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qt3/src/widgets/qheader.cpp

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Add Qt3 development HEAD version
14 years ago
/****************************************************************************
**
** Implementation of QHeader widget class (table header)
**
** Created : 961105
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the widgets module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file. Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#include "qheader.h"
#ifndef QT_NO_HEADER
#include "qpainter.h"
#include "qdrawutil.h"
#include "qpixmap.h"
#include "qbitarray.h"
#include "qptrvector.h"
#include "qapplication.h"
#include "qstyle.h"
class QHeaderData
{
public:
QHeaderData(int n)
{
count = n;
labels.setAutoDelete( TRUE );
iconsets.setAutoDelete( TRUE );
sizes.resize(n);
positions.resize(n);
labels.resize(n);
if ( int( iconsets.size() ) < n )
iconsets.resize( n );
i2s.resize(n);
s2i.resize(n);
clicks.resize(n);
resize.resize(n);
int p =0;
for ( int i = 0; i < n; i ++ ) {
sizes[i] = 88;
i2s[i] = i;
s2i[i] = i;
positions[i] = p;
p += sizes[i];
}
clicks_default = TRUE;
resize_default = TRUE;
clicks.fill( clicks_default );
resize.fill( resize_default );
move = TRUE;
sortSection = -1;
sortDirection = TRUE;
positionsDirty = TRUE;
lastPos = 0;
fullSize = -2;
pos_dirty = FALSE;
is_a_table_header = FALSE;
focusIdx = 0;
}
QMemArray<QCOORD> sizes;
int height; // we abuse the heights as widths for vertical layout
bool heightDirty;
QMemArray<QCOORD> positions; // sorted by index
QPtrVector<QString> labels;
QPtrVector<QIconSet> iconsets;
QMemArray<int> i2s;
QMemArray<int> s2i;
QBitArray clicks;
QBitArray resize;
uint move : 1;
uint clicks_default : 1; // default value for new clicks bits
uint resize_default : 1; // default value for new resize bits
uint pos_dirty : 1;
uint is_a_table_header : 1;
bool sortDirection;
bool positionsDirty;
int sortSection;
int count;
int lastPos;
int fullSize;
int focusIdx;
int pressDelta;
int sectionAt( int pos ) {
// positions is sorted by index, not by section
if ( !count )
return -1;
int l = 0;
int r = count - 1;
int i = ( (l+r+1) / 2 );
while ( r - l ) {
if ( positions[i] > pos )
r = i -1;
else
l = i;
i = ( (l+r+1) / 2 );
}
if ( positions[i] <= pos && pos <= positions[i] + sizes[ i2s[i] ] )
return i2s[i];
return -1;
}
};
/*!
\class QHeader qheader.h
\brief The QHeader class provides a header row or column, e.g. for
tables and listviews.
\ingroup advanced
This class provides a header, e.g. a vertical header to display
row labels, or a horizontal header to display column labels. It is
used by QTable and QListView for example.
A header is composed of one or more \e sections, each of which can
display a text label and an \link QIconSet iconset\endlink. A sort
indicator (an arrow) can also be displayed using
setSortIndicator().
Sections are added with addLabel() and removed with removeLabel().
The label and iconset are set in addLabel() and can be changed
later with setLabel(). Use count() to retrieve the number of
sections in the header.
The orientation of the header is set with setOrientation(). If
setStretchEnabled() is TRUE, the sections will expand to take up
the full width (height for vertical headers) of the header. The
user can resize the sections manually if setResizeEnabled() is
TRUE. Call adjustHeaderSize() to have the sections resize to
occupy the full width (or height).
A section can be moved with moveSection(). If setMovingEnabled()
is TRUE (the default)the user may drag a section from one position
to another. If a section is moved, the index positions at which
sections were added (with addLabel()), may not be the same after the
move. You don't have to worry about this in practice because the
QHeader API works in terms of section numbers, so it doesn't matter
where a particular section has been moved to.
If you want the current index position of a section call
mapToIndex() giving it the section number. (This is the number
returned by the addLabel() call which created the section.) If you
want to get the section number of a section at a particular index
position call mapToSection() giving it the index number.
Here's an example to clarify mapToSection() and mapToIndex():
\table
\header \i41 Index positions
\row \i 0 \i 1 \i 2 \i 3
\header \i41 Original section ordering
\row \i Sect 0 \i Sect 1 \i Sect 2 \i Sect 3
\header \i41 Ordering after the user moves a section
\row \i Sect 0 \i Sect 2 \i Sect 3 \i Sect 1
\endtable
\table
\header \i \e k \i mapToSection(\e k) \i mapToIndex(\e k)
\row \i 0 \i 0 \i 0
\row \i 1 \i 2 \i 3
\row \i 2 \i 3 \i 1
\row \i 3 \i 1 \i 2
\endtable
In the example above, if we wanted to find out which section is at
index position 3 we'd call mapToSection(3) and get a section
number of 1 since section 1 was moved. Similarly, if we wanted to
know which index position section 2 occupied we'd call
mapToIndex(2) and get an index of 1.
QHeader provides the clicked(), pressed() and released() signals.
If the user changes the size of a section, the sizeChange() signal
is emitted. If you want to have a sizeChange() signal emitted
continuously whilst the user is resizing (rather than just after
the resizing is finished), use setTracking(). If the user moves a
section the indexChange() signal is emitted.
<img src=qheader-m.png> <img src=qheader-w.png>
\sa QListView QTable
*/
/*!
Constructs a horizontal header called \a name, with parent \a
parent.
*/
QHeader::QHeader( QWidget *parent, const char *name )
: QWidget( parent, name, WStaticContents )
{
orient = Horizontal;
init( 0 );
}
/*!
Constructs a horizontal header called \a name, with \a n sections
and parent \a parent.
*/
QHeader::QHeader( int n, QWidget *parent, const char *name )
: QWidget( parent, name, WStaticContents )
{
orient = Horizontal;
init( n );
}
/*!
Destroys the header and all its sections.
*/
QHeader::~QHeader()
{
delete d;
d = 0;
}
/*! \reimp
*/
void QHeader::showEvent( QShowEvent *e )
{
calculatePositions();
QWidget::showEvent( e );
}
/*!
\fn void QHeader::sizeChange( int section, int oldSize, int newSize )
This signal is emitted when the user has changed the size of a \a
section from \a oldSize to \a newSize. This signal is typically
connected to a slot that repaints the table or list that contains
the header.
*/
/*!
\fn void QHeader::clicked( int section )
If isClickEnabled() is TRUE, this signal is emitted when the user
clicks section \a section.
\sa pressed(), released()
*/
/*!
\fn void QHeader::pressed( int section )
This signal is emitted when the user presses section \a section
down.
\sa released()
*/
/*!
\fn void QHeader::released( int section )
This signal is emitted when section \a section is released.
\sa pressed()
*/
/*!
\fn void QHeader::indexChange( int section, int fromIndex, int toIndex )
This signal is emitted when the user moves section \a section from
index position \a fromIndex, to index position \a toIndex.
