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| 1 // Copyright (c) 2011 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 #include "base/mime_util.h" | |
| 6 | |
| 7 | |
| 8 #include <cstdlib> | |
| 9 #include <list> | |
| 10 #include <map> | |
| 11 #include <vector> | |
| 12 | |
| 13 #include "base/environment.h" | |
| 14 #include "base/file_util.h" | |
| 15 #include "base/lazy_instance.h" | |
| 16 #include "base/logging.h" | |
| 17 #include "base/memory/scoped_ptr.h" | |
| 18 #include "base/memory/singleton.h" | |
| 19 #include "base/message_loop.h" | |
| 20 #include "base/nix/xdg_util.h" | |
| 21 #include "base/string_split.h" | |
| 22 #include "base/string_util.h" | |
| 23 #include "base/synchronization/lock.h" | |
| 24 #include "base/third_party/xdg_mime/xdgmime.h" | |
| 25 #include "base/threading/thread_restrictions.h" | |
| 26 #include "base/time.h" | |
| 27 | |
| 28 #if defined(TOOLKIT_USES_GTK) | |
| 29 #include <gtk/gtk.h> | |
| 30 #endif | |
| 31 | |
| 32 namespace { | |
| 33 | |
| 34 // None of the XDG stuff is thread-safe, so serialize all access under | |
| 35 // this lock. | |
| 36 static base::LazyInstance<base::Lock, | |
| 37 base::LeakyLazyInstanceTraits<base::Lock> > | |
| 38 g_mime_util_xdg_lock(base::LINKER_INITIALIZED); | |
| 39 | |
| 40 class IconTheme; | |
| 41 | |
| 42 class MimeUtilConstants { | |
| 43 public: | |
| 44 typedef std::map<std::string, IconTheme*> IconThemeMap; | |
| 45 typedef std::map<FilePath, base::Time> IconDirMtimeMap; | |
| 46 typedef std::vector<std::string> IconFormats; | |
| 47 | |
| 48 // Specified by XDG icon theme specs. | |
| 49 static const int kUpdateIntervalInSeconds = 5; | |
| 50 | |
| 51 static const size_t kDefaultThemeNum = 4; | |
| 52 | |
| 53 static MimeUtilConstants* GetInstance() { | |
| 54 return Singleton<MimeUtilConstants>::get(); | |
| 55 } | |
| 56 | |
| 57 // Store icon directories and their mtimes. | |
| 58 IconDirMtimeMap icon_dirs_; | |
| 59 | |
| 60 // Store icon formats. | |
| 61 IconFormats icon_formats_; | |
| 62 | |
| 63 // Store loaded icon_theme. | |
| 64 IconThemeMap icon_themes_; | |
| 65 | |
| 66 // The default theme. | |
| 67 IconTheme* default_themes_[kDefaultThemeNum]; | |
| 68 | |
| 69 base::TimeTicks last_check_time_; | |
| 70 | |
| 71 #if defined(TOOLKIT_USES_GTK) | |
| 72 // This is set by DetectGtkTheme(). We cache it so that we can access the | |
| 73 // theme name from threads that aren't allowed to call | |
| 74 // gtk_settings_get_default(). | |
| 75 std::string gtk_theme_name_; | |
| 76 #endif | |
| 77 | |
| 78 private: | |
| 79 MimeUtilConstants() { | |
| 80 icon_formats_.push_back(".png"); | |
| 81 icon_formats_.push_back(".svg"); | |
| 82 icon_formats_.push_back(".xpm"); | |
| 83 | |
| 84 for (size_t i = 0; i < kDefaultThemeNum; ++i) | |
| 85 default_themes_[i] = NULL; | |
| 86 } | |
| 87 ~MimeUtilConstants(); | |
| 88 | |
| 89 friend struct DefaultSingletonTraits<MimeUtilConstants>; | |
| 90 | |
| 91 DISALLOW_COPY_AND_ASSIGN(MimeUtilConstants); | |
| 92 }; | |
| 93 | |
| 94 // IconTheme represents an icon theme as defined by the xdg icon theme spec. | |
| 95 // Example themes on GNOME include 'Human' and 'Mist'. | |
| 96 // Example themes on KDE include 'crystalsvg' and 'kdeclassic'. | |
