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Disable scrollwheel when there are no tracks. (Used to change the time ruler.)

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This commit is contained in:
Paul Licameli 2015-05-26 11:28:35 -04:00
parent 2c7c0eb0b6
commit e9830e727b
1 changed files with 6 additions and 0 deletions
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6
src/TrackPanel.cpp
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@ -6196,6 +6196,12 @@ void TrackPanel::HandleResize(wxMouseEvent & event)
/// Handle mouse wheel rotation (for zoom in/out, vertical and horizontal scrolling)
void TrackPanel::HandleWheelRotation(wxMouseEvent & event)
{
if (GetTracks()->IsEmpty())
// Scrolling and Zoom in and out commands are disabled when there are no tracks.
// This should be disabled too for consistency. Otherwise
// you do see changes in the time ruler.
return;
double steps = event.m_wheelRotation /
(event.m_wheelDelta > 0 ? (double)event.m_wheelDelta : 120.0);