*/
/*!
\fn void QHeader::moved( int fromIndex, int toIndex )
\obsolete
Use indexChange() instead.
This signal is emitted when the user has moved the section which
is displayed at the index \a fromIndex to the index \a toIndex.
*/
/*!
\fn void QHeader::sectionClicked( int index )
\obsolete
Use clicked() instead.
This signal is emitted when a part of the header is clicked. \a
index is the index at which the section is displayed.
In a list view this signal would typically be connected to a slot
that sorts the specified column (or row).
*/
/*! \fn int QHeader::cellSize( int ) const
\obsolete
Use sectionSize() instead.
Returns the size in pixels of the section that is displayed at
the index \a i.
*/
/*!
\fn void QHeader::sectionHandleDoubleClicked( int section )
This signal is emitted when the user doubleclicks on the edge
(handle) of section \a section.
*/
/*!
\obsolete
Use sectionPos() instead.
Returns the position in pixels of the section that is displayed at the
index \a i. The position is measured from the start of the header.
*/
int QHeader::cellPos( int i ) const
{
if ( i == count() && i > 0 )
return d->positions[i-1] + d->sizes[d->i2s[i-1]]; // compatibility
return sectionPos( mapToSection(i) );
}
/*!
\property QHeader::count
\brief the number of sections in the header
*/
int QHeader::count() const
{
return d->count;
}
/*!
\property QHeader::tracking
\brief whether the sizeChange() signal is emitted continuously
If tracking is on, the sizeChange() signal is emitted continuously
while the mouse is moved (i.e. when the header is resized),
otherwise it is only emitted when the mouse button is released at
the end of resizing.
Tracking defaults to FALSE.
*/
/*
Initializes with \a n columns.
*/
void QHeader::init( int n )
{
state = Idle;
cachedPos = 0; // unused
d = new QHeaderData( n );
d->height = 0;
d->heightDirty = TRUE;
offs = 0;
if( reverse() )
offs = d->lastPos - width();
oldHandleIdx = oldHIdxSize = handleIdx = 0;
setMouseTracking( TRUE );
trackingIsOn = FALSE;
setBackgroundMode( PaletteButton );
setSizePolicy( QSizePolicy( QSizePolicy::Preferred, QSizePolicy::Fixed ) );
}
/*!
\property QHeader::orientation
\brief the header's orientation
The orientation is either \c Vertical or \c Horizontal (the
default).
Call setOrientation() before adding labels if you don't provide a
size parameter otherwise the sizes will be incorrect.
*/
void QHeader::setOrientation( Orientation orientation )
{
if ( orient == orientation )
return;
orient = orientation;
if ( orient == Horizontal )
setSizePolicy( QSizePolicy( QSizePolicy::Preferred, QSizePolicy::Fixed ) );
else
setSizePolicy( QSizePolicy( QSizePolicy::Fixed, QSizePolicy::Preferred ) );
update();
updateGeometry();
}
/*
Paints a rectangle starting at \a p, with length \s.
*/
void QHeader::paintRect( int p, int s )
{
QPainter paint( this );
paint.setPen( QPen( black, 1, DotLine ) );
if ( reverse() )
paint.drawRect( p - s, 3, s, height() - 5 );
else if ( orient == Horizontal )
paint.drawRect( p, 3, s, height() - 5 );
else
paint.drawRect( 3, p, height() - 5, s );
}
/*
Marks the division line at \a idx.
*/
void QHeader::markLine( int idx )
{
QPainter paint( this );
paint.setPen( QPen( black, 1, DotLine ) );
int MARKSIZE = style().pixelMetric( QStyle::PM_HeaderMarkSize );
int p = pPos( idx );
int x = p - MARKSIZE/2;
int y = 2;
int x2 = p + MARKSIZE/2;
int y2 = height() - 3;
if ( orient == Vertical ) {
int t = x; x = y; y = t;
t = x2; x2 = y2; y2 = t;
}
paint.drawLine( x, y, x2, y );
paint.drawLine( x, y+1, x2, y+1 );
paint.drawLine( x, y2, x2, y2 );
paint.drawLine( x, y2-1, x2, y2-1 );
paint.drawLine( x, y, x, y2 );
paint.drawLine( x+1, y, x+1, y2 );
paint.drawLine( x2, y, x2, y2 );
paint.drawLine( x2-1, y, x2-1, y2 );
}
/*
Removes the mark at the division line at \a idx.
*/
void QHeader::unMarkLine( int idx )
{
if ( idx < 0 )
return;
int MARKSIZE = style().pixelMetric( QStyle::PM_HeaderMarkSize );
int p = pPos( idx );
int x = p - MARKSIZE/2;
int y = 2;
int x2 = p + MARKSIZE/2;
int y2 = height() - 3;
if ( orient == Vertical ) {
int t = x; x = y; y = t;
t = x2; x2 = y2; y2 = t;
}
repaint( x, y, x2-x+1, y2-y+1 );
}
/*! \fn int QHeader::cellAt( int ) const
\obsolete
Use sectionAt() instead.
Returns the index at which the section is displayed, which contains
\a pos in widget coordinates, or -1 if \a pos is outside the header
sections.
*/
/*
Tries to find a line that is not a neighbor of \c handleIdx.
*/
int QHeader::findLine( int c )
{
int i = 0;
if ( c > d->lastPos || (reverse() && c < 0 )) {
return d->count;
} else {
int section = sectionAt( c );
if ( section < 0 )
return handleIdx;
i = d->s2i[section];
}
int MARKSIZE = style().pixelMetric( QStyle::PM_HeaderMarkSize );
if ( i == handleIdx )
return i;
if ( i == handleIdx - 1 && pPos( handleIdx ) - c > MARKSIZE/2 )
return i;
if ( i == handleIdx + 1 && c - pPos( i ) > MARKSIZE/2 )
return i + 1;
if ( c - pPos( i ) > pSize( i ) / 2 )
return i + 1;
else
return i;
}
/*!
Returns the handle at position \a p, or -1 if there is no handle at \a p.
*/
int QHeader::handleAt(int p)
{
int section = d->sectionAt( p );
if ( section >= 0 ) {
int GripMargin = (bool)d->resize[ section ] ?
style().pixelMetric( QStyle::PM_HeaderGripMargin ) : 0;
int index = d->s2i[section];
if ( (index > 0 && p < d->positions[index] + GripMargin) ||
(p > d->positions[index] + d->sizes[section] - GripMargin) ) {
if ( index > 0 && p < d->positions[index] + GripMargin )
section = d->i2s[--index];
// dont show icon if streaching is enabled it is at the end of the last section
if ( d->resize.testBit(section) && (d->fullSize == -2 || index != count() - 1)) {
return section;
}
}
}
return -1;
}
/*!
\obsolete
Use moveSection() instead.
Moves the section that is currently displayed at index \a fromIdx
to index \a toIdx.
