Added AWL files

1 files changed, 85 insertions, 0 deletions

diff --git a/muse2/awl/volslider.cpp b/muse2/awl/volslider.cpp
new file mode 100644
index 00000000..59f1b8cf
--- /dev/null
+++ b/muse2/awl/volslider.cpp
@@ -0,0 +1,85 @@
+//=============================================================================
+//  Awl
+//  Audio Widget Library
+//  $Id:$
+//
+//  Copyright (C) 2002-2006 by Werner Schweer and others
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License version 2.
+//
+//  This program 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 this program; if not, write to the Free Software
+//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//=============================================================================
+
+#include "fastlog.h"
+#include "volslider.h"
+
+namespace Awl {
+
+//---------------------------------------------------------
+//   VolSlider
+//---------------------------------------------------------
+
+VolSlider::VolSlider(QWidget* parent)
+   : Slider(parent)
+      {
+      setLog(true);
+      setRange(-60.0f, 10.0f);
+      setScaleWidth(7);
+      setLineStep(.8f);
+      setPageStep(3.0f);
+      }
+
+//---------------------------------------------------------
+//   mouseDoubleClickEvent
+//---------------------------------------------------------
+
+void VolSlider::mouseDoubleClickEvent(QMouseEvent* ev)
+      {
+      if (ev->button() == Qt::RightButton)
+      	_value = 0.0;
+      else
+      	_value = _minValue;
+      valueChange();
+      update();
+      }
+
+
+//---------------------------------------------------------
+//   setValue
+//---------------------------------------------------------
+
+void VolSlider::setValue(double val)
+      {
+      if (_log) {
+            if (val == 0.0f)
+                  _value = _minValue;
+            else {
+                  _value = fast_log10(val) * 20.0f;
+       		if (_value < _minValue)
+            		_value = _minValue;
+                 	}
+            }
+      else
+            _value = val;
+      update();
+      }
+
+//---------------------------------------------------------
+//   value
+//---------------------------------------------------------
+
+double VolSlider::value() const
+      {
+      return _log ? (_value <= _minValue) ? 0.0f : pow(10.0, _value*0.05f)
+                  : _value;
+      }
+
+}