Index: chrome/browser/chromeos/app_mode/kiosk_app_icon_loader.cc |
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_icon_loader.cc b/chrome/browser/chromeos/app_mode/kiosk_app_icon_loader.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..cb46f50a632d60ede2f973690983e262950c78be |
--- /dev/null |
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_icon_loader.cc |
@@ -0,0 +1,97 @@ |
+// 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/threading/sequenced_worker_pool.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::Bind(result_callback_, image)); |
+ delete this; |
+ } |
+ |
+ void OnDecodeImageFailed() override { |
+ LOG(ERROR) << "Failed to decode icon image."; |
+ BrowserThread::PostTask( |
+ BrowserThread::UI, FROM_HERE, |
+ base::Bind(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->RunsTasksOnCurrentThread()); |
+ |
+ 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::Bind(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) { |
+ base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool(); |
+ base::SequencedWorkerPool::SequenceToken token = pool->GetSequenceToken(); |
+ task_runner_ = pool->GetSequencedTaskRunnerWithShutdownBehavior( |
+ token, base::SequencedWorkerPool::SKIP_ON_SHUTDOWN); |
+ task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&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 |