File indexing completed on 2024-05-19 15:26:52

 /**
  * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB.  All rights reserved.
  *
  * This file is part of the KD Chart library.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "framewidget.h"
 
 #include <KChartChart>
 
 #include <QDebug>
 #include <QPainter>
 
 FrameWidget::FrameWidget( QWidget* parent, Qt::WindowFlags f )
     : QWidget( parent, f )
     , mChart( nullptr )
 {
     // this bloc left empty intentionally
 }
 
 void FrameWidget::setChart( KChart::Chart* chart )
 {
     mChart = chart;
     // This is necessary because Chart can't automatically schedule somebody else (this object) to
     // call its custom paint method.
     connect( mChart, SIGNAL(propertiesChanged()), SLOT(update()) );
 }
 
 void FrameWidget::paintEvent( QPaintEvent* e )
 {
     if ( !mChart ) {
         QWidget::paintEvent( e );
     } else {
         QPainter painter( this );
 
         const int wid = 64;
         const QRect r( rect() );
         const QPen oldPen( painter.pen() );
         const QBrush oldBrush( painter.brush() );
         // paint below the chart
         painter.setPen( QPen( Qt::NoPen ) );
         painter.setBrush( QBrush( QColor( 0xd0, 0xd0, 0xff ) ) );
         painter.drawEllipse( r.left(),                       r.top(),                        wid, wid );
         painter.drawEllipse( r.left() + r.width() - wid - 1, r.top(),                        wid, wid );
         painter.drawEllipse( r.left(),                       r.top() + r.height() - wid - 1, wid, wid );
         painter.drawEllipse( r.left() + r.width() - wid - 1, r.top() + r.height() - wid - 1, wid, wid );
         painter.setBrush( oldBrush );
         painter.setPen( oldPen );
         // paint the chart
         mChart->paint( &painter, QRect( r.left() + wid / 2, r.top() + wid / 2,
                                         r.width() - wid,    r.height() - wid ) );
         // paint over the chart
         painter.setPen( QPen( Qt::NoPen ) );
         painter.setBrush( QBrush( QColor( 0xd0, 0xff, 0xff ) ) );
         const int wid2 = 40;
         const int gap = ( wid - wid2 ) / 2;
         painter.drawEllipse( r.left() + gap,                       r.top() + gap,                        wid2, wid2 );
         painter.drawEllipse( r.left() + r.width() - wid + gap - 1, r.top() + gap,                        wid2, wid2 );
         painter.drawEllipse( r.left() + gap,                       r.top() + r.height() - wid + gap - 1, wid2, wid2 );
         painter.drawEllipse( r.left() + r.width() - wid + gap - 1, r.top() + r.height() - wid + gap - 1, wid2, wid2 );
         painter.setBrush( oldBrush );
         painter.setPen( oldPen );
     }
 }