comparison layer/WaveformLayer.cpp @ 267:4ed1446ad604

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

 
     return text;
 }
 
 int
-WaveformLayer::getYForValue(View *v, Scale scale, float value, size_t channel,
+WaveformLayer::getYForValue(const View *v, Scale scale, float value, size_t channel,
                             size_t minChannel, size_t maxChannel) const
 {
     if (maxChannel < minChannel || channel < minChannel) return 0;
 
     int h = v->height();

 
     return my - vy;
 }
 
 float
-WaveformLayer::getValueForY(View *v, Scale scale, int y,
+WaveformLayer::getValueForY(const View *v, Scale scale, int y,
                             size_t minChannel, size_t maxChannel) const
 {
     if (maxChannel < minChannel) return 0;
 
     int h = v->height();

 
     return value;
 }
 
 bool
-WaveformLayer::getYScaleValue(View *v, int y,
+WaveformLayer::getYScaleValue(const View *v, int y,
                               float &value, QString &unit) const
 {
     size_t channels = 0, minChannel = 0, maxChannel = 0;
     bool mergingChannels = false, mixingChannels = false;