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/****************************************************************************
**
** 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
** $QT_END_LICENSE$
**
****************************************************************************/
#include "chartview.h"
#include <QMouseEvent>
#include <QDebug>
ChartView::ChartView(QChart *chart, QWidget *parent) :
QChartView(chart, parent), m_rubberBand(QRubberBand::Rectangle, this), m_isScrolling(
false)
{
// setRubberBand(QChartView::RectangleRubberBand);
this->chart()->setAnimationOptions(QChart::NoAnimation);
}
void ChartView::mousePressEvent(QMouseEvent *event)
{
if (event->button() == Qt::RightButton) {
QRectF rect = chart()->plotArea();
m_origin = event->pos();
if (!rect.contains(m_origin))
return;
m_rubberBand.setGeometry(QRect(m_origin, QSize()));
m_rubberBand.show();
}
if (event->button() == Qt::LeftButton) {
m_origin = event->pos();
m_isScrolling = true;
}
event->accept();
}
void ChartView::mouseMoveEvent(QMouseEvent *event)
{
if (m_rubberBand.isVisible())
m_rubberBand.setGeometry(QRect(m_origin, event->pos()).normalized());
if (m_isScrolling) {
QPointF delta = m_origin - event->pos();
chart()->scroll(delta.x(),-delta.y());
m_origin = event->pos();
}
}
void ChartView::mouseReleaseEvent(QMouseEvent *event)
{
if (event->button() == Qt::RightButton && m_rubberBand.isVisible()) {
m_rubberBand.hide();
QRect rect = m_rubberBand.geometry();
chart()->zoomIn(rect);
event->accept();
}
if (event->button() == Qt::LeftButton) {
m_isScrolling = false;
}
}
//![1]
void ChartView::keyPressEvent(QKeyEvent *event)
{
switch (event->key()) {
case Qt::Key_Plus:
chart()->zoomIn();
break;
case Qt::Key_Minus:
chart()->zoomOut();
break;
//![1]
case Qt::Key_Left:
chart()->scroll(-10, 0);
break;
case Qt::Key_Right:
chart()->scroll(10, 0);
break;
case Qt::Key_Up:
chart()->scroll(0, 10);
break;
case Qt::Key_Down:
chart()->scroll(0, -10);
break;
default:
QGraphicsView::keyPressEvent(event);
break;
}
}
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