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| 1 // Copyright 2013 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 #include "cc/input/scrollbar_animation_controller_thinning.h" | |
| 6 | |
| 7 #include "base/memory/ptr_util.h" | |
| 8 #include "base/time/time.h" | |
| 9 #include "cc/layers/layer_impl.h" | |
| 10 #include "cc/layers/scrollbar_layer_impl_base.h" | |
| 11 #include "cc/trees/layer_tree_impl.h" | |
| 12 | |
| 13 namespace cc { | |
| 14 | |
| 15 std::unique_ptr<ScrollbarAnimationControllerThinning> | |
| 16 ScrollbarAnimationControllerThinning::Create( | |
| 17 int scroll_layer_id, | |
| 18 ScrollbarAnimationControllerClient* client, | |
| 19 base::TimeDelta delay_before_starting, | |
| 20 base::TimeDelta resize_delay_before_starting, | |
| 21 base::TimeDelta fade_duration, | |
| 22 base::TimeDelta thinning_duration) { | |
| 23 return base::WrapUnique(new ScrollbarAnimationControllerThinning( | |
| 24 scroll_layer_id, client, delay_before_starting, | |
| 25 resize_delay_before_starting, fade_duration, thinning_duration)); | |
| 26 } | |
| 27 | |
| 28 ScrollbarAnimationControllerThinning::ScrollbarAnimationControllerThinning( | |
| 29 int scroll_layer_id, | |
| 30 ScrollbarAnimationControllerClient* client, | |
| 31 base::TimeDelta delay_before_starting, | |
| 32 base::TimeDelta resize_delay_before_starting, | |
| 33 base::TimeDelta fade_duration, | |
| 34 base::TimeDelta thinning_duration) | |
| 35 : ScrollbarAnimationController(scroll_layer_id, | |
| 36 client, | |
| 37 delay_before_starting, | |
| 38 resize_delay_before_starting), | |
| 39 opacity_(0.0f), | |
| 40 fade_duration_(fade_duration) { | |
| 41 vertical_controller_ = SingleScrollbarAnimationControllerThinning::Create( | |
| 42 scroll_layer_id, ScrollbarOrientation::VERTICAL, client, | |
| 43 thinning_duration); | |
| 44 horizontal_controller_ = SingleScrollbarAnimationControllerThinning::Create( | |
| 45 scroll_layer_id, ScrollbarOrientation::HORIZONTAL, client, | |
| 46 thinning_duration); | |
| 47 ApplyOpacityToScrollbars(0.0f); | |
| 48 } | |
| 49 | |
| 50 ScrollbarAnimationControllerThinning::~ScrollbarAnimationControllerThinning() {} | |
| 51 | |
| 52 | |
| 53 | |
| 54 bool ScrollbarAnimationControllerThinning::ScrollbarsHidden() const { | |
| 55 return opacity_ == 0.0f; | |
| 56 } | |
| 57 | |
| 58 bool ScrollbarAnimationControllerThinning::NeedThinningAnimation() const { | |
| 59 return true; | |
| 60 } | |
| 61 | |
| 62 void ScrollbarAnimationControllerThinning::RunAnimationFrame(float progress) { | |
| 63 ApplyOpacityToScrollbars(1.f - progress); | |
| 64 if (progress == 1.f) | |
| 65 StopAnimation(); | |
| 66 } | |
| 67 | |
| 68 const base::TimeDelta& ScrollbarAnimationControllerThinning::Duration() { | |
| 69 return fade_duration_; | |
| 70 } | |
| 71 | |
| 72 void ScrollbarAnimationControllerThinning::DidScrollUpdate(bool on_resize) { | |
| 73 if (Captured()) | |
| 74 return; | |
| 75 | |
| 76 ScrollbarAnimationController::DidScrollUpdate(on_resize); | |
| 77 | |
| 78 ApplyOpacityToScrollbars(1); | |
| 79 vertical_controller_->UpdateThumbThicknessScale(); | |
| 80 horizontal_controller_->UpdateThumbThicknessScale(); | |
| 81 | |
| 82 // we started a fade out timer in | |
| 83 // |ScrollbarAnimationController::DidScrollUpdate| but don't want to | |
| 84 // fade out if the mouse is nearby. | |
| 85 if (mouse_is_near_any_scrollbar()) | |
| 86 StopAnimation(); | |
| 87 } | |
| 88 | |
| 89 void ScrollbarAnimationControllerThinning::DidScrollEnd() { | |
| 90 ScrollbarAnimationController::DidScrollEnd(); | |
| 91 | |
| 92 // Don't fade out the scrollbar when mouse is near. | |
| 93 if (mouse_is_near_any_scrollbar()) | |
| 94 StopAnimation(); | |
| 95 } | |
| 96 | |
| 97 void ScrollbarAnimationControllerThinning::ApplyOpacityToScrollbars( | |
| 98 float opacity) { | |
| 99 for (ScrollbarLayerImplBase* scrollbar : Scrollbars()) { | |
| 100 if (!scrollbar->is_overlay_scrollbar()) | |
| 101 continue; | |
| 102 float effective_opacity = scrollbar->CanScrollOrientation() ? opacity : 0; | |
| 103 PropertyTrees* property_trees = | |
| 104 scrollbar->layer_tree_impl()->property_trees(); | |
| 105 // If this method is called during LayerImpl::PushPropertiesTo, we may not | |
| 106 // yet have valid layer_id_to_effect_node_index entries as property trees | |
| 107 // are pushed after layers during activation. We can skip updating opacity | |
| 108 // in that case as we are only registering a scrollbar and because opacity | |
| 109 // will be overwritten anyway when property trees are pushed. | |
| 110 if (property_trees->IsInIdToIndexMap(PropertyTrees::TreeType::EFFECT, | |
| 111 scrollbar->id())) { | |
| 112 property_trees->effect_tree.OnOpacityAnimated( | |
| 113 effective_opacity, | |
| 114 property_trees->layer_id_to_effect_node_index[scrollbar->id()], | |
| 115 scrollbar->layer_tree_impl()); | |
| 116 } | |
| 117 } | |
| 118 | |
| 119 bool previouslyVisible = opacity_ > 0.0f; | |
| 120 bool currentlyVisible = opacity > 0.0f; | |
| 121 | |
| 122 opacity_ = opacity; | |
| 123 | |
| 124 if (previouslyVisible != currentlyVisible) | |
| 125 client_->DidChangeScrollbarVisibility(); | |
| 126 } | |
| 127 | |
| 128 } // namespace cc | |
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Chromium Code Reviews
Issue 2692243005:
Merge Compositor's ScrollbarAnimationControllers into single class (Closed)
