Workaround for Mac Cocoa freeze when adding a stop to a gradient color ramp (call QColorDialog::getColor after QInputDialog::getInt instead of before).

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@15855 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: telwertowski

src/gui/symbology-ng/qgsvectorgradientcolorrampv2dialog.cpp

@@ -153,9 +153,13 @@ void QgsVectorGradientColorRampV2Dialog::stopDoubleClicked( QTreeWidgetItem* ite
 
 void QgsVectorGradientColorRampV2Dialog::addStop()
 {
+  // Qt 4.7 Mac Cocoa bug: calling QInputDialog::getInt after QColorDialog::getColor will freeze app
+  // workaround: call QColorDialog::getColor below instead of here
+#ifndef QT_MAC_USE_COCOA
   QColor color = QColorDialog::getColor( QColor(), this );
   if ( !color.isValid() )
     return;
+#endif
 
   bool ok;
   int val = 50;
@@ -175,6 +179,13 @@ void QgsVectorGradientColorRampV2Dialog::addStop()
   if ( !ok )
     return;
 
+  // Qt 4.7 Mac Cocoa bug workaround: call QColorDialog::getColor here instead of above
+#ifdef QT_MAC_USE_COCOA
+  QColor color = QColorDialog::getColor( QColor(), this );
+  if ( !color.isValid() )
+    return;
+#endif
+
   double key = val / 100.0;
   QStringList lst;
   lst << "." << QString::number( val, 'f', 0 );