| /* |
| * Copyright 2011 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. |
| */ |
| // File is originally from Chromium third_party/sfntly/src/subsetter. |
| // Use as test case in sfntly so that problems can be caught in upstream early. |
| |
| #ifndef TYPOGRAPHY_FONT_SFNTLY_SRC_TEST_SUBSETTER_IMPL_H_ |
| #define TYPOGRAPHY_FONT_SFNTLY_SRC_TEST_SUBSETTER_IMPL_H_ |
| |
| #include "sfntly/font.h" |
| #include "sfntly/font_factory.h" |
| |
| namespace sfntly { |
| |
| // Smart pointer usage in sfntly: |
| // |
| // sfntly carries a smart pointer implementation like COM. Ref-countable object |
| // type inherits from RefCounted<>, which have AddRef and Release just like |
| // IUnknown (but no QueryInterface). Use a Ptr<> based smart pointer to hold |
| // the object so that the object ref count is handled correctly. |
| // |
| // class Foo : public RefCounted<Foo> { |
| // public: |
| // static Foo* CreateInstance() { |
| // Ptr<Foo> obj = new Foo(); // ref count = 1 |
| // return obj.detach(); |
| // } |
| // }; |
| // typedef Ptr<Foo> FooPtr; // common short-hand notation |
| // FooPtr obj; |
| // obj.attach(Foo::CreatedInstance()); // ref count = 1 |
| // { |
| // FooPtr obj2 = obj; // ref count = 2 |
| // } // ref count = 1, obj2 out of scope |
| // obj.release(); // ref count = 0, object destroyed |
| |
| class SubsetterImpl { |
| public: |
| SubsetterImpl(); |
| ~SubsetterImpl(); |
| |
| bool LoadFont(const char* font_name, |
| const unsigned char* original_font, |
| size_t font_size); |
| int SubsetFont(const unsigned int* glyph_ids, |
| size_t glyph_count, |
| unsigned char** output_buffer); |
| |
| private: |
| Font* FindFont(const char* font_name, const FontArray& font_array); |
| bool HasName(const char* font_name, Font* font); |
| bool ResolveCompositeGlyphs(const unsigned int* glyph_ids, |
| size_t glyph_count, |
| IntegerSet* glyph_id_processed); |
| CALLER_ATTACH Font* Subset(const IntegerSet& glyph_ids); |
| |
| FontFactoryPtr factory_; |
| FontPtr font_; |
| }; |
| |
| } // namespace sfntly |
| |
| #endif // TYPOGRAPHY_FONT_SFNTLY_SRC_TEST_SUBSETTER_IMPL_H_ |