Better way to time resize slot

Author: dcwhite

src/Interface/Modules/Render/ViewScene.cc

@@ -145,6 +145,9 @@ ViewSceneDialog::ViewSceneDialog(const std::string& name, ModuleStateHandle stat
   std::string sep;
   sep += boost::filesystem::path::preferred_separator;
   Modules::Visualization::TextBuilder::setFSStrings(filesystemRoot, sep);
+
+  resizeTimer_.setSingleShot(true);
+  connect(&resizeTimer_, SIGNAL(timeout()), this, SLOT(resizingDone()));
 }
 
 void ViewSceneDialog::pullSpecial()
@@ -214,23 +217,17 @@ void ViewSceneDialog::mousePressEvent(QMouseEvent* event)
 
 void ViewSceneDialog::resizeEvent(QResizeEvent *event)
 {
-  static boost::timer timer;
-  static Mutex lock("VS::resize");
-  
-  {
-    Guard g(lock.get());
-    if (timer.elapsed() > 1)
-    {
-      timer.restart();
-      ViewSceneFeedback vsf;
-      vsf.windowSize = std::make_tuple(event->size().width(), event->size().height());
-      state_->setTransientValue(Parameters::GeometryFeedbackInfo, vsf);
-    }
-  }
-
+  resizeTimer_.start(500);
   ModuleDialogGeneric::resizeEvent(event);
 }
 
+void ViewSceneDialog::resizingDone()
+{
+  ViewSceneFeedback vsf;
+  vsf.windowSize = std::make_tuple(size().width(), size().height());
+  state_->setTransientValue(Parameters::GeometryFeedbackInfo, vsf);
+}
+
 std::string ViewSceneDialog::restoreObjColor()
 {
   LOG_DEBUG("ViewSceneDialog::asyncExecute before locking");

src/Interface/Modules/Render/ViewScene.h

@@ -70,7 +70,7 @@ namespace SCIRun {
       void newGeometryValueForwarder();
       void mousePressSignalForTestingGeometryObjectFeedback(int x, int y, const std::string& selName);
 
-      protected Q_SLOTS:
+    protected Q_SLOTS:
       void menuMouseControlChanged(int index);
       void autoViewClicked();
       void newGeometryValue();
@@ -139,6 +139,7 @@ namespace SCIRun {
       void toggleLight1(bool value);
       void toggleLight2(bool value);
       void toggleLight3(bool value);
+      void resizingDone();
 
     protected:
       void mousePressEvent(QMouseEvent* event) override;
@@ -232,6 +233,7 @@ namespace SCIRun {
       class Screenshot* screenshotTaker_;
       bool saveScreenshotOnNewGeometry_;
       bool pulledSavedVisibility_ {false};
+      QTimer resizeTimer_;
 
       //geometries
       Modules::Visualization::TextBuilder textBuilder_;