*/
void QHeader::moveCell( int fromIdx, int toIdx )
{
moveSection( mapToSection(fromIdx), toIdx );
}
/*!
Move and signal and repaint.
*/
void QHeader::handleColumnMove( int fromIdx, int toIdx )
{
int s = d->i2s[fromIdx];
if ( fromIdx < toIdx )
toIdx++; //Convert to
QRect r = sRect( fromIdx );
r |= sRect( toIdx );
moveSection( s, toIdx );
update( r );
emit moved( fromIdx, toIdx );
emit indexChange( s, fromIdx, toIdx );
}
/*!
\reimp
*/
void QHeader::keyPressEvent( QKeyEvent *e )
{
int i = d->focusIdx;
if ( e->key() == Key_Space ) {
//don't do it if we're doing something with the mouse
if ( state == Idle && d->clicks[ d->i2s[d->focusIdx] ] ) {
handleIdx = i;
state = Pressed;
repaint( sRect( handleIdx ) );
emit pressed( d->i2s[i] );
}
Fix build warnings Thanks to Bruce Sass for the patch!
12 years ago
} else if ( ( orientation() == Horizontal &&
(e->key() == Key_Right || e->key() == Key_Left) )
|| ( orientation() == Vertical &&
(e->key() == Key_Up || e->key() == Key_Down) ) ) {
Add Qt3 development HEAD version
14 years ago
int dir = e->key() == Key_Right || e->key() == Key_Down ? 1 : -1;
int s = d->i2s[i];
if ( e->state() & ControlButton && d->resize[s] ) {
//resize
int step = e->state() & ShiftButton ? dir : 10*dir;
int c = d->positions[i] + d->sizes[s] + step;
handleColumnResize( i, c, TRUE );
} else if ( e->state() & (AltButton|MetaButton) && d->move ) {
//move section
int i2 = ( i + count() + dir ) % count();
d->focusIdx = i2;
handleColumnMove( i, i2 );
} else {
//focus on different section
QRect r = sRect( d->focusIdx );
d->focusIdx = (d->focusIdx + count() + dir) % count();
r |= sRect( d->focusIdx );
update( r );
}
} else {
e->ignore();
}
}
/*!
\reimp
*/
void QHeader::keyReleaseEvent( QKeyEvent *e )
{
switch ( e->key() ) {
case Key_Space:
//double check that this wasn't started with the mouse
if ( state == Pressed && handleIdx == d->focusIdx ) {
repaint(sRect( handleIdx ), FALSE);
int section = d->i2s[d->focusIdx];
emit released( section );
emit sectionClicked( handleIdx );
emit clicked( section );
state = Idle;
handleIdx = -1;
}
break;
default:
e->ignore();
}
}
/*!
\reimp
*/
void QHeader::mousePressEvent( QMouseEvent *e )
{
if ( e->button() != LeftButton || state != Idle )
return;
oldHIdxSize = handleIdx;
handleIdx = 0;
int c = orient == Horizontal ? e->pos().x() : e->pos().y();
c += offset();
if ( reverse() )
c = d->lastPos - c;
int section = d->sectionAt( c );
if ( section < 0 )
return;
int GripMargin = (bool)d->resize[ section ] ?
style().pixelMetric( QStyle::PM_HeaderGripMargin ) : 0;
int index = d->s2i[section];
if ( (index > 0 && c < d->positions[index] + GripMargin) ||
(c > d->positions[index] + d->sizes[section] - GripMargin) ) {
if ( c < d->positions[index] + GripMargin )
handleIdx = index-1;
else
handleIdx = index;
if ( d->lastPos <= ( orient == Horizontal ? width() :
height() ) && d->fullSize != -2 && handleIdx == count() - 1 ) {
handleIdx = -1;
return;
}
oldHIdxSize = d->sizes[ d->i2s[handleIdx] ];
state = d->resize[ d->i2s[handleIdx] ] ? Sliding : Blocked;
} else if ( index >= 0 ) {
oldHandleIdx = handleIdx = index;
moveToIdx = -1;
state = d->clicks[ d->i2s[handleIdx] ] ? Pressed : Blocked;
clickPos = c;
repaint( sRect( handleIdx ) );
if(oldHandleIdx != handleIdx)
repaint( sRect( oldHandleIdx ) );
emit pressed( section );
}
d->pressDelta = c - ( d->positions[handleIdx] + d->sizes[ d->i2s[handleIdx] ] );
}
/*!
\reimp
*/
void QHeader::mouseReleaseEvent( QMouseEvent *e )
{
if ( e->button() != LeftButton )
return;
int oldOldHandleIdx = oldHandleIdx;
State oldState = state;
state = Idle;
switch ( oldState ) {
case Pressed: {
int section = d->i2s[handleIdx];
emit released( section );
if ( sRect( handleIdx ).contains( e->pos() ) ) {
oldHandleIdx = handleIdx;
emit sectionClicked( handleIdx );
emit clicked( section );
} else {
handleIdx = oldHandleIdx;
}
repaint(sRect( handleIdx ), FALSE);
if ( oldOldHandleIdx != handleIdx )
repaint(sRect(oldOldHandleIdx ), FALSE );
} break;
case Sliding: {
int c = orient == Horizontal ? e->pos().x() : e->pos().y();
c += offset();
if ( reverse() )
c = d->lastPos - c;
handleColumnResize( handleIdx, c - d->pressDelta, TRUE );
} break;
case Moving: {
#ifndef QT_NO_CURSOR
unsetCursor();
#endif
int section = d->i2s[handleIdx];
if ( handleIdx != moveToIdx && moveToIdx != -1 ) {
moveSection( section, moveToIdx );
handleIdx = oldHandleIdx;
emit moved( handleIdx, moveToIdx );
emit indexChange( section, handleIdx, moveToIdx );
emit released( section );
repaint(); // a bit overkill, but removes the handle as well
} else {
if ( sRect( handleIdx).contains( e->pos() ) ) {
oldHandleIdx = handleIdx;
emit released( section );
emit sectionClicked( handleIdx );
emit clicked( section );
} else {
handleIdx = oldHandleIdx;
}
repaint(sRect( handleIdx ), FALSE );
if(oldOldHandleIdx != handleIdx)
repaint(sRect(oldOldHandleIdx ), FALSE );
}
break;
}
case Blocked:
//nothing
break;
default:
// empty, probably. Idle, at any rate.
break;
}
}
/*!
