Mercurial > hg > easyhg
view src/panned.h @ 653:d863c00020a9
Add extra files from hg dist
author | Chris Cannam |
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date | Thu, 24 Jan 2013 16:05:31 +0000 |
parents | ae67ea0af696 |
children |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* EasyMercurial Based on HgExplorer by Jari Korhonen Copyright (c) 2010 Jari Korhonen Copyright (c) 2013 Chris Cannam Copyright (c) 2013 Queen Mary, University of London This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #ifndef _PANNED_H_ #define _PANNED_H_ #include <QGraphicsView> class QWheelEvent; class QEvent; class QTimer; class Panned : public QGraphicsView { Q_OBJECT public: Panned(); virtual ~Panned() { } virtual void setScene(QGraphicsScene *s); signals: void pannedRectChanged(QRectF); void wheelEventReceived(QWheelEvent *); void pannedContentsScrolled(); void mouseLeaves(); public slots: void slotSetPannedRect(QRectF); void slotEmulateWheelEvent(QWheelEvent *ev); void zoomIn(); void zoomOut(); private slots: void dragTimerTimeout(); protected: QRectF m_pannedRect; QPoint m_lastDragPos; QPoint m_lastDragStart; QPoint m_lastOrigin; QPointF m_velocity; bool m_dragging; int m_dragTimerMs; QTimer *m_dragTimer; enum DragDirection { UnknownDrag, HorizontalDrag, VerticalDrag, FreeDrag }; DragDirection m_dragDirection; void updateDragDirection(QPoint); virtual void mousePressEvent(QMouseEvent *); virtual void mouseMoveEvent(QMouseEvent *); virtual void mouseReleaseEvent(QMouseEvent *); virtual void paintEvent(QPaintEvent *); virtual void resizeEvent(QResizeEvent *); virtual void drawForeground(QPainter *, const QRectF &); virtual void wheelEvent(QWheelEvent *); virtual void leaveEvent(QEvent *); }; #endif