| 97 class IconTheme { | |
| 98 public: | |
| 99 // A theme consists of multiple sub-directories, like '32x32' and 'scalable'. | |
| 100 class SubDirInfo { | |
| 101 public: | |
| 102 // See spec for details. | |
| 103 enum Type { | |
| 104 Fixed, | |
| 105 Scalable, | |
| 106 Threshold | |
| 107 }; | |
| 108 SubDirInfo() | |
| 109 : size(0), | |
| 110 type(Threshold), | |
| 111 max_size(0), | |
| 112 min_size(0), | |
| 113 threshold(2) { | |
| 114 } | |
| 115 size_t size; // Nominal size of the icons in this directory. | |
| 116 Type type; // Type of the icon size. | |
| 117 size_t max_size; // Maximum size that the icons can be scaled to. | |
| 118 size_t min_size; // Minimum size that the icons can be scaled to. | |
| 119 size_t threshold; // Maximum difference from desired size. 2 by default. | |
| 120 }; | |
| 121 | |
| 122 explicit IconTheme(const std::string& name); | |
| 123 | |
| 124 ~IconTheme() {} | |
| 125 | |
| 126 // Returns the path to an icon with the name |icon_name| and a size of |size| | |
| 127 // pixels. If the icon does not exist, but |inherits| is true, then look for | |
| 128 // the icon in the parent theme. | |
| 129 FilePath GetIconPath(const std::string& icon_name, int size, bool inherits); | |
| 130 | |
| 131 // Load a theme with the name |theme_name| into memory. Returns null if theme | |
| 132 // is invalid. | |
| 133 static IconTheme* LoadTheme(const std::string& theme_name); | |
| 134 | |
| 135 private: | |
| 136 // Returns the path to an icon with the name |icon_name| in |subdir|. | |
| 137 FilePath GetIconPathUnderSubdir(const std::string& icon_name, | |
| 138 const std::string& subdir); | |
| 139 | |
| 140 // Whether the theme loaded properly. | |
| 141 bool IsValid() { | |
| 142 return index_theme_loaded_; | |
| 143 } | |
| 144 | |
| 145 // Read and parse |file| which is usually named 'index.theme' per theme spec. | |
| 146 bool LoadIndexTheme(const FilePath& file); | |
| 147 | |
| 148 // Checks to see if the icons in |info| matches |size| (in pixels). Returns | |
| 149 // 0 if they match, or the size difference in pixels. | |
| 150 size_t MatchesSize(SubDirInfo* info, size_t size); | |
| 151 | |
| 152 // Yet another function to read a line. | |
| 153 std::string ReadLine(FILE* fp); | |
| 154 | |
| 155 // Set directories to search for icons to the comma-separated list |dirs|. | |
| 156 bool SetDirectories(const std::string& dirs); | |
| 157 | |
| 158 bool index_theme_loaded_; // True if an instance is properly loaded. | |
| 159 // store the scattered directories of this theme. | |
| 160 std::list<FilePath> dirs_; | |
| 161 | |
| 162 // store the subdirs of this theme and array index of |info_array_|. | |
| 163 std::map<std::string, int> subdirs_; | |
| 164 scoped_array<SubDirInfo> info_array_; // List of sub-directories. | |
| 165 std::string inherits_; // Name of the theme this one inherits from. | |
| 166 }; | |
| 167 | |
| 168 IconTheme::IconTheme(const std::string& name) | |
| 169 : index_theme_loaded_(false), | |
| 170 info_array_(NULL) { | |
| 171 base::ThreadRestrictions::AssertIOAllowed(); | |
| 172 // Iterate on all icon directories to find directories of the specified | |
| 173 // theme and load the first encountered index.theme. | |
| 174 MimeUtilConstants::IconDirMtimeMap::iterator iter; | |
