LCOV - code coverage report
Current view: top level - libreoffice/slideshow/source/engine - effectrewinder.cxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 0 133 0.0 %
Date: 2012-12-27 Functions: 0 23 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : 
      21             : #include "effectrewinder.hxx"
      22             : #include "eventqueue.hxx"
      23             : #include "usereventqueue.hxx"
      24             : #include "mouseeventhandler.hxx"
      25             : #include "animationnodes/basecontainernode.hxx"
      26             : #include "delayevent.hxx"
      27             : 
      28             : #include <com/sun/star/awt/MouseEvent.hpp>
      29             : #include <com/sun/star/animations/Event.hpp>
      30             : #include <com/sun/star/animations/EventTrigger.hpp>
      31             : #include <com/sun/star/container/XEnumerationAccess.hpp>
      32             : #include <boost/function.hpp>
      33             : #include <boost/bind.hpp>
      34             : #include <boost/enable_shared_from_this.hpp>
      35             : 
      36             : using ::com::sun::star::uno::Reference;
      37             : using namespace ::com::sun::star;
      38             : 
      39             : namespace slideshow { namespace internal {
      40             : 
      41             : 
      42             : namespace {
      43             : 
      44             : class RewinderEventHandler : public EventHandler
      45             : {
      46             : public:
      47             :     typedef ::boost::function<bool(void)> Action;
      48           0 :     RewinderEventHandler (const Action& rAction) : maAction(rAction) {}
      49           0 :     virtual ~RewinderEventHandler (void) {}
      50             : private:
      51             :     const Action maAction;
      52           0 :     virtual bool handleEvent (void) { return maAction(); }
      53             : };
      54             : 
      55             : 
      56             : 
      57             : class RewinderAnimationEventHandler : public AnimationEventHandler
      58             : {
      59             : public:
      60             :     typedef ::boost::function<bool(const AnimationNodeSharedPtr& rpNode)> Action;
      61           0 :     RewinderAnimationEventHandler (const Action& rAction) : maAction(rAction) {}
      62           0 :     virtual ~RewinderAnimationEventHandler (void) {}
      63             : private:
      64             :     const Action maAction;
      65           0 :     virtual bool handleAnimationEvent (const AnimationNodeSharedPtr& rpNode)
      66           0 :         { return maAction(rpNode); }
      67             : };
      68             : 
      69             : 
      70             : 
      71             : } // end of anonymous namespace
      72             : 
      73             : 
      74             : //----- EffectRewinder --------------------------------------------------------------
      75             : 
      76           0 : EffectRewinder::EffectRewinder (
      77             :     EventMultiplexer& rEventMultiplexer,
      78             :     EventQueue& rEventQueue,
      79             :     UserEventQueue& rUserEventQueue)
      80             :     : mrEventMultiplexer(rEventMultiplexer),
      81             :       mrEventQueue(rEventQueue),
      82             :       mrUserEventQueue(rUserEventQueue),
      83             :       mpSlideStartHandler(),
      84             :       mpSlideEndHandler(),
      85             :       mpAnimationStartHandler(),
      86             :       mnMainSequenceEffectCount(0),
      87             :       mpAsynchronousRewindEvent(),
      88             :       mxCurrentAnimationRootNode(),
      89           0 :       mbNonUserTriggeredMainSequenceEffectSeen(false)
      90             : {
      91           0 :     initialize();
      92           0 : }
      93             : 
      94             : 
      95             : 
      96             : 
      97           0 : void EffectRewinder::initialize (void)
      98             : {
      99             :     // Add some event handlers so that we are informed when
     100             :     // a) an animation is started (we then check whether that belongs to a
     101             :     // main sequence effect and if so, increase the respective counter),
     102             :     // b,c) a slide was started or ended (in which case the effect counter
     103             :     // is reset.
