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// Copyright (c) 2012 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 "ui/webui/web_ui_util.h"
#include <vector>
#include "base/base64.h"
#include "base/debug/trace_event.h"
#include "base/i18n/rtl.h"
#include "base/logging.h"
#include "base/memory/ref_counted_memory.h"
#include "base/strings/string_number_conversions.h"
#include "grit/app_locale_settings.h"
#include "net/base/escape.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/window_open_disposition.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/font.h"
#include "ui/gfx/image/image_skia.h"
#include "url/gurl.h"
#if defined(OS_WIN)
#include "base/win/windows_version.h"
#endif
namespace webui {
std::string GetBitmapDataUrl(const SkBitmap& bitmap) {
TRACE_EVENT2("oobe", "GetImageDataUrl",
"width", bitmap.width(), "height", bitmap.height());
std::vector<unsigned char> output;
gfx::PNGCodec::EncodeBGRASkBitmap(bitmap, false, &output);
std::string str_url;
str_url.insert(str_url.end(), output.begin(), output.end());
base::Base64Encode(str_url, &str_url);
str_url.insert(0, "data:image/png;base64,");
return str_url;
}
std::string GetBitmapDataUrlFromResource(int res) {
// Load resource icon and covert to base64 encoded data url
base::RefCountedStaticMemory* icon_data =
ResourceBundle::GetSharedInstance().LoadDataResourceBytesForScale(
res, ui::SCALE_FACTOR_100P);
if (!icon_data)
return std::string();
scoped_refptr<base::RefCountedMemory> raw_icon(icon_data);
std::string str_url;
str_url.insert(str_url.end(),
raw_icon->front(),
raw_icon->front() + raw_icon->size());
base::Base64Encode(str_url, &str_url);
str_url.insert(0, "data:image/png;base64,");
return str_url;
}
WindowOpenDisposition GetDispositionFromClick(const base::ListValue* args,
int start_index) {
double button = 0.0;
bool alt_key = false;
bool ctrl_key = false;
bool meta_key = false;
bool shift_key = false;
CHECK(args->GetDouble(start_index++, &button));
CHECK(args->GetBoolean(start_index++, &alt_key));
CHECK(args->GetBoolean(start_index++, &ctrl_key));
CHECK(args->GetBoolean(start_index++, &meta_key));
CHECK(args->GetBoolean(start_index++, &shift_key));
return ui::DispositionFromClick(
button == 1.0, alt_key, ctrl_key, meta_key, shift_key);
}
bool ParseScaleFactor(const base::StringPiece& identifier,
ui::ScaleFactor* scale_factor) {
*scale_factor = ui::SCALE_FACTOR_100P;
if (identifier.empty()) {
LOG(ERROR) << "Invalid scale factor format: " << identifier;
return false;
}
if (*identifier.rbegin() != 'x') {
LOG(ERROR) << "Invalid scale factor format: " << identifier;
return false;
}
double scale = 0;
std::string stripped;
identifier.substr(0, identifier.length() - 1).CopyToString(&stripped);
if (!base::StringToDouble(stripped, &scale)) {
LOG(ERROR) << "Invalid scale factor format: " << identifier;
return false;
}
*scale_factor = ui::GetScaleFactorFromScale(static_cast<float>(scale));
return true;
}
void ParsePathAndScale(const GURL& url,
std::string* path,
ui::ScaleFactor* scale_factor) {
*path = net::UnescapeURLComponent(url.path().substr(1),
(net::UnescapeRule::URL_SPECIAL_CHARS |
net::UnescapeRule::SPACES));
if (scale_factor)
*scale_factor = ui::SCALE_FACTOR_100P;
// Detect and parse resource string ending in @<scale>x.
std::size_t pos = path->rfind('@');
if (pos != std::string::npos) {
base::StringPiece stripped_path(*path);
ui::ScaleFactor factor;
if (ParseScaleFactor(stripped_path.substr(
pos + 1, stripped_path.length() - pos - 1), &factor)) {
// Strip scale factor specification from path.
stripped_path.remove_suffix(stripped_path.length() - pos);
stripped_path.CopyToString(path);
}
if (scale_factor)
*scale_factor = factor;
}
}
// static
void SetFontAndTextDirection(base::DictionaryValue* localized_strings) {
int web_font_family_id = IDS_WEB_FONT_FAMILY;
int web_font_size_id = IDS_WEB_FONT_SIZE;
#if defined(OS_WIN)
// Vary font settings for Windows XP.
if (base::win::GetVersion() < base::win::VERSION_VISTA) {
web_font_family_id = IDS_WEB_FONT_FAMILY_XP;
web_font_size_id = IDS_WEB_FONT_SIZE_XP;
}
#endif
std::string font_family = l10n_util::GetStringUTF8(web_font_family_id);
#if defined(TOOLKIT_GTK)
// Use the system font on Linux/GTK. Keep the hard-coded font families as
// backup in case for some crazy reason this one isn't available.
font_family = ui::ResourceBundle::GetSharedInstance().GetFont(
ui::ResourceBundle::BaseFont).GetFontName() + ", " + font_family;
#endif
localized_strings->SetString("fontfamily", font_family);
localized_strings->SetString("fontsize",
l10n_util::GetStringUTF8(web_font_size_id));
localized_strings->SetString("textdirection",
base::i18n::IsRTL() ? "rtl" : "ltr");
}
} // namespace webui
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