summaryrefslogtreecommitdiff
path: root/attic/muse2-oom/muse2/awl/aslider.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'attic/muse2-oom/muse2/awl/aslider.cpp')
-rw-r--r--attic/muse2-oom/muse2/awl/aslider.cpp244
1 files changed, 244 insertions, 0 deletions
diff --git a/attic/muse2-oom/muse2/awl/aslider.cpp b/attic/muse2-oom/muse2/awl/aslider.cpp
new file mode 100644
index 00000000..b48ccbe0
--- /dev/null
+++ b/attic/muse2-oom/muse2/awl/aslider.cpp
@@ -0,0 +1,244 @@
+//=============================================================================
+// 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"
+
+#include <QKeyEvent>
+#include <QWheelEvent>
+
+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;
+}
+
+}