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Side by Side Diff: content/browser/android/overscroll_glow.h

Issue 14268004: Add overscroll edge effect animations for Android. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 7 years, 8 months ago
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1 // Copyright (c) 2012 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_ANDROID_OVERSCROLL_GLOW_H_
6 #define CONTENT_BROWSER_ANDROID_OVERSCROLL_GLOW_H_
7
8 #include "base/memory/ref_counted.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "base/time.h"
11 #include "content/browser/android/edge_effect.h"
12 #include "ui/gfx/size_f.h"
13 #include "ui/gfx/vector2d_f.h"
14
15 class SkBitmap;
16
17 namespace cc {
18 class Layer;
19 }
20
21 namespace content {
22
23 /* |OverscrollGlow| mirrors its Android counterpart, EdgeEffect.java.
24 * Conscious tradeoffs were made to align this as closely as possible with the
25 * original Android java version.
26 */
27 class OverscrollGlow {
28 public:
29
30 OverscrollGlow(const SkBitmap& edge, const SkBitmap& glow);
31 ~OverscrollGlow();
32
33 void OnOverscrolled(base::TimeTicks current_time,
34 gfx::Vector2dF overscroll,
35 gfx::Vector2dF velocity);
36 bool Animate(base::TimeTicks current_time);
37 bool IsAnimating() const;
38 void Release(base::TimeTicks current_time);
39 void Finish();
40
41 void set_horizontal_overscroll_enabled(bool enabled);
42 void set_size(const gfx::SizeF& size);
43 void set_parent_layer(scoped_refptr<cc::Layer> parent_layer);
44
45 private:
46
47 enum { EDGE_COUNT = EdgeEffect::EDGE_COUNT };
48
49 void Pull(base::TimeTicks current_time,
50 const gfx::Vector2dF& added_overscroll);
51 void Absorb(base::TimeTicks current_time,
52 const gfx::Vector2dF& velocity,
53 const gfx::Vector2dF& overscroll,
54 const gfx::Vector2dF& old_overscroll);
55
56 scoped_ptr<EdgeEffect> edge_effects_[EDGE_COUNT];
57
58 gfx::SizeF size_;
59 gfx::Vector2dF old_overscroll_;
60 bool horizontal_overscroll_enabled_;
61
62 scoped_refptr<cc::Layer> parent_layer_;
63
64 DISALLOW_COPY_AND_ASSIGN(OverscrollGlow);
65 };
66
67 } // namespace content
68
69 #endif // CONTENT_BROWSER_ANDROID_SCROLL_GLOW_H_
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