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
3 // found in the LICENSE file.
5 #include "ui/base/resource/resource_bundle.h"
10 #include "base/big_endian.h"
11 #include "base/command_line.h"
12 #include "base/file_util.h"
13 #include "base/files/file.h"
14 #include "base/logging.h"
15 #include "base/memory/ref_counted_memory.h"
16 #include "base/metrics/histogram.h"
17 #include "base/path_service.h"
18 #include "base/stl_util.h"
19 #include "base/strings/string_piece.h"
20 #include "base/strings/utf_string_conversions.h"
21 #include "base/synchronization/lock.h"
22 #include "build/build_config.h"
23 #include "grit/app_locale_settings.h"
24 #include "skia/ext/image_operations.h"
25 #include "third_party/skia/include/core/SkBitmap.h"
26 #include "ui/base/l10n/l10n_util.h"
27 #include "ui/base/layout.h"
28 #include "ui/base/resource/data_pack.h"
29 #include "ui/base/ui_base_paths.h"
30 #include "ui/base/ui_base_switches.h"
31 #include "ui/gfx/codec/jpeg_codec.h"
32 #include "ui/gfx/codec/png_codec.h"
33 #include "ui/gfx/image/image_skia.h"
34 #include "ui/gfx/image/image_skia_source.h"
35 #include "ui/gfx/safe_integer_conversions.h"
36 #include "ui/gfx/screen.h"
37 #include "ui/gfx/size_conversions.h"
39 #if defined(OS_ANDROID)
40 #include "ui/base/resource/resource_bundle_android.h"
43 #if defined(OS_CHROMEOS)
44 #include "ui/base/l10n/l10n_util.h"
45 #include "ui/gfx/platform_font_pango.h"
49 #include "ui/base/win/dpi_setup.h"
50 #include "ui/gfx/win/dpi.h"
53 #if defined(OS_MACOSX) && !defined(OS_IOS)
54 #include "base/mac/mac_util.h"
61 // Font sizes relative to base font.
62 const int kSmallFontSizeDelta = -1;
63 const int kMediumFontSizeDelta = 3;
64 const int kLargeFontSizeDelta = 8;
66 // PNG-related constants.
67 const unsigned char kPngMagic[8] = { 0x89, 'P', 'N', 'G', 13, 10, 26, 10 };
68 const size_t kPngChunkMetadataSize = 12; // length, type, crc32
69 const unsigned char kPngScaleChunkType[4] = { 'c', 's', 'C', 'l' };
70 const unsigned char kPngDataChunkType[4] = { 'I', 'D', 'A', 'T' };
72 #if !defined(OS_MACOSX)
73 const char kPakFileSuffix[] = ".pak";
76 ResourceBundle* g_shared_instance_ = NULL;
78 void InitDefaultFontList() {
79 #if defined(OS_CHROMEOS) && defined(USE_PANGO)
80 ResourceBundle& rb = ResourceBundle::GetSharedInstance();
81 std::string font_family = base::UTF16ToUTF8(
82 rb.GetLocalizedString(IDS_UI_FONT_FAMILY_CROS));
83 gfx::FontList::SetDefaultFontDescription(font_family);
85 // TODO(yukishiino): Remove SetDefaultFontDescription() once the migration to
86 // the font list is done. We will no longer need SetDefaultFontDescription()
87 // after every client gets started using a FontList instead of a Font.
88 gfx::PlatformFontPango::SetDefaultFontDescription(font_family);
90 // Use a single default font as the default font list.
91 gfx::FontList::SetDefaultFontDescription(std::string());
95 #if defined(OS_ANDROID)
96 // Returns the scale factor closest to |scale| from the full list of factors.
97 // Note that it does NOT rely on the list of supported scale factors.
98 // Finding the closest match is inefficient and shouldn't be done frequently.
