/*!
\overload
Inserts a new list box text item with the text \a text into the
list at position \a index.
If \a index is negative, \a text is inserted at the end of the
list.
\sa insertStrList()
*/
void TQListBox::insertItem( const TQString &text, int index )
{
insertItem( new TQListBoxText(text), index );
}
/*!
\overload
Inserts a new list box pixmap item with the pixmap \a pixmap into
the list at position \a index.
If \a index is negative, \a pixmap is inserted at the end of the
list.
\sa insertStrList()
*/
void TQListBox::insertItem( const TQPixmap &pixmap, int index )
{
insertItem( new TQListBoxPixmap(pixmap), index );
}
/*!
\overload
Inserts a new list box pixmap item with the pixmap \a pixmap and
the text \a text into the list at position \a index.
If \a index is negative, \a pixmap is inserted at the end of the
list.
\sa insertStrList()
*/
void TQListBox::insertItem( const TQPixmap &pixmap, const TQString &text, int index )
{
insertItem( new TQListBoxPixmap(pixmap, text), index );
}
/*!
Removes and deletes the item at position \a index. If \a index is
equal to currentItem(), a new item becomes current and the
currentChanged() and highlighted() signals are emitted.
\sa insertItem(), clear()
*/
void TQListBox::removeItem( int index )
{
bool wasVisible = itemVisible( currentItem() );
delete item( index );
triggerUpdate( TRUE );
if ( wasVisible )
ensureCurrentVisible();
}
/*!
Deletes all the items in the list.
\sa removeItem()
*/
void TQListBox::clear()
{
setContentsPos( 0, 0 );
bool blocked = signalsBlocked();
blockSignals( TRUE );
d->clearing = TRUE;
d->current = 0;
d->tmpCurrent = 0;
TQListBoxItem * i = d->head;
d->head = 0;
while ( i ) {
TQListBoxItem * n = i->n;
i->n = i->p = 0;
delete i;
i = n;
}
d->count = 0;
d->numRows = 1;
d->numColumns = 1;
d->currentRow = 0;
d->currentColumn = 0;
d->mousePressRow = -1;
d->mousePressColumn = -1;
d->mouseMoveRow = -1;
d->mouseMoveColumn = -1;
d->selectable.clear();
clearSelection();
blockSignals( blocked );
triggerUpdate( TRUE );
d->last = 0;
d->clearing = FALSE;
}
/*!
Returns the text at position \a index, or TQString::null if there
is no text at that position.
\sa pixmap()
*/
TQString TQListBox::text( int index ) const
{
TQListBoxItem * i = item( index );
if ( i )
return i->text();
return TQString::null;
}
/*!
Returns a pointer to the pixmap at position \a index, or 0 if
there is no pixmap there.
\sa text()
*/
const TQPixmap *TQListBox::pixmap( int index ) const
{
TQListBoxItem * i = item( index );
if ( i )
return i->pixmap();
return 0;
}
/*!
\overload
Replaces the item at position \a index with a new list box text
item with text \a text.
The operation is ignored if \a index is out of range.
\sa insertItem(), removeItem()
*/
void TQListBox::changeItem( const TQString &text, int index )
{
if( index >= 0 && index < (int)count() )
changeItem( new TQListBoxText(text), index );
}
/*!
\overload
Replaces the item at position \a index with a new list box pixmap
item with pixmap \a pixmap.
The operation is ignored if \a index is out of range.
\sa insertItem(), removeItem()
*/
void TQListBox::changeItem( const TQPixmap &pixmap, int index )
{
if( index >= 0 && index < (int)count() )
changeItem( new TQListBoxPixmap(pixmap), index );
}
/*!
\overload
Replaces the item at position \a index with a new list box pixmap
item with pixmap \a pixmap and text \a text.
The operation is ignored if \a index is out of range.
\sa insertItem(), removeItem()
*/
void TQListBox::changeItem( const TQPixmap &pixmap, const TQString &text, int index )
{
if( index >= 0 && index < (int)count() )
changeItem( new TQListBoxPixmap(pixmap, text), index );
}
/*!
Replaces the item at position \a index with \a lbi. If \a index is
negative or too large, changeItem() does nothing.
The item that has been changed will become selected.
\sa insertItem(), removeItem()
*/
void TQListBox::changeItem( const TQListBoxItem *lbi, int index )
{
if ( !lbi || index < 0 || index >= (int)count() )
return;
removeItem( index );
insertItem( lbi, index );
setCurrentItem( index );
}
/*!
\property TQListBox::numItemsVisible
\brief the number of visible items.
Both partially and entirely visible items are counted.
*/
int TQListBox::numItemsVisible() const
{
doLayout();
int columns = 0;
int x = contentsX();
int i=0;
while ( i < (int)d->columnPos.size()-1 &&
d->columnPos[i] < x )
i++;
if ( i < (int)d->columnPos.size()-1 &&
d->columnPos[i] > x )
columns++;
x += visibleWidth();
while ( i < (int)d->columnPos.size()-1 &&
d->columnPos[i] < x ) {
i++;
columns++;
}
int y = contentsY();
int rows = 0;
while ( i < (int)d->rowPos.size()-1 &&
d->rowPos[i] < y )
i++;
if ( i < (int)d->rowPos.size()-1 &&
d->rowPos[i] > y )
rows++;
y += visibleHeight();
while ( i < (int)d->rowPos.size()-1 &&
d->rowPos[i] < y ) {
i++;
rows++;
}
return rows*columns;
}
int TQListBox::currentItem() const
{
if ( !d->current || !d->head )
return -1;
return index( d->current );
}
/*!
\property TQListBox::currentText
\brief the text of the current item.
This is equivalent to text(currentItem()).
*/
/*!
\property TQListBox::currentItem
\brief the current highlighted item
When setting this property, the highlighting is moved to the item
and the list box scrolled as necessary.
If no item is current, currentItem() returns -1.
*/
void TQListBox::setCurrentItem( int index )
{
setCurrentItem( item( index ) );
}
/*!
\overload
Sets the current item to the TQListBoxItem \a i.
*/
void TQListBox::setCurrentItem( TQListBoxItem * i )
{
if ( !i || d->current == i || numRows() == 0 )
return;
TQRect mfrect = itemRect( i );
if ( mfrect.isValid() )
setMicroFocusHint( mfrect.x(), mfrect.y(), mfrect.width(), mfrect.height(), FALSE );
TQListBoxItem * o = d->current;
d->current = i;
int ind = index( i );
if ( i && selectionMode() == Single ) {
bool changed = FALSE;
if ( o && o->s ) {
changed = TRUE;
o->s = FALSE;
}
if ( i && !i->s && d->selectionMode != NoSelection && i->isSelectable() ) {
i->s = TRUE;
changed = TRUE;
emit selectionChanged( i );
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), ind+1, TQAccessible::StateChanged );
#endif
}
if ( changed ) {
emit selectionChanged();
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), 0, TQAccessible::Selection );
#endif
}
}
d->currentColumn = ind / numRows();
d->currentRow = ind % numRows();
if ( o )
updateItem( o );
if ( i )
updateItem( i );
// scroll after the items are redrawn
d->visibleTimer->start( 1, TRUE );
TQString tmp;
if ( i )
tmp = i->text();
emit highlighted( i );
if ( !tmp.isNull() )
emit highlighted( tmp );
emit highlighted( ind );
emit currentChanged( i );
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), ind+1, TQAccessible::Focus );
#endif
}
/*!
Returns a pointer to the item at position \a index, or 0 if \a
index is out of bounds.
\sa index()
*/
TQListBoxItem *TQListBox::item( int index ) const
{
if ( index < 0 || index > d->count -1 )
return 0;
TQListBoxItem * i = d->head;
if ( d->cache && index > 0 ) {
i = d->cache;
int idx = d->cacheIndex;
while ( i && idx < index ) {
idx++;
i = i->n;
}
while ( i && idx > index ) {
idx--;
i = i->p;
}
} else {
int idx = index;
while ( i && idx > 0 ) {
idx--;
i = i->n;
}
}
if ( index > 0 ) {
d->cache = i;
d->cacheIndex = index;
}
return i;
}
/*!
Returns the index of \a lbi, or -1 if the item is not in this list
box or \a lbi is 0.
\sa item()
*/
int TQListBox::index( const TQListBoxItem * lbi ) const
{
if ( !lbi )
return -1;
TQListBoxItem * i_n = d->head;
int c_n = 0;
if ( d->cache ) {
i_n = d->cache;
c_n = d->cacheIndex;
}
TQListBoxItem* i_p = i_n;
int c_p = c_n;
while ( ( i_n != 0 || i_p != 0 ) && i_n != lbi && i_p != lbi ) {
if ( i_n ) {
c_n++;
i_n = i_n->n;
}
if ( i_p ) {
c_p--;
i_p = i_p->p;
}
}
if ( i_p == lbi )
return c_p;
if ( i_n == lbi )
return c_n;
return -1;
}
/*!
Returns TRUE if the item at position \a index is at least partly
visible; otherwise returns FALSE.
*/
bool TQListBox::itemVisible( int index )
{
TQListBoxItem * i = item( index );
return i ? itemVisible( i ) : FALSE;
}
/*!
\overload
Returns TRUE if \a item is at least partly visible; otherwise
returns FALSE.
