speeded up structural operations

fixed several heavy bugs in structural operations:
 - global insert freezed muse
 - global cut and global insert behaved wrong on parts not
   starting at the zeroth tick
 - fixed upper_bound vs. lower_bound issues
clicking below the track list now deselects all tracks
moved checkRegionNotNull() where it belongs

1 files changed, 21 insertions, 0 deletions

diff --git a/muse2/muse/app.cpp b/muse2/muse/app.cpp
index fb07955f..3abb116f 100644
--- a/muse2/muse/app.cpp
+++ b/muse2/muse/app.cpp
@@ -3114,6 +3114,27 @@ void MusE::bounceToFile(AudioOutput* ao)
       song->setPlay(true);
       }
 
+
+//---------------------------------------------------------
+//   checkRegionNotNull
+//    return true if (rPos - lPos) <= 0
+//---------------------------------------------------------
+
+bool MusE::checkRegionNotNull()
+      {
+      int start = song->lPos().frame();
+      int end   = song->rPos().frame();
+      if (end - start <= 0) {
+            QMessageBox::critical(this,
+               tr("MusE: Bounce"),
+               tr("set left/right marker for bounce range")
+               );
+            return true;
+            }
+      return false;
+      }
+
+
 #ifdef HAVE_LASH
 //---------------------------------------------------------
 //   lash_idle_cb