\reimp
*/
void QHeader::mouseMoveEvent( QMouseEvent *e )
{
int c = orient == Horizontal ? e->pos().x() : e->pos().y();
c += offset();
int pos = c;
if( reverse() )
c = d->lastPos - c;
switch( state ) {
case Idle:
#ifndef QT_NO_CURSOR
if ( handleAt(c) < 0 )
unsetCursor();
else if ( orient == Horizontal )
setCursor( splitHCursor );
else
setCursor( splitVCursor );
#endif
break;
case Blocked:
break;
case Pressed:
if ( QABS( c - clickPos ) > 4 && d->move ) {
state = Moving;
moveToIdx = -1;
#ifndef QT_NO_CURSOR
if ( orient == Horizontal )
setCursor( sizeHorCursor );
else
setCursor( sizeVerCursor );
#endif
}
break;
case Sliding:
handleColumnResize( handleIdx, c, FALSE, FALSE );
break;
case Moving: {
int newPos = findLine( pos );
if ( newPos != moveToIdx ) {
if ( moveToIdx == handleIdx || moveToIdx == handleIdx + 1 )
repaint( sRect(handleIdx) );
else
unMarkLine( moveToIdx );
moveToIdx = newPos;
if ( moveToIdx == handleIdx || moveToIdx == handleIdx + 1 )
paintRect( pPos( handleIdx ), pSize( handleIdx ) );
else
markLine( moveToIdx );
}
break;
}
default:
Undo prior accidental commit
13 years ago
qWarning( "QHeader::mouseMoveEvent: (%s) unknown state", name() );
Add Qt3 development HEAD version
14 years ago
break;
}
}
/*! \reimp */
void QHeader::mouseDoubleClickEvent( QMouseEvent *e )
{
int p = orient == Horizontal ? e->pos().x() : e->pos().y();
p += offset();
if( reverse() )
p = d->lastPos - p;
int header = handleAt(p);
if (header >= 0)
emit sectionHandleDoubleClicked( header );
}
/*
Handles resizing of sections. This means it redraws the relevant parts
of the header.
*/
void QHeader::handleColumnResize( int index, int c, bool final, bool recalcAll )
{
int section = d->i2s[index];
int GripMargin = (bool)d->resize[ section ] ?
style().pixelMetric( QStyle::PM_HeaderGripMargin ) : 0;
int lim = d->positions[index] + 2*GripMargin;
if ( c == lim )
return;
if ( c < lim )
c = lim;
int oldSize = d->sizes[section];
int newSize = c - d->positions[index];
d->sizes[section] = newSize;
calculatePositions( !recalcAll, !recalcAll ? section : 0 );
int pos = d->positions[index]-offset();
if( reverse() ) // repaint the whole thing. Could be optimized (lars)
repaint( 0, 0, width(), height() );
else if ( orient == Horizontal )
repaint( pos, 0, width() - pos, height() );
else
repaint( 0, pos, width(), height() - pos );
int os = 0, ns = 0;
if ( tracking() && oldSize != newSize ) {
os = oldSize;
ns = newSize;
emit sizeChange( section, oldSize, newSize );
} else if ( !tracking() && final && oldHIdxSize != newSize ) {
os = oldHIdxSize;
ns = newSize;
emit sizeChange( section, oldHIdxSize, newSize );
}
if ( os != ns ) {
if ( d->fullSize == -1 ) {
d->fullSize = count() - 1;
adjustHeaderSize();
d->fullSize = -1;
} else if ( d->fullSize >= 0 ) {
int old = d->fullSize;
d->fullSize = count() - 1;
adjustHeaderSize();
d->fullSize = old;
}
}
}
/*!
Returns the rectangle covered by the section at index \a index.
*/
QRect QHeader::sRect( int index )
{
int section = mapToSection( index );
if ( count() > 0 && index >= count() ) {
int s = d->positions[count() - 1] - offset() +
d->sizes[mapToSection(count() - 1)];
if ( orient == Horizontal )
return QRect( s, 0, width() - s + 10, height() );
else
return QRect( 0, s, width(), height() - s + 10 );
}
if ( section < 0 )
return rect(); // ### eeeeevil
if ( reverse() )
return QRect( d->lastPos - d->positions[index] - d->sizes[section] -offset(),
0, d->sizes[section], height() );
else if ( orient == Horizontal )
return QRect( d->positions[index]-offset(), 0, d->sizes[section], height() );
else
return QRect( 0, d->positions[index]-offset(), width(), d->sizes[section] );
}
/*!
Returns the rectangle covered by section \a section.
*/
QRect QHeader::sectionRect( int section ) const
{
int index = mapToIndex( section );
if ( section < 0 )
return rect(); // ### eeeeevil
if ( reverse() )
return QRect( d->lastPos - d->positions[index] - d->sizes[section] -offset(),
0, d->sizes[section], height() );
else if ( orient == Horizontal )
return QRect( d->positions[index]-offset(), 0, d->sizes[section], height() );
else
return QRect( 0, d->positions[index]-offset(), width(), d->sizes[section] );
}
/*!
\overload
Sets the icon for section \a section to \a iconset and the text to
\a s. The section's width is set to \a size if \a size \>= 0;
otherwise it is left unchanged.
If the section does not exist, nothing happens.
*/
void QHeader::setLabel( int section, const QIconSet& iconset,
const QString &s, int size )
{
if ( section < 0 || section >= count() )
return;
d->iconsets.insert( section, new QIconSet( iconset ) );
setLabel( section, s, size );
}
/*!
Sets the text of section \a section to \a s. The section's width
is set to \a size if \a size \>= 0; otherwise it is left
unchanged. Any icon set that has been set for this section remains
unchanged.
If the section does not exist, nothing happens.
*/
void QHeader::setLabel( int section, const QString &s, int size )
{
if ( section < 0 || section >= count() )
return;
if ( s.isNull() )
d->labels.remove( section );
else
d->labels.insert( section, new QString( s ) );
setSectionSizeAndHeight( section, size );
if ( isUpdatesEnabled() ) {
updateGeometry();
calculatePositions();
update();
}
}
bool qt_qheader_label_return_null_strings = FALSE;
/*!
Returns the text for section \a section. If the section does not
exist, a QString::null is returned.
*/
QString QHeader::label( int section ) const
{
if ( section < 0 || section >= count() )
return QString::null;
if ( d->labels[ section ] )
return *( d->labels[ section ] );
else if ( qt_qheader_label_return_null_strings )
return QString::null;
else
return QString::number( section + 1 );
}
/*!
Returns the icon set for section \a section. If the section does
not exist, 0 is returned.
*/
QIconSet *QHeader::iconSet( int section ) const
{
if ( section < 0 || section >= count() )
return 0;
return d->iconsets[ section ];
}
/*!
\overload
Adds a new section with iconset \a iconset and label text \a s.
Returns the index position where the section was added (at the
right for horizontal headers, at the bottom for vertical headers).
The section's width is set to \a size, unless size is negative in
which case the size is calculated taking account of the size of
the text.
*/
int QHeader::addLabel( const QIconSet& iconset, const QString &s, int size )
{
int n = count() + 1;
d->iconsets.resize( n + 1 );
d->iconsets.insert( n - 1, new QIconSet( iconset ) );
return addLabel( s, size );
}
/*!
Removes section \a section. If the section does not exist, nothing
happens.
*/
void QHeader::removeLabel( int section )
{
if ( section < 0 || section > count() - 1 )
return;
int index = d->s2i[section];
int n = --d->count;
int i;
for ( i = section; i < n; ++i ) {
d->sizes[i] = d->sizes[i+1];
d->labels.insert( i, d->labels.take( i + 1 ) );
d->iconsets.insert( i, d->iconsets.take( i + 1 ) );
}
d->sizes.resize( n );
d->positions.resize( n );
d->labels.resize( n );
d->iconsets.resize( n );
for ( i = section; i < n; ++i )
d->s2i[i] = d->s2i[i+1];
d->s2i.resize( n );
if ( isUpdatesEnabled() ) {
for ( i = 0; i < n; ++i )
if ( d->s2i[i] > index )
--d->s2i[i];
}
for ( i = index; i < n; ++i )
d->i2s[i] = d->i2s[i+1];
d->i2s.resize( n );
if ( isUpdatesEnabled() ) {
for ( i = 0; i < n; ++i )
if ( d->i2s[i] > section )
--d->i2s[i];
}
if ( isUpdatesEnabled() ) {
updateGeometry();
calculatePositions();
update();
}
}
QSize QHeader::sectionSizeHint( int section, const QFontMetrics& fm ) const
{
int iw = 0;
int ih = 0;
if ( d->iconsets[section] != 0 ) {
QSize isize = d->iconsets[section]->pixmap( QIconSet::Small,
QIconSet::Normal ).size();
iw = isize.width() + 2;
ih = isize.height();
}
QRect bound;
QString *label = d->labels[section];
if ( label ) {
int lines = label->contains( '\n' ) + 1;
int w = 0;
if (lines > 1) {
bound.setHeight(fm.height() + fm.lineSpacing() * (lines - 1));
QStringList list = QStringList::split('\n', *label);
for (int i=0; i <(int)list.count(); ++i) {
int tmpw = fm.width(*(list.at(i)));
w = QMAX(w, tmpw);
}
} else {
bound.setHeight(fm.height());
w = fm.width(*label);
}
bound.setWidth( w );
}
int arrowWidth = 0;
if ( d->sortSection == section )
arrowWidth = ( ( orient == Qt::Horizontal ? height() : width() ) / 2 ) + 8;
int height = QMAX( bound.height() + 2, ih ) + 4;
int width = bound.width() + style().pixelMetric( QStyle::PM_HeaderMargin ) * 4
+ iw + arrowWidth;
return QSize( width, height );
}
/*
Sets d->sizes[\a section] to a bounding rect based on its size
hint and font metrics, but constrained by \a size. It also updates
d->height.
*/
void QHeader::setSectionSizeAndHeight( int section, int size )
{
QSize sz = sectionSizeHint( section, fontMetrics() );
if ( size < 0 ) {
if ( d->sizes[section] < 0 )
d->sizes[section] = ( orient == Horizontal ) ? sz.width()
: sz.height();
} else {
d->sizes[section] = size;
}
int newHeight = ( orient == Horizontal ) ? sz.height() : sz.width();
if ( newHeight > d->height ) {
d->height = newHeight;
} else if ( newHeight < d->height ) {
/*
We could be smarter, but we aren't. This makes a difference
only for users with many columns and '\n's in their headers
at the same time.
*/
d->heightDirty = TRUE;
}
}
/*!
Adds a new section with label text \a s. Returns the index
position where the section was added (at the right for horizontal
headers, at the bottom for vertical headers). The section's width
is set to \a size. If \a size \< 0, an appropriate size for the
text \a s is chosen.
*/
int QHeader::addLabel( const QString &s, int size )
{
int n = ++d->count;
if ( (int)d->iconsets.size() < n )
d->iconsets.resize( n );
if ( (int)d->sizes.size() < n ) {
d->labels.resize( n );
d->sizes.resize( n );
d->positions.resize( n );
d->i2s.resize( n );
d->s2i.resize( n );
d->clicks.resize( n );
d->resize.resize( n );
}
int section = d->count - 1;
if ( !d->is_a_table_header || !s.isNull() )
d->labels.insert( section, new QString( s ) );
if ( size >= 0 && s.isNull() && d->is_a_table_header ) {
d->sizes[section] = size;
} else {
d->sizes[section] = -1;
setSectionSizeAndHeight( section, size );
}
int index = section;
d->positions[index] = d->lastPos;
d->s2i[section] = index;
d->i2s[index] = section;
d->clicks.setBit( section, d->clicks_default );
d->resize.setBit( section, d->resize_default );
if ( isUpdatesEnabled() ) {
updateGeometry();
calculatePositions();
update();
}
return index;
}
void QHeader::resizeArrays( int size )
{
d->iconsets.resize( size );
d->labels.resize( size );
d->sizes.resize( size );
d->positions.resize( size );
d->i2s.resize( size );
d->s2i.resize( size );
d->clicks.resize( size );
d->resize.resize( size );
}
void QHeader::setIsATableHeader( bool b )
{
d->is_a_table_header = b;
}
/*! \reimp */
QSize QHeader::sizeHint() const
{
int width;
int height;
constPolish();
QFontMetrics fm = fontMetrics();
if ( d->heightDirty ) {
d->height = fm.lineSpacing() + 6;
for ( int i = 0; i < count(); i++ ) {
int h = orient == Horizontal ?
sectionSizeHint( i, fm ).height() : sectionSizeHint( i, fm ).width();
d->height = QMAX( d->height, h );
}
d->heightDirty = FALSE;
}
if ( orient == Horizontal ) {
height = fm.lineSpacing() + 6;
width = 0;
height = QMAX( height, d->height );
for ( int i = 0; i < count(); i++ )
width += d->sizes[i];
} else {
width = fm.width( ' ' );
height = 0;
width = QMAX( width, d->height );
for ( int i = 0; i < count(); i++ )
height += d->sizes[i];
}
return (style().sizeFromContents(QStyle::CT_Header, this,
QSize(width, height)).expandedTo(QApplication::globalStrut()));
}
/*!
\property QHeader::offset
\brief the header's left-most (or top-most) visible pixel
Setting this property will scroll the header so that \e offset
becomes the left-most (or top-most for vertical headers) visible
pixel.
*/
int QHeader::offset() const
{
if ( reverse() )
return d->lastPos - width() - offs;
return offs;
}
void QHeader::setOffset( int x )
{
int oldOff = offset();
offs = x;
if( d->lastPos < ( orient == Horizontal ? width() : height() ) )
offs = 0;
else if ( reverse() )
offs = d->lastPos - width() - x;
if ( orient == Horizontal )
scroll( oldOff-offset(), 0 );
else
scroll( 0, oldOff-offset());
}
/*
Returns the position of actual division line \a i in widget
coordinates. May return a position outside the widget.
Note that the last division line is numbered count(). (There is one
more line than the number of sections).
*/
int QHeader::pPos( int i ) const
{
int pos;
if ( i == count() )
pos = d->lastPos;
else
pos = d->positions[i];
if ( reverse() )
pos = d->lastPos - pos;
return pos - offset();
}
/*
Returns the size of the section at index position \a i.
