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Snap ghost note more intuitively (#4189). 

git-svn-id: svn://localhost/ardour2/branches/3.0@9885 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Carl Hetherington 2011-07-16 21:53:30 +00:00
parent 0cd67582cb
commit 7b8efcc250
1 changed files with 20 additions and 4 deletions
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24
gtk2_ardour/midi_region_view.cc
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@ -3235,16 +3235,32 @@ MidiRegionView::update_ghost_note (double x, double y)
_last_ghost_y = y;
_note_group->w2i (x, y);
framepos_t const f = snap_pixel_to_frame (x);
PublicEditor& editor = trackview.editor ();
framepos_t const unsnapped_frame = editor.pixel_to_frame (x);
bool success;
Evoral::MusicalTime beats = trackview.editor().get_grid_type_as_beats (success, f);
Evoral::MusicalTime grid_beats = editor.get_grid_type_as_beats (success, unsnapped_frame);
if (!success) {
beats = 1;
grid_beats = 1;
}
double length = frames_to_beats (snap_frame_to_frame (f + beats_to_frames (beats)) - f);
framecnt_t const grid_frames = beats_to_frames (grid_beats);
framepos_t f;
if (unsnapped_frame < grid_frames / 2) {
f = snap_frame_to_frame (unsnapped_frame);
} else {
/* snap to half the grid spacing behind the mouse pointer;
this makes the snapped note time more intuitive
*/
f = snap_frame_to_frame (unsnapped_frame - grid_frames / 2);
}
double length = frames_to_beats (snap_frame_to_frame (f + grid_frames) - f);
_ghost_note->note()->set_time (frames_to_beats (f + _region->start()));
_ghost_note->note()->set_length (length);