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midi editing: scroll in a midi region with no selection will scroll the note range (#8721)

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This commit is contained in:
Paul Davis 2022-04-17 23:16:50 -06:00
parent a0d08232ad
commit b725b7ddb4
1 changed files with 20 additions and 0 deletions
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20
gtk2_ardour/midi_region_view.cc
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@ -679,7 +679,27 @@ MidiRegionView::scroll (GdkEventScroll* ev)
if (trackview.editor().drags()->active()) { if (trackview.editor().drags()->active()) {
return false; return false;
} }
if (_selection.empty()) { if (_selection.empty()) {
int step = (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier) ? 1 : 12);
switch (ev->direction) {
case GDK_SCROLL_UP:
if (midi_stream_view()->highest_note() < 127 - step) {
midi_stream_view()->apply_note_range (midi_stream_view()->lowest_note() + step, midi_stream_view()->highest_note() + step, true);
}
return true;
case GDK_SCROLL_DOWN:
if (midi_stream_view()->lowest_note() >= step) {
midi_stream_view()->apply_note_range (midi_stream_view()->lowest_note() - step, midi_stream_view()->highest_note() - step, true);
}
return true;
default:
break;
}
return false; return false;
} }