comparison layer/Colour3DPlotLayer.h @ 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.

     QString getFeatureDescription(LayerGeometryProvider *v,
                                   QPoint &) const override;
 
     bool snapToFeatureFrame(LayerGeometryProvider *v, sv_frame_t &frame, 
                             int &resolution,
-                            SnapType snap) const override;
+                            SnapType snap, int ycoord) const override;
 
     void setLayerDormant(const LayerGeometryProvider *v,
                          bool dormant) override;
 
     bool isLayerScrollable(const LayerGeometryProvider *v) const override;