kdgantt

kdganttlegend.cpp

00001 /****************************************************************************
00002  ** Copyright (C) 2001-2006 Klarälvdalens Datakonsult AB.  All rights reserved.
00003  **
00004  ** This file is part of the KD Gantt library.
00005  **
00006  ** This file may be used under the terms of the GNU General Public
00007  ** License versions 2.0 or 3.0 as published by the Free Software
00008  ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
00009  ** included in the packaging of this file.  Alternatively you may (at
00010  ** your option) use any later version of the GNU General Public
00011  ** License if such license has been publicly approved by
00012  ** Klarälvdalens Datakonsult AB (or its successors, if any).
00013  ** 
00014  ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
00015  ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
00016  ** A PARTICULAR PURPOSE. Klarälvdalens Datakonsult AB reserves all rights
00017  ** not expressly granted herein.
00018  ** 
00019  ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
00020  ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
00021  **
00022  **********************************************************************/
00023 #include "kdganttlegend.h"
00024 #include "kdganttlegend_p.h"
00025 
00026 #include "kdganttitemdelegate.h"
00027 
00028 #include <QApplication>
00029 #include <QPainter>
00030 
00031 #include <cassert>
00032 
00033 using namespace KDGantt;
00034 
00045 Legend::Legend( QWidget* parent )
00046     : QAbstractItemView( parent ),
00047       _d( new Private )
00048 {
00049     setItemDelegate( new ItemDelegate( this ) );
00050     setFrameStyle( QFrame::NoFrame );
00051 }
00052 
00054 Legend::~Legend()
00055 {
00056     delete _d;
00057 }
00058 
00059 #define d d_func()
00060 
00061 QModelIndex Legend::indexAt( const QPoint& point ) const
00062 {
00063     return QModelIndex();
00064 }
00065 
00066 QRect Legend::visualRect( const QModelIndex& index ) const
00067 {
00068     return QRect();
00069 }
00070 
00071 QSize Legend::sizeHint() const
00072 {
00073     return measureItem( rootIndex() );
00074 }
00075 
00076 QSize Legend::minimumSizeHint() const
00077 {
00078     return measureItem( rootIndex() );
00079 }
00080 
00081 void Legend::setModel( QAbstractItemModel* model )
00082 {
00083     if( this->model() != 0 )
00084     {
00085         disconnect( this->model(), SIGNAL( dataChanged( QModelIndex, QModelIndex ) ), this, SLOT( modelDataChanged() ) );
00086         disconnect( this->model(), SIGNAL( rowsRemoved( QModelIndex, int, int ) ), this, SLOT( modelDataChanged() ) );
00087         disconnect( this->model(), SIGNAL( columnsRemoved( QModelIndex, int, int ) ), this, SLOT( modelDataChanged() ) );
00088     }
00089 
00090     QAbstractItemView::setModel( model );
00091     d->proxyModel.setSourceModel( model );
00092 
00093     if( this->model() != 0 )
00094     {
00095         connect( this->model(), SIGNAL( dataChanged( QModelIndex, QModelIndex ) ), this, SLOT( modelDataChanged() ) );
00096         connect( this->model(), SIGNAL( rowsRemoved( QModelIndex, int, int ) ), this, SLOT( modelDataChanged() ) );
00097         connect( this->model(), SIGNAL( columnsRemoved( QModelIndex, int, int ) ), this, SLOT( modelDataChanged() ) );
00098     }
00099 
00100 }
00101 
00104 void Legend::modelDataChanged()
00105 {
00106     updateGeometry();
00107     viewport()->update();
00108 }
00109 
00110 void Legend::paintEvent( QPaintEvent* event )
00111 {
00112     Q_UNUSED( event );
00113     // no model, no legend...
00114     if( model() == 0 )
00115         return;
00116 
00117     QPainter p( viewport() );
00118     p.fillRect( viewport()->rect(), palette().color( QPalette::Window ) );
00119     drawItem( &p, rootIndex() );
00120 }
00121 
00125 StyleOptionGanttItem Legend::getStyleOption( const QModelIndex& index ) const
00126 {
00127     StyleOptionGanttItem opt;
00128     opt.displayPosition = StyleOptionGanttItem::Right;
00129     opt.displayAlignment = Qt::Alignment( d->proxyModel.data( index, Qt::TextAlignmentRole ).toInt() );
00130     opt.text = index.model()->data( index, LegendRole ).toString();
00131     opt.font = qVariantValue< QFont >( index.model()->data( index, Qt::FontRole ) );
00132     return opt;
00133 }
00134 
00140 QRect Legend::drawItem( QPainter* painter, const QModelIndex& index, const QPoint& pos ) const
00141 {
00142     int xPos = pos.x();
00143     int yPos = pos.y();
00144 
00145     if( index.isValid() && index.model() == &d->proxyModel )
00146     {
00147         ItemDelegate* const delegate = qobject_cast< ItemDelegate* >( itemDelegate( index ) );
00148         assert( delegate != 0 );
00149         const QRect r( pos, measureItem( index, false ) );
00150         StyleOptionGanttItem opt = getStyleOption( index );
00151         opt.rect = r;
00152         opt.rect.setWidth( r.height() );
00153         opt.itemRect = opt.rect;
00154         opt.boundingRect = r;
00155         opt.boundingRect.setWidth( r.width() + r.height() );
00156         if( !opt.text.isNull() )
00157             delegate->paintGanttItem( painter, opt, index );
00158 
00159         xPos = r.right();
00160         yPos = r.bottom();
00161     }
00162 
00163     
00164     const int rowCount = d->proxyModel.rowCount( index );
00165     for( int row = 0; row < rowCount; ++row )
00166     {
00167         const QRect r = drawItem( painter, d->proxyModel.index( row, 0, index ), QPoint( pos.x(), yPos ) );
00168         xPos = qMax( xPos, r.right() );
00169         yPos = qMax( yPos, r.bottom() );
00170     }
00171 
00172     return QRect( pos, QPoint( xPos, yPos ) );
00173 }
00174 
00178 QSize Legend::measureItem( const QModelIndex& index, bool recursive ) const
00179 {
00180     if( model() == 0 )
00181         return QSize();
00182 
00183     QSize baseSize;
00184     if( index.model() != 0 )
00185     {
00186         QFontMetrics fm( qVariantValue< QFont >( index.model()->data( index, Qt::FontRole ) ) );
00187         const QString text = index.model()->data( index, LegendRole ).toString();
00188         if( !text.isNull() )
00189             baseSize += QSize( fm.width( text ) + fm.height() + 2, fm.height() + 2 );
00190     }
00191 
00192     if( !recursive )
00193         return baseSize;
00194 
00195     QSize childrenSize;
00196 
00197     const int rowCount = d->proxyModel.rowCount( index );
00198     for( int row = 0; row < rowCount; ++row )
00199     {
00200         const QSize childSize = measureItem( d->proxyModel.index( row, 0, index ) );
00201         childrenSize.setWidth( qMax( childrenSize.width(), childSize.width() ) );
00202         childrenSize.rheight() += childSize.height();
00203     }
00204     return baseSize + childrenSize;
00205 }
kdgantt

kdganttlegend.cpp

kdgantt

kdepim
