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tqt3/src/widgets/qheader.cpp

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/****************************************************************************
**
** Implementation of TQHeader 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 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 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.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 "ntqheader.h"
#ifndef QT_NO_HEADER
#include "ntqpainter.h"
#include "ntqdrawutil.h"
#include "ntqpixmap.h"
#include "ntqbitarray.h"
#include "ntqptrvector.h"
#include "ntqapplication.h"
#include "ntqstyle.h"
class TQHeaderData
{
public:
TQHeaderData(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;
}
TQMemArray<TQCOORD> sizes;
int height; // we abuse the heights as widths for vertical layout
bool heightDirty;
TQMemArray<TQCOORD> positions; // sorted by index
TQPtrVector<TQString> labels;
TQPtrVector<TQIconSet> iconsets;
TQMemArray<int> i2s;
TQMemArray<int> s2i;
TQBitArray clicks;
TQBitArray 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 TQHeader ntqheader.h
\brief The TQHeader 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 TQTable and TQListView for example.
A header is composed of one or more \e sections, each of which can
display a text label and an \link TQIconSet 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
TQHeader 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.
TQHeader 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 TQListView TQTable
*/
/*!
Constructs a horizontal header called \a name, with parent \a
parent.
*/
TQHeader::TQHeader( TQWidget *parent, const char *name )
: TQWidget( parent, name, WStaticContents )
{
orient = Horizontal;
init( 0 );
}
/*!
Constructs a horizontal header called \a name, with \a n sections
and parent \a parent.
*/
TQHeader::TQHeader( int n, TQWidget *parent, const char *name )
: TQWidget( parent, name, WStaticContents )
{
orient = Horizontal;
init( n );
}
/*!
Destroys the header and all its sections.
*/
TQHeader::~TQHeader()
{
delete d;
d = 0;
}
/*! \reimp
*/
void TQHeader::showEvent( TQShowEvent *e )
{
calculatePositions();
TQWidget::showEvent( e );
}
/*!
\fn void TQHeader::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 TQHeader::clicked( int section )
If isClickEnabled() is TRUE, this signal is emitted when the user
clicks section \a section.
\sa pressed(), released()
*/
/*!
\fn void TQHeader::pressed( int section )
This signal is emitted when the user presses section \a section
down.
\sa released()
*/
/*!
\fn void TQHeader::released( int section )
This signal is emitted when section \a section is released.
\sa pressed()
*/
/*!
\fn void TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::count
\brief the number of sections in the header
*/
int TQHeader::count() const
{
return d->count;
}
/*!
\property TQHeader::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 TQHeader::init( int n )
{
state = Idle;
cachedPos = 0; // unused
d = new TQHeaderData( 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( TQSizePolicy( TQSizePolicy::Preferred, TQSizePolicy::Fixed ) );
}
/*!
\property TQHeader::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 TQHeader::setOrientation( Orientation orientation )
{
if ( orient == orientation )
return;
orient = orientation;
if ( orient == Horizontal )
setSizePolicy( TQSizePolicy( TQSizePolicy::Preferred, TQSizePolicy::Fixed ) );
else
setSizePolicy( TQSizePolicy( TQSizePolicy::Fixed, TQSizePolicy::Preferred ) );
update();
updateGeometry();
}
/*
Paints a rectangle starting at \a p, with length \s.
*/
void TQHeader::paintRect( int p, int s )
{
TQPainter paint( this );
paint.setPen( TQPen( 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 TQHeader::markLine( int idx )
{
TQPainter paint( this );
paint.setPen( TQPen( black, 1, DotLine ) );
int MARKSIZE = style().pixelMetric( TQStyle::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 TQHeader::unMarkLine( int idx )
{
if ( idx < 0 )
return;
int MARKSIZE = style().pixelMetric( TQStyle::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 TQHeader::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 TQHeader::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( TQStyle::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 TQHeader::handleAt(int p)
{
int section = d->sectionAt( p );
if ( section >= 0 ) {
int GripMargin = (bool)d->resize[ section ] ?
style().pixelMetric( TQStyle::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 TQHeader::moveCell( int fromIdx, int toIdx )
{
moveSection( mapToSection(fromIdx), toIdx );
}
/*!
Move and signal and repaint.
*/
void TQHeader::handleColumnMove( int fromIdx, int toIdx )
{
int s = d->i2s[fromIdx];
if ( fromIdx < toIdx )
toIdx++; //Convert to
TQRect r = sRect( fromIdx );
r |= sRect( toIdx );
moveSection( s, toIdx );
update( r );
emit moved( fromIdx, toIdx );
emit indexChange( s, fromIdx, toIdx );
}
/*!
