ash/wm/workspace_controller.cc

   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/wm/workspace_controller.h"
   6
   7 #include "ash/root_window_controller.h"
   8 #include "ash/shelf/shelf_layout_manager.h"
   9 #include "ash/shell.h"
  10 #include "ash/shell_window_ids.h"
  11 #include "ash/wm/window_animations.h"
  12 #include "ash/wm/window_state.h"
  13 #include "ash/wm/window_util.h"
  14 #include "ash/wm/workspace/workspace_event_handler.h"
  15 #include "ash/wm/workspace/workspace_layout_manager.h"
  16 #include "ash/wm/workspace/workspace_layout_manager_delegate.h"
  17 #include "ui/aura/client/aura_constants.h"
  18 #include "ui/aura/window.h"
  19 #include "ui/aura/window_event_dispatcher.h"
  20 #include "ui/compositor/layer.h"
  21 #include "ui/compositor/scoped_layer_animation_settings.h"
  22 #include "ui/wm/core/visibility_controller.h"
  23 #include "ui/wm/core/window_animations.h"
  24 #include "ui/wm/public/activation_client.h"
  25
  26 namespace ash {
  27 namespace {
  28
  29 // Amount of time to pause before animating anything. Only used during initial
  30 // animation (when logging in).
  31 const int kInitialPauseTimeMS = 750;
  32
  33 // Returns true if there are visible docked windows in the same screen as the
  34 // |shelf|.
  35 bool IsDockedAreaVisible(const ShelfLayoutManager* shelf) {
  36   return shelf->dock_bounds().width() > 0;
  37 }
  38
  39 }  // namespace
  40
  41 WorkspaceController::WorkspaceController(aura::Window* viewport)
  42     : viewport_(viewport),
  43       shelf_(NULL),
  44       event_handler_(new WorkspaceEventHandler),
  45       layout_manager_(new WorkspaceLayoutManager(viewport)) {
  46   SetWindowVisibilityAnimationTransition(
  47       viewport_, ::wm::ANIMATE_NONE);
  48
  49   viewport_->SetLayoutManager(layout_manager_);
  50   viewport_->AddPreTargetHandler(event_handler_.get());
  51 }
  52
  53 WorkspaceController::~WorkspaceController() {
  54   viewport_->SetLayoutManager(NULL);
  55   viewport_->RemovePreTargetHandler(event_handler_.get());
  56 }
  57
  58 WorkspaceWindowState WorkspaceController::GetWindowState() const {
  59   if (!shelf_)
  60     return WORKSPACE_WINDOW_STATE_DEFAULT;
  61   const aura::Window* topmost_fullscreen_window = GetRootWindowController(
  62       viewport_->GetRootWindow())->GetWindowForFullscreenMode();
  63   if (topmost_fullscreen_window &&
  64       !wm::GetWindowState(topmost_fullscreen_window)->ignored_by_shelf()) {
  65     return WORKSPACE_WINDOW_STATE_FULL_SCREEN;
  66   }
  67
  68   // These are the container ids of containers which may contain windows that
  69   // may overlap the launcher shelf and affect its transparency.
  70   const int kWindowContainerIds[] = {kShellWindowId_DefaultContainer,
  71                                      kShellWindowId_DockedContainer, };
  72   const gfx::Rect shelf_bounds(shelf_->GetIdealBounds());
  73   bool window_overlaps_launcher = false;
  74   for (size_t idx = 0; idx < arraysize(kWindowContainerIds); idx++) {
  75     const aura::Window* container = Shell::GetContainer(
  76         viewport_->GetRootWindow(), kWindowContainerIds[idx]);
  77     const aura::Window::Windows& windows(container->children());
  78     for (aura::Window::Windows::const_iterator i = windows.begin();
  79          i != windows.end(); ++i) {
  80       wm::WindowState* window_state = wm::GetWindowState(*i);
  81       if (window_state->ignored_by_shelf())
  82         continue;
  83       ui::Layer* layer = (*i)->layer();
  84       if (!layer->GetTargetVisibility())
  85         continue;
  86       if (window_state->IsMaximized())
  87         return WORKSPACE_WINDOW_STATE_MAXIMIZED;
  88       if (!window_overlaps_launcher &&
  89           ((*i)->bounds().Intersects(shelf_bounds))) {
  90         window_overlaps_launcher = true;
  91       }
  92     }
  93   }
  94
  95   return (window_overlaps_launcher || IsDockedAreaVisible(shelf_)) ?
  96       WORKSPACE_WINDOW_STATE_WINDOW_OVERLAPS_SHELF :
  97       WORKSPACE_WINDOW_STATE_DEFAULT;
  98 }
  99
 100 void WorkspaceController::SetShelf(ShelfLayoutManager* shelf) {
 101   shelf_ = shelf;
 102   layout_manager_->SetShelf(shelf);
 103 }
 104
 105 void WorkspaceController::DoInitialAnimation() {
 106   viewport_->Show();
 107
 108   viewport_->layer()->SetOpacity(0.0f);
 109   SetTransformForScaleAnimation(
 110       viewport_->layer(), LAYER_SCALE_ANIMATION_ABOVE);
 111
 112   // In order for pause to work we need to stop animations.
 113   viewport_->layer()->GetAnimator()->StopAnimating();
 114
 115   {
 116     ui::ScopedLayerAnimationSettings settings(
 117         viewport_->layer()->GetAnimator());
 118
 119     settings.SetPreemptionStrategy(ui::LayerAnimator::ENQUEUE_NEW_ANIMATION);
 120     viewport_->layer()->GetAnimator()->SchedulePauseForProperties(
 121         base::TimeDelta::FromMilliseconds(kInitialPauseTimeMS),
 122         ui::LayerAnimationElement::TRANSFORM |
 123             ui::LayerAnimationElement::OPACITY |
 124             ui::LayerAnimationElement::BRIGHTNESS |
 125             ui::LayerAnimationElement::VISIBILITY);
 126     settings.SetTweenType(gfx::Tween::EASE_OUT);
 127     settings.SetTransitionDuration(
 128         base::TimeDelta::FromMilliseconds(kCrossFadeDurationMS));
 129     viewport_->layer()->SetTransform(gfx::Transform());
 130     viewport_->layer()->SetOpacity(1.0f);
 131   }
 132 }
 133
 134 void WorkspaceController::SetMaximizeBackdropDelegate(
 135     scoped_ptr<WorkspaceLayoutManagerDelegate> delegate) {
 136   layout_manager_->SetMaximizeBackdropDelegate(delegate.Pass());
 137 }
 138
 139 }  // namespace ash