comparison panner.h @ 45:4286836bb3c9

* Some more work on graph layout; ensure LANG is set for parseable UTF8 output when running Hg

+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+    Copyright 2000-2010 the Rosegarden development team.
+ 
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+ 
+    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 _RG_PANNER_H_
+#define _RG_PANNER_H_
+
+#include <QGraphicsView>
+
+class Panned;
+
+class Panner : public QGraphicsView
+{
+    Q_OBJECT
+
+public:
+    Panner();
+    virtual ~Panner() { }
+
+    virtual void setScene(QGraphicsScene *);
+
+    void connectToPanned(Panned *p);
+
+signals:
+    void pannedRectChanged(QRectF);
+    void pannerChanged(QRectF);
+    void zoomIn();
+    void zoomOut();
+
+public slots:
+    void slotSetPannedRect(QRectF);
+
+protected slots:
+    void slotSceneRectChanged(const QRectF &);
+
+protected:
+    QRectF m_pannedRect;
+
+    void moveTo(QPoint);
+
+    virtual void paintEvent(QPaintEvent *);
+    virtual void mousePressEvent(QMouseEvent *e);
+    virtual void mouseMoveEvent(QMouseEvent *e);
+    virtual void mouseReleaseEvent(QMouseEvent *e);
+    virtual void mouseDoubleClickEvent(QMouseEvent *e);
+    virtual void wheelEvent(QWheelEvent *e);
+
+    virtual void resizeEvent(QResizeEvent *);
+
+    virtual void updateScene(const QList<QRectF> &);
+    virtual void drawItems(QPainter *, int, QGraphicsItem *[],
+                           const QStyleOptionGraphicsItem []);
+
+    bool m_clicked;
+    QRectF m_clickedRect;
+    QPoint m_clickedPoint;
+
+    QPixmap m_cache;
+};
+
+#endif
+