\reimp
*/
void TQHeader::keyPressEvent( TQKeyEvent *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] );
}
} else if ( orientation() == Horizontal &&
(e->key() == Key_Right || e->key() == Key_Left)
|| orientation() == Vertical &&
(e->key() == Key_Up || e->key() == Key_Down) ) {
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
TQRect r = sRect( d->focusIdx );
d->focusIdx = (d->focusIdx + count() + dir) % count();
r |= sRect( d->focusIdx );
update( r );
}
} else {
e->ignore();
}
}
/*!
\reimp
*/
void TQHeader::keyReleaseEvent( TQKeyEvent *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 TQHeader::mousePressEvent( TQMouseEvent *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( TQStyle::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 TQHeader::mouseReleaseEvent( TQMouseEvent *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 TQHeader::mouseMoveEvent( TQMouseEvent *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 ( TQABS( 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:
tqWarning( "TQHeader::mouseMoveEvent: (%s) unknown state", name() );
break;
}
}
/*! \reimp */
void TQHeader::mouseDoubleClickEvent( TQMouseEvent *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 TQHeader::handleColumnResize( int index, int c, bool final, bool recalcAll )
{
int section = d->i2s[index];
int GripMargin = (bool)d->resize[ section ] ?
style().pixelMetric( TQStyle::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.
*/
TQRect TQHeader::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 TQRect( s, 0, width() - s + 10, height() );
else
return TQRect( 0, s, width(), height() - s + 10 );
}
if ( section < 0 )
return rect(); // ### eeeeevil
if ( reverse() )
return TQRect( d->lastPos - d->positions[index] - d->sizes[section] -offset(),
0, d->sizes[section], height() );
else if ( orient == Horizontal )
return TQRect( d->positions[index]-offset(), 0, d->sizes[section], height() );
else
return TQRect( 0, d->positions[index]-offset(), width(), d->sizes[section] );
}
/*!
Returns the rectangle covered by section \a section.
*/
TQRect TQHeader::sectionRect( int section ) const
{
int index = mapToIndex( section );
if ( section < 0 )
return rect(); // ### eeeeevil
if ( reverse() )
return TQRect( d->lastPos - d->positions[index] - d->sizes[section] -offset(),
0, d->sizes[section], height() );
else if ( orient == Horizontal )
return TQRect( d->positions[index]-offset(), 0, d->sizes[section], height() );
else
return TQRect( 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 TQHeader::setLabel( int section, const TQIconSet& iconset,
const TQString &s, int size )
{
if ( section < 0 || section >= count() )
return;
d->iconsets.insert( section, new TQIconSet( 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 TQHeader::setLabel( int section, const TQString &s, int size )
{
if ( section < 0 || section >= count() )
return;
if ( s.isNull() )
d->labels.remove( section );
else
d->labels.insert( section, new TQString( s ) );
setSectionSizeAndHeight( section, size );
if ( isUpdatesEnabled() ) {
updateGeometry();
calculatePositions();
update();
}
}
bool tqt_qheader_label_return_null_strings = FALSE;
/*!
Returns the text for section \a section. If the section does not
exist, a TQString::null is returned.
*/
TQString TQHeader::label( int section ) const
{
if ( section < 0 || section >= count() )
return TQString::null;
if ( d->labels[ section ] )
return *( d->labels[ section ] );
else if ( tqt_qheader_label_return_null_strings )
return TQString::null;
else
return TQString::number( section + 1 );
}
/*!
Returns the icon set for section \a section. If the section does
not exist, 0 is returned.
*/
TQIconSet *TQHeader::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 TQHeader::addLabel( const TQIconSet& iconset, const TQString &s, int size )
{
int n = count() + 1;
d->iconsets.resize( n + 1 );
d->iconsets.insert( n - 1, new TQIconSet( iconset ) );
return addLabel( s, size );
}
/*!
Removes section \a section. If the section does not exist, nothing
happens.
