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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/apps/almanac_api_client/almanac_app_icon_loader.h"
#include "base/functional/bind.h"
#include "base/one_shot_event.h"
#include "base/strings/string_util.h"
#include "chrome/browser/apps/almanac_api_client/almanac_icon_cache.h"
#include "chrome/browser/apps/app_service/app_icon/app_icon_factory.h"
#include "chrome/browser/image_fetcher/image_fetcher_service_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_key.h"
#include "components/services/app_service/public/cpp/icon_effects.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "ui/gfx/image/image.h"
#include "url/gurl.h"
namespace apps {
namespace {
constexpr int kSvgRasterSize = 192;
bool IsSvgExtension(const GURL& icon_url, std::string_view icon_mime_type) {
std::string url_string = icon_url.spec();
return icon_mime_type.empty()
? base::EndsWith(url_string, ".svg", base::CompareCase::SENSITIVE)
: icon_mime_type == "image/svg+xml";
}
} // namespace
// Creates a background WebContents for downloading and rendering an SVG image.
class AlmanacAppIconLoader::SvgLoader : public content::WebContentsObserver {
public:
explicit SvgLoader(Profile& profile) {
// SVG icons require a full renderer to rasterize to a bitmap.
web_contents_ = content::WebContents::Create(
content::WebContents::CreateParams(&profile));
// Load about:blank to initialise the WebContents before using it.
Observe(web_contents_.get());
content::NavigationController::LoadURLParams load_params{
GURL(url::kAboutBlankURL)};
load_params.transition_type = ui::PAGE_TRANSITION_GENERATED;
web_contents_->GetController().LoadURLWithParams(load_params);
// Logic continues in DidStopLoading().
}
~SvgLoader() override = default;
// content::WebContentsObserver:
void DidStopLoading() override {
if (!web_contents_ready_.is_signaled()) {
web_contents_ready_.Signal();
}
}
void GetSvg(GURL svg_url,
base::OnceCallback<void(std::optional<SkBitmap>)> callback) {
web_contents_ready_.Post(
FROM_HERE,
base::BindOnce(base::IgnoreResult(&content::WebContents::DownloadImage),
web_contents_->GetWeakPtr(), svg_url,
/*is_favicon=*/false,
gfx::Size(kSvgRasterSize, kSvgRasterSize),
/*max_bitmap_size=*/0, // No max size.
/*bypass_cache=*/false,
base::BindOnce(&SvgLoader::OnImageDownloaded,
std::move(callback))));
}
void WebContentsDestroyed() override { Observe(nullptr); }
private:
static void OnImageDownloaded(
base::OnceCallback<void(std::optional<SkBitmap>)> callback,
int id,
int http_status_code,
const GURL& image_url,
const std::vector<SkBitmap>& bitmaps,
const std::vector<gfx::Size>& sizes) {
if (!bitmaps.empty()) {
std::move(callback).Run(bitmaps.front());
return;
}
std::move(callback).Run(std::nullopt);
}
std::unique_ptr<content::WebContents> web_contents_;
base::OneShotEvent web_contents_ready_;
};
AlmanacAppIconLoader::AlmanacAppIconLoader(Profile& profile)
: profile_(profile.GetWeakPtr()) {}
AlmanacAppIconLoader::~AlmanacAppIconLoader() = default;
void AlmanacAppIconLoader::GetAppIcon(
const GURL& icon_url,
std::string_view icon_mime_type,
bool icon_masking_allowed,
base::OnceCallback<void(apps::IconValuePtr)> callback) {
if (!profile_) {
std::move(callback).Run(nullptr);
}
if (IsSvgExtension(icon_url, icon_mime_type)) {
if (!svg_loader_) {
svg_loader_ = std::make_unique<SvgLoader>(*profile_);
}
svg_loader_->GetSvg(
icon_url, base::BindOnce(&AlmanacAppIconLoader::OnSvgLoaded,
weak_ptr_factory_.GetWeakPtr(),
icon_masking_allowed, std::move(callback)));
return;
}
if (!icon_cache_) {
icon_cache_ = std::make_unique<AlmanacIconCache>(profile_->GetProfileKey());
}
icon_cache_->GetIcon(
icon_url, base::BindOnce(&AlmanacAppIconLoader::OnBitmapLoaded,
weak_ptr_factory_.GetWeakPtr(),
icon_masking_allowed, std::move(callback)));
}
void AlmanacAppIconLoader::OnSvgLoaded(
bool icon_masking_allowed,
base::OnceCallback<void(apps::IconValuePtr)> callback,
std::optional<SkBitmap> bitmap) {
if (!bitmap.has_value()) {
std::move(callback).Run(nullptr);
return;
}
ApplyIconEffects(icon_masking_allowed,
gfx::Image::CreateFrom1xBitmap(bitmap.value()),
std::move(callback));
}
void AlmanacAppIconLoader::OnBitmapLoaded(
bool icon_masking_allowed,
base::OnceCallback<void(apps::IconValuePtr)> callback,
const gfx::Image& icon_bitmap) {
ApplyIconEffects(icon_masking_allowed, icon_bitmap, std::move(callback));
}
void AlmanacAppIconLoader::ApplyIconEffects(
bool icon_masking_allowed,
gfx::Image icon_bitmap,
base::OnceCallback<void(apps::IconValuePtr)> callback) {
if (!profile_ || icon_bitmap.IsEmpty()) {
std::move(callback).Run(nullptr);
return;
}
apps::IconValuePtr icon_value = std::make_unique<apps::IconValue>();
icon_value->icon_type = apps::IconType::kStandard;
icon_value->is_placeholder_icon = false;
icon_value->is_maskable_icon = icon_masking_allowed;
icon_value->uncompressed = icon_bitmap.AsImageSkia();
apps::ApplyIconEffects(
profile_.get(), /*app_id=*/std::nullopt,
icon_masking_allowed ? apps::IconEffects::kCrOsStandardMask
: apps::IconEffects::kCrOsStandardIcon,
icon_bitmap.Width(), std::move(icon_value), std::move(callback));
}
} // namespace apps
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