Added AWL files

1 files changed, 251 insertions, 0 deletions

diff --git a/muse2/awl/slider.cpp b/muse2/awl/slider.cpp
new file mode 100644
index 00000000..7686e850
--- /dev/null
+++ b/muse2/awl/slider.cpp
@@ -0,0 +1,251 @@
+//=============================================================================
+//  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 "slider.h"
+
+namespace Awl {
+
+//---------------------------------------------------------
+//   Slider
+//---------------------------------------------------------
+
+Slider::Slider(QWidget* parent)
+   : AbstractSlider(parent), orient(Qt::Vertical), _sliderSize(14,14)
+      {
+      init();
+      }
+
+//---------------------------------------------------------
+//   Slider
+//---------------------------------------------------------
+
+Slider::Slider(Qt::Orientation orientation, QWidget* parent)
+   : AbstractSlider(parent), orient(orientation), _sliderSize(14,14)
+      {
+      init();
+      }
+
+//---------------------------------------------------------
+//   Slider
+//---------------------------------------------------------
+
+void Slider::init()
+      {
+      if (orient == Qt::Vertical)
+      	setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Expanding);
+      else
+      	setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+      dragMode = false;
+      points  = 0;
+      updateKnob();
+      }
+
+//---------------------------------------------------------
+//   sizeHint
+//---------------------------------------------------------
+
+QSize Slider::sizeHint() const
+  	{
+      int w = _sliderSize.width() + scaleWidth();
+ 	return orient == Qt::Vertical ? QSize(w, 200) : QSize(200, w);
+      }
+
+//---------------------------------------------------------
+//   Slider
+//---------------------------------------------------------
+
+Slider::~Slider()
+      {
+      if (points)
+      	delete points;
+      }
+
+//---------------------------------------------------------
+//   setOrientation
+//---------------------------------------------------------
+
+void Slider::setOrientation(Qt::Orientation o)
+      {
+      orient = o;
+      updateKnob();
+      update();
+      }
+
+//---------------------------------------------------------
+//   updateKnob
+//---------------------------------------------------------
+
+void Slider::updateKnob()
+      {
+	if (points)
+      	delete points;
+	points = new QPainterPath;
+      int kh  = _sliderSize.height();
+    	int kw  = _sliderSize.width();
+      points->moveTo(0.0, 0.0);
+      if (orient == Qt::Vertical) {
+      	int kh  = _sliderSize.height();
+            int kh2  = kh / 2;
+            points->lineTo(kw, -kh2);
+            points->lineTo(kw, kh2);
+            }
+      else {
+            int kw2 = kw/2;
+            points->lineTo(-kw2, kh);
+            points->lineTo(kw2, kh);
+            }
+      points->lineTo(0.0, 0.0);
+      }
+
+//---------------------------------------------------------
+//   setInvertedAppearance
+//---------------------------------------------------------
+
+void Slider::setInvertedAppearance(bool val)
+      {
+      AbstractSlider::setInvertedAppearance(val);
+      update();
+      }
+
+//---------------------------------------------------------
+//   setSliderSize
+//---------------------------------------------------------
+
+void Slider::setSliderSize(const QSize& s)
+      {
+      _sliderSize = s;
+      update();
+      }
+
+//---------------------------------------------------------
+//   mousePressEvent
+//---------------------------------------------------------
+
+void Slider::mousePressEvent(QMouseEvent* ev)
+      {
+      startDrag = ev->pos();
+//      if (points->boundingRect().toRect().contains(startDrag)) {
+            emit sliderPressed(_id);
+            dragMode = true;
+            int pixel = (orient == Qt::Vertical) ? height() - _sliderSize.height() : width() - _sliderSize.width();
+            dragppos = int(pixel * (_value - minValue()) / (maxValue() - minValue()));
+            if (_invert)
+                  dragppos = pixel - dragppos;
+//            }
+      }
+
+//---------------------------------------------------------
+//   mouseReleaseEvent
+//---------------------------------------------------------
+
+void Slider::mouseReleaseEvent(QMouseEvent*)
+      {
+      if (dragMode) {
+            emit sliderReleased(_id);
+            dragMode = false;
+            }
+      }
+
+//---------------------------------------------------------
+//   mouseMoveEvent
+//---------------------------------------------------------
+
+void Slider::mouseMoveEvent(QMouseEvent* ev)
+      {
+      if (!dragMode)
+            return;
+      int delta = startDrag.y() - ev->y();
+
+//      if (_invert)
+//            delta = -delta;
+      if (orient == Qt::Horizontal)
+            delta = -delta;
+      int ppos = dragppos + delta;
+      if (ppos < 0)
+            ppos = 0;
+
+      int pixel = (orient == Qt::Vertical) ? height() - _sliderSize.height() : width() - _sliderSize.width();
+      if (ppos > pixel)
+            ppos = pixel;
+      int pos = _invert ? (pixel - ppos) : ppos;
+      _value  = (pos * (maxValue() - minValue()) / pixel) + minValue() - 0.000001;
+      update();
+      valueChange();
+      }
+
+//---------------------------------------------------------
+//   paint
+//    r - phys coord system
+//---------------------------------------------------------
+
+void Slider::paintEvent(QPaintEvent* ev)
+      {
+      int h   = height();
+      int w   = width();
+      int kw  = _sliderSize.width();
+      int kh  = _sliderSize.height();
+      int pixel = (orient == Qt::Vertical) ? h - kh : w - kw;
+      double range = maxValue() - minValue();
+      int ppos = int(pixel * (_value - minValue()) / range);
+      if ((orient == Qt::Vertical && _invert) || (orient == Qt::Horizontal && !_invert))
+            ppos = pixel - ppos;
+
+      QRect rr(ev->rect());
+      QPainter p(this);
+
+      QColor sc(isEnabled() ? _scaleColor : Qt::gray);
+      QColor svc(isEnabled() ? _scaleValueColor : Qt::gray);
+      p.setBrush(svc);
+
+      int kh2 = kh/2;
+
+      //---------------------------------------------------
+      //    draw scale
+      //---------------------------------------------------
+
+      if (orient == Qt::Vertical) {
+            int xm = (w - _scaleWidth - _sliderSize.height()) / 2;
+      	int y1 = kh2;
+      	int y2 = h - (ppos + y1);
+      	int y3 = h - y1;
+            p.fillRect(xm, y1, _scaleWidth, y2-y1, _invert ? svc : sc);
+            p.fillRect(xm, y2, _scaleWidth, y3-y2, _invert ? sc : svc);
+      	p.translate(QPointF(xm + _scaleWidth/2, y2));
+            }
+      else {
+            int ym = (h - _scaleWidth - _sliderSize.height()) / 2;
+      	int x1 = kh2;
+      	int x2 = w - (ppos + x1);
+      	int x3 = w - x1;
+            p.fillRect(x1, ym, x2-x1, _scaleWidth, _invert ? sc : svc);
+            p.fillRect(x2, ym, x3-x2, _scaleWidth, _invert ? svc : sc);
+      	p.translate(QPointF(x2, ym + _scaleWidth/2));
+            }
+
+      //---------------------------------------------------
+      //    draw slider
+      //---------------------------------------------------
+
+  	p.setRenderHint(QPainter::Antialiasing, true);
+	p.setPen(QPen(svc, 0));
+     	p.drawPath(*points);
+      }
+}
+