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/**
* 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 );
}
}
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