From 4b4154e06aba65daeab5178a0ac3998c8383318a Mon Sep 17 00:00:00 2001
From: mpv <mikhail.ponikarov@opencascade.com>
Date: Mon, 8 Dec 2014 19:24:24 +0300
Subject: [PATCH] Speed up the redraw of sketch with constraints moved by the
 point of the line

---
 src/Events/Events_Loop.cpp                    | 27 +++++++++++++++----
 src/Events/Events_Loop.h                      |  5 ++++
 src/Model/Model_Update.cpp                    |  2 +-
 .../SketchSolver_ConstraintManager.cpp        | 14 ++++++++--
 4 files changed, 40 insertions(+), 8 deletions(-)

diff --git a/src/Events/Events_Loop.cpp b/src/Events/Events_Loop.cpp
index 9447c376b..f9b9d0046 100644
--- a/src/Events/Events_Loop.cpp
+++ b/src/Events/Events_Loop.cpp
@@ -115,14 +115,18 @@ void Events_Loop::flush(const Events_ID& theID)
 {
   if (!myFlushActive)
     return;
-  std::map<char*, std::shared_ptr<Events_Message>>::iterator aMyGroup =
-    myGroups.find(theID.eventText());
-  if (aMyGroup != myGroups.end()) {  // really sends
-    myFlushed.insert(theID.myID);
+  std::map<char*, std::shared_ptr<Events_Message> >::iterator aMyGroup;
+  for(aMyGroup = myGroups.find(theID.eventText());
+    aMyGroup != myGroups.end(); aMyGroup = myGroups.find(theID.eventText()))
+  {  // really sends
+    bool aWasFlushed = myFlushed.find(theID.myID) != myFlushed.end();
+    if (!aWasFlushed)
+      myFlushed.insert(theID.myID);
     std::shared_ptr<Events_Message> aGroup = aMyGroup->second;
     myGroups.erase(aMyGroup);
     send(aGroup, false);
-    myFlushed.erase(myFlushed.find(theID.myID));
+    if (!aWasFlushed)
+      myFlushed.erase(myFlushed.find(theID.myID));
   }
 }
 
@@ -147,3 +151,16 @@ void Events_Loop::autoFlush(const Events_ID& theID, const bool theAuto)
   else
     myFlushed.erase(myFlushed.find(theID.myID));
 }
+
+bool Events_Loop::isFlushed(const Events_ID& theID)
+{
+  return myFlushed.find(theID.myID) != myFlushed.end();
+}
+
+void Events_Loop::setFlushed(const Events_ID& theID, const bool theValue)
+{
+  if (theValue)
+    myFlushed.insert(theID.myID);
+  else
+    myFlushed.erase(myFlushed.find(theID.myID));
+}
diff --git a/src/Events/Events_Loop.h b/src/Events/Events_Loop.h
index c8b7798c0..317c62d3b 100644
--- a/src/Events/Events_Loop.h
+++ b/src/Events/Events_Loop.h
@@ -72,6 +72,11 @@ class Events_Loop
 
   //! Enables flush without grouping for the given message
   EVENTS_EXPORT void autoFlush(const Events_ID& theID, const bool theAuto = true);
+
+  //! Returns true if the evement is flushed right now
+  EVENTS_EXPORT bool isFlushed(const Events_ID& theID);
+  //! Sets the flag that the event is flished right now
+  EVENTS_EXPORT void setFlushed(const Events_ID& theID, const bool theValue);
 };
 
 #endif
diff --git a/src/Model/Model_Update.cpp b/src/Model/Model_Update.cpp
index 31c8b7565..3a70e463a 100644
--- a/src/Model/Model_Update.cpp
+++ b/src/Model/Model_Update.cpp
@@ -163,7 +163,7 @@ void Model_Update::updateInDoc(std::shared_ptr<ModelAPI_Document> theDoc)
 
 void Model_Update::redisplayWithResults(FeaturePtr theFeature, const ModelAPI_ExecState theState) 
 {
-  // maske updated and redisplay all results
+  // make updated and redisplay all results
   static Events_ID EVENT_DISP = Events_Loop::loop()->eventByName(EVENT_OBJECT_TO_REDISPLAY);
   const std::list<std::shared_ptr<ModelAPI_Result> >& aResults = theFeature->results();
   std::list<std::shared_ptr<ModelAPI_Result> >::const_iterator aRIter = aResults.begin();
diff --git a/src/SketchSolver/SketchSolver_ConstraintManager.cpp b/src/SketchSolver/SketchSolver_ConstraintManager.cpp
index 3ba3fdda4..a69eb95bc 100644
--- a/src/SketchSolver/SketchSolver_ConstraintManager.cpp
+++ b/src/SketchSolver/SketchSolver_ConstraintManager.cpp
@@ -374,14 +374,24 @@ void SketchSolver_ConstraintManager::resolveConstraints()
 {
   myIsComputed = true;
   bool needToUpdate = false;
+  static Events_ID anUpdateEvent = Events_Loop::eventByName(EVENT_OBJECT_UPDATED);
+  // to avoid redisplay of each segment on update by solver one by one in the viewer
+  bool isUpdateFlushed = Events_Loop::loop()->isFlushed(anUpdateEvent);
+  if (isUpdateFlushed) {
+    Events_Loop::loop()->setFlushed(anUpdateEvent, false);
+  }
+
   std::vector<SketchSolver_ConstraintGroup*>::iterator aGroupIter;
   for (aGroupIter = myGroups.begin(); aGroupIter != myGroups.end(); aGroupIter++)
     if ((*aGroupIter)->resolveConstraints())
       needToUpdate = true;
 
-  // Features may be updated => send events
+  // Features may be updated => now send events, btu for all changed at once
+  if (isUpdateFlushed) {
+    Events_Loop::loop()->setFlushed(anUpdateEvent, true);
+  }
   if (needToUpdate)
-    Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_UPDATED));
+    Events_Loop::loop()->flush(anUpdateEvent);
   myIsComputed = false;
 }
 
-- 
2.39.2