From 301d5a88d13f48dd5220fbcb21231ce4516f313f Mon Sep 17 00:00:00 2001 From: Xiangyin Ma Date: Mon, 22 Feb 2016 15:52:12 +0000 Subject: [PATCH] SVG support for ImageView ( CPU rendering version ) Change-Id: I220bb575d2f66deca04106b091dd15aaed34302f --- automated-tests/resources/svg1.svg | 4 + .../src/dali-toolkit/utc-Dali-ControlRenderer.cpp | 50 + .../src/dali-toolkit/utc-Dali-RendererFactory.cpp | 88 + dali-toolkit/devel-api/image-atlas/image-atlas.cpp | 5 + dali-toolkit/devel-api/image-atlas/image-atlas.h | 10 +- .../controls/image-view/image-view-impl.cpp | 41 +- .../internal/controls/image-view/image-view-impl.h | 5 + .../renderers/control-renderer-data-impl.h | 4 +- .../controls/renderers/control-renderer-impl.cpp | 16 +- .../controls/renderers/control-renderer-impl.h | 14 + .../controls/renderers/image-atlas-manager.cpp | 49 +- .../controls/renderers/image-atlas-manager.h | 21 +- .../controls/renderers/image/image-renderer.cpp | 12 - .../controls/renderers/image/image-renderer.h | 8 - .../controls/renderers/renderer-factory-cache.cpp | 21 + .../controls/renderers/renderer-factory-cache.h | 21 +- .../controls/renderers/renderer-factory-impl.cpp | 35 +- .../controls/renderers/svg/nanosvg/nanosvg.cc | 2712 ++++++++++++++++++++ .../controls/renderers/svg/nanosvg/nanosvg.h | 173 ++ .../controls/renderers/svg/nanosvg/nanosvgrast.cc | 1312 ++++++++++ .../controls/renderers/svg/nanosvg/nanosvgrast.h | 69 + .../renderers/svg/svg-rasterize-thread.cpp | 239 ++ .../controls/renderers/svg/svg-rasterize-thread.h | 216 ++ .../controls/renderers/svg/svg-renderer.cpp | 256 ++ .../internal/controls/renderers/svg/svg-renderer.h | 151 ++ dali-toolkit/internal/file.list | 4 + .../internal/image-atlas/image-atlas-impl.cpp | 20 + .../internal/image-atlas/image-atlas-impl.h | 7 +- 28 files changed, 5502 insertions(+), 61 deletions(-) create mode 100644 automated-tests/resources/svg1.svg create mode 100644 dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvg.cc create mode 100644 dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvg.h create mode 100644 dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvgrast.cc create mode 100644 dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvgrast.h create mode 100644 dali-toolkit/internal/controls/renderers/svg/svg-rasterize-thread.cpp create mode 100644 dali-toolkit/internal/controls/renderers/svg/svg-rasterize-thread.h create mode 100644 dali-toolkit/internal/controls/renderers/svg/svg-renderer.cpp create mode 100644 dali-toolkit/internal/controls/renderers/svg/svg-renderer.h diff --git a/automated-tests/resources/svg1.svg b/automated-tests/resources/svg1.svg new file mode 100644 index 0000000..4634fd8 --- /dev/null +++ b/automated-tests/resources/svg1.svg @@ -0,0 +1,4 @@ + + + + diff --git a/automated-tests/src/dali-toolkit/utc-Dali-ControlRenderer.cpp b/automated-tests/src/dali-toolkit/utc-Dali-ControlRenderer.cpp index 33ba4c8..5010576 100644 --- a/automated-tests/src/dali-toolkit/utc-Dali-ControlRenderer.cpp +++ b/automated-tests/src/dali-toolkit/utc-Dali-ControlRenderer.cpp @@ -29,6 +29,7 @@ namespace { const char* TEST_IMAGE_FILE_NAME = "gallery_image_01.jpg"; const char* TEST_NPATCH_FILE_NAME = "gallery_image_01.9.jpg"; +const char* TEST_SVG_FILE_NAME = TEST_RESOURCE_DIR "/svg1.svg"; } void dali_control_renderer_startup(void) @@ -165,6 +166,16 @@ int UtcDaliControlRendererSize(void) gradientRenderer.GetNaturalSize(naturalSize); DALI_TEST_EQUALS( naturalSize, Vector2::ZERO,TEST_LOCATION ); + //svg renderer + ControlRenderer svgRenderer = factory.GetControlRenderer( TEST_SVG_FILE_NAME ); + svgRenderer.SetSize( rendererSize ); + DALI_TEST_EQUALS( svgRenderer.GetSize(), rendererSize, TEST_LOCATION ); + svgRenderer.GetNaturalSize(naturalSize); + // TEST_SVG_FILE: + // + // + // + DALI_TEST_EQUALS( naturalSize, Vector2(100.f, 100.f), TEST_LOCATION ); END_TEST; } @@ -566,3 +577,42 @@ int UtcDaliControlRendererGetPropertyMap6(void) END_TEST; } + +int UtcDaliControlRendererGetPropertyMap7(void) +{ + ToolkitTestApplication application; + tet_infoline( "UtcDaliControlRendererGetPropertyMap7: SvgRenderer" ); + + // request SvgRenderer with a property map + RendererFactory factory = RendererFactory::Get(); + Property::Map propertyMap; + propertyMap.Insert( "rendererType", "svg" ); + propertyMap.Insert( "imageUrl", TEST_SVG_FILE_NAME ); + ControlRenderer svgRenderer = factory.GetControlRenderer( propertyMap ); + + Property::Map resultMap; + svgRenderer.CreatePropertyMap( resultMap ); + // check the property values from the returned map from control renderer + Property::Value* value = resultMap.Find( "rendererType", Property::STRING ); + DALI_TEST_CHECK( value ); + DALI_TEST_CHECK( value->Get() == "svg" ); + + value = resultMap.Find( "imageUrl", Property::STRING ); + DALI_TEST_CHECK( value ); + DALI_TEST_CHECK( value->Get() == TEST_SVG_FILE_NAME ); + + // request SvgRenderer with an URL + ControlRenderer svgRenderer2 = factory.GetControlRenderer( TEST_SVG_FILE_NAME ); + resultMap.Clear(); + svgRenderer2.CreatePropertyMap( resultMap ); + // check the property values from the returned map from control renderer + value = resultMap.Find( "rendererType", Property::STRING ); + DALI_TEST_CHECK( value ); + DALI_TEST_CHECK( value->Get() == "svg" ); + + value = resultMap.Find( "imageUrl", Property::STRING ); + DALI_TEST_CHECK( value ); + DALI_TEST_CHECK( value->Get() == TEST_SVG_FILE_NAME ); + + END_TEST; +} diff --git a/automated-tests/src/dali-toolkit/utc-Dali-RendererFactory.cpp b/automated-tests/src/dali-toolkit/utc-Dali-RendererFactory.cpp index dd7012d..98cf674 100644 --- a/automated-tests/src/dali-toolkit/utc-Dali-RendererFactory.cpp +++ b/automated-tests/src/dali-toolkit/utc-Dali-RendererFactory.cpp @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -32,6 +33,8 @@ typedef NinePatchImage::StretchRanges StretchRanges; const char* TEST_IMAGE_FILE_NAME = "gallery_image_01.jpg"; const char* TEST_NPATCH_FILE_NAME = "gallery_image_01.9.jpg"; +const char* TEST_SVG_FILE_NAME = TEST_RESOURCE_DIR "/svg1.svg"; + Integration::Bitmap* CreateBitmap( unsigned int imageWidth, unsigned int imageHeight, unsigned int initialColor, Pixel::Format pixelFormat ) { Integration::Bitmap* bitmap = Integration::Bitmap::New( Integration::Bitmap::BITMAP_2D_PACKED_PIXELS, ResourcePolicy::OWNED_RETAIN ); @@ -839,6 +842,48 @@ int UtcDaliRendererFactoryGetNPatchRendererN2(void) END_TEST; } +int UtcDaliRendererFactoryGetSvgRenderer(void) +{ + ToolkitTestApplication application; + tet_infoline( "UtcDaliRendererFactoryGetSvgRenderer: Request svg renderer with a svg url" ); + + RendererFactory factory = RendererFactory::Get(); + ControlRenderer controlRenderer = factory.GetControlRenderer( TEST_SVG_FILE_NAME ); + DALI_TEST_CHECK( controlRenderer ); + + Actor actor = Actor::New(); + actor.SetSize( 200.f, 200.f ); + Stage::GetCurrent().Add( actor ); + controlRenderer.SetSize( Vector2(200.f, 200.f) ); + controlRenderer.SetOnStage( actor ); + application.SendNotification(); + application.Render(); + + DALI_TEST_CHECK( actor.GetRendererCount() == 1u ); + // texture is not added until the rasterization completed. + DALI_TEST_CHECK( actor.GetRendererAt(0u).GetMaterial().GetNumberOfTextures() == 0 ); + + EventThreadCallback* eventTrigger = EventThreadCallback::Get(); + CallbackBase* callback = eventTrigger->GetCallback(); + + eventTrigger->WaitingForTrigger( 1 );// waiting until the svg image is rasterized. + CallbackBase::Execute( *callback ); + + DALI_TEST_CHECK( actor.GetRendererCount() == 1u ); + DALI_TEST_CHECK( actor.GetRendererAt(0u).GetMaterial().GetNumberOfTextures() == 1 ); + + // waiting for the resource uploading + application.SendNotification(); + application.Render(); + + TestGlAbstraction& gl = application.GetGlAbstraction(); + int textureUnit = -1; + DALI_TEST_CHECK( gl.GetUniformValue< int >( "sTexture", textureUnit ) ); + DALI_TEST_EQUALS( textureUnit, 0, TEST_LOCATION ); + + END_TEST; +} + int UtcDaliRendererFactoryResetRenderer1(void) { ToolkitTestApplication application; @@ -920,3 +965,46 @@ int UtcDaliRendererFactoryResetRenderer2(void) END_TEST; } + +int UtcDaliRendererFactoryResetRenderer3(void) +{ + ToolkitTestApplication application; + tet_infoline( "UtcDaliRendererFactoryResetRenderer3" ); + + Actor actor = Actor::New(); + actor.SetSize(200.f, 200.f); + Stage::GetCurrent().Add( actor ); + RendererFactory factory = RendererFactory::Get(); + DALI_TEST_CHECK( factory ); + + // Get renderer for rendering a resource image + Image resourceImage = ResourceImage::New(TEST_IMAGE_FILE_NAME); + ControlRenderer controlRenderer = factory.GetControlRenderer( resourceImage ); + DALI_TEST_CHECK( controlRenderer ); + controlRenderer.SetSize(Vector2(200.f, 200.f)); + controlRenderer.SetOnStage( actor ); + application.SendNotification(); + application.Render(); + + DALI_TEST_CHECK( actor.GetRendererCount() == 1u ); + DALI_TEST_CHECK( actor.GetRendererAt(0u).GetMaterial().GetNumberOfTextures() == 1 ); + + // reset the renderer to renderer a svg image + factory.ResetRenderer( controlRenderer, actor, TEST_SVG_FILE_NAME, ImageDimensions( 100, 100 ) ); + application.SendNotification(); + application.Render(); + + DALI_TEST_CHECK( actor.GetRendererCount() == 1u ); + // texture is not added until the rasterization completed. + DALI_TEST_CHECK( actor.GetRendererAt(0u).GetMaterial().GetNumberOfTextures() == 0 ); + + EventThreadCallback* eventTrigger = EventThreadCallback::Get(); + CallbackBase* callback = eventTrigger->GetCallback(); + + eventTrigger->WaitingForTrigger( 1 );// waiting until the svg image is rasterized. + CallbackBase::Execute( *callback ); + + DALI_TEST_CHECK( actor.GetRendererAt(0u).GetMaterial().GetNumberOfTextures() == 1 ); + + END_TEST; +} diff --git a/dali-toolkit/devel-api/image-atlas/image-atlas.cpp b/dali-toolkit/devel-api/image-atlas/image-atlas.cpp index 3aa9fd2..71b67ea 100644 --- a/dali-toolkit/devel-api/image-atlas/image-atlas.cpp +++ b/dali-toolkit/devel-api/image-atlas/image-atlas.cpp @@ -77,6 +77,11 @@ bool ImageAtlas::Upload( Vector4& textureRect, return GetImplementation(*this).Upload( textureRect, url, size, fittingMode, orientationCorrection ); } +bool ImageAtlas::Upload( Vector4& textureRect, PixelDataPtr pixelData ) +{ + return GetImplementation(*this).Upload( textureRect, pixelData ); +} + void ImageAtlas::Remove(const Vector4& textureRect) { GetImplementation(*this).Remove( textureRect ); diff --git a/dali-toolkit/devel-api/image-atlas/image-atlas.h b/dali-toolkit/devel-api/image-atlas/image-atlas.h index cef3eb7..315584a 100644 --- a/dali-toolkit/devel-api/image-atlas/image-atlas.h +++ b/dali-toolkit/devel-api/image-atlas/image-atlas.h @@ -24,13 +24,13 @@ #include #include #include +#include namespace Dali { namespace Toolkit { - namespace Internal DALI_INTERNAL { class ImageAtlas; @@ -128,6 +128,14 @@ public: bool orientationCorrection = true ); /** + * @brief Upload a pixel buffer to atlas + * + * @param [out] textureRect The texture area of the resource image in the atlas. + * @param [in] pixelData The pixel data. + */ + bool Upload( Vector4& textureRect, PixelDataPtr pixelData ); + + /** * @brief Remove the image at the given rectangle. * * The rectangular area is marked unoccupied, so new image can be added to this area. diff --git a/dali-toolkit/internal/controls/image-view/image-view-impl.cpp b/dali-toolkit/internal/controls/image-view/image-view-impl.cpp index aecb859..f7c36a7 100644 --- a/dali-toolkit/internal/controls/image-view/image-view-impl.cpp +++ b/dali-toolkit/internal/controls/image-view/image-view-impl.cpp @@ -12,7 +12,6 @@ // INTERNAL INCLUDES #include #include -#include namespace Dali { @@ -131,17 +130,13 @@ void ImageView::SetImage( const std::string& url, ImageDimensions size ) mUrl = url; - if( size.GetWidth() == 0u && size.GetHeight() == 0u ) - { - mImageSize = ResourceImage::GetImageSize( mUrl ); - } - else + if( size.GetWidth() != 0u && size.GetHeight() != 0u ) { mImageSize = size; } Actor self = Self(); - Toolkit::RendererFactory::Get().ResetRenderer( mRenderer, self, mUrl, mImageSize ); + Toolkit::RendererFactory::Get().ResetRenderer( mRenderer, self, mUrl, size ); RelayoutRequest(); } @@ -149,22 +144,19 @@ void ImageView::SetImage( const std::string& url, ImageDimensions size ) void ImageView::EnablePreMultipliedAlpha( bool preMultipled ) { - mPremultipledAlphaEnabled = preMultipled; - if( mRenderer ) { - ControlRenderer& rendererImpl = GetImplementation( mRenderer ); - if (&typeid( rendererImpl ) == &typeid(ImageRenderer) ) - { - ImageRenderer* imageRenderer = static_cast( &rendererImpl ); - imageRenderer->EnablePreMultipliedAlpha( preMultipled ); - } + GetImplementation( mRenderer ).EnablePreMultipliedAlpha( preMultipled ); } } bool ImageView::IsPreMultipliedAlphaEnabled() const { - return mPremultipledAlphaEnabled; + if( mRenderer ) + { + return GetImplementation( mRenderer ).IsPreMultipliedAlphaEnabled(); + } + return false; } void ImageView::SetDepthIndex( int depthIndex ) @@ -177,8 +169,14 @@ void ImageView::SetDepthIndex( int depthIndex ) Vector3 ImageView::GetNaturalSize() { - Vector3 size; + if( mRenderer ) + { + Vector2 rendererNaturalSize; + mRenderer.GetNaturalSize( rendererNaturalSize ); + return Vector3( rendererNaturalSize ); + } + Vector3 size; size.x = mImageSize.GetWidth(); size.y = mImageSize.GetHeight(); @@ -246,6 +244,15 @@ void ImageView::OnStageDisconnection() Control::OnStageDisconnection(); } +void ImageView::OnSizeSet( const Vector3& targetSize ) +{ + if( mRenderer ) + { + Vector2 size( targetSize ); + mRenderer.SetSize( size ); + } +} + /////////////////////////////////////////////////////////// // // Properties diff --git a/dali-toolkit/internal/controls/image-view/image-view-impl.h b/dali-toolkit/internal/controls/image-view/image-view-impl.h index 2b31bf9..b517994 100644 --- a/dali-toolkit/internal/controls/image-view/image-view-impl.h +++ b/dali-toolkit/internal/controls/image-view/image-view-impl.h @@ -128,6 +128,11 @@ private: // From Control virtual void OnStageDisconnection(); /** + * @copydoc Toolkit::Control::OnSizeSet() + */ + virtual void OnSizeSet( const Vector3& targetSize ); + + /** * @copydoc Toolkit::Control::GetNaturalSize */ virtual Vector3 GetNaturalSize(); diff --git a/dali-toolkit/internal/controls/renderers/control-renderer-data-impl.h b/dali-toolkit/internal/controls/renderers/control-renderer-data-impl.h index 3a5ccbb..2428715 100644 --- a/dali-toolkit/internal/controls/renderers/control-renderer-data-impl.h +++ b/dali-toolkit/internal/controls/renderers/control-renderer-data-impl.h @@ -38,7 +38,8 @@ struct Internal::ControlRenderer::Impl enum Flags { IS_ON_STAGE = 1, - IS_FROM_CACHE = 1 << 1 + IS_FROM_CACHE = 1 << 1, + IS_PREMULTIPLIED_ALPHA = 1 << 2 }; struct CustomShader @@ -59,7 +60,6 @@ struct Internal::ControlRenderer::Impl Vector2 mSize; Vector2 mOffset; - Rect mClipRect; float mDepthIndex; int mFlags; diff --git a/dali-toolkit/internal/controls/renderers/control-renderer-impl.cpp b/dali-toolkit/internal/controls/renderers/control-renderer-impl.cpp index 307818f..42d9634 100644 --- a/dali-toolkit/internal/controls/renderers/control-renderer-impl.cpp +++ b/dali-toolkit/internal/controls/renderers/control-renderer-impl.cpp @@ -94,7 +94,6 @@ void ControlRenderer::GetNaturalSize( Vector2& naturalSize ) const void ControlRenderer::SetClipRect( const Rect& clipRect ) { - mImpl->mClipRect = clipRect; } void ControlRenderer::SetOffset( const Vector2& offset ) @@ -120,6 +119,7 @@ void ControlRenderer::SetOnStage( Actor& actor ) { DoSetOnStage( actor ); + mImpl->mRenderer.SetProperty(Renderer::Property::BLEND_PRE_MULTIPLIED_ALPHA, IsPreMultipliedAlphaEnabled()); mImpl->mRenderer.SetProperty( Renderer::Property::DEPTH_INDEX, mImpl->mDepthIndex ); actor.AddRenderer( mImpl->mRenderer ); mImpl->mFlags |= Impl::IS_ON_STAGE; @@ -135,6 +135,20 @@ void ControlRenderer::SetOffStage( Actor& actor ) } } +void ControlRenderer::EnablePreMultipliedAlpha( bool preMultipled ) +{ + mImpl->mFlags |= Impl::IS_PREMULTIPLIED_ALPHA; + if( mImpl->mRenderer ) + { + mImpl->mRenderer.SetProperty(Renderer::Property::BLEND_PRE_MULTIPLIED_ALPHA, preMultipled); + } +} + +bool ControlRenderer::IsPreMultipliedAlphaEnabled() const +{ + return mImpl->mFlags & Impl::IS_PREMULTIPLIED_ALPHA; +} + void ControlRenderer::DoSetOnStage( Actor& actor ) { } diff --git a/dali-toolkit/internal/controls/renderers/control-renderer-impl.h b/dali-toolkit/internal/controls/renderers/control-renderer-impl.h index 5e19bc2..70ffb35 100644 --- a/dali-toolkit/internal/controls/renderers/control-renderer-impl.h +++ b/dali-toolkit/internal/controls/renderers/control-renderer-impl.h @@ -132,6 +132,20 @@ public: */ void CreatePropertyMap( Property::Map& map ) const; + /** + * @brief Set whether the Pre-multiplied Alpha Blending is required + * + * @param[in] preMultipled whether alpha is pre-multiplied. + */ + void EnablePreMultipliedAlpha( bool preMultipled ); + + /** + * @brief Query whether alpha is pre-multiplied. + * + * @return True is alpha is pre-multiplied, false otherwise. + */ + bool IsPreMultipliedAlphaEnabled() const; + protected: /** diff --git a/dali-toolkit/internal/controls/renderers/image-atlas-manager.cpp b/dali-toolkit/internal/controls/renderers/image-atlas-manager.cpp index 4541ae3..7f6f4f6 100644 --- a/dali-toolkit/internal/controls/renderers/image-atlas-manager.cpp +++ b/dali-toolkit/internal/controls/renderers/image-atlas-manager.cpp @@ -79,19 +79,37 @@ Material ImageAtlasManager::Add( Vector4& textureRect, i++; } - Toolkit::ImageAtlas newAtlas = Toolkit::ImageAtlas::New( DEFAULT_ATLAS_SIZE, DEFAULT_ATLAS_SIZE ); - if( !mBrokenImageUrl.empty() ) + CreateNewAtlas(); + mAtlasList.back().Upload( textureRect, url, size, fittingMode, orientationCorrection ); + return mMaterialList.back(); +} + +Material ImageAtlasManager::Add( Vector4& textureRect, + PixelDataPtr pixelData ) +{ + + // big buffer, atlasing is not applied + if( static_cast(pixelData->GetWidth()) * static_cast(pixelData->GetHeight()) > MAX_ITEM_AREA + || pixelData->GetWidth()>DEFAULT_ATLAS_SIZE + || pixelData->GetHeight()>DEFAULT_ATLAS_SIZE ) { - newAtlas.SetBrokenImage( mBrokenImageUrl ); + return Material(); + } + + unsigned int i = 0; + for( AtlasContainer::iterator iter = mAtlasList.begin(); iter != mAtlasList.end(); ++iter) + { + if( (*iter).Upload( textureRect, pixelData ) ) + { + return mMaterialList[i]; + } + i++; } - mAtlasList.push_back( newAtlas ); - Material newMaterial = Material::New( mShader ); - newMaterial.AddTexture( newAtlas.GetAtlas(), mTextureUniformName ); - mMaterialList.push_back( newMaterial ); - newAtlas.Upload( textureRect, url, size, fittingMode, orientationCorrection ); + CreateNewAtlas(); + mAtlasList.back().Upload( textureRect, pixelData ); + return mMaterialList.back(); - return newMaterial; } void ImageAtlasManager::Remove( Material material, const Vector4& textureRect ) @@ -116,6 +134,19 @@ void ImageAtlasManager::SetBrokenImage( const std::string& brokenImageUrl ) } } +void ImageAtlasManager::CreateNewAtlas() +{ + Toolkit::ImageAtlas newAtlas = Toolkit::ImageAtlas::New( DEFAULT_ATLAS_SIZE, DEFAULT_ATLAS_SIZE ); + if( !mBrokenImageUrl.empty() ) + { + newAtlas.SetBrokenImage( mBrokenImageUrl ); + } + mAtlasList.push_back( newAtlas ); + Material newMaterial = Material::New( mShader ); + newMaterial.AddTexture( newAtlas.GetAtlas(), mTextureUniformName ); + mMaterialList.push_back( newMaterial ); +} + } // namespace Internal } // namespace Toolkit diff --git a/dali-toolkit/internal/controls/renderers/image-atlas-manager.h b/dali-toolkit/internal/controls/renderers/image-atlas-manager.h index b0729dd..8b562a9 100644 --- a/dali-toolkit/internal/controls/renderers/image-atlas-manager.h +++ b/dali-toolkit/internal/controls/renderers/image-atlas-manager.h @@ -67,7 +67,7 @@ public: * @param [in] size The width and height to fit the loaded image to. * @param [in] fittingMode The method used to fit the shape of the image before loading to the shape defined by the size parameter. * @param [in] orientationCorrection Reorient the image to respect any orientation metadata in its header. - * @return True if there is enough space to fit this image in,false otherwise. + * @return The material containing the image. */ Material Add( Vector4& textureRect, const std::string& url, @@ -76,6 +76,16 @@ public: bool orientationCorrection = true ); /** + * @brief Add a pixel buffer to the atlas + * + * @param [out] textureRect The texture area of the resource image in the atlas. + * @param [in] pixelData The pixel data. + * @return The material containing the image. + */ + Material Add( Vector4& textureRect, + PixelDataPtr pixelData ); + + /** * Remove the image at the given rectangle from the