comparison widgets/Panner.h @ 0:2a4f26e85b4c

initial import

+/* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    A waveform viewer and audio annotation editor.
+    Chris Cannam, Queen Mary University of London, 2005
+    
+    This is experimental software.  Not for distribution.
+*/
+
+#ifndef _PAN_WIDGET_H_
+#define _PAN_WIDGET_H_
+
+#include "base/View.h"
+
+#include <QPoint>
+
+class QWidget;
+class QPaintEvent;
+class Layer;
+class View;
+
+#include <map>
+
+class Panner : public View
+{
+    Q_OBJECT
+
+public:
+    Panner(QWidget *parent = 0);
+
+    void registerView(View *widget);
+    void unregisterView(View *widget);
+
+    virtual QString getPropertyContainerIconName() const { return "panner"; }
+
+public slots:
+    virtual void modelChanged(size_t startFrame, size_t endFrame);
+    virtual void modelReplaced();
+
+    virtual void viewManagerCentreFrameChanged(void *, unsigned long, bool);
+    virtual void viewManagerZoomLevelChanged(void *, unsigned long, bool);
+    virtual void viewManagerPlaybackFrameChanged(unsigned long);
+
+protected:
+    virtual void paintEvent(QPaintEvent *e);
+    virtual void mousePressEvent(QMouseEvent *e);
+    virtual void mouseReleaseEvent(QMouseEvent *e);
+    virtual void mouseMoveEvent(QMouseEvent *e);
+
+    QPoint m_clickPos;
+    QPoint m_mousePos;
+    bool m_clickedInRange;
+    size_t m_dragCentreFrame;
+    
+    typedef std::pair<size_t, int> WidgetRec; // centre, zoom (-1 = invalid)
+    typedef std::map<void *, WidgetRec> WidgetMap;
+    WidgetMap m_widgets;
+};
+
+#endif
+