1 // Copyright (c) 2012 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 CONTENT_RENDERER_FETCHERS_MULTI_RESOLUTION_IMAGE_RESOURCE_FETCHER_H_ 6 #define CONTENT_RENDERER_FETCHERS_MULTI_RESOLUTION_IMAGE_RESOURCE_FETCHER_H_ 7 8 #include <string> 9 #include <vector> 10 11 #include "base/basictypes.h" 12 #include "base/callback.h" 13 #include "base/memory/scoped_ptr.h" 14 #include "third_party/WebKit/public/platform/WebURLRequest.h" 15 #include "url/gurl.h" 16 17 class SkBitmap; 18 19 namespace blink { 20 class WebFrame; 21 class WebURLResponse; 22 } 23 24 namespace content { 25 26 class ResourceFetcher; 27 28 // A resource fetcher that returns all (differently-sized) frames in 29 // an image. Useful for favicons. 30 class MultiResolutionImageResourceFetcher { 31 public: 32 typedef base::Callback<void(MultiResolutionImageResourceFetcher*, 33 const std::vector<SkBitmap>&)> Callback; 34 35 MultiResolutionImageResourceFetcher( 36 const GURL& image_url, 37 blink::WebFrame* frame, 38 int id, 39 blink::WebURLRequest::TargetType target_type, 40 const Callback& callback); 41 42 virtual ~MultiResolutionImageResourceFetcher(); 43 44 // URL of the image we're downloading. image_url()45 const GURL& image_url() const { return image_url_; } 46 47 // Unique identifier for the request. id()48 int id() const { return id_; } 49 50 // HTTP status code upon fetch completion. http_status_code()51 int http_status_code() const { return http_status_code_; } 52 53 private: 54 // ResourceFetcher::Callback. Decodes the image and invokes callback_. 55 void OnURLFetchComplete(const blink::WebURLResponse& response, 56 const std::string& data); 57 58 Callback callback_; 59 60 // Unique identifier for the request. 61 const int id_; 62 63 // HTTP status code upon fetch completion. 64 int http_status_code_; 65 66 // URL of the image. 67 const GURL image_url_; 68 69 // Does the actual download. 70 scoped_ptr<ResourceFetcher> fetcher_; 71 72 DISALLOW_COPY_AND_ASSIGN(MultiResolutionImageResourceFetcher); 73 }; 74 75 } // namespace content 76 77 #endif // CONTENT_RENDERER_FETCHERS_MULTI_RESOLUTION_IMAGE_RESOURCE_FETCHER_H_ 78