Remove custom mouse press event code from opacity slider (#19243) (#1…

…9246)

src/gui/QvisOpacitySlider.C

@@ -907,6 +907,7 @@ QvisOpacitySlider::paintEvent(QPaintEvent *)
 // Modifications:
 //   Brad Whitlock, Thu Jun  5 14:21:18 PDT 2008
 //   Qt 4.
+// 
 //
 // ****************************************************************************
 
@@ -969,6 +970,9 @@ QvisOpacitySlider::mousePressEvent(QMouseEvent *e)
 // Creation:   Thu Dec 7 12:46:37 PDT 2000
 //
 // Modifications:
+//   Justin Privitera, Tue Jan 16 15:32:16 PST 2024
+//   Remove custom code snapping the slider value to zero when dragging it 
+//   outside the window.
 //
 // ****************************************************************************
 
@@ -978,19 +982,6 @@ QvisOpacitySlider::mouseMoveEvent(QMouseEvent *e)
     if(state != Dragging)
         return;
 
-    QRect r = rect();
-    int m = maximumSliderDragDistance();
-    if(m >= 0)
-    {
-        r.setRect(r.x() - m, r.y() - 2*m/3,
-                  r.width() + 2*m, r.height() + 3*m);
-        if(!r.contains(e->pos()))
-        {
-            moveSlider( positionFromValue( sliderStartVal) );
-            return;
-        }
-    }
-
     moveSlider(e->pos().x() - clickOffset );
 }
 

src/resources/help/en_US/relnotes3.4.1.html

@@ -32,6 +32,7 @@
   <li>Fixed a Cube reader bug that didn't read in multiple orbital data files correctly.</li>
   <li>Fixed a bug with the Expression window that caused the 'Python' editor to be the default tab when the window was first opened.</li>
   <li>Fixed a bug with the Cartographic Projection operator where the projections were a no-op.</li>
+  <li>Removed custom logic forcing the opacity slider to snap to zero if the mouse dragged the slider outside the widget it belongs to.</li>
 </ul>
 
 <a name="Enhancements"></a>