first re-commit.

swvolumewidget.h

@@ -0,0 +1,58 @@
+/***************************************************************************
+
+    source::worx raDIYo
+    Copyright © 2020-2022 c.holzheuer
+    chris@sourceworx.org
+
+    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.
+
+***************************************************************************/
+
+
+#ifndef SWVOLUMEWIDGET_H
+#define SWVOLUMEWIDGET_H
+
+//#include <QWidget>
+#include <swbarwidget.h>
+
+
+/**
+ * @brief Widget zur Darstellung der Lautstärke
+ */
+
+class SWVolumeWidget : public SWBarWidget
+{
+    Q_OBJECT
+
+public:
+
+    explicit SWVolumeWidget( QWidget* parent = nullptr );
+    virtual ~SWVolumeWidget() = default;
+
+    void paintEvent( QPaintEvent* event ) override;
+
+signals:
+
+   void deltaChanged( int newValue );
+
+public slots:
+
+    void onDialDeltaChanged( int delta ) override;
+
+protected:
+
+    void mousePressEvent( QMouseEvent* event ) override;
+    void mouseMoveEvent( QMouseEvent* event ) override;
+    void mouseReleaseEvent( QMouseEvent* event ) override;
+
+
+    const int _frameOffset = 2;
+    bool      _moving = false;
+
+};
+
+
+#endif // SWVOLUMEWIDGET_H