| // 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 <algorithm> |
| #include <cmath> |
| #include <vector> |
| |
| #include "ash/animation/animation_change_type.h" |
| #include "ash/keyboard/keyboard_observer_register.h" |
| #include "ash/public/cpp/shell_window_ids.h" |
| #include "ash/root_window_controller.h" |
| #include "ash/session/session_controller.h" |
| #include "ash/shelf/shelf_constants.h" |
| #include "ash/shelf/shelf_layout_manager_observer.h" |
| #include "ash/shelf/shelf_widget.h" |
| #include "ash/shelf/wm_shelf.h" |
| #include "ash/shell.h" |
| #include "ash/shell_port.h" |
| #include "ash/system/status_area_widget.h" |
| #include "ash/wm/fullscreen_window_finder.h" |
| #include "ash/wm/mru_window_tracker.h" |
| #include "ash/wm/screen_pinning_controller.h" |
| #include "ash/wm/window_state.h" |
| #include "ash/wm/window_state_aura.h" |
| #include "ash/wm/wm_screen_util.h" |
| #include "ash/wm_window.h" |
| #include "base/auto_reset.h" |
| #include "base/command_line.h" |
| #include "base/i18n/rtl.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/display/display.h" |
| #include "ui/display/screen.h" |
| #include "ui/events/event.h" |
| #include "ui/events/event_handler.h" |
| #include "ui/keyboard/keyboard_controller.h" |
| #include "ui/keyboard/keyboard_util.h" |
| #include "ui/views/border.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; |
| |
| // Duration of the animation to show or hide the shelf. |
| const int kAnimationDurationMS = 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(); |
| } |
| |
| // Returns true if the window is in the app list window container. |
| bool IsAppListWindow(WmWindow* window) { |
| return window->GetParent() && window->GetParent()->aura_window()->id() == |
| kShellWindowId_AppListContainer; |
| } |
| |
| } // namespace |
| |
| // 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_ = nullptr; } |
| |
| void OnImplicitAnimationsCompleted() override { |
| if (shelf_) |
| shelf_->MaybeUpdateShelfBackground(AnimationChangeType::ANIMATE); |
| delete this; |
| } |
| |
| private: |
| ~UpdateShelfObserver() override { |
| if (shelf_) |
| shelf_->update_shelf_observer_ = nullptr; |
| } |
| |
| // Shelf we're in. nullptr if deleted before we're deleted. |
| ShelfLayoutManager* shelf_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UpdateShelfObserver); |
| }; |
| |
| ShelfLayoutManager::State::State() |
| : visibility_state(SHELF_VISIBLE), |
| auto_hide_state(SHELF_AUTO_HIDE_HIDDEN), |
| window_state(wm::WORKSPACE_WINDOW_STATE_DEFAULT), |
| pre_lock_screen_animation_active(false), |
| session_state(session_manager::SessionState::UNKNOWN) {} |
| |
| bool ShelfLayoutManager::State::IsAddingSecondaryUser() const { |
| return session_state == session_manager::SessionState::LOGIN_SECONDARY; |
| } |
| |
| bool ShelfLayoutManager::State::IsScreenLocked() const { |
| return session_state == session_manager::SessionState::LOCKED; |
| } |
| |
| bool ShelfLayoutManager::State::Equals(const State& other) const { |
| return other.visibility_state == visibility_state && |
| (visibility_state != SHELF_AUTO_HIDE || |
| other.auto_hide_state == auto_hide_state) && |
| other.window_state == window_state && |
| other.pre_lock_screen_animation_active == |
| pre_lock_screen_animation_active && |
| other.session_state == session_state; |
| } |
| |
| // ShelfLayoutManager ---------------------------------------------------------- |
| |
| ShelfLayoutManager::ShelfLayoutManager(ShelfWidget* shelf_widget, |
| WmShelf* wm_shelf) |
| : updating_bounds_(false), |
| shelf_widget_(shelf_widget), |
| wm_shelf_(wm_shelf), |
| window_overlaps_shelf_(false), |
| mouse_over_shelf_when_auto_hide_timer_started_(false), |
| gesture_drag_status_(GESTURE_DRAG_NONE), |
| gesture_drag_amount_(0.f), |
| gesture_drag_auto_hide_state_(SHELF_AUTO_HIDE_SHOWN), |
| update_shelf_observer_(nullptr), |
| chromevox_panel_height_(0), |
| duration_override_in_ms_(0), |
| shelf_background_type_(SHELF_BACKGROUND_OVERLAP), |
| keyboard_observer_(this) { |
| DCHECK(shelf_widget_); |
| DCHECK(wm_shelf_); |
| Shell::Get()->AddShellObserver(this); |
| ShellPort::Get()->AddLockStateObserver(this); |
| Shell::Get()->activation_client()->AddObserver(this); |
| Shell::Get()->session_controller()->AddSessionStateObserver(this); |
| state_.session_state = Shell::Get()->session_controller()->GetSessionState(); |
| } |
| |
| ShelfLayoutManager::~ShelfLayoutManager() { |
| if (update_shelf_observer_) |
| update_shelf_observer_->Detach(); |
| |
| for (auto& observer : observers_) |
| observer.WillDeleteShelfLayoutManager(); |
| Shell::Get()->RemoveShellObserver(this); |
| ShellPort::Get()->RemoveLockStateObserver(this); |
| Shell::Get()->session_controller()->RemoveSessionStateObserver(this); |
| } |
| |
| void ShelfLayoutManager::PrepareForShutdown() { |
| in_shutdown_ = true; |
| // Stop observing changes to avoid updating a partially destructed shelf. |
| Shell::Get()->activation_client()->RemoveObserver(this); |
| } |
| |
| bool ShelfLayoutManager::IsVisible() const { |
| // status_area_widget() may be nullptr during the shutdown. |
| return shelf_widget_->status_area_widget() && |
| shelf_widget_->status_area_widget()->IsVisible() && |
| (state_.visibility_state == SHELF_VISIBLE || |
| (state_.visibility_state == SHELF_AUTO_HIDE && |
| state_.auto_hide_state == SHELF_AUTO_HIDE_SHOWN)); |
| } |
| |
| gfx::Rect ShelfLayoutManager::GetIdealBounds() { |
| const int shelf_size = GetShelfConstant(SHELF_SIZE); |
| WmWindow* shelf_window = WmWindow::Get(shelf_widget_->GetNativeWindow()); |
| gfx::Rect rect(wm::GetDisplayBoundsInParent(shelf_window)); |
| return SelectValueForShelfAlignment( |
| gfx::Rect(rect.x(), rect.bottom() - shelf_size, rect.width(), shelf_size), |
| gfx::Rect(rect.x(), rect.y(), shelf_size, rect.height()), |
| gfx::Rect(rect.right() - shelf_size, rect.y(), shelf_size, |
| rect.height())); |
| } |
| |
| gfx::Size ShelfLayoutManager::GetPreferredSize() { |
| TargetBounds target_bounds; |
| CalculateTargetBounds(state_, &target_bounds); |
| return target_bounds.shelf_bounds_in_root.size(); |
| } |
| |
| void ShelfLayoutManager::LayoutShelfAndUpdateBounds(bool change_work_area) { |
| TargetBounds target_bounds; |
| CalculateTargetBounds(state_, &target_bounds); |
| UpdateBoundsAndOpacity(target_bounds, false, change_work_area, nullptr); |
| |
| // Update insets in ShelfWindowTargeter when shelf bounds change. |
| for (auto& observer : observers_) |
| observer.WillChangeVisibilityState(visibility_state()); |
| } |
| |
| void ShelfLayoutManager::LayoutShelf() { |
| LayoutShelfAndUpdateBounds(true); |
| } |
| |
| ShelfVisibilityState ShelfLayoutManager::CalculateShelfVisibility() { |
| switch (wm_shelf_->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 before the shelf is initialized or after it is destroyed. |
| WmWindow* shelf_window = WmWindow::Get(shelf_widget_->GetNativeWindow()); |
| if (in_shutdown_ || !wm_shelf_->IsShelfInitialized() || !shelf_window) |
| return; |
| if (state_.IsScreenLocked() || state_.IsAddingSecondaryUser()) { |
| SetState(SHELF_VISIBLE); |
| } else if (Shell::Get()->screen_pinning_controller()->IsPinned()) { |
| SetState(SHELF_HIDDEN); |
| } else { |
| // TODO(zelidrag): Verify shelf drag animation still shows on the device |
| // when we are in SHELF_AUTO_HIDE_ALWAYS_HIDDEN. |
| wm::WorkspaceWindowState window_state( |
| shelf_window->GetRootWindowController()->GetWorkspaceWindowState()); |
| |
| switch (window_state) { |
| case wm::WORKSPACE_WINDOW_STATE_FULL_SCREEN: { |
| if (IsShelfAutoHideForFullscreenMaximized()) { |
| SetState(SHELF_AUTO_HIDE); |
| } else if (IsShelfHiddenForFullscreen()) { |
| 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 wm::WORKSPACE_WINDOW_STATE_MAXIMIZED: |
| if (IsShelfAutoHideForFullscreenMaximized()) { |
| SetState(SHELF_AUTO_HIDE); |
| } else { |
| SetState(CalculateShelfVisibility()); |
| } |
| break; |
| |
| case wm::WORKSPACE_WINDOW_STATE_WINDOW_OVERLAPS_SHELF: |
| case wm::WORKSPACE_WINDOW_STATE_DEFAULT: |
| SetState(CalculateShelfVisibility()); |
| SetWindowOverlapsShelf( |
| window_state == wm::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_widget_->GetWindowBoundsInScreen().Contains( |
| display::Screen::GetScreen()->GetCursorScreenPoint()); |
| } |
| auto_hide_timer_.Start( |
| FROM_HERE, base::TimeDelta::FromMilliseconds(kAutoHideDelayMS), this, |
| &ShelfLayoutManager::UpdateAutoHideStateNow); |
| } |
| } else { |
| StopAutoHideTimer(); |
| } |
| } |
| |
| void ShelfLayoutManager::UpdateAutoHideForMouseEvent(ui::MouseEvent* event, |
| WmWindow* target) { |
| // 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)) && |
| !IsShelfWindow(target); |
| |
| // Don't update during shutdown because synthetic mouse events (e.g. mouse |
| // exit) may be generated during status area widget teardown. |
| if (visibility_state() != SHELF_AUTO_HIDE || in_shutdown_) |
| return; |
| |
| if (event->type() == ui::ET_MOUSE_MOVED || |
| event->type() == ui::ET_MOUSE_ENTERED || |
| event->type() == ui::ET_MOUSE_EXITED) { |
| UpdateAutoHideState(); |
| } |
| } |
| |
| void ShelfLayoutManager::UpdateAutoHideForGestureEvent(ui::GestureEvent* event, |
| WmWindow* target) { |
| if (visibility_state() != SHELF_AUTO_HIDE || in_shutdown_) |
| return; |
| |
| if (IsShelfWindow(target) && ProcessGestureEvent(*event)) |
| event->StopPropagation(); |
| } |
| |
| void ShelfLayoutManager::SetWindowOverlapsShelf(bool value) { |
| window_overlaps_shelf_ = value; |
| MaybeUpdateShelfBackground(AnimationChangeType::ANIMATE); |
| } |
| |
| void ShelfLayoutManager::AddObserver(ShelfLayoutManagerObserver* observer) { |
| observers_.AddObserver(observer); |
| } |
| |
| void ShelfLayoutManager::RemoveObserver(ShelfLayoutManagerObserver* observer) { |
| observers_.RemoveObserver(observer); |
| } |
| |
| bool ShelfLayoutManager::ProcessGestureEvent(const ui::GestureEvent& event) { |
| // The gestures are disabled in the lock/login screen. |
| SessionController* controller = Shell::Get()->session_controller(); |
| if (!controller->NumberOfLoggedInUsers() || controller->IsScreenLocked()) |
| return false; |
| |
| if (IsShelfHiddenForFullscreen()) |
| return false; |
| |
| if (event.type() == ui::ET_GESTURE_SCROLL_BEGIN) { |
| StartGestureDrag(event); |
| return true; |
| } |
| |
| if (gesture_drag_status_ != GESTURE_DRAG_IN_PROGRESS) |
| return false; |
| |
| if (event.type() == ui::ET_GESTURE_SCROLL_UPDATE) { |
| UpdateGestureDrag(event); |
| return true; |
| } |
| |
| if (event.type() == ui::ET_GESTURE_SCROLL_END || |
| event.type() == ui::ET_SCROLL_FLING_START) { |
| CompleteGestureDrag(event); |
| return true; |
| } |
| |
| // Unexpected event. Reset the state and let the event fall through. |
| CancelGestureDrag(); |
| return false; |
| } |
| |
| void ShelfLayoutManager::SetAnimationDurationOverride( |
| int duration_override_in_ms) { |
| duration_override_in_ms_ = duration_override_in_ms; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // ShelfLayoutManager, wm::WmSnapToPixelLayoutManager implementation: |
| |
| void ShelfLayoutManager::OnWindowResized() { |
| LayoutShelf(); |
| } |
| |
| void ShelfLayoutManager::SetChildBounds(WmWindow* child, |
| const gfx::Rect& requested_bounds) { |
| wm::WmSnapToPixelLayoutManager::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_ && |
| ((WmWindow::Get(shelf_widget_->GetNativeWindow()) == child) || |
| (WmWindow::Get(shelf_widget_->status_area_widget()->GetNativeWindow()) == |
| child))) { |
| LayoutShelf(); |
| } |
| } |
| |
| void ShelfLayoutManager::OnShelfAutoHideBehaviorChanged(WmWindow* root_window) { |
| UpdateVisibilityState(); |
| } |
| |
| void ShelfLayoutManager::OnPinnedStateChanged(WmWindow* pinned_window) { |
| // Shelf needs to be hidden on entering to pinned mode, or restored |
| // on exiting from pinned mode. |
| UpdateVisibilityState(); |
| } |
| |
| void ShelfLayoutManager::OnVirtualKeyboardStateChanged(bool activated, |
| WmWindow* root_window) { |
| UpdateKeyboardObserverFromStateChanged( |
| activated, root_window, |
| WmWindow::Get(shelf_widget_->GetNativeWindow())->GetRootWindow(), |
| &keyboard_observer_); |
| } |
| |
| void ShelfLayoutManager::OnWindowActivated(ActivationReason reason, |
| aura::Window* gained_active, |
| aura::Window* lost_active) { |
| UpdateAutoHideStateNow(); |
| } |
| |
| 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; |
| // If new window behavior flag enabled and in non-sticky mode, do not change |
| // the work area. |
| bool change_work_area = |
| (!base::CommandLine::ForCurrentProcess()->HasSwitch( |
| ::switches::kUseNewVirtualKeyboardBehavior) || |
| keyboard::KeyboardController::GetInstance()->keyboard_locked()); |
| |
| keyboard_bounds_ = new_bounds; |
| LayoutShelfAndUpdateBounds(change_work_area); |
| |
| // 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 (Shell::Get()->session_controller()->IsUserSessionBlocked() && |
| keyboard_is_about_to_hide) { |
| WmWindow* window = WmWindow::Get(shelf_widget_->GetNativeWindow()); |
| ShellPort::Get()->SetDisplayWorkAreaInsets(window, gfx::Insets()); |
| } |
| } |
| |
| void ShelfLayoutManager::OnKeyboardClosed() { |
| keyboard_observer_.RemoveAll(); |
| } |
| |
| ShelfBackgroundType ShelfLayoutManager::GetShelfBackgroundType() const { |
| if (state_.pre_lock_screen_animation_active) |
| return SHELF_BACKGROUND_DEFAULT; |
| |
| // Handle all non active screen states, including OOBE and pre-login. |
| if (state_.session_state != session_manager::SessionState::ACTIVE) |
| return SHELF_BACKGROUND_OVERLAP; |
| |
| if (state_.visibility_state != SHELF_AUTO_HIDE && |
| state_.window_state == wm::WORKSPACE_WINDOW_STATE_MAXIMIZED) { |
| return SHELF_BACKGROUND_MAXIMIZED; |
| } |
| |
| if (gesture_drag_status_ == GESTURE_DRAG_IN_PROGRESS || |
| window_overlaps_shelf_ || state_.visibility_state == SHELF_AUTO_HIDE) { |
| return SHELF_BACKGROUND_OVERLAP; |
| } |
| |
| return SHELF_BACKGROUND_DEFAULT; |
| } |
| |
| void ShelfLayoutManager::SetChromeVoxPanelHeight(int height) { |
| chromevox_panel_height_ = height; |
| LayoutShelf(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // ShelfLayoutManager, private: |
| |
| ShelfLayoutManager::TargetBounds::TargetBounds() |
| : opacity(0.0f), status_opacity(0.0f) {} |
| |
| ShelfLayoutManager::TargetBounds::~TargetBounds() {} |
| |
| void ShelfLayoutManager::SetState(ShelfVisibilityState visibility_state) { |
| State state; |
| state.visibility_state = visibility_state; |
| state.auto_hide_state = CalculateAutoHideState(visibility_state); |
| |
| WmWindow* shelf_window = WmWindow::Get(shelf_widget_->GetNativeWindow()); |
| RootWindowController* controller = shelf_window->GetRootWindowController(); |
| state.window_state = controller ? controller->GetWorkspaceWindowState() |
| : wm::WORKSPACE_WINDOW_STATE_DEFAULT; |
| // Preserve the log in screen states. |
| state.session_state = state_.session_state; |
| state.pre_lock_screen_animation_active = |
| state_.pre_lock_screen_animation_active; |
| |
| // 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 (auto& observer : observers_) |
| observer.WillChangeVisibilityState(visibility_state); |
| |
| StopAutoHideTimer(); |
| |
| State old_state = state_; |
| state_ = state; |
| |
| AnimationChangeType change_type = AnimationChangeType::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 == wm::WORKSPACE_WINDOW_STATE_MAXIMIZED && |
| old_state.visibility_state != SHELF_VISIBLE) { |
| change_type = AnimationChangeType::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(); |
| // |update_shelf_observer_| deletes itself when the animation is done. |
| update_shelf_observer_ = new UpdateShelfObserver(this); |
| } else { |
| MaybeUpdateShelfBackground(change_type); |
| } |
| |
| TargetBounds target_bounds; |
| CalculateTargetBounds(state_, &target_bounds); |
| UpdateBoundsAndOpacity( |
| target_bounds, true /* animate */, true /* change_work_area */, |
| delay_background_change ? update_shelf_observer_ : nullptr); |
| |
| // 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 (auto& observer : observers_) |
| observer.OnAutoHideStateChanged(state_.auto_hide_state); |
| } |
| } |
| |
| void ShelfLayoutManager::UpdateBoundsAndOpacity( |
| const TargetBounds& target_bounds, |
| bool animate, |
| bool change_work_area, |
| ui::ImplicitAnimationObserver* observer) { |
| base::AutoReset<bool> auto_reset_updating_bounds(&updating_bounds_, true); |
| { |
| ui::ScopedLayerAnimationSettings shelf_animation_setter( |
| GetLayer(shelf_widget_)->GetAnimator()); |
| ui::ScopedLayerAnimationSettings status_animation_setter( |
| GetLayer(shelf_widget_->status_area_widget())->GetAnimator()); |
| if (animate) { |
| int duration = duration_override_in_ms_ ? duration_override_in_ms_ |
| : kAnimationDurationMS; |
| 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_widget_)->SetOpacity(target_bounds.opacity); |
| WmWindow* shelf_window = WmWindow::Get(shelf_widget_->GetNativeWindow()); |
| shelf_widget_->SetBounds(shelf_window->GetParent()->ConvertRectToScreen( |
| target_bounds.shelf_bounds_in_root)); |
| |
| GetLayer(shelf_widget_->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_widget_->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.Offset(target_bounds.shelf_bounds_in_root.OffsetFromOrigin()); |
| WmWindow* status_window = |
| WmWindow::Get(shelf_widget_->status_area_widget()->GetNativeWindow()); |
| shelf_widget_->status_area_widget()->SetBounds( |
| status_window->GetParent()->ConvertRectToScreen(status_bounds)); |
| |
| // For crbug.com/622431, when the shelf alignment is BOTTOM_LOCKED, we |
| // don't set display work area, as it is not real user-set alignment. |
| if (!state_.IsScreenLocked() && |
| wm_shelf_->GetAlignment() != SHELF_ALIGNMENT_BOTTOM_LOCKED && |
| change_work_area) { |
| 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 (!state_.IsAddingSecondaryUser() || !keyboard_bounds_.IsEmpty()) |
| insets = target_bounds.work_area_insets; |
| ShellPort::Get()->SetDisplayWorkAreaInsets(shelf_window, insets); |
| } |
| } |
| |
| // Set an empty border to avoid the shelf view and status area overlapping. |
| // TODO(msw): Avoid setting bounds of views within the shelf widget here. |
| gfx::Rect shelf_bounds = gfx::Rect(target_bounds.shelf_bounds_in_root.size()); |
| shelf_widget_->GetContentsView()->SetBorder(views::CreateEmptyBorder( |
| shelf_bounds.InsetsFrom(target_bounds.shelf_bounds_in_shelf))); |
| shelf_widget_->GetContentsView()->Layout(); |
| |
| // Setting visibility during an animation causes the visibility property to |
| // animate. Set the visibility property without an animation. |
| if (target_bounds.status_opacity) |
| shelf_widget_->status_area_widget()->Show(); |
| } |
| |
| void ShelfLayoutManager::StopAnimating() { |
| GetLayer(shelf_widget_)->GetAnimator()->StopAnimating(); |
| GetLayer(shelf_widget_->status_area_widget())->GetAnimator()->StopAnimating(); |
| } |
| |
| void ShelfLayoutManager::CalculateTargetBounds(const State& state, |
| TargetBounds* target_bounds) { |
| int shelf_size = GetShelfConstant(SHELF_SIZE); |
| 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. |
| shelf_size = kShelfAutoHideSize; |
| } else if (state.visibility_state == SHELF_HIDDEN || |
| (!keyboard_bounds_.IsEmpty() && |
| !keyboard::IsKeyboardOverscrollEnabled())) { |
| shelf_size = 0; |
| } |
| |
| WmWindow* shelf_window = WmWindow::Get(shelf_widget_->GetNativeWindow()); |
| gfx::Rect available_bounds = wm::GetDisplayBoundsWithShelf(shelf_window); |
| available_bounds.Inset(0, chromevox_panel_height_, 0, 0); |
| int shelf_width = PrimaryAxisValue(available_bounds.width(), shelf_size); |
| int shelf_height = PrimaryAxisValue(shelf_size, available_bounds.height()); |
| 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(); |
| |
| gfx::Point shelf_origin = SelectValueForShelfAlignment( |
| gfx::Point(available_bounds.x(), bottom_shelf_vertical_offset), |
| gfx::Point(available_bounds.x(), available_bounds.y()), |
| gfx::Point(available_bounds.right() - shelf_width, available_bounds.y())); |
| target_bounds->shelf_bounds_in_root = |
| gfx::Rect(shelf_origin.x(), shelf_origin.y(), shelf_width, shelf_height); |
| |
| gfx::Size status_size( |
| shelf_widget_->status_area_widget()->GetWindowBoundsInScreen().size()); |
| if (wm_shelf_->IsHorizontalAlignment()) |
| status_size.set_height(GetShelfConstant(SHELF_SIZE)); |
| else |
| status_size.set_width(GetShelfConstant(SHELF_SIZE)); |
| |
| gfx::Point status_origin = SelectValueForShelfAlignment( |
| gfx::Point(0, 0), gfx::Point(shelf_width - status_size.width(), |
| shelf_height - status_size.height()), |
| gfx::Point(0, shelf_height - status_size.height())); |
| if (wm_shelf_->IsHorizontalAlignment() && !base::i18n::IsRTL()) |
| status_origin.set_x(shelf_width - status_size.width()); |
| target_bounds->status_bounds_in_shelf = gfx::Rect(status_origin, status_size); |
| |
| target_bounds->work_area_insets = SelectValueForShelfAlignment( |
| gfx::Insets(0, 0, GetWorkAreaInsets(state, shelf_height), 0), |
| gfx::Insets(0, GetWorkAreaInsets(state, shelf_width), 0, 0), |
| gfx::Insets(0, 0, 0, GetWorkAreaInsets(state, shelf_width))); |
| |
| // 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 insets for the ChromeVox panel if it's visible. |
| if (chromevox_panel_height_) { |
| gfx::Insets chromevox_insets(chromevox_panel_height_, 0, 0, 0); |
| target_bounds->work_area_insets += chromevox_insets; |
| } |
| |
| target_bounds->opacity = ComputeTargetOpacity(state); |
| 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())); |
| |
| available_bounds.Subtract(target_bounds->shelf_bounds_in_root); |
| available_bounds.Subtract(keyboard_bounds_); |
| |
| WmWindow* root = shelf_window->GetRootWindow(); |
| user_work_area_bounds_ = root->ConvertRectToScreen(available_bounds); |
| } |
| |
| void ShelfLayoutManager::UpdateTargetBoundsForGesture( |
| TargetBounds* target_bounds) const { |
| CHECK_EQ(GESTURE_DRAG_IN_PROGRESS, gesture_drag_status_); |
| bool horizontal = wm_shelf_->IsHorizontalAlignment(); |
| WmWindow* window = WmWindow::Get(shelf_widget_->GetNativeWindow()); |
| gfx::Rect available_bounds = wm::GetDisplayBoundsWithShelf(window); |
| 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 = GetShelfConstant(SHELF_SIZE) - kShelfAutoHideSize; |
| } |
| |
| bool resist = SelectValueForShelfAlignment( |
| 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_; |
| } |
| int shelf_insets = GetShelfConstant(SHELF_INSETS_FOR_AUTO_HIDE); |
| 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, shelf_insets); |
| target_bounds->shelf_bounds_in_root.set_height(shelf_height); |
| if (wm_shelf_->IsHorizontalAlignment()) { |
| 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 = wm_shelf_->GetAlignment() == SHELF_ALIGNMENT_RIGHT; |
| if (right_aligned) |
| shelf_width -= translate; |
| else |
| shelf_width += translate; |
| shelf_width = std::max(shelf_width, shelf_insets); |