     104             : 
     105             :     mpAnimationStartHandler.reset(
     106             :         new RewinderAnimationEventHandler(
     107           0 :             ::boost::bind(&EffectRewinder::notifyAnimationStart, this, _1)));
     108           0 :     mrEventMultiplexer.addAnimationStartHandler(mpAnimationStartHandler);
     109             : 
     110             :     mpSlideStartHandler.reset(
     111             :         new RewinderEventHandler(
     112           0 :             ::boost::bind(&EffectRewinder::resetEffectCount, this)));
     113           0 :     mrEventMultiplexer.addSlideStartHandler(mpSlideStartHandler);
     114             : 
     115             :     mpSlideEndHandler.reset(
     116             :         new RewinderEventHandler(
     117           0 :             ::boost::bind(&EffectRewinder::resetEffectCount, this)));
     118           0 :     mrEventMultiplexer.addSlideEndHandler(mpSlideEndHandler);
     119           0 : }
     120             : 
     121             : 
     122             : 
     123             : 
     124           0 : EffectRewinder::~EffectRewinder (void)
     125             : {
     126           0 :     dispose();
     127           0 : }
     128             : 
     129             : 
     130             : 
     131             : 
     132           0 : void EffectRewinder::dispose (void)
     133             : {
     134           0 :     if (mpAsynchronousRewindEvent)
     135             :     {
     136           0 :         mpAsynchronousRewindEvent->dispose();
     137           0 :         mpAsynchronousRewindEvent.reset();
     138             :     }
     139             : 
     140           0 :     if (mpAnimationStartHandler)
     141             :     {
     142           0 :         mrEventMultiplexer.removeAnimationStartHandler(mpAnimationStartHandler);
     143           0 :         mpAnimationStartHandler.reset();
     144             :     }
     145             : 
     146           0 :     if (mpSlideStartHandler)
     147             :     {
     148           0 :         mrEventMultiplexer.removeSlideStartHandler(mpSlideStartHandler);
     149           0 :         mpSlideStartHandler.reset();
     150             :     }
     151             : 
     152           0 :     if (mpSlideEndHandler)
     153             :     {
     154           0 :         mrEventMultiplexer.removeSlideEndHandler(mpSlideEndHandler);
     155           0 :         mpSlideEndHandler.reset();
     156             :     }
     157           0 : }
     158             : 
     159             : 
     160             : 
     161             : 
     162           0 : void EffectRewinder::setRootAnimationNode (
     163             :     const uno::Reference<animations::XAnimationNode>& xRootNode)
     164             : {
     165           0 :     mxCurrentAnimationRootNode = xRootNode;
     166           0 : }
     167             : 
     168             : 
     169             : 
     170             : 
     171           0 : bool EffectRewinder::rewind (
     172             :     const ::boost::shared_ptr<ScreenUpdater::UpdateLock>& rpPaintLock,
     173             :     const ::boost::function<void(void)>& rSlideRewindFunctor,
     174             :     const ::boost::function<void(void)>& rPreviousSlideFunctor)
     175             : {
     176           0 :     mpPaintLock = rpPaintLock;
     177             : 
     178             :     // Do not allow nested rewinds.
     179           0 :     if (mpAsynchronousRewindEvent)
     180             :     {
     181             :         OSL_ASSERT( ! mpAsynchronousRewindEvent);
     182           0 :         return false;
     183             :     }
     184             : 
     185             :     // Abort (and skip over the rest of) any currently active animation.
     186           0 :     mrUserEventQueue.callSkipEffectEventHandler();
     187           0 :     mrEventQueue.forceEmpty();
     188             : 
     189           0 :     const int nSkipCount (mnMainSequenceEffectCount - 1);
     190           0 :     if (nSkipCount < 0)
     191             :     {
     192           0 :         if ( ! rPreviousSlideFunctor)
     193             :         {
     194             :             OSL_ASSERT(rPreviousSlideFunctor);
     195           0 :             return false;
     196             :         }
     197             : 
     198             :         // No main sequence effects to rewind on the current slide.
     199             :         // Go back to the previous slide.
     200           0 :         mpAsynchronousRewindEvent = makeEvent(
     201             :             ::boost::bind(
     202             :                 &EffectRewinder::asynchronousRewindToPreviousSlide,
     203             :                 this,
     204             :                 rPreviousSlideFunctor),
     205           0 :             "EffectRewinder::asynchronousRewindToPreviousSlide");
     206             :     }
     207             :     else
     208             :     {
     209             :         // The actual rewinding is done asynchronously so that we can safely
     210             :         // call other methods.
