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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CHROME_BROWSER_MANIFEST_MANIFEST_ICON_DOWNLOADER_H_ | |
| 6 #define CHROME_BROWSER_MANIFEST_MANIFEST_ICON_DOWNLOADER_H_ | |
| 7 | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "base/callback_forward.h" | |
| 11 #include "base/macros.h" | |
| 12 | |
| 13 class SkBitmap; | |
| 14 | |
| 15 namespace content { | |
| 16 class WebContents; | |
| 17 } // namespace content | |
| 18 | |
| 19 namespace gfx { | |
| 20 class Size; | |
| 21 } // namespace gfx | |
| 22 | |
| 23 class GURL; | |
| 24 | |
| 25 // Helper class which downloads the icon located at a specified. If the icon | |
| 26 // file contains multiple icons then it attempts to pick the one closest in size | |
| 27 // bigger than or equal to ideal_icon_size_in_px, taking into account the | |
| 28 // density of the device. If a bigger icon is chosen then, the icon is scaled | |
| 29 // down to be equal to ideal_icon_size_in_px. Smaller icons will be chosen down | |
| 30 // to the value specified by |minimum_icon_size_in_px|. | |
| 31 class ManifestIconDownloader final { | |
| 32 public: | |
| 33 using IconFetchCallback = base::Callback<void(const SkBitmap&)>; | |
| 34 | |
| 35 ManifestIconDownloader() = delete; | |
| 36 ~ManifestIconDownloader() = delete; | |
| 37 | |
| 38 // Returns whether the download has started. | |
| 39 // It will return false if the current context or information do not allow to | |
| 40 // download the image. | |
| 41 static bool Download(content::WebContents* web_contents, | |
| 42 const GURL& icon_url, | |
| 43 int ideal_icon_size_in_px, | |
| 44 int minimum_icon_size_in_px, | |
| 45 const IconFetchCallback& callback); | |
| 46 | |
| 47 private: | |
| 48 class DevToolsConsoleHelper; | |
| 49 | |
| 50 // Callback run after the manifest icon downloaded successfully or the | |
| 51 // download failed. | |
| 52 static void OnIconFetched(int ideal_icon_size_in_px, | |
| 53 int minimum_icon_size_in_px, | |
| 54 DevToolsConsoleHelper* console_helper, | |
| 55 const IconFetchCallback& callback, | |
| 56 int id, | |
| 57 int http_status_code, | |
| 58 const GURL& url, | |
| 59 const std::vector<SkBitmap>& bitmaps, | |
| 60 const std::vector<gfx::Size>& sizes); | |
| 61 | |
| 62 static void ScaleIcon(int ideal_icon_size_in_px, | |
| 63 const SkBitmap& bitmap, | |
| 64 const IconFetchCallback& callback); | |
| 65 | |
| 66 static int FindClosestBitmapIndex(int ideal_icon_size_in_px, | |
| 67 int minimum_icon_size_in_px, | |
| 68 const std::vector<SkBitmap>& bitmaps); | |
| 69 | |
| 70 friend class ManifestIconDownloaderTest; | |
| 71 | |
| 72 DISALLOW_COPY_AND_ASSIGN(ManifestIconDownloader); | |
| 73 }; | |
| 74 | |
| 75 #endif // CHROME_BROWSER_MANIFEST_MANIFEST_ICON_DOWNLOADER_H_ | |
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Chromium Code Reviews
Issue 2933743002:
Move chrome/browser/manifest to content/browser. (Closed)