99 ScaleFactor FindClosestScaleFactorUnsafe(float scale) {
100 float smallest_diff = std::numeric_limits<float>::max();
101 ScaleFactor closest_match = SCALE_FACTOR_100P;
102 for (int i = SCALE_FACTOR_100P; i < NUM_SCALE_FACTORS; ++i) {
103 const ScaleFactor scale_factor = static_cast<ScaleFactor>(i);
104 float diff = std::abs(GetScaleForScaleFactor(scale_factor) - scale);
105 if (diff < smallest_diff) {
106 closest_match = scale_factor;
107 smallest_diff = diff;
110 return closest_match;
116 // An ImageSkiaSource that loads bitmaps for the requested scale factor from
117 // ResourceBundle on demand for a given |resource_id|. If the bitmap for the
118 // requested scale factor does not exist, it will return the 1x bitmap scaled
119 // by the scale factor. This may lead to broken UI if the correct size of the
120 // scaled image is not exactly |scale_factor| * the size of the 1x resource.
121 // When --highlight-missing-scaled-resources flag is specified, scaled 1x images
122 // are higlighted by blending them with red.
123 class ResourceBundle::ResourceBundleImageSource : public gfx::ImageSkiaSource {
125 ResourceBundleImageSource(ResourceBundle* rb, int resource_id)
126 : rb_(rb), resource_id_(resource_id) {}
127 virtual ~ResourceBundleImageSource() {}
129 // gfx::ImageSkiaSource overrides:
130 virtual gfx::ImageSkiaRep GetImageForScale(float scale) OVERRIDE {
132 bool fell_back_to_1x = false;
133 ScaleFactor scale_factor = GetSupportedScaleFactor(scale);
134 bool found = rb_->LoadBitmap(resource_id_, &scale_factor,
135 &image, &fell_back_to_1x);
137 return gfx::ImageSkiaRep();
139 // If the resource is in the package with SCALE_FACTOR_NONE, it
140 // can be used in any scale factor. The image is maked as "unscaled"
141 // so that the ImageSkia do not automatically scale.
142 if (scale_factor == ui::SCALE_FACTOR_NONE)
143 return gfx::ImageSkiaRep(image, 0.0f);
145 if (fell_back_to_1x) {
146 // GRIT fell back to the 100% image, so rescale it to the correct size.
147 image = skia::ImageOperations::Resize(
149 skia::ImageOperations::RESIZE_LANCZOS3,
150 gfx::ToCeiledInt(image.width() * scale),
151 gfx::ToCeiledInt(image.height() * scale));
153 scale = GetScaleForScaleFactor(scale_factor);
155 return gfx::ImageSkiaRep(image, scale);
160 const int resource_id_;
162 DISALLOW_COPY_AND_ASSIGN(ResourceBundleImageSource);
166 std::string ResourceBundle::InitSharedInstanceWithLocale(
167 const std::string& pref_locale,
169 LoadResources load_resources) {
170 InitSharedInstance(delegate);
171 if (load_resources == LOAD_COMMON_RESOURCES)
172 g_shared_instance_->LoadCommonResources();
173 std::string result = g_shared_instance_->LoadLocaleResources(pref_locale);
174 InitDefaultFontList();
179 void ResourceBundle::InitSharedInstanceWithPakFileRegion(
181 const base::MemoryMappedFile::Region& region) {
182 InitSharedInstance(NULL);
183 scoped_ptr<DataPack> data_pack(new DataPack(SCALE_FACTOR_100P));
184 if (!data_pack->LoadFromFileRegion(pak_file.Pass(), region)) {
185 NOTREACHED() << "failed to load pak file";
188 g_shared_instance_->locale_resources_data_.reset(data_pack.release());
189 InitDefaultFontList();
193 void ResourceBundle::InitSharedInstanceWithPakPath(const base::FilePath& path) {
194 InitSharedInstance(NULL);
195 g_shared_instance_->LoadTestResources(path, path);
197 InitDefaultFontList();
201 void ResourceBundle::CleanupSharedInstance() {
202 if (g_shared_instance_) {
203 delete g_shared_instance_;
204 g_shared_instance_ = NULL;
209 bool ResourceBundle::HasSharedInstance() {
210 return g_shared_instance_ != NULL;
214 ResourceBundle& ResourceBundle::GetSharedInstance() {
215 // Must call InitSharedInstance before this function.