     211           0 :         mpAsynchronousRewindEvent = makeEvent(
     212             :             ::boost::bind(
     213             :                 &EffectRewinder::asynchronousRewind,
     214             :                 this,
     215             :                 nSkipCount,
     216             :                 true,
     217             :                 rSlideRewindFunctor),
     218           0 :             "EffectRewinder::asynchronousRewind");
     219             :     }
     220             : 
     221           0 :     if (mpAsynchronousRewindEvent)
     222           0 :         mrEventQueue.addEvent(mpAsynchronousRewindEvent);
     223             : 
     224           0 :     return mpAsynchronousRewindEvent.get()!=NULL;
     225             : }
     226             : 
     227             : 
     228             : 
     229             : 
     230           0 : void EffectRewinder::skipAllMainSequenceEffects (void)
     231             : {
     232             :     // Do not allow nested rewinds.
     233           0 :     if (mpAsynchronousRewindEvent)
     234             :     {
     235             :         OSL_ASSERT(!mpAsynchronousRewindEvent);
     236           0 :         return;
     237             :     }
     238             : 
     239           0 :     const int nTotalMainSequenceEffectCount (countMainSequenceEffects());
     240           0 :     mpAsynchronousRewindEvent = makeEvent(
     241             :         ::boost::bind(
     242             :             &EffectRewinder::asynchronousRewind,
     243             :             this,
     244             :             nTotalMainSequenceEffectCount,
     245             :             false,
     246             :             ::boost::function<void(void)>()),
     247           0 :         "EffectRewinder::asynchronousRewind");
     248           0 :     mrEventQueue.addEvent(mpAsynchronousRewindEvent);
     249             : }
     250             : 
     251             : 
     252             : 
     253             : 
     254           0 : sal_Int32 EffectRewinder::countMainSequenceEffects (void)
     255             : {
     256             :     // Determine the number of main sequence effects.
     257           0 :     sal_Int32 nMainSequenceNodeCount (0);
     258             : 
     259           0 :     ::std::queue<uno::Reference<animations::XAnimationNode> > aNodeQueue;
     260           0 :     aNodeQueue.push(mxCurrentAnimationRootNode);
     261           0 :     while ( ! aNodeQueue.empty())
     262             :     {
     263           0 :         const uno::Reference<animations::XAnimationNode> xNode (aNodeQueue.front());
     264           0 :         aNodeQueue.pop();
     265             : 
     266             :         // Does the current node belong to the main sequence?
     267           0 :         if (xNode.is())
     268             :         {
     269           0 :             animations::Event aEvent;
     270           0 :             if (xNode->getBegin() >>= aEvent)
     271           0 :                 if (aEvent.Trigger == animations::EventTrigger::ON_NEXT)
     272           0 :                     ++nMainSequenceNodeCount;
     273             :         }
     274             : 
     275             :         // If the current node is a container then prepare its children for investigation.
     276           0 :         uno::Reference<container::XEnumerationAccess> xEnumerationAccess (xNode, uno::UNO_QUERY);
     277           0 :         if (xEnumerationAccess.is())
     278             :         {
     279             :             uno::Reference<container::XEnumeration> xEnumeration (
     280           0 :                 xEnumerationAccess->createEnumeration());
     281           0 :             if (xEnumeration.is())
     282           0 :                 while (xEnumeration->hasMoreElements())
     283             :                 {
     284             :                     aNodeQueue.push(
     285             :                         uno::Reference<animations::XAnimationNode>(
     286           0 :                             xEnumeration->nextElement(), uno::UNO_QUERY));
     287           0 :                 }
     288             :         }
     289           0 :     }
     290             : 
     291           0 :     return nMainSequenceNodeCount;
     292             : }
     293             : 
     294             : 
     295             : 
     296             : 
     297           0 : void EffectRewinder::skipSingleMainSequenceEffects (void)
     298             : {
     299             :     // This basically just starts the next effect and then skips over its
     300             :     // animation.
     301           0 :     mrEventMultiplexer.notifyNextEffect();
     302           0 :     mrEventQueue.forceEmpty();
     303           0 :     mrUserEventQueue.callSkipEffectEventHandler();
     304           0 :     mrEventQueue.forceEmpty();
     305           0 : }
     306             : 
     307             : 
     308             : 
     309             : 
     310           0 : bool EffectRewinder::resetEffectCount (void)
     311             : {
     312           0 :     mnMainSequenceEffectCount = 0;
     313           0 :     return false;
     314             : }
     315             : 
     316             : 
     317             : 
     318             : 
     319           0 : bool EffectRewinder::notifyAnimationStart (const AnimationNodeSharedPtr& rpNode)
     320             : {
     321             :     // This notification is only relevant for us when the rpNode belongs to
     322             :     // the main sequence.