*/
bool TQListBox::itemVisible( const TQListBoxItem * item )
{
if ( d->layoutDirty )
doLayout();
int i = index( item );
int col = i / numRows();
int row = i % numRows();
return ( d->columnPos[col] < contentsX()+visibleWidth() &&
d->rowPos[row] < contentsY()+visibleHeight() &&
d->columnPos[col+1] > contentsX() &&
d->rowPos[row+1] > contentsY() );
}
/*! \reimp */
void TQListBox::mousePressEvent( TQMouseEvent *e )
{
mousePressEventEx( e );
}
void TQListBox::mousePressEventEx( TQMouseEvent *e )
{
d->mouseInternalPress = TRUE;
TQListBoxItem * i = itemAt( e->pos() );
if ( !i && !d->current && d->head ) {
d->current = d->head;
updateItem( d->head );
}
if ( !i && ( d->selectionMode != Single || e->button() == RightButton )
&& !( e->state() & ControlButton ) )
clearSelection();
d->select = d->selectionMode == Multi ? ( i ? !i->isSelected() : FALSE ) : TRUE;
d->pressedSelected = i && i->s;
if ( i )
d->selectAnchor = i;
if ( i ) {
switch( selectionMode() ) {
default:
case Single:
if ( !i->s || i != d->current ) {
if ( i->isSelectable() )
setSelected( i, TRUE );
else
setCurrentItem( i );
}
break;
case Extended:
if ( i ) {
if ( !(e->state() & TQMouseEvent::ShiftButton) &&
!(e->state() & TQMouseEvent::ControlButton) ) {
if ( !i->isSelected() ) {
bool b = signalsBlocked();
blockSignals( TRUE );
clearSelection();
blockSignals( b );
}
setSelected( i, TRUE );
d->dragging = TRUE; // always assume dragging
} else if ( e->state() & ShiftButton ) {
d->pressedSelected = FALSE;
TQListBoxItem *oldCurrent = item( currentItem() );
bool down = index( oldCurrent ) < index( i );
TQListBoxItem *lit = down ? oldCurrent : i;
bool select = d->select;
bool blocked = signalsBlocked();
blockSignals( TRUE );
for ( ;; lit = lit->n ) {
if ( !lit ) {
triggerUpdate( FALSE );
break;
}
if ( down && lit == i ) {
setSelected( i, select );
triggerUpdate( FALSE );
break;
}
if ( !down && lit == oldCurrent ) {
setSelected( oldCurrent, select );
triggerUpdate( FALSE );
break;
}
setSelected( lit, select );
}
blockSignals( blocked );
emit selectionChanged();
} else if ( e->state() & ControlButton ) {
setSelected( i, !i->isSelected() );
d->pressedSelected = FALSE;
}
setCurrentItem( i );
}
break;
case Multi:
//d->current = i;
setSelected( i, !i->s );
setCurrentItem( i );
break;
case NoSelection:
setCurrentItem( i );
break;
}
} else {
bool unselect = TRUE;
if ( e->button() == LeftButton ) {
if ( d->selectionMode == Multi ||
d->selectionMode == Extended ) {
d->tmpCurrent = d->current;
d->current = 0;
updateItem( d->tmpCurrent );
if ( d->rubber )
delete d->rubber;
d->rubber = 0;
d->rubber = new TQRect( e->x(), e->y(), 0, 0 );
if ( d->selectionMode == Extended && !( e->state() & ControlButton ) )
selectAll( FALSE );
unselect = FALSE;
}
if ( unselect && ( e->button() == RightButton ||
( selectionMode() == Multi || selectionMode() == Extended ) ) )
clearSelection();
}
}
// for sanity, in case people are event-filtering or whatnot
delete d->scrollTimer;
d->scrollTimer = 0;
if ( i ) {
d->mousePressColumn = d->currentColumn;
d->mousePressRow = d->currentRow;
} else {
d->mousePressColumn = -1;
d->mousePressRow = -1;
}
d->ignoreMoves = FALSE;
d->pressedItem = i;
emit pressed( i );
emit pressed( i, e->globalPos() );
emit mouseButtonPressed( e->button(), i, e->globalPos() );
if ( e->button() == RightButton )
emit rightButtonPressed( i, e->globalPos() );
}
/*! \reimp */
void TQListBox::mouseReleaseEvent( TQMouseEvent *e )
{
if ( d->selectionMode == Extended &&
d->dragging ) {
d->dragging = FALSE;
if (d->current != d->pressedItem) {
updateSelection(); // when we drag, we get an update after we release
}
}
if ( d->rubber ) {
drawRubber();
delete d->rubber;
d->rubber = 0;
d->current = d->tmpCurrent;
updateItem( d->current );
}
if ( d->scrollTimer )
mouseMoveEvent( e );
delete d->scrollTimer;
d->scrollTimer = 0;
d->ignoreMoves = FALSE;
if ( d->selectionMode == Extended &&
d->current == d->pressedItem &&
d->pressedSelected && d->current ) {
bool block = signalsBlocked();
blockSignals( TRUE );
clearSelection();
blockSignals( block );
d->current->s = TRUE;
emit selectionChanged();
}
TQListBoxItem * i = itemAt( e->pos() );
bool emitClicked = d->mousePressColumn != -1 && d->mousePressRow != -1 || !d->pressedItem;
emitClicked = emitClicked && d->pressedItem == i;
d->pressedItem = 0;
d->mousePressRow = -1;
d->mousePressColumn = -1;
d->mouseInternalPress = FALSE;
if ( emitClicked ) {
emit clicked( i );
emit clicked( i, e->globalPos() );
emit mouseButtonClicked( e->button(), i, e->globalPos() );
if ( e->button() == RightButton )
emit rightButtonClicked( i, e->globalPos() );
}
}
/*! \reimp */
void TQListBox::mouseDoubleClickEvent( TQMouseEvent *e )
{
bool ok = TRUE;
TQListBoxItem *i = itemAt( e->pos() );
if ( !i || selectionMode() == NoSelection )
ok = FALSE;
d->ignoreMoves = TRUE;
if ( d->current && ok ) {
TQListBoxItem * i = d->current;
TQString tmp = d->current->text();
emit selected( currentItem() );
emit selected( i );
if ( !tmp.isNull() )
emit selected( tmp );
emit doubleClicked( i );
}
}
/*! \reimp */
void TQListBox::mouseMoveEvent( TQMouseEvent *e )
{
TQListBoxItem * i = itemAt( e->pos() );
if ( i != d->highlighted ) {
if ( i ) {
emit onItem( i );
} else {
emit onViewport();
}
d->highlighted = i;
}
if ( d->rubber ) {
TQRect r = d->rubber->normalize();
drawRubber();
d->rubber->setCoords( d->rubber->x(), d->rubber->y(), e->x(), e->y() );
doRubberSelection( r, d->rubber->normalize() );
drawRubber();
return;
}
if ( ( (e->state() & ( RightButton | LeftButton | MidButton ) ) == 0 ) ||
d->ignoreMoves )
return;
// hack to keep the combo (and what else?) working: if we get a
// move outside the listbox without having seen a press, discard
// it.
if ( !TQRect( 0, 0, visibleWidth(), visibleHeight() ).contains( e->pos() ) &&
( d->mousePressColumn < 0 && d->mousePressRow < 0 ||
(e->state() == NoButton && !d->pressedItem) ) )
return;
// figure out in what direction to drag-select and perhaps scroll
int dx = 0;
int x = e->x();
if ( x >= visibleWidth() ) {
x = visibleWidth()-1;
dx = 1;
} else if ( x < 0 ) {
x = 0;
dx = -1;
}
d->mouseMoveColumn = columnAt( x + contentsX() );
// sanitize mousePressColumn, if we got here without a mouse press event
if ( d->mousePressColumn < 0 && d->mouseMoveColumn >= 0 )
d->mousePressColumn = d->mouseMoveColumn;
if ( d->mousePressColumn < 0 && d->currentColumn >= 0 )
d->mousePressColumn = d->currentColumn;
// if it's beyond the last column, use the last one
if ( d->mouseMoveColumn < 0 )
d->mouseMoveColumn = dx >= 0 ? numColumns()-1 : 0;
// repeat for y
int dy = 0;
int y = e->y();
if ( y >= visibleHeight() ) {
y = visibleHeight()-1;
dy = 1;
} else if ( y < 0 ) {
y = 0;
dy = -1;
}
d->mouseMoveRow = rowAt( y + contentsY() );
if ( d->mousePressRow < 0 && d->mouseMoveRow >= 0 )
d->mousePressRow = d->mouseMoveRow;
if ( d->mousePressRow < 0 && d->currentRow >= 0 )
d->mousePressRow = d->currentRow;
if ( d->mousePressRow < 0 )
d->mousePressRow = rowAt( x + contentsX() );
d->scrollPos = TQPoint( dx, dy );
if ( ( dx || dy ) && !d->scrollTimer && e->state() == LeftButton && e->button() != LeftButton ) {
// start autoscrolling if necessary
d->scrollTimer = new TQTimer( this );
connect( d->scrollTimer, SIGNAL(timeout()),
this, SLOT(doAutoScroll()) );
d->scrollTimer->start( 100, FALSE );
doAutoScroll();
} else if ( !d->scrollTimer ) {
// or just select the retquired bits
updateSelection();
}
}
void TQListBox::updateSelection()
{
if ( d->mouseMoveColumn >= 0 && d->mouseMoveRow >= 0 &&
d->mousePressColumn >= 0 && d->mousePressRow >= 0 ) {
TQListBoxItem * i = item( d->mouseMoveColumn * numRows() +
d->mouseMoveRow );
#if defined(QT_ACCESSIBILITY_SUPPORT)
int ind = index(i);
#endif
if ( selectionMode() == Single || selectionMode() == NoSelection ) {
if ( i && ( d->mouseInternalPress || testWFlags(WType_Popup) ) )
setCurrentItem( i );
} else {
if ( d->selectionMode == Extended && (
( d->current == d->pressedItem && d->pressedSelected ) ||
(d->dirtyDrag && !d->dragging) ) ) {
if (d->dirtyDrag && !d->dragging) // emit after dragging stops
d->dirtyDrag = FALSE;
else
clearSelection(); // dont reset drag-selected items
d->pressedItem = 0;
if ( i && i->isSelectable() ) {
bool block = signalsBlocked();
blockSignals( TRUE );
i->s = TRUE;
blockSignals( block );
emit selectionChanged();
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), ind+1, TQAccessible::StateChanged );
TQAccessible::updateAccessibility( viewport(), 0, TQAccessible::Selection );
TQAccessible::updateAccessibility( viewport(), ind+1, TQAccessible::SelectionAdd );
#endif
}
triggerUpdate( FALSE );
} else {
int c = TQMIN( d->mouseMoveColumn, d->mousePressColumn );
int r = TQMIN( d->mouseMoveRow, d->mousePressRow );
int c2 = TQMAX( d->mouseMoveColumn, d->mousePressColumn );
int r2 = TQMAX( d->mouseMoveRow, d->mousePressRow );
bool changed = FALSE;
while( c <= c2 ) {
TQListBoxItem * i = item( c*numRows()+r );
