Index: content/browser/web_contents/aura/overscroll_window_animation.h |
diff --git a/content/browser/web_contents/aura/overscroll_window_animation.h b/content/browser/web_contents/aura/overscroll_window_animation.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..39ae5a8ddb7477d11900ea5c8d73771270eb525e |
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+++ b/content/browser/web_contents/aura/overscroll_window_animation.h |
@@ -0,0 +1,115 @@ |
+// Copyright 2015 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 CONTENT_BROWSER_WEB_CONTENTS_AURA_OVERSCROLL_WINDOW_ANIMATION_H_ |
+#define CONTENT_BROWSER_WEB_CONTENTS_AURA_OVERSCROLL_WINDOW_ANIMATION_H_ |
+ |
+#include "base/gtest_prod_util.h" |
+#include "content/browser/renderer_host/overscroll_controller_delegate.h" |
+#include "content/common/content_export.h" |
+#include "ui/compositor/layer_animation_observer.h" |
+ |
+namespace aura { |
+class Window; |
+} |
+ |
+namespace ui { |
+class Layer; |
+class LayerAnimator; |
+} |
+ |
+namespace content { |
+ |
+class ShadowLayerDelegate; |
+class WebContentsImpl; |
+ |
+// Manages the animations during an overscroll navigation by handling overscroll |
mfomitchev
2015/03/26 15:36:00
We probably shouldn't be talking about "navigation
Nina
2015/03/27 17:52:36
Changed the comment completely. Check it out.
|
+// events. |
+class CONTENT_EXPORT OverscrollWindowAnimation |
+ : public OverscrollControllerDelegate, |
+ ui::ImplicitAnimationObserver { |
+ public: |
+ enum Direction { SLIDE_FRONT, SLIDE_BACK, SLIDE_NONE }; |
+ |
+ // Delegate class that interfaces with the window animation, responsible for |
+ // navigation. |
+ class Delegate { |
+ public: |
+ virtual ~Delegate() {} |
+ |
+ // The following two functions create a slide window and transfer back its |
+ // ownership. |
+ virtual scoped_ptr<aura::Window> CreateFrontWindow() = 0; |
+ virtual scoped_ptr<aura::Window> CreateBackWindow() = 0; |
+ |
+ // Returns the live window that participates in the overscroll gesture. |
+ virtual aura::Window* GetTargetWindow() const = 0; |
mfomitchev
2015/03/26 02:41:39
"Target window" doesn't really explain what this w
Nina
2015/03/27 17:52:36
Changed to GetMainWindow.
|
+ |
+ // Called when we know the animation is going to complete successfully. |
+ virtual void OnOverscrollCompleting() = 0; |
+ |
+ // Called when the animation has been completed. |
+ virtual void OnOverscrollCompleted(scoped_ptr<aura::Window> window) = 0; |
+ |
+ // Called when the overscroll gesture has been aborted. |
+ virtual void OnOverscrollAborted() = 0; |
+ }; |
+ |
+ explicit OverscrollWindowAnimation(Delegate* delegate); |
+ |
+ ~OverscrollWindowAnimation() override; |
+ |
+ // Returns true if we are currently handling a slide animation. |
+ bool is_active() const { return !!window_; } |
+ |
+ // Overridden from OverscrollControllerDelegate: |
+ gfx::Rect GetVisibleBounds() const override; |
+ |
+ bool OnOverscrollUpdate(float delta_x, float delta_y) override; |
+ |
+ void OnOverscrollComplete(OverscrollMode overscroll_mode) override; |
+ |
+ void OnOverscrollModeChange(OverscrollMode old_mode, |
+ OverscrollMode new_mode) override; |
+ |
+ private: |
+ /*friend class OverscrollWindowAnimationTest; |
+ FRIEND_TEST_ALL_PREFIXES(OverscrollWindowAnimationTest, |
+ BasicOverscroll);*/ |
+ |
+ // Starts the overscroll cancelled animation. |
+ void CancelOverscroll(); |
+ |
+ // Moves the animated window according to the given scroll deltas. Returns |
+ // true if the update moved the window. |
+ bool UpdateForScroll(float delta_x); |
+ |
+ // Returns a translation on the x axis for the given overscroll. |
+ float GetTranslationForOverscroll(float delta_x); |
+ |
+ // Returns the layer that is animated for the overscroll gesture. |
+ ui::Layer* GetFrontLayer() const; |
+ |
+ // ui::ImplicitAnimationObserver: |
+ void OnImplicitAnimationsCompleted() override; |
+ |
+ // Owns the new window created on the overscroll gesture. |
+ scoped_ptr<aura::Window> window_; |
+ |
+ // Shadow shown under the animated layer. |
+ scoped_ptr<ShadowLayerDelegate> shadow_; |
+ |
+ // Delegate that provides the animation target and handles navigation. |
+ Delegate* delegate_; |
+ |
+ // The current overscroll direction. |
+ Direction direction_; |
+ |
+ // Indicates if the current overscroll gesture has been cancelled. |
+ bool overscroll_cancelled_; |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_BROWSER_WEB_CONTENTS_AURA_OVERSCROLL_WINDOW_ANIMATION_H_ |