| // Copyright 2015 Google Inc. All Rights Reserved. |
| // |
| // 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. |
| |
| #ifndef COBALT_RENDER_TREE_RESOURCE_PROVIDER_STUB_H_ |
| #define COBALT_RENDER_TREE_RESOURCE_PROVIDER_STUB_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/memory/aligned_memory.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "cobalt/base/polymorphic_downcast.h" |
| #include "cobalt/render_tree/font.h" |
| #include "cobalt/render_tree/font_provider.h" |
| #include "cobalt/render_tree/image.h" |
| #include "cobalt/render_tree/mesh.h" |
| #include "cobalt/render_tree/resource_provider.h" |
| |
| namespace cobalt { |
| namespace render_tree { |
| |
| namespace Internal { |
| |
| const int kDefaultTypefaceSizeInBytes = 256; |
| const render_tree::TypefaceId kDefaultTypefaceId = 0xffffffff; |
| |
| const float kRobotoAscentSizeMultiplier = 0.927734f; |
| const float kRobotoDescentSizeMultiplier = 0.244141f; |
| const float kRobotoLeadingSizeMultiplier = 0.f; |
| const float kRobotoXHeightSizeMultiplier = 0.52832f; |
| |
| const int32 kDefaultCharacter = 48; // Decimal value for '0' |
| const render_tree::GlyphIndex kDefaultGlyphIndex = 1; |
| |
| const float kDefaultCharacterRobotoGlyphWidthSizeMultiplier = 0.562012f; |
| const float kDefaultCharacterRobotoGlyphHeightSizeMultiplier = 0.7f; |
| |
| } // namespace Internal |
| |
| // The ResourceProvider defined in this file provides a bare minimum of |
| // implementation necessary. It is useful for tests that do not care about |
| // actually rasterizing render trees. For certain resources like Images, |
| // it provides introspection of internal pixel data so that tests can check |
| // that images do indeed contain the data they are expected to contain. |
| |
| // Simple in-memory pixel data. |
| class ImageDataStub : public ImageData { |
| public: |
| ImageDataStub(const math::Size& size, PixelFormat pixel_format, |
| AlphaFormat alpha_format) |
| : descriptor_(size, pixel_format, alpha_format, |
| size.width() * BytesPerPixel(pixel_format)), |
| memory_(new uint8[static_cast<size_t>(size.height() * |
| descriptor_.pitch_in_bytes)]) {} |
| |
| const ImageDataDescriptor& GetDescriptor() const OVERRIDE { |
| return descriptor_; |
| } |
| |
| uint8* GetMemory() OVERRIDE { return memory_.get(); } |
| |
| private: |
| ImageDataDescriptor descriptor_; |
| scoped_array<uint8> memory_; |
| }; |
| |
| // Simply wraps the ImageDataStub object and also makes it visible to the |
| // public so that tests can access the pixel data. |
| class ImageStub : public Image { |
| public: |
| explicit ImageStub(scoped_ptr<ImageDataStub> image_data) |
| : image_data_(image_data.Pass()) {} |
| |
| const math::Size& GetSize() const OVERRIDE { |
| return image_data_->GetDescriptor().size; |
| } |
| |
| ImageDataStub* GetImageData() { return image_data_.get(); } |
| |
| private: |
| ~ImageStub() OVERRIDE {} |
| |
| scoped_ptr<ImageDataStub> image_data_; |
| }; |
| |
| // Simple class that returns dummy data for metric information modeled on |
| // Roboto. |
| class FontStub : public Font { |
| public: |
| FontStub(const scoped_refptr<Typeface>& typeface, float font_size) |
| : typeface_(typeface), |
