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// Copyright 2017 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/ash/app_mode/kiosk_app_icon_loader.h"
#include <vector>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "chrome/browser/image_decoder/image_decoder.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace ash {
class IconImageRequest : public ImageDecoder::ImageRequest {
public:
IconImageRequest(const scoped_refptr<base::SequencedTaskRunner>& task_runner,
KioskAppIconLoader::ResultCallback result_callback)
: ImageRequest(task_runner),
result_callback_(std::move(result_callback)) {}
void OnImageDecoded(const SkBitmap& decoded_image) override {
gfx::ImageSkia image = gfx::ImageSkia::CreateFrom1xBitmap(decoded_image);
image.MakeThreadSafe();
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(std::move(result_callback_), image));
delete this;
}
void OnDecodeImageFailed() override {
LOG(ERROR) << "Failed to decode icon image.";
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(std::move(result_callback_),
std::optional<gfx::ImageSkia>()));
delete this;
}
private:
~IconImageRequest() override = default;
KioskAppIconLoader::ResultCallback result_callback_;
};
void LoadOnBlockingPool(
const base::FilePath& icon_path,
scoped_refptr<base::SequencedTaskRunner> callback_task_runner,
KioskAppIconLoader::ResultCallback result_callback) {
DCHECK(callback_task_runner->RunsTasksInCurrentSequence());
std::string data;
if (!base::ReadFileToString(base::FilePath(icon_path), &data)) {
LOG(ERROR) << "Failed to read icon file.";
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(std::move(result_callback),
std::optional<gfx::ImageSkia>()));
return;
}
// IconImageRequest will delete itself on completion of ImageDecoder callback.
IconImageRequest* image_request =
new IconImageRequest(callback_task_runner, std::move(result_callback));
ImageDecoder::Start(image_request, std::move(data));
}
KioskAppIconLoader::KioskAppIconLoader(ResultCallback callback)
: callback_(std::move(callback)) {}
KioskAppIconLoader::~KioskAppIconLoader() = default;
void KioskAppIconLoader::Start(const base::FilePath& icon_path) {
scoped_refptr<base::SequencedTaskRunner> task_runner =
base::ThreadPool::CreateSequencedTaskRunner(
{base::MayBlock(), base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN});
task_runner->PostTask(
FROM_HERE,
base::BindOnce(
&LoadOnBlockingPool, icon_path, task_runner,
base::BindOnce(&KioskAppIconLoader::OnImageDecodingFinished,
weak_factory_.GetWeakPtr())));
}
void KioskAppIconLoader::OnImageDecodingFinished(
std::optional<gfx::ImageSkia> result) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
std::move(callback_).Run(result);
}
} // namespace ash
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