comparison layer/SpectrogramLayer.cpp @ 267:4ed1446ad604

* more on measurement tool -- pull out some logic from pane to layer &c
  still more to do

         paint.drawRect(x0, y1, x1 - x0 + 1, y0 - y1 + 1);
     }
 }
 
 float
-SpectrogramLayer::getYForFrequency(View *v, float frequency) const
+SpectrogramLayer::getYForFrequency(const View *v, float frequency) const
 {
     return v->getYForFrequency(frequency,
 			       getEffectiveMinFrequency(),
 			       getEffectiveMaxFrequency(),
 			       m_frequencyScale == LogFrequencyScale);
 }
 
 float
-SpectrogramLayer::getFrequencyForY(View *v, int y) const
+SpectrogramLayer::getFrequencyForY(const View *v, int y) const
 {
     return v->getFrequencyForY(y,
 			       getEffectiveMinFrequency(),
 			       getEffectiveMaxFrequency(),
 			       m_frequencyScale == LogFrequencyScale);

 
     return true;
 }
 
 bool
-SpectrogramLayer::getYScaleValue(View *v, int y,
+SpectrogramLayer::getYScaleValue(const View *v, int y,
                                  float &value, QString &unit) const
 {
     value = getFrequencyForY(v, y);
     unit = "Hz";
     return true;