1 files changed, 184 insertions, 0 deletions
diff --git a/muse2/muse/mixer/meter.cpp b/muse2/muse/mixer/meter.cpp
new file mode 100644
index 00000000..14b20a18
--- /dev/null
+++ b/muse2/muse/mixer/meter.cpp
@@ -0,0 +1,184 @@
+//=========================================================
+//  MusE
+//  Linux Music Editor
+//  $Id: meter.cpp,v 1.4.2.2 2009/05/03 04:14:00 terminator356 Exp $
+//
+//  (C) Copyright 2000 Werner Schweer (ws@seh.de)
+//=========================================================
+
+#include <stdio.h>
+#include <cmath>
+#include <qpainter.h>
+//Added by qt3to4:
+#include <QResizeEvent>
+#include <QMouseEvent>
+#include <Q3Frame>
+
+#include "meter.h"
+#include "gconfig.h"
+#include "fastlog.h"
+
+//---------------------------------------------------------
+//   Meter
+//---------------------------------------------------------
+
+Meter::Meter(QWidget* parent, MeterType type)
+   : Q3Frame(parent, "", Qt::WNoAutoErase)
+      {
+      mtype = type;
+      overflow    = false;
+      val         = 0.0;
+      maxVal      = 0.0;
+      minScale    = mtype == DBMeter ? config.minMeter : 0.0;      // min value in dB or int
+      maxScale    = mtype == DBMeter ? 10.0 : 127.0;
+      yellowScale = -10;
+      redScale    = 0;
+      setLineWidth(0);
+      setMidLineWidth(0);
+      }
+
+//---------------------------------------------------------
+//   setVal
+//---------------------------------------------------------
+
+//void Meter::setVal(int v, int max, bool ovl)
+void Meter::setVal(double v, double max, bool ovl)
+      {
+      overflow = ovl;
+      bool ud = false;
+      
+      if(mtype == DBMeter)
+      {
+        double minScaleLin = pow(10.0, minScale/20.0);
+        if((v >= minScaleLin && val != v) || val >= minScaleLin)
+        {
+          val = v;
+          ud = true;
+        }
+      }
+      else
+      {
+        if(val != v)
+        {
+          val = v;
+          ud = true;
+        }
+      }  
+      
+      if(maxVal != max)
+      {
+        maxVal = max;
+        ud = true;
+      }
+      
+      if(ud)
+        update();
+    }
+//---------------------------------------------------------
+//   resetPeaks
+//    reset peak and overflow indicator
+//---------------------------------------------------------
+
+void Meter::resetPeaks()
+      {
+      maxVal   = val;
+      overflow = val > 0.0;
+      update();
+      }
+
+//---------------------------------------------------------
+//   setRange
+//---------------------------------------------------------
+
+void Meter::setRange(double min, double max)
+      {
+      minScale = min;
+      maxScale = max;
+      drawVU(width(), height());
+      update();
+      }
+
+//---------------------------------------------------------
+//   paintEvent
+//---------------------------------------------------------
+
+void Meter::drawContents(QPainter* p)
+      {
+      double range = maxScale - minScale;
+
+      int fw = frameWidth();
+      int h  = height() - 2* fw;
+      int yv;
+      if(mtype == DBMeter) 
+        yv = val == 0 ? h : int(((maxScale - (fast_log10(val) * 20.0)) * h)/range);
+      else
+        yv = val == 0 ? h : int(((maxScale - val) * h)/range);
+      
+      bitBlt(this, fw, fw,    &bgPm, 0, 0,  -1, yv, true); //   CopyROP, true); ddskrjo
+      bitBlt(this, fw, fw+yv, &fgPm, 0, yv, -1, h-yv, true); //CopyROP, true); ddskrjo
+
+      int ymax;
+      if(mtype == DBMeter) 
+        ymax = maxVal == 0 ? 0 : int(((maxScale - (fast_log10(maxVal) * 20.0)) * h)/range);
+      else
+        ymax = maxVal == 0 ? 0 : int(((maxScale - maxVal) * h)/range);
+      p->setPen(Qt::white);
+      p->drawLine(0, ymax, width()-2*fw, ymax);
+      }
+
+//---------------------------------------------------------
+//   drawVU
+//---------------------------------------------------------
+
+void Meter::drawVU(int w, int h)
+      {
+      double range = maxScale - minScale;
+      int fw = frameWidth();
+      w -= 2*fw;
+      h -= 2*fw;
+      bgPm.resize(w, h);
+      fgPm.resize(w, h);
+      
+      QPainter p1(&fgPm);
+      QPainter p2(&bgPm);
+      
+      if(mtype == LinMeter)
+      {
+        p1.fillRect(0, 0, w, h, QBrush(0x00ff00));  // green
+        p2.fillRect(0, 0, w, h, QBrush(0x007000));  // green
+      }  
+      else
+      {
+        int y1 = int((maxScale - redScale) * h / range);
+        int y2 = int((maxScale - yellowScale) * h / range);
+        int y3 = h;
+        p1.fillRect(0, 0,  w, y1,    QBrush(0xff0000));  // red
+        p1.fillRect(0, y1, w, y2-y1, QBrush(0xffff00));  // yellow
+        p1.fillRect(0, y2, w, y3-y2, QBrush(0x00ff00));  // green
+  
+        p2.fillRect(0, 0,  w, y1,    QBrush(0x8e0000));  // red
+        p2.fillRect(0, y1, w, y2-y1, QBrush(0x8e8e00));  // yellow
+        p2.fillRect(0, y2, w, y3-y2, QBrush(0x007000));  // green
+      }
+    }
+
+//---------------------------------------------------------
+//   resizeEvent
+//---------------------------------------------------------
+
+void Meter::resizeEvent(QResizeEvent* ev)
+      {
+      int h  = ev->size().height();
+      int w  = ev->size().width();
+      drawVU(w, h);
+    }
+
+//---------------------------------------------------------
+//   mousePressEvent
+//---------------------------------------------------------
+
+void Meter::mousePressEvent(QMouseEvent*)
+      {
+      emit mousePress();
+      }
+