216 CHECK(g_shared_instance_ != NULL);
217 return *g_shared_instance_;
220 bool ResourceBundle::LocaleDataPakExists(const std::string& locale) {
221 bool locale_file_path_exists = !GetLocaleFilePath(locale, true).empty();
222 #if defined(OS_ANDROID)
223 // TODO(mkosiba,primiano): Chrome should mmap the .pak files too, in which
224 // case we'd not need to check if locale_file_path_exists here.
225 // http://crbug.com/394502.
226 return locale_file_path_exists ||
227 AssetContainedInApk(locale + kPakFileSuffix);
229 return locale_file_path_exists;
233 void ResourceBundle::AddDataPackFromPath(const base::FilePath& path,
234 ScaleFactor scale_factor) {
235 AddDataPackFromPathInternal(path, scale_factor, false);
238 void ResourceBundle::AddOptionalDataPackFromPath(const base::FilePath& path,
239 ScaleFactor scale_factor) {
240 AddDataPackFromPathInternal(path, scale_factor, true);
243 void ResourceBundle::AddDataPackFromFile(base::File file,
244 ScaleFactor scale_factor) {
245 AddDataPackFromFileRegion(
246 file.Pass(), base::MemoryMappedFile::Region::kWholeFile, scale_factor);
249 void ResourceBundle::AddDataPackFromFileRegion(
251 const base::MemoryMappedFile::Region& region,
252 ScaleFactor scale_factor) {
253 scoped_ptr<DataPack> data_pack(
254 new DataPack(scale_factor));
255 if (data_pack->LoadFromFileRegion(file.Pass(), region)) {
256 AddDataPack(data_pack.release());
258 LOG(ERROR) << "Failed to load data pack from file."
259 << "\nSome features may not be available.";
263 #if !defined(OS_MACOSX)
264 base::FilePath ResourceBundle::GetLocaleFilePath(const std::string& app_locale,
265 bool test_file_exists) {
266 if (app_locale.empty())
267 return base::FilePath();
269 base::FilePath locale_file_path;
271 PathService::Get(ui::DIR_LOCALES, &locale_file_path);
273 if (!locale_file_path.empty()) {
275 locale_file_path.AppendASCII(app_locale + kPakFileSuffix);
280 delegate_->GetPathForLocalePack(locale_file_path, app_locale);
283 // Don't try to load empty values or values that are not absolute paths.
284 if (locale_file_path.empty() || !locale_file_path.IsAbsolute())
285 return base::FilePath();
287 if (test_file_exists && !base::PathExists(locale_file_path))
288 return base::FilePath();
290 return locale_file_path;
294 std::string ResourceBundle::LoadLocaleResources(
295 const std::string& pref_locale) {
296 DCHECK(!locale_resources_data_.get()) << "locale.pak already loaded";
297 std::string app_locale = l10n_util::GetApplicationLocale(pref_locale);
298 base::FilePath locale_file_path = GetOverriddenPakPath();
299 if (locale_file_path.empty())
300 locale_file_path = GetLocaleFilePath(app_locale, true);
302 if (locale_file_path.empty()) {
303 // It's possible that there is no locale.pak.
304 LOG(WARNING) << "locale_file_path.empty()";
305 return std::string();
308 scoped_ptr<DataPack> data_pack(
309 new DataPack(SCALE_FACTOR_100P));
310 if (!data_pack->LoadFromPath(locale_file_path)) {
311 UMA_HISTOGRAM_ENUMERATION("ResourceBundle.LoadLocaleResourcesError",
312 logging::GetLastSystemErrorCode(), 16000);
313 LOG(ERROR) << "failed to load locale.pak";
315 return std::string();
318 locale_resources_data_.reset(data_pack.release());
322 void ResourceBundle::LoadTestResources(const base::FilePath& path,
323 const base::FilePath& locale_path) {
324 // Use the given resource pak for both common and localized resources.