int rtmp = r;
while( i && rtmp <= r2 ) {
if ( (bool)i->s != (bool)d->select && i->isSelectable() ) {
i->s = d->select;
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), ind+1, TQAccessible::StateChanged );
TQAccessible::updateAccessibility( viewport(), ind+1, d->select ? TQAccessible::SelectionAdd : TQAccessible::SelectionRemove );
#endif
i->dirty = TRUE;
d->dirtyDrag = changed = TRUE;
}
i = i->n;
rtmp++;
}
c++;
}
if ( changed ) {
if (!d->dragging) // emit after dragging stops instead
emit selectionChanged();
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), 0, TQAccessible::Selection );
#endif
triggerUpdate( FALSE );
}
}
if ( i )
setCurrentItem( i );
}
}
}
void TQListBox::repaintSelection()
{
if ( d->numColumns == 1 ) {
for ( uint i = topItem(); itemVisible( i ) && i < count(); ++i ) {
TQListBoxItem *it = item(i);
if ( !it )
break;
if ( it->isSelected() )
updateItem( it );
}
} else {
for ( uint i = 0; i < count(); ++i ) {
TQListBoxItem *it = item(i);
if ( !it )
break;
if ( it->isSelected() )
updateItem( it );
}
}
}
/*! \reimp
*/
void TQListBox::contentsContextMenuEvent( TQContextMenuEvent *e )
{
if ( !receivers( SIGNAL(contextMenuRequested(TQListBoxItem*,const TQPoint&)) ) ) {
e->ignore();
return;
}
if ( e->reason() == TQContextMenuEvent::Keyboard ) {
TQListBoxItem *i = item( currentItem() );
if ( i ) {
TQRect r = itemRect( i );
emit contextMenuRequested( i, mapToGlobal( r.topLeft() + TQPoint( width() / 2, r.height() / 2 ) ) );
}
} else {
TQListBoxItem * i = itemAt( contentsToViewport( e->pos() ) );
emit contextMenuRequested( i, e->globalPos() );
}
}
/*!\reimp
*/
void TQListBox::keyPressEvent( TQKeyEvent *e )
{
if ( ( e->key() == TQt::Key_Tab || e->key() == TQt::Key_Backtab )
&& e->state() & TQt::ControlButton )
e->ignore();
if ( count() == 0 ) {
e->ignore();
return;
}
TQGuardedPtr<TQListBox> selfCheck = this;
TQListBoxItem *old = d->current;
if ( !old ) {
setCurrentItem( d->head );
if ( d->selectionMode == Single )
setSelected( d->head, TRUE );
e->ignore();
return;
}
bool selectCurrent = FALSE;
switch ( e->key() ) {
case Key_Up:
{
d->currInputString = TQString::null;
if ( currentItem() > 0 ) {
setCurrentItem( currentItem() - 1 );
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
}
if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
d->selectAnchor = d->current;
}
break;
case Key_Down:
{
d->currInputString = TQString::null;
if ( currentItem() < (int)count() - 1 ) {
setCurrentItem( currentItem() + 1 );
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
}
if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
d->selectAnchor = d->current;
}
break;
case Key_Left:
{
d->currInputString = TQString::null;
if ( currentColumn() > 0 ) {
setCurrentItem( currentItem() - numRows() );
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
} else if ( numColumns() > 1 && currentItem() > 0 ) {
int row = currentRow();
setCurrentItem( currentRow() - 1 + ( numColumns() - 1 ) * numRows() );
if ( currentItem() == -1 )
setCurrentItem( row - 1 + ( numColumns() - 2 ) * numRows() );
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
} else {
TQApplication::sendEvent( horizontalScrollBar(), e );
}
if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
d->selectAnchor = d->current;
}
break;
case Key_Right:
{
d->currInputString = TQString::null;
if ( currentColumn() < numColumns()-1 ) {
int row = currentRow();
int i = currentItem();
TQListBoxItem *it = item( i + numRows() );
if ( !it )
it = item( count()-1 );
setCurrentItem( it );
if ( currentItem() == -1 ) {
if ( row < numRows() - 1 )
setCurrentItem( row + 1 );
else
setCurrentItem( i );
}
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
} else if ( numColumns() > 1 && currentRow() < numRows() ) {
if ( currentRow() + 1 < numRows() ) {
setCurrentItem( currentRow() + 1 );
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
}
} else {
TQApplication::sendEvent( horizontalScrollBar(), e );
}
if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
d->selectAnchor = d->current;
}
break;
case Key_Next:
{
d->currInputString = TQString::null;
int i = 0;
if ( numColumns() == 1 ) {
i = currentItem() + numItemsVisible();
i = i > (int)count() - 1 ? (int)count() - 1 : i;
setCurrentItem( i );
setBottomItem( i );
} else {
// I'm not sure about this behavior...
if ( currentRow() == numRows() - 1 )
i = currentItem() + numRows();
else
i = currentItem() + numRows() - currentRow() - 1;
i = i > (int)count() - 1 ? (int)count() - 1 : i;
setCurrentItem( i );
}
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
d->selectAnchor = d->current;
}
break;
case Key_Prior:
{
selectCurrent = TRUE;
d->currInputString = TQString::null;
int i;
if ( numColumns() == 1 ) {
i = currentItem() - numItemsVisible();
i = i < 0 ? 0 : i;
setCurrentItem( i );
setTopItem( i );
} else {
// I'm not sure about this behavior...
if ( currentRow() == 0 )
i = currentItem() - numRows();
else
i = currentItem() - currentRow();
i = i < 0 ? 0 : i;
setCurrentItem( i );
}
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
d->selectAnchor = d->current;
}
break;
case Key_Space:
{
selectCurrent = TRUE;
d->currInputString = TQString::null;
toggleCurrentItem();
if ( selectionMode() == Extended && d->current->isSelected() )
emit highlighted( currentItem() );
if (selfCheck && (!( e->state() & ShiftButton ) || !d->selectAnchor))
d->selectAnchor = d->current;
}
break;
case Key_Return:
case Key_Enter:
{
selectCurrent = TRUE;
d->currInputString = TQString::null;
if ( currentItem() >= 0 && selectionMode() != NoSelection ) {
TQString tmp = item( currentItem() )->text();
emit selected( currentItem());
emit selected( item( currentItem() ) );
if ( !tmp.isEmpty() )
emit selected( tmp );
emit returnPressed( item( currentItem() ) );
}
if (selfCheck && (!( e->state() & ShiftButton ) || !d->selectAnchor))
d->selectAnchor = d->current;
}
break;
case Key_Home:
{
selectCurrent = TRUE;
d->currInputString = TQString::null;
setCurrentItem( 0 );
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
d->selectAnchor = d->current;
}
break;
case Key_End:
{
selectCurrent = TRUE;
d->currInputString = TQString::null;
int i = (int)count() - 1;
setCurrentItem( i );
handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton );
if ( !( e->state() & ShiftButton ) || !d->selectAnchor )
d->selectAnchor = d->current;
}
break;
default:
{
if ( !e->text().isEmpty() && e->text()[ 0 ].isPrint() && count() ) {
int curItem = currentItem();
if ( curItem == -1 )
curItem = 0;
if ( !d->inputTimer->isActive() ) {
d->currInputString = e->text();
curItem = d->findItemByName( ++curItem, d->currInputString );
} else {
d->inputTimer->stop();
d->currInputString += e->text();
int oldCurItem = curItem;
curItem = d->findItemByName( curItem, d->currInputString );
if ( curItem < 0 ) {
curItem = d->findItemByName( ++oldCurItem, e->text() );
d->currInputString = e->text();
}
}
if ( curItem >= 0 )
setCurrentItem( curItem );
if ( curItem >= 0 && selectionMode() == TQListBox::Extended ) {
bool changed = FALSE;
bool block = signalsBlocked();
blockSignals( TRUE );
selectAll( FALSE );
blockSignals( block );
TQListBoxItem *i = item( curItem );
if ( !i->s && i->isSelectable() ) {
changed = TRUE;
i->s = TRUE;
updateItem( i );
}
if ( changed )
emit selectionChanged();
}
d->inputTimer->start( 400, TRUE );
} else {
d->currInputString = TQString::null;
if ( e->state() & ControlButton ) {
switch ( e->key() ) {
case Key_A:
selectAll( TRUE );
break;
}
} else {
e->ignore();
}
}
}
}
if (selfCheck && selectCurrent && selectionMode() == Single &&
d->current && !d->current->s ) {
updateItem( d->current );
setSelected( d->current, TRUE );
}
}
/*!\reimp
*/
void TQListBox::focusInEvent( TQFocusEvent* )
{
d->mousePressRow = -1;
d->mousePressColumn = -1;
d->inMenuMode = FALSE;
if ( TQFocusEvent::reason() != TQFocusEvent::Mouse && !d->current && d->head ) {
d->current = d->head;
TQListBoxItem *i = d->current;
TQString tmp;
if ( i )
tmp = i->text();
int tmp2 = index( i );
emit highlighted( i );
if ( !tmp.isNull() )
emit highlighted( tmp );
emit highlighted( tmp2 );
emit currentChanged( i );
}
if ( style().styleHint( TQStyle::SH_ItemView_ChangeHighlightOnFocus, this ) )
repaintSelection();
if ( d->current ) {
updateItem( currentItem() );
TQRect mfrect = itemRect( d->current );
if ( mfrect.isValid() )
setMicroFocusHint( mfrect.x(), mfrect.y(), mfrect.width(), mfrect.height(), FALSE );
}
}
/*!\reimp
*/
void TQListBox::focusOutEvent( TQFocusEvent* )
{
if (style().styleHint( TQStyle::SH_ItemView_ChangeHighlightOnFocus, this )) {
d->inMenuMode =
TQFocusEvent::reason() == TQFocusEvent::Popup ||
(qApp->focusWidget() && qApp->focusWidget()->inherits("TQMenuBar"));
if ( !d->inMenuMode )
repaintSelection();
}
if ( d->current )
updateItem( currentItem() );
}
/*!\reimp
*/
bool TQListBox::eventFilter( TQObject *o, TQEvent *e )
{
//### remove in 4.0
return TQScrollView::eventFilter( o, e );
}
/*!
