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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "chartview.h"
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#include <QMouseEvent>
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#include <QDebug>
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ChartView::ChartView(QChart *chart, QWidget *parent) :
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QChartView(chart, parent),
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m_isScrolling(false),
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m_rubberBand(QRubberBand::Rectangle, this)
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{
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// setRubberBand(QChartView::RectangleRubberBand);
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this->chart()->setAnimationOptions(QChart::NoAnimation);
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}
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void ChartView::mousePressEvent(QMouseEvent *event)
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{
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if (event->button() == Qt::RightButton) {
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QRectF rect = chart()->plotArea();
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m_origin = event->pos();
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if (!rect.contains(m_origin))
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return;
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m_rubberBand.setGeometry(QRect(m_origin, QSize()));
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m_rubberBand.show();
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}
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if (event->button() == Qt::LeftButton) {
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m_origin = event->pos();
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m_isScrolling = true;
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}
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event->accept();
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}
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void ChartView::mouseMoveEvent(QMouseEvent *event)
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{
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if (m_rubberBand.isVisible())
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m_rubberBand.setGeometry(QRect(m_origin, event->pos()).normalized());
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if (m_isScrolling) {
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QPointF delta = m_origin - event->pos();
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chart()->scroll(delta.x(), -delta.y());
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m_origin = event->pos();
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}
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}
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void ChartView::mouseReleaseEvent(QMouseEvent *event)
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{
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if (event->button() == Qt::RightButton && m_rubberBand.isVisible()) {
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m_rubberBand.hide();
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QRect rect = m_rubberBand.geometry();
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chart()->zoomIn(rect);
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event->accept();
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}
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if (event->button() == Qt::LeftButton) {
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m_isScrolling = false;
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}
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}
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//![1]
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void ChartView::keyPressEvent(QKeyEvent *event)
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{
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switch (event->key()) {
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case Qt::Key_Plus:
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chart()->zoomIn();
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break;
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case Qt::Key_Minus:
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chart()->zoomOut();
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break;
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//![1]
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case Qt::Key_Left:
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chart()->scroll(-10, 0);
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break;
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case Qt::Key_Right:
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chart()->scroll(10, 0);
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break;
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case Qt::Key_Up:
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chart()->scroll(0, 10);
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break;
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case Qt::Key_Down:
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chart()->scroll(0, -10);
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break;
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default:
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QGraphicsView::keyPressEvent(event);
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break;
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}
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}
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