KD Chart 2: KDChartAbstractAreaWidget.cpp Source File

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# KDChartAbstractAreaWidget.cpp

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    00001 /****************************************************************************
    00002  ** Copyright (C) 2007 Klarälvdalens Datakonsult AB.  All rights reserved.
    00003  **
    00004  ** This file is part of the KD Chart library.
    00005  **
    00006  ** This file may be distributed and/or modified under the terms of the
    00007  ** GNU General Public License version 2 as published by the Free Software
    00008  ** Foundation and appearing in the file LICENSE.GPL included in the
    00009  ** packaging of this file.
    00010  **
    00011  ** Licensees holding valid commercial KD Chart licenses may use this file in
    00012  ** accordance with the KD Chart Commercial License Agreement provided with
    00013  ** the Software.
    00014  **
    00015  ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    00016  ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    00017  **
    00018  ** See http://www.kdab.net/kdchart for
    00019  **   information about KDChart Commercial License Agreements.
    00020  **
    00021  ** Contact info@kdab.net if any conditions of this
    00022  ** licensing are not clear to you.
    00023  **
    00024  **********************************************************************/
    00025
    00026 #include "KDChartAbstractAreaWidget.h"
    00027 #include "KDChartAbstractAreaWidget_p.h"
    00028
    00029 #include <KDABLibFakes>
    00030
    00031
    00032 using namespace KDChart;
    00033
    00034
    00035 AbstractAreaWidget::Private::Private()
    00036 {
    00037     // this block left empty intentionally
    00038 }
    00039
    00040 AbstractAreaWidget::Private::~Private()
    00041 {
    00042     // this block left empty intentionally
    00043 }
    00044
    00045
    00046 void AbstractAreaWidget::Private::resizeLayout(
    00047     AbstractAreaWidget* widget, const QSize& size )
    00048 {
    00049     if( size == currentLayoutSize ) return;
    00050
    00051     currentLayoutSize = size;
    00052
    00053     // Now we call adjust the size, for the inner parts of the widget.
    00054     int left;
    00055     int top;
    00056     int right;
    00057     int bottom;
    00058     widget->getFrameLeadings( left, top, right, bottom );
    00059     const QSize innerSize( size.width() - left - right,
    00060                            size.height() - top - bottom );
    00061     // With this adjusted size we call the real resizeLayout method,
    00062     // which normally will call resizeLayout( size ) in the derived class
    00063     // - which in turn is the place to resize the layout member variable
    00064     // of that class.
    00065     widget->resizeLayout( innerSize );
    00066 }
    00067
    00068
    00069 AbstractAreaWidget::AbstractAreaWidget( QWidget* parent )
    00070     : QWidget( parent )
    00071     , AbstractAreaBase( new Private() )
    00072 {
    00073     init();
    00074 }
    00075
    00076 AbstractAreaWidget::~AbstractAreaWidget()
    00077 {
    00078     // this block left empty intentionally
    00079 }
    00080
    00081 void AbstractAreaWidget::init()
    00082 {
    00083     // this block left empty intentionally
    00084 }
    00085
    00086 void AbstractAreaWidget::needSizeHint()
    00087 {
    00088     // this block left empty intentionally
    00089 }
    00090
    00091 #define d d_func()
    00092
    00093 void AbstractAreaWidget::resizeLayout( const QSize& size )
    00094 {
    00095     Q_UNUSED( size );
    00096     // this block left empty intentionally
    00097 }
    00098
    00099 void AbstractAreaWidget::paintEvent( QPaintEvent* event )
    00100 {
    00101     Q_UNUSED( event );
    00102     QPainter painter( this );
    00103     if( size() != d->currentLayoutSize ){
    00104         d->resizeLayout( this, size() );
    00105     }
    00106     paintAll( painter );
    00107 }
    00108
    00109 void AbstractAreaWidget::paintIntoRect( QPainter& painter, const QRect& rect )
    00110 {
    00111     //qDebug() << "AbstractAreaWidget::paintIntoRect() called rect=" << rect;
    00112
    00113     if( rect.isEmpty() ) return;
    00114
    00115     d->resizeLayout( this, rect.size() );
    00116
    00117     const QPoint translation( rect.topLeft() );
    00118     painter.translate( translation );
    00119     paintAll( painter );
    00120     painter.translate( -translation.x(), -translation.y() );
    00121
    00122 /*
    00123     // make sure, the contents of the widget have been set up,
    00124     // so we get a usefull geometry:
    00125     needSizeHint();
    00126
    00127     const QRect oldGeometry( layout()->geometry() );
    00128     const QRect newGeo( QPoint(0,0), rect.size() );
    00129     const bool mustChangeGeo = layout() && oldGeometry != newGeo;
    00130     if( mustChangeGeo )
    00131         layout()->setGeometry( newGeo );
    00132     painter.translate( rect.left(), rect.top() );
    00133     paintAll( painter );
    00134     painter.translate( -rect.left(), -rect.top() );
    00135     if( mustChangeGeo )
    00136         layout()->setGeometry( oldGeometry );
    00137 */
    00138 }
    00139
    00140 void AbstractAreaWidget::forceRebuild()
    00141 {
    00142     //bloc left empty intentionally
    00143 }
    00144
    00145 void AbstractAreaWidget::paintAll( QPainter& painter )
    00146 {
    00147     //qDebug() << "AbstractAreaWidget::paintAll() called";
    00148
    00149     // Paint the background and frame
    00150     paintBackground( painter, QRect(QPoint(0, 0), size() ) );
    00151     paintFrame(      painter, QRect(QPoint(0, 0), size() ) );
    00152
    00153 /*
    00154     we do not call setContentsMargins() now,
    00155     but we call resizeLayout() whenever the size or the frame has changed
    00156
    00157     // adjust the widget's content margins,
    00158     // to be sure all content gets calculated
    00159     // to fit into the inner rectangle
    00160     const QRect oldGeometry( areaGeometry()  );
    00161     const QRect inner( innerRect() );
    00162     //qDebug() << "areaGeometry():" << oldGeometry
    00163     //         << "  contentsRect():" << contentsRect() << "  inner:" << inner;
    00164     if( contentsRect() != inner ){
    00165         //qDebug() << "old contentsRect():" << contentsRect() << "  new innerRect:" << inner;
    00166         setContentsMargins(
    00167             inner.left(),
    00168             inner.top(),
    00169             oldGeometry.width() -inner.width()-1,
    00170             oldGeometry.height()-inner.height()-1 );
    00171         //forceRebuild();
    00172     }
    00173 */
    00174     int left;
    00175     int top;
    00176     int right;
    00177     int bottom;
    00178     getFrameLeadings( left, top, right, bottom );
    00179     const QPoint translation( left, top );
    00180     painter.translate( translation );
    00181     paint( &painter );
    00182     painter.translate( -translation.x(), -translation.y() );
    00183      //qDebug() << "AbstractAreaWidget::paintAll() done.";
    00184 }
    00185
    00186 QRect AbstractAreaWidget::areaGeometry() const
    00187 {
    00188     return geometry();
    00189 }
    00190
    00191 void AbstractAreaWidget::positionHasChanged()
    00192 {
    00193     emit positionChanged( this );
    00194 }
    00195 /*
    00196 void AbstractAreaWidget::setGeometry( const QRect & rect )
    00197 {
    00198     qDebug() << "AbstractAreaWidget::setGeometry("<< rect << ") called";
    00199     const bool bChanged = rect != geometry();
    00200     QWidget::setGeometry( rect );
    00201     if( bChanged )
    00202         forceRebuild();
    00203 }
    00204 */