Repaints the item at position \a index in the list.
*/
void TQListBox::updateItem( int index )
{
if ( index >= 0 )
updateItem( item( index ) );
}
/*!
\overload
Repaints the TQListBoxItem \a i.
*/
void TQListBox::updateItem( TQListBoxItem * i )
{
if ( !i )
return;
i->dirty = TRUE;
d->updateTimer->start( 0, TRUE );
}
/*!
\property TQListBox::selectionMode
\brief the selection mode of the list box
Sets the list box's selection mode, which may be one of \c Single
(the default), \c Extended, \c Multi or \c NoSelection.
\sa SelectionMode
*/
void TQListBox::setSelectionMode( SelectionMode mode )
{
if ( d->selectionMode == mode )
return;
if ( ( selectionMode() == Multi || selectionMode() == Extended )
&& ( mode == TQListBox::Single || mode == TQListBox::NoSelection ) ){
clearSelection();
if ( ( mode == TQListBox::Single ) && currentItem() )
setSelected( currentItem(), TRUE );
}
d->selectionMode = mode;
triggerUpdate( TRUE );
}
TQListBox::SelectionMode TQListBox::selectionMode() const
{
return d->selectionMode;
}
/*!
\obsolete
\property TQListBox::multiSelection
\brief whether or not the list box is in Multi selection mode
Consider using the \l TQListBox::selectionMode property instead of
this property.
When setting this property, Multi selection mode is used if set to TRUE and
to Single selection mode if set to FALSE.
When getting this property, TRUE is returned if the list box is in
Multi selection mode or Extended selection mode, and FALSE if it is
in Single selection mode or NoSelection mode.
\sa selectionMode
*/
bool TQListBox::isMultiSelection() const
{
return selectionMode() == Multi || selectionMode() == Extended;
}
void TQListBox::setMultiSelection( bool enable )
{
setSelectionMode( enable ? Multi : Single );
}
/*!
Toggles the selection status of currentItem() and repaints if the
list box is a \c Multi selection list box.
\sa setMultiSelection()
*/
void TQListBox::toggleCurrentItem()
{
if ( selectionMode() == Single ||
selectionMode() == NoSelection ||
!d->current )
return;
if ( d->current->s || d->current->isSelectable() ) {
d->current->s = !d->current->s;
emit selectionChanged();
#if defined(QT_ACCESSIBILITY_SUPPORT)
int ind = index( d->current );
TQAccessible::updateAccessibility( viewport(), 0, TQAccessible::Selection );
TQAccessible::updateAccessibility( viewport(), ind+1, TQAccessible::StateChanged );
TQAccessible::updateAccessibility( viewport(), ind+1, d->current->s ? TQAccessible::SelectionAdd : TQAccessible::SelectionRemove );
#endif
}
updateItem( d->current );
}
/*!
\overload
If \a select is TRUE the item at position \a index is selected;
otherwise the item is deselected.
*/
void TQListBox::setSelected( int index, bool select )
{
setSelected( item( index ), select );
}
/*!
Selects \a item if \a select is TRUE or unselects it if \a select
is FALSE, and repaints the item appropriately.
If the list box is a \c Single selection list box and \a select is
TRUE, setSelected() calls setCurrentItem().
If the list box is a \c Single selection list box, \a select is
FALSE, setSelected() calls clearSelection().
\sa setMultiSelection(), setCurrentItem(), clearSelection(), currentItem()
*/
void TQListBox::setSelected( TQListBoxItem * item, bool select )
{
if ( !item || !item->isSelectable() ||
(bool)item->s == select || d->selectionMode == NoSelection )
return;
int ind = index( item );
bool emitHighlighted = (d->current != item) ||
( item->s != (uint) select && select );
if ( selectionMode() == Single ) {
if ( d->current != item ) {
TQListBoxItem *o = d->current;
if ( d->current && d->current->s )
d->current->s = FALSE;
d->current = item;
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), ind+1, TQAccessible::Focus );
#endif
d->currentColumn = ind / numRows();
d->currentRow = ind % numRows();
if ( o )
updateItem( o );
}
}
item->s = (uint)select;
updateItem( item );
if ( d->selectionMode == Single && select ) {
emit selectionChanged( item );
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), ind+1, TQAccessible::StateChanged );
#endif
}
emit selectionChanged();
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), 0, TQAccessible::Selection );
if ( d->selectionMode != Single )
TQAccessible::updateAccessibility( viewport(), ind+1, select ? TQAccessible::SelectionAdd : TQAccessible::SelectionRemove );
#endif
if ( emitHighlighted ) {
TQString tmp;
if ( d->current )
tmp = d->current->text();
int tmp2 = index( d->current );
emit highlighted( d->current );
if ( !tmp.isNull() )
emit highlighted( tmp );
emit highlighted( tmp2 );
emit currentChanged( d->current );
}
}
/*!
Returns TRUE if item \a i is selected; otherwise returns FALSE.
*/
bool TQListBox::isSelected( int i ) const
{
if ( selectionMode() == Single && i != currentItem() )
return FALSE;
TQListBoxItem * lbi = item( i );
if ( !lbi )
return FALSE; // should not happen
return lbi->s;
}
/*!
\overload
Returns TRUE if item \a i is selected; otherwise returns FALSE.
*/
bool TQListBox::isSelected( const TQListBoxItem * i ) const
{
if ( !i )
return FALSE;
return i->s;
}
/*! Returns the selected item if the list box is in
single-selection mode and an item is selected.
If no items are selected or the list box is in another selection mode
this function returns 0.
\sa setSelected() setMultiSelection()
*/
TQListBoxItem* TQListBox::selectedItem() const
{
if ( d->selectionMode != Single )
return 0;
if ( isSelected( currentItem() ) )
return d->current;
return 0;
}
/*!
Deselects all items, if possible.
Note that a \c Single selection list box will automatically select
an item if it has keyboard focus.
*/
void TQListBox::clearSelection()
{
selectAll( FALSE );
}
/*!
In \c Multi and \c Extended modes, this function sets all items to
be selected if \a select is TRUE, and to be unselected if \a
select is FALSE.
In \c Single and \c NoSelection modes, this function only changes
the selection status of currentItem().
*/
void TQListBox::selectAll( bool select )
{
if ( selectionMode() == Multi || selectionMode() == Extended ) {
bool b = signalsBlocked();
blockSignals( TRUE );
for ( int i = 0; i < (int)count(); i++ )
setSelected( i, select );
blockSignals( b );
emit selectionChanged();
} else if ( d->current ) {
TQListBoxItem * i = d->current;
setSelected( i, select );
}
}
/*!
Inverts the selection. Only works in \c Multi and \c Extended
selection mode.
*/
void TQListBox::invertSelection()
{
if ( d->selectionMode == Single ||
d->selectionMode == NoSelection )
return;
bool b = signalsBlocked();
blockSignals( TRUE );
for ( int i = 0; i < (int)count(); i++ )
setSelected( i, !item( i )->isSelected() );
blockSignals( b );
emit selectionChanged();
}
/*!
\obsolete
Not used anymore; provided for binary compatibility
*/
void TQListBox::emitChangedSignal( bool )
{
}
/*! \reimp */
TQSize TQListBox::sizeHint() const
{
if ( cachedSizeHint().isValid() )
return cachedSizeHint();
constPolish();
doLayout();
int i=0;
while( i < 10 &&
i < (int)d->columnPos.size()-1 &&
d->columnPos[i] < 200 )
i++;
int x;
x = TQMIN( 200, d->columnPos[i] +
2 * style().pixelMetric( TQStyle::PM_DefaultFrameWidth ) );
x = TQMAX( 40, x );
i = 0;
while( i < 10 &&
i < (int)d->rowPos.size()-1 &&
d->rowPos[i] < 200 )
i++;
int y;
y = TQMIN( 200, d->rowPos[i] +
2 * style().pixelMetric( TQStyle::PM_DefaultFrameWidth ) );
y = TQMAX( 40, y );
TQSize s( x, y );
setCachedSizeHint( s );
return s;
}
/*!
\reimp
*/
TQSize TQListBox::minimumSizeHint() const
{
return TQScrollView::minimumSizeHint();
}
/*!
Ensures that a single paint event will occur at the end of the
current event loop iteration. If \a doLayout is TRUE, the layout
is also redone.
*/
void TQListBox::triggerUpdate( bool doLayout )
{
if ( doLayout )
d->layoutDirty = d->mustPaintAll = TRUE;
d->updateTimer->start( 0, TRUE );
}
void TQListBox::setColumnMode( LayoutMode mode )
{
if ( mode == Variable )
return;
d->rowModeWins = FALSE;
d->columnMode = mode;
triggerUpdate( TRUE );
}
void TQListBox::setColumnMode( int columns )
{
if ( columns < 1 )
columns = 1;
d->columnMode = FixedNumber;
d->numColumns = columns;
d->rowModeWins = FALSE;
triggerUpdate( TRUE );
}
void TQListBox::setRowMode( LayoutMode mode )
{
if ( mode == Variable )
return;
d->rowModeWins = TRUE;
d->rowMode = mode;
triggerUpdate( TRUE );
}
void TQListBox::setRowMode( int rows )
{
if ( rows < 1 )
rows = 1;
d->rowMode = FixedNumber;
d->numRows = rows;
d->rowModeWins = TRUE;
triggerUpdate( TRUE );
}
/*!
