diff widgets/Fader.h @ 0:fc9323a41f5a

start base : Sonic Visualiser sv1-1.0rc1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widgets/Fader.h	Fri May 11 09:08:14 2007 +0000
@@ -0,0 +1,87 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, 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 FADER_H
+#define FADER_H
+
+/**
+ * Horizontal audio fader and meter widget.
+ * Based on the vertical fader and meter widget from:
+ * 
+ * Hydrogen
+ * Copyright(c) 2002-2005 by Alex >Comix< Cominu [[e-mail]]
+ * http://www.hydrogen-music.org
+ */
+
+
+#include <string>
+#include <iostream>
+
+#include <QWidget>
+#include <QPixmap>
+#include <QMouseEvent>
+#include <QWheelEvent>
+#include <QPaintEvent>
+
+class Fader : public QWidget
+{
+    Q_OBJECT
+
+public:
+    Fader(QWidget *parent, bool withoutKnob = false);
+    ~Fader();
+
+    void setValue(float newValue);
+    float getValue();
+
+    void setPeakLeft(float);
+    float getPeakLeft() { return m_peakLeft; }
+
+    void setPeakRight(float);
+    float getPeakRight() { return m_peakRight; }
+
+signals:
+    void valueChanged(float); // 0.0 -> 1.0
+
+    void mouseEntered();
+    void mouseLeft();
+
+protected:
+    virtual void mousePressEvent(QMouseEvent *ev);
+    virtual void mouseDoubleClickEvent(QMouseEvent *ev);
+    virtual void mouseMoveEvent(QMouseEvent *ev);
+    virtual void mouseReleaseEvent(QMouseEvent *ev);
+    virtual void wheelEvent( QWheelEvent *ev );
+    virtual void paintEvent(QPaintEvent *ev);
+    virtual void enterEvent(QEvent *);
+    virtual void leaveEvent(QEvent *);
+
+    int getMaxX() const;
+
+    bool m_withoutKnob;
+    float m_value;
+    float m_peakLeft;
+    float m_peakRight;
+
+    bool m_mousePressed;
+    int m_mousePressX;
+    float m_mousePressValue;
+
+    QPixmap m_back;
+    QPixmap m_leds;
+    QPixmap m_knob;
+    QPixmap m_clip;
+};
+
+#endif