*/
void TQHeader::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();
}
}
TQSize TQHeader::sectionSizeHint( int section, const TQFontMetrics& fm ) const
{
int iw = 0;
int ih = 0;
if ( d->iconsets[section] != 0 ) {
TQSize isize = d->iconsets[section]->pixmap( TQIconSet::Small,
TQIconSet::Normal ).size();
iw = isize.width() + 2;
ih = isize.height();
}
TQRect bound;
TQString *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));
TQStringList list = TQStringList::split('\n', *label);
for (int i=0; i <(int)list.count(); ++i) {
int tmpw = fm.width(*(list.at(i)));
w = TQMAX(w, tmpw);
}
} else {
bound.setHeight(fm.height());
w = fm.width(*label);
}
bound.setWidth( w );
}
int arrowWidth = 0;
if ( d->sortSection == section )
arrowWidth = ( ( orient == TQt::Horizontal ? height() : width() ) / 2 ) + 8;
int height = TQMAX( bound.height() + 2, ih ) + 4;
int width = bound.width() + style().pixelMetric( TQStyle::PM_HeaderMargin ) * 4
+ iw + arrowWidth;
return TQSize( 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 TQHeader::setSectionSizeAndHeight( int section, int size )
{
TQSize 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 TQHeader::addLabel( const TQString &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 TQString( 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 TQHeader::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 TQHeader::setIsATableHeader( bool b )
{
d->is_a_table_header = b;
}
/*! \reimp */
TQSize TQHeader::sizeHint() const
{
int width;
int height;
constPolish();
TQFontMetrics 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 = TQMAX( d->height, h );
}
d->heightDirty = FALSE;
}
if ( orient == Horizontal ) {
height = fm.lineSpacing() + 6;
width = 0;
height = TQMAX( height, d->height );
for ( int i = 0; i < count(); i++ )
width += d->sizes[i];
} else {
width = fm.width( ' ' );
height = 0;
width = TQMAX( width, d->height );
for ( int i = 0; i < count(); i++ )
height += d->sizes[i];
}
return (style().sizeFromContents(TQStyle::CT_Header, this,
TQSize(width, height)).expandedTo(TQApplication::globalStrut()));
}
/*!
\property TQHeader::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 TQHeader::offset() const
{
if ( reverse() )
return d->lastPos - width() - offs;
return offs;
}
void TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::paintSection( TQPainter *p, int index, const TQRect& fr )
{
int section = mapToSection( index );
if ( section < 0 ) {
style().drawPrimitive( TQStyle::PE_HeaderSection, p, fr,
colorGroup(), TQStyle::Style_Raised |
(isEnabled() ? TQStyle::Style_Enabled : 0) |
( orient == Horizontal ? TQStyle::Style_Horizontal : 0 ),
TQStyleOption( this ) );
return;
}
if ( sectionSize( section ) <= 0 )
return;
TQStyle::SFlags flags = (orient == Horizontal ? TQStyle::Style_Horizontal : TQStyle::Style_Default);
//pass in some hint about the sort indicator if it is used
if(d->sortSection != section)
flags |= TQStyle::Style_Off;
else if(!d->sortDirection)
flags |= TQStyle::Style_Up;
if(isEnabled())
flags |= TQStyle::Style_Enabled;
if(isClickEnabled(section)) {
if(section == d->sortSection)
flags |= TQStyle::Style_Sunken; //currently selected
if((state == Pressed || state == Moving) && index == handleIdx)
flags |= TQStyle::Style_Down; //currently pressed
}
if(!(flags & TQStyle::Style_Down))
flags |= TQStyle::Style_Raised;
p->setBrushOrigin( fr.topLeft() );
if ( d->clicks[section] ) {
style().drawPrimitive( TQStyle::PE_HeaderSection, p, fr,
colorGroup(), flags,
TQStyleOption( this ) );
} else {
p->save();
p->setClipRect( fr ); // hack to keep styles working
if ( orientation() == Horizontal ) {
style().drawPrimitive( TQStyle::PE_HeaderSection, p,
TQRect(fr.x() - 2, fr.y() - 2, fr.width() + 4, fr.height() + 4),
colorGroup(), flags,
TQStyleOption( this ) );
p->setPen( colorGroup().color( TQColorGroup::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( TQColorGroup::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( TQColorGroup::Mid ) );
p->drawLine( fr.x() + fr.width() - 2, fr.y(),
fr.x() + fr.width() - 2, fr.y() + fr.height() - 1 );
}
} else {
style().drawPrimitive( TQStyle::PE_HeaderSection, p,
TQRect(fr.x() - 2, fr.y() - 2, fr.width() + 4, fr.height() + 4),
colorGroup(), flags,
TQStyleOption( this ) );
p->setPen( colorGroup().color( TQColorGroup::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( TQColorGroup::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( TQColorGroup::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 TQHeader::paintSectionLabel( TQPainter *p, int index, const TQRect& fr )
{
int section = mapToSection( index );
if ( section < 0 )
return;
int dx = 0, dy = 0;
TQStyle::SFlags flags = TQStyle::Style_Default;
if ( index == handleIdx && ( state == Pressed || state == Moving ) ) {
dx = style().pixelMetric( TQStyle::PM_ButtonShiftHorizontal, this );
dy = style().pixelMetric( TQStyle::PM_ButtonShiftVertical, this );