\property TQListBox::columnMode
\brief the column layout mode for this list box.
setColumnMode() sets the layout mode and adjusts the number of
displayed columns. The row layout mode automatically becomes \c
Variable, unless the column mode is \c Variable.
\sa setRowMode() columnMode() rowMode numColumns
*/
TQListBox::LayoutMode TQListBox::columnMode() const
{
if ( d->rowModeWins )
return Variable;
else
return d->columnMode;
}
/*!
\property TQListBox::rowMode
\brief the row layout mode for this list box
This property is normally \c Variable.
setRowMode() sets the layout mode and adjusts the number of
displayed rows. The column layout mode automatically becomes \c
Variable, unless the row mode is \c Variable.
\sa columnMode rowMode
*/
TQListBox::LayoutMode TQListBox::rowMode() const
{
if ( d->rowModeWins )
return d->rowMode;
else
return Variable;
}
/*!
\property TQListBox::numColumns
\brief the number of columns in the list box
This is normally 1, but can be different if \l
TQListBox::columnMode or \l TQListBox::rowMode has been set.
\sa columnMode rowMode numRows
*/
int TQListBox::numColumns() const
{
if ( count() == 0 )
return 0;
if ( !d->rowModeWins && d->columnMode == FixedNumber )
return d->numColumns;
doLayout();
return d->columnPos.size()-1;
}
/*!
\property TQListBox::numRows
\brief the number of rows in the list box.
This is equal to the number of items in the default single-column
layout, but can be different.
\sa columnMode rowMode numColumns
*/
int TQListBox::numRows() const
{
if ( count() == 0 )
return 0;
if ( d->rowModeWins && d->rowMode == FixedNumber )
return d->numRows;
doLayout();
return d->rowPos.size()-1;
}
/*!
This function does the hard layout work. You should never need to
call it.
*/
void TQListBox::doLayout() const
{
if ( !d->layoutDirty || d->resizeTimer->isActive() )
return;
constPolish();
int c = count();
switch( rowMode() ) {
case FixedNumber:
// columnMode() is known to be Variable
tryGeometry( d->numRows, (c+d->numRows-1)/d->numRows );
break;
case FitToHeight:
// columnMode() is known to be Variable
if ( d->head ) {
// this is basically the FitToWidth code, but edited to use rows.
int maxh = 0;
TQListBoxItem * i = d->head;
while ( i ) {
int h = i->height(this);
if ( maxh < h )
maxh = h;
i = i->n;
}
int vh = viewportSize( 1, 1 ).height();
do {
int rows = vh / maxh;
if ( rows > c )
rows = c;
if ( rows < 1 )
rows = 1;
if ( variableHeight() && rows < c ) {
do {
++rows;
tryGeometry( rows, (c+rows-1)/rows );
} while ( rows <= c &&
d->rowPos[(int)d->rowPos.size()-1] <= vh );
--rows;
}
tryGeometry( rows, (c+rows-1)/rows );
int nvh = viewportSize( d->columnPos[(int)d->columnPos.size()-1],
d->rowPos[(int)d->rowPos.size()-1] ).height();
if ( nvh < vh )
vh = nvh;
} while ( d->rowPos.size() > 2 &&
vh < d->rowPos[(int)d->rowPos.size()-1] );
} else {
tryGeometry( 1, 1 );
}
break;
case Variable:
if ( columnMode() == FixedNumber ) {
tryGeometry( (count()+d->numColumns-1)/d->numColumns,
d->numColumns );
} else if ( d->head ) { // FitToWidth, at least one item
int maxw = 0;
TQListBoxItem * i = d->head;
while ( i ) {
int w = i->width(this);
if ( maxw < w )
maxw = w;
i = i->n;
}
int vw = viewportSize( 1, 1 ).width();
do {
int cols = vw / maxw;
if ( cols > c )
cols = c;
if ( cols < 1 )
cols = 1;
if ( variableWidth() && cols < c ) {
do {
++cols;
tryGeometry( (c+cols-1)/cols, cols );
} while ( cols <= c &&
d->columnPos[(int)d->columnPos.size()-1] <= vw );
--cols;
}
tryGeometry( (c+cols-1)/cols, cols );
int nvw = viewportSize( d->columnPos[(int)d->columnPos.size()-1],
d->rowPos[(int)d->rowPos.size()-1] ).width();
if ( nvw < vw )
vw = nvw;
} while ( d->columnPos.size() > 2 &&
vw < d->columnPos[(int)d->columnPos.size()-1] );
} else {
tryGeometry( 1, 1 );
}
break;
}
d->layoutDirty = FALSE;
int w = d->columnPos[(int)d->columnPos.size()-1];
int h = d->rowPos[(int)d->rowPos.size()-1];
TQSize s( viewportSize( w, h ) );
w = TQMAX( w, s.width() );
d->columnPosOne = d->columnPos[1];
// extend the column for simple single-column listboxes
if ( columnMode() == FixedNumber && d->numColumns == 1 &&
d->columnPos[1] < w )
d->columnPos[1] = w;
((TQListBox *)this)->resizeContents( w, h );
}
/*!
Lay the items out in a \a columns by \a rows array. The array may
be too big: doLayout() is expected to call this with the right
values.
*/
void TQListBox::tryGeometry( int rows, int columns ) const
{
if ( columns < 1 )
columns = 1;
d->columnPos.resize( columns+1 );
if ( rows < 1 )
rows = 1;
d->rowPos.resize( rows+1 );
// funky hack I: dump the height/width of each column/row in
// {column,row}Pos for later conversion to positions.
int c;
for( c=0; c<=columns; c++ )
d->columnPos[c] = 0;
int r;
for( r=0; r<=rows; r++ )
d->rowPos[r] = 0;
r = c = 0;
TQListBoxItem * i = d->head;
while ( i && c < columns ) {
if ( i == d->current ) {
d->currentRow = r;
d->currentColumn = c;
}
int w = i->width(this);
if ( d->columnPos[c] < w )
d->columnPos[c] = w;
int h = i->height(this);
if ( d->rowPos[r] < h )
d->rowPos[r] = h;
i = i->n;
r++;
if ( r == rows ) {
r = 0;
c++;
}
}
// funky hack II: if not variable {width,height}, unvariablify it.
if ( !variableWidth() ) {
int w = 0;
for( c=0; c<columns; c++ )
if ( w < d->columnPos[c] )
w = d->columnPos[c];
for( c=0; c<columns; c++ )
d->columnPos[c] = w;
}
if ( !variableHeight() ) {
int h = 0;
for( r=0; r<rows; r++ )
if ( h < d->rowPos[r] )
h = d->rowPos[r];
for( r=0; r<rows; r++ )
d->rowPos[r] = h;
}
// repair the hacking.
int x = 0;
for( c=0; c<=columns; c++ ) {
int w = d->columnPos[c];
d->columnPos[c] = x;
x += w;
}
int y = 0;
for( r=0; r<=rows; r++ ) {
int h = d->rowPos[r];
d->rowPos[r] = y;
y += h;
}
}
/*!
Returns the row index of the current item, or -1 if no item is the
current item.
*/
int TQListBox::currentRow() const
{
if ( !d->current )
return -1;
if ( d->currentRow < 0 )
d->layoutDirty = TRUE;
if ( d->layoutDirty )
doLayout();
return d->currentRow;
}
/*!
Returns the column index of the current item, or -1 if no item is
the current item.
*/
int TQListBox::currentColumn() const
{
if ( !d->current )
return -1;
if ( d->currentColumn < 0 )
d->layoutDirty = TRUE;
if ( d->layoutDirty )
doLayout();
return d->currentColumn;
}
void TQListBox::setTopItem( int index )
{
if ( index >= (int)count() || count() == 0 )
return;
int col = index / numRows();
int y = d->rowPos[index-col*numRows()];
if ( d->columnPos[col] >= contentsX() &&
d->columnPos[col+1] <= contentsX() + visibleWidth() )
setContentsPos( contentsX(), y );
else
setContentsPos( d->columnPos[col], y );
}
/*!
Scrolls the list box so the item at position \a index in the list
is displayed in the bottom row of the list box.
\sa setTopItem()
*/
void TQListBox::setBottomItem( int index )
{
if ( index >= (int)count() || count() == 0 )
return;
int col = index / numRows();
int y = d->rowPos[1+index-col*numRows()] - visibleHeight();
if ( y < 0 )
y = 0;
if ( d->columnPos[col] >= contentsX() &&
d->columnPos[col+1] <= contentsX() + visibleWidth() )
setContentsPos( contentsX(), y );
else
setContentsPos( d->columnPos[col], y );
}
/*!
Returns the item at point \a p, specified in viewport coordinates,
or a 0 if there is no item at \a p.
Use contentsToViewport() to convert between widget coordinates and
viewport coordinates.
*/
TQListBoxItem * TQListBox::itemAt( const TQPoint& p ) const
{
if ( d->layoutDirty )
doLayout();
TQPoint np = p;
// take into acount frame margin to get to viewport
np -= viewport()->pos();
if (!viewport()->rect().contains(np))
return 0;
// take into account contents position
np = viewportToContents( np );
int x = np.x();
int y = np.y();
// return 0 when y is below the last row
if ( y > d->rowPos[ numRows() ] )
return 0;
int col = columnAt( x );
int row = rowAt( y );
TQListBoxItem *i = item( col * numRows() + row );
if ( i && numColumns() > 1 ) {
if ( d->columnPos[ col ] + i->width( this ) >= x )
return i;
} else {
if ( d->columnPos[ col + 1 ] >= x )
return i;
}
return 0;
}
/*!
Ensures that the current item is visible.
