From 215dd331495712dd060376a4aee819e4193e0229 Mon Sep 17 00:00:00 2001
From: kgv <kgv@opencascade.com>
Date: Thu, 24 Oct 2019 13:44:49 +0300
Subject: [PATCH] 0031102: Visualization, AIS_ViewController -
 AIS_DragAction_Stop is never emitted on mouse unclick

AIS_ViewController::UpdateMousePosition() now sets myMouseStopDragOnUnclick flag
to emit AIS_DragAction_Stop on mouse unclick.
---
 src/AIS/AIS_ViewController.cxx | 9 +++++++++
 src/AIS/AIS_ViewController.hxx | 1 +
 2 files changed, 10 insertions(+)

diff --git a/src/AIS/AIS_ViewController.cxx b/src/AIS/AIS_ViewController.cxx
index 0e2ce3a0a9..cc50aa91ba 100644
--- a/src/AIS/AIS_ViewController.cxx
+++ b/src/AIS/AIS_ViewController.cxx
@@ -69,6 +69,7 @@ AIS_ViewController::AIS_ViewController()
   myMousePressed        (Aspect_VKeyMouse_NONE),
   myMouseModifiers      (Aspect_VKeyFlags_NONE),
   myMouseSingleButton   (-1),
+  myMouseStopDragOnUnclick (false),
   //
   myTouchToleranceScale      (1.0f),
   myTouchRotationThresholdPx (6.0f),
@@ -611,6 +612,7 @@ bool AIS_ViewController::UpdateMouseButtons (const Graphic3d_Vec2i& thePoint,
     {
       myMouseClickTimer.Stop();
       myMouseClickCounter = 0;
+      myMouseStopDragOnUnclick = false;
       myUI.Dragging.ToStop = true;
       toUpdateView = true;
     }
@@ -619,6 +621,12 @@ bool AIS_ViewController::UpdateMouseButtons (const Graphic3d_Vec2i& thePoint,
   else if (theButtons == Aspect_VKeyMouse_NONE)
   {
     myMouseSingleButton = -1;
+    if (myMouseStopDragOnUnclick)
+    {
+      myMouseStopDragOnUnclick = false;
+      myUI.Dragging.ToStop = true;
+      toUpdateView = true;
+    }
   }
   else if (myMouseSingleButton == -1)
   {
@@ -769,6 +777,7 @@ bool AIS_ViewController::UpdateMousePosition (const Graphic3d_Vec2i& thePoint,
       myMouseClickTimer.Stop();
       myMouseClickCounter = 0;
       myMouseSingleButton = -1;
+      myMouseStopDragOnUnclick = true;
     }
   }
 
diff --git a/src/AIS/AIS_ViewController.hxx b/src/AIS/AIS_ViewController.hxx
index 7c566b2dcc..3adca9081e 100644
--- a/src/AIS/AIS_ViewController.hxx
+++ b/src/AIS/AIS_ViewController.hxx
@@ -647,6 +647,7 @@ protected: //! @name mouse input variables
   Aspect_VKeyMouse    myMousePressed;             //!< active mouse buttons
   Aspect_VKeyFlags    myMouseModifiers;           //!< active key modifiers passed with last mouse event
   Standard_Integer    myMouseSingleButton;        //!< index of mouse button pressed alone (>0)
+  Standard_Boolean    myMouseStopDragOnUnclick;   //!< queue stop dragging even with at next mouse unclick
 
 protected: //! @name multi-touch input variables