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jot down some thoughts about drop-zone dragging.

This commit is contained in:
Robin Gareus 2015-03-25 15:56:51 +01:00
parent b90c38639a
commit a9b2f97395
1 changed files with 10 additions and 0 deletions
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10
gtk2_ardour/editor_drag.cc
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@ -835,6 +835,16 @@ RegionMotionDrag::motion (GdkEvent* event, bool first_move)
*
* B) grab the lower, drag 1 down, region (and mouse) are in dropzone, The End.
* upper region is only down one track and cannot be moved into the zone.
*
* Proposed solution:
* keep track of how many regions are in the DZ (private var),
* also count from how many tracks the dragged-regions come from (first move)
*
* if not all regions are in the DZ, keep going.
*
* Using 'default height' H for all dropzone regions will make things
* a lot simpler: (number_of_DZ_entries * H + Pointer_YPOS - DZ_YPOS) / H.
* (because at this point in time PlaylistDropzoneMap is not yet populated)
*/
delta_time_axis_view = _time_axis_views.size () - _last_pointer_time_axis_view;
#ifdef DEBUG_DROPZONEDRAG