325 scoped_ptr<DataPack> data_pack(new DataPack(SCALE_FACTOR_100P));
326 if (!path.empty() && data_pack->LoadFromPath(path))
327 AddDataPack(data_pack.release());
329 data_pack.reset(new DataPack(ui::SCALE_FACTOR_NONE));
330 if (!locale_path.empty() && data_pack->LoadFromPath(locale_path)) {
331 locale_resources_data_.reset(data_pack.release());
333 locale_resources_data_.reset(new DataPack(ui::SCALE_FACTOR_NONE));
337 void ResourceBundle::UnloadLocaleResources() {
338 locale_resources_data_.reset();
341 void ResourceBundle::OverrideLocalePakForTest(const base::FilePath& pak_path) {
342 overridden_pak_path_ = pak_path;
345 void ResourceBundle::OverrideLocaleStringResource(
347 const base::string16& string) {
348 overridden_locale_strings_[message_id] = string;
351 const base::FilePath& ResourceBundle::GetOverriddenPakPath() {
352 return overridden_pak_path_;
355 std::string ResourceBundle::ReloadLocaleResources(
356 const std::string& pref_locale) {
357 base::AutoLock lock_scope(*locale_resources_data_lock_);
359 // Remove all overriden strings, as they will not be valid for the new locale.
360 overridden_locale_strings_.clear();
362 UnloadLocaleResources();
363 return LoadLocaleResources(pref_locale);
366 gfx::ImageSkia* ResourceBundle::GetImageSkiaNamed(int resource_id) {
367 const gfx::ImageSkia* image = GetImageNamed(resource_id).ToImageSkia();
368 return const_cast<gfx::ImageSkia*>(image);
371 gfx::Image& ResourceBundle::GetImageNamed(int resource_id) {
372 // Check to see if the image is already in the cache.
374 base::AutoLock lock_scope(*images_and_fonts_lock_);
375 if (images_.count(resource_id))
376 return images_[resource_id];
381 image = delegate_->GetImageNamed(resource_id);
383 if (image.IsEmpty()) {
384 DCHECK(!data_packs_.empty()) <<
385 "Missing call to SetResourcesDataDLL?";
387 #if defined(OS_CHROMEOS) || defined(OS_WIN)
388 ui::ScaleFactor scale_factor_to_load = GetMaxScaleFactor();
390 ui::ScaleFactor scale_factor_to_load = ui::SCALE_FACTOR_100P;
393 // TODO(oshima): Consider reading the image size from png IHDR chunk and
394 // skip decoding here and remove #ifdef below.
395 // ResourceBundle::GetSharedInstance() is destroyed after the
396 // BrowserMainLoop has finished running. |image_skia| is guaranteed to be
397 // destroyed before the resource bundle is destroyed.
398 gfx::ImageSkia image_skia(new ResourceBundleImageSource(this, resource_id),
399 GetScaleForScaleFactor(scale_factor_to_load));
400 if (image_skia.isNull()) {
401 LOG(WARNING) << "Unable to load image with id " << resource_id;
402 NOTREACHED(); // Want to assert in debug mode.
403 // The load failed to retrieve the image; show a debugging red square.
404 return GetEmptyImage();
406 image_skia.SetReadOnly();
407 image = gfx::Image(image_skia);
410 // The load was successful, so cache the image.
411 base::AutoLock lock_scope(*images_and_fonts_lock_);
413 // Another thread raced the load and has already cached the image.
