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// Copyright 2015 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/browser/ui/webui/large_icon_source.h"
#include <string>
#include <vector>
#include "base/memory/ref_counted_memory.h"
#include "chrome/browser/favicon/favicon_service_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search/instant_io_context.h"
#include "chrome/common/favicon/large_icon_url_parser.h"
#include "chrome/common/url_constants.h"
#include "components/favicon/core/favicon_service.h"
#include "components/favicon_base/fallback_icon_style.h"
#include "grit/platform_locale_settings.h"
#include "net/url_request/url_request.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/base/l10n/l10n_util.h"
namespace {
int kDefaultLargeIconSize = 96;
int kMaxLargeIconSize = 192; // Arbitrary bound to safeguard endpoint.
} // namespace
LargeIconSource::IconRequest::IconRequest() : size(kDefaultLargeIconSize) {
}
LargeIconSource::IconRequest::IconRequest(
const content::URLDataSource::GotDataCallback& callback_in,
const GURL& url_in,
int size_in)
: callback(callback_in),
url(url_in),
size(size_in) {
}
LargeIconSource::IconRequest::~IconRequest() {
}
LargeIconSource::LargeIconSource(Profile* profile) : profile_(profile) {
std::vector<std::string> font_list;
#if defined(OS_CHROMEOS)
font_list.push_back("Noto Sans");
#elif defined(OS_IOS)
font_list.push_back("Helvetica Neue");
#else
font_list.push_back(l10n_util::GetStringUTF8(IDS_SANS_SERIF_FONT_FAMILY));
#endif
fallback_icon_service_.reset(
new favicon_base::FallbackIconService(font_list));
}
LargeIconSource::~LargeIconSource() {
}
std::string LargeIconSource::GetSource() const {
return chrome::kChromeUILargeIconHost;
}
void LargeIconSource::StartDataRequest(
const std::string& path,
int render_process_id,
int render_frame_id,
const content::URLDataSource::GotDataCallback& callback) {
LargeIconUrlParser parser;
bool success = parser.Parse(path);
if (!success || parser.size_in_pixels() <= 0 ||
parser.size_in_pixels() > kMaxLargeIconSize) {
SendNotFoundResponse(callback);
return;
}
FaviconService* favicon_service = FaviconServiceFactory::GetForProfile(
profile_, ServiceAccessType::EXPLICIT_ACCESS);
if (!favicon_service) {
SendNotFoundResponse(callback);
return;
}
GURL url(parser.url_string());
if (!url.is_valid()) {
SendNotFoundResponse(callback);
return;
}
favicon_service->GetRawFaviconForPageURL(
url,
favicon_base::TOUCH_ICON | favicon_base::TOUCH_PRECOMPOSED_ICON,
parser.size_in_pixels(),
base::Bind(
&LargeIconSource::OnIconDataAvailable,
base::Unretained(this),
IconRequest(callback, url, parser.size_in_pixels())),
&cancelable_task_tracker_);
}
std::string LargeIconSource::GetMimeType(const std::string&) const {
// We need to explicitly return a mime type, otherwise if the user tries to
// drag the image they get no extension.
return "image/png";
}
bool LargeIconSource::ShouldReplaceExistingSource() const {
// Leave the existing DataSource in place, otherwise we'll drop any pending
// requests on the floor.
return false;
}
bool LargeIconSource::ShouldServiceRequest(
const net::URLRequest* request) const {
if (request->url().SchemeIs(chrome::kChromeSearchScheme))
return InstantIOContext::ShouldServiceRequest(request);
return URLDataSource::ShouldServiceRequest(request);
}
void LargeIconSource::OnIconDataAvailable(
const IconRequest& request,
const favicon_base::FaviconRawBitmapResult& bitmap_result) {
if (!bitmap_result.is_valid())
SendFallbackIcon(request);
else
request.callback.Run(bitmap_result.bitmap_data.get());
}
void LargeIconSource::SendFallbackIcon(const IconRequest& request) {
favicon_base::FallbackIconStyle style;
style.background_color = SkColorSetRGB(0xcc, 0xcc, 0xcc);
favicon_base::MatchFallbackIconTextColorAgainstBackgroundColor(&style);
style.roundness = 1.0;
std::vector<unsigned char> bitmap_data =
fallback_icon_service_->RenderFallbackIconBitmap(
request.url, request.size, style);
request.callback.Run(base::RefCountedBytes::TakeVector(&bitmap_data));
}
void LargeIconSource::SendNotFoundResponse(
const content::URLDataSource::GotDataCallback& callback) {
callback.Run(nullptr);
}
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