2 * Copyright (c) 2016 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "svg-visual.h"
22 #include <dali/public-api/images/buffer-image.h>
23 #include <dali/public-api/common/stage.h>
24 #include <dali/public-api/math/vector4.h>
25 #include <dali/devel-api/images/atlas.h>
26 #include <dali/devel-api/images/texture-set-image.h>
27 #include <dali/integration-api/debug.h>
30 #include <dali-toolkit/public-api/visuals/image-visual-properties.h>
31 #include <dali-toolkit/devel-api/visuals/visual-properties-devel.h>
32 #include <dali-toolkit/third-party/nanosvg/nanosvg.h>
33 #include <dali-toolkit/internal/visuals/svg/svg-rasterize-thread.h>
34 #include <dali-toolkit/internal/visuals/image/image-visual.h>
35 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
36 #include <dali-toolkit/internal/visuals/visual-factory-cache.h>
37 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
38 #include <dali-toolkit/internal/visuals/visual-base-data-impl.h>
43 const char * const UNITS("px");
45 const Dali::Vector4 FULL_TEXTURE_RECT(0.f, 0.f, 1.f, 1.f);
57 SvgVisualPtr SvgVisual::New( VisualFactoryCache& factoryCache, const std::string& imageUrl, const Property::Map& properties )
59 SvgVisualPtr svgVisual( new SvgVisual( factoryCache ) );
60 svgVisual->ParseFromUrl( imageUrl );
61 svgVisual->SetProperties( properties );
66 SvgVisualPtr SvgVisual::New( VisualFactoryCache& factoryCache, const std::string& imageUrl )
68 SvgVisualPtr svgVisual( new SvgVisual( factoryCache ) );
69 svgVisual->ParseFromUrl( imageUrl );
74 SvgVisual::SvgVisual( VisualFactoryCache& factoryCache )
75 : Visual::Base( factoryCache ),
76 mAtlasRect( FULL_TEXTURE_RECT ),
80 mVisualSize(Vector2::ZERO)
82 // the rasterized image is with pre-multiplied alpha format
83 mImpl->mFlags |= Impl::IS_PREMULTIPLIED_ALPHA;
86 SvgVisual::~SvgVisual()
90 nsvgDelete( mParsedImage );
94 void SvgVisual::DoSetProperties( const Property::Map& propertyMap )
96 // url already passed in from constructor
99 void SvgVisual::DoSetOnStage( Actor& actor )
101 Shader shader = ImageVisual::GetImageShader( mFactoryCache, true, true );
102 Geometry geometry = mFactoryCache.GetGeometry( VisualFactoryCache::QUAD_GEOMETRY );
103 TextureSet textureSet = TextureSet::New();
104 mImpl->mRenderer = Renderer::New( geometry, shader );
105 mImpl->mRenderer.SetTextures( textureSet );
107 // Register transform properties
108 mImpl->mTransform.RegisterUniforms( mImpl->mRenderer, Direction::LEFT_TO_RIGHT );
110 // Defer the rasterisation task until we get given a size (by Size Negotiation algorithm)
112 // Hold the weak handle of the placement actor and delay the adding of renderer until the svg rasterization is finished.
113 mPlacementActor = actor;
116 void SvgVisual::DoSetOffStage( Actor& actor )
118 mFactoryCache.GetSVGRasterizationThread()->RemoveTask( this );
120 actor.RemoveRenderer( mImpl->mRenderer );
121 mImpl->mRenderer.Reset();
122 mPlacementActor.Reset();
125 void SvgVisual::GetNaturalSize( Vector2& naturalSize )
129 naturalSize.x = mParsedImage->width;
130 naturalSize.y = mParsedImage->height;
134 naturalSize = Vector2::ZERO;
138 void SvgVisual::DoCreatePropertyMap( Property::Map& map ) const
141 map.Insert( Toolkit::DevelVisual::Property::TYPE, Toolkit::Visual::IMAGE );
142 if( !mImageUrl.empty() )
144 map.Insert( Toolkit::ImageVisual::Property::URL, mImageUrl );
148 void SvgVisual::ParseFromUrl( const std::string& imageUrl )
150 mImageUrl = imageUrl;
152 Vector2 dpi = Stage::GetCurrent().GetDpi();
153 float meanDpi = (dpi.height + dpi.width) * 0.5f;
154 mParsedImage = nsvgParseFromFile( imageUrl.c_str(), UNITS, meanDpi );
157 void SvgVisual::AddRasterizationTask( const Vector2& size )
159 if( mImpl->mRenderer && mParsedImage )
161 unsigned int width = static_cast<unsigned int>(size.width);
162 unsigned int height = static_cast<unsigned int>( size.height );
164 RasterizingTaskPtr newTask = new RasterizingTask( this, mParsedImage, width, height );
165 mFactoryCache.GetSVGRasterizationThread()->AddTask( newTask );
169 void SvgVisual::ApplyRasterizedImage( PixelData rasterizedPixelData )
173 TextureSet currentTextureSet = mImpl->mRenderer.GetTextures();
174 if( mAtlasRect != FULL_TEXTURE_RECT )
176 mFactoryCache.GetAtlasManager()->Remove( currentTextureSet, mAtlasRect );
180 TextureSet textureSet = mFactoryCache.GetAtlasManager()->Add(atlasRect, rasterizedPixelData );
181 if( textureSet ) // atlasing
183 if( textureSet != currentTextureSet )
185 mImpl->mRenderer.SetTextures( textureSet );
187 mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, atlasRect );
188 mAtlasRect = atlasRect;
189 mImpl->mFlags |= Impl::IS_ATLASING_APPLIED;
193 Texture texture = Texture::New( Dali::TextureType::TEXTURE_2D, Pixel::RGBA8888,
194 rasterizedPixelData.GetWidth(), rasterizedPixelData.GetHeight() );
195 texture.Upload( rasterizedPixelData );
196 mImpl->mFlags &= ~Impl::IS_ATLASING_APPLIED;
198 if( mAtlasRect == FULL_TEXTURE_RECT )
200 textureSet = currentTextureSet;
204 textureSet = TextureSet::New();
205 mImpl->mRenderer.SetTextures( textureSet );
207 mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, FULL_TEXTURE_RECT );
208 mAtlasRect = FULL_TEXTURE_RECT;
213 textureSet.SetTexture( 0, texture );
217 // Rasterized pixels are uploaded to texture. If weak handle is holding a placement actor, it is the time to add the renderer to actor.
218 Actor actor = mPlacementActor.GetHandle();
221 actor.AddRenderer( mImpl->mRenderer );
222 // reset the weak handle so that the renderer only get added to actor once
223 mPlacementActor.Reset();
228 void SvgVisual::OnSetTransform()
230 Vector2 visualSize = mImpl->mTransform.GetVisualSize( mImpl->mControlSize );
232 if( mParsedImage && IsOnStage() )
234 if( visualSize != mVisualSize )
236 AddRasterizationTask( visualSize );
237 mVisualSize = visualSize;
242 } // namespace Internal
244 } // namespace Toolkit