*/
void TQListBox::ensureCurrentVisible()
{
if ( !d->current )
return;
doLayout();
int row = currentRow();
int column = currentColumn();
int w = ( d->columnPos[column+1] - d->columnPos[column] ) / 2;
int h = ( d->rowPos[row+1] - d->rowPos[row] ) / 2;
// next four lines are Bad. they mean that for pure left-to-right
// languages, textual list box items are displayed better than
// before when there is little space. for non-textual items, or
// other languages, it means... that you really should have enough
// space in the first place :)
if ( numColumns() == 1 )
w = 0;
if ( w*2 > viewport()->width() )
w = viewport()->width()/2;
ensureVisible( d->columnPos[column] + w, d->rowPos[row] + h, w, h);
}
/*! \internal */
void TQListBox::doAutoScroll()
{
if ( d->scrollPos.x() < 0 ) {
// scroll left
int x = contentsX() - horizontalScrollBar()->lineStep();
if ( x < 0 )
x = 0;
if ( x != contentsX() ) {
d->mouseMoveColumn = columnAt( x );
updateSelection();
if ( x < contentsX() )
setContentsPos( x, contentsY() );
}
} else if ( d->scrollPos.x() > 0 ) {
// scroll right
int x = contentsX() + horizontalScrollBar()->lineStep();
if ( x + visibleWidth() > contentsWidth() )
x = contentsWidth() - visibleWidth();
if ( x != contentsX() ) {
d->mouseMoveColumn = columnAt( x + visibleWidth() - 1 );
updateSelection();
if ( x > contentsX() )
setContentsPos( x, contentsY() );
}
}
if ( d->scrollPos.y() < 0 ) {
// scroll up
int y = contentsY() - verticalScrollBar()->lineStep();
if ( y < 0 )
y = 0;
if ( y != contentsY() ) {
y = contentsY() - verticalScrollBar()->lineStep();
d->mouseMoveRow = rowAt( y );
updateSelection();
}
} else if ( d->scrollPos.y() > 0 ) {
// scroll down
int y = contentsY() + verticalScrollBar()->lineStep();
if ( y + visibleHeight() > contentsHeight() )
y = contentsHeight() - visibleHeight();
if ( y != contentsY() ) {
y = contentsY() + verticalScrollBar()->lineStep();
d->mouseMoveRow = rowAt(y + visibleHeight() - 1 );
updateSelection();
}
}
if ( d->scrollPos == TQPoint( 0, 0 ) ) {
delete d->scrollTimer;
d->scrollTimer = 0;
}
}
/*!
\property TQListBox::topItem
\brief the index of an item at the top of the screen.
When getting this property and the listbox has multiple columns,
an arbitrary item is selected and returned.
When setting this property, the list box is scrolled so the item
at position \e index in the list is displayed in the top row of
the list box.
*/
int TQListBox::topItem() const
{
doLayout();
// move rightwards to the best column
int col = columnAt( contentsX() );
int row = rowAt( contentsY() );
return col * numRows() + row;
}
/*!
\property TQListBox::variableHeight
\brief whether this list box has variable-height rows
When the list box has variable-height rows (the default), each row
is as high as the highest item in that row. When it has same-sized
rows, all rows are as high as the highest item in the list box.
\sa variableWidth
*/
bool TQListBox::variableHeight() const
{
return d->variableHeight;
}
void TQListBox::setVariableHeight( bool enable )
{
if ( (bool)d->variableHeight == enable )
return;
d->variableHeight = enable;
triggerUpdate( TRUE );
}
/*!
\property TQListBox::variableWidth
\brief whether this list box has variable-width columns
When the list box has variable-width columns, each column is as
wide as the widest item in that column. When it has same-sized
columns (the default), all columns are as wide as the widest item
in the list box.
\sa variableHeight
*/
bool TQListBox::variableWidth() const
{
return d->variableWidth;
}
void TQListBox::setVariableWidth( bool enable )
{
if ( (bool)d->variableWidth == enable )
return;
d->variableWidth = enable;
triggerUpdate( TRUE );
}
/*!
Repaints only what really needs to be repainted.
*/
void TQListBox::refreshSlot()
{
if ( d->mustPaintAll ||
d->layoutDirty ) {
d->mustPaintAll = FALSE;
bool currentItemVisible = itemVisible( currentItem() );
doLayout();
if ( hasFocus() &&
currentItemVisible &&
d->currentColumn >= 0 &&
d->currentRow >= 0 &&
( d->columnPos[d->currentColumn] < contentsX() ||
d->columnPos[d->currentColumn+1]>contentsX()+visibleWidth() ||
d->rowPos[d->currentRow] < contentsY() ||
d->rowPos[d->currentRow+1] > contentsY()+visibleHeight() ) )
ensureCurrentVisible();
viewport()->repaint( FALSE );
return;
}
TQRegion r;
int x = contentsX();
int y = contentsY();
int col = columnAt( x );
int row = rowAt( y );
int top = row;
while( col < (int)d->columnPos.size()-1 && d->columnPos[col+1] < x )
col++;
while( top < (int)d->rowPos.size()-1 && d->rowPos[top+1] < y )
top++;
TQListBoxItem * i = item( col * numRows() + row );
while ( i && (int)col < numColumns() &&
d->columnPos[col] < x + visibleWidth() ) {
int cw = d->columnPos[col+1] - d->columnPos[col];
while ( i && row < numRows() && d->rowPos[row] <
y + visibleHeight() ) {
if ( i->dirty )
r = r.unite( TQRect( d->columnPos[col] - x, d->rowPos[row] - y,
cw, d->rowPos[row+1] - d->rowPos[row] ) );
row++;
i = i->n;
}
col++;
if ( numColumns() > 1 ) {
row = top;
i = item( col * numRows() + row );
}
}
if ( r.isEmpty() )
viewport()->repaint( FALSE );
else
viewport()->repaint( r, FALSE );
}
/*! \reimp */
void TQListBox::viewportPaintEvent( TQPaintEvent * e )
{
doLayout();
TQWidget* vp = viewport();
TQPainter p( vp );
TQRegion r = e->region();
#if 0
{
// this stuff has been useful enough times that from now I'm
// leaving it in the source.
uint i = 0;
qDebug( "%s/%s: %i rects", className(), name(), r.rects().size() );
while( i < r.rects().size() ) {
qDebug( "rect %d: %d, %d, %d, %d", i,
r.rects()[i].left(), r.rects()[i].top(),
r.rects()[i].width(), r.rects()[i].height() );
i++;
}
qDebug( "" );
}
#endif
int x = contentsX();
int y = contentsY();
int w = vp->width();
int h = vp->height();
int col = columnAt( x );
int top = rowAt( y );
int row = top;
TQListBoxItem * i = item( col*numRows() + row );
const TQColorGroup & g = colorGroup();
p.setPen( g.text() );
p.setBackgroundColor( backgroundBrush().color() );
while ( i && (int)col < numColumns() && d->columnPos[col] < x + w ) {
int cw = d->columnPos[col+1] - d->columnPos[col];
while ( i && (int)row < numRows() && d->rowPos[row] < y + h ) {
int ch = d->rowPos[row+1] - d->rowPos[row];
TQRect itemRect( d->columnPos[col]-x, d->rowPos[row]-y, cw, ch );
TQRegion tempRegion( itemRect );
TQRegion itemPaintRegion( tempRegion.intersect( r ) );
if ( !itemPaintRegion.isEmpty() ) {
p.save();
p.setClipRegion( itemPaintRegion );
p.translate( d->columnPos[col]-x, d->rowPos[row]-y );
paintCell( &p, row, col );
p.restore();
r = r.subtract( itemPaintRegion );
}
row++;
if ( i->dirty ) {
// reset dirty flag only if the entire item was painted
if ( itemPaintRegion == TQRegion( itemRect ) )
i->dirty = FALSE;
}
i = i->n;
}
col++;
if ( numColumns() > 1 ) {
row = top;
i = item( col * numRows() + row );
}
}
if ( r.isEmpty() )
return;
p.setClipRegion( r );
p.fillRect( 0, 0, w, h, viewport()->backgroundBrush() );
}
/*!
Returns the height in pixels of the item with index \a index. \a
index defaults to 0.
If \a index is too large, this function returns 0.
*/
int TQListBox::itemHeight( int index ) const
{
if ( index >= (int)count() || index < 0 )
return 0;
int r = index % numRows();
return d->rowPos[r+1] - d->rowPos[r];
}
/*!
Returns the index of the column at \a x, which is in the listbox's
coordinates, not in on-screen coordinates.
If there is no column that spans \a x, columnAt() returns -1.
*/
int TQListBox::columnAt( int x ) const
{
if ( x < 0 )
return -1;
if ( !d->columnPos.size() )
return -1;
if ( x >= d->columnPos[(int)d->columnPos.size()-1 ] )
return numColumns() - 1;
int col = 0;
while( col < (int)d->columnPos.size()-1 && d->columnPos[col+1] < x )
col++;
return col;
}
/*!
Returns the index of the row at \a y, which is in the listbox's
coordinates, not in on-screen coordinates.
If there is no row that spans \a y, rowAt() returns -1.
*/
int TQListBox::rowAt( int y ) const
{
if ( y < 0 )
return -1;
// find the top item, use bsearch for speed
int l = 0;
int r = d->rowPos.size() - 2;
if ( r < 0 )
return -1;
if ( l <= d->rowPosCache && d->rowPosCache <= r ) {
if ( d->rowPos[ TQMAX( l, d->rowPosCache - 10 ) ] <= y
&& y <= d->rowPos[ TQMIN( r, d->rowPosCache + 10 ) ] ) {
l = TQMAX( l, d->rowPosCache - 10 );
r = TQMIN( r, d->rowPosCache + 10 );
}
}
int i = ( (l+r+1) / 2 );
while ( r - l ) {
if ( d->rowPos[i] > y )
r = i -1;
else
l = i;
i = ( (l+r+1) / 2 );
}
d->rowPosCache = i;
if ( d->rowPos[i] <= y && y <= d->rowPos[i+1] )
return i;
return d->count - 1;
}
/*!
Returns the rectangle on the screen that \a item occupies in
viewport()'s coordinates, or an invalid rectangle if \a item is 0
or is not currently visible.
