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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_BROWSER_THEMES_BROWSER_THEME_PACK_H_ | 5 #ifndef CHROME_BROWSER_THEMES_BROWSER_THEME_PACK_H_ |
6 #define CHROME_BROWSER_THEMES_BROWSER_THEME_PACK_H_ | 6 #define CHROME_BROWSER_THEMES_BROWSER_THEME_PACK_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <map> | 10 #include <map> |
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46 // BuildFromExtension() interface, we WriteToDisk() on a thread other than the | 46 // BuildFromExtension() interface, we WriteToDisk() on a thread other than the |
47 // UI thread that consumes a BrowserThemePack. There is no locking; thread | 47 // UI thread that consumes a BrowserThemePack. There is no locking; thread |
48 // safety between the writing thread and the UI thread is ensured by having the | 48 // safety between the writing thread and the UI thread is ensured by having the |
49 // data be immutable. | 49 // data be immutable. |
50 // | 50 // |
51 // BrowserThemePacks are always deleted on the file thread because in the | 51 // BrowserThemePacks are always deleted on the file thread because in the |
52 // common case, they are backed by mmapped data and the unmmapping operation | 52 // common case, they are backed by mmapped data and the unmmapping operation |
53 // will trip our IO on the UI thread detector. | 53 // will trip our IO on the UI thread detector. |
54 class BrowserThemePack : public CustomThemeSupplier { | 54 class BrowserThemePack : public CustomThemeSupplier { |
55 public: | 55 public: |
56 // Builds the theme from |extension| into |pack|. This may be done on a | 56 // Builds the theme pack from all data from |extension|. This is often done |
57 // separate thread as it takes so long. This can fail in the case where the | 57 // on a separate thread as it takes so long. This can fail and return NULL in |
58 // theme has invalid data, in which case |pack->is_valid()| will be false. | 58 // the case where the theme has invalid data. |
59 static void BuildFromExtension(const extensions::Extension* extension, | 59 static scoped_refptr<BrowserThemePack> BuildFromExtension( |
60 scoped_refptr<BrowserThemePack> pack); | 60 const extensions::Extension* extension); |
61 | 61 |
62 // Builds the theme pack from a previously performed WriteToDisk(). This | 62 // Builds the theme pack from a previously performed WriteToDisk(). This |
63 // operation should be relatively fast, as it should be an mmap() and some | 63 // operation should be relatively fast, as it should be an mmap() and some |
64 // pointer swizzling. Returns NULL on any error attempting to read |path|. | 64 // pointer swizzling. Returns NULL on any error attempting to read |path|. |
65 static scoped_refptr<BrowserThemePack> BuildFromDataPack( | 65 static scoped_refptr<BrowserThemePack> BuildFromDataPack( |
66 const base::FilePath& path, const std::string& expected_id); | 66 const base::FilePath& path, const std::string& expected_id); |
67 | 67 |
68 // Returns whether the specified identifier is one of the images we persist | 68 // Returns whether the specified identifier is one of the images we persist |
69 // in the data pack. | 69 // in the data pack. |
70 static bool IsPersistentImageID(int id); | 70 static bool IsPersistentImageID(int id); |
71 | 71 |
72 // Default. Everything is empty. | |
73 BrowserThemePack(); | |
74 | |
75 bool is_valid() const { return is_valid_; } | |
76 | |
77 // Builds a data pack on disk at |path| for future quick loading by | 72 // Builds a data pack on disk at |path| for future quick loading by |
78 // BuildFromDataPack(). Often (but not always) called from the file thread; | 73 // BuildFromDataPack(). Often (but not always) called from the file thread; |
79 // implementation should be threadsafe because neither thread will write to | 74 // implementation should be threadsafe because neither thread will write to |
80 // |image_memory_| and the worker thread will keep a reference to prevent | 75 // |image_memory_| and the worker thread will keep a reference to prevent |
81 // destruction. | 76 // destruction. |
82 bool WriteToDisk(const base::FilePath& path) const; | 77 bool WriteToDisk(const base::FilePath& path) const; |
83 | 78 |
84 // Overridden from CustomThemeSupplier: | 79 // Overridden from CustomThemeSupplier: |
85 bool GetTint(int id, color_utils::HSL* hsl) const override; | 80 bool GetTint(int id, color_utils::HSL* hsl) const override; |
86 bool GetColor(int id, SkColor* color) const override; | 81 bool GetColor(int id, SkColor* color) const override; |
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101 | 96 |
102 // The type passed to ui::DataPack::WritePack. | 97 // The type passed to ui::DataPack::WritePack. |
103 typedef std::map<uint16_t, base::StringPiece> RawDataForWriting; | 98 typedef std::map<uint16_t, base::StringPiece> RawDataForWriting; |
104 | 99 |
105 // Maps scale factors (enum values) to file paths. | 100 // Maps scale factors (enum values) to file paths. |
106 typedef std::map<ui::ScaleFactor, base::FilePath> ScaleFactorToFileMap; | 101 typedef std::map<ui::ScaleFactor, base::FilePath> ScaleFactorToFileMap; |
107 | 102 |
108 // Maps image ids to maps of scale factors to file paths. | 103 // Maps image ids to maps of scale factors to file paths. |
109 typedef std::map<int, ScaleFactorToFileMap> FilePathMap; | 104 typedef std::map<int, ScaleFactorToFileMap> FilePathMap; |
110 | 105 |
| 106 // Default. Everything is empty. |
| 107 BrowserThemePack(); |
| 108 |
111 ~BrowserThemePack() override; | 109 ~BrowserThemePack() override; |
112 | 110 |
113 // Builds a header ready to write to disk. | 111 // Builds a header ready to write to disk. |
114 void BuildHeader(const extensions::Extension* extension); | 112 void BuildHeader(const extensions::Extension* extension); |
115 | 113 |
116 // Transforms the JSON tint values into their final versions in the |tints_| | 114 // Transforms the JSON tint values into their final versions in the |tints_| |
117 // array. | 115 // array. |
118 void BuildTintsFromJSON(const base::DictionaryValue* tints_value); | 116 void BuildTintsFromJSON(const base::DictionaryValue* tints_value); |
119 | 117 |
120 // Transforms the JSON color values into their final versions in the | 118 // Transforms the JSON color values into their final versions in the |
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212 // Header that is written to disk. | 210 // Header that is written to disk. |
213 struct BrowserThemePackHeader { | 211 struct BrowserThemePackHeader { |
214 // Numeric version to make sure we're compatible in the future. | 212 // Numeric version to make sure we're compatible in the future. |
215 int32_t version; | 213 int32_t version; |
216 | 214 |
217 // 1 if little_endian. 0 if big_endian. On mismatch, abort load. | 215 // 1 if little_endian. 0 if big_endian. On mismatch, abort load. |
218 int32_t little_endian; | 216 int32_t little_endian; |
219 | 217 |
220 // theme_id without NULL terminator. | 218 // theme_id without NULL terminator. |
221 uint8_t theme_id[16]; | 219 uint8_t theme_id[16]; |
222 }* header_ = nullptr; | 220 } *header_; |
223 | 221 |
224 // The remaining structs represent individual entries in an array. For the | 222 // The remaining structs represent individual entries in an array. For the |
225 // following three structs, BrowserThemePack will either allocate an array or | 223 // following three structs, BrowserThemePack will either allocate an array or |
226 // will point directly to mmapped data. | 224 // will point directly to mmapped data. |
227 struct TintEntry { | 225 struct TintEntry { |
228 int32_t id; | 226 int32_t id; |
229 double h; | 227 double h; |
230 double s; | 228 double s; |
231 double l; | 229 double l; |
232 }* tints_ = nullptr; | 230 } *tints_; |
233 | 231 |
234 struct ColorPair { | 232 struct ColorPair { |
235 int32_t id; | 233 int32_t id; |
236 SkColor color; | 234 SkColor color; |
237 }* colors_ = nullptr; | 235 } *colors_; |
238 | 236 |
239 struct DisplayPropertyPair { | 237 struct DisplayPropertyPair { |
240 int32_t id; | 238 int32_t id; |
241 int32_t property; | 239 int32_t property; |
242 }* display_properties_ = nullptr; | 240 } *display_properties_; |
243 | 241 |
244 // A list of included source images. A pointer to a -1 terminated array of | 242 // A list of included source images. A pointer to a -1 terminated array of |
245 // our persistent IDs. | 243 // our persistent IDs. |
246 int* source_images_ = nullptr; | 244 int* source_images_; |
247 #pragma pack(pop) | 245 #pragma pack(pop) |
248 | 246 |
249 // The scale factors represented by the images in the theme pack. | 247 // The scale factors represented by the images in the theme pack. |
250 std::vector<ui::ScaleFactor> scale_factors_; | 248 std::vector<ui::ScaleFactor> scale_factors_; |
251 | 249 |
252 // References to raw PNG data. This map isn't touched when |data_pack_| is | 250 // References to raw PNG data. This map isn't touched when |data_pack_| is |
253 // non-NULL; |image_memory_| is only filled during BuildFromExtension(). Any | 251 // non-NULL; |image_memory_| is only filled during BuildFromExtension(). Any |
254 // image data that needs to be written to the DataPack during WriteToDisk() | 252 // image data that needs to be written to the DataPack during WriteToDisk() |
255 // needs to be in |image_memory_|. | 253 // needs to be in |image_memory_|. |
256 RawImages image_memory_; | 254 RawImages image_memory_; |
257 | 255 |
258 // Loaded images. These are loaded from |image_memory_|, from |data_pack_|, | 256 // Loaded images. These are loaded from |image_memory_|, from |data_pack_|, |
259 // and by BuildFromExtension(). | 257 // and by BuildFromExtension(). These images should only be accessed on the UI |
260 ImageCache images_; | 258 // thread. |
| 259 ImageCache images_on_ui_thread_; |
261 | 260 |
262 // Cache of images created in BuildFromExtension(). Once the theme pack is | 261 // Cache of images created in BuildFromExtension(). Once the theme pack is |
263 // created, this cache should only be accessed on the file thread. There | 262 // created, this cache should only be accessed on the file thread. There |
264 // should be no IDs in |image_memory_| that are in |images_on_file_thread_| | 263 // should be no IDs in |image_memory_| that are in |images_on_file_thread_| |
265 // or vice versa. | 264 // or vice versa. |
266 ImageCache images_on_file_thread_; | 265 ImageCache images_on_file_thread_; |
267 | 266 |
268 // Whether the theme pack has been succesfully initialized and is ready to | |
269 // use. | |
270 bool is_valid_ = false; | |
271 | |
272 DISALLOW_COPY_AND_ASSIGN(BrowserThemePack); | 267 DISALLOW_COPY_AND_ASSIGN(BrowserThemePack); |
273 }; | 268 }; |
274 | 269 |
275 #endif // CHROME_BROWSER_THEMES_BROWSER_THEME_PACK_H_ | 270 #endif // CHROME_BROWSER_THEMES_BROWSER_THEME_PACK_H_ |
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