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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * knob.h
+ *
+ * Thu Feb 28 07:37:27 CET 2013
+ * Copyright 2013 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo 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.
+ *
+ * DrumGizmo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#ifndef __DRUMGIZMO_KNOB_H__
+#define __DRUMGIZMO_KNOB_H__
+
+#include "widget.h"
+
+namespace GUI {
+
+class Knob : public Widget {
+public:
+ Knob(Widget *parent);
+
+ bool catchMouse() { return true; }
+
+ void setValue(float value);
+ float value();
+
+ void registerClickHandler(void (*handler)(void *), void *ptr);
+
+ //protected:
+ virtual void clicked() {}
+
+ virtual void repaintEvent(RepaintEvent *e);
+ virtual void buttonEvent(ButtonEvent *e);
+ virtual void mouseMoveEvent(MouseMoveEvent *e);
+
+private:
+ typedef enum {
+ up,
+ down
+ } state_t;
+
+ float val;
+ float maximum;
+ float minimum;
+
+ state_t state;
+
+ void (*handler)(void *);
+ void *ptr;
+
+ int mouse_offset_x;
+
+};
+
+};
+
+#endif/*__DRUMGIZMO_KNOB_H__*/