KDChartWidget.cpp

/*
   KDChart - a multi-platform charting engine
   */
 
/****************************************************************************
 ** Copyright (C) 2001-2003 Klarälvdalens Datakonsult AB.  All rights reserved.
 **
 ** This file is part of the KDChart library.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** Licensees holding valid commercial KDChart licenses may use this file in
 ** accordance with the KDChart Commercial License Agreement provided with
 ** the Software.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.klaralvdalens-datakonsult.se/?page=products for
 **   information about KDChart Commercial License Agreements.
 **
 ** Contact info@klaralvdalens-datakonsult.se if any conditions of this
 ** licensing are not clear to you.
 **
 **********************************************************************/
#include <KDChartWidget.h>
#include <KDChart.h>
#include <KDChartParams.h>
#include <KDChartTableBase.h>
#ifndef KDCHART_MASTER_CVS
#include "KDChartWidget.moc"
#endif
 
#include <tqpainter.h>
 
KDChartWidget::KDChartWidget( TQWidget* parent, const char* name ) :
TQWidget( parent, name ),
    _params( 0 ),
    _data( 0 ),
    _activeData( false ),
_mousePressedOnRegion( 0 )
{
    _dataRegions.setAutoDelete( true );
    setDoubleBuffered( true );
    setBackgroundMode( TQt::NoBackground );
}
 
 
KDChartWidget::KDChartWidget( KDChartParams* params,
        KDChartTableDataBase* data,
        TQWidget* parent, const char* name ) :
TQWidget( parent, name ),
    _params( params ),
    _data( data ),
    _activeData( false ),
_mousePressedOnRegion( 0 )
{
    _dataRegions.setAutoDelete( true );
    setDoubleBuffered( true );
    setBackgroundMode( TQt::NoBackground );
}
 
 
KDChartWidget::~KDChartWidget()
{
    // delete any regions that might still be registered
    _dataRegions.clear();
    KDChartAutoColor::freeInstance();
}
 
void KDChartWidget::paintTo( TQPainter& painter,
        const TQRect* rect )
{
    KDChart::paint( &painter, _params, _data, &_dataRegions, rect );
}
 
void KDChartWidget::print( TQPainter& painter,
        const TQRect* rect )
{
    bool oldOpt=true;
    if( _params ){
        oldOpt = _params->optimizeOutputForScreen();
        _params->setOptimizeOutputForScreen( false );
    }
    bool bOldBuf = _doubleBuffered;
    _doubleBuffered = false;
    paintTo( painter, rect );
    _doubleBuffered = bOldBuf;
    if( _params )
        _params->setOptimizeOutputForScreen( oldOpt );
}
 
void KDChartWidget::paintEvent( TQPaintEvent* event )
{
    if( _doubleBuffered ) {
        // if double-buffering, paint onto the pixmap and copy
        // afterwards
        _buffer.fill( backgroundColor() );
        TQPainter painter( &_buffer );
        paintTo( painter );
        bitBlt( this, event->rect().topLeft(), &_buffer, event->rect() );
    } else {
        // if not double-buffering, paint directly into the window
        TQPainter painter( this );
        paintTo( painter );
    }
}
 
 
void KDChartWidget::mousePressEvent( TQMouseEvent* event )
{
    if ( !_activeData )
        return ;
 
    _mousePressedOnRegion = 0;
    KDChartDataRegion* current = 0;
    //TQPtrListIterator < KDChartDataRegion > it( _dataRegions );
    for( current = _dataRegions.last(); current; current = _dataRegions.prev() ){
    //while ( ( current = it.current() ) ) {
        if ( current->contains( event->pos() ) ) {
            _mousePressedOnRegion = current;
            if ( event->button() == TQt::LeftButton ){
                emit dataLeftPressed( current->row, current->col );
                emit dataLeftPressed( event->pos() );
            }else if ( event->button() == TQt::MidButton ){
                emit dataMiddlePressed( current->row, current->col );
                emit dataMiddlePressed( event->pos() );
            }else{
                emit dataRightPressed( current->row, current->col );
                emit dataRightPressed( event->pos() );
            }
            return;
        }
    }
}
 
 
void KDChartWidget::mouseReleaseEvent( TQMouseEvent* event )
{
    if ( !_activeData )
        return ;
 
    KDChartDataRegion* current = 0;
    TQPtrListIterator < KDChartDataRegion > it( _dataRegions );
    while ( ( current = it.current() ) ) {
        ++it;
        if ( current->contains( event->pos() ) ) {
            if ( event->button() == TQt::LeftButton ) {
                emit dataLeftReleased( current->row, current->col );
                emit dataLeftReleased( event->pos() );
                if ( _mousePressedOnRegion == current ){
                    emit dataLeftClicked( current->row, current->col );
                    emit dataLeftClicked( event->pos() );
                }
            } else if ( event->button() == TQt::MidButton ) {
                emit dataMiddleReleased( current->row, current->col );
                emit dataMiddleReleased( event->pos() );
                if ( _mousePressedOnRegion == current ){
                    emit dataMiddleClicked( current->row, current->col );
                    emit dataMiddleClicked( event->pos() );
                }
            } else {
                emit dataRightReleased( current->row, current->col );
                emit dataRightReleased( event->pos() );
                if ( _mousePressedOnRegion == current ){
                    emit dataRightClicked( current->row, current->col );
                    emit dataRightClicked( event->pos() );
                }
            }
        }
    }
}
 
 
void KDChartWidget::resizeEvent( TQResizeEvent* /*event*/ )
{
    // if we use double-buffering, resize the buffer to the new size,
    // otherwise leave it alone
    if( _doubleBuffered )
        _buffer.resize( size() );
}
 
 
void KDChartWidget::setActiveData( bool active )
{
    _activeData = active;
}
 
 
bool KDChartWidget::isActiveData() const
{
    return _activeData;
}
 
 
void KDChartWidget::setDoubleBuffered( bool doublebuffered )
{
    _doubleBuffered = doublebuffered;
    if( doublebuffered ) {
        // turn double-buffering on
        // resize the buffer to the size of the widget
        _buffer.resize( size() );
    } else {
        // turn double-buffering off
        // minimize the buffer so that it does not take any memory
        _buffer.resize( 0, 0 );
    }
}
 
 
bool KDChartWidget::isDoubleBuffered() const
{
    return _doubleBuffered;
}
 
 
void KDChartWidget::setParams( KDChartParams* params )
{
    _params = params;
}
 
void KDChartWidget::setData( KDChartTableDataBase* data )
{
    _data = data;
}
 
KDChartParams* KDChartWidget::params() const
{
    return _params;
}
 
KDChartTableDataBase* KDChartWidget::data() const
{
    return _data;
}