Index: chrome/browser/extensions/extension_icon_image.h |
diff --git a/chrome/browser/extensions/extension_icon_image.h b/chrome/browser/extensions/extension_icon_image.h |
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+// Copyright (c) 2012 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_IMAGE_H_ |
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_ICON_IMAGE_H_ |
+ |
+#include <map> |
+#include <string> |
+ |
+#include "base/basictypes.h" |
+#include "chrome/browser/extensions/image_loading_tracker.h" |
+#include "chrome/common/extensions/extension_icon_set.h" |
+#include "content/public/browser/notification_observer.h" |
+#include "content/public/browser/notification_registrar.h" |
+#include "ui/gfx/image/image_skia.h" |
+ |
+namespace extensions { |
+class Extension; |
+} |
+ |
+namespace gfx { |
+class Size; |
+} |
+ |
+class ExtensionIconImageDelegate; |
Aaron Boodman
2012/08/02 17:50:56
Can the delegate be defined as a nested class inst
tbarzic
2012/08/02 20:12:52
Done.
|
+ |
+// A class that provides an ImageSkia for UI code to use. It handles extension |
+// icon resource loading, screen scale factor change etc. UI code that uses |
+// extension icon should host this class and be its delegate. ExtensionIconImage |
+// should be outlived by the delegate. In painting code, UI code paints with the |
+// ImageSkia provided by this class. If required extension icon resource is not |
+// present, this class uses ImageLoadingTracker to load it and call on its |
+// delegate interface when the resource is loaded. |
+class ExtensionIconImage : public ImageLoadingTracker::Observer, |
Aaron Boodman
2012/08/02 17:50:56
Please put this in the extensions namespace and re
tbarzic
2012/08/02 20:12:52
Done.
|
+ public content::NotificationObserver { |
+ public: |
+ ExtensionIconImage(const extensions::Extension* extension, |
+ const ExtensionIconSet& icon_set, |
+ int resource_size_in_dip, |
+ ExtensionIconSet::MatchType resource_match_type, |
+ const gfx::Size& desired_size_in_dip, |
+ ImageLoadingTracker::CacheParam cache_param, |
+ ExtensionIconImageDelegate* delegate); |
+ virtual ~ExtensionIconImage(); |
+ |
+ // True if no images can be loaded. This does not imply any images have |
Aaron Boodman
2012/08/02 17:50:56
The second sentence of this comment makes no sense
tbarzic
2012/08/02 20:12:52
Yeah, it made (slightly) more sense when the metho
|
+ // actually been loaded. |
+ bool IsNull() const { return image_skia_.isNull(); } |
+ |
+ const gfx::ImageSkia& image_skia() const { return image_skia_; } |
+ |
+ private: |
+ class Source; |
+ typedef std::map<int, ui::ScaleFactor> LoadMap; |
+ |
+ // Loads bitmap for additional scale factor. |
+ void LoadImageForScaleFactor(ui::ScaleFactor scale_factor); |
+ |
+ // ImageLoadingTracker::Observer overrides: |
+ virtual void OnImageLoaded(const gfx::Image& image, |
+ const std::string& extension_id, |
+ int index) OVERRIDE; |
+ |
+ // content::NotificationObserver overrides: |
+ virtual void Observe(int type, |
+ const content::NotificationSource& source, |
+ const content::NotificationDetails& details) OVERRIDE; |
+ |
+ const extensions::Extension* extension_; |
+ const ExtensionIconSet& icon_set_; |
+ const int resource_size_in_dip_; |
+ const ExtensionIconSet::MatchType resource_match_type_; |
+ const gfx::Size desired_size_in_dip_; |
+ const ImageLoadingTracker::CacheParam cache_param_; |
+ |
+ ExtensionIconImageDelegate* delegate_; |
+ |
+ Source* source_; // Owned by ImageSkia storage. |
+ gfx::ImageSkia image_skia_; |
+ |
+ ImageLoadingTracker tracker_; |
+ content::NotificationRegistrar registrar_; |
+ |
+ LoadMap load_map_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ExtensionIconImage); |
+}; |
+ |
+#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_ICON_IMAGE_H_ |