Added AWL files

1 files changed, 241 insertions, 0 deletions

diff --git a/muse2/awl/aslider.cpp b/muse2/awl/aslider.cpp
new file mode 100644
index 00000000..79a36b88
--- /dev/null
+++ b/muse2/awl/aslider.cpp
@@ -0,0 +1,241 @@
+//=============================================================================
+//  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 "aslider.h"
+
+namespace Awl {
+
+//---------------------------------------------------------
+//   AbstractSlider
+//---------------------------------------------------------
+
+AbstractSlider::AbstractSlider(QWidget* parent)
+   : QWidget(parent), _scaleColor(Qt::black), _scaleValueColor(Qt::blue)
+      {
+      _id         = 0;
+      _value      = 0.5;
+      _minValue   = 0.0;
+      _maxValue   = 1.0;
+      _lineStep   = 0.1;
+      _pageStep   = 0.2;
+      _center     = false;
+      _invert     = false;
+      _scaleWidth = 4;
+      _log        = false;
+      _integer    = false;
+      }
+
+//---------------------------------------------------------
+//   setEnabled
+//---------------------------------------------------------
+
+void AbstractSlider::setEnabled(bool val)
+      {
+      QWidget::setEnabled(val);
+      update();
+      }
+
+//---------------------------------------------------------
+//   setCenter
+//!   If the center flag is set, a notch is drawn to
+//!   show the center position.
+//---------------------------------------------------------
+
+void AbstractSlider::setCenter(bool val)
+      {
+      if (val != _center) {
+            _center = val;
+            update();
+            }
+      }
+
+//!--------------------------------------------------------
+//   setScaleWidth
+//---------------------------------------------------------
+
+void AbstractSlider::setScaleWidth(int val)
+      {
+      if (val != _scaleWidth) {
+            _scaleWidth = val;
+            update();
+            }
+      }
+
+//---------------------------------------------------------
+//   setScaleColor
+//---------------------------------------------------------
+
+void AbstractSlider::setScaleColor(const QColor& c)
+      {
+      if (c != _scaleColor) {
+            _scaleColor = c;
+            update();
+            }
+      }
+
+//---------------------------------------------------------
+//   setScaleValueColor
+//---------------------------------------------------------
+
+void AbstractSlider::setScaleValueColor(const QColor& c)
+      {
+      if (c != _scaleValueColor) {
+            _scaleValueColor = c;
+            update();
+            }
+      }
+
+//---------------------------------------------------------
+//   wheelEvent
+//---------------------------------------------------------
+
+void AbstractSlider::wheelEvent(QWheelEvent* ev)
+      {
+      double div = 120.0;
+      if (ev->modifiers() & Qt::ShiftModifier)
+            _value += (ev->delta() * pageStep()) / div;
+      else
+            _value += (ev->delta() * lineStep()) / div;
+      if (_value < _minValue)
+            _value = _minValue;
+      else if (_value > _maxValue)
+            _value = _maxValue;
+      valueChange();
+      update();
+      }
+
+//---------------------------------------------------------
+//   keyPressEvent
+//---------------------------------------------------------
+
+void AbstractSlider::keyPressEvent(QKeyEvent* ev)
+      {
+      double oval = _value;
+
+      switch (ev->key()) {
+            case Qt::Key_Home:    _value = _minValue; break;
+            case Qt::Key_End:     _value = _maxValue; break;
+            case Qt::Key_Up:
+            case Qt::Key_Left:    _value += lineStep(); break;
+            case Qt::Key_Down:
+            case Qt::Key_Right:    _value -= lineStep(); break;
+            case Qt::Key_PageDown: _value -= pageStep(); break;
+            case Qt::Key_PageUp:   _value += pageStep(); break;
+            default:
+                  break;
+            }
+      if (_value < _minValue)
+            _value = _minValue;
+      else if (_value > _maxValue)
+            _value = _maxValue;
+
+      if (oval != _value) {
+            if (_integer && (rint(oval) == rint(_value)))
+                  return;
+            valueChange();
+            update();
+            }
+      }
+
+//---------------------------------------------------------
+//   setValue
+//---------------------------------------------------------
+
+void AbstractSlider::setValue(double val)
+      {
+      if (_log) {
+            if (val == 0.0f)
+                  _value = _minValue;
+            else {
+                  _value = fast_log10(val) * 20.0f;
+       		if (_value < _minValue)
+            		_value = _minValue;
+                 	}
+            }
+      else if (_integer)
+            _value = rint(val);
+      else
+            _value = val;
+      update();
+      }
+
+//---------------------------------------------------------
+//   valueChange
+//---------------------------------------------------------
+
+void AbstractSlider::valueChange()
+      {
+      emit valueChanged(value(), _id);
+      }
+
+//---------------------------------------------------------
+//   value
+//---------------------------------------------------------
+
+double AbstractSlider::value() const
+      {
+      if (_log)
+            return pow(10.0, _value*0.05f);
+      if (_integer)
+            return rint(_value);
+      return _value;
+      }
+
+//---------------------------------------------------------
+//   minLogValue
+//---------------------------------------------------------
+
+//double AbstractSlider::minValue() const {
+//  return _log ? pow(10.0, _minValue*0.05f) : _minValue;
+//}
+
+//---------------------------------------------------------
+//   setMinLogValue
+//---------------------------------------------------------
+
+void AbstractSlider::setMinLogValue(double val) {
+  if (_log) {
+    if (val == 0.0f) _minValue = -100;
+    else _minValue = fast_log10(val) * 20.0f;
+  }
+  else _minValue = val;
+}
+
+//---------------------------------------------------------
+//   maxLogValue
+//---------------------------------------------------------
+
+//double AbstractSlider::maxValue() const {
+//  return _log ? pow(10.0, _maxValue*0.05f) : _maxValue;
+//}
+
+//---------------------------------------------------------
+//   setMaxLogValue
+//---------------------------------------------------------
+
+void AbstractSlider::setMaxLogValue(double val) {
+  if (_log) {
+    _maxValue = fast_log10(val) * 20.0f;
+  }
+  else _maxValue = val;
+}
+
+}