| 175 FilePath theme_path; | |
| 176 MimeUtilConstants::IconDirMtimeMap* icon_dirs = | |
| 177 &MimeUtilConstants::GetInstance()->icon_dirs_; | |
| 178 for (iter = icon_dirs->begin(); iter != icon_dirs->end(); ++iter) { | |
| 179 theme_path = iter->first.Append(name); | |
| 180 if (!file_util::DirectoryExists(theme_path)) | |
| 181 continue; | |
| 182 FilePath theme_index = theme_path.Append("index.theme"); | |
| 183 if (!index_theme_loaded_ && file_util::PathExists(theme_index)) { | |
| 184 if (!LoadIndexTheme(theme_index)) | |
| 185 return; | |
| 186 index_theme_loaded_ = true; | |
| 187 } | |
| 188 dirs_.push_back(theme_path); | |
| 189 } | |
| 190 } | |
| 191 | |
| 192 FilePath IconTheme::GetIconPath(const std::string& icon_name, int size, | |
| 193 bool inherits) { | |
| 194 std::map<std::string, int>::iterator subdir_iter; | |
| 195 FilePath icon_path; | |
| 196 | |
| 197 for (subdir_iter = subdirs_.begin(); | |
| 198 subdir_iter != subdirs_.end(); | |
| 199 ++subdir_iter) { | |
| 200 SubDirInfo* info = &info_array_[subdir_iter->second]; | |
| 201 if (MatchesSize(info, size) == 0) { | |
| 202 icon_path = GetIconPathUnderSubdir(icon_name, subdir_iter->first); | |
| 203 if (!icon_path.empty()) | |
| 204 return icon_path; | |
| 205 } | |
| 206 } | |
| 207 // Now looking for the mostly matched. | |
| 208 size_t min_delta_seen = 9999; | |
| 209 | |
| 210 for (subdir_iter = subdirs_.begin(); | |
| 211 subdir_iter != subdirs_.end(); | |
| 212 ++subdir_iter) { | |
| 213 SubDirInfo* info = &info_array_[subdir_iter->second]; | |
| 214 size_t delta = MatchesSize(info, size); | |
| 215 if (delta < min_delta_seen) { | |
| 216 FilePath path = GetIconPathUnderSubdir(icon_name, subdir_iter->first); | |
| 217 if (!path.empty()) { | |
| 218 min_delta_seen = delta; | |
| 219 icon_path = path; | |
| 220 } | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 if (!icon_path.empty() || !inherits || inherits_ == "") | |
| 225 return icon_path; | |
| 226 | |
| 227 IconTheme* theme = LoadTheme(inherits_); | |
| 228 // Inheriting from itself means the theme is buggy but we shouldn't crash. | |
| 229 if (theme && theme != this) | |
| 230 return theme->GetIconPath(icon_name, size, inherits); | |
| 231 else | |
| 232 return FilePath(); | |
| 233 } | |
| 234 | |
| 235 IconTheme* IconTheme::LoadTheme(const std::string& theme_name) { | |
| 236 scoped_ptr<IconTheme> theme; | |
| 237 MimeUtilConstants::IconThemeMap* icon_themes = | |
| 238 &MimeUtilConstants::GetInstance()->icon_themes_; | |
| 239 if (icon_themes->find(theme_name) != icon_themes->end()) { | |
| 240 theme.reset((*icon_themes)[theme_name]); | |
| 241 } else { | |
| 242 theme.reset(new IconTheme(theme_name)); | |
| 243 if (!theme->IsValid()) | |
| 244 theme.reset(); | |
| 245 (*icon_themes)[theme_name] = theme.get(); | |
| 246 } | |
| 247 return theme.release(); | |
| 248 } | |
| 249 | |
| 250 FilePath IconTheme::GetIconPathUnderSubdir(const std::string& icon_name, | |
| 251 const std::string& subdir) { | |
| 252 FilePath icon_path; | |
| 253 std::list<FilePath>::iterator dir_iter; | |
| 254 MimeUtilConstants::IconFormats* icon_formats = | |
| 255 &MimeUtilConstants::GetInstance()->icon_formats_; | |
| 256 for (dir_iter = dirs_.begin(); dir_iter != dirs_.end(); ++dir_iter) { | |
