comparison layer/SpectrogramLayer.cpp @ 1547:e6362cf5ff1d

Pass a y-coord, optionally, to Layer::snapToFeatureFrame. This is necessary for BoxLayer which needs to coordinate its snaps with the box it is highlighting for editing. Then in BoxLayer, merge getPointToDrag and getLocalPoints into a single getLocalPoint and use this throughout.

 
 bool
 SpectrogramLayer::snapToFeatureFrame(LayerGeometryProvider *,
                                      sv_frame_t &frame,
                                      int &resolution,
-                                     SnapType snap) const
+                                     SnapType snap, int) const
 {
     resolution = getWindowIncrement();
     sv_frame_t left = (frame / resolution) * resolution;
     sv_frame_t right = left + resolution;