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Hide value axis in QML Weather demo
Hide value axis in QML Weather demo
Michal Klocek - - Load All Authors

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r1553:aa0203a138dd
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chartview.cpp
100 lines | 2.7 KiB | text/x-c | CppLexer
/ examples / zoomlinechart / chartview.cpp
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Michal Klocek
Add missing files from zoomchart example
 r749 /****************************************************************************
Jani Honkonen
Add/modify license headers
 r830 **
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** 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
** $QT_END_LICENSE$
**
****************************************************************************/
Michal Klocek
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 r749
#include "chartview.h"
#include <QMouseEvent>
ChartView::ChartView(QChart *chart, QWidget *parent) :
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 r1187 QChartView(chart, parent),
m_isTouching(false)
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 r749 {
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 r1187 setRubberBand(QChartView::RectangleRubberBand);
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 r749 }
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 r1187 bool ChartView::viewportEvent(QEvent *event)
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 r749 {
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 r1187 if (event->type() == QEvent::TouchBegin) {
// By default touch events are converted to mouse events. So
// after this event we will get a mouse event also but we want
// to handle touch events as gestures only. So we need this safeguard
// to block mouse events that are actually generated from touch.
m_isTouching = true;
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Jani Honkonen
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 r1187 // Turn off animations when handling gestures they
// will only slow us down.
chart()->setAnimationOptions(QChart::NoAnimation);
}
return QChartView::viewportEvent(event);
}
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Jani Honkonen
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 r1187 void ChartView::mousePressEvent(QMouseEvent *event)
{
if (m_isTouching)
return;
QChartView::mousePressEvent(event);
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 r749 }
void ChartView::mouseMoveEvent(QMouseEvent *event)
{
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 r1187 if (m_isTouching)
return;
QChartView::mouseMoveEvent(event);
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void ChartView::mouseReleaseEvent(QMouseEvent *event)
{
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 r1187 if (m_isTouching)
m_isTouching = false;
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 r749
Jani Honkonen
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 r1187 // Because we disabled animations when touch event was detected
// we must put them back on.
chart()->setAnimationOptions(QChart::SeriesAnimations);
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 r1187 QChartView::mouseReleaseEvent(event);
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 r749 }
Tero Ahola
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 r966 //![1]
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 r749 void ChartView::keyPressEvent(QKeyEvent *event)
{
switch (event->key()) {
case Qt::Key_Plus:
Jani Honkonen
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 r1187 chart()->zoomIn();
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 r749 break;
case Qt::Key_Minus:
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 r1187 chart()->zoomOut();
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 r749 break;
Tero Ahola
Tuning zoom example (key zooming was removed from QChartView)
 r966 //![1]
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 r749 case Qt::Key_Left:
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 r1553 chart()->scroll(-10,0);
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 r749 break;
case Qt::Key_Right:
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 r1553 chart()->scroll(10,0);
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 r749 break;
case Qt::Key_Up:
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 r1553 chart()->scroll(0,10);
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 r749 break;
case Qt::Key_Down:
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 r1553 chart()->scroll(0,-10);
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default:
QGraphicsView::keyPressEvent(event);
break;
}
}