chartview.cpp
89 lines
| 2.3 KiB
| text/x-c
|
CppLexer
Michal Klocek
|
r749 | /**************************************************************************** | ||
Jani Honkonen
|
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
|
r749 | |||
#include "chartview.h" | ||||
#include <QMouseEvent> | ||||
ChartView::ChartView(QChart *chart, QWidget *parent) : | ||||
QChartView(chart, parent), m_rubberBand(QRubberBand::Rectangle, this), m_chart(chart) | ||||
{ | ||||
} | ||||
void ChartView::mousePressEvent(QMouseEvent *event) | ||||
{ | ||||
if (event->button() != Qt::LeftButton) | ||||
return; | ||||
m_origin = event->pos(); | ||||
m_rubberBand.setGeometry(QRect(m_origin, QSize())); | ||||
m_rubberBand.show(); | ||||
event->accept(); | ||||
} | ||||
void ChartView::mouseMoveEvent(QMouseEvent *event) | ||||
{ | ||||
if (m_rubberBand.isVisible()) | ||||
m_rubberBand.setGeometry(QRect(m_origin, event->pos()).normalized()); | ||||
} | ||||
void ChartView::mouseReleaseEvent(QMouseEvent *event) | ||||
{ | ||||
if (event->button() == Qt::LeftButton && m_rubberBand.isVisible()) { | ||||
m_rubberBand.hide(); | ||||
QRect rect = m_rubberBand.geometry(); | ||||
m_chart->zoomIn(rect); | ||||
event->accept(); | ||||
} | ||||
if (event->button() == Qt::RightButton) { | ||||
m_chart->zoomOut(); | ||||
} | ||||
} | ||||
Tero Ahola
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r966 | //![1] | ||
Michal Klocek
|
r749 | void ChartView::keyPressEvent(QKeyEvent *event) | ||
{ | ||||
switch (event->key()) { | ||||
case Qt::Key_Plus: | ||||
m_chart->zoomIn(); | ||||
break; | ||||
case Qt::Key_Minus: | ||||
m_chart->zoomOut(); | ||||
break; | ||||
Tero Ahola
|
r966 | //![1] | ||
Michal Klocek
|
r749 | case Qt::Key_Left: | ||
m_chart->scrollLeft(); | ||||
break; | ||||
case Qt::Key_Right: | ||||
m_chart->scrollRight(); | ||||
break; | ||||
case Qt::Key_Up: | ||||
m_chart->scrollUp(); | ||||
break; | ||||
case Qt::Key_Down: | ||||
m_chart->scrollDown(); | ||||
break; | ||||
default: | ||||
QGraphicsView::keyPressEvent(event); | ||||
break; | ||||
} | ||||
} | ||||