Index: chrome/browser/manifest/manifest_icon_downloader.h |
diff --git a/chrome/browser/manifest/manifest_icon_downloader.h b/chrome/browser/manifest/manifest_icon_downloader.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..d7fad6ff8d42e4cd3a10cb446d3fff49dc6c7967 |
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+++ b/chrome/browser/manifest/manifest_icon_downloader.h |
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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. |
+ |
+#ifndef CHROME_BROWSER_MANIFEST_MANIFEST_ICON_DOWNLOADER_H_ |
+#define CHROME_BROWSER_MANIFEST_MANIFEST_ICON_DOWNLOADER_H_ |
+ |
+#include "base/basictypes.h" |
+#include "base/bind.h" |
+#include "base/memory/ref_counted.h" |
+#include "content/public/browser/web_contents_observer.h" |
+#include "third_party/skia/include/core/SkBitmap.h" |
+ |
+namespace content { |
+class WebContents; |
+} // namespace content |
+ |
+namespace gfx { |
+class Size; |
+} // namespace gfx |
+ |
+class GURL; |
+ |
+class ManifestIconDownloader |
+ : public content::WebContentsObserver { |
+ public: |
+ using IconFetchCallback = base::Callback<void(const SkBitmap&)>; |
+ |
+ explicit ManifestIconDownloader(content::WebContents* web_contents); |
+ ~ManifestIconDownloader() override = default; |
+ |
+ // Downloads the icon located at icon_url. If the file contains multiple icons |
+ // then it attempts to pick the one closest in size bigger than or |
+ // equal to ideal_icon_size_in_dp, taking into account the density of the |
+ // device. If a bigger icon is chosen then ,the icon is scaled down to be |
+ // equal to ideal_icon_size_in_dp. |
+ // The boolean return value indicates if the download could be successfully |
+ // started. If this is false then the callback will NOT be called. |
+ bool Download(const GURL& icon_url, |
+ int ideal_icon_size_in_dp, |
+ const IconFetchCallback& callback); |
+ |
+ private: |
+ // Callback run after an attempt to download the manifest icon has been made. |
+ static void OnIconFetched(const int ideal_icon_size_in_px, |
+ const IconFetchCallback& callback, |
+ int id, |
+ int http_status_code, |
+ const GURL& url, |
+ const std::vector<SkBitmap>& bitmaps, |
+ const std::vector<gfx::Size>& sizes); |
+ |
+ static int FindClosestBitmapIndex(const int ideal_icon_size_in_px, |
+ const std::vector<SkBitmap>& bitmaps); |
+ |
+ friend class ManifestIconDownloaderTest; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ManifestIconDownloader); |
+}; |
+ |
+#endif // CHROME_BROWSER_MANIFEST_MANIFEST_ICON_DOWNLOADER_H_ |