*/
int QHeader::pSize( int i ) const
{
return d->sizes[ d->i2s[i] ];
}
/*!
\obsolete
Use mapToSection() instead.
Translates from actual index \a a (index at which the section is displayed) to
logical index of the section. Returns -1 if \a a is outside the legal range.
\sa mapToActual()
*/
int QHeader::mapToLogical( int a ) const
{
return mapToSection( a );
}
/*!
\obsolete
Use mapToIndex() instead.
Translates from logical index \a l to actual index (index at which the section \a l is displayed) .
Returns -1 if \a l is outside the legal range.
\sa mapToLogical()
*/
int QHeader::mapToActual( int l ) const
{
return mapToIndex( l );
}
/*!
\obsolete
Use resizeSection() instead.
Sets the size of the section \a section to \a s pixels.
\warning does not repaint or send out signals
*/
void QHeader::setCellSize( int section, int s )
{
if ( section < 0 || section >= count() )
return;
d->sizes[ section ] = s;
if ( isUpdatesEnabled() )
calculatePositions();
}
/*!
If \a enable is TRUE the user may resize section \a section;
otherwise the section may not be manually resized.
If \a section is negative (the default) then the \a enable value
is set for all existing sections and will be applied to any new
sections that are added.
Example:
\code
// Allow resizing of all current and future sections
header->setResizeEnabled(TRUE);
// Disable resizing of section 3, (the fourth section added)
header->setResizeEnabled(FALSE, 3);
\endcode
If the user resizes a section, a sizeChange() signal is emitted.
\sa setMovingEnabled() setClickEnabled() setTracking()
*/
void QHeader::setResizeEnabled( bool enable, int section )
{
if ( section < 0 ) {
d->resize.fill( enable );
// and future ones...
d->resize_default = enable;
} else if ( section < count() ) {
d->resize[ section ] = enable;
}
}
/*!
\property QHeader::moving
\brief whether the header sections can be moved
If this property is TRUE (the default) the user can move sections.
If the user moves a section the indexChange() signal is emitted.
\sa setClickEnabled(), setResizeEnabled()
*/
void QHeader::setMovingEnabled( bool enable )
{
d->move = enable;
}
/*!
If \a enable is TRUE, any clicks on section \a section will result
in clicked() signals being emitted; otherwise the section will
ignore clicks.
If \a section is -1 (the default) then the \a enable value is set
for all existing sections and will be applied to any new sections
that are added.
\sa setMovingEnabled(), setResizeEnabled()
*/
void QHeader::setClickEnabled( bool enable, int section )
{
if ( section < 0 ) {
d->clicks.fill( enable );
// and future ones...
d->clicks_default = enable;
} else if ( section < count() ) {
d->clicks[ section ] = enable;
}
}
/*!
Paints the section at position \a index, inside rectangle \a fr
(which uses widget coordinates) using painter \a p.
Calls paintSectionLabel().
*/
void QHeader::paintSection( QPainter *p, int index, const QRect& fr )
{
int section = mapToSection( index );
if ( section < 0 ) {
style().drawPrimitive( QStyle::PE_HeaderSection, p, fr,
colorGroup(), QStyle::Style_Raised |
(isEnabled() ? QStyle::Style_Enabled : 0) |
( orient == Horizontal ? QStyle::Style_Horizontal : 0 ),
QStyleOption( this ) );
return;
}
if ( sectionSize( section ) <= 0 )
return;
QStyle::SFlags flags = (orient == Horizontal ? QStyle::Style_Horizontal : QStyle::Style_Default);
//pass in some hint about the sort indicator if it is used
if(d->sortSection != section)
flags |= QStyle::Style_Off;
else if(!d->sortDirection)
flags |= QStyle::Style_Up;
if(isEnabled())
flags |= QStyle::Style_Enabled;
if(isClickEnabled(section)) {
if(section == d->sortSection)
flags |= QStyle::Style_Sunken; //currently selected
if((state == Pressed || state == Moving) && index == handleIdx)
flags |= QStyle::Style_Down; //currently pressed
}
if(!(flags & QStyle::Style_Down))
flags |= QStyle::Style_Raised;
p->setBrushOrigin( fr.topLeft() );
if ( d->clicks[section] ) {
style().drawPrimitive( QStyle::PE_HeaderSection, p, fr,
colorGroup(), flags,
QStyleOption( this ) );
} else {
p->save();
p->setClipRect( fr ); // hack to keep styles working
if ( orientation() == Horizontal ) {
style().drawPrimitive( QStyle::PE_HeaderSection, p,
QRect(fr.x() - 2, fr.y() - 2, fr.width() + 4, fr.height() + 4),
colorGroup(), flags,
QStyleOption( this ) );
p->setPen( colorGroup().color( QColorGroup::Mid ) );
p->drawLine( fr.x(), fr.y() + fr.height() - 1,
fr.x() + fr.width() - 1, fr.y() + fr.height() - 1 );
p->drawLine( fr.x() + fr.width() - 1, fr.y(),
fr.x() + fr.width() - 1, fr.y() + fr.height() - 1 );
p->setPen( colorGroup().color( QColorGroup::Light ) );
if ( index > 0 )
p->drawLine( fr.x(), fr.y(), fr.x(), fr.y() + fr.height() - 1 );
if ( index == count() - 1 ) {
p->drawLine( fr.x() + fr.width() - 1, fr.y(),
fr.x() + fr.width() - 1, fr.y() + fr.height() - 1 );
p->setPen( colorGroup().color( QColorGroup::Mid ) );
p->drawLine( fr.x() + fr.width() - 2, fr.y(),
fr.x() + fr.width() - 2, fr.y() + fr.height() - 1 );
}
} else {
style().drawPrimitive( QStyle::PE_HeaderSection, p,
QRect(fr.x() - 2, fr.y() - 2, fr.width() + 4, fr.height() + 4),
colorGroup(), flags,
QStyleOption( this ) );
p->setPen( colorGroup().color( QColorGroup::Mid ) );
p->drawLine( fr.x() + width() - 1, fr.y(),
fr.x() + fr.width() - 1, fr.y() + fr.height() - 1 );
p->drawLine( fr.x(), fr.y() + fr.height() - 1,
fr.x() + fr.width() - 1, fr.y() + fr.height() - 1 );
p->setPen( colorGroup().color( QColorGroup::Light ) );
if ( index > 0 )
p->drawLine( fr.x(), fr.y(), fr.x() + fr.width() - 1, fr.y() );
if ( index == count() - 1 ) {
p->drawLine( fr.x(), fr.y() + fr.height() - 1,
fr.x() + fr.width() - 1, fr.y() + fr.height() - 1 );
p->setPen( colorGroup().color( QColorGroup::Mid ) );
p->drawLine( fr.x(), fr.y() + fr.height() - 2,
fr.x() + fr.width() - 1, fr.y() + fr.height() - 2 );
}
}
p->restore();
}
paintSectionLabel( p, index, fr );
}
/*!
