1 // Copyright (c) 2011 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_EXTENSIONS_EXTENSION_ICON_MANAGER_H_ 6 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_ICON_MANAGER_H_ 7 8 #include <map> 9 #include <set> 10 #include <string> 11 12 #include "base/basictypes.h" 13 #include "base/memory/weak_ptr.h" 14 #include "third_party/skia/include/core/SkBitmap.h" 15 #include "ui/gfx/insets.h" 16 17 namespace content { 18 class BrowserContext; 19 } 20 21 namespace extensions { 22 class Extension; 23 } 24 25 namespace gfx { 26 class Image; 27 } 28 29 class ExtensionIconManager { 30 public: 31 ExtensionIconManager(); 32 virtual ~ExtensionIconManager(); 33 34 // Start loading the icon for the given extension. 35 void LoadIcon(content::BrowserContext* context, 36 const extensions::Extension* extension); 37 38 // This returns a bitmap of width/height kFaviconSize, loaded either from an 39 // entry specified in the extension's 'icon' section of the manifest, or a 40 // default extension icon. 41 const SkBitmap& GetIcon(const std::string& extension_id); 42 43 // Removes the extension's icon from memory. 44 void RemoveIcon(const std::string& extension_id); 45 set_monochrome(bool value)46 void set_monochrome(bool value) { monochrome_ = value; } set_padding(const gfx::Insets & value)47 void set_padding(const gfx::Insets& value) { padding_ = value; } 48 49 protected: 50 virtual void OnImageLoaded(const std::string& extension_id, 51 const gfx::Image& image); 52 53 private: 54 // Makes sure we've done one-time initialization of the default extension icon 55 // default_icon_. 56 void EnsureDefaultIcon(); 57 58 // Helper function to return a copy of |src| with the proper scaling and 59 // coloring. 60 SkBitmap ApplyTransforms(const SkBitmap& src); 61 62 // Maps extension id to an SkBitmap with the icon for that extension. 63 std::map<std::string, SkBitmap> icons_; 64 65 // Set of extension IDs waiting for icons to load. 66 std::set<std::string> pending_icons_; 67 68 // The default icon we'll use if an extension doesn't have one. 69 SkBitmap default_icon_; 70 71 // If true, we will desaturate the icons to make them monochromatic. 72 bool monochrome_; 73 74 // Specifies the amount of empty padding to place around the icon. 75 gfx::Insets padding_; 76 77 base::WeakPtrFactory<ExtensionIconManager> weak_ptr_factory_; 78 79 DISALLOW_COPY_AND_ASSIGN(ExtensionIconManager); 80 }; 81 82 #endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_ICON_MANAGER_H_ 83