slideshow/source/engine/animationnodes/animationcolornode.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
  21 #include <com/sun/star/animations/AnimationColorSpace.hpp>
  22
  23 #include <coloranimation.hxx>
  24 #include <hslcoloranimation.hxx>
  25 #include "animationcolornode.hxx"
  26 #include <animationfactory.hxx>
  27 #include <activitiesfactory.hxx>
  28 #include <utility>
  29
  30 using namespace com::sun::star;
  31
  32 namespace slideshow::internal {
  33
  34 namespace {
  35 /** Little wrapper for HSL to RGB mapping.
  36
  37     This class implements the HSLColorAnimation interface,
  38     internally converting to RGB and forwarding to
  39     ColorAnimation.
  40 */
  41 class HSLWrapper : public HSLColorAnimation
  42 {
  43 public:
  44     explicit HSLWrapper( ColorAnimationSharedPtr xAnimation )
  45         : mpAnimation(std::move( xAnimation ))
  46     {
  47         ENSURE_OR_THROW(
  48             mpAnimation,
  49             "HSLWrapper::HSLWrapper(): Invalid color animation delegate" );
  50     }
  51
  52     virtual void prefetch() override
  53     {}
  54
  55     virtual void start( const AnimatableShapeSharedPtr&     rShape,
  56                         const ShapeAttributeLayerSharedPtr& rAttrLayer ) override
  57     {
  58         mpAnimation->start( rShape, rAttrLayer );
  59     }
  60
  61     virtual void end() override
  62     {
  63         mpAnimation->end();
  64     }
  65
  66     virtual bool operator()( const HSLColor& rColor ) override
  67     {
  68         return (*mpAnimation)( RGBColor( rColor ) );
  69     }
  70
  71     virtual HSLColor getUnderlyingValue() const override
  72     {
  73         return HSLColor( mpAnimation->getUnderlyingValue() );
  74     }
  75
  76 private:
  77     ColorAnimationSharedPtr mpAnimation;
  78 };
  79
  80 } // anon namespace
  81
  82 AnimationActivitySharedPtr AnimationColorNode::createActivity() const
  83 {
  84     ActivitiesFactory::CommonParameters aParms( fillCommonParameters() );
  85
  86     switch( mxColorNode->getColorInterpolation() )
  87     {
  88     case animations::AnimationColorSpace::RGB:
  89         return ActivitiesFactory::createAnimateActivity(
  90             aParms,
  91             AnimationFactory::createColorPropertyAnimation(
  92                 mxColorNode->getAttributeName(),
  93                 getShape(),
  94                 getContext().mpSubsettableShapeManager,
  95                 getSlideSize(),
  96                 getContext().mpBox2DWorld ),
  97             getXAnimateNode() );
  98
  99     case animations::AnimationColorSpace::HSL:
 100         // Wrap a plain ColorAnimation with the HSL
 101         // wrapper, which implements the HSLColorAnimation
 102         // interface, and internally converts HSL to RGB color
 103         return ActivitiesFactory::createAnimateActivity(
 104             aParms,
 105             std::make_shared<HSLWrapper>(
 106                     AnimationFactory::createColorPropertyAnimation(
 107                         mxColorNode->getAttributeName(),
 108                         getShape(),
 109                         getContext().mpSubsettableShapeManager,
 110                         getSlideSize(),
 111                         getContext().mpBox2DWorld )),
 112             mxColorNode );
 113
 114     default:
 115         ENSURE_OR_THROW( false, "AnimationColorNode::createColorActivity(): "
 116                           "Unexpected color space" );
 117     }
 118
 119     return AnimationActivitySharedPtr();
 120 }
 121
 122 } // namespace slideshow::internal
 123
 124 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */