// Copyright (c) 2012 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "ash/shelf/shelf_layout_manager.h" #include #include #include #include #include #include "ash/accelerators/accelerator_commands.h" #include "ash/ash_switches.h" #include "ash/root_window_controller.h" #include "ash/screen_util.h" #include "ash/session/session_state_delegate.h" #include "ash/shelf/shelf.h" #include "ash/shelf/shelf_bezel_event_filter.h" #include "ash/shelf/shelf_constants.h" #include "ash/shelf/shelf_layout_manager_observer.h" #include "ash/shelf/shelf_widget.h" #include "ash/shell.h" #include "ash/shell_window_ids.h" #include "ash/system/status_area_widget.h" #include "ash/wm/gestures/shelf_gesture_handler.h" #include "ash/wm/lock_state_controller.h" #include "ash/wm/mru_window_tracker.h" #include "ash/wm/window_animations.h" #include "ash/wm/window_state.h" #include "ash/wm/window_util.h" #include "ash/wm/workspace_controller.h" #include "base/auto_reset.h" #include "base/command_line.h" #include "base/command_line.h" #include "base/i18n/rtl.h" #include "base/strings/string_number_conversions.h" #include "base/strings/string_util.h" #include "ui/aura/client/cursor_client.h" #include "ui/aura/window_event_dispatcher.h" #include "ui/base/ui_base_switches.h" #include "ui/compositor/layer.h" #include "ui/compositor/layer_animation_observer.h" #include "ui/compositor/layer_animator.h" #include "ui/compositor/scoped_layer_animation_settings.h" #include "ui/events/event.h" #include "ui/events/event_handler.h" #include "ui/gfx/screen.h" #include "ui/keyboard/keyboard_util.h" #include "ui/views/widget/widget.h" #include "ui/wm/public/activation_client.h" namespace ash { namespace { // Delay before showing the shelf. This is after the mouse stops moving. const int kAutoHideDelayMS = 200; // To avoid hiding the shelf when the mouse transitions from a message bubble // into the shelf, the hit test area is enlarged by this amount of pixels to // keep the shelf from hiding. const int kNotificationBubbleGapHeight = 6; // The maximum size of the region on the display opposing the shelf managed by // this ShelfLayoutManager which can trigger showing the shelf. // For instance: // - Primary display is left of secondary display. // - Shelf is left aligned // - This ShelfLayoutManager manages the shelf for the secondary display. // |kMaxAutoHideShowShelfRegionSize| refers to the maximum size of the region // from the right edge of the primary display which can trigger showing the // auto hidden shelf. The region is used to make it easier to trigger showing // the auto hidden shelf when the shelf is on the boundary between displays. const int kMaxAutoHideShowShelfRegionSize = 10; ui::Layer* GetLayer(views::Widget* widget) { return widget->GetNativeView()->layer(); } bool IsDraggingTrayEnabled() { static bool dragging_tray_allowed = base::CommandLine::ForCurrentProcess()-> HasSwitch(ash::switches::kAshEnableTrayDragging); return dragging_tray_allowed; } } // namespace // static const int ShelfLayoutManager::kWorkspaceAreaVisibleInset = 2; // static const int ShelfLayoutManager::kWorkspaceAreaAutoHideInset = 5; // static const int ShelfLayoutManager::kAutoHideSize = 3; // static const int ShelfLayoutManager::kShelfItemInset = 3; // ShelfLayoutManager::AutoHideEventFilter ------------------------------------- // Notifies ShelfLayoutManager any time the mouse moves. class ShelfLayoutManager::AutoHideEventFilter : public ui::EventHandler { public: explicit AutoHideEventFilter(ShelfLayoutManager* shelf); ~AutoHideEventFilter() override; // Returns true if the last mouse event was a mouse drag. bool in_mouse_drag() const { return in_mouse_drag_; } // Overridden from ui::EventHandler: void OnMouseEvent(ui::MouseEvent* event) override; void OnGestureEvent(ui::GestureEvent* event) override; private: ShelfLayoutManager* shelf_; bool in_mouse_drag_; ShelfGestureHandler gesture_handler_; DISALLOW_COPY_AND_ASSIGN(AutoHideEventFilter); }; ShelfLayoutManager::AutoHideEventFilter::AutoHideEventFilter( ShelfLayoutManager* shelf) : shelf_(shelf), in_mouse_drag_(false) { Shell::GetInstance()->AddPreTargetHandler(this); } ShelfLayoutManager::AutoHideEventFilter::~AutoHideEventFilter() { Shell::GetInstance()->RemovePreTargetHandler(this); } void ShelfLayoutManager::AutoHideEventFilter::OnMouseEvent( ui::MouseEvent* event) { // This also checks IsShelfWindow() to make sure we don't attempt to hide the // shelf if the mouse down occurs on the shelf. in_mouse_drag_ = (event->type() == ui::ET_MOUSE_DRAGGED || (in_mouse_drag_ && event->type() != ui::ET_MOUSE_RELEASED && event->type() != ui::ET_MOUSE_CAPTURE_CHANGED)) && !shelf_->IsShelfWindow(static_cast(event->target())); if (event->type() == ui::ET_MOUSE_MOVED) shelf_->UpdateAutoHideState(); return; } void ShelfLayoutManager::AutoHideEventFilter::OnGestureEvent( ui::GestureEvent* event) { if (shelf_->IsShelfWindow(static_cast(event->target()))) { if (gesture_handler_.ProcessGestureEvent(*event)) event->StopPropagation(); } } // ShelfLayoutManager:UpdateShelfObserver -------------------------------------- // UpdateShelfObserver is used to delay updating the background until the // animation completes. class ShelfLayoutManager::UpdateShelfObserver : public ui::ImplicitAnimationObserver { public: explicit UpdateShelfObserver(ShelfLayoutManager* shelf) : shelf_(shelf) { shelf_->update_shelf_observer_ = this; } void Detach() { shelf_ = NULL; } void OnImplicitAnimationsCompleted() override { if (shelf_) shelf_->UpdateShelfBackground(BACKGROUND_CHANGE_ANIMATE); delete this; } private: ~UpdateShelfObserver() override { if (shelf_) shelf_->update_shelf_observer_ = NULL; } // Shelf we're in. NULL if deleted before we're deleted. ShelfLayoutManager* shelf_; DISALLOW_COPY_AND_ASSIGN(UpdateShelfObserver); }; // ShelfLayoutManager ---------------------------------------------------------- ShelfLayoutManager::ShelfLayoutManager(ShelfWidget* shelf) : SnapToPixelLayoutManager(shelf->GetNativeView()->parent()), root_window_(shelf->GetNativeView()->GetRootWindow()), updating_bounds_(false), auto_hide_behavior_(SHELF_AUTO_HIDE_BEHAVIOR_NEVER), alignment_(SHELF_ALIGNMENT_BOTTOM), shelf_(shelf), workspace_controller_(NULL), window_overlaps_shelf_(false), mouse_over_shelf_when_auto_hide_timer_started_(false), bezel_event_filter_(new ShelfBezelEventFilter(this)), gesture_drag_status_(GESTURE_DRAG_NONE), gesture_drag_amount_(0.f), gesture_drag_auto_hide_state_(SHELF_AUTO_HIDE_SHOWN), update_shelf_observer_(NULL), duration_override_in_ms_(0) { Shell::GetInstance()->AddShellObserver(this); Shell::GetInstance()->lock_state_controller()->AddObserver(this); aura::client::GetActivationClient(root_window_)->AddObserver(this); Shell::GetInstance()->session_state_delegate()->AddSessionStateObserver(this); } ShelfLayoutManager::~ShelfLayoutManager() { if (update_shelf_observer_) update_shelf_observer_->Detach(); FOR_EACH_OBSERVER(ShelfLayoutManagerObserver, observers_, WillDeleteShelf()); Shell::GetInstance()->RemoveShellObserver(this); Shell::GetInstance()->lock_state_controller()->RemoveObserver(this); aura::client::GetActivationClient(root_window_)->RemoveObserver(this); Shell::GetInstance()-> session_state_delegate()->RemoveSessionStateObserver(this); } void ShelfLayoutManager::SetAutoHideBehavior(ShelfAutoHideBehavior behavior) { if (auto_hide_behavior_ == behavior) return; auto_hide_behavior_ = behavior; UpdateVisibilityState(); FOR_EACH_OBSERVER(ShelfLayoutManagerObserver, observers_, OnAutoHideBehaviorChanged(root_window_, auto_hide_behavior_)); } void ShelfLayoutManager::PrepareForShutdown() { // Clear all event filters, otherwise sometimes those filters may catch // synthesized mouse event and cause crashes during the shutdown. set_workspace_controller(NULL); auto_hide_event_filter_.reset(); bezel_event_filter_.reset(); } bool ShelfLayoutManager::IsVisible() const { // status_area_widget() may be NULL during the shutdown. return shelf_->status_area_widget() && shelf_->status_area_widget()->IsVisible() && (state_.visibility_state == SHELF_VISIBLE || (state_.visibility_state == SHELF_AUTO_HIDE && state_.auto_hide_state == SHELF_AUTO_HIDE_SHOWN)); } bool ShelfLayoutManager::SetAlignment(ShelfAlignment alignment) { if (alignment_ == alignment) return false; // This should not be called during the lock screen transitions. DCHECK(!Shell::GetInstance()->session_state_delegate()->IsScreenLocked()); alignment_ = alignment; shelf_->SetAlignment(alignment); LayoutShelf(); return true; } ShelfAlignment ShelfLayoutManager::GetAlignment() const { // When the screen is locked, the shelf is forced into bottom alignment. if (Shell::GetInstance()->session_state_delegate()->IsScreenLocked()) return SHELF_ALIGNMENT_BOTTOM; return alignment_; } gfx::Rect ShelfLayoutManager::GetIdealBounds() { gfx::Rect bounds( ScreenUtil::GetDisplayBoundsInParent(shelf_->GetNativeView())); int width = 0, height = 0; GetShelfSize(&width, &height); return SelectValueForShelfAlignment( gfx::Rect(bounds.x(), bounds.bottom() - height, bounds.width(), height), gfx::Rect(bounds.x(), bounds.y(), width, bounds.height()), gfx::Rect(bounds.right() - width, bounds.y(), width, bounds.height()), gfx::Rect(bounds.x(), bounds.y(), bounds.width(), height)); } void ShelfLayoutManager::LayoutShelf() { TargetBounds target_bounds; CalculateTargetBounds(state_, &target_bounds); UpdateBoundsAndOpacity(target_bounds, false, NULL); if (shelf_->shelf()) { // This is not part of UpdateBoundsAndOpacity() because // SetShelfViewBounds() sets the bounds immediately and does not animate. // The height of the ShelfView for a horizontal shelf and the width of // the ShelfView for a vertical shelf are set when |shelf_|'s bounds // are changed via UpdateBoundsAndOpacity(). This sets the origin and the // dimension in the other direction. shelf_->shelf()->SetShelfViewBounds( target_bounds.shelf_bounds_in_shelf); } } ShelfVisibilityState