| 257 for (size_t i = 0; i < icon_formats->size(); ++i) { | |
| 258 icon_path = dir_iter->Append(subdir); | |
| 259 icon_path = icon_path.Append(icon_name + (*icon_formats)[i]); | |
| 260 if (file_util::PathExists(icon_path)) | |
| 261 return icon_path; | |
| 262 } | |
| 263 } | |
| 264 return FilePath(); | |
| 265 } | |
| 266 | |
| 267 bool IconTheme::LoadIndexTheme(const FilePath& file) { | |
| 268 FILE* fp = file_util::OpenFile(file, "r"); | |
| 269 SubDirInfo* current_info = NULL; | |
| 270 if (!fp) | |
| 271 return false; | |
| 272 | |
| 273 // Read entries. | |
| 274 while (!feof(fp) && !ferror(fp)) { | |
| 275 std::string buf = ReadLine(fp); | |
| 276 if (buf == "") | |
| 277 break; | |
| 278 | |
| 279 std::string entry; | |
| 280 TrimWhitespaceASCII(buf, TRIM_ALL, &entry); | |
| 281 if (entry.length() == 0 || entry[0] == '#') { | |
| 282 // Blank line or Comment. | |
| 283 continue; | |
| 284 } else if (entry[0] == '[' && info_array_.get()) { | |
| 285 current_info = NULL; | |
| 286 std::string subdir = entry.substr(1, entry.length() - 2); | |
| 287 if (subdirs_.find(subdir) != subdirs_.end()) | |
| 288 current_info = &info_array_[subdirs_[subdir]]; | |
| 289 } | |
| 290 | |
| 291 std::string key, value; | |
| 292 std::vector<std::string> r; | |
| 293 base::SplitStringDontTrim(entry, '=', &r); | |
| 294 if (r.size() < 2) | |
| 295 continue; | |
| 296 | |
| 297 TrimWhitespaceASCII(r[0], TRIM_ALL, &key); | |
| 298 for (size_t i = 1; i < r.size(); i++) | |
| 299 value.append(r[i]); | |
| 300 TrimWhitespaceASCII(value, TRIM_ALL, &value); | |
| 301 | |
| 302 if (current_info) { | |
| 303 if (key == "Size") { | |
| 304 current_info->size = atoi(value.c_str()); | |
| 305 } else if (key == "Type") { | |
| 306 if (value == "Fixed") | |
| 307 current_info->type = SubDirInfo::Fixed; | |
| 308 else if (value == "Scalable") | |
| 309 current_info->type = SubDirInfo::Scalable; | |
| 310 else if (value == "Threshold") | |
| 311 current_info->type = SubDirInfo::Threshold; | |
| 312 } else if (key == "MaxSize") { | |
| 313 current_info->max_size = atoi(value.c_str()); | |
| 314 } else if (key == "MinSize") { | |
| 315 current_info->min_size = atoi(value.c_str()); | |
| 316 } else if (key == "Threshold") { | |
| 317 current_info->threshold = atoi(value.c_str()); | |
| 318 } | |
| 319 } else { | |
| 320 if (key.compare("Directories") == 0 && !info_array_.get()) { | |
| 321 if (!SetDirectories(value)) break; | |
| 322 } else if (key.compare("Inherits") == 0) { | |
| 323 if (value != "hicolor") | |
| 324 inherits_ = value; | |
| 325 } | |
| 326 } | |
| 327 } | |
| 328 | |
| 329 file_util::CloseFile(fp); | |
| 330 return info_array_.get() != NULL; | |
| 331 } | |
| 332 | |
| 333 size_t IconTheme::MatchesSize(SubDirInfo* info, size_t size) { | |
| 334 if (info->type == SubDirInfo::Fixed) { | |
| 335 if (size > info->size) | |
| 336 return size - info->size; | |
| 337 else | |
| 338 return info->size - size; | |
| 339 } else if (info->type == SubDirInfo::Scalable) { | |
| 340 if (size < info->min_size) | |
| 341 return info->min_size - size; | |
| 342 if (size > info->max_size) | |
| 343 return size - info->max_size; | |
| 344 return 0; | |
| 345 } else { | |
| 346 if (size + info->threshold < info->size) | |
