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 "ash/wm/overview/window_selector_panels.h" 6 7 #include "ash/screen_ash.h" 8 #include "ash/shell.h" 9 #include "ash/shell_window_ids.h" 10 #include "ash/wm/overview/scoped_transform_overview_window.h" 11 #include "ash/wm/panels/panel_layout_manager.h" 12 #include "ui/aura/client/screen_position_client.h" 13 #include "ui/aura/window.h" 14 #include "ui/compositor/layer.h" 15 #include "ui/compositor/layer_animation_observer.h" 16 #include "ui/compositor/layer_animation_sequence.h" 17 #include "ui/views/widget/widget.h" 18 19 namespace ash { 20 21 namespace { 22 23 const int kPanelCalloutFadeInDurationMilliseconds = 50; 24 25 // This class extends ScopedTransformOverviewMode to hide and show the callout 26 // widget for a panel window when entering / leaving overview mode. 27 class ScopedTransformPanelWindow : public ScopedTransformOverviewWindow { 28 public: 29 ScopedTransformPanelWindow(aura::Window* window); 30 virtual ~ScopedTransformPanelWindow(); 31 32 // ScopedTransformOverviewWindow overrides: 33 virtual void PrepareForOverview() OVERRIDE; 34 35 private: 36 // Returns the callout widget for the transformed panel. 37 views::Widget* GetCalloutWidget(); 38 39 // Restores the callout visibility. 40 void RestoreCallout(); 41 42 // Trigger relayout 43 void Relayout(); 44 45 bool callout_visible_; 46 47 DISALLOW_COPY_AND_ASSIGN(ScopedTransformPanelWindow); 48 }; 49 50 ScopedTransformPanelWindow::ScopedTransformPanelWindow(aura::Window* window) 51 : ScopedTransformOverviewWindow(window) { 52 } 53 54 ScopedTransformPanelWindow::~ScopedTransformPanelWindow() { 55 // window() will be NULL if the window was destroyed. 56 if (window()) 57 RestoreCallout(); 58 } 59 60 void ScopedTransformPanelWindow::PrepareForOverview() { 61 ScopedTransformOverviewWindow::PrepareForOverview(); 62 GetCalloutWidget()->GetLayer()->SetOpacity(0.0f); 63 } 64 65 views::Widget* ScopedTransformPanelWindow::GetCalloutWidget() { 66 DCHECK(window()->parent()->id() == internal::kShellWindowId_PanelContainer); 67 internal::PanelLayoutManager* panel_layout_manager = 68 static_cast<internal::PanelLayoutManager*>( 69 window()->parent()->layout_manager()); 70 return panel_layout_manager->GetCalloutWidgetForPanel(window()); 71 } 72 73 void ScopedTransformPanelWindow::RestoreCallout() { 74 scoped_ptr<ui::LayerAnimationSequence> sequence( 75 new ui::LayerAnimationSequence); 76 ui::LayerAnimationElement::AnimatableProperties paused_properties; 77 paused_properties.insert(ui::LayerAnimationElement::OPACITY); 78 sequence->AddElement(ui::LayerAnimationElement::CreatePauseElement( 79 paused_properties, base::TimeDelta::FromMilliseconds( 80 ScopedTransformOverviewWindow::kTransitionMilliseconds))); 81 sequence->AddElement(ui::LayerAnimationElement::CreateOpacityElement(1, 82 base::TimeDelta::FromMilliseconds( 83 kPanelCalloutFadeInDurationMilliseconds))); 84 GetCalloutWidget()->GetLayer()->GetAnimator()->StartAnimation( 85 sequence.release()); 86 } 87 88 } // namespace 89 90 WindowSelectorPanels::WindowSelectorPanels() { 91 } 92 93 WindowSelectorPanels::~WindowSelectorPanels() { 94 } 95 96 void WindowSelectorPanels::AddWindow(aura::Window* window) { 97 transform_windows_.push_back(new ScopedTransformPanelWindow(window)); 98 } 99 100 aura::Window* WindowSelectorPanels::GetRootWindow() { 101 return transform_windows_.front()->window()->GetRootWindow(); 102 } 103 104 bool WindowSelectorPanels::HasSelectableWindow(const aura::Window* window) { 105 for (WindowList::const_iterator iter = transform_windows_.begin(); 106 iter != transform_windows_.end(); ++iter) { 107 if ((*iter)->window() == window) 108 return true; 109 } 110 return false; 111 } 112 113 aura::Window* WindowSelectorPanels::TargetedWindow(const aura::Window* target) { 114 for (WindowList::const_iterator iter = transform_windows_.begin(); 115 iter != transform_windows_.end(); ++iter) { 116 if ((*iter)->Contains(target)) 117 return (*iter)->window(); 118 } 119 return NULL; 120 } 121 122 void WindowSelectorPanels::RestoreWindowOnExit(aura::Window* window) { 123 for (WindowList::iterator iter = transform_windows_.begin(); 124 iter != transform_windows_.end(); ++iter) { 125 if ((*iter)->Contains(window)) { 126 (*iter)->RestoreWindowOnExit(); 127 break; 128 } 129 } 130 } 131 132 aura::Window* WindowSelectorPanels::SelectionWindow() { 133 return transform_windows_.front()->window(); 134 } 135 136 void WindowSelectorPanels::RemoveWindow(const aura::Window* window) { 137 for (WindowList::iterator iter = transform_windows_.begin(); 138 iter != transform_windows_.end(); ++iter) { 139 if ((*iter)->window() == window) { 140 (*iter)->OnWindowDestroyed(); 141 transform_windows_.erase(iter); 142 break; 143 } 144 } 145 } 146 147 bool WindowSelectorPanels::empty() const { 148 return transform_windows_.empty(); 149 } 150 151 void WindowSelectorPanels::PrepareForOverview() { 152 for (WindowList::iterator iter = transform_windows_.begin(); 153 iter != transform_windows_.end(); ++iter) { 154 (*iter)->PrepareForOverview(); 155 } 156 } 157 158 void WindowSelectorPanels::SetItemBounds(aura::Window* root_window, 159 const gfx::Rect& target_bounds, 160 bool animate) { 161 gfx::Rect bounding_rect; 162 for (WindowList::iterator iter = transform_windows_.begin(); 163 iter != transform_windows_.end(); ++iter) { 164 bounding_rect.Union((*iter)->GetBoundsInScreen()); 165 } 166 set_bounds(ScopedTransformOverviewWindow:: 167 ShrinkRectToFitPreservingAspectRatio(bounding_rect, target_bounds)); 168 gfx::Transform bounding_transform = 169 ScopedTransformOverviewWindow::GetTransformForRect(bounding_rect, 170 bounds()); 171 for (WindowList::iterator iter = transform_windows_.begin(); 172 iter != transform_windows_.end(); ++iter) { 173 gfx::Transform transform; 174 gfx::Rect bounds = (*iter)->GetBoundsInScreen(); 175 transform.Translate(bounding_rect.x() - bounds.x(), 176 bounding_rect.y() - bounds.y()); 177 transform.PreconcatTransform(bounding_transform); 178 transform.Translate(bounds.x() - bounding_rect.x(), 179 bounds.y() - bounding_rect.y()); 180 (*iter)->SetTransform(root_window, transform, animate); 181 } 182 } 183 184 } // namespace ash 185
