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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 "chrome/common/pref_names_util.h"
#include <stddef.h>
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_service.h"
#include "ui/native_theme/native_theme.h"
namespace {
// Adds !important to all captions styles. They should always override any
// styles added by the video author or by a user stylesheet. This is because in
// Chrome, there is an option to turn off captions styles, so any time the
// captions are on, the styles should take priority.
std::string AddCSSImportant(std::string css_string) {
return css_string.empty() ? "" : css_string + " !important";
}
} // namespace
namespace pref_names_util {
const char kWebKitFontPrefPrefix[] = "webkit.webprefs.fonts.";
bool ParseFontNamePrefPath(const std::string& pref_path,
std::string* generic_family,
std::string* script) {
if (!base::StartsWith(pref_path, kWebKitFontPrefPrefix,
base::CompareCase::SENSITIVE))
return false;
size_t start = strlen(kWebKitFontPrefPrefix);
size_t pos = pref_path.find('.', start);
if (pos == std::string::npos || pos + 1 == pref_path.length())
return false;
if (generic_family)
*generic_family = pref_path.substr(start, pos - start);
if (script)
*script = pref_path.substr(pos + 1);
return true;
}
base::Optional<ui::CaptionStyle> GetCaptionStyleFromPrefs(PrefService* prefs) {
if (!prefs) {
return base::nullopt;
}
ui::CaptionStyle style;
style.text_size =
AddCSSImportant(prefs->GetString(prefs::kAccessibilityCaptionsTextSize));
style.font_family =
AddCSSImportant(prefs->GetString(prefs::kAccessibilityCaptionsTextFont));
if (!prefs->GetString(prefs::kAccessibilityCaptionsTextColor).empty()) {
std::string text_color = base::StringPrintf(
"rgba(%s,%s)",
prefs->GetString(prefs::kAccessibilityCaptionsTextColor).c_str(),
base::NumberToString(
prefs->GetInteger(prefs::kAccessibilityCaptionsTextOpacity) / 100.0)
.c_str());
style.text_color = AddCSSImportant(text_color);
}
if (!prefs->GetString(prefs::kAccessibilityCaptionsBackgroundColor).empty()) {
std::string background_color = base::StringPrintf(
"rgba(%s,%s)",
prefs->GetString(prefs::kAccessibilityCaptionsBackgroundColor).c_str(),
base::NumberToString(
prefs->GetInteger(prefs::kAccessibilityCaptionsBackgroundOpacity) /
100.0)
.c_str());
style.background_color = AddCSSImportant(background_color);
}
style.text_shadow = AddCSSImportant(
prefs->GetString(prefs::kAccessibilityCaptionsTextShadow));
return style;
}
} // namespace pref_names_util
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