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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 #include "ui/app_list/pulsing_block_view.h" | |
| 6 | |
| 7 #include <vector> | |
| 8 | |
| 9 #include "base/rand_util.h" | |
| 10 #include "third_party/skia/include/core/SkColor.h" | |
| 11 #include "ui/compositor/layer_animation_element.h" | |
| 12 #include "ui/compositor/layer_animation_sequence.h" | |
| 13 #include "ui/compositor/layer_animator.h" | |
| 14 #include "ui/compositor/layer.h" | |
| 15 #include "ui/gfx/canvas.h" | |
| 16 #include "ui/gfx/transform_util.h" | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 const SkColor kBlockColor = SkColorSetRGB(225, 225, 225); | |
| 21 const int kBlockSize = 64; | |
| 22 | |
| 23 const int kAnimationDurationInMs = 600; | |
| 24 const float kAnimationOpacity[] = { 0.4f, 0.8f, 0.4f }; | |
| 25 const float kAnimationScale[] = { 0.8f, 1.0f, 0.8f }; | |
| 26 | |
| 27 void SchedulePulsingAnimation(ui::Layer* layer) { | |
| 28 DCHECK(layer); | |
| 29 DCHECK_EQ(arraysize(kAnimationOpacity), arraysize(kAnimationScale)); | |
| 30 | |
| 31 scoped_ptr<ui::LayerAnimationSequence> opacity_sequence( | |
| 32 new ui::LayerAnimationSequence()); | |
| 33 scoped_ptr<ui::LayerAnimationSequence> transform_sequence( | |
| 34 new ui::LayerAnimationSequence()); | |
| 35 | |
| 36 // The animations loop infinitely. | |
| 37 opacity_sequence->set_is_cyclic(true); | |
| 38 transform_sequence->set_is_cyclic(true); | |
| 39 | |
| 40 const gfx::Rect local_bounds(layer->bounds().size()); | |
| 41 for (size_t i = 0; i < arraysize(kAnimationOpacity); ++i) { | |
| 42 opacity_sequence->AddElement( | |
| 43 ui::LayerAnimationElement::CreateOpacityElement( | |
| 44 kAnimationOpacity[i], | |
| 45 base::TimeDelta::FromMilliseconds(kAnimationDurationInMs))); | |
| 46 transform_sequence->AddElement( | |
| 47 ui::LayerAnimationElement::CreateTransformElement( | |
| 48 gfx::GetScaleTransform(local_bounds.CenterPoint(), | |
| 49 kAnimationScale[i]), | |
| 50 base::TimeDelta::FromMilliseconds(kAnimationDurationInMs))); | |
| 51 } | |
| 52 | |
| 53 ui::LayerAnimationElement::AnimatableProperties opacity_properties; | |
| 54 opacity_properties.insert(ui::LayerAnimationElement::OPACITY); | |
| 55 opacity_sequence->AddElement( | |
| 56 ui::LayerAnimationElement::CreatePauseElement( | |
| 57 opacity_properties, | |
| 58 base::TimeDelta::FromMilliseconds(kAnimationDurationInMs))); | |
| 59 | |
| 60 ui::LayerAnimationElement::AnimatableProperties transform_properties; | |
| 61 transform_properties.insert(ui::LayerAnimationElement::TRANSFORM); | |
| 62 transform_sequence->AddElement( | |
| 63 ui::LayerAnimationElement::CreatePauseElement( | |
| 64 transform_properties, | |
| 65 base::TimeDelta::FromMilliseconds(kAnimationDurationInMs))); | |
| 66 | |
| 67 std::vector<ui::LayerAnimationSequence*> animations; | |
| 68 animations.push_back(opacity_sequence.release()); | |
| 69 animations.push_back(transform_sequence.release()); | |
| 70 layer->GetAnimator()->ScheduleTogether(animations); | |
| 71 } | |
| 72 | |
| 73 } // namespace | |
| 74 | |
| 75 namespace app_list { | |
| 76 | |
| 77 PulsingBlockView::PulsingBlockView(const gfx::Size& size, bool start_delay) { | |
| 78 #if defined(USE_AURA) | |
| 79 SetPaintToLayer(true); | |
| 80 SetFillsBoundsOpaquely(false); | |
| 81 | |
| 82 const int max_delay = kAnimationDurationInMs * arraysize(kAnimationOpacity); | |
| 83 const int delay = start_delay ? base::RandInt(0, max_delay) : 0; | |
| 84 start_delay_timer_.Start( | |
| 85 FROM_HERE, | |
| 86 base::TimeDelta::FromMilliseconds(delay), | |
| 87 this, &PulsingBlockView::OnStartDelayTimer); | |
| 88 #else | |
| 89 NOTREACHED() << "Pulsing animation is not supported on Windows"; | |
| 90 #endif | |
| 91 } | |
| 92 | |
| 93 PulsingBlockView::~PulsingBlockView() { | |
| 94 } | |
| 95 | |
| 96 void PulsingBlockView::OnStartDelayTimer() { | |
| 97 SchedulePulsingAnimation(layer()); | |
| 98 } | |
| 99 | |
| 100 void PulsingBlockView::OnPaint(gfx::Canvas* canvas) { | |
| 101 gfx::Rect rect(GetContentsBounds()); | |
| 102 rect.ClampToCenteredSize(gfx::Size(kBlockSize, kBlockSize)); | |
| 103 canvas->FillRect(rect, kBlockColor); | |
| 104 } | |
| 105 | |
| 106 } // namespace app_list | |
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Chromium Code Reviews
Issue 11784034:
Skeleton for app_list on OSX, and refactoring for enable_app_list=1 on OS=="mac". (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master