| 347 return info->size - size - info->threshold; | |
| 348 if (size > info->size + info->threshold) | |
| 349 return size - info->size - info->threshold; | |
| 350 return 0; | |
| 351 } | |
| 352 } | |
| 353 | |
| 354 std::string IconTheme::ReadLine(FILE* fp) { | |
| 355 if (!fp) | |
| 356 return ""; | |
| 357 | |
| 358 std::string result = ""; | |
| 359 const size_t kBufferSize = 100; | |
| 360 char buffer[kBufferSize]; | |
| 361 while ((fgets(buffer, kBufferSize - 1, fp)) != NULL) { | |
| 362 result += buffer; | |
| 363 size_t len = result.length(); | |
| 364 if (len == 0) | |
| 365 break; | |
| 366 char end = result[len - 1]; | |
| 367 if (end == '\n' || end == '\0') | |
| 368 break; | |
| 369 } | |
| 370 | |
| 371 return result; | |
| 372 } | |
| 373 | |
| 374 bool IconTheme::SetDirectories(const std::string& dirs) { | |
| 375 int num = 0; | |
| 376 std::string::size_type pos = 0, epos; | |
| 377 std::string dir; | |
| 378 while ((epos = dirs.find(',', pos)) != std::string::npos) { | |
| 379 TrimWhitespaceASCII(dirs.substr(pos, epos - pos), TRIM_ALL, &dir); | |
| 380 if (dir.length() == 0) { | |
| 381 DLOG(WARNING) << "Invalid index.theme: blank subdir"; | |
| 382 return false; | |
| 383 } | |
| 384 subdirs_[dir] = num++; | |
| 385 pos = epos + 1; | |
| 386 } | |
| 387 TrimWhitespaceASCII(dirs.substr(pos), TRIM_ALL, &dir); | |
| 388 if (dir.length() == 0) { | |
| 389 DLOG(WARNING) << "Invalid index.theme: blank subdir"; | |
| 390 return false; | |
| 391 } | |
| 392 subdirs_[dir] = num++; | |
| 393 info_array_.reset(new SubDirInfo[num]); | |
| 394 return true; | |
| 395 } | |
| 396 | |
| 397 bool CheckDirExistsAndGetMtime(const FilePath& dir, | |
| 398 base::Time* last_modified) { | |
| 399 if (!file_util::DirectoryExists(dir)) | |
| 400 return false; | |
| 401 base::PlatformFileInfo file_info; | |
| 402 if (!file_util::GetFileInfo(dir, &file_info)) | |
| 403 return false; | |
| 404 *last_modified = file_info.last_modified; | |
| 405 return true; | |
| 406 } | |
| 407 | |
| 408 // Make sure |dir| exists and add it to the list of icon directories. | |
| 409 void TryAddIconDir(const FilePath& dir) { | |
| 410 base::Time last_modified; | |
| 411 if (!CheckDirExistsAndGetMtime(dir, &last_modified)) | |
| 412 return; | |
| 413 MimeUtilConstants::GetInstance()->icon_dirs_[dir] = last_modified; | |
| 414 } | |
| 415 | |
| 416 // For a xdg directory |dir|, add the appropriate icon sub-directories. | |
| 417 void AddXDGDataDir(const FilePath& dir) { | |
| 418 if (!file_util::DirectoryExists(dir)) | |
| 419 return; | |
| 420 TryAddIconDir(dir.Append("icons")); | |
| 421 TryAddIconDir(dir.Append("pixmaps")); | |
| 422 } | |
| 423 | |
| 424 // Add all the xdg icon directories. | |
| 425 void InitIconDir() { | |
| 426 FilePath home = file_util::GetHomeDir(); | |
| 427 if (!home.empty()) { | |
| 428 FilePath legacy_data_dir(home); | |
| 429 legacy_data_dir = legacy_data_dir.AppendASCII(".icons"); | |
| 430 if (file_util::DirectoryExists(legacy_data_dir)) | |
| 431 TryAddIconDir(legacy_data_dir); | |
| 432 } | |
| 433 const char* env = getenv("XDG_DATA_HOME"); | |
| 434 if (env) { | |
| 435 AddXDGDataDir(FilePath(env)); | |
| 436 } else if (!home.empty()) { | |
| 437 FilePath local_data_dir(home); | |
