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