Paints the label of the section at position \a index, inside
rectangle \a fr (which uses widget coordinates) using painter \a
p.
Called by paintSection()
*/
void QHeader::paintSectionLabel( QPainter *p, int index, const QRect& fr )
{
int section = mapToSection( index );
if ( section < 0 )
return;
int dx = 0, dy = 0;
QStyle::SFlags flags = QStyle::Style_Default;
if ( index == handleIdx && ( state == Pressed || state == Moving ) ) {
dx = style().pixelMetric( QStyle::PM_ButtonShiftHorizontal, this );
dy = style().pixelMetric( QStyle::PM_ButtonShiftVertical, this );
flags |= QStyle::Style_Sunken;
}
if ( isEnabled() )
flags |= QStyle::Style_Enabled;
QRect r( fr.x() + style().pixelMetric( QStyle::PM_HeaderMargin ) + dx, fr.y() + 2 + dy,
fr.width() - 6, fr.height() - 4 );
style().drawControl( QStyle::CE_HeaderLabel, p, this, r, colorGroup(), flags,
QStyleOption( section ) );
int arrowWidth = ( orient == Qt::Horizontal ? height() : width() ) / 2;
int arrowHeight = fr.height() - 6;
QSize ssh = sectionSizeHint( section, p->fontMetrics() );
int tw = ( orient == Qt::Horizontal ? ssh.width() : ssh.height() );
int ew = 0;
if ( style().styleHint( QStyle::SH_Header_ArrowAlignment, this ) & AlignRight )
ew = fr.width() - tw - 8;
if ( d->sortSection == section && tw <= fr.width() ) {
if ( reverse() ) {
tw = fr.width() - tw;
ew = fr.width() - ew - tw;
}
QStyle::SFlags flags = QStyle::Style_Default;
if ( isEnabled() )
flags |= QStyle::Style_Enabled;
if ( d->sortDirection )
flags |= QStyle::Style_Down;
else
flags |= QStyle::Style_Up;
QRect ar(fr.x() + tw - arrowWidth - 6 + ew, 4, arrowWidth, arrowHeight);
if (label(section).isRightToLeft())
ar.moveBy( 2*(fr.right() - ar.right()) + ar.width() - fr.width(), 0 );
style().drawPrimitive( QStyle::PE_HeaderArrow, p,
ar, colorGroup(), flags, QStyleOption( this ) );
}
}
/*! \reimp */
void QHeader::paintEvent( QPaintEvent *e )
{
QPainter p( this );
p.setPen( colorGroup().buttonText() );
int pos = orient == Horizontal ? e->rect().left() : e->rect().top();
int id = mapToIndex( sectionAt( pos + offset() ) );
if ( id < 0 ) {
if ( pos > 0 )
id = d->count;
else if ( reverse() )
id = d->count - 1;
else
id = 0;
}
if ( reverse() ) {
for ( int i = id; i >= 0; i-- ) {
QRect r = sRect( i );
paintSection( &p, i, r );
if ( r.right() >= e->rect().right() )
return;
}
} else {
if ( count() > 0 ) {
for ( int i = id; i <= count(); i++ ) {
QRect r = sRect( i );
/*
If the last section is clickable (and thus is
painted raised), draw the virtual section count()
as well. Otherwise it looks ugly.
*/
if ( i < count() || d->clicks[ mapToSection( count() - 1 ) ] )
paintSection( &p, i, r );
if ( hasFocus() && d->focusIdx == i ) {
QRect fr( r.x()+2, r.y()+2, r.width()-4, r.height()-4 );
style().drawPrimitive( QStyle::PE_FocusRect, &p, fr,
colorGroup() );
}
Fix build warnings Thanks to Bruce Sass for the patch!
12 years ago
if ( ( orient == Horizontal && r. right() >= e->rect().right() ) ||
( orient == Vertical && r. bottom() >= e->rect().bottom() ) )
Add Qt3 development HEAD version
14 years ago
return;
}
}
}
}
/*! \overload
\obsolete
Use the other overload instead.
*/
void QHeader::setSortIndicator( int section, bool ascending )
{
d->sortSection = section;
if ( section != -1 )
oldHandleIdx = section;
d->sortDirection = ascending;
update();
updateGeometry();
}
/*!
\fn void QHeader::setSortIndicator(int section, SortOrder order)
Sets a sort indicator onto the specified \a section. The indicator's
\a order is either Ascending or Descending.
Only one section can show a sort indicator at any one time. If you
don't want any section to show a sort indicator pass a \a section
number of -1.
\sa sortIndicatorSection(), sortIndicatorOrder()
*/
/*!
Returns the section showing the sort indicator or -1 if there is no sort indicator.
\sa setSortIndicator(), sortIndicatorOrder()
*/
int QHeader::sortIndicatorSection() const
{
return d->sortSection;
}
/*!
Returns the implied sort order of the QHeaders sort indicator.
\sa setSortIndicator(), sortIndicatorSection()
*/
Qt::SortOrder QHeader::sortIndicatorOrder() const
{
return d->sortDirection ? Ascending : Descending;
}
/*!
Resizes section \a section to \a s pixels wide (or high).
*/
void QHeader::resizeSection( int section, int s )
{
setCellSize( section, s );
update();
}
/*!
Returns the width (or height) of the \a section in pixels.
*/
int QHeader::sectionSize( int section ) const
{
if ( section < 0 || section >= count() )
return 0;
return d->sizes[section];
}
/*!
Returns the position (in pixels) at which the \a section starts.
\sa offset()
*/
int QHeader::sectionPos( int section ) const
{
if ( d->positionsDirty )
((QHeader *)this)->calculatePositions();
if ( section < 0 || section >= count() )
return 0;
return d->positions[ d->s2i[section] ];
}
/*!
Returns the index of the section which contains the position \a
pos given in pixels from the left (or top).
\sa offset()
*/
int QHeader::sectionAt( int pos ) const
{
if ( reverse() )
pos = d->lastPos - pos;
return d->sectionAt( pos );
}
/*!
Returns the number of the section that corresponds to the specified \a index.
\warning If QTable is used to move header sections as a result of user
interaction, the mapping exposed by this function will not reflect the
order of the headers in the table; i.e., QTable does not call moveSection()
to move sections but handles move operations internally.
\sa mapToIndex()
*/
int QHeader::mapToSection( int index ) const
{
return ( index >= 0 && index < count() ) ? d->i2s[ index ] : -1;
}
/*!
Returns the index position corresponding to the specified \a section number.
\warning If QTable is used to move header sections as a result of user
interaction, the mapping exposed by this function will not reflect the
order of the headers in the table; i.e., QTable does not call moveSection()
to move sections but handles move operations internally.
\sa mapToSection()
*/
int QHeader::mapToIndex( int section ) const
{
return ( section >= 0 && section < count() ) ? d->s2i[ section ] : -1;
}
/*!