| 438 local_data_dir = local_data_dir.AppendASCII(".local"); | |
| 439 local_data_dir = local_data_dir.AppendASCII("share"); | |
| 440 AddXDGDataDir(local_data_dir); | |
| 441 } | |
| 442 | |
| 443 env = getenv("XDG_DATA_DIRS"); | |
| 444 if (!env) { | |
| 445 AddXDGDataDir(FilePath("/usr/local/share")); | |
| 446 AddXDGDataDir(FilePath("/usr/share")); | |
| 447 } else { | |
| 448 std::string xdg_data_dirs = env; | |
| 449 std::string::size_type pos = 0, epos; | |
| 450 while ((epos = xdg_data_dirs.find(':', pos)) != std::string::npos) { | |
| 451 AddXDGDataDir(FilePath(xdg_data_dirs.substr(pos, epos - pos))); | |
| 452 pos = epos + 1; | |
| 453 } | |
| 454 AddXDGDataDir(FilePath(xdg_data_dirs.substr(pos))); | |
| 455 } | |
| 456 } | |
| 457 | |
| 458 void EnsureUpdated() { | |
| 459 MimeUtilConstants* constants = MimeUtilConstants::GetInstance(); | |
| 460 if (constants->last_check_time_.is_null()) { | |
| 461 constants->last_check_time_ = base::TimeTicks::Now(); | |
| 462 InitIconDir(); | |
| 463 return; | |
| 464 } | |
| 465 | |
| 466 // Per xdg theme spec, we should check the icon directories every so often | |
| 467 // for newly added icons. | |
| 468 base::TimeDelta time_since_last_check = | |
| 469 base::TimeTicks::Now() - constants->last_check_time_; | |
| 470 if (time_since_last_check.InSeconds() > constants->kUpdateIntervalInSeconds) { | |
| 471 constants->last_check_time_ += time_since_last_check; | |
| 472 | |
| 473 bool rescan_icon_dirs = false; | |
| 474 MimeUtilConstants::IconDirMtimeMap* icon_dirs = &constants->icon_dirs_; | |
| 475 MimeUtilConstants::IconDirMtimeMap::iterator iter; | |
| 476 for (iter = icon_dirs->begin(); iter != icon_dirs->end(); ++iter) { | |
| 477 base::Time last_modified; | |
| 478 if (!CheckDirExistsAndGetMtime(iter->first, &last_modified) || | |
| 479 last_modified != iter->second) { | |
| 480 rescan_icon_dirs = true; | |
| 481 break; | |
| 482 } | |
| 483 } | |
| 484 | |
| 485 if (rescan_icon_dirs) { | |
| 486 constants->icon_dirs_.clear(); | |
| 487 constants->icon_themes_.clear(); | |
| 488 InitIconDir(); | |
| 489 } | |
| 490 } | |
| 491 } | |
| 492 | |
| 493 // Find a fallback icon if we cannot find it in the default theme. | |
| 494 FilePath LookupFallbackIcon(const std::string& icon_name) { | |
| 495 MimeUtilConstants* constants = MimeUtilConstants::GetInstance(); | |
| 496 MimeUtilConstants::IconDirMtimeMap::iterator iter; | |
| 497 MimeUtilConstants::IconDirMtimeMap* icon_dirs = &constants->icon_dirs_; | |
| 498 MimeUtilConstants::IconFormats* icon_formats = &constants->icon_formats_; | |
| 499 for (iter = icon_dirs->begin(); iter != icon_dirs->end(); ++iter) { | |
| 500 for (size_t i = 0; i < icon_formats->size(); ++i) { | |
| 501 FilePath icon = iter->first.Append(icon_name + (*icon_formats)[i]); | |
| 502 if (file_util::PathExists(icon)) | |
| 503 return icon; | |
| 504 } | |
| 505 } | |
| 506 return FilePath(); | |
| 507 } | |
| 508 | |
| 509 // Initialize the list of default themes. | |
| 510 void InitDefaultThemes() { | |
| 511 IconTheme** default_themes = | |
| 512 MimeUtilConstants::GetInstance()->default_themes_; | |
| 513 | |
| 514 scoped_ptr<base::Environment> env(base::Environment::Create()); | |
| 515 base::nix::DesktopEnvironment desktop_env = | |
