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| 1 // Copyright 2014 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 CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_OVERSCROLL_ANIMATOR_SLIDE
R_MAC_H_ |
| 6 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_OVERSCROLL_ANIMATOR_SLIDE
R_MAC_H_ |
| 7 |
| 8 #import <Cocoa/Cocoa.h> |
| 9 |
| 10 #include "base/mac/scoped_nsobject.h" |
| 11 #include "base/memory/scoped_ptr.h" |
| 12 #include "content/browser/web_contents/web_contents_view_overscroll_animator_mac
.h" |
| 13 |
| 14 namespace overscroll_animator { |
| 15 class WebContentsPaintObserver; |
| 16 } // namespace overscroll_animator |
| 17 |
| 18 @interface OverscrollAnimatorSliderView |
| 19 : NSView<WebContentsOverscrollAnimator> { |
| 20 // This container view holds the RenderWidgetHost's NativeViews. Most of the |
| 21 // time, its frame in screen coordinates is the same as SliderView's frame in |
| 22 // screen coordinates. During an overscroll animation, it may temporarily be |
| 23 // relocated, but it will return to its original position after the overscroll |
| 24 // animation is finished. |
| 25 base::scoped_nsobject<NSView> middleView_; |
| 26 |
| 27 // This view is a sibling of middleView_, and is guaranteed to live below it. |
| 28 // Most of the time, it is hidden. During a backwards overscroll animation, |
| 29 // middleView_ is slid to the right, and bottomView_ peeks out from the |
| 30 // original position of middleView_. |
| 31 base::scoped_nsobject<NSImageView> bottomView_; |
| 32 |
| 33 // This view is a sibling of middleView_, and is guaranteed to live above it. |
| 34 // Most of the time, it is hidden. During a forwards overscroll animation, |
| 35 // topView_ is slid to the left from off screen, its final position exactly |
| 36 // covering middleView_. |
| 37 base::scoped_nsobject<NSImageView> topView_; |
| 38 |
| 39 // The direction of the current overscroll animation. This property has no |
| 40 // meaning when inOverscroll_ is false. |
| 41 content::OverscrollAnimatorDirection direction_; |
| 42 |
| 43 // Indicates that this view is completing or cancelling the overscroll. This |
| 44 // animation cannot be cancelled. |
| 45 BOOL animating_; |
| 46 |
| 47 // Reflects whether this view is in the process of handling an overscroll. |
| 48 BOOL inOverscroll_; |
| 49 |
| 50 // The most recent value passed to -updateOverscrollProgress:. |
| 51 CGFloat progress_; |
| 52 |
| 53 // An observer that reports the first non-empty paint of a WebContents. This |
| 54 // is used when completing an overscroll animation. |
| 55 scoped_ptr<overscroll_animator::WebContentsPaintObserver> observer_; |
| 56 } |
| 57 @end |
| 58 |
| 59 #endif // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_OVERSCROLL_ANIMATOR_SL
IDER_MAC_H_ |
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