initial import

1 files changed, 139 insertions, 0 deletions

diff --git a/muse/awl/midimeter.cpp b/muse/awl/midimeter.cpp
new file mode 100644
index 00000000..aa6e528b
--- /dev/null
+++ b/muse/awl/midimeter.cpp
@@ -0,0 +1,139 @@
+//=============================================================================
+//  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 "midimeter.h"
+
+namespace Awl {
+
+//---------------------------------------------------------
+//   MidiMeter
+//---------------------------------------------------------
+
+MidiMeter::MidiMeter(QWidget* parent)
+   : Slider(parent)
+      {
+      setRange(0.0f, 127.0f);
+      setLineStep(2);
+      setPageStep(4);
+
+      setScaleWidth(7);
+      _meterWidth = _scaleWidth * 3;
+      meterval = 0.0f;
+      }
+
+//---------------------------------------------------------
+//   setMeterVal
+//    v -  0.0 < 1.0
+//---------------------------------------------------------
+
+void MidiMeter::setMeterVal(float v)
+      {
+      if (v < 0.001)
+            v = .0f;
+      if (meterval != v) {
+            meterval = v;
+            update();
+            }
+      }
+
+//---------------------------------------------------------
+//   mouseDoubleClickEvent
+//---------------------------------------------------------
+
+void MidiMeter::mouseDoubleClickEvent(QMouseEvent*)
+      {
+      _value = _minValue;
+      valueChange();
+      update();
+      }
+
+//---------------------------------------------------------
+//   drawScale
+//---------------------------------------------------------
+
+void MidiMeter::paint(const QRect& r)
+      {
+      int pixel = height() - sliderSize().height();
+      float range = maxValue() - minValue();
+      int ppos = int(pixel * (_value - minValue()) / range);
+      if (_invert)
+            ppos = pixel - ppos;
+
+      QRect rr(r);
+      QPainter p(this);
+
+      QColor sc(isEnabled() ? _scaleColor : Qt::gray);
+      QColor svc(isEnabled() ? _scaleValueColor : Qt::gray);
+      p.setBrush(svc);
+
+      int h  = height();
+//      int kw = sliderSize().width();
+      int kh = sliderSize().height();
+
+      //---------------------------------------------------
+      //    draw meter
+      //---------------------------------------------------
+
+      int mw = _meterWidth;
+      int x  = 0;
+
+      int y1 = kh / 2;
+//      int y2 = h - (ppos + y1);
+      int y3 = h - y1;
+
+      int mh  = h - kh;
+
+      p.setPen(Qt::white);
+      h = lrint(meterval * mh);
+      if (h < 0)
+            h = 0;
+      else if (h > mh)
+            h = mh;
+      p.fillRect(x, y3-h, mw, h,    QBrush(0x00ff00)); // green
+      p.fillRect(x, y1,   mw, mh-h, QBrush(0x007000)); // dark green
+      x += mw;
+
+#if 0
+      //---------------------------------------------------
+      //    draw scale
+      //---------------------------------------------------
+
+      x  += _scaleWidth/2;
+
+      p.setPen(QPen(sc, _scaleWidth));
+      p.drawLine(x, y1, x, y2);
+      p.setPen(QPen(svc, _scaleWidth));
+      p.drawLine(x, y2, x, y3);
+
+      //---------------------------------------------------
+      //    draw slider
+      //---------------------------------------------------
+
+      x  += _scaleWidth/2;
+      p.setPen(QPen(svc, 0));
+      points.setPoint(0, x,      y2);
+      points.setPoint(1, x + kw, y2 - kh/2);
+      points.setPoint(2, x + kw, y2 + kh/2);
+      p.drawConvexPolygon(points);
+#endif
+      }
+}
+