material. * * @param [in] material The material containing the atlas image. @@ -90,6 +100,15 @@ public: */ void SetBrokenImage( const std::string& brokenImageUrl ); +private: + + /** + * @brief Create a new atlas. + * + * This method is called when the newly added image or pixel buffer cannot fit into the current atlas list. + */ + void CreateNewAtlas(); + protected: /** diff --git a/dali-toolkit/internal/controls/renderers/image/image-renderer.cpp b/dali-toolkit/internal/controls/renderers/image/image-renderer.cpp index 10a6bc6..b8c6343 100644 --- a/dali-toolkit/internal/controls/renderers/image/image-renderer.cpp +++ b/dali-toolkit/internal/controls/renderers/image/image-renderer.cpp @@ -207,7 +207,6 @@ ImageRenderer::ImageRenderer( RendererFactoryCache& factoryCache, ImageAtlasMana mDesiredSize(), mFittingMode( FittingMode::DEFAULT ), mSamplingMode( SamplingMode::DEFAULT ), - mIsAlphaPreMultiplied( false ), mNativeFragmentShaderCode( ), mNativeImageFlag( false ) { @@ -546,7 +545,6 @@ void ImageRenderer::DoSetOnStage( Actor& actor ) InitializeRenderer( mImage ); } - mImpl->mRenderer.SetProperty(Renderer::Property::BLEND_PRE_MULTIPLIED_ALPHA, mIsAlphaPreMultiplied); } void ImageRenderer::DoSetOffStage( Actor& actor ) @@ -556,7 +554,6 @@ void ImageRenderer::DoSetOffStage( Actor& actor ) { actor.RemoveRenderer( mImpl->mRenderer ); CleanCache(mImageUrl); - mImage.Reset(); } else @@ -796,15 +793,6 @@ void ImageRenderer::SetImage( Actor& actor, const Image& image ) } } -void ImageRenderer::EnablePreMultipliedAlpha( bool preMultipled ) -{ - mIsAlphaPreMultiplied = preMultipled; - if( mImpl->mRenderer ) - { - mImpl->mRenderer.SetProperty(Renderer::Property::BLEND_PRE_MULTIPLIED_ALPHA, mIsAlphaPreMultiplied); - } -} - void ImageRenderer::ApplyImageToSampler( const Image& image ) { if( image ) diff --git a/dali-toolkit/internal/controls/renderers/image/image-renderer.h b/dali-toolkit/internal/controls/renderers/image/image-renderer.h index b208b44..a942f9a 100644 --- a/dali-toolkit/internal/controls/renderers/image/image-renderer.h +++ b/dali-toolkit/internal/controls/renderers/image/image-renderer.h @@ -164,13 +164,6 @@ public: */ void SetImage( Actor& actor, const Image& image ); - /** - * @brief Set whether the Pre-multiplied Alpha Blending is required - * - * @param[in] preMultipled whether alpha is pre-multiplied. - */ - void EnablePreMultipliedAlpha( bool preMultipled ); - private: /** @@ -238,7 +231,6 @@ private: Dali::ImageDimensions mDesiredSize; Dali::FittingMode::Type mFittingMode; Dali::SamplingMode::Type mSamplingMode; - bool mIsAlphaPreMultiplied; std::string mNativeFragmentShaderCode; bool mNativeImageFlag; diff --git a/dali-toolkit/internal/controls/renderers/renderer-factory-cache.cpp b/dali-toolkit/internal/controls/renderers/renderer-factory-cache.cpp index 0c1b3e1..ecfc6b5 100644 --- a/dali-toolkit/internal/controls/renderers/renderer-factory-cache.cpp +++ b/dali-toolkit/internal/controls/renderers/renderer-factory-cache.cpp @@ -22,6 +22,7 @@ // INTERNAL HEADER #include +#include namespace Dali { @@ -33,11 +34,13 @@ namespace Internal { RendererFactoryCache::RendererFactoryCache() +: mSvgRasterizeThread( NULL ) { } RendererFactoryCache::~RendererFactoryCache() { + SvgRasterizeThread::TerminateThread( mSvgRasterizeThread ); } Geometry RendererFactoryCache::GetGeometry( GeometryType type ) @@ -176,6 +179,24 @@ Geometry RendererFactoryCache::CreateQuadGeometry() return geometry; } +SvgRasterizeThread* RendererFactoryCache::GetSVGRasterizationThread() +{ + if( !mSvgRasterizeThread ) + { + mSvgRasterizeThread = new SvgRasterizeThread( new EventThreadCallback( MakeCallback( this, &RendererFactoryCache::ApplyRasterizedSVGToSampler ) ) ); + mSvgRasterizeThread->Start(); + } + return mSvgRasterizeThread; +} + +void RendererFactoryCache::ApplyRasterizedSVGToSampler() +{ + while( RasterizingTaskPtr task = mSvgRasterizeThread->NextCompletedTask() ) + { + task->GetSvgRenderer()->ApplyRasterizedImage( task->GetPixelData() ); + } +} + } // namespace Internal } // namespace Toolkit diff --git a/dali-toolkit/internal/controls/renderers/renderer-factory-cache.h b/dali-toolkit/internal/controls/renderers/renderer-factory-cache.h index 2dbcd7a..89334c5 100644 --- a/dali-toolkit/internal/controls/renderers/renderer-factory-cache.h +++ b/dali-toolkit/internal/controls/renderers/renderer-factory-cache.h @@ -17,7 +17,8 @@ * limitations under the License. */ -#include +// INTERNAL INCLUDES +#include "svg/svg-rasterize-thread.h" // EXTERNAL INCLUDES #include @@ -152,6 +153,19 @@ public: */ Renderer GetDebugRenderer(); + /** + * Get the SVG rasterization thread. + * @return A pointer pointing to the SVG rasterization thread. + */ + SvgRasterizeThread* GetSVGRasterizationThread(); + +private: // for svg rasterization thread + + /** + * Applies the rasterized image to material + */ + void ApplyRasterizedSVGToSampler(); + protected: /** @@ -192,9 +206,6 @@ private: int FindRenderer( const std::string& key ) const; private: - // ToDo: test whether using the WeakHandle could improve the performance - // With WeakHandle, the resource would be released automatically when no control is using it - Geometry mGeometry[GEOMETRY_TYPE_MAX+1]; Shader mShader[SHADER_TYPE_MAX+1]; @@ -202,6 +213,8 @@ private: CachedRenderers mRenderers; Renderer mDebugRenderer; + + SvgRasterizeThread* mSvgRasterizeThread; }; } // namespace Internal diff --git a/dali-toolkit/internal/controls/renderers/renderer-factory-impl.cpp b/dali-toolkit/internal/controls/renderers/renderer-factory-impl.cpp index cae5a20..acb09bf 100644 --- a/dali-toolkit/internal/controls/renderers/renderer-factory-impl.cpp +++ b/dali-toolkit/internal/controls/renderers/renderer-factory-impl.cpp @@ -31,6 +31,7 @@ #include #include #include +#include #include #include @@ -43,10 +44,12 @@ const char * const BORDER_RENDERER("border"); const char * const GRADIENT_RENDERER("gradient"); const char * const IMAGE_RENDERER("image"); const char * const N_PATCH_RENDERER("nPatch"); +const char * const SVG_RENDERER("svg"); const std::string TEXTURE_UNIFORM_NAME = "sTexture"; const char * const BROKEN_RENDERER_IMAGE_URL( DALI_IMAGE_DIR "broken.png"); + } namespace Dali @@ -121,6 +124,11 @@ Toolkit::ControlRenderer RendererFactory::GetControlRenderer( const Property::Ma { rendererPtr = new BorderRenderer( *( mFactoryCache.Get() ) ); } + else if( typeValue == SVG_RENDERER ) + { + CreateAtlasManager(); + rendererPtr = new SvgRenderer( *( mFactoryCache.Get() ), *( mAtlasManager.Get() ) ); + } } if( rendererPtr ) @@ -297,6 +305,13 @@ Toolkit::ControlRenderer RendererFactory::GetControlRenderer( const std::string& return Toolkit::ControlRenderer( rendererPtr ); } + else if( SvgRenderer::IsSvgUrl( url ) ) + { + CreateAtlasManager(); + SvgRenderer* rendererPtr = new SvgRenderer( *( mFactoryCache.Get() ), *( mAtlasManager.Get() ) ); + rendererPtr->SetImage( url, size ); + return Toolkit::ControlRenderer( rendererPtr ); + } else { CreateAtlasManager(); @@ -332,6 +347,15 @@ void RendererFactory::ResetRenderer( Toolkit::ControlRenderer& renderer, Actor& return; } } + else if( SvgRenderer::IsSvgUrl( url ) ) + { + SvgRenderer* rendererPtr = dynamic_cast< SvgRenderer* >( &GetImplementation( renderer ) ); + if( rendererPtr ) + { + rendererPtr->SetImage( url, size ); + return; + } + } else { ImageRenderer* rendererPtr = dynamic_cast< ImageRenderer* >( &GetImplementation( renderer ) ); @@ -368,11 +392,12 @@ void RendererFactory::ResetRenderer( Toolkit::ControlRenderer& renderer, Actor& //If there's no renderer type specified or if there hasn't been a renderer type change then we can reuse the renderer if( !type || !type->Get( typeValue ) || - ( typeValue == IMAGE_RENDERER && typeid( controlRenderer ) == typeid( ImageRenderer ) ) || - ( typeValue == N_PATCH_RENDERER && typeid( controlRenderer ) == typeid( NPatchRenderer ) ) || - ( typeValue == COLOR_RENDERER && typeid( controlRenderer ) == typeid( ColorRenderer ) )|| - ( typeValue == GRADIENT_RENDERER && typeid( controlRenderer ) == typeid( GradientRenderer ) ) || - ( typeValue == BORDER_RENDERER && typeid( controlRenderer ) == typeid( BorderRenderer ) ) ) + ( typeValue == IMAGE_RENDERER && typeid( controlRenderer ) == typeid( ImageRenderer ) ) || + ( typeValue == N_PATCH_RENDERER && typeid( controlRenderer ) == typeid( NPatchRenderer ) ) || + ( typeValue == COLOR_RENDERER && typeid( controlRenderer ) == typeid( ColorRenderer ) )|| + ( typeValue == GRADIENT_RENDERER && typeid( controlRenderer ) == typeid( GradientRenderer ) ) || + ( typeValue == BORDER_RENDERER && typeid( controlRenderer ) == typeid( BorderRenderer ) ) || + ( typeValue == SVG_RENDERER && typeid( controlRenderer ) == typeid( SvgRenderer ) ) ) { controlRenderer.Initialize( actor, propertyMap ); return; diff --git a/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvg.cc b/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvg.cc new file mode 100644 index 0000000..820e619 --- /dev/null +++ b/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvg.cc @@ -0,0 +1,2712 @@ +/* + * Copyright (c) 2013-14 Mikko Mononen memon@inside.org + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + * + * The SVG parser is based on Anti-Grain Geometry 2.4 SVG example + * Copyright (C) 2002-2004 Maxim Shemanarev (McSeem) (http://www.antigrain.com/) + * + * Arc calculation code based on canvg (https://code.google.com/p/canvg/) + * + * Bounding box calculation based on http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html + * + */ + +#include "nanosvg.h" + +/** + * In the original software, The nanosvg implementation was included in the header file. + * We have separated the implementation to source file here. + */ + +#include +#include +#include +#include + +#define NSVG_PI (3.14159265358979323846264338327f) +#define NSVG_KAPPA90 (0.5522847493f) // Lenght proportional to radius of a cubic bezier handle for 90deg arcs. + +#define NSVG_ALIGN_MIN 0 +#define NSVG_ALIGN_MID 1 +#define NSVG_ALIGN_MAX 2 +#define NSVG_ALIGN_NONE 0 +#define NSVG_ALIGN_MEET 1 +#define NSVG_ALIGN_SLICE 2 + +#define NSVG_NOTUSED(v) do { (void)(1 ? (void)0 : ( (void)(v) ) ); } while(0) +#define NSVG_RGB(r, g, b) (((unsigned int)r) | ((unsigned int)g << 8) | ((unsigned int)b << 16)) + +#define NSVG_INLINE inline + + +static int nsvg__isspace(char c) +{ + return strchr(" \t\n\v\f\r", c) != 0; +} + +static int nsvg__isdigit(char c) +{ + return strchr("0123456789", c) != 0; +} + +static int nsvg__isnum(char c) +{ + return strchr("0123456789+-.eE", c) != 0; +} + +static NSVG_INLINE float nsvg__minf(float a, float b) { return a < b ? a : b; } +static NSVG_INLINE float nsvg__maxf(float a, float b) { return a > b ? a : b; } + + +// Simple XML parser + +#define NSVG_XML_TAG 1 +#define NSVG_XML_CONTENT 2 +#define NSVG_XML_MAX_ATTRIBS 256 + +static void nsvg__parseContent(char* s, + void (*contentCb)(void* ud, const char* s), + void* ud) +{ + // Trim start white spaces + while (*s && nsvg__isspace(*s)) s++; + if (!*s) return; + + if (contentCb) + (*contentCb)(ud, s); +} + +static void nsvg__parseElement(char* s, + void (*startelCb)(void* ud, const char* el, const char** attr), + void (*endelCb)(void* ud, const char* el), + void* ud) +{ + const char* attr[NSVG_XML_MAX_ATTRIBS]; + int nattr = 0; + char* name; + int start = 0; + int end = 0; + char quote; + + // Skip white space after the '<' + while (*s && nsvg__isspace(*s)) s++; + + // Check if the tag is end tag + if (*s == '/') { + s++; + end = 1; + } else { + start = 1; + } + + // Skip comments, data and preprocessor stuff. + if (!*s || *s == '?' || *s == '!') + return; + + // Get tag name + name = s; + while (*s && !nsvg__isspace(*s)) s++; + if (*s) { *s++ = '\0'; } + + // Get attribs + while (!end && *s && nattr < NSVG_XML_MAX_ATTRIBS-3) { + // Skip white space before the attrib name + while (*s && nsvg__isspace(*s)) s++; + if (!*s) break; + if (*s == '/') { + end = 1; + break; + } + attr[nattr++] = s; + // Find end of the attrib name. + while (*s && !nsvg__isspace(*s) && *s != '=') s++; + if (*s) { *s++ = '\0'; } + // Skip until the beginning of the value. + while (*s && *s != '\"' && *s != '\'') s++; + if (!*s) break; + quote = *s; + s++; + // Store value and find the end of it. + attr[nattr++] = s; + while (*s && *s != quote) s++; + if (*s) { *s++ = '\0'; } + } + + // List terminator + attr[nattr++] = 0; + attr[nattr++] = 0; + + // Call callbacks. + if (start && startelCb) + (*startelCb)(ud, name, attr); + if (end && endelCb) + (*endelCb)(ud, name); +} + +int nsvg__parseXML(char* input, + void (*startelCb)(void* ud, const char* el, const char** attr), + void (*endelCb)(void* ud, const char* el), + void (*contentCb)(void* ud, const char* s), + void* ud) +{ + char* s = input; + char* mark = s; + int state = NSVG_XML_CONTENT; + while (*s) { + if (*s == '<' && state == NSVG_XML_CONTENT) { + // Start of a tag + *s++ = '\0'; + nsvg__parseContent(mark, contentCb, ud); + mark = s; + state = NSVG_XML_TAG; + } else if (*s == '>' && state == NSVG_XML_TAG) { + // Start of a content or new tag. + *s++ = '\0'; + nsvg__parseElement(mark, startelCb, endelCb, ud); + mark = s; + state = NSVG_XML_CONTENT; + } else { + s++; + } + } + + return 1; +} + + +/* Simple SVG parser. */ + +#define NSVG_MAX_ATTR 128 + +enum NSVGgradientUnits { + NSVG_USER_SPACE = 0, + NSVG_OBJECT_SPACE = 1, +}; + +#define NSVG_MAX_DASHES 8 + +enum NSVGunits { + NSVG_UNITS_USER, + NSVG_UNITS_PX, + NSVG_UNITS_PT, + NSVG_UNITS_PC, + NSVG_UNITS_MM, + NSVG_UNITS_CM, + NSVG_UNITS_IN, + NSVG_UNITS_PERCENT, + NSVG_UNITS_EM, + NSVG_UNITS_EX, +}; + +typedef struct NSVGcoordinate { + float value; + int units; +} NSVGcoordinate; + +typedef struct NSVGlinearData { + NSVGcoordinate x1, y1, x2, y2; +} NSVGlinearData; + +typedef struct NSVGradialData { + NSVGcoordinate cx, cy, r, fx, fy; +} NSVGradialData; + +typedef struct NSVGgradientData +{ + char id[64]; + char ref[64]; + char type; + union { + NSVGlinearData linear; + NSVGradialData radial; + }; + char spread; + char units; + float xform[6]; + int nstops; + NSVGgradientStop* stops; + struct NSVGgradientData* next; +} NSVGgradientData; + +typedef struct NSVGattrib +{ + char id[64]; + float xform[6]; + unsigned int fillColor; + unsigned int strokeColor; + float opacity; + float fillOpacity; + float strokeOpacity; + char fillGradient[64]; + char strokeGradient[64]; + float strokeWidth; + float strokeDashOffset; + float strokeDashArray[NSVG_MAX_DASHES]; + int strokeDashCount; + char strokeLineJoin; + char strokeLineCap; + char fillRule; + float fontSize; + unsigned int stopColor; + float stopOpacity; + float stopOffset; + char hasFill; + char hasStroke; + char visible; +} NSVGattrib; + +typedef struct NSVGparser +{ + NSVGattrib attr[NSVG_MAX_ATTR]; + int attrHead; + float* pts; + int npts; + int cpts; + NSVGpath* plist; + NSVGimage* image; + NSVGgradientData* gradients; + float viewMinx, viewMiny, viewWidth, viewHeight; + int alignX, alignY, alignType; + float dpi; + char pathFlag; + char defsFlag; +} NSVGparser; + +static void nsvg__xformIdentity(float* t) +{ + t[0] = 1.0f; t[1] = 0.0f; + t[2] = 0.0f; t[3] = 1.0f; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformSetTranslation(float* t, float tx, float ty) +{ + t[0] = 1.0f; t[1] = 0.0f; + t[2] = 0.0f; t[3] = 1.0f; + t[4] = tx; t[5] = ty; +} + +static void nsvg__xformSetScale(float* t, float sx, float sy) +{ + t[0] = sx; t[1] = 0.0f; + t[2] = 0.0f; t[3] = sy; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformSetSkewX(float* t, float a) +{ + t[0] = 1.0f; t[1] = 0.0f; + t[2] = tanf(a); t[3] = 1.0f; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformSetSkewY(float* t, float a) +{ + t[0] = 1.0f; t[1] = tanf(a); + t[2] = 0.0f; t[3] = 1.0f; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformSetRotation(float* t, float a) +{ + float cs = cosf(a), sn = sinf(a); + t[0] = cs; t[1] = sn; + t[2] = -sn; t[3] = cs; + t[4] = 0.0f; t[5] = 0.0f; +} + +static void nsvg__xformMultiply(float* t, float* s) +{ + float t0 = t[0] * s[0] + t[1] * s[2]; + float t2 = t[2] * s[0] + t[3] * s[2]; + float t4 = t[4] * s[0] + t[5] * s[2] + s[4]; + t[1] = t[0] * s[1] + t[1] * s[3]; + t[3] = t[2] * s[1] + t[3] * s[3]; + t[5] = t[4] * s[1] + t[5] * s[3] + s[5]; + t[0] = t0; + t[2] = t2; + t[4] = t4; +} + +static void nsvg__xformInverse(float* inv, float* t) +{ + double invdet, det = (double)t[0] * t[3] - (double)t[2] * t[1]; + if (det > -1e-6 && det < 1e-6) { + nsvg__xformIdentity(t); + return; + } + invdet = 1.0 / det; + inv[0] = (float)(t[3] * invdet); + inv[2] = (float)(-t[2] * invdet); + inv[4] = (float)(((double)t[2] * t[5] - (double)t[3] * t[4]) * invdet); + inv[1] = (float)(-t[1] * invdet); + inv[3] = (float)(t[0] * invdet); + inv[5] = (float)(((double)t[1] * t[4] - (double)t[0] * t[5]) * invdet); +} + +static void nsvg__xformPremultiply(float* t, float* s) +{ + float s2[6]; + memcpy(s2, s, sizeof(float)*6); + nsvg__xformMultiply(s2, t); + memcpy(t, s2, sizeof(float)*6); +} + +static void nsvg__xformPoint(float* dx, float* dy, float x, float y, float* t) +{ + *dx = x*t[0] + y*t[2] + t[4]; + *dy = x*t[1] + y*t[3] + t[5]; +} + +static void nsvg__xformVec(float* dx, float* dy, float x, float y, float* t) +{ + *dx = x*t[0] + y*t[2]; + *dy = x*t[1] + y*t[3]; +} + +#define NSVG_EPSILON (1e-12) + +static int nsvg__ptInBounds(float* pt, float* bounds) +{ + return pt[0] >= bounds[0] && pt[0] <= bounds[2] && pt[1] >= bounds[1] && pt[1] <= bounds[3]; +} + + +static double nsvg__evalBezier(double t, double p0, double p1, double p2, double p3) +{ + double it = 1.0-t; + return it*it*it*p0 + 3.0*it*it*t*p1 + 3.0*it*t*t*p2 + t*t*t*p3; +} + +static void nsvg__curveBounds(float* bounds, float* curve) +{ + int i, j, count; + double roots[2], a, b, c, b2ac, t, v; + float* v0 = &curve[0]; + float* v1 = &curve[2]; + float* v2 = &curve[4]; + float* v3 = &curve[6]; + + // Start the bounding box by end points + bounds[0] = nsvg__minf(v0[0], v3[0]); + bounds[1] = nsvg__minf(v0[1], v3[1]); + bounds[2] = nsvg__maxf(v0[0], v3[0]); + bounds[3] = nsvg__maxf(v0[1], v3[1]); + + // Bezier curve fits inside the convex hull of it's control points. + // If control points are inside the bounds, we're done. + if (nsvg__ptInBounds(v1, bounds) && nsvg__ptInBounds(v2, bounds)) + return; + + // Add bezier curve inflection points in X and Y. + for (i = 0; i < 2; i++) { + a = -3.0 * v0[i] + 9.0 * v1[i] - 9.0 * v2[i] + 3.0 * v3[i]; + b = 6.0 * v0[i] - 12.0 * v1[i] + 6.0 * v2[i]; + c = 3.0 * v1[i] - 3.0 * v0[i]; + count = 0; + if (fabs(a) < NSVG_EPSILON) { + if (fabs(b) > NSVG_EPSILON) { + t = -c / b; + if (t > NSVG_EPSILON && t < 1.0-NSVG_EPSILON) + roots[count++] = t; + } + } else { + b2ac = b*b - 4.0*c*a; + if (b2ac > NSVG_EPSILON) { + t = (-b + sqrt(b2ac)) / (2.0 * a); + if (t > NSVG_EPSILON && t < 1.0-NSVG_EPSILON) + roots[count++] = t; + t = (-b - sqrt(b2ac)) / (2.0 * a); + if (t > NSVG_EPSILON && t < 1.0-NSVG_EPSILON) + roots[count++] = t; + } + } + for (j = 0; j < count; j++) { + v = nsvg__evalBezier(roots[j], v0[i], v1[i], v2[i], v3[i]); + bounds[0+i] = nsvg__minf(bounds[0+i], (float)v); + bounds[2+i] = nsvg__maxf(bounds[2+i], (float)v); + } + } +} + +static NSVGparser* nsvg__createParser() +{ + NSVGparser* p; + p = (NSVGparser*)malloc(sizeof(NSVGparser)); + if (p == NULL) goto error; + memset(p, 0, sizeof(NSVGparser)); + + p->image = (NSVGimage*)malloc(sizeof(NSVGimage)); + if (p->image == NULL) goto error; + memset(p->image, 0, sizeof(NSVGimage)); + + // Init style + nsvg__xformIdentity(p->attr[0].xform); + memset(p->attr[0].id, 0, sizeof p->attr[0].id); + p->attr[0].fillColor = NSVG_RGB(0,0,0); + p->attr[0].strokeColor = NSVG_RGB(0,0,0); + p->attr[0].opacity = 1; + p->attr[0].fillOpacity = 1; + p->attr[0].strokeOpacity = 1; + p->attr[0].stopOpacity = 1; + p->attr[0].strokeWidth = 1; + p->attr[0].strokeLineJoin = NSVG_JOIN_MITER; + p->attr[0].strokeLineCap = NSVG_CAP_BUTT; + p->attr[0].fillRule = NSVG_FILLRULE_NONZERO; + p->attr[0].hasFill = 1; + p->attr[0].visible = 1; + + return p; + +error: + if (p) { + if (p->image) free(p->image); + free(p); + } + return NULL; +} + +static void nsvg__deletePaths(NSVGpath* path) +{ + while (path) { + NSVGpath *next = path->next; + if (path->pts != NULL) + free(path->pts); + free(path); + path = next; + } +} + +static void nsvg__deletePaint(NSVGpaint* paint) +{ + if (paint->type == NSVG_PAINT_LINEAR_GRADIENT || paint->type == NSVG_PAINT_RADIAL_GRADIENT) + free(paint->gradient); +} + +static void nsvg__deleteGradientData(NSVGgradientData* grad) +{ + NSVGgradientData* next; + while (grad != NULL) { + next = grad->next; + free(grad->stops); + free(grad); + grad = next; + } +} + +static void nsvg__deleteParser(NSVGparser* p) +{ + if (p != NULL) { + nsvg__deletePaths(p->plist); + nsvg__deleteGradientData(p->gradients); + nsvgDelete(p->image); + free(p->pts); + free(p); + } +} + +static void nsvg__resetPath(NSVGparser* p) +{ + p->npts = 0; +} + +static void nsvg__addPoint(NSVGparser* p, float x, float y) +{ + if (p->npts+1 > p->cpts) { + p->cpts = p->cpts ? p->cpts*2 : 8; + p->pts = (float*)realloc(p->pts, p->cpts*2*sizeof(float)); + if (!p->pts) return; + } + p->pts[p->npts*2+0] = x; + p->pts[p->npts*2+1] = y; + p->npts++; +} + +static void nsvg__moveTo(NSVGparser* p, float x, float y) +{ + if (p->npts > 0) { + p->pts[(p->npts-1)*2+0] = x; + p->pts[(p->npts-1)*2+1] = y; + } else { + nsvg__addPoint(p, x, y); + } +} + +static void nsvg__lineTo(NSVGparser* p, float x, float y) +{ + float px,py, dx,dy; + if (p->npts > 0) { + px = p->pts[(p->npts-1)*2+0]; + py = p->pts[(p->npts-1)*2+1]; + dx = x - px; + dy = y - py; + nsvg__addPoint(p, px + dx/3.0f, py + dy/3.0f); + nsvg__addPoint(p, x - dx/3.0f, y - dy/3.0f); + nsvg__addPoint(p, x, y); + } +} + +static void nsvg__cubicBezTo(NSVGparser* p, float cpx1, float cpy1, float cpx2, float cpy2, float x, float y) +{ + nsvg__addPoint(p, cpx1, cpy1); + nsvg__addPoint(p, cpx2, cpy2); + nsvg__addPoint(p, x, y); +} + +static NSVGattrib* nsvg__getAttr(NSVGparser* p) +{ + return &p->attr[p->attrHead]; +} + +static void nsvg__pushAttr(NSVGparser* p) +{ + if (p->attrHead < NSVG_MAX_ATTR-1) { + p->attrHead++; + memcpy(&p->attr[p->attrHead], &p->attr[p->attrHead-1], sizeof(NSVGattrib)); + } +} + +static void nsvg__popAttr(NSVGparser* p) +{ + if (p->attrHead > 0) + p->attrHead--; +} + +static float nsvg__actualOrigX(NSVGparser* p) +{ + return p->viewMinx; +} + +static float nsvg__actualOrigY(NSVGparser* p) +{ + return p->viewMiny; +} + +static float nsvg__actualWidth(NSVGparser* p) +{ + return p->viewWidth; +} + +static float nsvg__actualHeight(NSVGparser* p) +{ + return p->viewHeight; +} + +static float nsvg__actualLength(NSVGparser* p) +{ + float w = nsvg__actualWidth(p), h = nsvg__actualHeight(p); + return sqrtf(w*w + h*h) / sqrtf(2.0f); +} + +static float nsvg__convertToPixels(NSVGparser* p, NSVGcoordinate c, float orig, float length) +{ + NSVGattrib* attr = nsvg__getAttr(p); + switch (c.units) { + case NSVG_UNITS_USER: return c.value; + case NSVG_UNITS_PX: return c.value; + case NSVG_UNITS_PT: return c.value / 72.0f * p->dpi; + case NSVG_UNITS_PC: return c.value / 6.0f * p->dpi; + case NSVG_UNITS_MM: return c.value / 25.4f * p->dpi; + case NSVG_UNITS_CM: return c.value / 2.54f * p->dpi; + case NSVG_UNITS_IN: return c.value * p->dpi; + case NSVG_UNITS_EM: return c.value * attr->fontSize; + case NSVG_UNITS_EX: return c.value * attr->fontSize * 0.52f; // x-height of Helvetica. + case NSVG_UNITS_PERCENT: return orig + c.value / 100.0f * length; + default: return c.value; + } + return c.value; +} + +static NSVGgradientData* nsvg__findGradientData(NSVGparser* p, const char* id) +{ + NSVGgradientData* grad = p->gradients; + while (grad) { + if (strcmp(grad->id, id) == 0) + return grad; + grad = grad->next; + } + return NULL; +} + +static NSVGgradient* nsvg__createGradient(NSVGparser* p, const char* id, const float* localBounds, char* paintType) +{ + NSVGattrib* attr = nsvg__getAttr(p); + NSVGgradientData* data = NULL; + NSVGgradientData* ref = NULL; + NSVGgradientStop* stops = NULL; + NSVGgradient* grad; + float ox, oy, sw, sh, sl; + int nstops = 0; + + data = nsvg__findGradientData(p, id); + if (data == NULL) return NULL; + + // TODO: use ref to fill in all unset values too. + ref = data; + while (ref != NULL) { + if (stops == NULL && ref->stops != NULL) { + stops = ref->stops; + nstops = ref->nstops; + break; + } + ref = nsvg__findGradientData(p, ref->ref); + } + if (stops == NULL) return NULL; + + grad = (NSVGgradient*)malloc(sizeof(NSVGgradient) + sizeof(NSVGgradientStop)*(nstops-1)); + if (grad == NULL) return NULL; + + // The shape width and height. + if (data->units == NSVG_OBJECT_SPACE) { + ox = localBounds[0]; + oy = localBounds[1]; + sw = localBounds[2] - localBounds[0]; + sh = localBounds[3] - localBounds[1]; + } else { + ox = nsvg__actualOrigX(p); + oy = nsvg__actualOrigY(p); + sw = nsvg__actualWidth(p); + sh = nsvg__actualHeight(p); + } + sl = sqrtf(sw*sw + sh*sh) / sqrtf(2.0f); + + if (data->type == NSVG_PAINT_LINEAR_GRADIENT) { + float x1, y1, x2, y2, dx, dy; + x1 = nsvg__convertToPixels(p, data->linear.x1, ox, sw); + y1 = nsvg__convertToPixels(p, data->linear.y1, oy, sh); + x2 = nsvg__convertToPixels(p, data->linear.x2, ox, sw); + y2 = nsvg__convertToPixels(p, data->linear.y2, oy, sh); + // Calculate transform aligned to the line + dx = x2 - x1; + dy = y2 - y1; + grad->xform[0] = dy; grad->xform[1] = -dx; + grad->xform[2] = dx; grad->xform[3] = dy; + grad->xform[4] = x1; grad->xform[5] = y1; + } else { + float cx, cy, fx, fy, r; + cx = nsvg__convertToPixels(p, data->radial.cx, ox, sw); + cy = nsvg__convertToPixels(p, data->radial.cy, oy, sh); + fx = nsvg__convertToPixels(p, data->radial.fx, ox, sw); + fy = nsvg__convertToPixels(p, data->radial.fy, oy, sh); + r = nsvg__convertToPixels(p, data->radial.r, 0, sl); + // Calculate transform aligned to the circle + grad->xform[0] = r; grad->xform[1] = 0; + grad->xform[2] = 0; grad->xform[3] = r; + grad->xform[4] = cx; grad->xform[5] = cy; + grad->fx = fx / r; + grad->fy = fy / r; + } + + if( data->units == NSVG_OBJECT_SPACE) + { + float scaling[6],t[6]; + scaling[0] = 1.0 / ( localBounds[2] - localBounds[0] ); + scaling[1] = 0.0; + scaling[2] = 0.0; + scaling[3] = 1.0 / ( localBounds[3] - localBounds[1]); + scaling[4] = -localBounds[0] * scaling[0]; + scaling[5] = -localBounds[1] * scaling[3]; + memcpy(t, scaling, sizeof(float)*6); + nsvg__xformInverse(scaling, t); + nsvg__xformMultiply(grad->xform, data->xform); + nsvg__xformMultiply(grad->xform, scaling); + nsvg__xformMultiply(grad->xform, attr->xform); + } + else + { + nsvg__xformMultiply(grad->xform, data->xform); + nsvg__xformMultiply(grad->xform, attr->xform); + } + + grad->spread = data->spread; + memcpy(grad->stops, stops, nstops*sizeof(NSVGgradientStop)); + grad->nstops = nstops; + + *paintType = data->type; + + return grad; +} + +static float nsvg__getAverageScale(float* t) +{ + float sx = sqrtf(t[0]*t[0] + t[2]*t[2]); + float sy = sqrtf(t[1]*t[1] + t[3]*t[3]); + return (sx + sy) * 0.5f; +} + +static void nsvg__getLocalBounds(float* bounds, NSVGshape *shape, float* xform) +{ + NSVGpath* path; + float curve[4*2], curveBounds[4]; + int i, first = 1; + for (path = shape->paths; path != NULL; path = path->next) { + nsvg__xformPoint(&curve[0], &curve[1], path->pts[0], path->pts[1], xform); + for (i = 0; i < path->npts-1; i += 3) { + nsvg__xformPoint(&curve[2], &curve[3], path->pts[(i+1)*2], path->pts[(i+1)*2+1], xform); + nsvg__xformPoint(&curve[4], &curve[5], path->pts[(i+2)*2], path->pts[(i+2)*2+1], xform); + nsvg__xformPoint(&curve[6], &curve[7], path->pts[(i+3)*2], path->pts[(i+3)*2+1], xform); + nsvg__curveBounds(curveBounds, curve); + if (first) { + bounds[0] = curveBounds[0]; + bounds[1] = curveBounds[1]; + bounds[2] = curveBounds[2]; + bounds[3] = curveBounds[3]; + first = 0; + } else { + bounds[0] = nsvg__minf(bounds[0], curveBounds[0]); + bounds[1] = nsvg__minf(bounds[1], curveBounds[1]); + bounds[2] = nsvg__maxf(bounds[2], curveBounds[2]); + bounds[3] = nsvg__maxf(bounds[3], curveBounds[3]); + } + curve[0] = curve[6]; + curve[1] = curve[7]; + } + } +} + +static void nsvg__addShape(NSVGparser* p) +{ + NSVGattrib* attr = nsvg__getAttr(p); + float scale = 1.0f; + NSVGshape *shape, *cur, *prev; + NSVGpath* path; + int i; + + if (p->plist == NULL) + return; + + shape = (NSVGshape*)malloc(sizeof(NSVGshape)); + if (shape == NULL) goto error; + memset(shape, 0, sizeof(NSVGshape)); + + memcpy(shape->id, attr->id, sizeof shape->id); + scale = nsvg__getAverageScale(attr->xform); + shape->strokeWidth = attr->strokeWidth * scale; + shape->strokeDashOffset = attr->strokeDashOffset * scale; + shape->strokeDashCount = attr->strokeDashCount; + for (i = 0; i < attr->strokeDashCount; i++) + shape->strokeDashArray[i] = attr->strokeDashArray[i] * scale; + shape->strokeLineJoin = attr->strokeLineJoin; + shape->strokeLineCap = attr->strokeLineCap; + shape->fillRule = attr->fillRule; + shape->opacity = attr->opacity; + + shape->paths = p->plist; + p->plist = NULL; + + // Calculate shape bounds + shape->bounds[0] = shape->paths->bounds[0]; + shape->bounds[1] = shape->paths->bounds[1]; + shape->bounds[2] = shape->paths->bounds[2]; + shape->bounds[3] = shape->paths->bounds[3]; + for (path = shape->paths->next; path != NULL; path = path->next) { + shape->bounds[0] = nsvg__minf(shape->bounds[0], path->bounds[0]); + shape->bounds[1] = nsvg__minf(shape->bounds[1], path->bounds[1]); + shape->bounds[2] = nsvg__maxf(shape->bounds[2], path->bounds[2]); + shape->bounds[3] = nsvg__maxf(shape->bounds[3], path->bounds[3]); + } + + // Set fill + if (attr->hasFill == 0) { + shape->fill.type = NSVG_PAINT_NONE; + } else if (attr->hasFill == 1) { + shape->fill.type = NSVG_PAINT_COLOR; + shape->fill.color = attr->fillColor; + shape->fill.color |= (unsigned int)(attr->fillOpacity*255) << 24; + } else if (attr->hasFill == 2) { + shape->opacity *= attr->fillOpacity; + float inv[6], localBounds[4]; + nsvg__xformInverse(inv, attr->xform); + nsvg__getLocalBounds(localBounds, shape, inv); + shape->fill.gradient = nsvg__createGradient(p, attr->fillGradient, localBounds, &shape->fill.type); + if (shape->fill.gradient == NULL) { + shape->fill.type = NSVG_PAINT_NONE; + } + } + + // Set stroke + if (attr->hasStroke == 0) { + shape->stroke.type = NSVG_PAINT_NONE; + } else if (attr->hasStroke == 1) { + shape->stroke.type = NSVG_PAINT_COLOR; + shape->stroke.color = attr->strokeColor; + shape->stroke.color |= (unsigned int)(attr->strokeOpacity*255) << 24; + } else if (attr->hasStroke == 2) { + float inv[6], localBounds[4]; + nsvg__xformInverse(inv, attr->xform); + nsvg__getLocalBounds(localBounds, shape, inv); + shape->stroke.gradient = nsvg__createGradient(p, attr->strokeGradient, localBounds, &shape->stroke.type); + if (shape->stroke.gradient == NULL) + shape->stroke.type = NSVG_PAINT_NONE; + } + + // Set flags + shape->flags = (attr->visible ? NSVG_FLAGS_VISIBLE : 0x00); + + // Add to tail + prev = NULL; + cur = p->image->shapes; + while (cur != NULL) { + prev = cur; + cur = cur->next; + } + if (prev == NULL) + p->image->shapes = shape; + else + prev->next = shape; + + return; + +error: + if (shape) free(shape); +} + +static void nsvg__addPath(NSVGparser* p, char closed) +{ + NSVGattrib* attr = nsvg__getAttr(p); + NSVGpath* path = NULL; + float bounds[4]; + float* curve; + int i; + + if (p->npts < 4) + return; + + if (closed) + nsvg__lineTo(p, p->pts[0], p->pts[1]); + + path = (NSVGpath*)malloc(sizeof(NSVGpath)); + if (path == NULL) goto error; + memset(path, 0, sizeof(NSVGpath)); + + path->pts = (float*)malloc(p->npts*2*sizeof(float)); + if (path->pts == NULL) goto error; + path->closed = closed; + path->npts = p->npts; + + // Transform path. + for (i = 0; i < p->npts; ++i) + nsvg__xformPoint(&path->pts[i*2], &path->pts[i*2+1], p->pts[i*2], p->pts[i*2+1], attr->xform); + + // Find bounds + for (i = 0; i < path->npts-1; i += 3) { + curve = &path->pts[i*2]; + nsvg__curveBounds(bounds, curve); + if (i == 0) { + path->bounds[0] = bounds[0]; + path->bounds[1] = bounds[1]; + path->bounds[2] = bounds[2]; + path->bounds[3] = bounds[3]; + } else { + path->bounds[0] = nsvg__minf(path->bounds[0], bounds[0]); + path->bounds[1] = nsvg__minf(path->bounds[1], bounds[1]); + path->bounds[2] = nsvg__maxf(path->bounds[2], bounds[2]); + path->bounds[3] = nsvg__maxf(path->bounds[3], bounds[3]); + } + } + + path->next = p->plist; + p->plist = path; + + return; + +error: + if (path != NULL) { + if (path->pts != NULL) free(path->pts); + free(path); + } +} + +static const char* nsvg__parseNumber(const char* s, char* it, const int size) +{ + const int last = size-1; + int i = 0; + + // sign + if (*s == '-' || *s == '+') { + if (i < last) it[i++] = *s; + s++; + } + // integer part + while (*s && nsvg__isdigit(*s)) { + if (i < last) it[i++] = *s; + s++; + } + if (*s == '.') { + // decimal point + if (i < last) it[i++] = *s; + s++; + // fraction part + while (*s && nsvg__isdigit(*s)) { + if (i < last) it[i++] = *s; + s++; + } + } + // exponent + if (*s == 'e' || *s == 'E') { + if (i < last) it[i++] = *s; + s++; + if (*s == '-' || *s == '+') { + if (i < last) it[i++] = *s; + s++; + } + while (*s && nsvg__isdigit(*s)) { + if (i < last) it[i++] = *s; + s++; + } + } + it[i] = '\0'; + + return s; +} + +static const char* nsvg__getNextPathItem(const char* s, char* it) +{ + it[0] = '\0'; + // Skip white spaces and commas + while (*s && (nsvg__isspace(*s) || *s == ',')) s++; + if (!*s) return s; + if (*s == '-' || *s == '+' || *s == '.' || nsvg__isdigit(*s)) { + s = nsvg__parseNumber(s, it, 64); + } else { + // Parse command + it[0] = *s++; + it[1] = '\0'; + return s; + } + + return s; +} + +static unsigned int nsvg__parseColorHex(const char* str) +{ + unsigned int c = 0, r = 0, g = 0, b = 0; + int n = 0; + str++; // skip # + // Calculate number of characters. + while(str[n] && !nsvg__isspace(str[n])) + n++; + if (n == 6) { + sscanf(str, "%x", &c); + } else if (n == 3) { + sscanf(str, "%x", &c); + c = (c&0xf) | ((c&0xf0) << 4) | ((c&0xf00) << 8); + c |= c<<4; + } + r = (c >> 16) & 0xff; + g = (c >> 8) & 0xff; + b = c & 0xff; + return NSVG_RGB(r,g,b); +} + +static unsigned int nsvg__parseColorRGB(const char* str) +{ + int r = -1, g = -1, b = -1; + char s1[32]="", s2[32]=""; + sscanf(str + 4, "%d%[%%, \t]%d%[%%, \t]%d", &r, s1, &g, s2, &b); + if (strchr(s1, '%')) { + return NSVG_RGB((r*255)/100,(g*255)/100,(b*255)/100); + } else { + return NSVG_RGB(r,g,b); + } +} + +typedef struct NSVGNamedColor { + const char* name; + unsigned int color; +} NSVGNamedColor; + +NSVGNamedColor nsvg__colors[] = { + + { "red", NSVG_RGB(255, 0, 0) }, + { "green", NSVG_RGB( 0, 128, 0) }, + { "blue", NSVG_RGB( 0, 0, 255) }, + { "yellow", NSVG_RGB(255, 255, 0) }, + { "cyan", NSVG_RGB( 0, 255, 255) }, + { "magenta", NSVG_RGB(255, 0, 255) }, + { "black", NSVG_RGB( 0, 0, 0) }, + { "grey", NSVG_RGB(128, 128, 128) }, + { "gray", NSVG_RGB(128, 128, 128) }, + { "white", NSVG_RGB(255, 255, 255) }, + + { "aliceblue", NSVG_RGB(240, 248, 255) }, + { "antiquewhite", NSVG_RGB(250, 235, 215) }, + { "aqua", NSVG_RGB( 0, 255, 255) }, + { "aquamarine", NSVG_RGB(127, 255, 212) }, + { "azure", NSVG_RGB(240, 255, 255) }, + { "beige", NSVG_RGB(245, 245, 220) }, + { "bisque", NSVG_RGB(255, 228, 196) }, + { "blanchedalmond", NSVG_RGB(255, 235, 205) }, + { "blueviolet", NSVG_RGB(138, 43, 226) }, + { "brown", NSVG_RGB(165, 42, 42) }, + { "burlywood", NSVG_RGB(222, 184, 135) }, + { "cadetblue", NSVG_RGB( 95, 158, 160) }, + { "chartreuse", NSVG_RGB(127, 255, 0) }, + { "chocolate", NSVG_RGB(210, 105, 30) }, + { "coral", NSVG_RGB(255, 127, 80) }, + { "cornflowerblue", NSVG_RGB(100, 149, 237) }, + { "cornsilk", NSVG_RGB(255, 248, 220) }, + { "crimson", NSVG_RGB(220, 20, 60) }, + { "darkblue", NSVG_RGB( 0, 0, 139) }, + { "darkcyan", NSVG_RGB( 0, 139, 139) }, + { "darkgoldenrod", NSVG_RGB(184, 134, 11) }, + { "darkgray", NSVG_RGB(169, 169, 169) }, + { "darkgreen", NSVG_RGB( 0, 100, 0) }, + { "darkgrey", NSVG_RGB(169, 169, 169) }, + { "darkkhaki", NSVG_RGB(189, 183, 107) }, + { "darkmagenta", NSVG_RGB(139, 0, 139) }, + { "darkolivegreen", NSVG_RGB( 85, 107, 47) }, + { "darkorange", NSVG_RGB(255, 140, 0) }, + { "darkorchid", NSVG_RGB(153, 50, 204) }, + { "darkred", NSVG_RGB(139, 0, 0) }, + { "darksalmon", NSVG_RGB(233, 150, 122) }, + { "darkseagreen", NSVG_RGB(143, 188, 143) }, + { "darkslateblue", NSVG_RGB( 72, 61, 139) }, + { "darkslategray", NSVG_RGB( 47, 79, 79) }, + { "darkslategrey", NSVG_RGB( 47, 79, 79) }, + { "darkturquoise", NSVG_RGB( 0, 206, 209) }, + { "darkviolet", NSVG_RGB(148, 0, 211) }, + { "deeppink", NSVG_RGB(255, 20, 147) }, + { "deepskyblue", NSVG_RGB( 0, 191, 255) }, + { "dimgray", NSVG_RGB(105, 105, 105) }, + { "dimgrey", NSVG_RGB(105, 105, 105) }, + { "dodgerblue", NSVG_RGB( 30, 144, 255) }, + { "firebrick", NSVG_RGB(178, 34, 34) }, + { "floralwhite", NSVG_RGB(255, 250, 240) }, + { "forestgreen", NSVG_RGB( 34, 139, 34) }, + { "fuchsia", NSVG_RGB(255, 0, 255) }, + { "gainsboro", NSVG_RGB(220, 220, 220) }, + { "ghostwhite", NSVG_RGB(248, 248, 255) }, + { "gold", NSVG_RGB(255, 215, 0) }, + { "goldenrod", NSVG_RGB(218, 165, 32) }, + { "greenyellow", NSVG_RGB(173, 255, 47) }, + { "honeydew", NSVG_RGB(240, 255, 240) }, + { "hotpink", NSVG_RGB(255, 105, 180) }, + { "indianred", NSVG_RGB(205, 92, 92) }, + { "indigo", NSVG_RGB( 75, 0, 130) }, + { "ivory", NSVG_RGB(255, 255, 240) }, + { "khaki", NSVG_RGB(240, 230, 140) }, + { "lavender", NSVG_RGB(230, 230, 250) }, + { "lavenderblush", NSVG_RGB(255, 240, 245) }, + { "lawngreen", NSVG_RGB(124, 252, 0) }, + { "lemonchiffon", NSVG_RGB(255, 250, 205) }, + { "lightblue", NSVG_RGB(173, 216, 230) }, + { "lightcoral", NSVG_RGB(240, 128, 128) }, + { "lightcyan", NSVG_RGB(224, 255, 255) }, + { "lightgoldenrodyellow", NSVG_RGB(250, 250, 210) }, + { "lightgray", NSVG_RGB(211, 211, 211) }, + { "lightgreen", NSVG_RGB(144, 238, 144) }, + { "lightgrey", NSVG_RGB(211, 211, 211) }, + { "lightpink", NSVG_RGB(255, 182, 193) }, + { "lightsalmon", NSVG_RGB(255, 160, 122) }, + { "lightseagreen", NSVG_RGB( 32, 178, 170) }, + { "lightskyblue", NSVG_RGB(135, 206, 250) }, + { "lightslategray", NSVG_RGB(119, 136, 153) }, + { "lightslategrey", NSVG_RGB(119, 136, 153) }, + { "lightsteelblue", NSVG_RGB(176, 196, 222) }, + { "lightyellow", NSVG_RGB(255, 255, 224) }, + { "lime", NSVG_RGB( 0, 255, 0) }, + { "limegreen", NSVG_RGB( 50, 205, 50) }, + { "linen", NSVG_RGB(250, 240, 230) }, + { "maroon", NSVG_RGB(128, 0, 0) }, + { "mediumaquamarine", NSVG_RGB(102, 205, 170) }, + { "mediumblue", NSVG_RGB( 0, 0, 205) }, + { "mediumorchid", NSVG_RGB(186, 85, 211) }, + { "mediumpurple", NSVG_RGB(147, 112, 219) }, + { "mediumseagreen", NSVG_RGB( 60, 179, 113) }, + { "mediumslateblue", NSVG_RGB(123, 104, 238) }, + { "mediumspringgreen", NSVG_RGB( 0, 250, 154) }, + { "mediumturquoise", NSVG_RGB( 72, 209, 204) }, + { "mediumvioletred", NSVG_RGB(199, 21, 133) }, + { "midnightblue", NSVG_RGB( 25, 25, 112) }, + { "mintcream", NSVG_RGB(245, 255, 250) }, + { "mistyrose", NSVG_RGB(255, 228, 225) }, + { "moccasin", NSVG_RGB(255, 228, 181) }, + { "navajowhite", NSVG_RGB(255, 222, 173) }, + { "navy", NSVG_RGB( 0, 0, 128) }, + { "oldlace", NSVG_RGB(253, 245, 230) }, + { "olive", NSVG_RGB(128, 128, 0) }, + { "olivedrab", NSVG_RGB(107, 142, 35) }, + { "orange", NSVG_RGB(255, 165, 0) }, + { "orangered", NSVG_RGB(255, 69, 0) }, + { "orchid", NSVG_RGB(218, 112, 214) }, + { "palegoldenrod", NSVG_RGB(238, 232, 170) }, + { "palegreen", NSVG_RGB(152, 251, 152) }, + { "paleturquoise", NSVG_RGB(175, 238, 238) }, + { "palevioletred", NSVG_RGB(219, 112, 147) }, + { "papayawhip", NSVG_RGB(255, 239, 213) }, + { "peachpuff", NSVG_RGB(255, 218, 185) }, + { "peru", NSVG_RGB(205, 133, 63) }, + { "pink", NSVG_RGB(255, 192, 203) }, + { "plum", NSVG_RGB(221, 160, 221) }, + { "powderblue", NSVG_RGB(176, 224, 230) }, + { "purple", NSVG_RGB(128, 0, 128) }, + { "rosybrown", NSVG_RGB(188, 143, 143) }, + { "royalblue", NSVG_RGB( 65, 105, 225) }, + { "saddlebrown", NSVG_RGB(139, 69, 19) }, + { "salmon", NSVG_RGB(250, 128, 114) }, + { "sandybrown", NSVG_RGB(244, 164, 96) }, + { "seagreen", NSVG_RGB( 46, 139, 87) }, + { "seashell", NSVG_RGB(255, 245, 238) }, + { "sienna", NSVG_RGB(160, 82, 45) }, + { "silver", NSVG_RGB(192, 192, 192) }, + { "skyblue", NSVG_RGB(135, 206, 235) }, + { "slateblue", NSVG_RGB(106, 90, 205) }, + { "slategray", NSVG_RGB(112, 128, 144) }, + { "slategrey", NSVG_RGB(112, 128, 144) }, + { "snow", NSVG_RGB(255, 250, 250) }, + { "springgreen", NSVG_RGB( 0, 255, 127) }, + { "steelblue", NSVG_RGB( 70, 130, 180) }, + { "tan", NSVG_RGB(210, 180, 140) }, + { "teal", NSVG_RGB( 0, 128, 128) }, + { "thistle", NSVG_RGB(216, 191, 216) }, + { "tomato", NSVG_RGB(255, 99, 71) }, + { "turquoise", NSVG_RGB( 64, 224, 208) }, + { "violet", NSVG_RGB(238, 130, 238) }, + { "wheat", NSVG_RGB(245, 222, 179) }, + { "whitesmoke", NSVG_RGB(245, 245, 245) }, + { "yellowgreen", NSVG_RGB(154, 205, 50) }, +}; + +static unsigned int nsvg__parseColorName(const char* str) +{ + int i, ncolors = sizeof(nsvg__colors) / sizeof(NSVGNamedColor); + + for (i = 0; i < ncolors; i++) { + if (strcmp(nsvg__colors[i].name, str) == 0) { + return nsvg__colors[i].color; + } + } + + return NSVG_RGB(128, 128, 128); +} + +static unsigned int nsvg__parseColor(const char* str) +{ + size_t len = 0; + while(*str == ' ') ++str; + len = strlen(str); + if (len >= 1 && *str == '#') + return nsvg__parseColorHex(str); + else if (len >= 4 && str[0] == 'r' && str[1] == 'g' && str[2] == 