Moves section \a section to index position \a toIndex.
*/
void QHeader::moveSection( int section, int toIndex )
{
int fromIndex = mapToIndex( section );
if ( fromIndex == toIndex ||
fromIndex < 0 || fromIndex > count() ||
toIndex < 0 || toIndex > count() )
return;
int i;
int idx = d->i2s[fromIndex];
if ( fromIndex < toIndex ) {
for ( i = fromIndex; i < toIndex - 1; i++ ) {
int t;
d->i2s[i] = t = d->i2s[i+1];
d->s2i[t] = i;
}
d->i2s[toIndex-1] = idx;
d->s2i[idx] = toIndex-1;
} else {
for ( i = fromIndex; i > toIndex; i-- ) {
int t;
d->i2s[i] = t = d->i2s[i-1];
d->s2i[t] = i;
}
d->i2s[toIndex] = idx;
d->s2i[idx] = toIndex;
}
calculatePositions();
}
/*!
Returns TRUE if section \a section is clickable; otherwise returns
FALSE.
If \a section is out of range (negative or larger than count() -
1): returns TRUE if all sections are clickable; otherwise returns
FALSE.
\sa setClickEnabled()
*/
bool QHeader::isClickEnabled( int section ) const
{
if ( section >= 0 && section < count() ) {
return (bool)d->clicks[ section ];
}
for ( int i = 0; i < count(); ++i ) {
if ( !d->clicks[ i ] )
return FALSE;
}
return TRUE;
}
/*!
Returns TRUE if section \a section is resizeable; otherwise
returns FALSE.
If \a section is -1 then this function applies to all sections,
i.e. returns TRUE if all sections are resizeable; otherwise
returns FALSE.
\sa setResizeEnabled()
*/
bool QHeader::isResizeEnabled( int section ) const
{
if ( section >= 0 && section < count() ) {
return (bool)d->resize[ section ];
}
for ( int i = 0; i < count();++i ) {
if ( !d->resize[ i ] )
return FALSE;
}
return TRUE;
}
bool QHeader::isMovingEnabled() const
{
return d->move;
}
/*! \reimp */
void QHeader::setUpdatesEnabled( bool enable )
{
if ( enable )
calculatePositions();
QWidget::setUpdatesEnabled( enable );
}
bool QHeader::reverse () const
{
#if 0
return ( orient == Qt::Horizontal && QApplication::reverseLayout() );
#else
return FALSE;
#endif
}
/*! \reimp */
void QHeader::resizeEvent( QResizeEvent *e )
{
if ( e )
QWidget::resizeEvent( e );
if( d->lastPos < width() ) {
offs = 0;
}
if ( e ) {
adjustHeaderSize( orientation() == Horizontal ?
width() - e->oldSize().width() : height() - e->oldSize().height() );
if ( (orientation() == Horizontal && height() != e->oldSize().height())
|| (orientation() == Vertical && width() != e->oldSize().width()) )
update();
} else
adjustHeaderSize();
}
/*!
\fn void QHeader::adjustHeaderSize()
Adjusts the size of the sections to fit the size of the header as
completely as possible. Only sections for which isStretchEnabled()
is TRUE will be resized.
*/
void QHeader::adjustHeaderSize( int diff )
{
if ( !count() )
return;
// we skip the adjustHeaderSize when trying to resize the last column which is set to stretchable
if ( d->fullSize == (count() -1) &&
(d->lastPos - d->sizes[count() -1]) > ( orient == Horizontal ? width() : height() ) )
return;
if ( d->fullSize >= 0 ) {
int sec = mapToSection( d->fullSize );
int lsec = mapToSection( count() - 1 );
int ns = sectionSize( sec ) +
( orientation() == Horizontal ?
width() : height() ) - ( sectionPos( lsec ) + sectionSize( lsec ) );
int os = sectionSize( sec );
if ( ns < 20 )
ns = 20;
setCellSize( sec, ns );
repaint( FALSE );
emit sizeChange( sec, os, ns );
} else if ( d->fullSize == -1 ) {
int df = diff / count();
int part = orientation() == Horizontal ? width() / count() : height() / count();
for ( int i = 0; i < count() - 1; ++i ) {
int sec = mapToIndex( i );
int os = sectionSize( sec );
int ns = diff != -1 ? os + df : part;
if ( ns < 20 )
ns = 20;
setCellSize( sec, ns );
emit sizeChange( sec, os, ns );
}
int sec = mapToIndex( count() - 1 );
int ns = ( orientation() == Horizontal ? width() : height() ) - sectionPos( sec );
int os = sectionSize( sec );
if ( ns < 20 )
ns = 20;
setCellSize( sec, ns );
repaint( FALSE );
emit sizeChange( sec, os, ns );
}
}
/*!
Returns the total width of all the header columns.
*/
int QHeader::headerWidth() const
{
if ( d->pos_dirty ) {
( (QHeader*)this )->calculatePositions();
d->pos_dirty = FALSE;
}
return d->lastPos;
}
void QHeader::calculatePositions( bool onlyVisible, int start )
{
d->positionsDirty = FALSE;
d->lastPos = count() > 0 ? d->positions[start] : 0;
for ( int i = start; i < count(); i++ ) {
d->positions[i] = d->lastPos;
d->lastPos += d->sizes[d->i2s[i]];
if ( onlyVisible && d->lastPos > offset() +
( orientation() == Horizontal ? width() : height() ) )
break;
}
d->pos_dirty = onlyVisible;
}
/*!
\property QHeader::stretching
\brief whether the header sections always take up the full width
(or height) of the header
*/
/*!
If \a b is TRUE, section \a section will be resized when the
header is resized, so that the sections take up the full width (or
height for vertical headers) of the header; otherwise section \a
section will be set to be unstretchable and will not resize when
the header is resized.
If \a section is -1, and if \a b is TRUE, then all sections will
be resized equally when the header is resized so that they take up
the full width (or height for vertical headers) of the header;
otherwise all the sections will be set to be unstretchable and
will not resize when the header is resized.
\sa adjustHeaderSize()
*/
void QHeader::setStretchEnabled( bool b, int section )
{
if ( b )
d->fullSize = section;
else
d->fullSize = -2;
adjustHeaderSize();
}
bool QHeader::isStretchEnabled() const
{
return d->fullSize == -1;
}
/*!
\overload
Returns TRUE if section \a section will resize to take up the full
width (or height) of the header; otherwise returns FALSE. If at
least one section has stretch enabled the sections will always
take up the full width of the header.
\sa setStretchEnabled()
*/
bool QHeader::isStretchEnabled( int section ) const
{
return d->fullSize == section;
}
/*!
\reimp
*/
void QHeader::fontChange( const QFont &oldFont )
{
QFontMetrics fm = fontMetrics();
d->height = ( orient == Horizontal ) ? fm.lineSpacing() + 6 : fm.width( ' ' );
QWidget::fontChange( oldFont );
}
#endif // QT_NO_HEADER