ShelfLayoutManager::CalculateShelfVisibility() { switch(auto_hide_behavior_) { case SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS: return SHELF_AUTO_HIDE; case SHELF_AUTO_HIDE_BEHAVIOR_NEVER: return SHELF_VISIBLE; case SHELF_AUTO_HIDE_ALWAYS_HIDDEN: return SHELF_HIDDEN; } return SHELF_VISIBLE; } void ShelfLayoutManager::UpdateVisibilityState() { // Bail out early when there is no |workspace_controller_|, which happens // during shutdown after PrepareForShutdown. if (!workspace_controller_) return; if (Shell::GetInstance()->session_state_delegate()->IsScreenLocked()) { SetState(SHELF_VISIBLE); } else { // TODO(zelidrag): Verify shelf drag animation still shows on the device // when we are in SHELF_AUTO_HIDE_ALWAYS_HIDDEN. WorkspaceWindowState window_state(workspace_controller_->GetWindowState()); switch (window_state) { case WORKSPACE_WINDOW_STATE_FULL_SCREEN: { const aura::Window* fullscreen_window = GetRootWindowController( root_window_)->GetWindowForFullscreenMode(); if (fullscreen_window && wm::GetWindowState(fullscreen_window)-> hide_shelf_when_fullscreen()) { SetState(SHELF_HIDDEN); } else { // The shelf is sometimes not hidden when in immersive fullscreen. // Force the shelf to be auto hidden in this case. SetState(SHELF_AUTO_HIDE); } break; } case WORKSPACE_WINDOW_STATE_MAXIMIZED: SetState(CalculateShelfVisibility()); break; case WORKSPACE_WINDOW_STATE_WINDOW_OVERLAPS_SHELF: case WORKSPACE_WINDOW_STATE_DEFAULT: SetState(CalculateShelfVisibility()); SetWindowOverlapsShelf(window_state == WORKSPACE_WINDOW_STATE_WINDOW_OVERLAPS_SHELF); break; } } } void ShelfLayoutManager::UpdateAutoHideState() { ShelfAutoHideState auto_hide_state = CalculateAutoHideState(state_.visibility_state); if (auto_hide_state != state_.auto_hide_state) { if (auto_hide_state == SHELF_AUTO_HIDE_HIDDEN) { // Hides happen immediately. SetState(state_.visibility_state); } else { if (!auto_hide_timer_.IsRunning()) { mouse_over_shelf_when_auto_hide_timer_started_ = shelf_->GetWindowBoundsInScreen().Contains( Shell::GetScreen()->GetCursorScreenPoint()); } auto_hide_timer_.Start( FROM_HERE, base::TimeDelta::FromMilliseconds(kAutoHideDelayMS), this, &ShelfLayoutManager::UpdateAutoHideStateNow); } } else { StopAutoHideTimer(); } } void ShelfLayoutManager::SetWindowOverlapsShelf(bool value) { window_overlaps_shelf_ = value; UpdateShelfBackground(BACKGROUND_CHANGE_ANIMATE); } void ShelfLayoutManager::AddObserver(ShelfLayoutManagerObserver* observer) { observers_.AddObserver(observer); } void ShelfLayoutManager::RemoveObserver(ShelfLayoutManagerObserver* observer) { observers_.RemoveObserver(observer); } //////////////////////////////////////////////////////////////////////////////// // ShelfLayoutManager, Gesture functions: void ShelfLayoutManager::OnGestureEdgeSwipe(const ui::GestureEvent& gesture) { if (visibility_state() == SHELF_AUTO_HIDE) { gesture_drag_auto_hide_state_ = SHELF_AUTO_HIDE_SHOWN; gesture_drag_status_ = GESTURE_DRAG_COMPLETE_IN_PROGRESS; UpdateVisibilityState(); gesture_drag_status_ = GESTURE_DRAG_NONE; } } void ShelfLayoutManager::StartGestureDrag(const ui::GestureEvent& gesture) { gesture_drag_status_ = GESTURE_DRAG_IN_PROGRESS; gesture_drag_amount_ = 0.f; gesture_drag_auto_hide_state_ = visibility_state() == SHELF_AUTO_HIDE ? auto_hide_state() : SHELF_AUTO_HIDE_SHOWN; UpdateShelfBackground(BACKGROUND_CHANGE_ANIMATE); } ShelfLayoutManager::DragState ShelfLayoutManager::UpdateGestureDrag( const ui::GestureEvent& gesture) { bool horizontal = IsHorizontalAlignment(); gesture_drag_amount_ += horizontal ? gesture.details().scroll_y() : gesture.details().scroll_x(); LayoutShelf(); // Start reveling the status menu when: // - dragging up on an already visible shelf // - dragging up on a hidden shelf, but it is currently completely visible. if (horizontal && gesture.details().scroll_y() < 0) { int min_height = 0; if (gesture_drag_auto_hide_state_ == SHELF_AUTO_HIDE_HIDDEN && shelf_) min_height = shelf_->GetContentsView()->GetPreferredSize().height(); if (min_height < shelf_->GetWindowBoundsInScreen().height() && gesture.root_location().x() >= shelf_->status_area_widget()->GetWindowBoundsInScreen().x() && IsDraggingTrayEnabled()) return DRAG_TRAY; } return DRAG_SHELF; } void ShelfLayoutManager::CompleteGestureDrag(const ui::GestureEvent& gesture) { bool horizontal = IsHorizontalAlignment(); bool should_change = false; if (gesture.type() == ui::ET_GESTURE_SCROLL_END) { // The visibility of the shelf changes only if the shelf was dragged X% // along the correct axis. If the shelf was already visible, then the // direction of the drag does not matter. const float kDragHideThreshold = 0.4f; gfx::Rect bounds = GetIdealBounds(); float drag_ratio = fabs(gesture_drag_amount_) / (horizontal ? bounds.height() : bounds.width()); if (gesture_drag_auto_hide_state_ == SHELF_AUTO_HIDE_SHOWN) { should_change = drag_ratio > kDragHideThreshold; } else { bool correct_direction = false; switch (GetAlignment()) { case SHELF_ALIGNMENT_BOTTOM: case SHELF_ALIGNMENT_RIGHT: correct_direction = gesture_drag_amount_ < 0; break; case SHELF_ALIGNMENT_LEFT: case SHELF_ALIGNMENT_TOP: correct_direction = gesture_drag_amount_ > 0; break; } should_change = correct_direction && drag_ratio > kDragHideThreshold; } } else if (gesture.type() == ui::ET_SCROLL_FLING_START) { if (gesture_drag_auto_hide_state_ == SHELF_AUTO_HIDE_SHOWN) { should_change = horizontal ? fabs(gesture.details().velocity_y()) > 0 : fabs(gesture.details().velocity_x()) > 0; } else { should_change = SelectValueForShelfAlignment( gesture.details().velocity_y() < 0, gesture.details().velocity_x() > 0, gesture.details().velocity_x() < 0, gesture.details().velocity_y() > 0); } } else { NOTREACHED(); } if (!should_change) { CancelGestureDrag(); return; } if (shelf_) { shelf_->Deactivate(); shelf_->status_area_widget()->Deactivate(); } gesture_drag_auto_hide_state_ = gesture_drag_auto_hide_state_ == SHELF_AUTO_HIDE_SHOWN ? SHELF_AUTO_HIDE_HIDDEN : SHELF_AUTO_HIDE_SHOWN; ShelfAutoHideBehavior new_auto_hide_behavior = gesture_drag_auto_hide_state_ == SHELF_AUTO_HIDE_SHOWN ? SHELF_AUTO_HIDE_BEHAVIOR_NEVER : SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS; // When in fullscreen and the shelf is forced to be auto hidden, the auto hide // behavior affects neither the visibility state nor the auto hide state. Set // |gesture_drag_status_| to GESTURE_DRAG_COMPLETE_IN_PROGRESS to set the auto // hide state to |gesture_drag_auto_hide_state_|. gesture_drag_status_ = GESTURE_DRAG_COMPLETE_IN_PROGRESS; if (auto_hide_behavior_ != new_auto_hide_behavior) SetAutoHideBehavior(new_auto_hide_behavior); else UpdateVisibilityState(); gesture_drag_status_ = GESTURE_DRAG_NONE; } void ShelfLayoutManager::CancelGestureDrag() { gesture_drag_status_ = GESTURE_DRAG_CANCEL_IN_PROGRESS; UpdateVisibilityState(); gesture_drag_status_ = GESTURE_DRAG_NONE; } void ShelfLayoutManager::SetAnimationDurationOverride( int duration_override_in_ms) { duration_override_in_ms_ = duration_override_in_ms; } //////////////////////////////////////////////////////////////////////////////// // ShelfLayoutManager, aura::LayoutManager implementation: void ShelfLayoutManager::OnWindowResized() { LayoutShelf(); } void ShelfLayoutManager::SetChildBounds(aura::Window* child, const gfx::Rect& requested_bounds) { SnapToPixelLayoutManager::SetChildBounds(child, requested_bounds); // We may contain other widgets (such as frame maximize bubble) but they don't // effect the layout in anyway. if (!updating_bounds_ && ((shelf_->GetNativeView() == child) || (shelf_->status_area_widget()->GetNativeView() == child))) { LayoutShelf(); } } void ShelfLayoutManager::OnLockStateChanged(bool locked) { // Force the shelf to layout for alignment (bottom if locked, restore // the previous alignment otherwise). state_.is_screen_locked = locked; shelf_->SetAlignment(locked ? SHELF_ALIGNMENT_BOTTOM : alignment_); UpdateVisibilityState(); LayoutShelf(); } void ShelfLayoutManager::OnWindowActivated(aura::Window* gained_active, aura::Window* lost_active) { UpdateAutoHideStateNow(); } bool ShelfLayoutManager::IsHorizontalAlignment() const { return GetAlignment() == SHELF_ALIGNMENT_BOTTOM || GetAlignment() == SHELF_ALIGNMENT_TOP; } // static ShelfLayoutManager* ShelfLayoutManager::ForShelf(aura::Window* window) { ShelfWidget* shelf = RootWindowController::ForShelf(window)->shelf(); return shelf ? shelf->shelf_layout_manager() : NULL; } //////////////////////////////////////////////////////////////////////////////// // ShelfLayoutManager, private: ShelfLayoutManager::TargetBounds::TargetBounds() : opacity(0.0f) {} ShelfLayoutManager::TargetBounds::~TargetBounds() {} void ShelfLayoutManager::SetState(ShelfVisibilityState visibility_state) { if (!shelf_->GetNativeView()) return; State state; state.visibility_state = visibility_state; state.auto_hide_state = CalculateAutoHideState(visibility_state); state.window_state = workspace_controller_ ? workspace_controller_->GetWindowState() : WORKSPACE_WINDOW_STATE_DEFAULT; // Force an update because gesture drags affect the shelf bounds and we // should animate back to the normal bounds at the end of a gesture. bool force_update = (gesture_drag_status_ == GESTURE_DRAG_CANCEL_IN_PROGRESS || gesture_drag_status_ == GESTURE_DRAG_COMPLETE_IN_PROGRESS); if (!force_update && state_.Equals(state)) return; // Nothing changed. FOR_EACH_OBSERVER(ShelfLayoutManagerObserver, observers_, WillChangeVisibilityState(visibility_state)); if (state.visibility_state == SHELF_AUTO_HIDE) { // When state is SHELF_AUTO_HIDE we need to track when the mouse is over the // shelf to unhide it. AutoHideEventFilter does that for us. if (!auto_hide_event_filter_) auto_hide_event_filter_.reset(new AutoHideEventFilter(this)); } else { auto_hide_event_filter_.reset(NULL); } StopAutoHideTimer(); State old_state = state_; state_ = state; BackgroundAnimatorChangeType change_type = BACKGROUND_CHANGE_ANIMATE; bool delay_background_change = false; // Do not animate the background when: // - Going from a hidden / auto hidden shelf in fullscreen to a visible shelf // in maximized mode. // - Going from an auto hidden shelf in maximized mode to a visible shelf in // maximized mode. if (state.visibility_state == SHELF_VISIBLE && state.window_state == WORKSPACE_WINDOW_STATE_MAXIMIZED && old_state.visibility_state != SHELF_VISIBLE) { change_type = BACKGROUND_CHANGE_IMMEDIATE; } else { // Delay the animation when the shelf was hidden, and has just been made // visible (e.g. using a gesture-drag). if (state.visibility_state == SHELF_VISIBLE && old_state.visibility_state == SHELF_AUTO_HIDE && old_state.auto_hide_state == SHELF_AUTO_HIDE_HIDDEN) { delay_background_change = true; } } if (delay_background_change) { if (update_shelf_observer_) update_shelf_observer_->Detach(); // UpdateShelfBackground deletes itself when the animation is done. update_shelf_observer_ = new UpdateShelfObserver(this); } else { UpdateShelfBackground(change_type); } shelf_->SetDimsShelf( state.visibility_state == SHELF_VISIBLE && state.window_state == WORKSPACE_WINDOW_STATE_MAXIMIZED); TargetBounds target_bounds; CalculateTargetBounds(state_, &target_bounds); UpdateBoundsAndOpacity(target_bounds, true, delay_background_change ? update_shelf_observer_ : NULL); // OnAutoHideStateChanged Should be emitted when: // - firstly state changed to auto-hide from other state // - or, auto_hide_state has changed if ((old_state.visibility_state != state_.visibility_state && state_.visibility_state == SHELF_AUTO_HIDE) || old_state.auto_hide_state != state_.auto_hide_state) { FOR_EACH_OBSERVER(ShelfLayoutManagerObserver, observers_, OnAutoHideStateChanged(state_.auto_hide_state)); } } void ShelfLayoutManager::UpdateBoundsAndOpacity( const TargetBounds& target_bounds, bool animate, ui::ImplicitAnimationObserver* observer) { base::AutoReset auto_reset_updating_bounds(&updating_bounds_, true); { ui::ScopedLayerAnimationSettings shelf_animation_setter( GetLayer(shelf_)->GetAnimator()); ui::ScopedLayerAnimationSettings status_animation_setter( GetLayer(shelf_->status_area_widget())->GetAnimator()); if (animate) { int duration = duration_override_in_ms_ ? duration_override_in_ms_ : kCrossFadeDurationMS; shelf_animation_setter.SetTransitionDuration( base::TimeDelta::FromMilliseconds(duration)); shelf_animation_setter.SetTweenType(gfx::Tween::EASE_OUT); shelf_animation_setter.SetPreemptionStrategy( ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); status_animation_setter.SetTransitionDuration( base::TimeDelta::FromMilliseconds(duration)); status_animation_setter.SetTweenType(gfx::Tween::EASE_OUT); status_animation_setter.SetPreemptionStrategy( ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); } else { StopAnimating(); shelf_animation_setter.SetTransitionDuration(base::TimeDelta()); status_animation_setter.SetTransitionDuration(base::TimeDelta()); } if (observer) status_animation_setter.AddObserver(observer); GetLayer(shelf_)->SetOpacity(target_bounds.opacity); shelf_->SetBounds(ScreenUtil::ConvertRectToScreen( shelf_->GetNativeView()->parent(), target_bounds.shelf_bounds_in_root)); GetLayer(shelf_->status_area_widget())->SetOpacity( target_bounds.status_opacity); // Having a window which is visible but does not have an opacity is an // illegal state. We therefore hide the shelf here if required. if (!target_bounds.status_opacity) shelf_->status_area_widget()->Hide(); // Setting visibility during an animation causes the visibility property to // animate. Override the animation settings to immediately set the // visibility property. Opacity will still animate. // TODO(harrym): Once status area widget is a child view of shelf // this can be simplified. gfx::Rect status_bounds = target_bounds.status_bounds_in_shelf; status_bounds.set_x(status_bounds.x() + target_bounds.shelf_bounds_in_root.x()); status_bounds.set_y(status_bounds.y() + target_bounds.shelf_bounds_in_root.y()); shelf_->status_area_widget()->SetBounds( ScreenUtil::ConvertRectToScreen( shelf_->status_area_widget()->GetNativeView()->parent(), status_bounds)); SessionStateDelegate* session_state_delegate = Shell::GetInstance()->session_state_delegate(); if (!state_.is_screen_locked) { gfx::Insets insets; // If user session is blocked (login to new user session or add user to // the existing session - multi-profile) then give 100% of work area only // if keyboard is not shown. if (!session_state_delegate->IsUserSessionBlocked() || !keyboard_bounds_.IsEmpty()) { insets = target_bounds.work_area_insets; } Shell::GetInstance()->SetDisplayWorkAreaInsets(root_window_, insets); } } // Setting visibility during an animation causes the visibility property to // animate. Set the visibility property without an animation. if (target_bounds.status_opacity) shelf_->status_area_widget()->Show(); } void ShelfLayoutManager::StopAnimating() { GetLayer(shelf_)->GetAnimator()->StopAnimating(); GetLayer(shelf_->status_area_widget())->GetAnimator()->StopAnimating(); } void ShelfLayoutManager::GetShelfSize(int* width, int* height) { *width = *height = 0; gfx::Size status_size( shelf_->status_area_widget()->GetWindowBoundsInScreen().size()); if (IsHorizontalAlignment()) *height = kShelfSize; else *width = kShelfSize; } void ShelfLayoutManager::AdjustBoundsBasedOnAlignment(int inset, gfx::Rect* bounds) const { bounds->Inset(SelectValueForShelfAlignment( gfx::Insets(0, 0, inset, 0), gfx::Insets(0, inset, 0, 0), gfx::Insets(0, 0, 0, inset), gfx::Insets(inset, 0, 0, 0))); } void ShelfLayoutManager::CalculateTargetBounds( const State& state, TargetBounds* target_bounds) { const gfx::Rect available_bounds(root_window_->bounds()); gfx::Rect status_size( shelf_->status_area_widget()->GetWindowBoundsInScreen().size()); int shelf_width = 0, shelf_height = 0; GetShelfSize(&shelf_width, &shelf_height); if (IsHorizontalAlignment()) shelf_width = available_bounds.width(); else shelf_height = available_bounds.height(); if (state.visibility_state == SHELF_AUTO_HIDE && state.auto_hide_state == SHELF_AUTO_HIDE_HIDDEN) { // Auto-hidden shelf always starts with the default size. If a gesture-drag // is in progress, then the call to UpdateTargetBoundsForGesture() below // takes care of setting the height properly. if (IsHorizontalAlignment()) shelf_height = kAutoHideSize; else shelf_width = kAutoHideSize; } else if (state.visibility_state == SHELF_HIDDEN || (!keyboard_bounds_.IsEmpty() && !keyboard::IsKeyboardOverscrollEnabled())) { if (IsHorizontalAlignment()) shelf_height = 0; else shelf_width = 0; } int bottom_shelf_vertical_offset = available_bounds.bottom(); if (keyboard_bounds_.IsEmpty()) bottom_shelf_vertical_offset -= shelf_height; else bottom_shelf_vertical_offset -= keyboard_bounds_.height(); target_bounds->shelf_bounds_in_root = SelectValueForShelfAlignment( gfx::Rect(available_bounds.x(), bottom_shelf_vertical_offset, available_bounds.width(), shelf_height), gfx::Rect(available_bounds.x(), available_bounds.y(), shelf_width, available_bounds.height()), gfx::Rect(available_bounds.right() - shelf_width, available_bounds.y(), shelf_width, available_bounds.height()), gfx::Rect(available_bounds.x(), available_bounds.y(), available_bounds.width(), shelf_height)); if (IsHorizontalAlignment()) status_size.set_height(kShelfSize); else status_size.set_width(kShelfSize); target_bounds->status_bounds_in_shelf = SelectValueForShelfAlignment( gfx::Rect(base::i18n::IsRTL() ? 0 : shelf_width - status_size.width(), 0, status_size.width(), status_size.height()), gfx::Rect(shelf_width - status_size.width(), shelf_height - status_size.height(), status_size.width(), status_size.height()), gfx::Rect(0, shelf_height - status_size.height(), status_size.width(), status_size.height()), gfx::Rect(base::i18n::IsRTL() ? 0 : shelf_width - status_size.width(), shelf_height - status_size.height(), status_size.width(), status_size.height())); target_bounds->work_area_insets = SelectValueForShelfAlignment( gfx::Insets(0, 0, GetWorkAreaSize(state, shelf_height), 0), gfx::Insets(0, GetWorkAreaSize(state, shelf_width), 0, 0), gfx::Insets(0, 0, 0, GetWorkAreaSize(state, shelf_width)), gfx::Insets(GetWorkAreaSize(state, shelf_height), 0, 0, 0)); // TODO(varkha): The functionality of managing insets for display areas // should probably be pushed to a separate component. This would simplify or // remove entirely the dependency on keyboard and dock. if (!keyboard_bounds_.IsEmpty() && !keyboard::IsKeyboardOverscrollEnabled()) { // Also push in the work area inset for the keyboard if it is visible. gfx::Insets keyboard_insets(0, 0, keyboard_bounds_.height(), 0); target_bounds->work_area_insets += keyboard_insets; } // Also push in the work area inset for the dock if it is visible. if (!dock_bounds_.IsEmpty()) { gfx::Insets dock_insets( 0, (dock_bounds_.x() > 0 ? 0 : dock_bounds_.width()), 0, (dock_bounds_.x() > 0 ? dock_bounds_.width() : 0)); target_bounds->work_area_insets += dock_insets; } target_bounds->opacity = (gesture_drag_status_ == GESTURE_DRAG_IN_PROGRESS || state.visibility_state == SHELF_VISIBLE || state.visibility_state == SHELF_AUTO_HIDE) ? 1.0f : 0.0f; target_bounds->status_opacity = (state.visibility_state == SHELF_AUTO_HIDE && state.auto_hide_state == SHELF_AUTO_HIDE_HIDDEN && gesture_drag_status_ != GESTURE_DRAG_IN_PROGRESS) ? 