'b' && str[3] == '(') + return nsvg__parseColorRGB(str); + return nsvg__parseColorName(str); +} + +static float nsvg__parseOpacity(const char* str) +{ + float val = 0; + sscanf(str, "%f", &val); + if (val < 0.0f) val = 0.0f; + if (val > 1.0f) val = 1.0f; + return val; +} + +static int nsvg__parseUnits(const char* units) +{ + if (units[0] == 'p' && units[1] == 'x') + return NSVG_UNITS_PX; + else if (units[0] == 'p' && units[1] == 't') + return NSVG_UNITS_PT; + else if (units[0] == 'p' && units[1] == 'c') + return NSVG_UNITS_PC; + else if (units[0] == 'm' && units[1] == 'm') + return NSVG_UNITS_MM; + else if (units[0] == 'c' && units[1] == 'm') + return NSVG_UNITS_CM; + else if (units[0] == 'i' && units[1] == 'n') + return NSVG_UNITS_IN; + else if (units[0] == '%') + return NSVG_UNITS_PERCENT; + else if (units[0] == 'e' && units[1] == 'm') + return NSVG_UNITS_EM; + else if (units[0] == 'e' && units[1] == 'x') + return NSVG_UNITS_EX; + return NSVG_UNITS_USER; +} + +static NSVGcoordinate nsvg__parseCoordinateRaw(const char* str) +{ + NSVGcoordinate coord = {0, NSVG_UNITS_USER}; + char units[32]=""; + sscanf(str, "%f%s", &coord.value, units); + coord.units = nsvg__parseUnits(units); + return coord; +} + +static NSVGcoordinate nsvg__coord(float v, int units) +{ + NSVGcoordinate coord = {v, units}; + return coord; +} + +static float nsvg__parseCoordinate(NSVGparser* p, const char* str, float orig, float length) +{ + NSVGcoordinate coord = nsvg__parseCoordinateRaw(str); + return nsvg__convertToPixels(p, coord, orig, length); +} + +static int nsvg__parseTransformArgs(const char* str, float* args, int maxNa, int* na) +{ + const char* end; + const char* ptr; + char it[64]; + + *na = 0; + ptr = str; + while (*ptr && *ptr != '(') ++ptr; + if (*ptr == 0) + return 1; + end = ptr; + while (*end && *end != ')') ++end; + if (*end == 0) + return 1; + + while (ptr < end) { + if (*ptr == '-' || *ptr == '+' || *ptr == '.' || nsvg__isdigit(*ptr)) { + if (*na >= maxNa) return 0; + ptr = nsvg__parseNumber(ptr, it, 64); + args[(*na)++] = (float)atof(it); + } else { + ++ptr; + } + } + return (int)(end - str); +} + + +static int nsvg__parseMatrix(float* xform, const char* str) +{ + float t[6]; + int na = 0; + int len = nsvg__parseTransformArgs(str, t, 6, &na); + if (na != 6) return len; + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseTranslate(float* xform, const char* str) +{ + float args[2]; + float t[6]; + int na = 0; + int len = nsvg__parseTransformArgs(str, args, 2, &na); + if (na == 1) args[1] = 0.0; + + nsvg__xformSetTranslation(t, args[0], args[1]); + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseScale(float* xform, const char* str) +{ + float args[2]; + int na = 0; + float t[6]; + int len = nsvg__parseTransformArgs(str, args, 2, &na); + if (na == 1) args[1] = args[0]; + nsvg__xformSetScale(t, args[0], args[1]); + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseSkewX(float* xform, const char* str) +{ + float args[1]; + int na = 0; + float t[6]; + int len = nsvg__parseTransformArgs(str, args, 1, &na); + nsvg__xformSetSkewX(t, args[0]/180.0f*NSVG_PI); + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseSkewY(float* xform, const char* str) +{ + float args[1]; + int na = 0; + float t[6]; + int len = nsvg__parseTransformArgs(str, args, 1, &na); + nsvg__xformSetSkewY(t, args[0]/180.0f*NSVG_PI); + memcpy(xform, t, sizeof(float)*6); + return len; +} + +static int nsvg__parseRotate(float* xform, const char* str) +{ + float args[3]; + int na = 0; + float m[6]; + float t[6]; + int len = nsvg__parseTransformArgs(str, args, 3, &na); + if (na == 1) + args[1] = args[2] = 0.0f; + nsvg__xformIdentity(m); + + if (na > 1) { + nsvg__xformSetTranslation(t, -args[1], -args[2]); + nsvg__xformMultiply(m, t); + } + + nsvg__xformSetRotation(t, args[0]/180.0f*NSVG_PI); + nsvg__xformMultiply(m, t); + + if (na > 1) { + nsvg__xformSetTranslation(t, args[1], args[2]); + nsvg__xformMultiply(m, t); + } + + memcpy(xform, m, sizeof(float)*6); + + return len; +} + +static void nsvg__parseTransform(float* xform, const char* str) +{ + float t[6]; + nsvg__xformIdentity(xform); + while (*str) + { + if (strncmp(str, "matrix", 6) == 0) + str += nsvg__parseMatrix(t, str); + else if (strncmp(str, "translate", 9) == 0) + str += nsvg__parseTranslate(t, str); + else if (strncmp(str, "scale", 5) == 0) + str += nsvg__parseScale(t, str); + else if (strncmp(str, "rotate", 6) == 0) + str += nsvg__parseRotate(t, str); + else if (strncmp(str, "skewX", 5) == 0) + str += nsvg__parseSkewX(t, str); + else if (strncmp(str, "skewY", 5) == 0) + str += nsvg__parseSkewY(t, str); + else{ + ++str; + continue; + } + + nsvg__xformPremultiply(xform, t); + } +} + +static void nsvg__parseUrl(char* id, const char* str) +{ + int i = 0; + str += 4; // "url("; + if (*str == '#') + str++; + while (i < 63 && *str != ')') { + id[i] = *str++; + i++; + } + id[i] = '\0'; +} + +static char nsvg__parseLineCap(const char* str) +{ + if (strcmp(str, "butt") == 0) + return NSVG_CAP_BUTT; + else if (strcmp(str, "round") == 0) + return NSVG_CAP_ROUND; + else if (strcmp(str, "square") == 0) + return NSVG_CAP_SQUARE; + // TODO: handle inherit. + return NSVG_CAP_BUTT; +} + +static char nsvg__parseLineJoin(const char* str) +{ + if (strcmp(str, "miter") == 0) + return NSVG_JOIN_MITER; + else if (strcmp(str, "round") == 0) + return NSVG_JOIN_ROUND; + else if (strcmp(str, "bevel") == 0) + return NSVG_JOIN_BEVEL; + // TODO: handle inherit. + return NSVG_CAP_BUTT; +} + +static char nsvg__parseFillRule(const char* str) +{ + if (strcmp(str, "nonzero") == 0) + return NSVG_FILLRULE_NONZERO; + else if (strcmp(str, "evenodd") == 0) + return NSVG_FILLRULE_EVENODD; + // TODO: handle inherit. + return NSVG_FILLRULE_NONZERO; +} + +static const char* nsvg__getNextDashItem(const char* s, char* it) +{ + int n = 0; + it[0] = '\0'; + // Skip white spaces and commas + while (*s && (nsvg__isspace(*s) || *s == ',')) s++; + // Advance until whitespace, comma or end. + while (*s && (!nsvg__isspace(*s) && *s != ',')) { + if (n < 63) + it[n++] = *s; + s++; + } + it[n++] = '\0'; + return s; +} + +static int nsvg__parseStrokeDashArray(NSVGparser* p, const char* str, float* strokeDashArray) +{ + char item[64]; + int count = 0, i; + float sum = 0.0f; + + // Handle "none" + if (str[0] == 'n') + return 0; + + // Parse dashes + while (*str) { + str = nsvg__getNextDashItem(str, item); + if (!*item) break; + if (count < NSVG_MAX_DASHES) + strokeDashArray[count++] = fabsf(nsvg__parseCoordinate(p, item, 0.0f, nsvg__actualLength(p))); + } + + for (i = 0; i < count; i++) + sum += strokeDashArray[i]; + if (sum <= 1e-6f) + count = 0; + + return count; +} + +static void nsvg__parseStyle(NSVGparser* p, const char* str); + +static int nsvg__parseAttr(NSVGparser* p, const char* name, const char* value) +{ + float xform[6]; + NSVGattrib* attr = nsvg__getAttr(p); + if (!attr) return 0; + + if (strcmp(name, "style") == 0) { + nsvg__parseStyle(p, value); + } else if (strcmp(name, "display") == 0) { + if (strcmp(value, "none") == 0) + attr->visible = 0; + // Don't reset ->visible on display:inline, one display:none hides the whole subtree + + } else if (strcmp(name, "fill") == 0) { + if (strcmp(value, "none") == 0) { + attr->hasFill = 0; + } else if (strncmp(value, "url(", 4) == 0) { + attr->hasFill = 2; + nsvg__parseUrl(attr->fillGradient, value); + } else { + attr->hasFill = 1; + attr->fillColor = nsvg__parseColor(value); + } + } else if (strcmp(name, "opacity") == 0) { + attr->opacity = nsvg__parseOpacity(value); + } else if (strcmp(name, "fill-opacity") == 0) { + attr->fillOpacity = nsvg__parseOpacity(value); + } else if (strcmp(name, "stroke") == 0) { + if (strcmp(value, "none") == 0) { + attr->hasStroke = 0; + } else if (strncmp(value, "url(", 4) == 0) { + attr->hasStroke = 2; + nsvg__parseUrl(attr->strokeGradient, value); + } else { + attr->hasStroke = 1; + attr->strokeColor = nsvg__parseColor(value); + } + } else if (strcmp(name, "stroke-width") == 0) { + attr->strokeWidth = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p)); + } else if (strcmp(name, "stroke-dasharray") == 0) { + attr->strokeDashCount = nsvg__parseStrokeDashArray(p, value, attr->strokeDashArray); + } else if (strcmp(name, "stroke-dashoffset") == 0) { + attr->strokeDashOffset = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p)); + } else if (strcmp(name, "stroke-opacity") == 0) { + attr->strokeOpacity = nsvg__parseOpacity(value); + } else if (strcmp(name, "stroke-linecap") == 0) { + attr->strokeLineCap = nsvg__parseLineCap(value); + } else if (strcmp(name, "stroke-linejoin") == 0) { + attr->strokeLineJoin = nsvg__parseLineJoin(value); + } else if (strcmp(name, "fill-rule") == 0) { + attr->fillRule = nsvg__parseFillRule(value); + } else if (strcmp(name, "font-size") == 0) { + attr->fontSize = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p)); + } else if (strcmp(name, "transform") == 0) { + nsvg__parseTransform(xform, value); + nsvg__xformPremultiply(attr->xform, xform); + } else if (strcmp(name, "stop-color") == 0) { + attr->stopColor = nsvg__parseColor(value); + } else if (strcmp(name, "stop-opacity") == 0) { + attr->stopOpacity = nsvg__parseOpacity(value); + } else if (strcmp(name, "offset") == 0) { + attr->stopOffset = nsvg__parseCoordinate(p, value, 0.0f, 1.0f); + } else if (strcmp(name, "id") == 0) { + strncpy(attr->id, value, 63); + attr->id[63] = '\0'; + } else { + return 0; + } + return 1; +} + +static int nsvg__parseNameValue(NSVGparser* p, const char* start, const char* end) +{ + const char* str; + const char* val; + char name[512]; + char value[512]; + int n; + + str = start; + while (str < end && *str != ':') ++str; + + val = str; + + // Right Trim + while (str > start && (*str == ':' || nsvg__isspace(*str))) --str; + ++str; + + n = (int)(str - start); + if (n > 511) n = 511; + if (n) memcpy(name, start, n); + name[n] = 0; + + while (val < end && (*val == ':' || nsvg__isspace(*val))) ++val; + + n = (int)(end - val); + if (n > 511) n = 511; + if (n) memcpy(value, val, n); + value[n] = 0; + + return nsvg__parseAttr(p, name, value); +} + +static void nsvg__parseStyle(NSVGparser* p, const char* str) +{ + const char* start; + const char* end; + + while (*str) { + // Left Trim + while(*str && nsvg__isspace(*str)) ++str; + start = str; + while(*str && *str != ';') ++str; + end = str; + + // Right Trim + while (end > start && (*end == ';' || nsvg__isspace(*end))) --end; + ++end; + + nsvg__parseNameValue(p, start, end); + if (*str) ++str; + } +} + +static void nsvg__parseAttribs(NSVGparser* p, const char** attr) +{ + int i; + for (i = 0; attr[i]; i += 2) + { + if (strcmp(attr[i], "style") == 0) + nsvg__parseStyle(p, attr[i + 1]); + else + nsvg__parseAttr(p, attr[i], attr[i + 1]); + } +} + +static int nsvg__getArgsPerElement(char cmd) +{ + switch (cmd) { + case 'v': + case 'V': + case 'h': + case 'H': + return 1; + case 'm': + case 'M': + case 'l': + case 'L': + case 't': + case 'T': + return 2; + case 'q': + case 'Q': + case 's': + case 'S': + return 4; + case 'c': + case 'C': + return 6; + case 'a': + case 'A': + return 7; + } + return 0; +} + +static void nsvg__pathMoveTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + if (rel) { + *cpx += args[0]; + *cpy += args[1]; + } else { + *cpx = args[0]; + *cpy = args[1]; + } + nsvg__moveTo(p, *cpx, *cpy); +} + +static void nsvg__pathLineTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + if (rel) { + *cpx += args[0]; + *cpy += args[1]; + } else { + *cpx = args[0]; + *cpy = args[1]; + } + nsvg__lineTo(p, *cpx, *cpy); +} + +static void nsvg__pathHLineTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + if (rel) + *cpx += args[0]; + else + *cpx = args[0]; + nsvg__lineTo(p, *cpx, *cpy); +} + +static void nsvg__pathVLineTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + if (rel) + *cpy += args[0]; + else + *cpy = args[0]; + nsvg__lineTo(p, *cpx, *cpy); +} + +static void nsvg__pathCubicBezTo(NSVGparser* p, float* cpx, float* cpy, + float* cpx2, float* cpy2, float* args, int rel) +{ + float x2, y2, cx1, cy1, cx2, cy2; + + if (rel) { + cx1 = *cpx + args[0]; + cy1 = *cpy + args[1]; + cx2 = *cpx + args[2]; + cy2 = *cpy + args[3]; + x2 = *cpx + args[4]; + y2 = *cpy + args[5]; + } else { + cx1 = args[0]; + cy1 = args[1]; + cx2 = args[2]; + cy2 = args[3]; + x2 = args[4]; + y2 = args[5]; + } + + nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2); + + *cpx2 = cx2; + *cpy2 = cy2; + *cpx = x2; + *cpy = y2; +} + +static void nsvg__pathCubicBezShortTo(NSVGparser* p, float* cpx, float* cpy, + float* cpx2, float* cpy2, float* args, int rel) +{ + float x1, y1, x2, y2, cx1, cy1, cx2, cy2; + + x1 = *cpx; + y1 = *cpy; + if (rel) { + cx2 = *cpx + args[0]; + cy2 = *cpy + args[1]; + x2 = *cpx + args[2]; + y2 = *cpy + args[3]; + } else { + cx2 = args[0]; + cy2 = args[1]; + x2 = args[2]; + y2 = args[3]; + } + + cx1 = 2*x1 - *cpx2; + cy1 = 2*y1 - *cpy2; + + nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2); + + *cpx2 = cx2; + *cpy2 = cy2; + *cpx = x2; + *cpy = y2; +} + +static void nsvg__pathQuadBezTo(NSVGparser* p, float* cpx, float* cpy, + float* cpx2, float* cpy2, float* args, int rel) +{ + float x1, y1, x2, y2, cx, cy; + float cx1, cy1, cx2, cy2; + + x1 = *cpx; + y1 = *cpy; + if (rel) { + cx = *cpx + args[0]; + cy = *cpy + args[1]; + x2 = *cpx + args[2]; + y2 = *cpy + args[3]; + } else { + cx = args[0]; + cy = args[1]; + x2 = args[2]; + y2 = args[3]; + } + + // Convert to cubic bezier + cx1 = x1 + 2.0f/3.0f*(cx - x1); + cy1 = y1 + 2.0f/3.0f*(cy - y1); + cx2 = x2 + 2.0f/3.0f*(cx - x2); + cy2 = y2 + 2.0f/3.0f*(cy - y2); + + nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2); + + *cpx2 = cx; + *cpy2 = cy; + *cpx = x2; + *cpy = y2; +} + +static void nsvg__pathQuadBezShortTo(NSVGparser* p, float* cpx, float* cpy, + float* cpx2, float* cpy2, float* args, int rel) +{ + float x1, y1, x2, y2, cx, cy; + float cx1, cy1, cx2, cy2; + + x1 = *cpx; + y1 = *cpy; + if (rel) { + x2 = *cpx + args[0]; + y2 = *cpy + args[1]; + } else { + x2 = args[0]; + y2 = args[1]; + } + + cx = 2*x1 - *cpx2; + cy = 2*y1 - *cpy2; + + // Convert to cubix bezier + cx1 = x1 + 2.0f/3.0f*(cx - x1); + cy1 = y1 + 2.0f/3.0f*(cy - y1); + cx2 = x2 + 2.0f/3.0f*(cx - x2); + cy2 = y2 + 2.0f/3.0f*(cy - y2); + + nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2); + + *cpx2 = cx; + *cpy2 = cy; + *cpx = x2; + *cpy = y2; +} + +static float nsvg__sqr(float x) { return x*x; } +static float nsvg__vmag(float x, float y) { return sqrtf(x*x + y*y); } + +static float nsvg__vecrat(float ux, float uy, float vx, float vy) +{ + return (ux*vx + uy*vy) / (nsvg__vmag(ux,uy) * nsvg__vmag(vx,vy)); +} + +static float nsvg__vecang(float ux, float uy, float vx, float vy) +{ + float r = nsvg__vecrat(ux,uy, vx,vy); + if (r < -1.0f) r = -1.0f; + if (r > 1.0f) r = 1.0f; + return ((ux*vy < uy*vx) ? -1.0f : 1.0f) * acosf(r); +} + +static void nsvg__pathArcTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel) +{ + // Ported from canvg (https://code.google.com/p/canvg/) + float rx, ry, rotx; + float x1, y1, x2, y2, cx, cy, dx, dy, d; + float x1p, y1p, cxp, cyp, s, sa, sb; + float ux, uy, vx, vy, a1, da; + float x, y, tanx, tany, a, px = 0, py = 0, ptanx = 0, ptany = 0, t[6]; + float sinrx, cosrx; + int fa, fs; + int i, ndivs; + float hda, kappa; + + rx = fabsf(args[0]); // y radius + ry = fabsf(args[1]); // x radius + rotx = args[2] / 180.0f * NSVG_PI; // x rotation engle + fa = fabsf(args[3]) > 1e-6 ? 1 : 0; // Large arc + fs = fabsf(args[4]) > 1e-6 ? 1 : 0; // Sweep direction + x1 = *cpx; // start point + y1 = *cpy; + if (rel) { // end point + x2 = *cpx + args[5]; + y2 = *cpy + args[6]; + } else { + x2 = args[5]; + y2 = args[6]; + } + + dx = x1 - x2; + dy = y1 - y2; + d = sqrtf(dx*dx + dy*dy); + if (d < 1e-6f || rx < 1e-6f || ry < 1e-6f) { + // The arc degenerates to a line + nsvg__lineTo(p, x2, y2); + *cpx = x2; + *cpy = y2; + return; + } + + sinrx = sinf(rotx); + cosrx = cosf(rotx); + + // Convert to center point parameterization. + // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes + // 1) Compute x1', y1' + x1p = cosrx * dx / 2.0f + sinrx * dy / 2.0f; + y1p = -sinrx * dx / 2.0f + cosrx * dy / 2.0f; + d = nsvg__sqr(x1p)/nsvg__sqr(rx) + nsvg__sqr(y1p)/nsvg__sqr(ry); + if (d > 1) { + d = sqrtf(d); + rx *= d; + ry *= d; + } + // 2) Compute cx', cy' + s = 0.0f; + sa = nsvg__sqr(rx)*nsvg__sqr(ry) - nsvg__sqr(rx)*nsvg__sqr(y1p) - nsvg__sqr(ry)*nsvg__sqr(x1p); + sb = nsvg__sqr(rx)*nsvg__sqr(y1p) + nsvg__sqr(ry)*nsvg__sqr(x1p); + if (sa < 0.0f) sa = 0.0f; + if (sb > 0.0f) + s = sqrtf(sa / sb); + if (fa == fs) + s = -s; + cxp = s * rx * y1p / ry; + cyp = s * -ry * x1p / rx; + + // 3) Compute cx,cy from cx',cy' + cx = (x1 + x2)/2.0f + cosrx*cxp - sinrx*cyp; + cy = (y1 + y2)/2.0f + sinrx*cxp + cosrx*cyp; + + // 4) Calculate theta1, and delta theta. + ux = (x1p - cxp) / rx; + uy = (y1p - cyp) / ry; + vx = (-x1p - cxp) / rx; + vy = (-y1p - cyp) / ry; + a1 = nsvg__vecang(1.0f,0.0f, ux,uy); // Initial angle + da = nsvg__vecang(ux,uy, vx,vy); // Delta angle + +// if (vecrat(ux,uy,vx,vy) <= -1.0f) da = NSVG_PI; +// if (vecrat(ux,uy,vx,vy) >= 1.0f) da = 0; + + if (fa) { + // Choose large arc + if (da > 0.0f) + da = da - 2*NSVG_PI; + else + da = 2*NSVG_PI + da; + } + + // Approximate the arc using cubic spline segments. + t[0] = cosrx; t[1] = sinrx; + t[2] = -sinrx; t[3] = cosrx; + t[4] = cx; t[5] = cy; + + // Split arc into max 90 degree segments. + // The loop assumes an iteration per end point (including start and end), this +1. + ndivs = (int)(fabsf(da) / (NSVG_PI*0.5f) + 1.0f); + hda = (da / (float)ndivs) / 2.0f; + kappa = fabsf(4.0f / 3.0f * (1.0f - cosf(hda)) / sinf(hda)); + if (da < 0.0f) + kappa = -kappa; + + for (i = 0; i <= ndivs; i++) { + a = a1 + da * (i/(float)ndivs); + dx = cosf(a); + dy = sinf(a); + nsvg__xformPoint(&x, &y, dx*rx, dy*ry, t); // position + nsvg__xformVec(&tanx, &tany, -dy*rx * kappa, dx*ry * kappa, t); // tangent + if (i > 0) + nsvg__cubicBezTo(p, px+ptanx,py+ptany, x-tanx, y-tany, x, y); + px = x; + py = y; + ptanx = tanx; + ptany = tany; + } + + *cpx = x2; + *cpy = y2; +} + +static void nsvg__parsePath(NSVGparser* p, const char** attr) +{ + const char* s = NULL; + char cmd = '\0'; + float args[10]; + int nargs; + int rargs = 0; + float cpx, cpy, cpx2, cpy2; + const char* tmp[4]; + char closedFlag; + int i; + char item[64]; + + for (i = 0; attr[i]; i += 2) { + if (strcmp(attr[i], "d") == 0) { + s = attr[i + 1]; + } else { + tmp[0] = attr[i]; + tmp[1] = attr[i + 1]; + tmp[2] = 0; + tmp[3] = 0; + nsvg__parseAttribs(p, tmp); + } + } + + if (s) { + nsvg__resetPath(p); + cpx = 0; cpy = 0; + cpx2 = 0; cpy2 = 0; + closedFlag = 0; + nargs = 0; + + while (*s) { + s = nsvg__getNextPathItem(s, item); + if (!*item) break; + if (nsvg__isnum(item[0])) { + if (nargs < 10) + args[nargs++] = (float)atof(item); + if (nargs >= rargs) { + switch (cmd) { + case 'm': + case 'M': + nsvg__pathMoveTo(p, &cpx, &cpy, args, cmd == 'm' ? 1 : 0); + // Moveto can be followed by multiple coordinate pairs, + // which should be treated as linetos. + cmd = (cmd == 'm') ? 'l' : 'L'; + rargs = nsvg__getArgsPerElement(cmd); + cpx2 = cpx; cpy2 = cpy; + break; + case 'l': + case 'L': + nsvg__pathLineTo(p, &cpx, &cpy, args, cmd == 'l' ? 1 : 0); + cpx2 = cpx; cpy2 = cpy; + break; + case 'H': + case 'h': + nsvg__pathHLineTo(p, &cpx, &cpy, args, cmd == 'h' ? 1 : 0); + cpx2 = cpx; cpy2 = cpy; + break; + case 'V': + case 'v': + nsvg__pathVLineTo(p, &cpx, &cpy, args, cmd == 'v' ? 1 : 0); + cpx2 = cpx; cpy2 = cpy; + break; + case 'C': + case 'c': + nsvg__pathCubicBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 'c' ? 1 : 0); + break; + case 'S': + case 's': + nsvg__pathCubicBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 's' ? 1 : 0); + break; + case 'Q': + case 'q': + nsvg__pathQuadBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 'q' ? 1 : 0); + break; + case 'T': + case 't': + nsvg__pathQuadBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 't' ? 1 : 0); + break; + case 'A': + case 'a': + nsvg__pathArcTo(p, &cpx, &cpy, args, cmd == 'a' ? 1 : 0); + cpx2 = cpx; cpy2 = cpy; + break; + default: + if (nargs >= 2) { + cpx = args[nargs-2]; + cpy = args[nargs-1]; + cpx2 = cpx; cpy2 = cpy; + } + break; + } + nargs = 0; + } + } else { + cmd = item[0]; + rargs = nsvg__getArgsPerElement(cmd); + if (cmd == 'M' || cmd == 'm') { + // Commit path. + if (p->npts > 0) + nsvg__addPath(p, closedFlag); + // Start new subpath. + nsvg__resetPath(p); + closedFlag = 0; + nargs = 0; + } else if (cmd == 'Z' || cmd == 'z') { + closedFlag = 1; + // Commit path. + if (p->npts > 0) { + // Move current point to first point + cpx = p->pts[0]; + cpy = p->pts[1]; + cpx2 = cpx; cpy2 = cpy; + nsvg__addPath(p, closedFlag); + } + // Start new subpath. + nsvg__resetPath(p); + nsvg__moveTo(p, cpx, cpy); + closedFlag = 0; + nargs = 0; + } + } + } + // Commit path. + if (p->npts) + nsvg__addPath(p, closedFlag); + } + + nsvg__addShape(p); +} + +static void nsvg__parseRect(NSVGparser* p, const char** attr) +{ + float x = 0.0f; + float y = 0.0f; + float w = 0.0f; + float h = 0.0f; + float rx = -1.0f; // marks not set + float ry = -1.0f; + int i; + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "x") == 0) x = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "y") == 0) y = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + if (strcmp(attr[i], "width") == 0) w = nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualWidth(p)); + if (strcmp(attr[i], "height") == 0) h = nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualHeight(p)); + if (strcmp(attr[i], "rx") == 0) rx = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualWidth(p))); + if (strcmp(attr[i], "ry") == 0) ry = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualHeight(p))); + } + } + + if (rx < 0.0f && ry > 0.0f) rx = ry; + if (ry < 0.0f && rx > 0.0f) ry = rx; + if (rx < 0.0f) rx = 0.0f; + if (ry < 0.0f) ry = 0.0f; + if (rx > w/2.0f) rx = w/2.0f; + if (ry > h/2.0f) ry = h/2.0f; + + if (w != 0.0f && h != 0.0f) { + nsvg__resetPath(p); + + if (rx < 0.00001f || ry < 0.0001f) { + nsvg__moveTo(p, x, y); + nsvg__lineTo(p, x+w, y); + nsvg__lineTo(p, x+w, y+h); + nsvg__lineTo(p, x, y+h); + } else { + // Rounded rectangle + nsvg__moveTo(p, x+rx, y); + nsvg__lineTo(p, x+w-rx, y); + nsvg__cubicBezTo(p, x+w-rx*(1-NSVG_KAPPA90), y, x+w, y+ry*(1-NSVG_KAPPA90), x+w, y+ry); + nsvg__lineTo(p, x+w, y+h-ry); + nsvg__cubicBezTo(p, x+w, y+h-ry*(1-NSVG_KAPPA90), x+w-rx*(1-NSVG_KAPPA90), y+h, x+w-rx, y+h); + nsvg__lineTo(p, x+rx, y+h); + nsvg__cubicBezTo(p, x+rx*(1-NSVG_KAPPA90), y+h, x, y+h-ry*(1-NSVG_KAPPA90), x, y+h-ry); + nsvg__lineTo(p, x, y+ry); + nsvg__cubicBezTo(p, x, y+ry*(1-NSVG_KAPPA90), x+rx*(1-NSVG_KAPPA90), y, x+rx, y); + } + + nsvg__addPath(p, 1); + + nsvg__addShape(p); + } +} + +static void nsvg__parseCircle(NSVGparser* p, const char** attr) +{ + float cx = 0.0f; + float cy = 0.0f; + float r = 0.0f; + int i; + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "cx") == 0) cx = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "cy") == 0) cy = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + if (strcmp(attr[i], "r") == 0) r = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualLength(p))); + } + } + + if (r > 0.0f) { + nsvg__resetPath(p); + + nsvg__moveTo(p, cx+r, cy); + nsvg__cubicBezTo(p, cx+r, cy+r*NSVG_KAPPA90, cx+r*NSVG_KAPPA90, cy+r, cx, cy+r); + nsvg__cubicBezTo(p, cx-r*NSVG_KAPPA90, cy+r, cx-r, cy+r*NSVG_KAPPA90, cx-r, cy); + nsvg__cubicBezTo(p, cx-r, cy-r*NSVG_KAPPA90, cx-r*NSVG_KAPPA90, cy-r, cx, cy-r); + nsvg__cubicBezTo(p, cx+r*NSVG_KAPPA90, cy-r, cx+r, cy-r*NSVG_KAPPA90, cx+r, cy); + + nsvg__addPath(p, 1); + + nsvg__addShape(p); + } +} + +static void nsvg__parseEllipse(NSVGparser* p, const char** attr) +{ + float cx = 0.0f; + float cy = 0.0f; + float rx = 0.0f; + float ry = 0.0f; + int i; + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "cx") == 0) cx = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "cy") == 0) cy = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + if (strcmp(attr[i], "rx") == 0) rx = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualWidth(p))); + if (strcmp(attr[i], "ry") == 0) ry = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualHeight(p))); + } + } + + if (rx > 0.0f && ry > 0.0f) { + + nsvg__resetPath(p); + + nsvg__moveTo(p, cx+rx, cy); + nsvg__cubicBezTo(p, cx+rx, cy+ry*NSVG_KAPPA90, cx+rx*NSVG_KAPPA90, cy+ry, cx, cy+ry); + nsvg__cubicBezTo(p, cx-rx*NSVG_KAPPA90, cy+ry, cx-rx, cy+ry*NSVG_KAPPA90, cx-rx, cy); + nsvg__cubicBezTo(p, cx-rx, cy-ry*NSVG_KAPPA90, cx-rx*NSVG_KAPPA90, cy-ry, cx, cy-ry); + nsvg__cubicBezTo(p, cx+rx*NSVG_KAPPA90, cy-ry, cx+rx, cy-ry*NSVG_KAPPA90, cx+rx, cy); + + nsvg__addPath(p, 1); + + nsvg__addShape(p); + } +} + +static void nsvg__parseLine(NSVGparser* p, const char** attr) +{ + float x1 = 0.0; + float y1 = 0.0; + float x2 = 0.0; + float y2 = 0.0; + int i; + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "x1") == 0) x1 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "y1") == 0) y1 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + if (strcmp(attr[i], "x2") == 0) x2 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p)); + if (strcmp(attr[i], "y2") == 0) y2 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p)); + } + } + + nsvg__resetPath(p); + + nsvg__moveTo(p, x1, y1); + nsvg__lineTo(p, x2, y2); + + nsvg__addPath(p, 0); + + nsvg__addShape(p); +} + +static void nsvg__parsePoly(NSVGparser* p, const char** attr, int closeFlag) +{ + int i; + const char* s; + float args[2]; + int nargs, npts = 0; + char item[64]; + + nsvg__resetPath(p); + + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "points") == 0) { + s = attr[i + 1]; + nargs = 0; + while (*s) { + s = nsvg__getNextPathItem(s, item); + args[nargs++] = (float)atof(item); + if (nargs >= 2) { + if (npts == 0) + nsvg__moveTo(p, args[0], args[1]); + else + nsvg__lineTo(p, args[0], args[1]); + nargs = 0; + npts++; + } + } + } + } + } + + nsvg__addPath(p, (char)closeFlag); + + nsvg__addShape(p); +} + +static void nsvg__parseSVG(NSVGparser* p, const char** attr) +{ + int i; + for (i = 0; attr[i]; i += 2) { + if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "width") == 0) { + p->image->width = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 1.0f); + } else if (strcmp(attr[i], "height") == 0) { + p->image->height = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 1.0f); + } else if (strcmp(attr[i], "viewBox") == 0) { + sscanf(attr[i + 1], "%f%*[%%, \t]%f%*[%%, \t]%f%*[%%, \t]%f", &p->viewMinx, &p->viewMiny, &p->viewWidth, &p->viewHeight); + } else if (strcmp(attr[i], "preserveAspectRatio") == 0) { + if (strstr(attr[i + 1], "none") != 0) { + // No uniform scaling + p->alignType = NSVG_ALIGN_NONE; + } else { + // Parse X align + if (strstr(attr[i + 1], "xMin") != 0) + p->alignX = NSVG_ALIGN_MIN; + else if (strstr(attr[i + 1], "xMid") != 0) + p->alignX = NSVG_ALIGN_MID; + else if (strstr(attr[i + 1], "xMax") != 0) + p->alignX = NSVG_ALIGN_MAX; + // Parse X align + if (strstr(attr[i + 1], "yMin") != 0) + p->alignY = NSVG_ALIGN_MIN; + else if (strstr(attr[i + 1], "yMid") != 0) + p->alignY = NSVG_ALIGN_MID; + else if (strstr(attr[i + 1], "yMax") != 0) + p->alignY = NSVG_ALIGN_MAX; + // Parse meet/slice + p->alignType = NSVG_ALIGN_MEET; + if (strstr(attr[i + 1], "slice") != 0) + p->alignType = NSVG_ALIGN_SLICE; + } + } + } + } +} + +static void nsvg__parseGradient(NSVGparser* p, const char** attr, char type) +{ + int i; + NSVGgradientData* grad = (NSVGgradientData*)malloc(sizeof(NSVGgradientData)); + if (grad == NULL) return; + memset(grad, 0, sizeof(NSVGgradientData)); + grad->units = NSVG_OBJECT_SPACE; + grad->type = type; + if (grad->type == NSVG_PAINT_LINEAR_GRADIENT) { + grad->linear.x1 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT); + grad->linear.y1 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT); + grad->linear.x2 = nsvg__coord(100.0f, NSVG_UNITS_PERCENT); + grad->linear.y2 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT); + } else if (grad->type == NSVG_PAINT_RADIAL_GRADIENT) { + grad->radial.cx = nsvg__coord(50.0f, NSVG_UNITS_PERCENT); + grad->radial.cy = nsvg__coord(50.0f, NSVG_UNITS_PERCENT); + grad->radial.r = nsvg__coord(50.0f, NSVG_UNITS_PERCENT); + } + + nsvg__xformIdentity(grad->xform); + + for (i = 0; attr[i]; i += 2) { + if (strcmp(attr[i], "id") == 0) { + strncpy(grad->id, attr[i+1], 63); + grad->id[63] = '\0'; + } else if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) { + if (strcmp(attr[i], "gradientUnits") == 0) { + if (strcmp(attr[i+1], "objectBoundingBox") == 0) + grad->units = NSVG_OBJECT_SPACE; + else + grad->units = NSVG_USER_SPACE; + } else if (strcmp(attr[i], "gradientTransform") == 0) { + nsvg__parseTransform(grad->xform, attr[i + 1]); + } else if (strcmp(attr[i], "cx") == 0) { + grad->radial.cx = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "cy") == 0) { + grad->radial.cy = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "r") == 0) { + grad->radial.r = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "fx") == 0) { + grad->radial.fx = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "fy") == 0) { + grad->radial.fy = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "x1") == 0) { + grad->linear.x1 = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "y1") == 0) { + grad->linear.y1 = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "x2") == 0) { + grad->linear.x2 = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "y2") == 0) { + grad->linear.y2 = nsvg__parseCoordinateRaw(attr[i + 1]); + } else if (strcmp(attr[i], "spreadMethod") == 0) { + if (strcmp(attr[i+1], "pad") == 0) + grad->spread = NSVG_SPREAD_PAD; + else if (strcmp(attr[i+1], "reflect") == 0) + grad->spread = NSVG_SPREAD_REFLECT; + else if (strcmp(attr[i+1], "repeat") == 0) + grad->spread = NSVG_SPREAD_REPEAT; + } else if (strcmp(attr[i], "xlink:href") == 0) { + const char *href = attr[i+1]; + strncpy(grad->ref, href+1, 62); + grad->ref[62] = '\0'; + } + } + } + + grad->next = p->gradients; + p->gradients = grad; +} + +static void nsvg__parseGradientStop(NSVGparser* p, const char** attr) +{ + NSVGattrib* curAttr = nsvg__getAttr(p); + NSVGgradientData* grad; + NSVGgradientStop* stop; + int i, idx; + + curAttr->stopOffset = 0; + curAttr->stopColor = 0; + curAttr->stopOpacity = 1.0f; + + for (i = 0; attr[i]; i += 2) { + nsvg__parseAttr(p, attr[i], attr[i + 1]); + } + + // Add stop to the last gradient. + grad = p->gradients; + if (grad == NULL) return; + + grad->nstops++; + grad->stops = (NSVGgradientStop*)realloc(grad->stops, sizeof(NSVGgradientStop)*grad->nstops); + if (grad->stops == NULL) return; + + // Insert + idx = grad->nstops-1; + for (i = 0; i < grad->nstops-1; i++) { + if (curAttr->stopOffset < grad->stops[i].offset) { + idx = i; + break; + } + } + if (idx != grad->nstops-1) { + for (i = grad->nstops-1; i > idx; i--) + grad->stops[i] = grad->stops[i-1]; + } + + stop = &grad->stops[idx]; + stop->color = curAttr->stopColor; + stop->color |= (unsigned int)(curAttr->stopOpacity*255) << 24; + stop->offset = curAttr->stopOffset; +} + +static void nsvg__startElement(void* ud, const char* el, const char** attr) +{ + NSVGparser* p = (NSVGparser*)ud; + + if (p->defsFlag) { + // Skip everything but gradients in defs + if (strcmp(el, "linearGradient") == 0) { + nsvg__parseGradient(p, attr, NSVG_PAINT_LINEAR_GRADIENT); + } else if (strcmp(el, "radialGradient") == 0) { + nsvg__parseGradient(p, attr, NSVG_PAINT_RADIAL_GRADIENT); + } else if (strcmp(el, "stop") == 0) { + nsvg__parseGradientStop(p, attr); + } + return; + } + + if (strcmp(el, "g") == 0) { + nsvg__pushAttr(p); + nsvg__parseAttribs(p, attr); + } else if (strcmp(el, "path") == 0) { + if (p->pathFlag) // Do not allow nested paths. + return; + nsvg__pushAttr(p); + nsvg__parsePath(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "rect") == 0) { + nsvg__pushAttr(p); + nsvg__parseRect(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "circle") == 0) { + nsvg__pushAttr(p); + nsvg__parseCircle(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "ellipse") == 0) { + nsvg__pushAttr(p); + nsvg__parseEllipse(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "line") == 0) { + nsvg__pushAttr(p); + nsvg__parseLine(p, attr); + nsvg__popAttr(p); + } else if (strcmp(el, "polyline") == 0) { + nsvg__pushAttr(p); + nsvg__parsePoly(p, attr, 0); + nsvg__popAttr(p); + } else if (strcmp(el, "polygon") == 0) { + nsvg__pushAttr(p); + nsvg__parsePoly(p, attr, 1); + nsvg__popAttr(p); + } else if (strcmp(el, "linearGradient") == 0) { + nsvg__parseGradient(p, attr, NSVG_PAINT_LINEAR_GRADIENT); + } else if (strcmp(el, "radialGradient") == 0) { + nsvg__parseGradient(p, attr, NSVG_PAINT_RADIAL_GRADIENT); + } else if (strcmp(el, "stop") == 0) { + nsvg__parseGradientStop(p, attr); + } else if (strcmp(el, "defs") == 0) { + p->defsFlag = 1; + } else if (strcmp(el, "svg") == 0) { + nsvg__parseSVG(p, attr); + } +} + +static void nsvg__endElement(void* ud, const char* el) +{ + NSVGparser* p = (NSVGparser*)ud; + + if (strcmp(el, "g") == 0) { + nsvg__popAttr(p); + } else if (strcmp(el, "path") == 0) { + p->pathFlag = 0; + } else if (strcmp(el, "defs") == 0) { + p->defsFlag = 0; + } +} + +static void nsvg__content(void* ud, const char* s) +{ + NSVG_NOTUSED(ud); + NSVG_NOTUSED(s); + // empty +} + +static void nsvg__imageBounds(NSVGparser* p, float* bounds) +{ + NSVGshape* shape; + shape = p->image->shapes; + if (shape == NULL) { + bounds[0] = bounds[1] = bounds[2] = bounds[3] = 0.0; + return; + } + bounds[0] = shape->bounds[0]; + bounds[1] = shape->bounds[1]; + bounds[2] = shape->bounds[2]; + bounds[3] = shape->bounds[3]; + for (shape = shape->next; shape != NULL; shape = shape->next) { + bounds[0] = nsvg__minf(bounds[0], shape->bounds[0]); + bounds[1] = nsvg__minf(bounds[1], shape->bounds[1]); + bounds[2] = nsvg__maxf(bounds[2], shape->bounds[2]); + bounds[3] = nsvg__maxf(bounds[3], shape->bounds[3]); + } +} + +static float nsvg__viewAlign(float content, float container, int type) +{ + if (type == NSVG_ALIGN_MIN) + return 0; + else if (type == NSVG_ALIGN_MAX) + return container - content; + // mid + return (container - content) * 0.5f; +} + +static void nsvg__scaleGradient(NSVGgradient* grad, float tx, float ty, float sx, float sy) +{ + grad->xform[0] *= sx; + grad->xform[1] *= sx; + grad->xform[2] *= sy; + grad->xform[3] *= sy; + grad->xform[4] += tx*sx; + grad->xform[5] += ty*sx; +} + +static void nsvg__scaleToViewbox(NSVGparser* p, const char* units) +{ + NSVGshape* shape; + NSVGpath* path; + float tx, ty, sx, sy, us, bounds[4], t[6], avgs; + int i; + float* pt; + + // Guess image size if not set completely. + nsvg__imageBounds(p, bounds); + + if (p->viewWidth == 0) { + if (p->image->width > 0) { + p->viewWidth = p->image->width; + } else { + p->viewMinx = bounds[0]; + p->viewWidth = bounds[2] - bounds[0]; + } + } + if (p->viewHeight == 0) { + if (p->image->height > 0) { + p->viewHeight = p->image->height; + } else { + p->viewMiny = bounds[1]; + p->viewHeight = bounds[3] - bounds[1]; + } + } + if (p->image->width <= 1) + p->image->width = p->viewWidth; + if (p->image->height <= 1) + p->image->height = p->viewHeight; + + tx = -p->viewMinx; + ty = -p->viewMiny; + sx = p->viewWidth > 0 ? p->image->width / p->viewWidth : 0; + sy = p->viewHeight > 0 ? p->image->height / p->viewHeight : 0; + // Unit scaling + us = 1.0f / nsvg__convertToPixels(p, nsvg__coord(1.0f, nsvg__parseUnits(units)), 0.0f, 1.0f); + + // Fix aspect ratio + if (p->alignType == NSVG_ALIGN_MEET) { + // fit whole image into viewbox + sx = sy = nsvg__minf(sx, sy); + tx += nsvg__viewAlign(p->viewWidth*sx, p->image->width, p->alignX) / sx; + ty += nsvg__viewAlign(p->viewHeight*sy, p->image->height, p->alignY) / sy; + } else if (p->alignType == NSVG_ALIGN_SLICE) { + // fill whole viewbox with image + sx = sy = nsvg__maxf(sx, sy); + tx += nsvg__viewAlign(p->viewWidth*sx, p->image->width, p->alignX) / sx; + ty += nsvg__viewAlign(p->viewHeight*sy, p->image->height, p->alignY) / sy; + } + + // Transform + sx *= us; + sy *= us; + avgs = (sx+sy) / 2.0f; + for (shape = p->image->shapes; shape != NULL; shape = shape->next) { + shape->bounds[0] = (shape->bounds[0] + tx) * sx; + shape->bounds[1] = (shape->bounds[1] + ty) * sy; + shape->bounds[2] = (shape->bounds[2] + tx) * sx; + shape->bounds[3] = (shape->bounds[3] + ty) * sy; + for (path = shape->paths; path != NULL; path = path->next) { + path->bounds[0] = (path->bounds[0] + tx) * sx; + path->bounds[1] = (path->bounds[1] + ty) * sy; + path->bounds[2] = (path->bounds[2] + tx) * sx; + path->bounds[3] = (path->bounds[3] + ty) * sy; + for (i =0; i < path->npts; i++) { + pt = &path->pts[i*2]; + pt[0] = (pt[0] + tx) * sx; + pt[1] = (pt[1] + ty) * sy; + } + } + + if (shape->fill.type == NSVG_PAINT_LINEAR_GRADIENT || shape->fill.type == NSVG_PAINT_RADIAL_GRADIENT) { + nsvg__scaleGradient(shape->fill.gradient, tx,ty, sx,sy); + memcpy(t, shape->fill.gradient->xform, sizeof(float)*6); + nsvg__xformInverse(shape->fill.gradient->xform, t); + } + if (shape->stroke.type == NSVG_PAINT_LINEAR_GRADIENT || shape->stroke.type == NSVG_PAINT_RADIAL_GRADIENT) { + nsvg__scaleGradient(shape->stroke.gradient, tx,ty, sx,sy); + memcpy(t, shape->stroke.gradient->xform, sizeof(float)*6); + nsvg__xformInverse(shape->stroke.gradient->xform, t); + } + + shape->strokeWidth *= avgs; + shape->strokeDashOffset *= avgs; + for (i = 0; i < shape->strokeDashCount; i++) + shape->strokeDashArray[i] *= avgs; + } +} + +NSVGimage* nsvgParse(char* input, const char* units, float dpi) +{ + NSVGparser* p; + NSVGimage* ret = 0; + + p = nsvg__createParser(); + if (p == NULL) { + return NULL; + } + p->dpi = dpi; + + nsvg__parseXML(input, nsvg__startElement, nsvg__endElement, nsvg__content, p); + + // Scale to viewBox + nsvg__scaleToViewbox(p, units); + + ret = p->image; + p->image = NULL; + + nsvg__deleteParser(p); + + return ret; +} + +NSVGimage* nsvgParseFromFile(const char* filename, const char* units, float dpi) +{ + FILE* fp = NULL; + size_t size; + char* data = NULL; + NSVGimage* image = NULL; + + fp = fopen(filename, "rb"); + if (!fp) goto error; + fseek(fp, 0, SEEK_END); + size = ftell(fp); + fseek(fp, 0, SEEK_SET); + data = (char*)malloc(size+1); + if (data == NULL) goto error; + if (fread(data, 1, size, fp) != size) goto error; + data[size] = '\0'; // Must be null terminated. + fclose(fp); + image = nsvgParse(data, units, dpi); + free(data); + + return image; + +error: + if (fp) fclose(fp); + if (data) free(data); + if (image) nsvgDelete(image); + return NULL; +} + +void nsvgDelete(NSVGimage* image) +{ + if (image == NULL) return; + + NSVGshape *snext, *shape; + shape = image->shapes; + while (shape != NULL) { + snext = shape->next; + nsvg__deletePaths(shape->paths); + nsvg__deletePaint(&shape->fill); + nsvg__deletePaint(&shape->stroke); + free(shape); + shape = snext; + } + free(image); +} diff --git a/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvg.h b/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvg.h new file mode 100644 index 0000000..608bcd6 --- /dev/null +++ b/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvg.h @@ -0,0 +1,173 @@ +/* + * Copyright (c) 2013-14 Mikko Mononen memon@inside.org + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + * + * The SVG parser is based on Anti-Grain Geometry 2.4 SVG example + * Copyright (C) 2002-2004 Maxim Shemanarev (McSeem) (http://www.antigrain.com/) + * + * Arc calculation code based on canvg (https://code.google.com/p/canvg/) + * + * Bounding box calculation based on http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html + * + */ + +#ifndef NANOSVG_H +#define NANOSVG_H + +// NanoSVG is a simple stupid single-header-file SVG parse. The output of the parser is a list of cubic bezier shapes. +// +// The library suits well for anything from rendering scalable icons in your editor application to prototyping a game. +// +// NanoSVG supports a wide range of SVG features, but something may be missing, feel free to create a pull request! +// +// The shapes in the SVG images are transformed by the viewBox and converted to specified units. +// That is, you should get the same looking data as your designed in your favorite app. +// +// NanoSVG can return the paths in few different units. For example if you want to render an image, you may choose +// to get the paths in pixels, or if you are feeding the data into a CNC-cutter, you may want to use millimeters. +// +// The units passed to NanoVG should be one of: 'px', 'pt', 'pc' 'mm', 'cm', or 'in'. +// DPI (dots-per-inch) controls how the unit conversion is done. +// +// If you don't know or care about the units stuff, "px" and 96 should get you going. + + +/* Example Usage: + // Load + SNVGImage* image; + image = nsvgParseFromFile("test.svg", "px", 96); + printf("size: %f x %f\n", image->width, image->height); + // Use... + for (shape = image->shapes; shape != NULL; shape = shape->next) { + for (path = shape->paths; path != NULL; path = path->next) { + for (i = 0; i < path->npts-1; i += 3) { + float* p = &path->pts[i*2]; + drawCubicBez(p[0],p[1], p[2],p[3], p[4],p[5], p[6],p[7]); + } + } + } + // Delete + nsvgDelete(image); +*/ + +enum NSVGpaintType { + NSVG_PAINT_NONE = 0, + NSVG_PAINT_COLOR = 1, + NSVG_PAINT_LINEAR_GRADIENT = 2, + NSVG_PAINT_RADIAL_GRADIENT = 3, +}; + +enum NSVGspreadType { + NSVG_SPREAD_PAD = 0, + NSVG_SPREAD_REFLECT = 1, + NSVG_SPREAD_REPEAT = 2, +}; + +enum NSVGlineJoin { + NSVG_JOIN_MITER = 0, + NSVG_JOIN_ROUND = 1, + NSVG_JOIN_BEVEL = 2, +}; + +enum NSVGlineCap { + NSVG_CAP_BUTT = 0, + NSVG_CAP_ROUND = 1, + NSVG_CAP_SQUARE = 2, +}; + +enum NSVGfillRule { + NSVG_FILLRULE_NONZERO = 0, + NSVG_FILLRULE_EVENODD = 1, +}; + +enum NSVGflags { + NSVG_FLAGS_VISIBLE = 0x01 +}; + +typedef struct NSVGgradientStop { + unsigned int color; + float offset; +} NSVGgradientStop; + +typedef struct NSVGgradient { + float xform[6]; + char spread; + float fx, fy; + int nstops; + NSVGgradientStop stops[1]; +} NSVGgradient; + +typedef struct NSVGpaint { + char type; + union { + unsigned int color; + NSVGgradient* gradient; + }; +} NSVGpaint; + +typedef struct NSVGpath +{ + float* pts; // Cubic bezier points: x0,y0, [cpx1,cpx1,cpx2,cpy2,x1,y1], ... + int npts; // Total number of bezier points. + char closed; // Flag indicating if shapes should be treated as closed. + float bounds[4]; // Tight bounding box of the shape [minx,miny,maxx,maxy]. + struct NSVGpath* next; // Pointer to next path, or NULL if last element. +} NSVGpath; + +typedef struct NSVGshape +{ + char id[64]; // Optional 'id' attr of the shape or its group + NSVGpaint fill; // Fill paint + NSVGpaint stroke; // Stroke paint + float opacity; // Opacity of the shape. + float strokeWidth; // Stroke width (scaled). + float strokeDashOffset; // Stroke dash offset (scaled). + float strokeDashArray[8]; // Stroke dash array (scaled). + char strokeDashCount; // Number of dash values in dash array. + char strokeLineJoin; // Stroke join type. + char strokeLineCap; // Stroke cap type. + char fillRule; // Fill rule, see NSVGfillRule. + unsigned char flags; // Logical or of NSVG_FLAGS_* flags + float bounds[4]; // Tight bounding box of the shape [minx,miny,maxx,maxy]. + NSVGpath* paths; // Linked list of paths in the image. + struct NSVGshape* next; // Pointer to next shape, or NULL if last element. +} NSVGshape; + +typedef struct NSVGimage +{ + float width; // Width of the image. + float height; // Height of the image. + NSVGshape* shapes; // Linked list of shapes in the image. +} NSVGimage; + +// Parses SVG file from a file, returns SVG image as paths. +NSVGimage* nsvgParseFromFile(const char* filename, const char* units, float dpi); + +// Parses SVG file from a null terminated string, returns SVG image as paths. +// Important note: changes the string. +NSVGimage* nsvgParse(char* input, const char* units, float dpi); + +// Deletes list of paths. +void nsvgDelete(NSVGimage* image); + +#endif // NANOSVG_H + +/** + * In the original software, The nanosvg implementation was followed here. + * We have moved the implementation to nanosvg.cc. + */ diff --git a/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvgrast.cc b/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvgrast.cc new file mode 100644 index 0000000..73bfd2c --- /dev/null +++ b/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvgrast.cc @@ -0,0 +1,1312 @@ +/* + * Copyright (c) 2013-14 Mikko Mononen memon@inside.org + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + * + * The polygon rasterization is heavily based on stb_truetype rasterizer + * by Sean Barrett - http://nothings.org/ + * + */ + +#include "nanosvgrast.h" + +/** + * In the original software, The nanosvgrast implementation was included in the header file. + * We have separated the implementation to source file here. + */ + +#include +#include +#include +#include + +#define NSVG__SUBSAMPLES 5 +#define NSVG__FIXSHIFT 10 +#define NSVG__FIX (1 << NSVG__FIXSHIFT) +#define NSVG__FIXMASK (NSVG__FIX-1) +#define NSVG__MEMPAGE_SIZE 1024 + +typedef struct NSVGedge { + float x0,y0, x1,y1; + int dir; + struct NSVGedge* next; +} NSVGedge; + +typedef struct NSVGpoint { + float x, y; + float dx, dy; + float len; + float dmx, dmy; + unsigned char flags; +} NSVGpoint; + +typedef struct NSVGactiveEdge { + int x,dx; + float ey; + int dir; + struct NSVGactiveEdge *next; +} NSVGactiveEdge; + +typedef struct NSVGmemPage { + unsigned char mem[NSVG__MEMPAGE_SIZE]; + int size; + struct NSVGmemPage* next; +} NSVGmemPage; + +typedef struct NSVGcachedPaint { + char type; + char spread; + float xform[6]; + unsigned int colors[256]; +} NSVGcachedPaint; + +struct NSVGrasterizer +{ + float px, py; + + float tessTol; + float distTol; + + NSVGedge* edges; + int nedges; + int cedges; + + NSVGpoint* points; + int npoints; + int cpoints; + + NSVGpoint* points2; + int npoints2; + int cpoints2; + + NSVGactiveEdge* freelist; + NSVGmemPage* pages; + NSVGmemPage* curpage; + + unsigned char* scanline; + int cscanline; + + unsigned char* bitmap; + int width, height, stride; +}; + +NSVGrasterizer* nsvgCreateRasterizer() +{ + NSVGrasterizer* r = (NSVGrasterizer*)malloc(sizeof(NSVGrasterizer)); + if (r == NULL) goto error; + memset(r, 0, sizeof(NSVGrasterizer)); + + r->tessTol = 0.25f; + r->distTol = 0.01f; + + return r; + +error: + nsvgDeleteRasterizer(r); + return NULL; +} + +void nsvgDeleteRasterizer(NSVGrasterizer* r) +{ + if (r == NULL) return; + + NSVGmemPage* p; + p = r->pages; + while (p != NULL) { + NSVGmemPage* next = p->next; + free(p); + p = next; + } + + if (r->edges) free(r->edges); + if (r->points) free(r->points); + if (r->points2) free(r->points2); + if (r->scanline) free(r->scanline); + + free(r); +} + +static NSVGmemPage* nsvg__nextPage(NSVGrasterizer* r, NSVGmemPage* cur) +{ + NSVGmemPage *newp; + + // If using existing chain, return the next page in chain + if (cur != NULL && cur->next != NULL) { + return cur->next; + } + + // Alloc new page + newp = (NSVGmemPage*)malloc(sizeof(NSVGmemPage)); + if (newp == NULL) return NULL; + memset(newp, 0, sizeof(NSVGmemPage)); + + // Add to linked list + if (cur != NULL) + cur->next = newp; + else + r->pages = newp; + + return newp; +} + +static void nsvg__resetPool(NSVGrasterizer* r) +{ + NSVGmemPage* p = r->pages; + while (p != NULL) { + p->size = 0; + p = p->next; + } + r->curpage = r->pages; +} + +static unsigned char* nsvg__alloc(NSVGrasterizer* r, int size) +{ + unsigned char* buf; + if (size > NSVG__MEMPAGE_SIZE) return NULL; + if (r->curpage == NULL || r->curpage->size+size > NSVG__MEMPAGE_SIZE) { + r->curpage = nsvg__nextPage(r, r->curpage); + } + buf = &r->curpage->mem[r->curpage->size]; + r->curpage->size += size; + return buf; +} + +static int nsvg__ptEquals(float x1, float y1, float x2, float y2, float tol) +{ + float dx = x2 - x1; + float dy = y2 - y1; + return dx*dx + dy*dy < tol*tol; +} + +static void nsvg__addPathPoint(NSVGrasterizer* r, float x, float y, int flags) +{ + NSVGpoint* pt; + + if (r->npoints > 0) { + pt = &r->points[r->npoints-1]; + if (nsvg__ptEquals(pt->x,pt->y, x,y, r->distTol)) { + pt->flags |= flags; + return; + } + } + + if (r->npoints+1 > r->cpoints) { + r->cpoints = r->cpoints > 0 ? r->cpoints * 2 : 64; + r->points = (NSVGpoint*)realloc(r->points, sizeof(NSVGpoint) * r->cpoints); + if (r->points == NULL) return; + } + + pt = &r->points[r->npoints]; + pt->x = x; + pt->y = y; + pt->flags = (unsigned char)flags; + r->npoints++; +} + +static void nsvg__appendPathPoint(NSVGrasterizer* r, NSVGpoint pt) +{ + if (r->npoints+1 > r->cpoints) { + r->cpoints = r->cpoints > 0 ? r->cpoints * 2 : 64; + r->points = (NSVGpoint*)realloc(r->points, sizeof(NSVGpoint) * r->cpoints); + if (r->points == NULL) return; + } + r->points[r->npoints] = pt; + r->npoints++; +} + +static void nsvg__duplicatePoints(NSVGrasterizer* r) +{ + if (r->npoints > r->cpoints2) { + r->cpoints2 = r->npoints; + r->points2 = (NSVGpoint*)realloc(r->points2, sizeof(NSVGpoint) * r->cpoints2); + if (r->points2 == NULL) return; + } + + memcpy(r->points2, r->points, sizeof(NSVGpoint) * r->npoints); + r->npoints2 = r->npoints; +} + +static void nsvg__addEdge(NSVGrasterizer* r, float x0, float y0, float x1, float y1) +{ + NSVGedge* e; + + // Skip horizontal edges + if (y0 == y1) + return; + + if (r->nedges+1 > r->cedges) { + r->cedges = r->cedges > 0 ? r->cedges * 2 : 64; + r->edges = (NSVGedge*)realloc(r->edges, sizeof(NSVGedge) * r->cedges); + if (r->edges == NULL) return; + } + + e = &r->edges[r->nedges]; + r->nedges++; + + if (y0 < y1) { + e->x0 = x0; + e->y0 = y0; + e->x1 = x1; + e->y1 = y1; + e->dir = 1; + } else { + e->x0 = x1; + e->y0 = y1; + e->x1 = x0; + e->y1 = y0; + e->dir = -1; + } +} + +static float nsvg__normalize(float *x, float* y) +{ + float d = sqrtf((*x)*(*x) + (*y)*(*y)); + if (d > 1e-6f) { + float id = 1.0f / d; + *x *= id; + *y *= id; + } + return d; +} + +static float nsvg__absf(float x) { return x < 0 ? -x : x; } + +static void nsvg__flattenCubicBez(NSVGrasterizer* r, + float x1, float y1, float x2, float y2, + float x3, float y3, float x4, float y4, + int level, int type) +{ + float x12,y12,x23,y23,x34,y34,x123,y123,x234,y234,x1234,y1234; + float dx,dy,d2,d3; + + if (level > 10) return; + + x12 = (x1+x2)*0.5f; + y12 = (y1+y2)*0.5f; + x23 = (x2+x3)*0.5f; + y23 = (y2+y3)*0.5f; + x34 = (x3+x4)*0.5f; + y34 = (y3+y4)*0.5f; + x123 = (x12+x23)*0.5f; + y123 = (y12+y23)*0.5f; + + dx = x4 - x1; + dy = y4 - y1; + d2 = nsvg__absf(((x2 - x4) * dy - (y2 - y4) * dx)); + d3 = nsvg__absf(((x3 - x4) * dy - (y3 - y4) * dx)); + + if ((d2 + d3)*(d2 + d3) < r->tessTol * (dx*dx + dy*dy)) { + nsvg__addPathPoint(r, x4, y4, type); + return; + } + + x234 = (x23+x34)*0.5f; + y234 = (y23+y34)*0.5f; + x1234 = (x123+x234)*0.5f; + y1234 = (y123+y234)*0.5f; + + nsvg__flattenCubicBez(r, x1,y1, x12,y12, x123,y123, x1234,y1234, level+1, 0); + nsvg__flattenCubicBez(r, x1234,y1234, x234,y234, x34,y34, x4,y4, level+1, type); +} + +static void nsvg__flattenShape(NSVGrasterizer* r, NSVGshape* shape, float scale) +{ + int i, j; + NSVGpath* path; + + for (path = shape->paths; path != NULL; path = path->next) { + r->npoints = 0; + // Flatten path + nsvg__addPathPoint(r, path->pts[0]*scale, path->pts[1]*scale, 0); + for (i = 0; i < path->npts-1; i += 3) { + float* p = &path->pts[i*2]; + nsvg__flattenCubicBez(r, p[0]*scale,p[1]*scale, p[2]*scale,p[3]*scale, p[4]*scale,p[5]*scale, p[6]*scale,p[7]*scale, 0, 0); + } + // Close path + nsvg__addPathPoint(r, path->pts[0]*scale, path->pts[1]*scale, 0); + // Build edges + for (i = 0, j = r->npoints-1; i < r->npoints; j = i++) + nsvg__addEdge(r, r->points[j].x, r->points[j].y, r->points[i].x, r->points[i].y); + } +} + +enum NSVGpointFlags +{ + NSVG_PT_CORNER = 0x01, + NSVG_PT_BEVEL = 0x02, + NSVG_PT_LEFT = 0x04, +}; + +static void nsvg__initClosed(NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth) +{ + float w = lineWidth * 0.5f; + float dx = p1->x - p0->x; + float dy = p1->y - p0->y; + float len = nsvg__normalize(&dx, &dy); + float px = p0->x + dx*len*0.5f, py = p0->y + dy*len*0.5f; + float dlx = dy, dly = -dx; + float lx = px - dlx*w, ly = py - dly*w; + float rx = px + dlx*w, ry = py + dly*w; + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static void nsvg__buttCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p, float dx, float dy, float lineWidth, int connect) +{ + float w = lineWidth * 0.5f; + float px = p->x, py = p->y; + float dlx = dy, dly = -dx; + float lx = px - dlx*w, ly = py - dly*w; + float rx = px + dlx*w, ry = py + dly*w; + + nsvg__addEdge(r, lx, ly, rx, ry); + + if (connect) { + nsvg__addEdge(r, left->x, left->y, lx, ly); + nsvg__addEdge(r, rx, ry, right->x, right->y); + } + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static void nsvg__squareCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p, float dx, float dy, float lineWidth, int connect) +{ + float w = lineWidth * 0.5f; + float px = p->x - dx*w, py = p->y - dy*w; + float dlx = dy, dly = -dx; + float lx = px - dlx*w, ly = py - dly*w; + float rx = px + dlx*w, ry = py + dly*w; + + nsvg__addEdge(r, lx, ly, rx, ry); + + if (connect) { + nsvg__addEdge(r, left->x, left->y, lx, ly); + nsvg__addEdge(r, rx, ry, right->x, right->y); + } + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +#ifndef NSVG_PI +#define NSVG_PI (3.14159265358979323846264338327f) +#endif + +static void nsvg__roundCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p, float dx, float dy, float lineWidth, int ncap, int connect) +{ + int i; + float w = lineWidth * 0.5f; + float px = p->x, py = p->y; + float dlx = dy, dly = -dx; + float lx = 0, ly = 0, rx = 0, ry = 0, prevx = 0, prevy = 0; + + for (i = 0; i < ncap; i++) { + float a = i/(float)(ncap-1)*NSVG_PI; + float ax = cosf(a) * w, ay = sinf(a) * w; + float x = px - dlx*ax - dx*ay; + float y = py - dly*ax - dy*ay; + + if (i > 0) + nsvg__addEdge(r, prevx, prevy, x, y); + + prevx = x; + prevy = y; + + if (i == 0) { + lx = x; ly = y; + } else if (i == ncap-1) { + rx = x; ry = y; + } + } + + if (connect) { + nsvg__addEdge(r, left->x, left->y, lx, ly); + nsvg__addEdge(r, rx, ry, right->x, right->y); + } + + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static void nsvg__bevelJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth) +{ + float w = lineWidth * 0.5f; + float dlx0 = p0->dy, dly0 = -p0->dx; + float dlx1 = p1->dy, dly1 = -p1->dx; + float lx0 = p1->x - (dlx0 * w), ly0 = p1->y - (dly0 * w); + float rx0 = p1->x + (dlx0 * w), ry0 = p1->y + (dly0 * w); + float lx1 = p1->x - (dlx1 * w), ly1 = p1->y - (dly1 * w); + float rx1 = p1->x + (dlx1 * w), ry1 = p1->y + (dly1 * w); + + nsvg__addEdge(r, lx0, ly0, left->x, left->y); + nsvg__addEdge(r, lx1, ly1, lx0, ly0); + + nsvg__addEdge(r, right->x, right->y, rx0, ry0); + nsvg__addEdge(r, rx0, ry0, rx1, ry1); + + left->x = lx1; left->y = ly1; + right->x = rx1; right->y = ry1; +} + +static void nsvg__miterJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth) +{ + float w = lineWidth * 0.5f; + float dlx0 = p0->dy, dly0 = -p0->dx; + float dlx1 = p1->dy, dly1 = -p1->dx; + float lx0, rx0, lx1, rx1; + float ly0, ry0, ly1, ry1; + + if (p1->flags & NSVG_PT_LEFT) { + lx0 = lx1 = p1->x - p1->dmx * w; + ly0 = ly1 = p1->y - p1->dmy * w; + nsvg__addEdge(r, lx1, ly1, left->x, left->y); + + rx0 = p1->x + (dlx0 * w); + ry0 = p1->y + (dly0 * w); + rx1 = p1->x + (dlx1 * w); + ry1 = p1->y + (dly1 * w); + nsvg__addEdge(r, right->x, right->y, rx0, ry0); + nsvg__addEdge(r, rx0, ry0, rx1, ry1); + } else { + lx0 = p1->x - (dlx0 * w); + ly0 = p1->y - (dly0 * w); + lx1 = p1->x - (dlx1 * w); + ly1 = p1->y - (dly1 * w); + nsvg__addEdge(r, lx0, ly0, left->x, left->y); + nsvg__addEdge(r, lx1, ly1, lx0, ly0); + + rx0 = rx1 = p1->x + p1->dmx * w; + ry0 = ry1 = p1->y + p1->dmy * w; + nsvg__addEdge(r, right->x, right->y, rx1, ry1); + } + + left->x = lx1; left->y = ly1; + right->x = rx1; right->y = ry1; +} + +static void nsvg__roundJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth, int ncap) +{ + int i, n; + float w = lineWidth * 0.5f; + float dlx0 = p0->dy, dly0 = -p0->dx; + float dlx1 = p1->dy, dly1 = -p1->dx; + float a0 = atan2f(dly0, dlx0); + float a1 = atan2f(dly1, dlx1); + float da = a1 - a0; + float lx, ly, rx, ry; + + if (da < NSVG_PI) da += NSVG_PI*2; + if (da > NSVG_PI) da -= NSVG_PI*2; + + n = (int)ceilf((nsvg__absf(da) / NSVG_PI) * ncap); + if (n < 2) n = 2; + if (n > ncap) n = ncap; + + lx = left->x; + ly = left->y; + rx = right->x; + ry = right->y; + + for (i = 0; i < n; i++) { + float u = i/(float)(n-1); + float a = a0 + u*da; + float ax = cosf(a) * w, ay = sinf(a) * w; + float lx1 = p1->x - ax, ly1 = p1->y - ay; + float rx1 = p1->x + ax, ry1 = p1->y + ay; + + nsvg__addEdge(r, lx1, ly1, lx, ly); + nsvg__addEdge(r, rx, ry, rx1, ry1); + + lx = lx1; ly = ly1; + rx = rx1; ry = ry1; + } + + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static void nsvg__straightJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p1, float lineWidth) +{ + float w = lineWidth * 0.5f; + float lx = p1->x - (p1->dmx * w), ly = p1->y - (p1->dmy * w); + float rx = p1->x + (p1->dmx * w), ry = p1->y + (p1->dmy * w); + + nsvg__addEdge(r, lx, ly, left->x, left->y); + nsvg__addEdge(r, right->x, right->y, rx, ry); + + left->x = lx; left->y = ly; + right->x = rx; right->y = ry; +} + +static int nsvg__curveDivs(float r, float arc, float tol) +{ + float da = acosf(r / (r + tol)) * 2.0f; + int divs = (int)ceilf(arc / da); + if (divs < 2) divs = 2; + return divs; +} + +static void nsvg__expandStroke(NSVGrasterizer* r, NSVGpoint* points, int npoints, int closed, int lineJoin, int lineCap, float lineWidth) +{ + int ncap = nsvg__curveDivs(lineWidth*0.5f, NSVG_PI, r->tessTol); // Calculate divisions per half circle. + NSVGpoint left = {0,0,0,0,0,0,0,0}, right = {0,0,0,0,0,0,0,0}, firstLeft = {0,0,0,0,0,0,0,0}, firstRight = {0,0,0,0,0,0,0,0}; + NSVGpoint* p0, *p1; + int j, s, e; + + // Build stroke edges + if (closed) { + // Looping + p0 = &points[npoints-1]; + p1 = &points[0]; + s = 0; + e = npoints; + } else { + // Add cap + p0 = &points[0]; + p1 = &points[1]; + s = 1; + e = npoints-1; + } + + if (closed) { + nsvg__initClosed(&left, &right, p0, p1, lineWidth); + firstLeft = left; + firstRight = right; + } else { + // Add cap + float dx = p1->x - p0->x; + float dy = p1->y - p0->y; + nsvg__normalize(&dx, &dy); + if (lineCap == NSVG_CAP_BUTT) + nsvg__buttCap(r, &left, &right, p0, dx, dy, lineWidth, 0); + else if (lineCap == NSVG_CAP_SQUARE) + nsvg__squareCap(r, &left, &right, p0, dx, dy, lineWidth, 0); + else if (lineCap == NSVG_CAP_ROUND) + nsvg__roundCap(r, &left, &right, p0, dx, dy, lineWidth, ncap, 0); + } + + for (j = s; j < e; ++j) { + if (p1->flags & NSVG_PT_CORNER) { + if (lineJoin == NSVG_JOIN_ROUND) + nsvg__roundJoin(r, &left, &right, p0, p1, lineWidth, ncap); + else if (lineJoin == NSVG_JOIN_BEVEL || (p1->flags & NSVG_PT_BEVEL)) + nsvg__bevelJoin(r, &left, &right, p0, p1, lineWidth); + else + nsvg__miterJoin(r, &left, &right, p0, p1, lineWidth); + } else { + nsvg__straightJoin(r, &left, &right, p1, lineWidth); + } + p0 = p1++; + } + + if (closed) { + // Loop it + nsvg__addEdge(r, firstLeft.x, firstLeft.y, left.x, left.y); + nsvg__addEdge(r, right.x, right.y, firstRight.x, firstRight.y); + } else { + // Add cap + float dx = p1->x - p0->x; + float dy = p1->y - p0->y; + nsvg__normalize(&dx, &dy); + if (lineCap == NSVG_CAP_BUTT) + nsvg__buttCap(r, &right, &left, p1, -dx, -dy, lineWidth, 1); + else if (lineCap == NSVG_CAP_SQUARE) + nsvg__squareCap(r, &right, &left, p1, -dx, -dy, lineWidth, 1); + else if (lineCap == NSVG_CAP_ROUND) + nsvg__roundCap(r, &right, &left, p1, -dx, -dy, lineWidth, ncap, 1); + } +} + +static void nsvg__prepareStroke(NSVGrasterizer* r, float miterLimit, int lineJoin) +{ + int i, j; + NSVGpoint* p0, *p1; + + p0 = &r->points[r->npoints-1]; + p1 = &r->points[0]; + for (i = 0; i < r->npoints; i++) { + // Calculate segment direction and length + p0->dx = p1->x - p0->x; + p0->dy = p1->y - p0->y; + p0->len = nsvg__normalize(&p0->dx, &p0->dy); + // Advance + p0 = p1++; + } + + // calculate joins + p0 = &r->points[r->npoints-1]; + p1 = &r->points[0]; + for (j = 0; j < r->npoints; j++) { + float dlx0, dly0, dlx1, dly1, dmr2, cross; + dlx0 = p0->dy; + dly0 = -p0->dx; + dlx1 = p1->dy; + dly1 = -p1->dx; + // Calculate extrusions + p1->dmx = (dlx0 + dlx1) * 0.5f; + p1->dmy = (dly0 + dly1) * 0.5f; + dmr2 = p1->dmx*p1->dmx + p1->dmy*p1->dmy; + if (dmr2 > 0.000001f) { + float s2 = 1.0f / dmr2; + if (s2 > 600.0f) { + s2 = 600.0f; + } + p1->dmx *= s2; + p1->dmy *= s2; + } + + // Clear flags, but keep the corner. + p1->flags = (p1->flags & NSVG_PT_CORNER) ? NSVG_PT_CORNER : 0; + + // Keep track of left turns. + cross = p1->dx * p0->dy - p0->dx * p1->dy; + if (cross > 0.0f) + p1->flags |= NSVG_PT_LEFT; + + // Check to see if the corner needs to be beveled. + if (p1->flags & NSVG_PT_CORNER) { + if ((dmr2 * miterLimit*miterLimit) < 1.0f || lineJoin == NSVG_JOIN_BEVEL || lineJoin == NSVG_JOIN_ROUND) { + p1->flags |= NSVG_PT_BEVEL; + } + } + + p0 = p1++; + } +} + +static void nsvg__flattenShapeStroke(NSVGrasterizer* r, NSVGshape* shape, float scale) +{ + int i, j, closed; + NSVGpath* path; + NSVGpoint* p0, *p1; + float miterLimit = 4; + int lineJoin = shape->strokeLineJoin; + int lineCap = shape->strokeLineCap; + float lineWidth = shape->strokeWidth * scale; + + for (path = shape->paths; path != NULL; path = path->next) { + // Flatten path + r->npoints = 0; + nsvg__addPathPoint(r, path->pts[0]*scale, path->pts[1]*scale, NSVG_PT_CORNER); + for (i = 0; i < path->npts-1; i += 3) { + float* p = &path->pts[i*2]; + nsvg__flattenCubicBez(r, p[0]*scale,p[1]*scale, p[2]*scale,p[3]*scale, p[4]*scale,p[5]*scale, p[6]*scale,p[7]*scale, 0, NSVG_PT_CORNER); + } + if (r->npoints < 2) + continue; + + closed = path->closed; + + // If the first and last points are the same, remove the last, mark as closed path. + p0 = &r->points[r->npoints-1]; + p1 = &r->points[0]; + if (nsvg__ptEquals(p0->x,p0->y, p1->x,p1->y, r->distTol)) { + r->npoints--; + p0 = &r->points[r->npoints-1]; + closed = 1; + } + + if (shape->strokeDashCount > 0) { + int idash = 0, dashState = 1; + float totalDist = 0, dashLen, allDashLen, dashOffset; + NSVGpoint cur; + + if (closed) + nsvg__appendPathPoint(r, r->points[0]); + + // Duplicate points -> points2. + nsvg__duplicatePoints(r); + + r->npoints = 0; + cur = r->points2[0]; + nsvg__appendPathPoint(r, cur); + + // Figure out dash offset. + allDashLen = 0; + for (j = 0; j < shape->strokeDashCount; j++) + allDashLen += shape->strokeDashArray[j]; + if (shape->strokeDashCount & 1) + allDashLen *= 2.0f; + // Find location inside pattern + dashOffset = fmodf(shape->strokeDashOffset, allDashLen); + if (dashOffset < 0.0f) + dashOffset += allDashLen; + + while (dashOffset > shape->strokeDashArray[idash]) { + dashOffset -= shape->strokeDashArray[idash]; + idash = (idash + 1) % shape->strokeDashCount; + } + dashLen = (shape->strokeDashArray[idash] - dashOffset) * scale; + + for (j = 1; j < r->npoints2; ) { + float dx = r->points2[j].x - cur.x; + float dy = r->points2[j].y - cur.y; + float dist = sqrtf(dx*dx + dy*dy); + + if ((totalDist + dist) > dashLen) { + // Calculate intermediate point + float d = (dashLen - totalDist) / dist; + float x = cur.x + dx * d; + float y = cur.y + dy * d; + nsvg__addPathPoint(r, x, y, NSVG_PT_CORNER); + + // Stroke + if (r->npoints > 1 && dashState) { + nsvg__prepareStroke(r, miterLimit, lineJoin); + nsvg__expandStroke(r, r->points, r->npoints, 0, lineJoin, lineCap, lineWidth); + } + // Advance dash pattern + dashState = !dashState; + idash = (idash+1) % shape->strokeDashCount; + dashLen = shape->strokeDashArray[idash] * scale; + // Restart + cur.x = x; + cur.y = y; + cur.flags = NSVG_PT_CORNER; + totalDist = 0.0f; + r->npoints = 0; + nsvg__appendPathPoint(r, cur); + } else { + totalDist += dist; + cur = r->points2[j]; + nsvg__appendPathPoint(r, cur); + j++; + } + } + // Stroke any leftover path + if (r->npoints > 1 && dashState) + nsvg__expandStroke(r, r->points, r->npoints, 0, lineJoin, lineCap, lineWidth); + } else { + nsvg__prepareStroke(r, miterLimit, lineJoin); + nsvg__expandStroke(r, r->points, r->npoints, closed, lineJoin, lineCap, lineWidth); + } + } +} + +static int nsvg__cmpEdge(const void *p, const void *q) +{ + NSVGedge* a = (NSVGedge*)p; + NSVGedge* b = (NSVGedge*)q; + + if (a->y0 < b->y0) return -1; + if (a->y0 > b->y0) return 1; + return 0; +} + + +static NSVGactiveEdge* nsvg__addActive(NSVGrasterizer* r, NSVGedge* e, float startPoint) +{ + NSVGactiveEdge* z; + + if (r->freelist != NULL) { + // Restore from freelist. + z = r->freelist; + r->freelist = z->next; + } else { + // Alloc new edge. + z = (NSVGactiveEdge*)nsvg__alloc(r, sizeof(NSVGactiveEdge)); + if (z == NULL) return NULL; + } + + float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0); +// STBTT_assert(e->y0 <= start_point); + // round dx down to avoid going too far + if (dxdy < 0) + z->dx = (int)(-floorf(NSVG__FIX * -dxdy)); + else + z->dx = (int)floorf(NSVG__FIX * dxdy); + z->x = (int)floorf(NSVG__FIX * (e->x0 + dxdy * (startPoint - e->y0))); +// z->x -= off_x * FIX; + z->ey = e->y1; + z->next = 0; + z->dir = e->dir; + + return z; +} + +static void nsvg__freeActive(NSVGrasterizer* r, NSVGactiveEdge* z) +{ + z->next = r->freelist; + r->freelist = z; +} + +static void nsvg__fillScanline(unsigned char* scanline, int len, int x0, int x1, int maxWeight, int* xmin, int* xmax) +{ + int i = x0 >> NSVG__FIXSHIFT; + int j = x1 >> NSVG__FIXSHIFT; + if (i < *xmin) *xmin = i; + if (j > *xmax) *xmax = j; + if (i < len && j >= 0) { + if (i == j) { + // x0,x1 are the same pixel, so compute combined coverage + scanline[i] += (unsigned char)((x1 - x0) * maxWeight >> NSVG__FIXSHIFT); + } else { + if (i >= 0) // add antialiasing for x0 + scanline[i] += (unsigned char)(((NSVG__FIX - (x0 & NSVG__FIXMASK)) * maxWeight) >> NSVG__FIXSHIFT); + else + i = -1; // clip + + if (j < len) // add antialiasing for x1 + scanline[j] += (unsigned char)(((x1 & NSVG__FIXMASK) * maxWeight) >> NSVG__FIXSHIFT); + else + j = len; // clip + + for (++i; i < j; ++i) // fill pixels between x0 and x1 + scanline[i] += (unsigned char)maxWeight; + } + } +} + +// note: this routine clips fills that extend off the edges... ideally this +// wouldn't happen, but it could happen if the truetype glyph bounding boxes +// are wrong, or if the user supplies a too-small bitmap +static void nsvg__fillActiveEdges(unsigned char* scanline, int len, NSVGactiveEdge* e, int maxWeight, int* xmin, int* xmax, char fillRule) +{ + // non-zero winding fill + int x0 = 0, w = 0; + + if (fillRule == NSVG_FILLRULE_NONZERO) { + // Non-zero + while (e != NULL) { + if (w == 0) { + // if we're currently at zero, we need to record the edge start point + x0 = e->x; w += e->dir; + } else { + int x1 = e->x; w += e->dir; + // if we went to zero, we need to draw + if (w == 0) + nsvg__fillScanline(scanline, len, x0, x1, maxWeight, xmin, xmax); + } + e = e->next; + } + } else if (fillRule == NSVG_FILLRULE_EVENODD) { + // Even-odd + while (e != NULL) { + if (w == 0) { + // if we're currently at zero, we need to record the edge start point + x0 = e->x; w = 1; + } else { + int x1 = e->x; w = 0; + nsvg__fillScanline(scanline, len, x0, x1, maxWeight, xmin, xmax); + } + e = e->next; + } + } +} + +static float nsvg__clampf(float a, float mn, float mx) { return a < mn ? mn : (a > mx ? mx : a); } + +static unsigned int nsvg__RGBA(unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + return (r) | (g << 8) | (b << 16) | (a << 24); +} + +static unsigned int nsvg__lerpRGBA(unsigned int c0, unsigned int c1, float u) +{ + int iu = (int)(nsvg__clampf(u, 0.0f, 1.0f) * 256.0f); + int r = (((c0) & 0xff)*(256-iu) + (((c1) & 0xff)*iu)) >> 8; + int g = (((c0>>8) & 0xff)*(256-iu) + (((c1>>8) & 0xff)*iu)) >> 8; + int b = (((c0>>16) & 0xff)*(256-iu) + (((c1>>16) & 0xff)*iu)) >> 8; + int a = (((c0>>24) & 0xff)*(256-iu) + (((c1>>24) & 0xff)*iu)) >> 8; + return nsvg__RGBA((unsigned char)r, (unsigned char)g, (unsigned char)b, (unsigned char)a); +} + +static unsigned int nsvg__applyOpacity(unsigned int c, float u) +{ + int iu = (int)(nsvg__clampf(u, 0.0f, 1.0f) * 256.0f); + int r = (c) & 0xff; + int g = (c>>8) & 0xff; + int b = (c>>16) & 0xff; + int a = (((c>>24) & 0xff)*iu) >> 8; + return nsvg__RGBA((unsigned char)r, (unsigned char)g, (unsigned char)b, (unsigned char)a); +} + +static inline int nsvg__div255(int x) +{ + return ((x+1) * 257) >> 16; +} + +static void nsvg__scanlineSolid(unsigned char* dst, int count, unsigned char* cover, int x, int y, + float tx, float ty, float scale, NSVGcachedPaint* cache) +{ + + if (cache->type == NSVG_PAINT_COLOR) { + int i, cr, cg, cb, ca; + cr = cache->colors[0] & 0xff; + cg = (cache->colors[0] >> 8) & 0xff; + cb = (cache->colors[0] >> 16) & 0xff; + ca = (cache->colors[0] >> 24) & 0xff; + + for (i = 0; i < count; i++) { + int r,g,b; + int a = nsvg__div255((int)cover[0] * ca); + int ia = 255 - a; + // Premultiply + r = nsvg__div255(cr * a); + g = nsvg__div255(cg * a); + b = nsvg__div255(cb * a); + + // Blend over + r += nsvg__div255(ia * (int)dst[0]); + g += nsvg__div255(ia * (int)dst[1]); + b += nsvg__div255(ia * (int)dst[2]); + a += nsvg__div255(ia * (int)dst[3]); + + dst[0] = (unsigned char)r; + dst[1] = (unsigned char)g; + dst[2] = (unsigned char)b; + dst[3] = (unsigned char)a; + + cover++; + dst += 4; + } + } else if (cache->type == NSVG_PAINT_LINEAR_GRADIENT) { + // TODO: spread modes. + // TODO: plenty of opportunities to optimize. + float fx, fy, dx, gy; + float* t = cache->xform; + int i, cr, cg, cb, ca; + unsigned int c; + + fx = (x - tx) / scale; + fy = (y - ty) / scale; + dx = 1.0f / scale; + + for (i = 0; i < count; i++) { + int r,g,b,a,ia; + gy = fx*t[1] + fy*t[3] + t[5]; + c = cache->colors[(int)nsvg__clampf(gy*255.0f, 0, 255.0f)]; + cr = (c) & 0xff; + cg = (c >> 8) & 0xff; + cb = (c >> 16) & 0xff; + ca = (c >> 24) & 0xff; + + a = nsvg__div255((int)cover[0] * ca); + ia = 255 - a; + + // Premultiply + r = nsvg__div255(cr * a); + g = nsvg__div255(cg * a); + b = nsvg__div255(cb * a); + + // Blend over + r += nsvg__div255(ia * (int)dst[0]); + g += nsvg__div255(ia * (int)dst[1]); + b += nsvg__div255(ia * (int)dst[2]); + a += nsvg__div255(ia * (int)dst[3]); + + dst[0] = (unsigned char)r; + dst[1] = (unsigned char)g; + dst[2] = (unsigned char)b; + dst[3] = (unsigned char)a; + + cover++; + dst += 4; + fx += dx; + } + } else if (cache->type == NSVG_PAINT_RADIAL_GRADIENT) { + // TODO: spread modes. + // TODO: plenty of opportunities to optimize. + // TODO: focus (fx,fy) + float fx, fy, dx, gx, gy, gd; + float* t = cache->xform; + int i, cr, cg, cb, ca; + unsigned int c; + + fx = (x - tx) / scale; + fy = (y - ty) / scale; + dx = 1.0f / scale; + + for (i = 0; i < count; i++) { + int r,g,b,a,ia; + gx = fx*t[0] + fy*t[2] + t[4]; + gy = fx*t[1] + fy*t[3] + t[5]; + gd = sqrtf(gx*gx + gy*gy); + c = cache->colors[(int)nsvg__clampf(gd*255.0f, 0, 255.0f)]; + cr = (c) & 0xff; + cg = (c >> 8) & 0xff; + cb = (c >> 16) & 0xff; + ca = (c >> 24) & 0xff; + + a = nsvg__div255((int)cover[0] * ca); + ia = 255 - a; + + // Premultiply + r = nsvg__div255(cr * a); + g = nsvg__div255(cg * a); + b = nsvg__div255(cb * a); + + // Blend over + r += nsvg__div255(ia * (int)dst[0]); + g += nsvg__div255(ia * (int)dst[1]); + b += nsvg__div255(ia * (int)dst[2]); + a += nsvg__div255(ia * (int)dst[3]); + + dst[0] = (unsigned char)r; + dst[1] = (unsigned char)g; + dst[2] = (unsigned char)b; + dst[3] = (unsigned char)a; + + cover++; + dst += 4; + fx += dx; + } + } +} + +static void nsvg__rasterizeSortedEdges(NSVGrasterizer *r, float tx, float ty, float scale, NSVGcachedPaint* cache, char fillRule) +{ + NSVGactiveEdge *active = NULL; + int y, s; + int e = 0; + int maxWeight = (255 / NSVG__SUBSAMPLES); // weight per vertical scanline + int xmin, xmax; + + for (y = 0; y < r->height; y++) { + memset(r->scanline, 0, r->width); + xmin = r->width; + xmax = 0; + for (s = 0; s < NSVG__SUBSAMPLES; ++s) { + // find center of pixel for this scanline + float scany = y*NSVG__SUBSAMPLES + s + 0.5f; + NSVGactiveEdge **step = &active; + + // update all active edges; + // remove all active edges that terminate before the center of this scanline + while (*step) { + NSVGactiveEdge *z = *step; + if (z->ey <= scany) { + *step = z->next; // delete from list +// NSVG__assert(z->valid); + nsvg__freeActive(r, z); + } else { + z->x += z->dx; // advance to position for current scanline + step = &((*step)->next); // advance through list + } + } + + // resort the list if needed + for (;;) { + int changed = 0; + step = &active; + while (*step && (*step)->next) { + if ((*step)->x > (*step)->next->x) { + NSVGactiveEdge* t = *step; + NSVGactiveEdge* q = t->next; + t->next = q->next; + q->next = t; + *step = q; + changed = 1; + } + step = &(*step)->next; + } + if (!changed) break; + } + + // insert all edges that start before the center of this scanline -- omit ones that also end on this scanline + while (e < r->nedges && r->edges[e].y0 <= scany) { + if (r->edges[e].y1 > scany) { + NSVGactiveEdge* z = nsvg__addActive(r, &r->edges[e], scany); + if (z == NULL) break; + // find insertion point + if (active == NULL) { + active = z; + } else if (z->x < active->x) { + // insert at front + z->next = active; + active = z; + } else { + // find thing to insert AFTER + NSVGactiveEdge* p = active; + while (p->next && p->next->x < z->x) + p = p->next; + // at this point, p->next->x is NOT < z->x + z->next = p->next; + p->next = z; + } + } + e++; + } + + // now process all active edges in non-zero fashion + if (active != NULL) + nsvg__fillActiveEdges(r->scanline, r->width, active, maxWeight, &xmin, &xmax, fillRule); + } + // Blit + if (xmin < 0) xmin = 0; + if (xmax > r->width-1) xmax = r->width-1; + if (xmin <= xmax) { + nsvg__scanlineSolid(&r->bitmap[y * r->stride] + xmin*4, xmax-xmin+1, &r->scanline[xmin], xmin, y, tx,ty, scale, cache); + } + } + +} + +/** + * In the original software, an function 'static void nsvg__unpremultiplyAlpha(unsigned char* image, int w, int h, int stride)' is implemented here. + * We removed this function, as our renderer renders the pre-multiplied alpha format directly, so this process is not required. + */ + + +static void nsvg__initPaint(NSVGcachedPaint* cache, NSVGpaint* paint, float opacity) +{ + int i, j; + NSVGgradient* grad; + + cache->type = paint->type; + + if (paint->type == NSVG_PAINT_COLOR) { + cache->colors[0] = nsvg__applyOpacity(paint->color, opacity); + return; + } + + grad = paint->gradient; + + cache->spread = grad->spread; + memcpy(cache->xform, grad->xform, sizeof(float)*6); + + if (grad->nstops == 0) { + for (i = 0; i < 256; i++) + cache->colors[i] = 0; + } if (grad->nstops == 1) { + for (i = 0; i < 256; i++) + cache->colors[i] = nsvg__applyOpacity(grad->stops[i].color, opacity); + } else { + unsigned int ca, cb = 0; + float ua, ub, du, u; + int ia, ib, count; + + ca = nsvg__applyOpacity(grad->stops[0].color, opacity); + ua = nsvg__clampf(grad->stops[0].offset, 0, 1); + ub = nsvg__clampf(grad->stops[grad->nstops-1].offset, ua, 1); + ia = (int)(ua * 255.0f); + ib = (int)(ub * 255.0f); + for (i = 0; i < ia; i++) { + cache->colors[i] = ca; + } + + for (i = 0; i < grad->nstops-1; i++) { + ca = nsvg__applyOpacity(grad->stops[i].color, opacity); + cb = nsvg__applyOpacity(grad->stops[i+1].color, opacity); + ua = nsvg__clampf(grad->stops[i].offset, 0, 1); + ub = nsvg__clampf(grad->stops[i+1].offset, 0, 1); + ia = (int)(ua * 255.0f); + ib = (int)(ub * 255.0f); + count = ib - ia; + if (count <= 0) continue; + u = 0; + du = 1.0f / (float)count; + for (j = 0; j < count; j++) { + cache->colors[ia+j] = nsvg__lerpRGBA(ca,cb,u); + u += du; + } + } + + for (i = ib; i < 256; i++) + cache->colors[i] = cb; + } + +} + +void nsvgRasterize(NSVGrasterizer* r, + NSVGimage* image, float tx, float ty, float scale, + unsigned char* dst, int w, int h, int stride) +{ + NSVGshape *shape = NULL; + NSVGedge *e = NULL; + NSVGcachedPaint cache; + int i; + + r->bitmap = dst; + r->width = w; + r->height = h; + r->stride = stride; + + if (w > r->cscanline) { + r->cscanline = w; + r->scanline = (unsigned char*)realloc(r->scanline, w); + if (r->scanline == NULL) return; + } + + for (i = 0; i < h; i++) + memset(&dst[i*stride], 0, w*4); + + for (shape = image->shapes; shape != NULL; shape = shape->next) { + if (!(shape->flags & NSVG_FLAGS_VISIBLE)) + continue; + + if (shape->fill.type != NSVG_PAINT_NONE) { + nsvg__resetPool(r); + r->freelist = NULL; + r->nedges = 0; + + nsvg__flattenShape(r, shape, scale); + + // Scale and translate edges + for (i = 0; i < r->nedges; i++) { + e = &r->edges[i]; + e->x0 = tx + e->x0; + e->y0 = (ty + e->y0) * NSVG__SUBSAMPLES; + e->x1 = tx + e->x1; + e->y1 = (ty + e->y1) * NSVG__SUBSAMPLES; + } + + // Rasterize edges + qsort(r->edges, r->nedges, sizeof(NSVGedge), nsvg__cmpEdge); + + // now, traverse the scanlines and find the intersections on each scanline, use non-zero rule + nsvg__initPaint(&cache, &shape->fill, shape->opacity); + + nsvg__rasterizeSortedEdges(r, tx,ty,scale, &cache, shape->fillRule); + } + if (shape->stroke.type != NSVG_PAINT_NONE && (shape->strokeWidth * scale) > 0.01f) { + nsvg__resetPool(r); + r->freelist = NULL; + r->nedges = 0; + + nsvg__flattenShapeStroke(r, shape, scale); + +// dumpEdges(r, "edge.svg"); + + // Scale and translate edges + for (i = 0; i < r->nedges; i++) { + e = &r->edges[i]; + e->x0 = tx + e->x0; + e->y0 = (ty + e->y0) * NSVG__SUBSAMPLES; + e->x1 = tx + e->x1; + e->y1 = (ty + e->y1) * NSVG__SUBSAMPLES; + } + + // Rasterize edges + qsort(r->edges, r->nedges, sizeof(NSVGedge), nsvg__cmpEdge); + + // now, traverse the scanlines and find the intersections on each scanline, use non-zero rule + nsvg__initPaint(&cache, &shape->stroke, shape->opacity); + + nsvg__rasterizeSortedEdges(r, tx,ty,scale, &cache, NSVG_FILLRULE_NONZERO); + } + } + + /** + * In the original file, the pre-multiplied alpha format is transformed to the convertional non-pre format. + * We skip this process here, and render the pre-multiplied alpha format directly in our svg renderer. + */ + + r->bitmap = NULL; + r->width = 0; + r->height = 0; + r->stride = 0; +} diff --git a/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvgrast.h b/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvgrast.h new file mode 100644 index 0000000..3b52600 --- /dev/null +++ b/dali-toolkit/internal/controls/renderers/svg/nanosvg/nanosvgrast.h @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2013-14 Mikko Mononen memon@inside.org + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + * + * The polygon rasterization is heavily based on stb_truetype rasterizer + * by Sean Barrett - http://nothings.org/ + * + */ + +#ifndef NANOSVGRAST_H +#define NANOSVGRAST_H + +#include "nanosvg.h" + +typedef struct NSVGrasterizer NSVGrasterizer; + +/* Example Usage: + // Load SVG + struct SNVGImage* image = nsvgParseFromFile("test.svg."); + + // Create rasterizer (can be used to render multiple images). + struct NSVGrasterizer* rast = nsvgCreateRasterizer(); + // Allocate memory for image + unsigned char* img = malloc(w*h*4); + // Rasterize + nsvgRasterize(rast, image, 0,0,1, img, w, h, w*4); +*/ + +// Allocated rasterizer context. +NSVGrasterizer* nsvgCreateRasterizer(); + +// Rasterizes SVG image, returns RGBA image (premultiplied alpha) +// r - pointer to rasterizer context +// image - pointer to image to rasterize +// tx,ty - image offset (applied after scaling) +// scale - image scale +// dst - pointer to destination image data, 4 bytes per pixel (RGBA) +// w - width of the image to render +// h - height of the image to render +// stride - number of bytes per scaleline in the destination buffer +void nsvgRasterize(NSVGrasterizer* r, + NSVGimage* image, float tx, float ty, float scale, + unsigned char* dst, int w, int h, int stride); + +// Deletes rasterizer context. +void nsvgDeleteRasterizer(NSVGrasterizer*); + + +#endif // NANOSVGRAST_H + +/** + * In the original software, The nanosvgrast implementation was followed here. + * We have moved the implementation to nanosvgrast.cc. + */ diff --git a/dali-toolkit/internal/controls/renderers/svg/svg-rasterize-thread.cpp b/dali-toolkit/internal/controls/renderers/svg/svg-rasterize-thread.cpp new file mode 100644 index 0000000..9e01462 --- /dev/null +++ b/dali-toolkit/internal/controls/renderers/svg/svg-rasterize-thread.cpp @@ -0,0 +1,239 @@ +/* + * Copyright (c) 2016 Samsung Electronics Co., Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// CLASS HEADER +#include "svg-rasterize-thread.h" + +// INTERNAL INCLUDES +#include "nanosvg/nanosvgrast.h" +#include "svg-renderer.h" + +namespace +{ +const std::string TEXTURE_UNIFORM_NAME = "sTexture"; +} + +namespace Dali +{ + +namespace Toolkit +{ + +namespace Internal +{ + +RasterizingTask::RasterizingTask( SvgRenderer* svgRenderer, NSVGimage* parsedSvg, unsigned int width, unsigned int height ) +: mSvgRenderer( svgRenderer ), + mParsedSvg( parsedSvg ), + mWidth( width ), + mHeight( height ) +{ +} + +void RasterizingTask::Rasterize( NSVGrasterizer* rasterizer ) +{ + if( mWidth > 0u && mHeight > 0u ) + { + float scaleX = static_cast( mWidth ) / mParsedSvg->width; + float scaleY = static_cast( mHeight ) / mParsedSvg->height; + float scale = scaleX < scaleY ? scaleX : scaleY; + unsigned int bufferStride = mWidth*Pixel::GetBytesPerPixel( Pixel::RGBA8888 ); + + unsigned char* buffer = new unsigned char [bufferStride*mHeight]; + nsvgRasterize(rasterizer, mParsedSvg, 0.f,0.f,scale, + buffer, mWidth, mHeight, + bufferStride ); + + mPixelData = Dali::PixelData::New( buffer, mWidth, mHeight, Pixel::RGBA8888, Dali::PixelData::DELETE_ARRAY ); + } +} + +SvgRenderer* RasterizingTask::GetSvgRenderer() const +{ + return mSvgRenderer.Get(); +} + +PixelDataPtr RasterizingTask::GetPixelData() const +{ + return mPixelData; +} + +SvgRasterizeThread::SvgRasterizeThread( EventThreadCallback* trigger ) +: mTrigger( trigger ), + mIsThreadWaiting( false ) +{ + mRasterizer = nsvgCreateRasterizer(); +} + +SvgRasterizeThread::~SvgRasterizeThread() +{ + + nsvgDeleteRasterizer( mRasterizer ); + delete mTrigger; +} + +void SvgRasterizeThread::TerminateThread( SvgRasterizeThread*& thread ) +{ + if( thread ) + { + // add an empty task would stop the thread from conditional wait. + thread->AddTask( RasterizingTaskPtr() ); + // stop the thread + thread->Join(); + // delete the thread + delete thread; + thread = NULL; + } +} + +void SvgRasterizeThread::AddTask( RasterizingTaskPtr task ) +{ + bool wasEmpty = false; + + { + // Lock while adding task to the queue + ConditionalWait::ScopedLock lock( mConditionalWait ); + wasEmpty = mRasterizeTasks.empty(); + if( !wasEmpty && task != NULL) + { + // Remove the tasks with the same material. + // Older task which waiting to rasterize and apply the svg to the same material is expired. + for( std::vector< RasterizingTaskPtr >::iterator it = mRasterizeTasks.begin(), endIt = mRasterizeTasks.end(); it != endIt; ++it ) + { + if( (*it) && (*it)->GetSvgRenderer() == task->GetSvgRenderer() ) + { + mRasterizeTasks.erase( it ); + break; + } + } + } + mRasterizeTasks.push_back( task ); + } + + if( wasEmpty) + { + // wake up the image loading thread + mConditionalWait.Notify(); + } +} + +RasterizingTaskPtr SvgRasterizeThread::NextCompletedTask() +{ + // Lock while popping task out from the queue + Mutex::ScopedLock lock( mMutex ); + + if( mCompletedTasks.empty() ) + { + return RasterizingTaskPtr(); + } + + std::vector< RasterizingTaskPtr >::iterator next = mCompletedTasks.begin(); + RasterizingTaskPtr nextTask = *next; + mCompletedTasks.erase( next ); + + return nextTask; +} + +void SvgRasterizeThread::RemoveTask( SvgRenderer* renderer ) +{ + // Lock while remove task from the queue + ConditionalWait::ScopedLock lock( mConditionalWait ); + if( !mRasterizeTasks.empty() ) + { + for( std::vector< RasterizingTaskPtr >::iterator it = mRasterizeTasks.begin(), endIt = mRasterizeTasks.end(); it != endIt; ++it ) + { + if( (*it) && (*it)->GetSvgRenderer() == renderer ) + { + mRasterizeTasks.erase( it ); + break; + } + } + } +} + +void SvgRasterizeThread::DeleteImage( NSVGimage* parsedSvg ) +{ + // Lock while adding image to the delete queue + ConditionalWait::ScopedLock lock( mConditionalWait ); + + if( mIsThreadWaiting ) // no rasterization is ongoing, save to delete + { + nsvgDelete( parsedSvg ); + } + else // wait to delete until current rasterization completed. + { + mDeleteSvg.PushBack( parsedSvg ); + } +} + +RasterizingTaskPtr SvgRasterizeThread::NextTaskToProcess() +{ + // Lock while popping task out from the queue + ConditionalWait::ScopedLock lock( mConditionalWait ); + + // Delete the image here to make sure that it is not used in the nsvgRasterize() + if( !mDeleteSvg.Empty() ) + { + for( Vector< NSVGimage* >::Iterator it = mDeleteSvg.Begin(), endIt = mDeleteSvg.End(); + it != endIt; + ++it ) + { + nsvgDelete( *it ); + } + mDeleteSvg.Clear(); + } + + // conditional wait + while( mRasterizeTasks.empty() ) + { + mIsThreadWaiting = true; + mConditionalWait.Wait( lock ); + } + mIsThreadWaiting = false; + + // pop out the next task from the queue + std::vector< RasterizingTaskPtr >::iterator next = mRasterizeTasks.begin(); + RasterizingTaskPtr nextTask = *next; + mRasterizeTasks.erase( next ); + + return nextTask; +} + +void SvgRasterizeThread::AddCompletedTask( RasterizingTaskPtr task ) +{ + // Lock while adding task to the queue + Mutex::ScopedLock lock( mMutex ); + mCompletedTasks.push_back( task ); + + // wake up the main thread + mTrigger->Trigger(); +} + +void SvgRasterizeThread::Run() +{ + while( RasterizingTaskPtr task = NextTaskToProcess() ) + { + task->Rasterize( mRasterizer ); + AddCompletedTask( task ); + } +} + +} // namespace Internal + +} // namespace Toolkit + +} // namespace Dali diff --git a/dali-toolkit/internal/controls/renderers/svg/svg-rasterize-thread.h b/dali-toolkit/internal/controls/renderers/svg/svg-rasterize-thread.h new file mode 100644 index 0000000..8309674 --- /dev/null +++ b/dali-toolkit/internal/controls/renderers/svg/svg-rasterize-thread.h @@ -0,0 +1,216 @@ +#ifndef __DALI_TOOLKIT_SVG_RASTERIZE_THREAD_H__ +#define __DALI_TOOLKIT_SVG_RASTERIZE_THREAD_H__ + +/* + * Copyright (c) 2016 Samsung Electronics Co., Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +// EXTERNAL INCLUDES +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct NSVGimage; +struct NSVGrasterizer; + +namespace Dali +{ + +namespace Toolkit +{ + +namespace Internal +{ + +class SvgRenderer; +typedef IntrusivePtr< SvgRenderer > SvgRendererPtr; +class RasterizingTask; +typedef IntrusivePtr< RasterizingTask > RasterizingTaskPtr; + +/** + * The svg rasterizing tasks to be processed in the worker thread. + * + * Life cycle of a rasterizing task is as follows: + * 1. Created by SvgRenderer in the main thread + * 2. Queued in the worked thread waiting to be processed. + * 3. If this task gets its turn to do the rasterization, it triggers main thread to apply the rasterized image to material then been deleted in main thread call back + * Or if this task is been removed ( new image/size set to the renderer or actor off stage) before its turn to be processed, it then been deleted in the worker thread. + */ +class RasterizingTask : public RefObject +{ +public: + /** + * Constructor + * + * @param[in] svgRenderer The renderer which the rasterized image to be applied. + * @param[in] parsedSvg The parsed svg for rasterizing. + * Note, after the task is added to the worker thread, the worker thread takes over the ownership. + * When the image is to be deleted, delete it in the worker thread by calling SvgRasterizeThread::DeleteImage( parsedSvg ). + * @param[in] width The rasterization width. + * @param[in] height The rasterization height. + */ + RasterizingTask( SvgRenderer* svgRenderer, NSVGimage* parsedSvg, unsigned int width, unsigned int height ); + + /** + * Do the rasterization with the given rasterizer. + *@param[in] rasterizer The rasterizer that rasterize the SVG to a buffer image + */ + void Rasterize( NSVGrasterizer* rasterizer ); + + /** + * Get the svg renderer + */ + SvgRenderer* GetSvgRenderer() const; + + /** + * Get the rasterization result. + * @return The pixel data with the rasterized pixels. + */ + PixelDataPtr GetPixelData() const; + +private: + + // Undefined + RasterizingTask( const RasterizingTask& task ); + + // Undefined + RasterizingTask& operator=( const RasterizingTask& task ); + +private: + SvgRendererPtr mSvgRenderer; + PixelDataPtr mPixelData; + NSVGimage* mParsedSvg; + unsigned int mWidth; + unsigned int mHeight; +}; + + +/** + * The worker thread for SVG rasterization. + */ +class SvgRasterizeThread : public Thread +{ +public: + + /** + * Constructor. + * + * @param[in] trigger The trigger to wake up the main thread. + */ + SvgRasterizeThread( EventThreadCallback* trigger ); + + /** + * Terminate the svg rasterize thread, join and delete. + */ + static void TerminateThread( SvgRasterizeThread*& thread ); + + /** + * Add a rasterization task into the waiting queue, called by main thread. + * + * @param[in] task The task added to the queue. + */ + void AddTask( RasterizingTaskPtr task ); + + /** + * Pop the next task out from the completed queue, called by main thread. + * + * @return The next task in the completed queue. + */ + RasterizingTaskPtr NextCompletedTask(); + + /** + * Remove the task with the given material from the waiting queue, called by main thread. + * + * Typically called when the actor is put off stage, so the material is not needed anymore. + * + * @param[in] renderer The renderer pointer. + */ + void RemoveTask( SvgRenderer* renderer ); + + /** + * Delete the parsed SVG image, called by main thread. + * + * The parsed svg should be delelted in worker thread, as the main thread does not know whether a rasterization of this svg is ongoing. + * + * @param[in] parsedImage The image to be deleted + */ + void DeleteImage( NSVGimage* parsedSvg ); + +private: + + /** + * Pop the next task out from the queue. + * + * @return The next task to be processed. + */ + RasterizingTaskPtr NextTaskToProcess(); + + /** + * Add a task in to the queue + * + * @param[in] task The task added to the queue. + */ + void AddCompletedTask( RasterizingTaskPtr task ); + +protected: + + /** + * Destructor. + */ + virtual ~SvgRasterizeThread(); + + + /** + * The entry function of the worker thread. + * It fetches task from the Queue, rasterizes the image and apply to the material. + */ + virtual void Run(); + +private: + + // Undefined + SvgRasterizeThread( const SvgRasterizeThread& thread ); + + // Undefined + SvgRasterizeThread& operator=( const SvgRasterizeThread& thread ); + +private: + + std::vector mRasterizeTasks; //The queue of the tasks waiting to rasterize the SVG image + std::vector mCompletedTasks; //The queue of the tasks with the SVG rasterization completed + Vector mDeleteSvg; //The images that the event thread requested to delete + + ConditionalWait mConditionalWait; + Dali::Mutex mMutex; + EventThreadCallback* mTrigger; + + NSVGrasterizer* mRasterizer; + bool mIsThreadWaiting; +}; + +} // namespace Internal + +} // namespace Toolkit + +} // namespace Dali + +#endif /* __DALI_TOOLKIT_SVG_RASTERIZE_THREAD_H__ */ diff --git a/dali-toolkit/internal/controls/renderers/svg/svg-renderer.cpp b/dali-toolkit/internal/controls/renderers/svg/svg-renderer.cpp new file mode 100644 index 0000000..d3c128d --- /dev/null +++ b/dali-toolkit/internal/controls/renderers/svg/svg-renderer.cpp @@ -0,0 +1,256 @@ +/* + * Copyright (c) 2016 Samsung Electronics Co., Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// CLASS HEADER +#include "svg-renderer.h" + +// EXTERNAL INCLUDES +#include +#include +#include +#include +#include + +// INTERNAL INCLUDES +#include "nanosvg/nanosvg.h" +#include "svg-rasterize-thread.h" +#include +#include +#include + + +namespace +{ +const char * const RENDERER_TYPE("rendererType"); +const char * const RENDERER_TYPE_VALUE("svg"); +const char * const IMAGE_URL_NAME("imageUrl"); +const char * const UNITS("px"); + +const std::string TEXTURE_UNIFORM_NAME = "sTexture"; +const std::string ATLAS_RECT_UNIFORM_NAME = "uAtlasRect"; + +const Dali::Vector4 FULL_TEXTURE_RECT(0.f, 0.f, 1.f, 1.f); +} + +namespace Dali +{ + +namespace Toolkit +{ + +namespace Internal +{ + +SvgRenderer::SvgRenderer( RendererFactoryCache& factoryCache, ImageAtlasManager& atlasManager ) +: ControlRenderer( factoryCache ), + mAtlasRect( FULL_TEXTURE_RECT ), + mAtlasManager( atlasManager ), + mParsedImage( NULL ) +{ + // the rasterized image is with pre-multiplied alpha format + mImpl->mFlags |= Impl::IS_PREMULTIPLIED_ALPHA; +} + +SvgRenderer::~SvgRenderer() +{ + if( mParsedImage ) + { + nsvgDelete( mParsedImage ); + } +} + +bool SvgRenderer::IsSvgUrl( const std::string& url ) +{ + return url.substr( url.find_last_of(".") + 1 ) == "svg"; +} + +void SvgRenderer::DoInitialize( Actor& actor, const Property::Map& propertyMap ) +{ + Property::Value* imageURLValue = propertyMap.Find( IMAGE_URL_NAME ); + if( imageURLValue ) + { + std::string imageUrl; + if( imageURLValue->Get( imageUrl ) ) + { + SetImage( imageUrl ); + } + else + { + DALI_LOG_ERROR( "The property '%s' is not a string\n", IMAGE_URL_NAME ); + } + } +} + +void SvgRenderer::DoSetOnStage( Actor& actor ) +{ + Shader shader = ImageRenderer::GetImageShader( mFactoryCache ); + Geometry geometry = mFactoryCache.GetGeometry( RendererFactoryCache::QUAD_GEOMETRY ); + if( !geometry ) + { + geometry = mFactoryCache.CreateQuadGeometry(); + mFactoryCache.SaveGeometry( RendererFactoryCache::QUAD_GEOMETRY, geometry ); + } + Material material = Material::New( shader ); + mImpl->mRenderer = Renderer::New( geometry, material ); + + if( mImpl->mSize != Vector2::ZERO && mParsedImage ) + { + AddRasterizationTask( mImpl->mSize ); + } +} + +void SvgRenderer::DoSetOffStage( Actor& actor ) +{ + mFactoryCache.GetSVGRasterizationThread()->RemoveTask( this ); + + actor.RemoveRenderer( mImpl->mRenderer ); + mImpl->mRenderer.Reset(); +} + +void SvgRenderer::GetNaturalSize( Vector2& naturalSize ) const +{ + if( mParsedImage ) + { + naturalSize.x = mParsedImage->width; + naturalSize.y = mParsedImage->height; + } + else + { + naturalSize = Vector2::ZERO; + } +} + +void SvgRenderer::SetSize( const Vector2& size ) +{ + if(mImpl->mSize != size && mParsedImage && GetIsOnStage() ) + { + AddRasterizationTask( size ); + } + mImpl->mSize = size; +} + +void SvgRenderer::DoCreatePropertyMap( Property::Map& map ) const +{ + map.Clear(); + map.Insert( RENDERER_TYPE, RENDERER_TYPE_VALUE ); + if( !mImageUrl.empty() ) + { + map.Insert( IMAGE_URL_NAME, mImageUrl ); + } +} + +void SvgRenderer::SetImage( const std::string& imageUrl, ImageDimensions size ) +{ + if( mImageUrl != imageUrl ) + { + mImageUrl = imageUrl; + + NSVGimage* parsedImageOld = mParsedImage; + + Vector2 dpi = Stage::GetCurrent().GetDpi(); + float meanDpi = (dpi.height + dpi.width) * 0.5f; + mParsedImage = nsvgParseFromFile(mImageUrl.c_str(), UNITS, meanDpi); + + if( size.GetWidth() != 0u && size.GetHeight() != 0u) + { + mImpl->mSize.x = size.GetWidth(); + mImpl->mSize.y = size.GetHeight(); + } + + if( mImpl->mSize != Vector2::ZERO && GetIsOnStage() ) + { + AddRasterizationTask( mImpl->mSize ); + } + + mFactoryCache.GetSVGRasterizationThread()->DeleteImage( parsedImageOld ); + } +} + +void SvgRenderer::AddRasterizationTask( const Vector2& size ) +{ + if( mImpl->mRenderer && mParsedImage ) + { + unsigned int width = static_cast(size.width); + unsigned int height = static_cast( size.height ); + BufferImage image = BufferImage::New( width, height, Pixel::RGBA8888); + + RasterizingTaskPtr newTask = new RasterizingTask( this, mParsedImage, width, height ); + mFactoryCache.GetSVGRasterizationThread()->AddTask( newTask ); + } +} + +void SvgRenderer::ApplyRasterizedImage( PixelDataPtr rasterizedPixelData ) +{ + if( GetIsOnStage() ) + { + Material currentMaterial = mImpl->mRenderer.GetMaterial(); + if( mAtlasRect != FULL_TEXTURE_RECT ) + { + mAtlasManager.Remove( currentMaterial, mAtlasRect ); + } + + Vector4 atlasRect; + Material material = mAtlasManager.Add(atlasRect, rasterizedPixelData ); + if( material ) // atlasing + { + if( material != currentMaterial ) + { + mImpl->mRenderer.SetMaterial( material ); + } + mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, atlasRect ); + mAtlasRect = atlasRect; + } + else // no atlasing + { + Atlas texture = Atlas::New( rasterizedPixelData->GetWidth(), rasterizedPixelData->GetHeight() ); + texture.Upload( rasterizedPixelData, 0, 0 ); + + if( mAtlasRect == FULL_TEXTURE_RECT ) + { + material = currentMaterial; + } + else + { + material = Material::New( ImageRenderer::GetImageShader( mFactoryCache ) ); + mImpl->mRenderer.SetMaterial( material ); + + mImpl->mRenderer.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, FULL_TEXTURE_RECT ); + mAtlasRect = FULL_TEXTURE_RECT; + } + + if( material ) + { + int index = material.GetTextureIndex( TEXTURE_UNIFORM_NAME ); + if( index != -1 ) + { + material.SetTextureImage( index, texture ); + return; + } + + material.AddTexture( texture, TEXTURE_UNIFORM_NAME ); + } + } + } +} + + + +} // namespace Internal + +} // namespace Toolkit + +} // namespace Dali diff --git a/dali-toolkit/internal/controls/renderers/svg/svg-renderer.h b/dali-toolkit/internal/controls/renderers/svg/svg-renderer.h new file mode 100644 index 0000000..2c20ba1 --- /dev/null +++ b/dali-toolkit/internal/controls/renderers/svg/svg-renderer.h @@ -0,0 +1,151 @@ +#ifndef __DALI_TOOLKIT_INTERNAL_SVG_RENDERER_H__ +#define __DALI_TOOLKIT_INTERNAL_SVG_RENDERER_H__ + +/* + * Copyright (c) 2016 Samsung Electronics Co., Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// INTERNAL INCLUDES +#include +#include + +struct NSVGimage; + +namespace Dali +{ + +namespace Toolkit +{ + +namespace Internal +{ + +/** + * The renderer which renders a svg image + * + * The following property is essential + * + * | %Property Name | Type | + * |--------------------------|------------------| + * | imageUrl | STRING | + * + */ +class SvgRenderer: public ControlRenderer +{ +public: + + /** + * @brief Constructor. + * + * @param[in] factoryCache A pointer pointing to the RendererFactoryCache object + */ + SvgRenderer( RendererFactoryCache& factoryCache, ImageAtlasManager& atlasManager ); + + /** + * @brief A reference counted object may only be deleted by calling Unreference(). + */ + ~SvgRenderer(); + +public: // from ControlRenderer + + /** + * @copydoc ControlRenderer::GetNaturalSize + */ + virtual void GetNaturalSize( Vector2& naturalSize ) const; + + /** + * @copydoc ControlRenderer::SetSize + */ + virtual void SetSize( const Vector2& size ); + + /** + * @copydoc ControlRenderer::CreatePropertyMap + */ + virtual void DoCreatePropertyMap( Property::Map& map ) const; + +protected: + + /** + * @copydoc ControlRenderer::DoInitialize + */ + virtual void DoInitialize( Actor& actor, const Property::Map& propertyMap ); + + /** + * @copydoc ControlRenderer::DoSetOnStage + */ + virtual void DoSetOnStage( Actor& actor ); + + /** + * @copydoc ControlRenderer::DoSetOffStage + */ + virtual void DoSetOffStage( Actor& actor ); + +public: + + /** + * @brief Helper method to determine whether the url indicate that it is a svg image. + * + * @param [in] url The URL of the image file. + * @return true if it is a svg image + */ + static bool IsSvgUrl( const std::string& url ); + + /** + * @brief Sets the svg image of this renderer to the resource at imageUrl + * The renderer will parse the svg image once it is set. + * And rasterize it into BufferImage synchronously when the associated actor is put on stage, and destroy the BufferImage when it is off stage + * + * @param[in] imageUrl The URL to svg resource to use + */ + void SetImage( const std::string& imageUrl, ImageDimensions size = ImageDimensions() ); + + /** + * @bried Apply the rasterized image to the renderer. + * + * @param[in] rasterizedPixelData The pixel buffer with the rasterized pixels + */ + void ApplyRasterizedImage( PixelDataPtr rasterizedPixelData ); + +private: + /** + * @bried Rasterize the svg with the given size, and add it to the material. + * + * @param[in] size The target size of the SVG rasterization. + */ + void AddRasterizationTask( const Vector2& size ); + + + // Undefined + SvgRenderer( const SvgRenderer& svgRenderer ); + + // Undefined + SvgRenderer& operator=( const SvgRenderer& svgRenderer ); + +private: + Vector4 mAtlasRect; + ImageAtlasManager& mAtlasManager; + std::string mImageUrl; + NSVGimage* mParsedImage; + +}; + +} // namespace Internal + +} // namespace Toolkit + +} // namespace Dali + +#endif /* __DALI_TOOLKIT_INTERNAL_SVG_RENDERER_H__ */ diff --git a/dali-toolkit/internal/file.list b/dali-toolkit/internal/file.list index 1e037b1..31487fe 100644 --- a/dali-toolkit/internal/file.list +++ b/dali-toolkit/internal/file.list @@ -24,6 +24,10 @@ toolkit_src_files = \ $(toolkit_src_dir)/controls/renderers/gradient/linear-gradient.cpp \ $(toolkit_src_dir)/controls/renderers/gradient/radial-gradient.cpp \ $(toolkit_src_dir)/controls/renderers/gradient/gradient-renderer.cpp \ + $(toolkit_src_dir)/controls/renderers/svg/nanosvg/nanosvg.cc \ + $(toolkit_src_dir)/controls/renderers/svg/nanosvg/nanosvgrast.cc \ + $(toolkit_src_dir)/controls/renderers/svg/svg-rasterize-thread.cpp \ + $(toolkit_src_dir)/controls/renderers/svg/svg-renderer.cpp \ $(toolkit_src_dir)/controls/alignment/alignment-impl.cpp \ $(toolkit_src_dir)/controls/bloom-view/bloom-view-impl.cpp \ $(toolkit_src_dir)/controls/bubble-effect/bubble-emitter-impl.cpp \ diff --git a/dali-toolkit/internal/image-atlas/image-atlas-impl.cpp b/dali-toolkit/internal/image-atlas/image-atlas-impl.cpp index a46c6f2..ab70af4 100644 --- a/dali-toolkit/internal/image-atlas/image-atlas-impl.cpp +++ b/dali-toolkit/internal/image-atlas/image-atlas-impl.cpp @@ -138,6 +138,26 @@ bool ImageAtlas::Upload( Vector4& textureRect, return false; } +bool ImageAtlas::Upload( Vector4& textureRect, PixelDataPtr pixelData ) +{ + unsigned int packPositionX = 0; + unsigned int packPositionY = 0; + if( mPacker.Pack( pixelData->GetWidth(), pixelData->GetHeight(), packPositionX, packPositionY ) ) + { + mAtlas.Upload( pixelData, packPositionX, packPositionY ); + + // apply the half pixel correction + textureRect.x = ( static_cast( packPositionX ) +0.5f ) / mWidth; // left + textureRect.y = ( static_cast( packPositionY ) +0.5f ) / mHeight; // right + textureRect.z = ( static_cast( packPositionX + pixelData->GetWidth() )-0.5f ) / mWidth; // right + textureRect.w = ( static_cast( packPositionY + pixelData->GetHeight() )-0.5f ) / mHeight;// bottom + + return true; + } + + return false; +} + void ImageAtlas::Remove( const Vector4& textureRect ) { mPacker.DeleteBlock( static_cast(textureRect.x*mWidth), diff --git a/dali-toolkit/internal/image-atlas/image-atlas-impl.h b/dali-toolkit/internal/image-atlas/image-atlas-impl.h index c3e621c..4e3bb0b 100644 --- a/dali-toolkit/internal/image-atlas/image-atlas-impl.h +++ b/dali-toolkit/internal/image-atlas/image-atlas-impl.h @@ -67,7 +67,7 @@ public: void SetBrokenImage( const std::string& brokenImageUrl ); /** - * @copydoc Toolkit::ImageAtlas::Upload + * @copydoc Toolkit::ImageAtlas::Upload( Vector4&, const std::string&, ImageDimensions,FittingMode::Type, bool ) */ bool Upload( Vector4& textureRect, const std::string& url, @@ -76,6 +76,11 @@ public: bool orientationCorrection); /** + * @copydoc Toolkit::ImageAtlas::Upload( Vector4&, PixelDataPtr ) + */ + bool Upload( Vector4& textureRect, PixelDataPtr pixelData ); + + /** * @copydoc Toolkit::ImageAtlas::Remove */ void Remove( const Vector4& textureRect ); -- 2.7.4