| // Copyright 2016 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_GLYPH_BUFFER_H_ |
| #define COBALT_RENDER_TREE_GLYPH_BUFFER_H_ |
| |
| #include "base/memory/ref_counted.h" |
| #include "cobalt/math/rect_f.h" |
| |
| namespace cobalt { |
| namespace render_tree { |
| |
| // The GlyphBuffer class is a base class, which contains the data needed to |
| // render shaped text. It is intended to be immutable and thread-safe. Since |
| // GlyphBuffer objects may be created in the front-end, but must be accessed |
| // by the rasterizer, it is expected that they will be downcast again to a |
| // rasterizer-specific type through base::polymorphic_downcast(). |
| class GlyphBuffer : public base::RefCountedThreadSafe<GlyphBuffer> { |
| public: |
| explicit GlyphBuffer(const math::RectF& bounds) : bounds_(bounds) {} |
| virtual ~GlyphBuffer() {} |
| |
| const math::RectF& GetBounds() const { return bounds_; } |
| |
| private: |
| const math::RectF bounds_; |
| |
| // Allow the reference counting system access to our destructor. |
| friend class base::RefCountedThreadSafe<GlyphBuffer>; |
| }; |
| |
| } // namespace render_tree |
| } // namespace cobalt |
| |
| #endif // COBALT_RENDER_TREE_GLYPH_BUFFER_H_ |