Re-subimission of https://codereview.chromium.org/1041213003/
[chromium-blink-merge.git] / content / browser / android / edge_effect_l.h
blob872de821039b02986ba31783f0804ed6237fc1a4
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.
5 #ifndef CONTENT_BROWSER_ANDROID_EDGE_EFFECT_L_H_
6 #define CONTENT_BROWSER_ANDROID_EDGE_EFFECT_L_H_
8 #include "base/memory/ref_counted.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "content/browser/android/edge_effect_base.h"
11 #include "ui/gfx/geometry/rect_f.h"
12 #include "ui/gfx/geometry/size.h"
14 namespace cc {
15 class Layer;
16 class UIResourceLayer;
19 namespace ui {
20 class ResourceManager;
23 namespace content {
25 // |EdgeEffectL| mirrors its Android L counterpart, EdgeEffect.java.
26 // Conscious tradeoffs were made to align this as closely as possible with the
27 // the original Android java version.
28 // All coordinates and dimensions are in device pixels.
29 class EdgeEffectL : public EdgeEffectBase {
30 public:
31 explicit EdgeEffectL(ui::ResourceManager* resource_manager);
32 ~EdgeEffectL() override;
34 void Pull(base::TimeTicks current_time,
35 float delta_distance,
36 float displacement) override;
37 void Absorb(base::TimeTicks current_time, float velocity) override;
38 bool Update(base::TimeTicks current_time) override;
39 void Release(base::TimeTicks current_time) override;
41 void Finish() override;
42 bool IsFinished() const override;
43 float GetAlpha() const override;
45 void ApplyToLayers(const gfx::SizeF& size,
46 const gfx::Transform& transform) override;
47 void SetParent(cc::Layer* parent) override;
49 // Thread-safe trigger to load resources.
50 static void PreloadResources(ui::ResourceManager* resource_manager);
52 private:
53 ui::ResourceManager* const resource_manager_;
55 scoped_refptr<cc::UIResourceLayer> glow_;
57 float glow_alpha_;
58 float glow_scale_y_;
60 float glow_alpha_start_;
61 float glow_alpha_finish_;
62 float glow_scale_y_start_;
63 float glow_scale_y_finish_;
65 gfx::RectF arc_rect_;
66 gfx::Size bounds_;
67 float displacement_;
68 float target_displacement_;
70 base::TimeTicks start_time_;
71 base::TimeDelta duration_;
73 State state_;
75 float pull_distance_;
77 DISALLOW_COPY_AND_ASSIGN(EdgeEffectL);
80 } // namespace content
82 #endif // CONTENT_BROWSER_ANDROID_EDGE_EFFECT_L_H_