*/
TQRect TQListBox::itemRect( TQListBoxItem *item ) const
{
if ( d->resizeTimer->isActive() )
return TQRect( 0, 0, -1, -1 );
if ( !item )
return TQRect( 0, 0, -1, -1 );
int i = index( item );
int col = i / numRows();
int row = i % numRows();
int x = d->columnPos[ col ] - contentsX();
int y = d->rowPos[ row ] - contentsY();
TQRect r( x, y, d->columnPos[ col + 1 ] - d->columnPos[ col ],
d->rowPos[ row + 1 ] - d->rowPos[ row ] );
if ( r.intersects( TQRect( 0, 0, visibleWidth(), visibleHeight() ) ) )
return r;
return TQRect( 0, 0, -1, -1 );
}
#ifndef QT_NO_COMPAT
/*!
\obsolete
Fix native TQt3 accidental conversion to tquit
13 years ago
Using this method is quite inefficient. We suggest to use insertItem()
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
13 years ago
for inserting and sort() afterwards.
Inserts \a lbi at its sorted position in the list box and returns the
position.
All items must be inserted with inSort() to maintain the sorting
order. inSort() treats any pixmap (or user-defined type) as
lexicographically less than any string.
\sa insertItem(), sort()
*/
int TQListBox::inSort( const TQListBoxItem * lbi )
{
qObsolete( "TQListBox", "inSort", "insertItem" );
if ( !lbi )
return -1;
TQListBoxItem * i = d->head;
int c = 0;
while( i && i->text() < lbi->text() ) {
i = i->n;
c++;
}
insertItem( lbi, c );
return c;
}
/*!
\obsolete
\overload
Fix native TQt3 accidental conversion to tquit
13 years ago
Using this method is quite inefficient. We suggest to use insertItem()
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
13 years ago
for inserting and sort() afterwards.
Inserts a new item of \a text at its sorted position in the list box and
returns the position.
All items must be inserted with inSort() to maintain the sorting
order. inSort() treats any pixmap (or user-defined type) as
lexicographically less than any string.
\sa insertItem(), sort()
*/
int TQListBox::inSort( const TQString& text )
{
qObsolete( "TQListBox", "inSort", "insertItem" );
return inSort( new TQListBoxText(text) );
}
#endif
/*! \reimp */
void TQListBox::resizeEvent( TQResizeEvent *e )
{
d->layoutDirty = ( d->layoutDirty ||
rowMode() == FitToHeight ||
columnMode() == FitToWidth );
if ( !d->layoutDirty && columnMode() == FixedNumber &&
d->numColumns == 1) {
int w = d->columnPosOne;
TQSize s( viewportSize( w, contentsHeight() ) );
w = TQMAX( w, s.width() );
d->columnPos[1] = TQMAX( w, d->columnPosOne );
resizeContents( d->columnPos[1], contentsHeight() );
}
if ( d->resizeTimer->isActive() )
d->resizeTimer->stop();
if ( d->rowMode == FixedNumber && d->columnMode == FixedNumber ) {
bool currentItemVisible = itemVisible( currentItem() );
doLayout();
TQScrollView::resizeEvent( e );
if ( currentItemVisible )
ensureCurrentVisible();
if ( d->current )
viewport()->repaint( itemRect( d->current ), FALSE );
} else if ( ( d->columnMode == FitToWidth || d->rowMode == FitToHeight ) && !(isVisible()) ) {
TQScrollView::resizeEvent( e );
} else if ( d->layoutDirty ) {
d->resizeTimer->start( 100, TRUE );
resizeContents( contentsWidth() - ( e->oldSize().width() - e->size().width() ),
contentsHeight() - ( e->oldSize().height() - e->size().height() ) );
TQScrollView::resizeEvent( e );
} else {
TQScrollView::resizeEvent( e );
}
}
/*!
\internal
*/
void TQListBox::adjustItems()
{
triggerUpdate( TRUE );
ensureCurrentVisible();
}
/*!
Provided for compatibility with the old TQListBox. We recommend
using TQListBoxItem::paint() instead.
Repaints the cell at \a row, \a col using painter \a p.
*/
void TQListBox::paintCell( TQPainter * p, int row, int col )
{
bool drawActiveSelection = hasFocus() || d->inMenuMode ||
!style().styleHint( TQStyle::SH_ItemView_ChangeHighlightOnFocus, this );
const TQColorGroup &g = ( drawActiveSelection ? colorGroup() : palette().inactive() );
int cw = d->columnPos[col+1] - d->columnPos[col];
int ch = d->rowPos[row+1] - d->rowPos[row];
TQListBoxItem * i = item( col*numRows()+row );
p->save();
if ( i->s ) {
if ( i->custom_highlight ) {
p->fillRect( 0, 0, cw, ch,
g.brush( TQPalette::backgroundRoleFromMode( viewport()->backgroundMode() ) ) );
p->setPen( g.highlightedText() );
p->setBackgroundColor( g.highlight() );
}
else if ( numColumns() == 1 ) {
p->fillRect( 0, 0, cw, ch, g.brush( TQColorGroup::Highlight ) );
p->setPen( g.highlightedText() );
p->setBackgroundColor( g.highlight() );
} else {
int iw = i->width( this );
p->fillRect( 0, 0, iw, ch, g.brush( TQColorGroup::Highlight ) );
p->fillRect( iw, 0, cw - iw + 1, ch,
g.brush( TQPalette::backgroundRoleFromMode( viewport()->backgroundMode() ) ) );
p->setPen( g.highlightedText() );
p->setBackgroundColor( g.highlight() );
}
} else {
p->fillRect( 0, 0, cw, ch,
g.brush( TQPalette::backgroundRoleFromMode( viewport()->backgroundMode() ) ) );
}
i->paint( p );
if ( d->current == i && hasFocus() && !i->custom_highlight ) {
if ( numColumns() > 1 )
cw = i->width( this );
style().drawPrimitive( TQStyle::PE_FocusRect, p, TQRect( 0, 0, cw, ch ), g,
TQStyle::Style_FocusAtBorder,
TQStyleOption(i->isSelected() ? g.highlight() : g.base() ) );
}
p->restore();
}
/*!
Returns the width of the widest item in the list box.
*/
long TQListBox::maxItemWidth() const
{
if ( d->layoutDirty )
doLayout();
long m = 0;
int i = d->columnPos.size();
while( i-- )
if ( m < d->columnPos[i] )
m = d->columnPos[i];
return m;
}
/*! \reimp */
void TQListBox::showEvent( TQShowEvent * )
{
d->ignoreMoves = FALSE;
d->mousePressRow = -1;
d->mousePressColumn = -1;
d->mustPaintAll = FALSE;
ensureCurrentVisible();
}
#ifndef QT_NO_COMPAT
/*!
\obsolete
Returns the vertical pixel-coordinate in \a *yPos, of the list box
item at position \a index in the list. Returns FALSE if the item is
outside the visible area.
*/
bool TQListBox::itemYPos( int index, int *yPos ) const
{
qObsolete( "TQListBox", "itemYPos" );
TQListBoxItem* i = item(index);
if ( !i )
return FALSE;
if ( yPos )
*yPos = i->y;
return TRUE;
}
#endif
/*!
\fn bool TQListBoxItem::isSelected() const
Returns TRUE if the item is selected; otherwise returns FALSE.
\sa TQListBox::isSelected(), isCurrent()
*/
/*!
\fn bool TQListBoxItem::selected() const
\obsolete
*/
/*!
Returns TRUE if the item is the current item; otherwise returns
FALSE.
\sa TQListBox::currentItem(), TQListBox::item(), isSelected()
*/
bool TQListBoxItem::isCurrent() const
{
return listBox() && listBox()->hasFocus() &&
listBox()->item( listBox()->currentItem() ) == this;
}
/*!
\fn bool TQListBoxItem::current() const
\obsolete
*/
/*!
\fn void TQListBox::centerCurrentItem()
\obsolete
This function does exactly the same as ensureCurrentVisible()
\sa TQListBox::ensureCurrentVisible()
*/
/*!
Returns a pointer to the list box containing this item.
*/
TQListBox * TQListBoxItem::listBox() const
{
return lbox;
}
/*!
Removes \a item from the list box and causes an update of the
screen display. The item is not deleted. You should normally not
need to call this function because TQListBoxItem::~TQListBoxItem()
calls it. The normal way to delete an item is with \c delete.
\sa TQListBox::insertItem()
*/
void TQListBox::takeItem( const TQListBoxItem * item )
{
if ( !item || d->clearing )
return;
d->cache = 0;
d->count--;
if ( item == d->last )
d->last = d->last->p;
if ( item->p && item->p->n == item )
item->p->n = item->n;
if ( item->n && item->n->p == item )
item->n->p = item->p;
if ( d->head == item ) {
d->head = item->n;
d->currentColumn = d->currentRow = -1;
}
if ( d->current == item ) {
d->current = item->n ? item->n : item->p;
TQListBoxItem *i = d->current;
TQString tmp;
if ( i )
tmp = i->text();
int tmp2 = index( i );
emit highlighted( i );
if ( !tmp.isNull() )
emit highlighted( tmp );
emit highlighted( tmp2 );
emit currentChanged( i );
}
if ( d->tmpCurrent == item )
d->tmpCurrent = d->current;
if ( d->selectAnchor == item )
d->selectAnchor = d->current;
if ( item->s )
emit selectionChanged();
((TQListBoxItem *)item)->lbox = 0;
triggerUpdate( TRUE );
}
/*!
\internal
Finds the next item after start beginning with \a text.
*/
int TQListBoxPrivate::findItemByName( int start, const TQString &text )
{
if ( start < 0 || (uint)start >= listBox->count() )
start = 0;
TQString match = text.lower();
if ( match.length() < 1 )
return start;
TQString curText;
int item = start;
do {
curText = listBox->text( item ).lower();
if ( curText.startsWith( match ) )
return item;
item++;
if ( (uint)item == listBox->count() )
item = 0;
} while ( item != start );
return -1;
}
/*!