414 if (images_.count(resource_id))
415 return images_[resource_id];
417 images_[resource_id] = image;
418 return images_[resource_id];
421 gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id) {
422 return GetNativeImageNamed(resource_id, RTL_DISABLED);
425 base::RefCountedStaticMemory* ResourceBundle::LoadDataResourceBytes(
426 int resource_id) const {
427 return LoadDataResourceBytesForScale(resource_id, ui::SCALE_FACTOR_NONE);
430 base::RefCountedStaticMemory* ResourceBundle::LoadDataResourceBytesForScale(
432 ScaleFactor scale_factor) const {
433 base::RefCountedStaticMemory* bytes = NULL;
435 bytes = delegate_->LoadDataResourceBytes(resource_id, scale_factor);
438 base::StringPiece data =
439 GetRawDataResourceForScale(resource_id, scale_factor);
441 bytes = new base::RefCountedStaticMemory(data.data(), data.length());
448 base::StringPiece ResourceBundle::GetRawDataResource(int resource_id) const {
449 return GetRawDataResourceForScale(resource_id, ui::SCALE_FACTOR_NONE);
452 base::StringPiece ResourceBundle::GetRawDataResourceForScale(
454 ScaleFactor scale_factor) const {
455 base::StringPiece data;
457 delegate_->GetRawDataResource(resource_id, scale_factor, &data))
460 if (scale_factor != ui::SCALE_FACTOR_100P) {
461 for (size_t i = 0; i < data_packs_.size(); i++) {
462 if (data_packs_[i]->GetScaleFactor() == scale_factor &&
463 data_packs_[i]->GetStringPiece(resource_id, &data))
467 for (size_t i = 0; i < data_packs_.size(); i++) {
468 if ((data_packs_[i]->GetScaleFactor() == ui::SCALE_FACTOR_100P ||
469 data_packs_[i]->GetScaleFactor() == ui::SCALE_FACTOR_200P ||
470 data_packs_[i]->GetScaleFactor() == ui::SCALE_FACTOR_NONE) &&
471 data_packs_[i]->GetStringPiece(resource_id, &data))
475 return base::StringPiece();
478 base::string16 ResourceBundle::GetLocalizedString(int message_id) {
479 base::string16 string;
480 if (delegate_ && delegate_->GetLocalizedString(message_id, &string))
483 // Ensure that ReloadLocaleResources() doesn't drop the resources while
485 base::AutoLock lock_scope(*locale_resources_data_lock_);
487 IdToStringMap::const_iterator it =
488 overridden_locale_strings_.find(message_id);
489 if (it != overridden_locale_strings_.end())
492 // If for some reason we were unable to load the resources , return an empty
493 // string (better than crashing).
494 if (!locale_resources_data_.get()) {
495 LOG(WARNING) << "locale resources are not loaded";
496 return base::string16();
499 base::StringPiece data;
500 if (!locale_resources_data_->GetStringPiece(message_id, &data)) {
501 // Fall back on the main data pack (shouldn't be any strings here except in
503 data = GetRawDataResource(message_id);
505 NOTREACHED() << "unable to find resource: " << message_id;
506 return base::string16();
510 // Strings should not be loaded from a data pack that contains binary data.
511 ResourceHandle::TextEncodingType encoding =
512 locale_resources_data_->GetTextEncodingType();
513 DCHECK(encoding == ResourceHandle::UTF16 || encoding == ResourceHandle::UTF8)
514 << "requested localized string from binary pack file";
516 // Data pack encodes strings as either UTF8 or UTF16.
