chartview.cpp
112 lines
| 2.8 KiB
| text/x-c
|
CppLexer
Michal Klocek
|
r1722 | /**************************************************************************** | ||
| ** | ||||
| ** 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) : | ||||
Marek Rosa
|
r1818 | QChartView(chart, parent), | ||
| m_isScrolling(false), | ||||
| m_rubberBand(QRubberBand::Rectangle, this) | ||||
|
Michal Klocek
|
r1722 | { | ||
| // 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; | ||||
| } | ||||
| } | ||||