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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "app/resource_bundle.h"
#include <gtk/gtk.h>
#include "app/app_paths.h"
#include "app/gfx/font.h"
#include "app/gfx/gtk_util.h"
#include "app/l10n_util.h"
#include "base/base_paths.h"
#include "base/data_pack.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "base/string_piece.h"
#include "base/string_util.h"
#include "third_party/skia/include/core/SkBitmap.h"
namespace {
// Convert the raw image data into a GdkPixbuf. The GdkPixbuf that is returned
// has a ref count of 1 so the caller must call g_object_unref to free the
// memory.
GdkPixbuf* LoadPixbuf(std::vector<unsigned char>& data, bool rtl_enabled) {
ScopedGObject<GdkPixbufLoader>::Type loader(gdk_pixbuf_loader_new());
bool ok = gdk_pixbuf_loader_write(loader.get(),
static_cast<guint8*>(data.data()), data.size(), NULL);
if (!ok)
return NULL;
// Calling gdk_pixbuf_loader_close forces the data to be parsed by the
// loader. We must do this before calling gdk_pixbuf_loader_get_pixbuf.
ok = gdk_pixbuf_loader_close(loader.get(), NULL);
if (!ok)
return NULL;
GdkPixbuf* pixbuf = gdk_pixbuf_loader_get_pixbuf(loader.get());
if (!pixbuf)
return NULL;
if ((l10n_util::GetTextDirection() == l10n_util::RIGHT_TO_LEFT) &&
rtl_enabled) {
// |pixbuf| will get unreffed and destroyed (see below). The returned value
// has ref count 1.
return gdk_pixbuf_flip(pixbuf, TRUE);
} else {
// The pixbuf is owned by the loader, so add a ref so when we delete the
// loader (when the ScopedGObject goes out of scope), the pixbuf still
// exists.
g_object_ref(pixbuf);
return pixbuf;
}
}
} // namespace
ResourceBundle::~ResourceBundle() {
FreeImages();
// Free GdkPixbufs.
for (GdkPixbufMap::iterator i = gdk_pixbufs_.begin();
i != gdk_pixbufs_.end(); i++) {
g_object_unref(i->second);
}
gdk_pixbufs_.clear();
delete locale_resources_data_;
locale_resources_data_ = NULL;
delete theme_data_;
theme_data_ = NULL;
delete resources_data_;
resources_data_ = NULL;
}
void ResourceBundle::LoadResources(const std::wstring& pref_locale) {
FilePath resources_data_path;
PathService::Get(base::DIR_EXE, &resources_data_path);
resources_data_path = resources_data_path.Append(
FILE_PATH_LITERAL("chrome.pak"));
DCHECK(resources_data_ == NULL) << "resource data already loaded!";
resources_data_ = new base::DataPack;
bool success = resources_data_->Load(resources_data_path);
DCHECK(success) << "failed to load chrome.pak";
DCHECK(locale_resources_data_ == NULL) << "locale data already loaded!";
const FilePath& locale_path = GetLocaleFilePath(pref_locale);
if (locale_path.value().empty()) {
// It's possible that there are no locale dlls found, in which case we just
// return.
NOTREACHED();
return;
}
locale_resources_data_ = new base::DataPack;
success = locale_resources_data_->Load(locale_path);
DCHECK(success) << "failed to load locale pak file";
}
FilePath ResourceBundle::GetLocaleFilePath(const std::wstring& pref_locale) {
FilePath locale_path;
PathService::Get(app::DIR_LOCALES, &locale_path);
const std::string app_locale = l10n_util::GetApplicationLocale(pref_locale);
if (app_locale.empty())
return FilePath();
return locale_path.AppendASCII(app_locale + ".pak");
}
void ResourceBundle::LoadThemeResources() {
FilePath theme_data_path;
PathService::Get(app::DIR_THEMES, &theme_data_path);
theme_data_path = theme_data_path.Append(FILE_PATH_LITERAL("default.pak"));
theme_data_ = new base::DataPack;
bool success = theme_data_->Load(theme_data_path);
DCHECK(success) << "failed to load theme data";
}
/* static */
bool ResourceBundle::LoadResourceBytes(DataHandle module, int resource_id,
std::vector<unsigned char>* bytes) {
DCHECK(module);
base::StringPiece data;
if (!module->Get(resource_id, &data))
return false;
bytes->resize(data.length());
memcpy(&(bytes->front()), data.data(), data.length());
return true;
}
base::StringPiece ResourceBundle::GetRawDataResource(int resource_id) {
DCHECK(resources_data_);
base::StringPiece data;
if (!resources_data_->Get(resource_id, &data))
return base::StringPiece();
return data;
}
string16 ResourceBundle::GetLocalizedString(int message_id) {
// If for some reason we were unable to load a resource dll, return an empty
// string (better than crashing).
if (!locale_resources_data_) {
LOG(WARNING) << "locale resources are not loaded";
return string16();
}
base::StringPiece data;
if (!locale_resources_data_->Get(message_id, &data)) {
// Fall back on the main data pack (shouldn't be any strings here except in
// unittests).
data = GetRawDataResource(message_id);
if (data.empty()) {
NOTREACHED() << "unable to find resource: " << message_id;
return string16();
}
}
// Data pack encodes strings as UTF16.
string16 msg(reinterpret_cast<const char16*>(data.data()),
data.length() / 2);
return msg;
}
GdkPixbuf* ResourceBundle::GetPixbufImpl(int resource_id, bool rtl_enabled) {
// Use the negative |resource_id| for the key for BIDI-aware images.
int key = rtl_enabled ? -resource_id : resource_id;
// Check to see if we already have the pixbuf in the cache.
{
AutoLock lock_scope(lock_);
GdkPixbufMap::const_iterator found = gdk_pixbufs_.find(key);
if (found != gdk_pixbufs_.end())
return found->second;
}
std::vector<unsigned char> data;
LoadImageResourceBytes(resource_id, &data);
GdkPixbuf* pixbuf = LoadPixbuf(data, rtl_enabled);
// We loaded successfully. Cache the pixbuf.
if (pixbuf) {
AutoLock lock_scope(lock_);
// Another thread raced us, and has already cached the pixbuf.
if (gdk_pixbufs_.count(key)) {
g_object_unref(pixbuf);
return gdk_pixbufs_[key];
}
gdk_pixbufs_[key] = pixbuf;
return pixbuf;
}
// We failed to retrieve the bitmap, show a debugging red square.
{
LOG(WARNING) << "Unable to load GdkPixbuf with id " << resource_id;
NOTREACHED(); // Want to assert in debug mode.
AutoLock lock_scope(lock_); // Guard empty_bitmap initialization.
static GdkPixbuf* empty_bitmap = NULL;
if (!empty_bitmap) {
// The placeholder bitmap is bright red so people notice the problem.
// This bitmap will be leaked, but this code should never be hit.
scoped_ptr<SkBitmap> skia_bitmap(new SkBitmap());
skia_bitmap->setConfig(SkBitmap::kARGB_8888_Config, 32, 32);
skia_bitmap->allocPixels();
skia_bitmap->eraseARGB(255, 255, 0, 0);
empty_bitmap = gfx::GdkPixbufFromSkBitmap(skia_bitmap.get());
}
return empty_bitmap;
}
}
GdkPixbuf* ResourceBundle::GetPixbufNamed(int resource_id) {
return GetPixbufImpl(resource_id, false);
}
GdkPixbuf* ResourceBundle::GetRTLEnabledPixbufNamed(int resource_id) {
return GetPixbufImpl(resource_id, true);
}
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