0.0f : target_bounds->opacity; if (gesture_drag_status_ == GESTURE_DRAG_IN_PROGRESS) UpdateTargetBoundsForGesture(target_bounds); // This needs to happen after calling UpdateTargetBoundsForGesture(), because // that can change the size of the shelf. target_bounds->shelf_bounds_in_shelf = SelectValueForShelfAlignment( gfx::Rect(0, 0, shelf_width - status_size.width(), target_bounds->shelf_bounds_in_root.height()), gfx::Rect(0, 0, target_bounds->shelf_bounds_in_root.width(), shelf_height - status_size.height()), gfx::Rect(0, 0, target_bounds->shelf_bounds_in_root.width(), shelf_height - status_size.height()), gfx::Rect(0, 0, shelf_width - status_size.width(), target_bounds->shelf_bounds_in_root.height())); } void ShelfLayoutManager::UpdateTargetBoundsForGesture( TargetBounds* target_bounds) const { CHECK_EQ(GESTURE_DRAG_IN_PROGRESS, gesture_drag_status_); bool horizontal = IsHorizontalAlignment(); const gfx::Rect& available_bounds(root_window_->bounds()); int resistance_free_region = 0; if (gesture_drag_auto_hide_state_ == SHELF_AUTO_HIDE_HIDDEN && visibility_state() == SHELF_AUTO_HIDE && auto_hide_state() != SHELF_AUTO_HIDE_SHOWN) { // If the shelf was hidden when the drag started (and the state hasn't // changed since then, e.g. because the tray-menu was shown because of the // drag), then allow the drag some resistance-free region at first to make // sure the shelf sticks with the finger until the shelf is visible. resistance_free_region = kShelfSize - kAutoHideSize; } bool resist = SelectValueForShelfAlignment( gesture_drag_amount_ < -resistance_free_region, gesture_drag_amount_ > resistance_free_region, gesture_drag_amount_ < -resistance_free_region, gesture_drag_amount_ > resistance_free_region); float translate = 0.f; if (resist) { float diff = fabsf(gesture_drag_amount_) - resistance_free_region; diff = std::min(diff, sqrtf(diff)); if (gesture_drag_amount_ < 0) translate = -resistance_free_region - diff; else translate = resistance_free_region + diff; } else { translate = gesture_drag_amount_; } if (horizontal) { // Move and size the shelf with the gesture. int shelf_height = target_bounds->shelf_bounds_in_root.height() - translate; shelf_height = std::max(shelf_height, kAutoHideSize); target_bounds->shelf_bounds_in_root.set_height(shelf_height); if (GetAlignment() == SHELF_ALIGNMENT_BOTTOM) { target_bounds->shelf_bounds_in_root.set_y( available_bounds.bottom() - shelf_height); } target_bounds->status_bounds_in_shelf.set_y(0); } else { // Move and size the shelf with the gesture. int shelf_width = target_bounds->shelf_bounds_in_root.width(); bool right_aligned = GetAlignment() == SHELF_ALIGNMENT_RIGHT; if (right_aligned) shelf_width -= translate; else shelf_width += translate; shelf_width = std::max(shelf_width, kAutoHideSize); target_bounds->shelf_bounds_in_root.set_width(shelf_width); if (right_aligned) { target_bounds->shelf_bounds_in_root.set_x( available_bounds.right() - shelf_width); } if (right_aligned) target_bounds->status_bounds_in_shelf.set_x(0); else target_bounds->status_bounds_in_shelf.set_x( target_bounds->shelf_bounds_in_root.width() - kShelfSize); } } void ShelfLayoutManager::UpdateShelfBackground( BackgroundAnimatorChangeType type) { const ShelfBackgroundType background_type(GetShelfBackgroundType()); shelf_->SetPaintsBackground(background_type, type); FOR_EACH_OBSERVER(ShelfLayoutManagerObserver, observers_, OnBackgroundUpdated(background_type, type)); } ShelfBackgroundType ShelfLayoutManager::GetShelfBackgroundType() const { if (state_.visibility_state != SHELF_AUTO_HIDE && state_.window_state == WORKSPACE_WINDOW_STATE_MAXIMIZED) { return SHELF_BACKGROUND_MAXIMIZED; } if (gesture_drag_status_ == GESTURE_DRAG_IN_PROGRESS || (!state_.is_screen_locked && window_overlaps_shelf_) || (state_.visibility_state == SHELF_AUTO_HIDE)) { return SHELF_BACKGROUND_OVERLAP; } return SHELF_BACKGROUND_DEFAULT; } void ShelfLayoutManager::UpdateAutoHideStateNow() { SetState(state_.visibility_state); // If the state did not change, the auto hide timer may still be running. StopAutoHideTimer(); } void ShelfLayoutManager::StopAutoHideTimer() { auto_hide_timer_.Stop(); mouse_over_shelf_when_auto_hide_timer_started_ = false; } gfx::Rect ShelfLayoutManager::GetAutoHideShowShelfRegionInScreen() const { gfx::Rect shelf_bounds_in_screen = shelf_->GetWindowBoundsInScreen(); gfx::Vector2d offset = SelectValueForShelfAlignment( gfx::Vector2d(0, shelf_bounds_in_screen.height()), gfx::Vector2d(-kMaxAutoHideShowShelfRegionSize, 0), gfx::Vector2d(shelf_bounds_in_screen.width(), 0), gfx::Vector2d(0, -kMaxAutoHideShowShelfRegionSize)); gfx::Rect show_shelf_region_in_screen = shelf_bounds_in_screen; show_shelf_region_in_screen += offset; if (IsHorizontalAlignment()) show_shelf_region_in_screen.set_height(kMaxAutoHideShowShelfRegionSize); else show_shelf_region_in_screen.set_width(kMaxAutoHideShowShelfRegionSize); // TODO: Figure out if we need any special handling when the keyboard is // visible. return show_shelf_region_in_screen; } ShelfAutoHideState ShelfLayoutManager::CalculateAutoHideState( ShelfVisibilityState visibility_state) const { if (visibility_state != SHELF_AUTO_HIDE || !shelf_) return SHELF_AUTO_HIDE_HIDDEN; Shell* shell = Shell::GetInstance(); if (shell->GetAppListTargetVisibility()) return SHELF_AUTO_HIDE_SHOWN; if (shelf_->status_area_widget() && shelf_->status_area_widget()->ShouldShowShelf()) return SHELF_AUTO_HIDE_SHOWN; if (shelf_->shelf() && shelf_->shelf()->IsShowingMenu()) return SHELF_AUTO_HIDE_SHOWN; if (shelf_->shelf() && shelf_->shelf()->IsShowingOverflowBubble()) return SHELF_AUTO_HIDE_SHOWN; if (shelf_->IsActive() || (shelf_->status_area_widget() && shelf_->status_area_widget()->IsActive())) return SHELF_AUTO_HIDE_SHOWN; const std::vector windows = ash::MruWindowTracker::BuildWindowList(false); // Process the window list and check if there are any visible windows. bool visible_window = false; for (size_t i = 0; i < windows.size(); ++i) { if (windows[i] && windows[i]->IsVisible() && !wm::GetWindowState(windows[i])->IsMinimized() && root_window_ == windows[i]->GetRootWindow()) { visible_window = true; break; } } // If there are no visible windows do not hide the shelf. if (!visible_window) return SHELF_AUTO_HIDE_SHOWN; if (gesture_drag_status_ == GESTURE_DRAG_COMPLETE_IN_PROGRESS) return gesture_drag_auto_hide_state_; // Don't show if the user is dragging the mouse. if (auto_hide_event_filter_.get() && auto_hide_event_filter_->in_mouse_drag()) return SHELF_AUTO_HIDE_HIDDEN; // Ignore the mouse position if mouse events are disabled. aura::client::CursorClient* cursor_client = aura::client::GetCursorClient( shelf_->GetNativeWindow()->GetRootWindow()); if (!cursor_client->IsMouseEventsEnabled()) return SHELF_AUTO_HIDE_HIDDEN; gfx::Rect shelf_region = shelf_->GetWindowBoundsInScreen(); if (shelf_->status_area_widget() && shelf_->status_area_widget()->IsMessageBubbleShown() && IsVisible()) { // Increase the the hit test area to prevent the shelf from disappearing // when the mouse is over the bubble gap. ShelfAlignment alignment = GetAlignment(); shelf_region.Inset(alignment == SHELF_ALIGNMENT_RIGHT ? -kNotificationBubbleGapHeight : 0, alignment == SHELF_ALIGNMENT_BOTTOM ? -kNotificationBubbleGapHeight : 0, alignment == SHELF_ALIGNMENT_LEFT ? -kNotificationBubbleGapHeight : 0, alignment == SHELF_ALIGNMENT_TOP ? -kNotificationBubbleGapHeight : 0); } gfx::Point cursor_position_in_screen = Shell::GetScreen()->GetCursorScreenPoint(); if (shelf_region.Contains(cursor_position_in_screen)) return SHELF_AUTO_HIDE_SHOWN; // When the shelf is auto hidden and the shelf is on the boundary between two // displays, it is hard to trigger showing the shelf. For instance, if a // user's primary display is left of their secondary display, it is hard to // unautohide a left aligned shelf on the secondary display. // It is hard because: // - It is hard to stop the cursor in the shelf "light bar" and not overshoot. // - The cursor is warped to the other display if the cursor gets to the edge // of the display. // Show the shelf if the cursor started on the shelf and the user overshot the // shelf slightly to make it easier to show the shelf in this situation. We // do not check |auto_hide_timer_|.IsRunning() because it returns false when // the timer's task is running. if ((state_.auto_hide_state == SHELF_AUTO_HIDE_SHOWN || mouse_over_shelf_when_auto_hide_timer_started_) && GetAutoHideShowShelfRegionInScreen().Contains( cursor_position_in_screen)) { return SHELF_AUTO_HIDE_SHOWN; } return SHELF_AUTO_HIDE_HIDDEN; } bool ShelfLayoutManager::IsShelfWindow(aura::Window* window) { if (!window) return false; return (shelf_ && shelf_->GetNativeWindow()->Contains(window)) || (shelf_->status_area_widget() && shelf_->status_area_widget()->GetNativeWindow()->Contains(window)); } int ShelfLayoutManager::GetWorkAreaSize(const State& state, int size) const { if (state.visibility_state == SHELF_VISIBLE) return size; if (state.visibility_state == SHELF_AUTO_HIDE) return kAutoHideSize; return 0; } void ShelfLayoutManager::OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) { bool keyboard_is_about_to_hide = false; if (new_bounds.IsEmpty() && !keyboard_bounds_.IsEmpty()) keyboard_is_about_to_hide = true; keyboard_bounds_ = new_bounds; OnWindowResized(); SessionStateDelegate* session_state_delegate = Shell::GetInstance()->session_state_delegate(); // On login screen if keyboard has been just hidden, update bounds just once // but ignore target_bounds.work_area_insets since shelf overlaps with login // window. if (session_state_delegate->IsUserSessionBlocked() && keyboard_is_about_to_hide) { Shell::GetInstance()->SetDisplayWorkAreaInsets(root_window_, gfx::Insets()); } } void ShelfLayoutManager::OnDockBoundsChanging( const gfx::Rect& dock_bounds, DockedWindowLayoutManagerObserver::Reason reason) { // Skip shelf layout in case docked notification originates from this class. if (reason == DISPLAY_INSETS_CHANGED) return; if (dock_bounds_ != dock_bounds) { dock_bounds_ = dock_bounds; OnWindowResized(); UpdateVisibilityState(); UpdateShelfBackground(BACKGROUND_CHANGE_ANIMATE); } } void ShelfLayoutManager::OnLockStateEvent(LockStateObserver::EventType event) { if (event == EVENT_LOCK_ANIMATION_STARTED) { // Enter the screen locked state. state_.is_screen_locked = true; } } void ShelfLayoutManager::SessionStateChanged( SessionStateDelegate::SessionState state) { TargetBounds target_bounds; CalculateTargetBounds(state_, &target_bounds); UpdateBoundsAndOpacity(target_bounds, true, NULL); UpdateVisibilityState(); } } // namespace ash