// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/wm/overview/overview_grid.h"
#include <algorithm>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "ash/constants/ash_features.h"
#include "ash/constants/notifier_catalogs.h"
#include "ash/metrics/histogram_macros.h"
#include "ash/public/cpp/desk_template.h"
#include "ash/public/cpp/metrics_util.h"
#include "ash/public/cpp/saved_desk_delegate.h"
#include "ash/public/cpp/shelf_config.h"
#include "ash/public/cpp/window_properties.h"
#include "ash/resources/vector_icons/vector_icons.h"
#include "ash/root_window_controller.h"
#include "ash/rotator/screen_rotation_animator.h"
#include "ash/screen_util.h"
#include "ash/session/session_controller_impl.h"
#include "ash/shelf/shelf.h"
#include "ash/shelf/shelf_layout_manager.h"
#include "ash/shell.h"
#include "ash/shell_delegate.h"
#include "ash/strings/grit/ash_strings.h"
#include "ash/style/ash_color_id.h"
#include "ash/style/rounded_label_widget.h"
#include "ash/system/toast/toast_manager_impl.h"
#include "ash/wallpaper/wallpaper_controller_impl.h"
#include "ash/wm/desks/default_desk_button.h"
#include "ash/wm/desks/desk_bar_view_base.h"
#include "ash/wm/desks/desk_icon_button.h"
#include "ash/wm/desks/desk_mini_view.h"
#include "ash/wm/desks/desk_mini_view_animations.h"
#include "ash/wm/desks/desk_name_view.h"
#include "ash/wm/desks/desks_constants.h"
#include "ash/wm/desks/desks_controller.h"
#include "ash/wm/desks/desks_util.h"
#include "ash/wm/desks/overview_desk_bar_view.h"
#include "ash/wm/desks/templates/saved_desk_animations.h"
#include "ash/wm/desks/templates/saved_desk_grid_view.h"
#include "ash/wm/desks/templates/saved_desk_library_view.h"
#include "ash/wm/desks/templates/saved_desk_metrics_util.h"
#include "ash/wm/desks/templates/saved_desk_name_view.h"
#include "ash/wm/desks/templates/saved_desk_presenter.h"
#include "ash/wm/desks/templates/saved_desk_save_desk_button.h"
#include "ash/wm/desks/templates/saved_desk_save_desk_button_container.h"
#include "ash/wm/desks/templates/saved_desk_util.h"
#include "ash/wm/gestures/wm_gesture_handler.h"
#include "ash/wm/mru_window_tracker.h"
#include "ash/wm/overview/birch/birch_bar_controller.h"
#include "ash/wm/overview/overview_constants.h"
#include "ash/wm/overview/overview_controller.h"
#include "ash/wm/overview/overview_drop_target.h"
#include "ash/wm/overview/overview_grid_event_handler.h"
#include "ash/wm/overview/overview_item.h"
#include "ash/wm/overview/overview_item_base.h"
#include "ash/wm/overview/overview_item_view.h"
#include "ash/wm/overview/overview_metrics.h"
#include "ash/wm/overview/overview_session.h"
#include "ash/wm/overview/overview_types.h"
#include "ash/wm/overview/overview_utils.h"
#include "ash/wm/overview/overview_window_drag_controller.h"
#include "ash/wm/overview/scoped_overview_animation_settings.h"
#include "ash/wm/overview/scoped_overview_hide_windows.h"
#include "ash/wm/overview/scoped_overview_wallpaper_clipper.h"
#include "ash/wm/snap_group/snap_group_controller.h"
#include "ash/wm/splitview/split_view_constants.h"
#include "ash/wm/splitview/split_view_controller.h"
#include "ash/wm/splitview/split_view_divider.h"
#include "ash/wm/splitview/split_view_overview_session.h"
#include "ash/wm/splitview/split_view_setup_view.h"
#include "ash/wm/splitview/split_view_utils.h"
#include "ash/wm/window_properties.h"
#include "ash/wm/window_restore/informed_restore_contents_view.h"
#include "ash/wm/window_restore/informed_restore_controller.h"
#include "ash/wm/window_state_delegate.h"
#include "ash/wm/window_util.h"
#include "ash/wm/wm_constants.h"
#include "ash/wm/workspace/backdrop_controller.h"
#include "ash/wm/workspace/workspace_layout_manager.h"
#include "ash/wm/workspace_controller.h"
#include "base/containers/adapters.h"
#include "base/containers/unique_ptr_adapters.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/raw_ptr.h"
#include "base/metrics/histogram_functions.h"
#include "base/numerics/safe_conversions.h"
#include "base/ranges/algorithm.h"
#include "base/trace_event/trace_event.h"
#include "chromeos/constants/chromeos_features.h"
#include "chromeos/ui/base/window_properties.h"
#include "chromeos/ui/wm/window_util.h"
#include "components/app_restore/full_restore_utils.h"
#include "third_party/abseil-cpp/absl/cleanup/cleanup.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/compositor/compositor_observer.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_animator.h"
#include "ui/compositor/presentation_time_recorder.h"
#include "ui/compositor/throughput_tracker.h"
#include "ui/display/screen.h"
#include "ui/gfx/geometry/size_f.h"
#include "ui/gfx/geometry/transform.h"
#include "ui/gfx/geometry/transform_util.h"
#include "ui/gfx/geometry/vector2d_f.h"
#include "ui/gfx/range/range_f.h"
#include "ui/views/animation/animation_builder.h"
#include "ui/views/highlight_border.h"
#include "ui/views/view_utils.h"
#include "ui/views/widget/widget.h"
#include "ui/wm/core/coordinate_conversion.h"
namespace ash {
namespace {
// Values for the no items indicator which appears when opening overview mode
// with no opened windows.