     323           0 :     BaseNodeSharedPtr pBaseNode (::boost::dynamic_pointer_cast<BaseNode>(rpNode));
     324           0 :     if ( ! pBaseNode)
     325           0 :         return false;
     326             : 
     327           0 :     BaseContainerNodeSharedPtr pParent (pBaseNode->getParentNode());
     328           0 :     if ( ! (pParent && pParent->isMainSequenceRootNode()))
     329           0 :         return false;
     330             : 
     331             :     // This notification is only relevant for us when the effect is user
     332             :     // triggered.
     333           0 :     bool bIsUserTriggered (false);
     334             : 
     335           0 :     Reference<animations::XAnimationNode> xNode (rpNode->getXAnimationNode());
     336           0 :     if (xNode.is())
     337             :     {
     338           0 :         animations::Event aEvent;
     339           0 :         if ((xNode->getBegin() >>= aEvent))
     340           0 :             bIsUserTriggered = (aEvent.Trigger == animations::EventTrigger::ON_NEXT);
     341             :     }
     342             : 
     343           0 :     if (bIsUserTriggered)
     344           0 :         ++mnMainSequenceEffectCount;
     345             :     else
     346           0 :         mbNonUserTriggeredMainSequenceEffectSeen = true;
     347             : 
     348           0 :     return false;
     349             : }
     350             : 
     351             : 
     352             : 
     353             : 
     354           0 : void EffectRewinder::asynchronousRewind (
     355             :     sal_Int32 nEffectCount,
     356             :     const bool bRedisplayCurrentSlide,
     357             :     const boost::function<void(void)>& rSlideRewindFunctor)
     358             : {
     359             :     OSL_ASSERT(mpAsynchronousRewindEvent);
     360             : 
     361           0 :     if (bRedisplayCurrentSlide)
     362             :     {
     363           0 :         mpPaintLock->Activate();
     364             :         // Re-display the current slide.
     365           0 :         if (rSlideRewindFunctor)
     366           0 :             rSlideRewindFunctor();
     367           0 :         mpAsynchronousRewindEvent = makeEvent(
     368             :             ::boost::bind(
     369             :                 &EffectRewinder::asynchronousRewind,
     370             :                 this,
     371             :                 nEffectCount,
     372             :                 false,
     373             :                 rSlideRewindFunctor),
     374           0 :             "EffectRewinder::asynchronousRewind");
     375           0 :         mrEventQueue.addEvent(mpAsynchronousRewindEvent);
     376             :     }
     377             :     else
     378             :     {
     379             :         // Process initial events and skip any animations that are started
     380             :         // when the slide is shown.
     381           0 :         mbNonUserTriggeredMainSequenceEffectSeen = false;
     382           0 :         mrEventQueue.forceEmpty();
     383           0 :         if (mbNonUserTriggeredMainSequenceEffectSeen)
     384             :         {
     385           0 :             mrUserEventQueue.callSkipEffectEventHandler();
     386           0 :             mrEventQueue.forceEmpty();
     387             :         }
     388             : 
     389           0 :         while (--nEffectCount >= 0)
     390           0 :             skipSingleMainSequenceEffects();
     391             : 
     392           0 :         mpAsynchronousRewindEvent.reset();
     393           0 :         mpPaintLock.reset();
     394             :     }
     395           0 : }
     396             : 
     397             : 
     398             : 
     399             : 
     400           0 : void EffectRewinder::asynchronousRewindToPreviousSlide (
     401             :     const ::boost::function<void(void)>& rSlideRewindFunctor)
     402             : {
     403             :     OSL_ASSERT(mpAsynchronousRewindEvent);
     404             : 
     405           0 :     mpAsynchronousRewindEvent.reset();
     406           0 :     rSlideRewindFunctor();
     407           0 : }
     408             : 
     409             : 
     410             : 
     411             : 
     412           0 : } } // end of namespace ::slideshow::internal
     413             : 
     414             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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