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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 "chrome/common/resource_bundle.h"
#include <gtk/gtk.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 "chrome/common/chrome_paths.h"
#include "chrome/common/gfx/chrome_font.h"
#include "chrome/common/l10n_util.h"
ResourceBundle::~ResourceBundle() {
FreeImages();
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(chrome::DIR_LOCALES, &locale_path);
const std::wstring app_locale = l10n_util::GetApplicationLocale(pref_locale);
if (app_locale.empty())
return FilePath();
return locale_path.Append(WideToASCII(app_locale + L".pak"));
}
void ResourceBundle::LoadThemeResources() {
FilePath theme_data_path;
PathService::Get(chrome::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);
StringPiece data;
if (!module->Get(resource_id, &data))
return false;
bytes->resize(data.length());
memcpy(&(bytes->front()), data.data(), data.length());
return true;
}
StringPiece ResourceBundle::GetRawDataResource(int resource_id) {
DCHECK(resources_data_);
StringPiece data;
if (!resources_data_->Get(resource_id, &data))
return StringPiece();
return data;
}
std::wstring 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 std::wstring();
}
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 std::wstring();
}
}
// Data pack encodes strings as UTF16.
string16 msg(reinterpret_cast<const char16*>(data.data()),
data.length() / 2);
return UTF16ToWide(msg);
}
GdkPixbuf* ResourceBundle::LoadPixbuf(int resource_id) {
ResourceBundle& rb = ResourceBundle::GetSharedInstance();
std::vector<unsigned char> data;
rb.LoadImageResourceBytes(resource_id, &data);
GdkPixbufLoader* loader = gdk_pixbuf_loader_new();
bool ok = gdk_pixbuf_loader_write(loader, static_cast<guint8*>(data.data()),
data.size(), NULL);
DCHECK(ok) << "failed to write " << resource_id;
// 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, NULL);
DCHECK(ok) << "close failed " << resource_id;
GdkPixbuf* pixbuf = gdk_pixbuf_loader_get_pixbuf(loader);
DCHECK(pixbuf) << "failed to load " << resource_id << " " << data.size();
// The pixbuf is owned by the loader, so add a ref so when we delete the
// loader, the pixbuf still exists.
g_object_ref(pixbuf);
g_object_unref(loader);
return pixbuf;
}
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