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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ui/views/controls/slide_out_view.h" | 5 #include "ui/views/controls/slide_out_view.h" |
6 | 6 |
7 #include "ui/compositor/layer.h" | 7 #include "ui/compositor/layer.h" |
8 #include "ui/compositor/scoped_layer_animation_settings.h" | 8 #include "ui/compositor/scoped_layer_animation_settings.h" |
9 #include "ui/gfx/transform.h" | 9 #include "ui/gfx/transform.h" |
10 #include "ui/views/controls/slide_out_view_impl.h" | |
10 | 11 |
11 namespace views { | 12 namespace views { |
12 | 13 |
13 SlideOutView::SlideOutView() | 14 SlideOutView::SlideOutView() |
14 : gesture_scroll_amount_(0.f) { | 15 : gesture_scroll_amount_(0.f) { |
15 SetPaintToLayer(true); | 16 if (get_use_acceleration_when_possible()) { |
msw
2013/01/17 02:28:30
nit: remove unnecessary braces.
dewittj
2013/01/17 21:25:18
Gone.
| |
16 SetFillsBoundsOpaquely(false); | 17 impl_.reset(new SlideOutViewImpl(this)); |
18 } | |
17 } | 19 } |
18 | 20 |
19 SlideOutView::~SlideOutView() { | 21 SlideOutView::~SlideOutView() { |
20 } | 22 } |
21 | 23 |
22 void SlideOutView::OnGestureEvent(ui::GestureEvent* event) { | 24 void SlideOutView::OnGestureEvent(ui::GestureEvent* event) { |
23 if (event->type() == ui::ET_SCROLL_FLING_START) { | 25 if (event->type() == ui::ET_SCROLL_FLING_START) { |
24 // The threshold for the fling velocity is computed empirically. | 26 // The threshold for the fling velocity is computed empirically. |
25 // The unit is in pixels/second. | 27 // The unit is in pixels/second. |
26 const float kFlingThresholdForClose = 800.f; | 28 const float kFlingThresholdForClose = 800.f; |
27 if (fabsf(event->details().velocity_x()) > kFlingThresholdForClose) { | 29 if (fabsf(event->details().velocity_x()) > kFlingThresholdForClose) { |
28 SlideOutAndClose(event->details().velocity_x() < 0 ? SLIDE_LEFT : | 30 SlideOutAndClose(event->details().velocity_x() < 0 ? SLIDE_LEFT : |
29 SLIDE_RIGHT); | 31 SLIDE_RIGHT); |
30 event->StopPropagation(); | 32 event->StopPropagation(); |
31 return; | 33 return; |
32 } | 34 } |
33 RestoreVisualState(); | 35 RestoreVisualState(); |
34 return; | 36 return; |
35 } | 37 } |
36 | 38 |
37 if (!event->IsScrollGestureEvent()) | 39 if (!event->IsScrollGestureEvent()) |
38 return; | 40 return; |
39 | 41 |
40 if (event->type() == ui::ET_GESTURE_SCROLL_BEGIN) { | 42 if (event->type() == ui::ET_GESTURE_SCROLL_BEGIN) { |
41 gesture_scroll_amount_ = 0.f; | 43 gesture_scroll_amount_ = 0.f; |
42 } else if (event->type() == ui::ET_GESTURE_SCROLL_UPDATE) { | 44 } else if (event->type() == ui::ET_GESTURE_SCROLL_UPDATE) { |
43 // The scroll-update events include the incremental scroll amount. | 45 // The scroll-update events include the incremental scroll amount. |
44 gesture_scroll_amount_ += event->details().scroll_x(); | 46 gesture_scroll_amount_ += event->details().scroll_x(); |
45 | 47 |
46 gfx::Transform transform; | 48 if (impl_) |
47 transform.Translate(gesture_scroll_amount_, 0.0); | 49 impl_->TransformView(gesture_scroll_amount_); |
48 layer()->SetTransform(transform); | |
49 layer()->SetOpacity( | |
50 1.f - std::min(fabsf(gesture_scroll_amount_) / width(), 1.f)); | |
51 } else if (event->type() == ui::ET_GESTURE_SCROLL_END) { | 50 } else if (event->type() == ui::ET_GESTURE_SCROLL_END) { |
52 const float kScrollRatioForClosingNotification = 0.5f; | 51 const float kScrollRatioForClosingNotification = 0.5f; |
53 float scrolled_ratio = fabsf(gesture_scroll_amount_) / width(); | 52 float scrolled_ratio = fabsf(gesture_scroll_amount_) / width(); |
54 if (scrolled_ratio >= kScrollRatioForClosingNotification) { | 53 if (scrolled_ratio >= kScrollRatioForClosingNotification) { |
55 SlideOutAndClose(gesture_scroll_amount_ < 0 ? SLIDE_LEFT : SLIDE_RIGHT); | 54 SlideOutAndClose(gesture_scroll_amount_ < 0 ? SLIDE_LEFT : SLIDE_RIGHT); |
56 event->StopPropagation(); | 55 event->StopPropagation(); |
57 return; | 56 return; |
58 } | 57 } |
59 RestoreVisualState(); | 58 RestoreVisualState(); |
60 } | 59 } |
61 | 60 |
62 event->SetHandled(); | 61 event->SetHandled(); |
63 } | 62 } |
64 | 63 |
65 void SlideOutView::RestoreVisualState() { | 64 void SlideOutView::RestoreVisualState() { |
66 // Restore the layer state. | 65 // Restore the layer state. |
67 const int kSwipeRestoreDurationMS = 150; | 66 if (impl_) |
68 ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator()); | 67 impl_->RestoreView(); |
69 settings.SetTransitionDuration( | |
70 base::TimeDelta::FromMilliseconds(kSwipeRestoreDurationMS)); | |
71 layer()->SetTransform(gfx::Transform()); | |
72 layer()->SetOpacity(1.f); | |
73 } | 68 } |
74 | 69 |
75 void SlideOutView::SlideOutAndClose(SlideDirection direction) { | 70 void SlideOutView::SlideOutAndClose(SlideDirection direction) { |
76 const int kSwipeOutTotalDurationMS = 150; | 71 if (impl_) |
77 int swipe_out_duration = kSwipeOutTotalDurationMS * layer()->opacity(); | 72 impl_->HideView(direction); |
78 ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator()); | |
79 settings.SetTransitionDuration( | |
80 base::TimeDelta::FromMilliseconds(swipe_out_duration)); | |
81 settings.AddObserver(this); | |
82 | |
83 gfx::Transform transform; | |
84 transform.Translate(direction == SLIDE_LEFT ? -width() : width(), 0.0); | |
85 layer()->SetTransform(transform); | |
86 layer()->SetOpacity(0.f); | |
87 } | 73 } |
88 | 74 |
89 void SlideOutView::OnImplicitAnimationsCompleted() { | 75 void SlideOutView::OnImplicitAnimationsCompleted() { |
90 OnSlideOut(); | 76 OnSlideOut(); |
91 } | 77 } |
92 | 78 |
93 } // namespace views | 79 } // namespace views |
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