Mercurial > hg > orthanc-stone

diff OrthancStone/Sources/Scene2DViewport/OneGesturePointerTracker.h @ 1606:874e178f34e9

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- ViewportController now has weak ptr to Viewport - Measuring tools + related commands and all trackers now store only a weak_ptr to the Viewport and lock() on demand for usage - LayerHolder and FixedPoint aligner store only a weak_ptr to the Viewport, too - Fixed float/double warning in GrayscaleWindowingSceneTracker
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 28 Oct 2020 20:14:34 +0100
parents 8563ea5d8ae4
children 9ac2a65d4172
line wrap: on
line diff
--- a/OrthancStone/Sources/Scene2DViewport/OneGesturePointerTracker.h	Wed Oct 28 20:06:55 2020 +0100
+++ b/OrthancStone/Sources/Scene2DViewport/OneGesturePointerTracker.h	Wed Oct 28 20:14:34 2020 +0100
@@ -51,10 +51,16 @@
     int   currentTouchCount_;
 
   protected:
-    boost::shared_ptr<IViewport> viewport_;
+    boost::weak_ptr<IViewport> viewport_;
+
+    /**
+    This will return a scoped lock to the viewport.
+    If the viewport does not exist anymore, then nullptr is returned.
+    */
+    IViewport::ILock* GetViewportLock();
 
   public:
-    explicit OneGesturePointerTracker(boost::shared_ptr<IViewport> viewport);
+    explicit OneGesturePointerTracker(boost::weak_ptr<IViewport> viewport);
     
     virtual void PointerUp(const PointerEvent& event) ORTHANC_OVERRIDE;