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-renderer.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/integration-api/debug.h>
29 #include "nanosvg/nanosvg.h"
30 #include "svg-rasterize-thread.h"
31 #include <dali-toolkit/internal/controls/renderers/image/image-renderer.h>
32 #include <dali-toolkit/internal/controls/renderers/renderer-factory-cache.h>
33 #include <dali-toolkit/internal/controls/renderers/control-renderer-data-impl.h>
38 const char * const RENDERER_TYPE("rendererType");
39 const char * const RENDERER_TYPE_VALUE("svg");
40 const char * const IMAGE_URL_NAME("imageUrl");
41 const char * const UNITS("px");
43 const std::string TEXTURE_UNIFORM_NAME = "sTexture";
44 const std::string ATLAS_RECT_UNIFORM_NAME = "uAtlasRect";
46 const Dali::Vector4 FULL_TEXTURE_RECT(0.f, 0.f, 1.f, 1.f);
58 SvgRenderer::SvgRenderer( RendererFactoryCache& factoryCache, ImageAtlasManager& atlasManager )
59 : ControlRenderer( factoryCache ),
60 mAtlasRect( FULL_TEXTURE_RECT ),
61 mAtlasManager( atlasManager ),
64 // the rasterized image is with pre-multiplied alpha format
65 mImpl->mFlags |= Impl::IS_PREMULTIPLIED_ALPHA;
68 SvgRenderer::~SvgRenderer()
72 nsvgDelete( mParsedImage );
76 bool SvgRenderer::IsSvgUrl( const std::string& url )
78 return url.substr( url.find_last_of(".") + 1 ) == "svg";
81 void SvgRenderer::DoInitialize( Actor& actor, const Property::Map& propertyMap )
83 Property::Value* imageURLValue = propertyMap.Find( IMAGE_URL_NAME );
87 if( imageURLValue->Get( imageUrl ) )
93 DALI_LOG_ERROR( "The property '%s' is not a string\n", IMAGE_URL_NAME );
98 void SvgRenderer::DoSetOnStage( Actor& actor )
100 Shader shader = ImageRenderer::GetImageShader( mFactoryCache );
101 Geometry geometry = mFactoryCache.GetGeometry( RendererFactoryCache::QUAD_GEOMETRY );
104 geometry = mFactoryCache.CreateQuadGeometry();
105 mFactoryCache.SaveGeometry( RendererFactoryCache::QUAD_GEOMETRY, geometry );
107 TextureSet textureSet = TextureSet::New();
108 mImpl->mRenderer = Renderer::New( geometry, shader );
109 mImpl->mRenderer.SetTextures( textureSet );
111 if( mImpl->mSize != Vector2::ZERO && mParsedImage )
113 AddRasterizationTask( mImpl->mSize );
117 void SvgRenderer::DoSetOffStage( Actor& actor )
119 mFactoryCache.GetSVGRasterizationThread()->RemoveTask( this );
121 actor.RemoveRenderer( mImpl->mRenderer );
122 mImpl->mRenderer.Reset();
125 void SvgRenderer::GetNaturalSize( Vector2& naturalSize ) const
129 naturalSize.x = mParsedImage->width;
130 naturalSize.y = mParsedImage->height;
134 naturalSize = Vector2::ZERO;
138 void SvgRenderer::SetSize( const Vector2& size )
140 if(mImpl->mSize != size && mParsedImage && GetIsOnStage() )
142 AddRasterizationTask( size );
147 void SvgRenderer::DoCreatePropertyMap( Property::Map& map ) const
150 map.Insert( RENDERER_TYPE, RENDERER_TYPE_VALUE );
151 if( !mImageUrl.empty() )
153 map.Insert( IMAGE_URL_NAME, mImageUrl );
157 void SvgRenderer::SetImage( const std::string& imageUrl, ImageDimensions size )
159 if( mImageUrl != imageUrl )
161 mImageUrl = imageUrl;
163 NSVGimage* parsedImageOld = mParsedImage;
165 Vector2 dpi = Stage::GetCurrent().GetDpi();
166 float meanDpi = (dpi.height + dpi.width) * 0.5f;
167 mParsedImage = nsvgParseFromFile(mImageUrl.c_str(), UNITS, meanDpi);
169 if( size.GetWidth() != 0u && size.GetHeight() != 0u)
171 mImpl->mSize.x = size.GetWidth();
172 mImpl->mSize.y = size.GetHeight();
175 if( mImpl->mSize != Vector2::ZERO && GetIsOnStage() )
177 AddRasterizationTask( mImpl->mSize );
180 mFactoryCache.GetSVGRasterizationThread()->DeleteImage( parsedImageOld );
184 void SvgRenderer::AddRasterizationTask( const Vector2& size )
186 if( mImpl->mRenderer && mParsedImage )
188 unsigned int width = static_cast<unsigned int>(size.width);
189 unsigned int height = static_cast<unsigned int>( size.height );
190 BufferImage image = BufferImage::New( width, height, Pixel::RGBA8888);
192 RasterizingTaskPtr newTask = new RasterizingTask( this, mParsedImage, width, height );
193 mFactoryCache.GetSVGRasterizationThread()->AddTask( newTask );
197 void SvgRenderer::ApplyRasterizedImage( PixelDataPtr rasterizedPixelData )
201 TextureSet currentTextureSet = mImpl->mRenderer.GetTextures();
202 if( mAtlasRect != FULL_TEXTURE_RECT )
204 mAtlasManager.Remove( currentTextureSet, mAtlasRect );
208 TextureSet textureSet = mAtlasManager.Add(atlasRect, rasterizedPixelData );
209 if( textureSet ) // atlasing
211 if( textureSet != currentTextureSet )
213 mImpl->mRenderer.SetTextures( textureSet );
215 mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, atlasRect );
216 mAtlasRect = atlasRect;
220 Atlas texture = Atlas::New( rasterizedPixelData->GetWidth(), rasterizedPixelData->GetHeight() );
221 texture.Upload( rasterizedPixelData, 0, 0 );
223 if( mAtlasRect == FULL_TEXTURE_RECT )
225 textureSet = currentTextureSet;
229 textureSet = TextureSet::New();
230 mImpl->mRenderer.SetTextures( textureSet );
232 mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, FULL_TEXTURE_RECT );
233 mAtlasRect = FULL_TEXTURE_RECT;
238 textureSet.SetImage( 0u, texture );
246 } // namespace Internal
248 } // namespace Toolkit