| 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() - |
| GetShelfConstant(SHELF_SIZE)); |
| } |
| } |
| } |
| |
| void ShelfLayoutManager::MaybeUpdateShelfBackground(AnimationChangeType type) { |
| const ShelfBackgroundType new_background_type(GetShelfBackgroundType()); |
| |
| if (new_background_type == shelf_background_type_) |
| return; |
| |
| shelf_background_type_ = new_background_type; |
| for (auto& observer : observers_) |
| observer.OnBackgroundUpdated(shelf_background_type_, type); |
| } |
| |
| 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_widget_->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::Rect show_shelf_region_in_screen = shelf_bounds_in_screen; |
| show_shelf_region_in_screen += offset; |
| if (wm_shelf_->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 || !wm_shelf_->IsShelfInitialized()) |
| return SHELF_AUTO_HIDE_HIDDEN; |
| |
| if (shelf_widget_->IsShowingAppList()) |
| return SHELF_AUTO_HIDE_SHOWN; |
| |
| if (shelf_widget_->status_area_widget() && |
| shelf_widget_->status_area_widget()->ShouldShowShelf()) |
| return SHELF_AUTO_HIDE_SHOWN; |
| |
| if (shelf_widget_->IsShowingContextMenu()) |
| return SHELF_AUTO_HIDE_SHOWN; |
| |
| if (shelf_widget_->IsShowingOverflowBubble()) |
| return SHELF_AUTO_HIDE_SHOWN; |
| |
| if (shelf_widget_->IsActive() || |
| (shelf_widget_->status_area_widget() && |
| shelf_widget_->status_area_widget()->IsActive())) |
| return SHELF_AUTO_HIDE_SHOWN; |
| |
| const int64_t shelf_display_id = |
| WmWindow::Get(shelf_widget_->GetNativeWindow()) |
| ->GetDisplayNearestWindow() |
| .id(); |
| const std::vector<WmWindow*> windows = |
| Shell::Get()->mru_window_tracker()->BuildWindowListIgnoreModal(); |
| // Process the window list and check if there are any visible windows. |
| // Ignore app list windows that may be animating to hide after dismissal. |
| bool visible_window = false; |
| for (size_t i = 0; i < windows.size(); ++i) { |
| if (windows[i] && windows[i]->IsVisible() && !IsAppListWindow(windows[i]) && |
| !windows[i]->GetWindowState()->IsMinimized() && |
| windows[i]->GetDisplayNearestWindow().id() == shelf_display_id) { |
| 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 (in_mouse_drag_) |
| return SHELF_AUTO_HIDE_HIDDEN; |
| |
| // Ignore the mouse position if mouse events are disabled. |
| if (!shelf_widget_->IsMouseEventsEnabled()) |
| return SHELF_AUTO_HIDE_HIDDEN; |
| |
| gfx::Rect shelf_region = shelf_widget_->GetWindowBoundsInScreen(); |
| if (shelf_widget_->status_area_widget() && |
| shelf_widget_->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 = wm_shelf_->GetAlignment(); |
| shelf_region.Inset( |
| alignment == SHELF_ALIGNMENT_RIGHT ? -kNotificationBubbleGapHeight : 0, |
| wm_shelf_->IsHorizontalAlignment() ? -kNotificationBubbleGapHeight : 0, |
| alignment == SHELF_ALIGNMENT_LEFT ? -kNotificationBubbleGapHeight : 0, |
| 0); |
| } |
| |
| gfx::Point cursor_position_in_screen = |
| display::Screen::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(WmWindow* window) { |
| if (!window) |
| return false; |
| WmWindow* shelf_window = WmWindow::Get(shelf_widget_->GetNativeWindow()); |
| WmWindow* status_window = |
| WmWindow::Get(shelf_widget_->status_area_widget()->GetNativeWindow()); |
| return (shelf_window && shelf_window->Contains(window)) || |
| (status_window && status_window->Contains(window)); |
| } |
| |
| int ShelfLayoutManager::GetWorkAreaInsets(const State& state, int size) const { |
| if (state.visibility_state == SHELF_VISIBLE) |
| return size; |
| if (state.visibility_state == SHELF_AUTO_HIDE) |
| return GetShelfConstant(SHELF_INSETS_FOR_AUTO_HIDE); |
| return 0; |
| } |
| |
| void ShelfLayoutManager::OnLockStateEvent(LockStateObserver::EventType event) { |
| if (event == EVENT_LOCK_ANIMATION_STARTED) { |
| // Enter the screen locked state and update the visibility to avoid an odd |
| // animation when transitioning the orientation from L/R to bottom. |
| state_.pre_lock_screen_animation_active = true; |
| UpdateShelfVisibilityAfterLoginUIChange(); |
| } else { |
| state_.pre_lock_screen_animation_active = false; |
| } |
| MaybeUpdateShelfBackground(AnimationChangeType::ANIMATE); |
| } |
| |
| void ShelfLayoutManager::SessionStateChanged( |
| session_manager::SessionState state) { |
| // Check transition changes to/from the add user to session and change the |
| // shelf alignment accordingly |
| const bool was_adding_user = state_.IsAddingSecondaryUser(); |
| const bool was_locked = state_.IsScreenLocked(); |
| state_.session_state = state; |
| MaybeUpdateShelfBackground(AnimationChangeType::ANIMATE); |
| if (was_adding_user != state_.IsAddingSecondaryUser()) { |
| UpdateShelfVisibilityAfterLoginUIChange(); |
| return; |
| } |
| |
| // Force the shelf to layout for alignment (bottom if locked, restore the |
| // previous alignment otherwise). |
| if (was_locked != state_.IsScreenLocked()) |
| UpdateShelfVisibilityAfterLoginUIChange(); |
| |
| TargetBounds target_bounds; |
| CalculateTargetBounds(state_, &target_bounds); |
| UpdateBoundsAndOpacity(target_bounds, true /* animate */, |
| true /* change_work_area */, nullptr); |
| UpdateVisibilityState(); |
| } |
| |
| void ShelfLayoutManager::UpdateShelfVisibilityAfterLoginUIChange() { |
| UpdateVisibilityState(); |
| LayoutShelf(); |
| } |
| |
| float ShelfLayoutManager::ComputeTargetOpacity(const State& state) { |
| if (gesture_drag_status_ == GESTURE_DRAG_IN_PROGRESS || |
| state.visibility_state == SHELF_VISIBLE) { |
| return 1.0f; |
| } |
| // In Chrome OS Material Design, when shelf is hidden during auto hide state, |
| // target bounds are also hidden. So the window can extend to the edge of |
| // screen. |
| return (state.visibility_state == SHELF_AUTO_HIDE && |
| state.auto_hide_state == SHELF_AUTO_HIDE_SHOWN) |
| ? 1.0f |
| : 0.0f; |
| } |
| |
| bool ShelfLayoutManager::IsShelfHiddenForFullscreen() const { |
| const WmWindow* fullscreen_window = wm::GetWindowForFullscreenMode( |
| WmWindow::Get(shelf_widget_->GetNativeWindow())); |
| return fullscreen_window && |
| fullscreen_window->GetWindowState()->hide_shelf_when_fullscreen(); |
| } |
| |
| bool ShelfLayoutManager::IsShelfAutoHideForFullscreenMaximized() const { |
| wm::WindowState* active_window = wm::GetActiveWindowState(); |
| return active_window && |
| active_window->autohide_shelf_when_maximized_or_fullscreen(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // ShelfLayoutManager, Gesture functions: |
| |
| 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; |
| MaybeUpdateShelfBackground(AnimationChangeType::ANIMATE); |
| } |
| |
| void ShelfLayoutManager::UpdateGestureDrag(const ui::GestureEvent& gesture) { |
| gesture_drag_amount_ += PrimaryAxisValue(gesture.details().scroll_y(), |
| gesture.details().scroll_x()); |
| LayoutShelf(); |
| } |
| |
| void ShelfLayoutManager::CompleteGestureDrag(const ui::GestureEvent& gesture) { |
| bool horizontal = wm_shelf_->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 (wm_shelf_->GetAlignment()) { |
| case SHELF_ALIGNMENT_BOTTOM: |
| case SHELF_ALIGNMENT_BOTTOM_LOCKED: |
| case SHELF_ALIGNMENT_RIGHT: |
| correct_direction = gesture_drag_amount_ < 0; |
| break; |
| case SHELF_ALIGNMENT_LEFT: |
| 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); |
| } |
| } else { |
| NOTREACHED(); |
| } |
| |
| if (!should_change) { |
| CancelGestureDrag(); |
| return; |
| } |
| |
| shelf_widget_->Deactivate(); |
| shelf_widget_->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 (wm_shelf_->auto_hide_behavior() != new_auto_hide_behavior) |
| wm_shelf_->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; |
| } |
| |
| } // namespace ash |