518 if (encoding == ResourceHandle::UTF16) {
519 msg = base::string16(reinterpret_cast<const base::char16*>(data.data()),
521 } else if (encoding == ResourceHandle::UTF8) {
522 msg = base::UTF8ToUTF16(data);
527 const gfx::FontList& ResourceBundle::GetFontList(FontStyle style) {
529 base::AutoLock lock_scope(*images_and_fonts_lock_);
530 LoadFontsIfNecessary();
534 return *bold_font_list_;
536 return *small_font_list_;
538 return *medium_font_list_;
540 return *small_bold_font_list_;
542 return *medium_bold_font_list_;
544 return *large_font_list_;
546 return *large_bold_font_list_;
548 return *base_font_list_;
552 const gfx::Font& ResourceBundle::GetFont(FontStyle style) {
553 return GetFontList(style).GetPrimaryFont();
556 void ResourceBundle::ReloadFonts() {
557 base::AutoLock lock_scope(*images_and_fonts_lock_);
558 base_font_list_.reset();
559 LoadFontsIfNecessary();
562 ScaleFactor ResourceBundle::GetMaxScaleFactor() const {
563 #if defined(OS_CHROMEOS) || defined(OS_WIN)
564 return max_scale_factor_;
566 return GetSupportedScaleFactors().back();
570 bool ResourceBundle::IsScaleFactorSupported(ScaleFactor scale_factor) {
571 const std::vector<ScaleFactor>& supported_scale_factors =
572 ui::GetSupportedScaleFactors();
573 return std::find(supported_scale_factors.begin(),
574 supported_scale_factors.end(),
575 scale_factor) != supported_scale_factors.end();
578 ResourceBundle::ResourceBundle(Delegate* delegate)
579 : delegate_(delegate),
580 images_and_fonts_lock_(new base::Lock),
581 locale_resources_data_lock_(new base::Lock),
582 max_scale_factor_(SCALE_FACTOR_100P) {
585 ResourceBundle::~ResourceBundle() {
587 UnloadLocaleResources();
591 void ResourceBundle::InitSharedInstance(Delegate* delegate) {
592 DCHECK(g_shared_instance_ == NULL) << "ResourceBundle initialized twice";
593 g_shared_instance_ = new ResourceBundle(delegate);
594 static std::vector<ScaleFactor> supported_scale_factors;
595 #if !defined(OS_IOS) && !defined(OS_WIN)
596 // On platforms other than iOS, 100P is always a supported scale factor.
597 // For Windows we have a separate case in this function.
598 supported_scale_factors.push_back(SCALE_FACTOR_100P);
600 #if defined(OS_ANDROID)
601 const gfx::Display display =
602 gfx::Screen::GetNativeScreen()->GetPrimaryDisplay();
603 const float display_density = display.device_scale_factor();
604 const ScaleFactor closest = FindClosestScaleFactorUnsafe(display_density);
605 if (closest != SCALE_FACTOR_100P)
606 supported_scale_factors.push_back(closest);
607 #elif defined(OS_IOS)
608 gfx::Display display = gfx::Screen::GetNativeScreen()->GetPrimaryDisplay();
609 if (display.device_scale_factor() > 1.0) {
610 DCHECK_EQ(2.0, display.device_scale_factor());
611 supported_scale_factors.push_back(SCALE_FACTOR_200P);
613 supported_scale_factors.push_back(SCALE_FACTOR_100P);
615 #elif defined(OS_MACOSX)
616 if (base::mac::IsOSLionOrLater())
617 supported_scale_factors.push_back(SCALE_FACTOR_200P);
618 #elif defined(OS_CHROMEOS)
619 // TODO(oshima): Include 200P only if the device support 200P
620 supported_scale_factors.push_back(SCALE_FACTOR_200P);
621 #elif defined(OS_LINUX) && defined(ENABLE_HIDPI)
622 supported_scale_factors.push_back(SCALE_FACTOR_200P);
623 #elif defined(OS_WIN)
624 bool default_to_100P = true;
625 if (gfx::IsHighDPIEnabled()) {
626 // On Windows if the dpi scale is greater than 1.25 on high dpi machines
627 // downscaling from 200 percent looks better than scaling up from 100
629 if (gfx::GetDPIScale() > 1.25) {
630 supported_scale_factors.push_back(SCALE_FACTOR_200P);
631 default_to_100P = false;
635 supported_scale_factors.push_back(SCALE_FACTOR_100P);
637 ui::SetSupportedScaleFactors(supported_scale_factors);
639 // Must be called _after_ supported scale factors are set since it
641 // Don't initialize the device scale factor if it has already been
643 if (!gfx::win::IsDeviceScaleFactorSet())
644 ui::win::InitDeviceScaleFactor();
648 void ResourceBundle::FreeImages() {
652 void ResourceBundle::AddDataPackFromPathInternal(const base::FilePath& path,
653 ScaleFactor scale_factor,
655 // Do not pass an empty |path| value to this method. If the absolute path is
656 // unknown pass just the pack file name.
