comparison widgets/LevelPanToolButton.h @ 929:20698aa6a517 tonioni

Introduce level/pan toolbar buttons

+/* -*- 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 LEVEL_PAN_TOOLBUTTON_H
+#define LEVEL_PAN_TOOLBUTTON_H
+
+#include <QToolButton>
+
+class LevelPanWidget;
+
+class LevelPanToolButton : public QToolButton
+{
+    Q_OBJECT
+
+public:
+    LevelPanToolButton(QWidget *parent = 0);
+    ~LevelPanToolButton();
+    
+    /// Return level as a gain value in the range [0,1]
+    float getLevel() const; 
+    
+    /// Return pan as a value in the range [-1,1]
+    float getPan() const;
+
+    void setImageSize(int pixels);
+			
+public slots:
+    /// Set level in the range [0,1] -- will be rounded
+    void setLevel(float);
+
+    /// Set pan in the range [-1,1] -- will be rounded
+    void setPan(float);
+
+    /// Redraw icon for toolbar button based on level-pan widget contents
+    void redraw();
+
+signals:
+    void levelChanged(float);
+    void panChanged(float);
+
+protected:
+    LevelPanWidget *m_lpw;
+    int m_pixels;
+};
+
+#endif