| font_metrics_(Internal::kRobotoAscentSizeMultiplier * font_size, |
| Internal::kRobotoDescentSizeMultiplier * font_size, |
| Internal::kRobotoLeadingSizeMultiplier * font_size, |
| Internal::kRobotoXHeightSizeMultiplier * font_size), |
| glyph_bounds_( |
| 0, |
| -std::max( |
| static_cast<int>( |
| Internal::kDefaultCharacterRobotoGlyphHeightSizeMultiplier * |
| font_size), |
| 1), |
| Internal::kDefaultCharacterRobotoGlyphWidthSizeMultiplier * |
| font_size, |
| std::max( |
| static_cast<int>( |
| Internal::kDefaultCharacterRobotoGlyphHeightSizeMultiplier * |
| font_size), |
| 1)) {} |
| |
| TypefaceId GetTypefaceId() const OVERRIDE { return typeface_->GetId(); } |
| |
| FontMetrics GetFontMetrics() const OVERRIDE { return font_metrics_; } |
| |
| GlyphIndex GetGlyphForCharacter(int32 utf32_character) OVERRIDE { |
| return typeface_->GetGlyphForCharacter(utf32_character); |
| } |
| |
| const math::RectF& GetGlyphBounds(GlyphIndex glyph) OVERRIDE { |
| UNREFERENCED_PARAMETER(glyph); |
| return glyph_bounds_; |
| } |
| |
| float GetGlyphWidth(GlyphIndex glyph) OVERRIDE { |
| UNREFERENCED_PARAMETER(glyph); |
| return glyph_bounds_.width(); |
| } |
| |
| private: |
| ~FontStub() OVERRIDE {} |
| |
| const scoped_refptr<Typeface> typeface_; |
| const FontMetrics font_metrics_; |
| math::RectF glyph_bounds_; |
| }; |
| |
| // Simple class that returns dummy data for metric information modeled on |
| // Roboto. |
| class TypefaceStub : public Typeface { |
| public: |
| explicit TypefaceStub(const void* data) { UNREFERENCED_PARAMETER(data); } |
| |
| TypefaceId GetId() const OVERRIDE { return Internal::kDefaultTypefaceId; } |
| |
| uint32 GetEstimatedSizeInBytes() const OVERRIDE { |
| return Internal::kDefaultTypefaceSizeInBytes; |
| } |
| |
| scoped_refptr<Font> CreateFontWithSize(float font_size) OVERRIDE { |
| return make_scoped_refptr(new FontStub(this, font_size)); |
| } |
| |
| GlyphIndex GetGlyphForCharacter(int32 utf32_character) OVERRIDE { |
| UNREFERENCED_PARAMETER(utf32_character); |
| return Internal::kDefaultGlyphIndex; |
| } |
| |
| private: |
| ~TypefaceStub() OVERRIDE {} |
| }; |
| |
| class RawImageMemoryStub : public RawImageMemory { |
| public: |
| typedef scoped_ptr_malloc<uint8_t, base::ScopedPtrAlignedFree> ScopedMemory; |
| |
| RawImageMemoryStub(size_t size_in_bytes, size_t alignment) |
| : size_in_bytes_(size_in_bytes) { |
| memory_ = ScopedMemory( |
| static_cast<uint8_t*>(base::AlignedAlloc(size_in_bytes, alignment))); |
| } |
| |
| size_t GetSizeInBytes() const OVERRIDE { return size_in_bytes_; } |
| |
| uint8_t* GetMemory() OVERRIDE { return memory_.get(); } |
| |
| private: |
| ~RawImageMemoryStub() OVERRIDE {} |
| |
| size_t size_in_bytes_; |
| ScopedMemory memory_; |
| }; |
| |
| class MeshStub : public render_tree::Mesh { |
| public: |
| MeshStub(scoped_ptr<std::vector<render_tree::Mesh::Vertex> > vertices, |
| render_tree::Mesh::DrawMode draw_mode) |
| : vertices_(vertices.Pass()), draw_mode_(draw_mode) {} |
| |
| uint32 GetEstimatedSizeInBytes() const OVERRIDE { |
| return static_cast<uint32>(vertices_->size() * 5 * sizeof(float) + |
| sizeof(DrawMode)); |
| } |
| |
| render_tree::Mesh::DrawMode GetDrawMode() const { return draw_mode_; } |
| const std::vector<render_tree::Mesh::Vertex>& GetVertices() const { |
| return *vertices_.get(); |
| } |
| |
| private: |
| const scoped_ptr<std::vector<render_tree::Mesh::Vertex> > vertices_; |
| const render_tree::Mesh::DrawMode draw_mode_; |
| }; |
| |
| // Return the stub versions defined above for each resource. |
| class ResourceProviderStub : public ResourceProvider { |
| public: |
| ~ResourceProviderStub() OVERRIDE {} |
| |
| void Finish() OVERRIDE {} |
| |
| bool PixelFormatSupported(PixelFormat pixel_format) OVERRIDE { |
| UNREFERENCED_PARAMETER(pixel_format); |
| return true; |
| } |
| |
| bool AlphaFormatSupported(AlphaFormat alpha_format) OVERRIDE { |
| UNREFERENCED_PARAMETER(alpha_format); |
| return true; |
| } |
| |
| scoped_ptr<ImageData> AllocateImageData(const math::Size& size, |
| PixelFormat pixel_format, |
| AlphaFormat alpha_format) OVERRIDE { |
| return scoped_ptr<ImageData>( |
| new ImageDataStub(size, pixel_format, alpha_format)); |
| } |
| |
| scoped_refptr<Image> CreateImage(scoped_ptr<ImageData> source_data) OVERRIDE { |
| scoped_ptr<ImageDataStub> skia_source_data( |
| base::polymorphic_downcast<ImageDataStub*>(source_data.release())); |
| return make_scoped_refptr(new ImageStub(skia_source_data.Pass())); |
| } |
| |
| #if SB_API_VERSION >= 3 && SB_HAS(GRAPHICS) |
| scoped_refptr<Image> CreateImageFromSbDecodeTarget( |
| SbDecodeTarget decode_target) OVERRIDE { |
| NOTREACHED(); |
| #if SB_API_VERSION < 4 |
| SbDecodeTargetDestroy(decode_target); |
| #else // 4 |
| SbDecodeTargetRelease(decode_target); |
| #endif // 4 |
| return NULL; |
| } |
| |
| bool SupportsSbDecodeTarget() OVERRIDE { return false; } |
| #endif // SB_API_VERSION >= 3 && SB_HAS(GRAPHICS) |
| |
| #if SB_HAS(GRAPHICS) |
| #if SB_API_VERSION >= 4 |
| SbDecodeTargetGraphicsContextProvider* |
| GetSbDecodeTargetGraphicsContextProvider() OVERRIDE { |
| return NULL; |
| } |
| #elif SB_API_VERSION >= 3 |
| SbDecodeTargetProvider* GetSbDecodeTargetProvider() OVERRIDE { return NULL; } |
| #endif // SB_API_VERSION >= 4 |
| #endif // SB_HAS(GRAPHICS) |
| |
| scoped_ptr<RawImageMemory> AllocateRawImageMemory(size_t size_in_bytes, |
| size_t alignment) OVERRIDE { |
| return scoped_ptr<RawImageMemory>( |
| new RawImageMemoryStub(size_in_bytes, alignment)); |
| } |
| |
| scoped_refptr<Image> CreateMultiPlaneImageFromRawMemory( |
| scoped_ptr<RawImageMemory> raw_image_memory, |
| const MultiPlaneImageDataDescriptor& descriptor) OVERRIDE { |
| UNREFERENCED_PARAMETER(raw_image_memory); |
| UNREFERENCED_PARAMETER(descriptor); |
| return scoped_refptr<Image>(); |
| } |
| |
| bool HasLocalFontFamily(const char* font_family_name) const OVERRIDE { |
| UNREFERENCED_PARAMETER(font_family_name); |
| return true; |
| } |
| |
| scoped_refptr<Typeface> GetLocalTypeface(const char* font_family_name, |
| FontStyle font_style) OVERRIDE { |
| UNREFERENCED_PARAMETER(font_family_name); |
| UNREFERENCED_PARAMETER(font_style); |
| return make_scoped_refptr(new TypefaceStub(NULL)); |
| } |
| |
| scoped_refptr<render_tree::Typeface> GetLocalTypefaceByFaceNameIfAvailable( |
| const char* font_face_name) OVERRIDE { |
| UNREFERENCED_PARAMETER(font_face_name); |
| return make_scoped_refptr(new TypefaceStub(NULL)); |
