chartview.cpp
106 lines
| 3.5 KiB
| text/x-c
|
CppLexer
Michal Klocek
|
r749 | /**************************************************************************** | ||
| ** | ||||
| ** 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. | ||||
| ** | ||||
| ** $QT_BEGIN_LICENSE:BSD$ | ||||
| ** You may use this file under the terms of the BSD license as follows: | ||||
| ** | ||||
| ** "Redistribution and use in source and binary forms, with or without | ||||
| ** modification, are permitted provided that the following conditions are | ||||
| ** met: | ||||
| ** * Redistributions of source code must retain the above copyright | ||||
| ** notice, this list of conditions and the following disclaimer. | ||||
| ** * Redistributions in binary form must reproduce the above copyright | ||||
| ** notice, this list of conditions and the following disclaimer in | ||||
| ** the documentation and/or other materials provided with the | ||||
| ** distribution. | ||||
| ** * Neither the name of Digia nor the names of its contributors | ||||
| ** may be used to endorse or promote products derived from this | ||||
| ** software without specific prior written permission. | ||||
| ** | ||||
| ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||||
| ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||||
| ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||||
| ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||||
| ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||||
| ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||||
| ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||||
| ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||||
| ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||||
| ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||||
| ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." | ||||
| ** $QT_END_LICENSE$ | ||||
| ** | ||||
| ****************************************************************************/ | ||||
| #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(); | ||||
| } | ||||
| } | ||||
| void ChartView::keyPressEvent(QKeyEvent *event) | ||||
| { | ||||
| switch (event->key()) { | ||||
| case Qt::Key_Plus: | ||||
| m_chart->zoomIn(); | ||||
| break; | ||||
| case Qt::Key_Minus: | ||||
| m_chart->zoomOut(); | ||||
| break; | ||||
| 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; | ||||
| } | ||||
| } | ||||