svx/source/sdr/animation/animationstate.cxx

   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 #include <svx/sdr/animation/animationstate.hxx>
  21 #include <svx/sdr/contact/viewobjectcontact.hxx>
  22 #include <svx/sdr/animation/objectanimator.hxx>
  23 #include <svx/sdr/contact/objectcontact.hxx>
  24 #include <drawinglayer/primitive2d/animatedprimitive2d.hxx>
  25 #include <drawinglayer/animation/animationtiming.hxx>
  26 #include <comphelper/lok.hxx>
  27
  28
  29 namespace sdr::animation
  30 {
  31         double PrimitiveAnimation::getSmallestNextTime(double fCurrentTime)
  32         {
  33             double fRetval(0.0);
  34
  35             if(!maAnimatedPrimitives.empty())
  36             {
  37                 const sal_Int32 nCount(maAnimatedPrimitives.size());
  38
  39                 for(sal_Int32 a(0); a < nCount; a++)
  40                 {
  41                     const drawinglayer::primitive2d::Primitive2DReference xRef(maAnimatedPrimitives[a]);
  42                     const drawinglayer::primitive2d::AnimatedSwitchPrimitive2D* pCandidate = static_cast< const drawinglayer::primitive2d::AnimatedSwitchPrimitive2D* >(xRef.get());
  43
  44                     const drawinglayer::animation::AnimationEntry& rAnimEntry = pCandidate->getAnimationEntry();
  45                     const double fNextTime(rAnimEntry.getNextEventTime(fCurrentTime));
  46
  47                     if(!::basegfx::fTools::equalZero(fNextTime))
  48                     {
  49                         if(::basegfx::fTools::equalZero(fRetval))
  50                         {
  51                             fRetval = fNextTime;
  52                         }
  53                         else if(::basegfx::fTools::less(fNextTime, fRetval))
  54                         {
  55                             fRetval = fNextTime;
  56                         }
  57                     }
  58                 }
  59             }
  60
  61             return fRetval;
  62         }
  63
  64         void PrimitiveAnimation::prepareNextEvent()
  65         {
  66             const double fCurrentTime(mrVOContact.GetObjectContact().getPrimitiveAnimator().GetTime());
  67             const double fNextTime(getSmallestNextTime(fCurrentTime));
  68
  69             // getSmallestNextTime will be zero when animation ended. If not zero, a next step
  70             // exists
  71             if(::basegfx::fTools::equalZero(fNextTime))
  72                 return;
  73
  74             // next time point exists, use it
  75             sal_uInt32 nNextTime;
  76
  77             if(fNextTime >= double(0xffffff00))
  78             {
  79                 // take care for very late points in time, e.g. when a text animation stops
  80                 // in a defined AnimationEntryFixed with endless (0xffffffff) duration
  81                 nNextTime = GetTime() + (1000 * 60 * 60); // one hour, works with vcl timers, 0xffffff00 was too much...
  82             }
  83             else
  84             {
  85                 nNextTime = static_cast<sal_uInt32>(fNextTime);
  86             }
  87
  88             // ensure step forward in integer timing, the floating step difference maybe smaller than 1.0. Use
  89             // at least 25ms for next step
  90             const sal_uInt32 nMinimumStepTime(static_cast<sal_uInt32>(fCurrentTime) + 25);
  91
  92             if(nNextTime <= nMinimumStepTime)
  93             {
  94                 nNextTime = nMinimumStepTime;
  95             }
  96
  97             // set time and reactivate by re-adding to the scheduler
  98             SetTime(nNextTime);
  99             mrVOContact.GetObjectContact().getPrimitiveAnimator().InsertEvent(*this);
 100         }
 101
 102         PrimitiveAnimation::PrimitiveAnimation(sdr::contact::ViewObjectContact& rVOContact, drawinglayer::primitive2d::Primitive2DContainer&& rAnimatedPrimitives)
 103         :   mrVOContact(rVOContact),
 104             maAnimatedPrimitives(std::move(rAnimatedPrimitives))
 105         {
 106             if (!comphelper::LibreOfficeKit::isActive())
 107                 // setup initially
 108                 prepareNextEvent();
 109         }
 110
 111         PrimitiveAnimation::~PrimitiveAnimation()
 112         {
 113             // ensure that Event member is removed from PrimitiveAnimator
 114             mrVOContact.GetObjectContact().getPrimitiveAnimator().RemoveEvent(this);
 115         }
 116
 117         // execute event, from base class Event
 118         void PrimitiveAnimation::Trigger(sal_uInt32 /*nTime*/)
 119         {
 120             // schedule a repaint of associated object
 121             mrVOContact.ActionChanged();
 122
 123             if (!comphelper::LibreOfficeKit::isActive())
 124                 // re-setup
 125                 prepareNextEvent();
 126         }
 127
 128 } // end of namespace
 129
 130 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */