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/third-party/nanosvg/nanosvg.h>
31 #include <dali-toolkit/internal/visuals/svg/svg-rasterize-thread.h>
32 #include <dali-toolkit/internal/visuals/image/image-visual.h>
33 #include <dali-toolkit/internal/visuals/visual-factory-cache.h>
34 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
35 #include <dali-toolkit/internal/visuals/visual-base-data-impl.h>
40 const char * const UNITS("px");
42 const Dali::Vector4 FULL_TEXTURE_RECT(0.f, 0.f, 1.f, 1.f);
54 SvgVisual::SvgVisual( VisualFactoryCache& factoryCache, ImageAtlasManager& atlasManager )
55 : Visual::Base( factoryCache ),
56 mAtlasRect( FULL_TEXTURE_RECT ),
57 mAtlasManager( atlasManager ),
60 // the rasterized image is with pre-multiplied alpha format
61 mImpl->mFlags |= Impl::IS_PREMULTIPLIED_ALPHA;
64 SvgVisual::~SvgVisual()
68 nsvgDelete( mParsedImage );
72 bool SvgVisual::IsSvgUrl( const std::string& url )
74 return url.substr( url.find_last_of(".") + 1 ) == "svg";
77 void SvgVisual::DoInitialize( Actor& actor, const Property::Map& propertyMap )
79 Property::Value* imageURLValue = propertyMap.Find( IMAGE_URL_NAME );
83 if( imageURLValue->Get( imageUrl ) )
89 DALI_LOG_ERROR( "The property '%s' is not a string\n", IMAGE_URL_NAME );
94 void SvgVisual::DoSetOnStage( Actor& actor )
96 Shader shader = ImageVisual::GetImageShader( mFactoryCache );
97 Geometry geometry = mFactoryCache.GetGeometry( VisualFactoryCache::QUAD_GEOMETRY );
100 geometry = mFactoryCache.CreateQuadGeometry();
101 mFactoryCache.SaveGeometry( VisualFactoryCache::QUAD_GEOMETRY, geometry );
103 TextureSet textureSet = TextureSet::New();
104 mImpl->mRenderer = Renderer::New( geometry, shader );
105 mImpl->mRenderer.SetTextures( textureSet );
107 if( mImpl->mSize != Vector2::ZERO && mParsedImage )
109 AddRasterizationTask( mImpl->mSize );
113 void SvgVisual::DoSetOffStage( Actor& actor )
115 mFactoryCache.GetSVGRasterizationThread()->RemoveTask( this );
117 actor.RemoveRenderer( mImpl->mRenderer );
118 mImpl->mRenderer.Reset();
121 void SvgVisual::GetNaturalSize( Vector2& naturalSize ) const
125 naturalSize.x = mParsedImage->width;
126 naturalSize.y = mParsedImage->height;
130 naturalSize = Vector2::ZERO;
134 void SvgVisual::SetSize( const Vector2& size )
136 if(mImpl->mSize != size && mParsedImage && GetIsOnStage() )
138 AddRasterizationTask( size );
143 void SvgVisual::DoCreatePropertyMap( Property::Map& map ) const
146 map.Insert( RENDERER_TYPE, IMAGE_RENDERER );
147 if( !mImageUrl.empty() )
149 map.Insert( IMAGE_URL_NAME, mImageUrl );
153 void SvgVisual::SetImage( const std::string& imageUrl, ImageDimensions size )
155 if( mImageUrl != imageUrl )
157 mImageUrl = imageUrl;
159 NSVGimage* parsedImageOld = mParsedImage;
161 Vector2 dpi = Stage::GetCurrent().GetDpi();
162 float meanDpi = (dpi.height + dpi.width) * 0.5f;
163 mParsedImage = nsvgParseFromFile(mImageUrl.c_str(), UNITS, meanDpi);
165 if( size.GetWidth() != 0u && size.GetHeight() != 0u)
167 mImpl->mSize.x = size.GetWidth();
168 mImpl->mSize.y = size.GetHeight();
171 if( mImpl->mSize != Vector2::ZERO && GetIsOnStage() )
173 AddRasterizationTask( mImpl->mSize );
176 mFactoryCache.GetSVGRasterizationThread()->DeleteImage( parsedImageOld );
180 void SvgVisual::AddRasterizationTask( const Vector2& size )
182 if( mImpl->mRenderer && mParsedImage )
184 unsigned int width = static_cast<unsigned int>(size.width);
185 unsigned int height = static_cast<unsigned int>( size.height );
186 BufferImage image = BufferImage::New( width, height, Pixel::RGBA8888);
188 RasterizingTaskPtr newTask = new RasterizingTask( this, mParsedImage, width, height );
189 mFactoryCache.GetSVGRasterizationThread()->AddTask( newTask );
193 void SvgVisual::ApplyRasterizedImage( PixelData rasterizedPixelData )
197 TextureSet currentTextureSet = mImpl->mRenderer.GetTextures();
198 if( mAtlasRect != FULL_TEXTURE_RECT )
200 mAtlasManager.Remove( currentTextureSet, mAtlasRect );
204 TextureSet textureSet = mAtlasManager.Add(atlasRect, rasterizedPixelData );
205 if( textureSet ) // atlasing
207 if( textureSet != currentTextureSet )
209 mImpl->mRenderer.SetTextures( textureSet );
211 mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, atlasRect );
212 mAtlasRect = atlasRect;
216 Atlas texture = Atlas::New( rasterizedPixelData.GetWidth(), rasterizedPixelData.GetHeight() );
217 texture.Upload( rasterizedPixelData, 0, 0 );
219 if( mAtlasRect == FULL_TEXTURE_RECT )
221 textureSet = currentTextureSet;
225 textureSet = TextureSet::New();
226 mImpl->mRenderer.SetTextures( textureSet );
228 mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, FULL_TEXTURE_RECT );
229 mAtlasRect = FULL_TEXTURE_RECT;
234 TextureSetImage( textureSet, 0u, texture );
242 } // namespace Internal
244 } // namespace Toolkit