Index: ui/app_list/views/top_icon_animation_view.h |
diff --git a/ui/app_list/views/top_icon_animation_view.h b/ui/app_list/views/top_icon_animation_view.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..88d2d0f2539cdfa8abd1c5ba04e02e763dcab012 |
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+++ b/ui/app_list/views/top_icon_animation_view.h |
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+// Copyright (c) 2014 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 UI_APP_LIST_VIEWS_TOP_ICON_ANIMATION_VIEW_H |
+#define UI_APP_LIST_VIEWS_TOP_ICON_ANIMATION_VIEW_H |
+ |
+#include "base/observer_list.h" |
+#include "ui/compositor/layer_animation_observer.h" |
+#include "ui/views/view.h" |
+ |
+namespace views { |
+class ImageView; |
+} |
+ |
+namespace app_list { |
+ |
+// Observer for top icon animation completion. |
+class TopIconAnimationObserver { |
+ public: |
+ // Called when top icon animation completes. |
+ virtual void OnTopIconAnimationsComplete() {} |
+ |
+ protected: |
+ TopIconAnimationObserver() {} |
+ virtual ~TopIconAnimationObserver() {} |
+ |
+ private: |
+ DISALLOW_COPY_AND_ASSIGN(TopIconAnimationObserver); |
+}; |
+ |
+// Transitional view used for top item icons animation when opening or closing |
+// a folder. |
+class TopIconAnimationView : public views::View, |
+ public ui::ImplicitAnimationObserver { |
+ public: |
+ // |icon|: The icon image of the item icon of full scale size. |
+ // |scaled_rect|: Bounds of the small icon inside folder icon. |
+ // |open_folder|: Specify open/close folder animation to perform. |
+ // The view will be self-cleaned by the end of animation. |
+ TopIconAnimationView(const gfx::ImageSkia& icon, |
+ const gfx::Rect& scaled_rect, |
+ bool open_folder); |
+ virtual ~TopIconAnimationView(); |
+ |
+ void AddObserver(TopIconAnimationObserver* observer); |
+ void RemoveObserver(TopIconAnimationObserver* observer); |
+ |
+ // When opening a folder, transform the top item icon from the small icon |
+ // inside folder icon to the full scale icon at the target location. |
+ // When closing a folder, transform the full scale item icon from its |
+ // location to the small icon inside the folder icon. |
+ void TransformView(); |
+ |
+ private: |
+ // views::View overrides: |
+ virtual gfx::Size GetPreferredSize() OVERRIDE; |
+ virtual void Layout() OVERRIDE; |
+ |
+ // ui::ImplicitAnimationObserver overrides: |
+ virtual void OnImplicitAnimationsCompleted() OVERRIDE; |
+ |
+ gfx::Size icon_size_; |
+ views::ImageView* icon_; // Owned by views hierarchy. |
+ // Rect of the scaled down top item icon inside folder icon's ink bubble. |
+ gfx::Rect scaled_rect_; |
+ // true: opening folder; false: closing folder. |
+ bool open_folder_; |
+ |
+ ObserverList<TopIconAnimationObserver> observers_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(TopIconAnimationView); |
+}; |
+ |
+} // namespace app_list |
+ |
+#endif // UI_APP_LIST_VIEWS_TOP_ICON_ANIMATION_VIEW_H |