fixed ctrl+mousewheel zooming in on piano roll

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1922 0778d3d1-df1d-0410-868b-ea421aaaa00d

ChangeLog

@@ -10,6 +10,7 @@
 	- note volume bars are painted blue if selected
 	- dragging around a note in the piano roll makes the correct volume
 	  and panning noises
+	- fixed Ctrl+Scroll to zoom in
 	
 	* include/panning.h:
 	added panningToMidi function to easily convert panning to a midi value

TODO

@@ -52,7 +52,6 @@
 - add FLAC as export-format?
 
 Andrew Kelley's todo:
-- fix ctrl+mousewheel zooming in
 - if you press both controls at the same time, the piano roll gets stuck in selection mode
 - change my modifier code to use mainwindows modifier info
 - multiview button - show notes from every instrument in the current beat+bassline with different colors

src/gui/piano_roll.cpp

@@ -2761,7 +2761,7 @@ void pianoRoll::resizeEvent( QResizeEvent * )
 void pianoRoll::wheelEvent( QWheelEvent * _we )
 {
 	_we->accept();
-	if( engine::getMainWindow()->isCtrlPressed() == true )
+	if( _we->modifiers() & Qt::ControlModifier )
 	{
 		if( _we->delta() > 0 )
 		{