convert sdr::animation::EventList to o3tl::sorted_vector

instead of home-grown linked list

Change-Id: I7cf24692e7b9919ac83e404e2d0167c3015b97de
Reviewed-on: https://gerrit.libreoffice.org/30569
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 41 insertions, 141 deletions

diff --git a/svx/source/sdr/animation/scheduler.cxx b/svx/source/sdr/animation/scheduler.cxx
index 38412725baf9..ea6bb8385882 100644
--- a/svx/source/sdr/animation/scheduler.cxx
+++ b/svx/source/sdr/animation/scheduler.cxx
@@ -28,9 +28,7 @@ namespace sdr
 {
     namespace animation
     {
-        Event::Event()
-        :   mnTime(0),
-            mpNext(nullptr)
+        Event::Event() : mnTime(0)
         {
         }
 
@@ -39,15 +37,6 @@ namespace sdr
         }
 
 
-        void Event::SetNext(Event* pNew)
-        {
-            if(pNew != mpNext)
-            {
-                mpNext = pNew;
-            }
-        }
-
-
         void Event::SetTime(sal_uInt32 nNew)
         {
             if(mnTime != nNew)
@@ -55,93 +44,13 @@ namespace sdr
                 mnTime = nNew;
             }
         }
-    } // end of namespace animation
-} // end of namespace sdr
-
-
-// eventlist class
 
-namespace sdr
-{
-    namespace animation
-    {
-        EventList::EventList()
-        :   mpHead(nullptr)
+        bool CompareEvent::operator()(Event* const& lhs, Event* const& rhs) const
         {
+            return lhs->GetTime() < rhs->GetTime();
         }
 
-        EventList::~EventList()
-        {
-            while(mpHead)
-            {
-                Event* pNext = mpHead->GetNext();
-                mpHead->SetNext(nullptr);
-                mpHead = pNext;
-            }
-        }
-
-        void EventList::Insert(Event* pNew)
-        {
-            if(pNew)
-            {
-                Event* pCurrent = mpHead;
-                Event* pPrev = nullptr;
-
-                while(pCurrent && pCurrent->GetTime() < pNew->GetTime())
-                {
-                    pPrev = pCurrent;
-                    pCurrent = pCurrent->GetNext();
-                }
-
-                if(pPrev)
-                {
-                    pNew->SetNext(pPrev->GetNext());
-                    pPrev->SetNext(pNew);
-                }
-                else
-                {
-                    pNew->SetNext(mpHead);
-                    mpHead = pNew;
-                }
-            }
-        }
-
-        void EventList::Remove(Event* pOld)
-        {
-            if(pOld && mpHead)
-            {
-                Event* pCurrent = mpHead;
-                Event* pPrev = nullptr;
-
-                while(pCurrent && pCurrent != pOld)
-                {
-                    pPrev = pCurrent;
-                    pCurrent = pCurrent->GetNext();
-                }
-
-                if(pPrev)
-                {
-                    pPrev->SetNext(pOld->GetNext());
-                }
-                else
-                {
-                    mpHead = pOld->GetNext();
-                }
-
-                pOld->SetNext(nullptr);
-            }
-        }
-
-    } // end of namespace animation
-} // end of namespace sdr
-
-
-// scheduler class
 
-namespace sdr
-{
-    namespace animation
-    {
         Scheduler::Scheduler()
         :   mnTime(0L),
             mnDeltaTime(0L),
@@ -169,38 +78,36 @@ namespace sdr
 
         void Scheduler::triggerEvents()
         {
-            Event* pNextEvent = maList.GetFirst();
+            if (maList.empty())
+                return;
 
-            if(pNextEvent)
-            {
-                // copy events which need to be executed to a vector. Remove them from
-                // the scheduler
-                ::std::vector< Event* > EventPointerVector;
+            // copy events which need to be executed to a vector. Remove them from
+            // the scheduler
+            ::std::vector< Event* > aToBeExecutedList;
 
-                while(pNextEvent && pNextEvent->GetTime() <= mnTime)
-                {
-                    maList.Remove(pNextEvent);
-                    EventPointerVector.push_back(pNextEvent);
-                    pNextEvent = maList.GetFirst();
-                }
+            while(!maList.empty() && maList[0]->GetTime() <= mnTime)
+            {
+                Event* pNextEvent = maList.front();
+                maList.erase(maList.begin());
+                aToBeExecutedList.push_back(pNextEvent);
+            }
 
-                // execute events from the vector
-                ::std::vector< Event* >::const_iterator aEnd = EventPointerVector.end();
-                for(::std::vector< Event* >::iterator aCandidate = EventPointerVector.begin();
-                    aCandidate != aEnd; ++aCandidate)
-                {
-                    // trigger event. This may re-insert the event to the scheduler again
-                    (*aCandidate)->Trigger(mnTime);
-                }
+            // execute events from the vector
+            ::std::vector< Event* >::const_iterator aEnd = aToBeExecutedList.end();
+            for(::std::vector< Event* >::iterator aCandidate = aToBeExecutedList.begin();
+                aCandidate != aEnd; ++aCandidate)
+            {
+                // trigger event. This may re-insert the event to the scheduler again
+                (*aCandidate)->Trigger(mnTime);
             }
         }
 
         void Scheduler::checkTimeout()
         {
             // re-start or stop timer according to event list
-            if(!IsPaused() && maList.GetFirst())
+            if(!IsPaused() && !maList.empty())
             {
-                mnDeltaTime = maList.GetFirst()->GetTime() - mnTime;
+                mnDeltaTime = maList.front()->GetTime() - mnTime;
 
                 if(0L != mnDeltaTime)
                 {
@@ -222,43 +129,36 @@ namespace sdr
             Stop();
             mnTime = nTime;
 
-            // get event pointer
-            Event* pEvent = maList.GetFirst();
+            if (maList.empty())
+                return;
 
-            if(pEvent)
+            // reset event time points
+            for (auto & rEvent : maList)
             {
-                // retet event time points
-                while(pEvent)
-                {
-                    pEvent->SetTime(nTime);
-                    pEvent = pEvent->GetNext();
-                }
-
-                if(!IsPaused())
-                {
-                    // without delta time, init events by triggering them. This will invalidate
-                    // painted objects and add them to the scheduler again
-                    mnDeltaTime = 0L;
-                    triggerEvents();
-                    checkTimeout();
-                }
+                rEvent->SetTime(nTime);
             }
+
+            if(!IsPaused())
+            {
+                // without delta time, init events by triggering them. This will invalidate
+                // painted objects and add them to the scheduler again
+                mnDeltaTime = 0L;
+                triggerEvents();
+                checkTimeout();
+             }
         }
 
         void Scheduler::InsertEvent(Event* pNew)
         {
-            if(pNew)
-            {
-                maList.Insert(pNew);
-                checkTimeout();
-            }
+            maList.insert(pNew);
+            checkTimeout();
         }
 
         void Scheduler::RemoveEvent(Event* pOld)
         {
-            if(pOld && maList.GetFirst())
+            if(!maList.empty())
             {
-                maList.Remove(pOld);
+                maList.erase(maList.find(pOld));
                 checkTimeout();
             }
         }