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// Copyright (c) 2010 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_EXTENSIONS_EXTENSION_ICON_MANAGER_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_ICON_MANAGER_H_
#pragma once
#include <map>
#include <set>
#include <string>
#include "base/basictypes.h"
#include "chrome/browser/extensions/image_loading_tracker.h"
#include "gfx/insets.h"
#include "third_party/skia/include/core/SkBitmap.h"
class Extension;
class ExtensionIconManager : public ImageLoadingTracker::Observer {
public:
ExtensionIconManager();
virtual ~ExtensionIconManager();
// Start loading the icon for the given extension.
void LoadIcon(const Extension* extension);
// This returns a bitmap of width/height kFavIconSize, loaded either from an
// entry specified in the extension's 'icon' section of the manifest, or a
// default extension icon.
const SkBitmap& GetIcon(const std::string& extension_id);
// Removes the extension's icon from memory.
void RemoveIcon(const std::string& extension_id);
// Implements the ImageLoadingTracker::Observer interface.
virtual void OnImageLoaded(SkBitmap* image, ExtensionResource resource,
int index);
void set_monochrome(bool value) { monochrome_ = value; }
void set_padding(const gfx::Insets& value) { padding_ = value; }
private:
// Makes sure we've done one-time initialization of the default extension icon
// default_icon_.
void EnsureDefaultIcon();
// Helper function to return a copy of |src| with the proper scaling and
// coloring.
SkBitmap ApplyTransforms(const SkBitmap& src);
// Used for loading extension icons.
ImageLoadingTracker image_tracker_;
// Maps extension id to an SkBitmap with the icon for that extension.
std::map<std::string, SkBitmap> icons_;
// Set of extension IDs waiting for icons to load.
std::set<std::string> pending_icons_;
// The default icon we'll use if an extension doesn't have one.
SkBitmap default_icon_;
// If true, we will desaturate the icons to make them monochromatic.
bool monochrome_;
// Specifies the amount of empty padding to place around the icon.
gfx::Insets padding_;
DISALLOW_COPY_AND_ASSIGN(ExtensionIconManager);
};
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_ICON_MANAGER_H_
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