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 // must be first
  22 #include <canvas/debug.hxx>
  23 #include <canvas/verbosetrace.hxx>
  24 #include <com/sun/star/animations/AnimationColorSpace.hpp>
  25
  26 #include "coloranimation.hxx"
  27 #include "hslcoloranimation.hxx"
  28 #include "animationcolornode.hxx"
  29 #include "animationfactory.hxx"
  30 #include "activitiesfactory.hxx"
  31
  32 using namespace com::sun::star;
  33
  34 namespace slideshow {
  35 namespace internal {
  36
  37 namespace {
  38 /** Little wrapper for HSL to RGB mapping.
  39
  40     This class implements the HSLColorAnimation interface,
  41     internally converting to RGB and forwarding to
  42     ColorAnimation.
  43 */
  44 class HSLWrapper : public HSLColorAnimation
  45 {
  46 public:
  47     HSLWrapper( const ColorAnimationSharedPtr& rAnimation )
  48         : mpAnimation( rAnimation )
  49     {
  50         ENSURE_OR_THROW(
  51             mpAnimation,
  52             "HSLWrapper::HSLWrapper(): Invalid color animation delegate" );
  53     }
  54
  55     virtual void prefetch( const AnimatableShapeSharedPtr&,
  56                            const ShapeAttributeLayerSharedPtr& ) SAL_OVERRIDE
  57     {}
  58
  59     virtual void start( const AnimatableShapeSharedPtr&     rShape,
  60                         const ShapeAttributeLayerSharedPtr& rAttrLayer ) SAL_OVERRIDE
  61     {
  62         mpAnimation->start( rShape, rAttrLayer );
  63     }
  64
  65     virtual void end() SAL_OVERRIDE
  66     {
  67         mpAnimation->end();
  68     }
  69
  70     virtual bool operator()( const HSLColor& rColor ) SAL_OVERRIDE
  71     {
  72         return (*mpAnimation)( RGBColor( rColor ) );
  73     }
  74
  75     virtual HSLColor getUnderlyingValue() const SAL_OVERRIDE
  76     {
  77         return HSLColor( mpAnimation->getUnderlyingValue() );
  78     }
  79
  80 private:
  81     ColorAnimationSharedPtr mpAnimation;
  82 };
  83
  84 } // anon namespace
  85
  86 AnimationActivitySharedPtr AnimationColorNode::createActivity() const
  87 {
  88     ActivitiesFactory::CommonParameters aParms( fillCommonParameters() );
  89
  90     switch( mxColorNode->getColorInterpolation() )
  91     {
  92     case animations::AnimationColorSpace::RGB:
  93         return ActivitiesFactory::createAnimateActivity(
  94             aParms,
  95             AnimationFactory::createColorPropertyAnimation(
  96                 mxColorNode->getAttributeName(),
  97                 getShape(),
  98                 getContext().mpSubsettableShapeManager,
  99                 getSlideSize() ),
 100             getXAnimateNode() );
 101
 102     case animations::AnimationColorSpace::HSL:
 103         // Wrap a plain ColorAnimation with the HSL
 104         // wrapper, which implements the HSLColorAnimation
 105         // interface, and internally converts HSL to RGB color
 106         return ActivitiesFactory::createAnimateActivity(
 107             aParms,
 108             HSLColorAnimationSharedPtr(
 109                 new HSLWrapper(
 110                     AnimationFactory::createColorPropertyAnimation(
 111                         mxColorNode->getAttributeName(),
 112                         getShape(),
 113                         getContext().mpSubsettableShapeManager,
 114                         getSlideSize() ))),
 115             mxColorNode );
 116
 117     default:
 118         ENSURE_OR_THROW( false, "AnimationColorNode::createColorActivity(): "
 119                           "Unexpected color space" );
 120     }
 121
 122     return AnimationActivitySharedPtr();
 123 }
 124
 125 } // namespace internal
 126 } // namespace slideshow
 127
 128 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */