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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef COMPONENTS_FONT_SERVICE_PUBLIC_CPP_MAPPED_FONT_FILE_H_ |
| 6 #define COMPONENTS_FONT_SERVICE_PUBLIC_CPP_MAPPED_FONT_FILE_H_ |
| 7 |
| 8 #include "base/files/file.h" |
| 9 #include "base/files/memory_mapped_file.h" |
| 10 #include "base/memory/ref_counted.h" |
| 11 #include "third_party/skia/include/core/SkStream.h" |
| 12 |
| 13 namespace font_service { |
| 14 namespace internal { |
| 15 |
| 16 // Owns the memory of the mmaped file that we get back from the font_service. |
| 17 // |
| 18 // This class is an implementation detail and shouldn't be used by consumers. |
| 19 class MappedFontFile : public base::RefCountedThreadSafe<MappedFontFile> { |
| 20 public: |
| 21 class Observer { |
| 22 public: |
| 23 ~Observer() {} |
| 24 |
| 25 // Called when a MappedFontFile is destroyed. |
| 26 virtual void OnMappedFontFileDestroyed(MappedFontFile* f) = 0; |
| 27 }; |
| 28 |
| 29 explicit MappedFontFile(uint32_t font_id); |
| 30 |
| 31 uint32_t font_id() const { return font_id_; } |
| 32 |
| 33 void set_observer(Observer* observer) { observer_ = observer; } |
| 34 |
| 35 bool Initialize(base::File file); |
| 36 |
| 37 SkMemoryStream* CreateMemoryStream(); |
| 38 |
| 39 private: |
| 40 friend class base::RefCountedThreadSafe<MappedFontFile>; |
| 41 |
| 42 ~MappedFontFile(); |
| 43 |
| 44 static void ReleaseProc(const void* ptr, void* context); |
| 45 |
| 46 uint32_t font_id_; |
| 47 base::MemoryMappedFile mapped_font_file_; |
| 48 Observer* observer_; |
| 49 }; |
| 50 |
| 51 } // namespace internal |
| 52 } // namespace font_service |
| 53 |
| 54 #endif // COMPONENTS_FONT_SERVICE_PUBLIC_CPP_MAPPED_FONT_FILE_H_ |
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