From c0d15db47c4192f2901adf8d34a4c898c383896a Mon Sep 17 00:00:00 2001
From: DeepSOIC <vv.titov@gmail.com>
Date: Sat, 28 Mar 2015 00:39:04 +0300
Subject: [PATCH] Gestures: subscribe 3d view to recieve gestures

---
 src/Gui/View3DInventorViewer.cpp | 14 ++++++++++++++
 src/Gui/View3DInventorViewer.h   |  1 +
 2 files changed, 15 insertions(+)

diff --git a/src/Gui/View3DInventorViewer.cpp b/src/Gui/View3DInventorViewer.cpp
index 2d6d532f1..1a50745bd 100644
--- a/src/Gui/View3DInventorViewer.cpp
+++ b/src/Gui/View3DInventorViewer.cpp
@@ -123,7 +123,9 @@
 
 #include <Inventor/draggers/SoCenterballDragger.h>
 #include <Inventor/annex/Profiler/SoProfiler.h>
+#include <qgesture.h>
 
+#include <WinNativeGestureRecognizers.h>
 
 //#define FC_LOGGING_CB
 
@@ -458,6 +460,18 @@ void View3DInventorViewer::init()
     viewerEventFilter = new ViewerEventFilter;
     installEventFilter(viewerEventFilter);
     getEventFilter()->registerInputDevice(new SpaceNavigatorDevice);
+
+    this->grabGesture(Qt::PanGesture);
+    this->grabGesture(Qt::PinchGesture);
+#ifdef GESTURE_MESS
+    {
+        static WinNativeGestureRecognizerPinch* recognizer;//static to avoid creating more than one recognizer, thus causing memory leak and gradual slowdown
+        if(recognizer == 0){
+            recognizer = new WinNativeGestureRecognizerPinch;
+            recognizer->registerRecognizer(recognizer); //From now on, Qt owns the pointer.
+        }
+    }
+#endif
     
     //create the cursors
     QBitmap cursor = QBitmap::fromData(QSize(ROTATE_WIDTH, ROTATE_HEIGHT), rotate_bitmap);
diff --git a/src/Gui/View3DInventorViewer.h b/src/Gui/View3DInventorViewer.h
index e844ed4e6..32037260b 100644
--- a/src/Gui/View3DInventorViewer.h
+++ b/src/Gui/View3DInventorViewer.h
@@ -357,6 +357,7 @@ protected:
     SbBool processSoEventBase(const SoEvent * const ev);
     void printDimension();
     void selectAll();
+    bool isWinGesturesTuned;//a flag. If false, gestures on windows will get tuned(or re-tuned) upon the first event that arrives to eventFilter. This is needed to tune windows gestures after Qt does it internally, since its settings are not all right for us.
 
 private:
     static void setViewportCB(void * userdata, SoAction * action);