| } |
| |
| scoped_refptr<Typeface> GetCharacterFallbackTypeface( |
| int32 utf32_character, FontStyle font_style, |
| const std::string& language) OVERRIDE { |
| UNREFERENCED_PARAMETER(utf32_character); |
| UNREFERENCED_PARAMETER(font_style); |
| UNREFERENCED_PARAMETER(language); |
| return make_scoped_refptr(new TypefaceStub(NULL)); |
| } |
| |
| scoped_refptr<Typeface> CreateTypefaceFromRawData( |
| scoped_ptr<RawTypefaceDataVector> raw_data, |
| std::string* error_string) OVERRIDE { |
| UNREFERENCED_PARAMETER(raw_data); |
| UNREFERENCED_PARAMETER(error_string); |
| return make_scoped_refptr(new TypefaceStub(NULL)); |
| } |
| |
| float GetTextWidth(const char16* text_buffer, size_t text_length, |
| const std::string& language, bool is_rtl, |
| FontProvider* font_provider, |
| FontVector* maybe_used_fonts) OVERRIDE { |
| UNREFERENCED_PARAMETER(text_buffer); |
| UNREFERENCED_PARAMETER(language); |
| UNREFERENCED_PARAMETER(is_rtl); |
| render_tree::GlyphIndex glyph_index; |
| const scoped_refptr<render_tree::Font>& font = |
| font_provider->GetCharacterFont(Internal::kDefaultCharacter, |
| &glyph_index); |
| if (maybe_used_fonts) { |
| maybe_used_fonts->push_back(font); |
| } |
| return font->GetGlyphWidth(glyph_index) * text_length; |
| } |
| |
| // Creates a glyph buffer, which is populated with shaped text, and used to |
| // render that text. |
| scoped_refptr<GlyphBuffer> CreateGlyphBuffer( |
| const char16* text_buffer, size_t text_length, |
| const std::string& language, bool is_rtl, |
| FontProvider* font_provider) OVERRIDE { |
| UNREFERENCED_PARAMETER(text_buffer); |
| UNREFERENCED_PARAMETER(language); |
| UNREFERENCED_PARAMETER(is_rtl); |
| render_tree::GlyphIndex glyph_index; |
| const scoped_refptr<render_tree::Font>& font = |
| font_provider->GetCharacterFont(Internal::kDefaultCharacter, |
| &glyph_index); |
| const math::RectF& glyph_bounds = font->GetGlyphBounds(glyph_index); |
| return make_scoped_refptr(new GlyphBuffer( |
| math::RectF(0, glyph_bounds.y(), glyph_bounds.width() * text_length, |
| glyph_bounds.height()))); |
| } |
| |
| // Creates a glyph buffer, which is populated with shaped text, and used to |
| // render that text. |
| scoped_refptr<GlyphBuffer> CreateGlyphBuffer( |
| const std::string& utf8_string, |
| const scoped_refptr<Font>& font) OVERRIDE { |
| const math::RectF& glyph_bounds = |
| font->GetGlyphBounds(Internal::kDefaultGlyphIndex); |
| return make_scoped_refptr(new GlyphBuffer(math::RectF( |
| 0, glyph_bounds.y(), glyph_bounds.width() * utf8_string.size(), |
| glyph_bounds.height()))); |
| } |
| |
| // Create a mesh which can map replaced boxes to 3D shapes. |
| scoped_refptr<render_tree::Mesh> CreateMesh( |
| scoped_ptr<std::vector<render_tree::Mesh::Vertex> > vertices, |
| render_tree::Mesh::DrawMode draw_mode) OVERRIDE { |
| return new MeshStub(vertices.Pass(), draw_mode); |
| } |
| |
| scoped_refptr<Image> DrawOffscreenImage( |
| const scoped_refptr<render_tree::Node>& root) OVERRIDE { |
| UNREFERENCED_PARAMETER(root); |
| return scoped_refptr<Image>(NULL); |
| } |
| }; |
| |
| } // namespace render_tree |
| } // namespace cobalt |
| |
| #endif // COBALT_RENDER_TREE_RESOURCE_PROVIDER_STUB_H_ |