| 516 base::nix::GetDesktopEnvironment(env.get()); | |
| 517 if (desktop_env == base::nix::DESKTOP_ENVIRONMENT_KDE3 || | |
| 518 desktop_env == base::nix::DESKTOP_ENVIRONMENT_KDE4) { | |
| 519 // KDE | |
| 520 std::string kde_default_theme; | |
| 521 std::string kde_fallback_theme; | |
| 522 | |
| 523 // TODO(thestig): Figure out how to get the current icon theme on KDE. | |
| 524 // Setting stored in ~/.kde/share/config/kdeglobals under Icons -> Theme. | |
| 525 default_themes[0] = NULL; | |
| 526 | |
| 527 // Try some reasonable defaults for KDE. | |
| 528 if (desktop_env == base::nix::DESKTOP_ENVIRONMENT_KDE3) { | |
| 529 // KDE 3 | |
| 530 kde_default_theme = "default.kde"; | |
| 531 kde_fallback_theme = "crystalsvg"; | |
| 532 } else { | |
| 533 // KDE 4 | |
| 534 kde_default_theme = "default.kde4"; | |
| 535 kde_fallback_theme = "oxygen"; | |
| 536 } | |
| 537 default_themes[1] = IconTheme::LoadTheme(kde_default_theme); | |
| 538 default_themes[2] = IconTheme::LoadTheme(kde_fallback_theme); | |
| 539 } else { | |
| 540 #if defined(TOOLKIT_USES_GTK) | |
| 541 // Assume it's Gnome and use GTK to figure out the theme. | |
| 542 default_themes[1] = IconTheme::LoadTheme( | |
| 543 MimeUtilConstants::GetInstance()->gtk_theme_name_); | |
| 544 default_themes[2] = IconTheme::LoadTheme("gnome"); | |
| 545 #endif | |
| 546 } | |
| 547 // hicolor needs to be last per icon theme spec. | |
| 548 default_themes[3] = IconTheme::LoadTheme("hicolor"); | |
| 549 | |
| 550 for (size_t i = 0; i < MimeUtilConstants::kDefaultThemeNum; i++) { | |
| 551 if (default_themes[i] == NULL) | |
| 552 continue; | |
| 553 // NULL out duplicate pointers. | |
| 554 for (size_t j = i + 1; j < MimeUtilConstants::kDefaultThemeNum; j++) { | |
| 555 if (default_themes[j] == default_themes[i]) | |
| 556 default_themes[j] = NULL; | |
| 557 } | |
| 558 } | |
| 559 } | |
| 560 | |
| 561 // Try to find an icon with the name |icon_name| that's |size| pixels. | |
| 562 FilePath LookupIconInDefaultTheme(const std::string& icon_name, int size) { | |
| 563 EnsureUpdated(); | |
| 564 MimeUtilConstants* constants = MimeUtilConstants::GetInstance(); | |
| 565 MimeUtilConstants::IconThemeMap* icon_themes = &constants->icon_themes_; | |
| 566 if (icon_themes->empty()) | |
| 567 InitDefaultThemes(); | |
| 568 | |
| 569 FilePath icon_path; | |
| 570 IconTheme** default_themes = constants->default_themes_; | |
| 571 for (size_t i = 0; i < MimeUtilConstants::kDefaultThemeNum; i++) { | |
| 572 if (default_themes[i]) { | |
| 573 icon_path = default_themes[i]->GetIconPath(icon_name, size, true); | |
| 574 if (!icon_path.empty()) | |
| 575 return icon_path; | |
| 576 } | |
| 577 } | |
| 578 return LookupFallbackIcon(icon_name); | |
| 579 } | |
| 580 | |
| 581 MimeUtilConstants::~MimeUtilConstants() { | |
| 582 for (size_t i = 0; i < kDefaultThemeNum; i++) | |
| 583 delete default_themes_[i]; | |
| 584 } | |
| 585 | |
| 586 } // namespace | |
| 587 | |
| 588 namespace mime_util { | |
| 589 | |
| 590 std::string GetFileMimeType(const FilePath& filepath) { | |
| 591 base::ThreadRestrictions::AssertIOAllowed(); | |
| 592 base::AutoLock scoped_lock(g_mime_util_xdg_lock.Get()); | |
| 593 return xdg_mime_get_mime_type_from_file_name(filepath.value().c_str()); | |
| 594 } | |
| 595 | |
