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 "ash/display/shared_display_edge_indicator.h" 6 7 #include "ash/shell.h" 8 #include "ash/shell_window_ids.h" 9 #include "ash/wm/coordinate_conversion.h" 10 #include "third_party/skia/include/core/SkColor.h" 11 #include "ui/aura/client/screen_position_client.h" 12 #include "ui/aura/window_event_dispatcher.h" 13 #include "ui/gfx/animation/throb_animation.h" 14 #include "ui/gfx/canvas.h" 15 #include "ui/gfx/display.h" 16 #include "ui/gfx/screen.h" 17 #include "ui/views/view.h" 18 #include "ui/views/widget/widget.h" 19 20 namespace ash { 21 namespace { 22 23 const int kIndicatorAnimationDurationMs = 1000; 24 25 class IndicatorView : public views::View { 26 public: 27 IndicatorView() { 28 } 29 virtual ~IndicatorView() { 30 } 31 32 void SetColor(SkColor color) { 33 color_ = color; 34 SchedulePaint(); 35 } 36 37 // views::Views overrides: 38 virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE { 39 canvas->FillRect(gfx::Rect(bounds().size()), color_); 40 } 41 42 private: 43 SkColor color_; 44 DISALLOW_COPY_AND_ASSIGN(IndicatorView); 45 }; 46 47 views::Widget* CreateWidget(const gfx::Rect& bounds, 48 views::View* contents_view) { 49 views::Widget* widget = new views::Widget; 50 views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP); 51 params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW; 52 params.keep_on_top = true; 53 // We set the context to the primary root window; this is OK because the ash 54 // stacking controller will still place us in the correct RootWindow. 55 params.context = Shell::GetPrimaryRootWindow(); 56 widget->set_focus_on_creation(false); 57 widget->Init(params); 58 widget->SetVisibilityChangedAnimationsEnabled(false); 59 widget->GetNativeWindow()->SetName("SharedEdgeIndicator"); 60 widget->SetContentsView(contents_view); 61 gfx::Display display = Shell::GetScreen()->GetDisplayMatching(bounds); 62 aura::Window* window = widget->GetNativeWindow(); 63 aura::client::ScreenPositionClient* screen_position_client = 64 aura::client::GetScreenPositionClient(window->GetRootWindow()); 65 screen_position_client->SetBounds(window, bounds, display); 66 widget->Show(); 67 return widget; 68 } 69 70 } // namespace 71 72 SharedDisplayEdgeIndicator::SharedDisplayEdgeIndicator() 73 : src_indicator_(NULL), 74 dst_indicator_(NULL) { 75 } 76 77 SharedDisplayEdgeIndicator::~SharedDisplayEdgeIndicator() { 78 Hide(); 79 } 80 81 void SharedDisplayEdgeIndicator::Show(const gfx::Rect& src_bounds, 82 const gfx::Rect& dst_bounds) { 83 DCHECK(!src_indicator_); 84 DCHECK(!dst_indicator_); 85 src_indicator_ = new IndicatorView; 86 dst_indicator_ = new IndicatorView; 87 CreateWidget(src_bounds, src_indicator_); 88 CreateWidget(dst_bounds, dst_indicator_); 89 animation_.reset(new gfx::ThrobAnimation(this)); 90 animation_->SetThrobDuration(kIndicatorAnimationDurationMs); 91 animation_->StartThrobbing(-1 /* infinite */); 92 } 93 94 void SharedDisplayEdgeIndicator::Hide() { 95 if (src_indicator_) 96 src_indicator_->GetWidget()->Close(); 97 src_indicator_ = NULL; 98 if (dst_indicator_) 99 dst_indicator_->GetWidget()->Close(); 100 dst_indicator_ = NULL; 101 } 102 103 void SharedDisplayEdgeIndicator::AnimationProgressed( 104 const gfx::Animation* animation) { 105 int value = animation->CurrentValueBetween(0, 255); 106 SkColor color = SkColorSetARGB(0xFF, value, value, value); 107 if (src_indicator_) 108 static_cast<IndicatorView*>(src_indicator_)->SetColor(color); 109 if (dst_indicator_) 110 static_cast<IndicatorView*>(dst_indicator_)->SetColor(color); 111 112 } 113 114 } // namespace ash 115