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Code Pull Requests Releases Activity

Tie note y to mouse pointer position when dragging MIDI 

notes (#4051).


git-svn-id: svn://localhost/ardour2/branches/3.0@9886 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Carl Hetherington 2011-07-17 16:02:26 +00:00
parent 7b8efcc250
commit 7e8e8b4e72
1 changed files with 4 additions and 22 deletions
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26
gtk2_ardour/editor_drag.cc
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@ -3890,29 +3890,11 @@ NoteDrag::total_dx () const
return _region->snap_frame_to_frame (st) - n;
}
/** @return Current total drag y change in notes */
/** @return Current total drag y change in note number */
int8_t
NoteDrag::total_dy () const
{
/* this is `backwards' to make increasing note number go in the right direction */
double const dy = _drags->current_pointer_y() - grab_y();
/* dy in notes */
int8_t ndy = 0;
if (abs (dy) >= _note_height) {
if (dy > 0) {
ndy = (int8_t) ceil (dy / _note_height / 2.0);
} else {
ndy = (int8_t) floor (dy / _note_height / 2.0);
}
}
/* more positive value = higher pitch and higher y-axis position on track,
which is the inverse of the X-centric geometric universe
*/
return -ndy;
return ((int8_t) (grab_y() / _note_height)) - ((int8_t) (_drags->current_pointer_y() / _note_height));
}
void
@ -3920,11 +3902,11 @@ NoteDrag::motion (GdkEvent *, bool)
{
/* Total change in x and y since the start of the drag */
frameoffset_t const dx = total_dx ();
int8_t const dy = -total_dy ();
int8_t const dy = total_dy ();
/* Now work out what we have to do to the note canvas items to set this new drag delta */
double const tdx = _editor->frame_to_unit (dx) - _cumulative_dx;
double const tdy = dy * _note_height - _cumulative_dy;
double const tdy = -dy * _note_height - _cumulative_dy;
if (tdx || tdy) {
_cumulative_dx += tdx;