comparison src/panned.h @ 370:b9c153e00e84

Move source files to src/

+/* -*- 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) 2011 Chris Cannam
+    Copyright (c) 2011 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_lastOrigin;
+    QPointF m_velocity;
+    bool m_dragging;
+    int m_dragTimerMs;
+    QTimer *m_dragTimer;
+
+    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
+