flags |= TQStyle::Style_Sunken;
}
if ( isEnabled() )
flags |= TQStyle::Style_Enabled;
TQRect r( fr.x() + style().pixelMetric( TQStyle::PM_HeaderMargin ) + dx, fr.y() + 2 + dy,
fr.width() - 6, fr.height() - 4 );
style().drawControl( TQStyle::CE_HeaderLabel, p, this, r, colorGroup(), flags,
TQStyleOption( section ) );
int arrowWidth = ( orient == TQt::Horizontal ? height() : width() ) / 2;
int arrowHeight = fr.height() - 6;
TQSize ssh = sectionSizeHint( section, p->fontMetrics() );
int tw = ( orient == TQt::Horizontal ? ssh.width() : ssh.height() );
int ew = 0;
if ( style().styleHint( TQStyle::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;
}
TQStyle::SFlags flags = TQStyle::Style_Default;
if ( isEnabled() )
flags |= TQStyle::Style_Enabled;
if ( d->sortDirection )
flags |= TQStyle::Style_Down;
else
flags |= TQStyle::Style_Up;
TQRect 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( TQStyle::PE_HeaderArrow, p,
ar, colorGroup(), flags, TQStyleOption( this ) );
}
}
/*! \reimp */
void TQHeader::paintEvent( TQPaintEvent *e )
{
TQPainter 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-- ) {
TQRect 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++ ) {
TQRect 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 ) {
TQRect fr( r.x()+2, r.y()+2, r.width()-4, r.height()-4 );
style().drawPrimitive( TQStyle::PE_FocusRect, &p, fr,
colorGroup() );
}
if ( orient == Horizontal && r. right() >= e->rect().right() ||
orient == Vertical && r. bottom() >= e->rect().bottom() )
return;
}
}
}
}
/*! \overload
\obsolete
Use the other overload instead.
*/
void TQHeader::setSortIndicator( int section, bool ascending )
{
d->sortSection = section;
if ( section != -1 )
oldHandleIdx = section;
d->sortDirection = ascending;
update();
updateGeometry();
}
/*!
\fn void TQHeader::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 TQHeader::sortIndicatorSection() const
{
return d->sortSection;
}
/*!
Returns the implied sort order of the TQHeaders sort indicator.
\sa setSortIndicator(), sortIndicatorSection()
*/
TQt::SortOrder TQHeader::sortIndicatorOrder() const
{
return d->sortDirection ? Ascending : Descending;
}
/*!
Resizes section \a section to \a s pixels wide (or high).
*/
void TQHeader::resizeSection( int section, int s )
{
setCellSize( section, s );
update();
}
/*!
Returns the width (or height) of the \a section in pixels.
*/
int TQHeader::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 TQHeader::sectionPos( int section ) const
{
if ( d->positionsDirty )
((TQHeader *)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 TQHeader::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 TQTable 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., TQTable does not call moveSection()
to move sections but handles move operations internally.
\sa mapToIndex()
*/
int TQHeader::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 TQTable 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., TQTable does not call moveSection()
to move sections but handles move operations internally.
\sa mapToSection()
*/
int TQHeader::mapToIndex( int section ) const
{
return ( section >= 0 && section < count() ) ? d->s2i[ section ] : -1;
}
/*!
Moves section \a section to index position \a toIndex.
*/
void TQHeader::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 TQHeader::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 TQHeader::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 TQHeader::isMovingEnabled() const
{
return d->move;
}
/*! \reimp */
void TQHeader::setUpdatesEnabled( bool enable )
{
if ( enable )
calculatePositions();
TQWidget::setUpdatesEnabled( enable );
}
bool TQHeader::reverse () const
{
#if 0
return ( orient == TQt::Horizontal && TQApplication::reverseLayout() );
#else
return FALSE;
#endif
}
/*! \reimp */
void TQHeader::resizeEvent( TQResizeEvent *e )
{
if ( e )
TQWidget::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 TQHeader::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 TQHeader::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 TQHeader::headerWidth() const
{
if ( d->pos_dirty ) {
( (TQHeader*)this )->calculatePositions();
d->pos_dirty = FALSE;
}
return d->lastPos;
}
void TQHeader::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 TQHeader::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 TQHeader::setStretchEnabled( bool b, int section )
{
if ( b )
d->fullSize = section;
else
d->fullSize = -2;
adjustHeaderSize();
}
bool TQHeader::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 TQHeader::isStretchEnabled( int section ) const
{
return d->fullSize == section;
}
/*!
\reimp
*/
void TQHeader::fontChange( const TQFont &oldFont )
{
TQFontMetrics fm = fontMetrics();
d->height = ( orient == Horizontal ) ? fm.lineSpacing() + 6 : fm.width( ' ' );
TQWidget::fontChange( oldFont );
}
#endif // QT_NO_HEADER