657 DCHECK(!path.empty());
659 base::FilePath pack_path = path;
661 pack_path = delegate_->GetPathForResourcePack(pack_path, scale_factor);
663 // Don't try to load empty values or values that are not absolute paths.
664 if (pack_path.empty() || !pack_path.IsAbsolute())
667 scoped_ptr<DataPack> data_pack(
668 new DataPack(scale_factor));
669 if (data_pack->LoadFromPath(pack_path)) {
670 AddDataPack(data_pack.release());
671 } else if (!optional) {
672 LOG(ERROR) << "Failed to load " << pack_path.value()
673 << "\nSome features may not be available.";
677 void ResourceBundle::AddDataPack(DataPack* data_pack) {
678 data_packs_.push_back(data_pack);
680 if (GetScaleForScaleFactor(data_pack->GetScaleFactor()) >
681 GetScaleForScaleFactor(max_scale_factor_))
682 max_scale_factor_ = data_pack->GetScaleFactor();
685 void ResourceBundle::LoadFontsIfNecessary() {
686 images_and_fonts_lock_->AssertAcquired();
687 if (!base_font_list_.get()) {
689 base_font_list_ = GetFontListFromDelegate(BaseFont);
690 bold_font_list_ = GetFontListFromDelegate(BoldFont);
691 small_font_list_ = GetFontListFromDelegate(SmallFont);
692 small_bold_font_list_ = GetFontListFromDelegate(SmallBoldFont);
693 medium_font_list_ = GetFontListFromDelegate(MediumFont);
694 medium_bold_font_list_ = GetFontListFromDelegate(MediumBoldFont);
695 large_font_list_ = GetFontListFromDelegate(LargeFont);
696 large_bold_font_list_ = GetFontListFromDelegate(LargeBoldFont);
699 if (!base_font_list_.get())
700 base_font_list_.reset(new gfx::FontList());
702 if (!bold_font_list_.get()) {
703 bold_font_list_.reset(new gfx::FontList());
704 *bold_font_list_ = base_font_list_->DeriveWithStyle(
705 base_font_list_->GetFontStyle() | gfx::Font::BOLD);
708 if (!small_font_list_.get()) {
709 small_font_list_.reset(new gfx::FontList());
711 base_font_list_->DeriveWithSizeDelta(kSmallFontSizeDelta);
714 if (!small_bold_font_list_.get()) {
715 small_bold_font_list_.reset(new gfx::FontList());
716 *small_bold_font_list_ = small_font_list_->DeriveWithStyle(
717 small_font_list_->GetFontStyle() | gfx::Font::BOLD);
720 if (!medium_font_list_.get()) {
721 medium_font_list_.reset(new gfx::FontList());
723 base_font_list_->DeriveWithSizeDelta(kMediumFontSizeDelta);
726 if (!medium_bold_font_list_.get()) {
727 medium_bold_font_list_.reset(new gfx::FontList());
728 *medium_bold_font_list_ = medium_font_list_->DeriveWithStyle(
729 medium_font_list_->GetFontStyle() | gfx::Font::BOLD);
732 if (!large_font_list_.get()) {
733 large_font_list_.reset(new gfx::FontList());
735 base_font_list_->DeriveWithSizeDelta(kLargeFontSizeDelta);
738 if (!large_bold_font_list_.get()) {
739 large_bold_font_list_.reset(new gfx::FontList());
740 *large_bold_font_list_ = large_font_list_->DeriveWithStyle(
741 large_font_list_->GetFontStyle() | gfx::Font::BOLD);
746 scoped_ptr<gfx::FontList> ResourceBundle::GetFontListFromDelegate(
749 scoped_ptr<gfx::Font> font = delegate_->GetFont(style);
751 return scoped_ptr<gfx::FontList>(new gfx::FontList(*font));
752 return scoped_ptr<gfx::FontList>();
755 bool ResourceBundle::LoadBitmap(const ResourceHandle& data_handle,
758 bool* fell_back_to_1x) const {
759 DCHECK(fell_back_to_1x);
760 scoped_refptr<base::RefCountedMemory> memory(
761 data_handle.GetStaticMemory(resource_id));
765 if (DecodePNG(memory->front(), memory->size(), bitmap, fell_back_to_1x))
769 // iOS does not compile or use the JPEG codec. On other platforms,
770 // 99% of our assets are PNGs, however fallback to JPEG.