\internal --- obsolete!
*/
void TQListBox::clearInputString()
{
d->currInputString = TQString::null;
}
/*!
Finds the first list box item that has the text \a text and
returns it, or returns 0 of no such item could be found.
The search starts from the current item if the current item exists,
otherwise it starts from the first list box item.
If \c ComparisonFlags are specified in \a compare then these flags
are used, otherwise the default is a case-insensitive, "begins
with" search.
\sa TQt::StringComparisonMode
*/
TQListBoxItem *TQListBox::findItem( const TQString &text, ComparisonFlags compare ) const
{
if ( text.isEmpty() )
return 0;
if ( compare == CaseSensitive || compare == 0 )
compare |= ExactMatch;
TQString itmtxt;
TQString comtxt = text;
if ( ! (compare & CaseSensitive ) )
comtxt = text.lower();
TQListBoxItem *item;
if ( d->current )
item = d->current;
else
item = d->head;
TQListBoxItem *beginsWithItem = 0;
TQListBoxItem *endsWithItem = 0;
TQListBoxItem *containsItem = 0;
if ( item ) {
for ( ; item; item = item->n ) {
if ( ! (compare & CaseSensitive) )
itmtxt = item->text().lower();
else
itmtxt = item->text();
if ( compare & ExactMatch && itmtxt == comtxt )
return item;
if ( compare & BeginsWith && !beginsWithItem && itmtxt.startsWith( comtxt ) )
beginsWithItem = containsItem = item;
if ( compare & EndsWith && !endsWithItem && itmtxt.endsWith( comtxt ) )
endsWithItem = containsItem = item;
if ( compare & Contains && !containsItem && itmtxt.contains( comtxt ) )
containsItem = item;
}
if ( d->current && d->head ) {
item = d->head;
for ( ; item && item != d->current; item = item->n ) {
if ( ! (compare & CaseSensitive) )
itmtxt = item->text().lower();
else
itmtxt = item->text();
if ( compare & ExactMatch && itmtxt == comtxt )
return item;
if ( compare & BeginsWith && !beginsWithItem && itmtxt.startsWith( comtxt ) )
beginsWithItem = containsItem = item;
if ( compare & EndsWith && !endsWithItem && itmtxt.endsWith( comtxt ) )
endsWithItem = containsItem = item;
if ( compare & Contains && !containsItem && itmtxt.contains( comtxt ) )
containsItem = item;
}
}
}
// Obey the priorities
if ( beginsWithItem )
return beginsWithItem;
else if ( endsWithItem )
return endsWithItem;
else if ( containsItem )
return containsItem;
return 0;
}
/*!
\internal
*/
void TQListBox::drawRubber()
{
if ( !d->rubber )
return;
if ( !d->rubber->width() && !d->rubber->height() )
return;
TQPainter p( viewport() );
p.setRasterOp( NotROP );
style().drawPrimitive( TQStyle::PE_RubberBand, &p, d->rubber->normalize(),
colorGroup() );
p.end();
}
/*!
\internal
*/
void TQListBox::doRubberSelection( const TQRect &old, const TQRect &rubber )
{
TQListBoxItem *i = d->head;
TQRect ir, pr;
bool changed = FALSE;
for ( ; i; i = i->n ) {
ir = itemRect( i );
if ( ir == TQRect( 0, 0, -1, -1 ) )
continue;
if ( i->isSelected() && !ir.intersects( rubber ) && ir.intersects( old ) ) {
i->s = FALSE;
pr = pr.unite( ir );
changed = TRUE;
} else if ( !i->isSelected() && ir.intersects( rubber ) ) {
if ( i->isSelectable() ) {
i->s = TRUE;
pr = pr.unite( ir );
changed = TRUE;
}
}
}
if ( changed ) {
emit selectionChanged();
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), 0, TQAccessible::Selection );
#endif
}
viewport()->repaint( pr, TRUE );
}
/*!
Returns TRUE if the user is selecting items using a rubber band
rectangle; otherwise returns FALSE.
*/
bool TQListBox::isRubberSelecting() const
{
return d->rubber != 0;
}
/*!
Returns the item that comes after this in the list box. If this is
the last item, 0 is returned.
\sa prev()
*/
TQListBoxItem *TQListBoxItem::next() const
{
return n;
}
/*!
Returns the item which comes before this in the list box. If this
is the first item, 0 is returned.
\sa next()
*/
TQListBoxItem *TQListBoxItem::prev() const
{
return p;
}
/*!
Returns the first item in this list box. If the list box is empty,
returns 0.
*/
TQListBoxItem *TQListBox::firstItem() const
{
return d->head;
}
#if defined(Q_C_CALLBACKS)
extern "C" {
#endif
#ifdef Q_OS_TEMP
static int _cdecl cmpListBoxItems( const void *n1, const void *n2 )
#else
static int cmpListBoxItems( const void *n1, const void *n2 )
#endif
{
if ( !n1 || !n2 )
return 0;
TQListBoxPrivate::SortableItem *i1 = (TQListBoxPrivate::SortableItem *)n1;
TQListBoxPrivate::SortableItem *i2 = (TQListBoxPrivate::SortableItem *)n2;
return i1->item->text().localeAwareCompare( i2->item->text() );
}
#if defined(Q_C_CALLBACKS)
}
#endif
/*!
If \a ascending is TRUE sorts the items in ascending order;
otherwise sorts in descending order.
To compare the items, the text (TQListBoxItem::text()) of the items
is used.
*/
void TQListBox::sort( bool ascending )
{
if ( count() == 0 )
return;
d->cache = 0;
TQListBoxPrivate::SortableItem *items = new TQListBoxPrivate::SortableItem[ count() ];
TQListBoxItem *item = d->head;
int i = 0;
for ( ; item; item = item->n )
items[ i++ ].item = item;
qsort( items, count(), sizeof( TQListBoxPrivate::SortableItem ), cmpListBoxItems );
TQListBoxItem *prev = 0;
item = 0;
if ( ascending ) {
for ( i = 0; i < (int)count(); ++i ) {
item = items[ i ].item;
if ( item ) {
item->p = prev;
item->dirty = TRUE;
if ( item->p )
item->p->n = item;
item->n = 0;
}
if ( i == 0 )
d->head = item;
prev = item;
}
} else {
for ( i = (int)count() - 1; i >= 0 ; --i ) {
item = items[ i ].item;
if ( item ) {
item->p = prev;
item->dirty = TRUE;
if ( item->p )
item->p->n = item;
item->n = 0;
}
if ( i == (int)count() - 1 )
d->head = item;
prev = item;
}
}
d->last = item;
delete [] items;
// We have to update explicitly in case the current "vieport" overlaps the
// new viewport we set (starting at (0,0)).
bool haveToUpdate = contentsX() < visibleWidth() || contentsY() < visibleHeight();
setContentsPos( 0, 0 );
if ( haveToUpdate )
updateContents( 0, 0, visibleWidth(), visibleHeight() );
}
void TQListBox::handleItemChange( TQListBoxItem *old, bool shift, bool control )
{
if ( d->selectionMode == Single ) {
// nothing
} else if ( d->selectionMode == Extended ) {
if ( shift ) {
selectRange( d->selectAnchor ? d->selectAnchor : old,
d->current, FALSE, TRUE, (d->selectAnchor && !control) ? TRUE : FALSE );
} else if ( !control ) {
bool block = signalsBlocked();
blockSignals( TRUE );
selectAll( FALSE );
blockSignals( block );
setSelected( d->current, TRUE );
}
} else if ( d->selectionMode == Multi ) {
if ( shift )
selectRange( old, d->current, TRUE, FALSE );
}
}
void TQListBox::selectRange( TQListBoxItem *from, TQListBoxItem *to, bool invert, bool includeFirst, bool clearSel )
{
if ( !from || !to )
return;
if ( from == to && !includeFirst )
return;
TQListBoxItem *i = 0;
int index =0;
int f_idx = -1, t_idx = -1;
for ( i = d->head; i; i = i->n, index++ ) {
if ( i == from )
f_idx = index;
if ( i == to )
t_idx = index;
if ( f_idx != -1 && t_idx != -1 )
break;
}
if ( f_idx > t_idx ) {
i = from;
from = to;
to = i;
if ( !includeFirst )
to = to->prev();
} else {
if ( !includeFirst )
from = from->next();
}
bool changed = FALSE;
if ( clearSel ) {
for ( i = d->head; i && i != from; i = i->n ) {
if ( i->s ) {
i->s = FALSE;
changed = TRUE;
updateItem( i );
}
}
for ( i = to->n; i; i = i->n ) {
if ( i->s ) {
i->s = FALSE;
changed = TRUE;
updateItem( i );
}
}
}
for ( i = from; i; i = i->next() ) {
if ( !invert ) {
if ( !i->s && i->isSelectable() ) {
i->s = TRUE;
changed = TRUE;
updateItem( i );
}
} else {
bool sel = !i->s;
if ( (bool)i->s != sel && sel && i->isSelectable() || !sel ) {
i->s = sel;
changed = TRUE;
updateItem( i );
}
}
if ( i == to )
break;
}
if ( changed ) {
emit selectionChanged();
#if defined(QT_ACCESSIBILITY_SUPPORT)
TQAccessible::updateAccessibility( viewport(), 0, TQAccessible::Selection );
#endif
}
}
/*! \reimp */
void TQListBox::windowActivationChange( bool oldActive )
{
if ( oldActive && d->scrollTimer )
d->scrollTimer->stop();
if ( palette().active() != palette().inactive() )
viewport()->update();
TQScrollView::windowActivationChange( oldActive );
}
int TQListBoxItem::RTTI = 0;
/*!
Returns 0.
Make your derived classes return their own values for rtti(), and
you can distinguish between listbox items. You should use values
greater than 1000 preferably a large random number, to allow for
extensions to this class.
*/
int TQListBoxItem::rtti() const
{
return RTTI;
}
#endif // QT_NO_LISTBOX