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