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/******************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Charts module.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
******************************************************************************/
#include "chartview.h"
#include <QtGui/QMouseEvent>
#include <QtCore/QDebug>
#include <QtCharts/QAbstractAxis>
#include <QtCharts/QValueAxis>
QT_CHARTS_USE_NAMESPACE
ChartView::ChartView(QWidget *parent)
: QChartView(parent)
{
}
//![1]
void ChartView::keyPressEvent(QKeyEvent *event)
{
switch (event->key()) {
case Qt::Key_Plus:
chart()->zoomIn();
break;
case Qt::Key_Minus:
chart()->zoomOut();
break;
case Qt::Key_Left:
chart()->scroll(-1.0, 0);
break;
case Qt::Key_Right:
chart()->scroll(1.0, 0);
break;
case Qt::Key_Up:
chart()->scroll(0, 1.0);
break;
case Qt::Key_Down:
chart()->scroll(0, -1.0);
break;
case Qt::Key_Space:
switchChartType();
break;
default:
QGraphicsView::keyPressEvent(event);
break;
}
}
//![1]
//![2]
void ChartView::switchChartType()
{
QChart *newChart;
QChart *oldChart = chart();
if (oldChart->chartType() == QChart::ChartTypeCartesian)
newChart = new QPolarChart();
else
newChart = new QChart();
// Move series and axes from old chart to new one
QList<QAbstractSeries *> seriesList = oldChart->series();
QList<QAbstractAxis *> axisList = oldChart->axes();
QList<QPair<qreal, qreal> > axisRanges;
foreach (QAbstractAxis *axis, axisList) {
QValueAxis *valueAxis = static_cast<QValueAxis *>(axis);
axisRanges.append(QPair<qreal, qreal>(valueAxis->min(), valueAxis->max()));
}
foreach (QAbstractSeries *series, seriesList)
oldChart->removeSeries(series);
foreach (QAbstractAxis *axis, axisList) {
oldChart->removeAxis(axis);
newChart->addAxis(axis, axis->alignment());
}
foreach (QAbstractSeries *series, seriesList) {
newChart->addSeries(series);
foreach (QAbstractAxis *axis, axisList)
series->attachAxis(axis);
}
int count = 0;
foreach (QAbstractAxis *axis, axisList) {
axis->setRange(axisRanges[count].first, axisRanges[count].second);
count++;
}
newChart->setTitle(oldChart->title());
setChart(newChart);
delete oldChart;
}
//![2]
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