| 596 std::string GetDataMimeType(const std::string& data) { | |
| 597 base::ThreadRestrictions::AssertIOAllowed(); | |
| 598 base::AutoLock scoped_lock(g_mime_util_xdg_lock.Get()); | |
| 599 return xdg_mime_get_mime_type_for_data(data.data(), data.length(), NULL); | |
| 600 } | |
| 601 | |
| 602 #if defined(TOOLKIT_USES_GTK) | |
| 603 void DetectGtkTheme() { | |
| 604 // If the theme name is already loaded, do nothing. Chrome doesn't respond | |
| 605 // to changes in the system theme, so we never need to set this more than | |
| 606 // once. | |
| 607 if (!MimeUtilConstants::GetInstance()->gtk_theme_name_.empty()) | |
| 608 return; | |
| 609 | |
| 610 // We should only be called on the UI thread. | |
| 611 DCHECK_EQ(MessageLoop::TYPE_UI, MessageLoop::current()->type()); | |
| 612 | |
| 613 gchar* gtk_theme_name; | |
| 614 g_object_get(gtk_settings_get_default(), | |
| 615 "gtk-icon-theme-name", | |
| 616 >k_theme_name, NULL); | |
| 617 MimeUtilConstants::GetInstance()->gtk_theme_name_.assign(gtk_theme_name); | |
| 618 g_free(gtk_theme_name); | |
| 619 } | |
| 620 #endif | |
| 621 | |
| 622 FilePath GetMimeIcon(const std::string& mime_type, size_t size) { | |
| 623 base::ThreadRestrictions::AssertIOAllowed(); | |
| 624 std::vector<std::string> icon_names; | |
| 625 std::string icon_name; | |
| 626 FilePath icon_file; | |
| 627 | |
| 628 { | |
| 629 base::AutoLock scoped_lock(g_mime_util_xdg_lock.Get()); | |
| 630 const char *icon = xdg_mime_get_icon(mime_type.c_str()); | |
| 631 icon_name = std::string(icon ? icon : ""); | |
| 632 } | |
| 633 | |
| 634 if (icon_name.length()) | |
| 635 icon_names.push_back(icon_name); | |
| 636 | |
| 637 // For text/plain, try text-plain. | |
| 638 icon_name = mime_type; | |
| 639 for (size_t i = icon_name.find('/', 0); i != std::string::npos; | |
| 640 i = icon_name.find('/', i + 1)) { | |
| 641 icon_name[i] = '-'; | |
| 642 } | |
| 643 icon_names.push_back(icon_name); | |
| 644 // Also try gnome-mime-text-plain. | |
| 645 icon_names.push_back("gnome-mime-" + icon_name); | |
| 646 | |
| 647 // Try "deb" for "application/x-deb" in KDE 3. | |
| 648 size_t x_substr_pos = mime_type.find("/x-"); | |
| 649 if (x_substr_pos != std::string::npos) { | |
| 650 icon_name = mime_type.substr(x_substr_pos + 3); | |
| 651 icon_names.push_back(icon_name); | |
| 652 } | |
| 653 | |
| 654 // Try generic name like text-x-generic. | |
| 655 icon_name = mime_type.substr(0, mime_type.find('/')) + "-x-generic"; | |
| 656 icon_names.push_back(icon_name); | |
| 657 | |
| 658 // Last resort | |
| 659 icon_names.push_back("unknown"); | |
| 660 | |
| 661 for (size_t i = 0; i < icon_names.size(); i++) { | |
| 662 if (icon_names[i][0] == '/') { | |
| 663 icon_file = FilePath(icon_names[i]); | |
| 664 if (file_util::PathExists(icon_file)) | |
| 665 return icon_file; | |
| 666 } else { | |
| 667 icon_file = LookupIconInDefaultTheme(icon_names[i], size); | |
| 668 if (!icon_file.empty()) | |
| 669 return icon_file; | |
| 670 } | |
| 671 } | |
| 672 return FilePath(); | |
| 673 } | |
| 674 | |
| 675 } // namespace mime_util | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 8538008:
Linux: Move base/mime_util* to base/nix. It's not used on any other platform. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/