| // Copyright 2017 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/chromeos/app_mode/kiosk_app_icon_loader.h" |
| |
| #include <vector> |
| |
| #include "base/bind.h" |
| #include "base/files/file_path.h" |
| #include "base/files/file_util.h" |
| #include "base/sequenced_task_runner.h" |
| #include "base/task_scheduler/post_task.h" |
| #include "base/task_scheduler/task_traits.h" |
| #include "chrome/browser/image_decoder.h" |
| #include "content/public/browser/browser_thread.h" |
| |
| using content::BrowserThread; |
| |
| namespace chromeos { |
| |
| class IconImageRequest : public ImageDecoder::ImageRequest { |
| public: |
| IconImageRequest(const scoped_refptr<base::SequencedTaskRunner>& task_runner, |
| KioskAppIconLoader::ResultCallback result_callback) |
| : ImageRequest(task_runner), result_callback_(result_callback) {} |
| |
| void OnImageDecoded(const SkBitmap& decoded_image) override { |
| gfx::ImageSkia image = gfx::ImageSkia::CreateFrom1xBitmap(decoded_image); |
| image.MakeThreadSafe(); |
| BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, |
| base::BindOnce(result_callback_, image)); |
| delete this; |
| } |
| |
| void OnDecodeImageFailed() override { |
| LOG(ERROR) << "Failed to decode icon image."; |
| BrowserThread::PostTask( |
| BrowserThread::UI, FROM_HERE, |
| base::BindOnce(result_callback_, base::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."; |
| BrowserThread::PostTask( |
| BrowserThread::UI, FROM_HERE, |
| base::BindOnce(result_callback, base::Optional<gfx::ImageSkia>())); |
| return; |
| } |
| |
| // IconImageRequest will delete itself on completion of ImageDecoder callback. |
| IconImageRequest* image_request = |
| new IconImageRequest(callback_task_runner, result_callback); |
| ImageDecoder::Start(image_request, |
| std::vector<uint8_t>(data.begin(), data.end())); |
| } |
| |
| KioskAppIconLoader::KioskAppIconLoader(Delegate* delegate) |
| : delegate_(delegate), weak_factory_(this) {} |
| |
| KioskAppIconLoader::~KioskAppIconLoader() = default; |
| |
| void KioskAppIconLoader::Start(const base::FilePath& icon_path) { |
| scoped_refptr<base::SequencedTaskRunner> task_runner = |
| base::CreateSequencedTaskRunnerWithTraits( |
| {base::MayBlock(), base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN}); |
| task_runner->PostTask( |
| FROM_HERE, |
| base::BindOnce(&LoadOnBlockingPool, icon_path, task_runner, |
| base::Bind(&KioskAppIconLoader::OnImageDecodingFinished, |
| weak_factory_.GetWeakPtr()))); |
| } |
| |
| void KioskAppIconLoader::OnImageDecodingFinished( |
| base::Optional<gfx::ImageSkia> result) { |
| DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| |
| if (result.has_value()) { |
| delegate_->OnIconLoadSuccess(result.value()); |
| } else { |
| delegate_->OnIconLoadFailure(); |
| } |
| } |
| |
| } // namespace chromeos |