comparison layer/ImageLayer.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.

 //!!! too much overlap with TimeValueLayer/TimeInstantLayer/TextLayer
 
 bool
 ImageLayer::snapToFeatureFrame(LayerGeometryProvider *v, sv_frame_t &frame,
                                int &resolution,
-                               SnapType snap) const
+                               SnapType snap, int ycoord) const
 {
     auto model = ModelById::getAs<ImageModel>(m_model);
     if (!model) {
-        return Layer::snapToFeatureFrame(v, frame, resolution, snap);
+        return Layer::snapToFeatureFrame(v, frame, resolution, snap, ycoord);
     }
 
     resolution = model->getResolution();
 
     if (snap == SnapNeighbouring) {