changeset 60:06b3c3f437e6

* Make audio dial remember its more accurate mapped value as well as its
  display position
* Add tool tip support to audio dial to show values

--- a/audioio/PlaySpeedRangeMapper.cpp	Tue Oct 17 11:42:14 2006 +0000
+++ b/audioio/PlaySpeedRangeMapper.cpp	Tue Oct 17 13:04:49 2006 +0000
@@ -28,9 +28,14 @@
 PlaySpeedRangeMapper::getPositionForValue(float value) const
 {
     // value is percent
+    float factor = getFactorForValue(value);
+    int position = getPositionForFactor(factor);
+    return position;
+}
 
-    float factor = getFactorForValue(value);
-
+int
+PlaySpeedRangeMapper::getPositionForFactor(float factor) const
+{
     bool slow = (factor > 1.0);
 
     if (!slow) factor = 1.0 / factor;
@@ -55,6 +60,13 @@
 PlaySpeedRangeMapper::getValueForPosition(int position) const
 {
     float factor = getFactorForPosition(position);
+    float pc = getValueForFactor(factor);
+    return pc;
+}
+
+float
+PlaySpeedRangeMapper::getValueForFactor(float factor) const
+{
     float pc;
     if (factor < 1.0) pc = ((1.0 / factor) - 1.0) * 100.0;
     else pc = (1.0 - factor) * 100.0;

--- a/audioio/PlaySpeedRangeMapper.h	Tue Oct 17 11:42:14 2006 +0000
+++ b/audioio/PlaySpeedRangeMapper.h	Tue Oct 17 13:04:49 2006 +0000
@@ -26,6 +26,9 @@
     virtual int getPositionForValue(float value) const;
     virtual float getValueForPosition(int position) const;
 
+    int getPositionForFactor(float factor) const;
+    float getValueForFactor(float factor) const;
+
     float getFactorForPosition(int position) const;
     float getFactorForValue(float value) const;
 

--- a/main/MainWindow.cpp	Tue Oct 17 11:42:14 2006 +0000
+++ b/main/MainWindow.cpp	Tue Oct 17 13:04:49 2006 +0000
@@ -177,10 +177,11 @@
     m_playSpeed->setFixedHeight(24);
     m_playSpeed->setNotchesVisible(true);
     m_playSpeed->setPageStep(10);
-    m_playSpeed->setToolTip(tr("Playback speed: +0%"));
-    m_playSpeed->setObjectName(tr("Playback Speed"));
+//!!!    m_playSpeed->setToolTip(tr("Playback speed: +0%"));
+    m_playSpeed->setObjectName(tr("Playback Speedup"));
     m_playSpeed->setDefaultValue(100);
     m_playSpeed->setRangeMapper(new PlaySpeedRangeMapper(0, 200));
+    m_playSpeed->setShowToolTip(true);
     connect(m_playSpeed, SIGNAL(valueChanged(int)),
 	    this, SLOT(playSpeedChanged(int)));
 
@@ -3085,20 +3086,25 @@
 MainWindow::playSpeedChanged(int position)
 {
     PlaySpeedRangeMapper mapper(0, 200);
-    float factor = mapper.getFactorForPosition(position);
-    float percent = mapper.getValueForPosition(position);
-
-//    std::cerr << "speed = " << position << " factor = " << factor << std::endl;
-
-    bool slow = (position < 100);
+
+    float percent = m_playSpeed->mappedValue();
+
+    float factor = mapper.getFactorForValue(percent);
+
+//    float factor = mapper.getFactorForPosition(position);
+//    float percent = mapper.getValueForPosition(position);
+
+    std::cerr << "speed = " << position << " percent = " << percent << " factor = " << factor << std::endl;
+
+//!!!    bool slow = (position < 100);
     bool something = (position != 100);
-
+/*!!!
     int pc = lrintf(percent);
 
     m_playSpeed->setToolTip(tr("Playback speed: %1%2%")
-                            .arg(!slow ? "+" : "-")
+                            .arg(!slow ? "+" : "")
 			    .arg(pc));
-
+*/
     m_playSharpen->setEnabled(something);
     m_playMono->setEnabled(something);
     bool sharpen = (something && m_playSharpen->isChecked());