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 )
59 SvgVisual* svgVisual = new SvgVisual( factoryCache );
60 svgVisual->ParseFromUrl( imageUrl );
64 SvgVisual::SvgVisual( VisualFactoryCache& factoryCache )
65 : Visual::Base( factoryCache ),
66 mAtlasRect( FULL_TEXTURE_RECT ),
70 mVisualSize(Vector2::ZERO)
72 // the rasterized image is with pre-multiplied alpha format
73 mImpl->mFlags |= Impl::IS_PREMULTIPLIED_ALPHA;
76 SvgVisual::~SvgVisual()
80 nsvgDelete( mParsedImage );
84 void SvgVisual::DoSetProperties( const Property::Map& propertyMap )
86 // url already passed in from constructor
89 void SvgVisual::DoSetOnStage( Actor& actor )
91 Shader shader = ImageVisual::GetImageShader( mFactoryCache, true, true );
92 Geometry geometry = mFactoryCache.GetGeometry( VisualFactoryCache::QUAD_GEOMETRY );
95 geometry = mFactoryCache.CreateQuadGeometry();
96 mFactoryCache.SaveGeometry( VisualFactoryCache::QUAD_GEOMETRY, geometry );
98 TextureSet textureSet = TextureSet::New();
99 mImpl->mRenderer = Renderer::New( geometry, shader );
100 mImpl->mRenderer.SetTextures( textureSet );
102 // Register transform properties
103 mImpl->mTransform.RegisterUniforms( mImpl->mRenderer, Direction::LEFT_TO_RIGHT );
105 // Defer the rasterisation task until we get given a size (by Size Negotiation algorithm)
107 // Hold the weak handle of the placement actor and delay the adding of renderer until the svg rasterization is finished.
108 mPlacementActor = actor;
111 void SvgVisual::DoSetOffStage( Actor& actor )
113 mFactoryCache.GetSVGRasterizationThread()->RemoveTask( this );
115 actor.RemoveRenderer( mImpl->mRenderer );
116 mImpl->mRenderer.Reset();
117 mPlacementActor.Reset();
120 void SvgVisual::GetNaturalSize( Vector2& naturalSize )
124 naturalSize.x = mParsedImage->width;
125 naturalSize.y = mParsedImage->height;
129 naturalSize = Vector2::ZERO;
133 void SvgVisual::DoCreatePropertyMap( Property::Map& map ) const
136 map.Insert( Toolkit::DevelVisual::Property::TYPE, Toolkit::Visual::IMAGE );
137 if( !mImageUrl.empty() )
139 map.Insert( Toolkit::ImageVisual::Property::URL, mImageUrl );
143 void SvgVisual::ParseFromUrl( const std::string& imageUrl )
145 mImageUrl = imageUrl;
147 Vector2 dpi = Stage::GetCurrent().GetDpi();
148 float meanDpi = (dpi.height + dpi.width) * 0.5f;
149 mParsedImage = nsvgParseFromFile( imageUrl.c_str(), UNITS, meanDpi );
152 void SvgVisual::AddRasterizationTask( const Vector2& size )
154 if( mImpl->mRenderer && mParsedImage )
156 unsigned int width = static_cast<unsigned int>(size.width);
157 unsigned int height = static_cast<unsigned int>( size.height );
159 RasterizingTaskPtr newTask = new RasterizingTask( this, mParsedImage, width, height );
160 mFactoryCache.GetSVGRasterizationThread()->AddTask( newTask );
164 void SvgVisual::ApplyRasterizedImage( PixelData rasterizedPixelData )
168 TextureSet currentTextureSet = mImpl->mRenderer.GetTextures();
169 if( mAtlasRect != FULL_TEXTURE_RECT )
171 mFactoryCache.GetAtlasManager()->Remove( currentTextureSet, mAtlasRect );
175 TextureSet textureSet = mFactoryCache.GetAtlasManager()->Add(atlasRect, rasterizedPixelData );
176 if( textureSet ) // atlasing
178 if( textureSet != currentTextureSet )
180 mImpl->mRenderer.SetTextures( textureSet );
182 mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, atlasRect );
183 mAtlasRect = atlasRect;
184 mImpl->mFlags |= Impl::IS_ATLASING_APPLIED;
188 Texture texture = Texture::New( Dali::TextureType::TEXTURE_2D, Pixel::RGBA8888,
189 rasterizedPixelData.GetWidth(), rasterizedPixelData.GetHeight() );
190 texture.Upload( rasterizedPixelData );
191 mImpl->mFlags &= ~Impl::IS_ATLASING_APPLIED;
193 if( mAtlasRect == FULL_TEXTURE_RECT )
195 textureSet = currentTextureSet;
199 textureSet = TextureSet::New();
200 mImpl->mRenderer.SetTextures( textureSet );
202 mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, FULL_TEXTURE_RECT );
203 mAtlasRect = FULL_TEXTURE_RECT;
208 textureSet.SetTexture( 0, texture );
212 // Rasterized pixels are uploaded to texture. If weak handle is holding a placement actor, it is the time to add the renderer to actor.
213 Actor actor = mPlacementActor.GetHandle();
216 actor.AddRenderer( mImpl->mRenderer );
217 // reset the weak handle so that the renderer only get added to actor once
218 mPlacementActor.Reset();
223 void SvgVisual::OnSetTransform()
225 Vector2 visualSize = mImpl->mTransform.GetVisualSize( mImpl->mControlSize );
227 if( mParsedImage && IsOnStage() )
229 if( visualSize != mVisualSize )
231 AddRasterizationTask( visualSize );
232 mVisualSize = visualSize;
237 } // namespace Internal
239 } // namespace Toolkit