chartview.cpp
111 lines
| 2.9 KiB
| text/x-c
|
CppLexer
Miikka Heikkinen
|
r2483 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2013 Digia Plc | ||||
| ** All rights reserved. | ||||
| ** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
| ** | ||||
|
Miikka Heikkinen
|
r2574 | ** This file is part of the Qt Enterprise Charts Add-on. | ||
|
Miikka Heikkinen
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r2483 | ** | ||
| ** $QT_BEGIN_LICENSE$ | ||||
|
Miikka Heikkinen
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r2574 | ** Licensees holding valid Qt Enterprise licenses may use this file in | ||
| ** accordance with the Qt Enterprise License Agreement provided with the | ||||
|
Miikka Heikkinen
|
r2483 | ** Software or, alternatively, in accordance with the terms contained in | ||
| ** a written agreement between you and Digia. | ||||
| ** | ||||
| ** If you have questions regarding the use of this file, please use | ||||
| ** contact form at http://qt.digia.com | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
| #include "chartview.h" | ||||
| #include <QMouseEvent> | ||||
| #include <QDebug> | ||||
| #include <QAbstractAxis> | ||||
| #include <QValueAxis> | ||||
| QTCOMMERCIALCHART_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(); | ||||
|
Miikka Heikkinen
|
r2485 | QList<QPair<qreal, qreal> > axisRanges; | ||
|
Miikka Heikkinen
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r2483 | |||
| 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] | ||||