771 scoped_ptr<SkBitmap> jpeg_bitmap(
772 gfx::JPEGCodec::Decode(memory->front(), memory->size()));
773 if (jpeg_bitmap.get()) {
774 bitmap->swap(*jpeg_bitmap.get());
775 *fell_back_to_1x = false;
780 NOTREACHED() << "Unable to decode theme image resource " << resource_id;
784 bool ResourceBundle::LoadBitmap(int resource_id,
785 ScaleFactor* scale_factor,
787 bool* fell_back_to_1x) const {
788 DCHECK(fell_back_to_1x);
789 for (size_t i = 0; i < data_packs_.size(); ++i) {
790 if (data_packs_[i]->GetScaleFactor() == ui::SCALE_FACTOR_NONE &&
791 LoadBitmap(*data_packs_[i], resource_id, bitmap, fell_back_to_1x)) {
792 DCHECK(!*fell_back_to_1x);
793 *scale_factor = ui::SCALE_FACTOR_NONE;
796 if (data_packs_[i]->GetScaleFactor() == *scale_factor &&
797 LoadBitmap(*data_packs_[i], resource_id, bitmap, fell_back_to_1x)) {
804 gfx::Image& ResourceBundle::GetEmptyImage() {
805 base::AutoLock lock(*images_and_fonts_lock_);
807 if (empty_image_.IsEmpty()) {
808 // The placeholder bitmap is bright red so people notice the problem.
810 bitmap.allocN32Pixels(32, 32);
811 bitmap.eraseARGB(255, 255, 0, 0);
812 empty_image_ = gfx::Image::CreateFrom1xBitmap(bitmap);
818 bool ResourceBundle::PNGContainsFallbackMarker(const unsigned char* buf,
820 if (size < arraysize(kPngMagic) ||
821 memcmp(buf, kPngMagic, arraysize(kPngMagic)) != 0) {
822 // Data invalid or a JPEG.
825 size_t pos = arraysize(kPngMagic);
827 // Scan for custom chunks until we find one, find the IDAT chunk, or run out
830 if (size - pos < kPngChunkMetadataSize)
833 base::ReadBigEndian(reinterpret_cast<const char*>(buf + pos), &length);
834 if (size - pos - kPngChunkMetadataSize < length)
836 if (length == 0 && memcmp(buf + pos + sizeof(uint32), kPngScaleChunkType,
837 arraysize(kPngScaleChunkType)) == 0) {
840 if (memcmp(buf + pos + sizeof(uint32), kPngDataChunkType,
841 arraysize(kPngDataChunkType)) == 0) {
842 // Stop looking for custom chunks, any custom chunks should be before an
846 pos += length + kPngChunkMetadataSize;
852 bool ResourceBundle::DecodePNG(const unsigned char* buf,
855 bool* fell_back_to_1x) {
856 *fell_back_to_1x = PNGContainsFallbackMarker(buf, size);
857 return gfx::PNGCodec::Decode(buf, size, bitmap);