constexpr int kNoItemsIndicatorHeightDp = 32;
constexpr int kNoItemsIndicatorHorizontalPaddingDp = 16;
constexpr int kNoItemsIndicatorRoundingDp = 16;
constexpr int kNoItemsIndicatorVerticalPaddingDp = 8;
// Distance from the bottom of the save desk as template button to the top of
// the first overview item.
constexpr int kSaveDeskAsTemplateOverviewItemSpacingDp = 45;
// Distance from the bottom of the last overview item to the top of the split
// view setup view toast widget.
constexpr int kSplitViewSetupToastSpacingDp = 40;
// Distance between the bottom of the toast and the bottom of the work area
// which will be the top edge of the shelf if it is shown.
constexpr int kMinimumDistanceBetweenToastAndWorkAreaDp = 8;
// Windows are not allowed to get taller than this.
constexpr int kMaxHeight = 512;
// Margins reserved in the overview mode.
constexpr float kOverviewInsetRatio = 0.05f;
// Additional vertical inset reserved for windows in overview mode.
constexpr float kOverviewVerticalInset = 0.1f;
// Number of rows for windows in tablet overview mode.
constexpr int kScrollingLayoutRow = 2;
constexpr int kMinimumItemsForScrollingLayout = 6;
constexpr int kTabletModeOverviewItemTopPaddingDp = 16;
// The bottom padding applied to the bottom of the birch bar.
constexpr int kBirchBarBottomPadding = 16;
constexpr float kInformedRestoreDialogInitScale = 1.2f;
// Wait a while before unpausing the occlusion tracker after a scroll has
// completed as the user may start another scroll.
constexpr base::TimeDelta kOcclusionUnpauseDurationForScroll =
base::Milliseconds(500);
constexpr base::TimeDelta kOcclusionUnpauseDurationForRotation =
base::Milliseconds(300);
// Toast id for the toast that is displayed when a user tries to move a window
// that is visible on all desks to another desk.
constexpr char kMoveVisibleOnAllDesksWindowToastId[] =
"ash.wm.overview.move_visible_on_all_desks_window_toast";
// Histogram names for overview enter/exit smoothness in clamshell,
// tablet mode and splitview.
constexpr char kOverviewEnterClamshellHistogram[] =
"Ash.Overview.AnimationSmoothness.Enter.ClamshellMode";
constexpr char kOverviewEnterSingleClamshellHistogram[] =
"Ash.Overview.AnimationSmoothness.Enter.SingleClamshellMode";
constexpr char kOverviewEnterTabletHistogram[] =
"Ash.Overview.AnimationSmoothness.Enter.TabletMode";
constexpr char kOverviewEnterMinimizedTabletHistogram[] =
"Ash.Overview.AnimationSmoothness.Enter.MinimizedTabletMode";
constexpr char kOverviewEnterSplitViewHistogram[] =
"Ash.Overview.AnimationSmoothness.Enter.SplitView";
constexpr char kOverviewExitClamshellHistogram[] =
"Ash.Overview.AnimationSmoothness.Exit.ClamshellMode";
constexpr char kOverviewExitSingleClamshellHistogram[] =
"Ash.Overview.AnimationSmoothness.Exit.SingleClamshellMode";
constexpr char kOverviewExitTabletHistogram[] =
"Ash.Overview.AnimationSmoothness.Exit.TabletMode";
constexpr char kOverviewExitMinimizedTabletHistogram[] =
"Ash.Overview.AnimationSmoothness.Exit.MinimizedTabletMode";
constexpr char kOverviewExitSplitViewHistogram[] =
"Ash.Overview.AnimationSmoothness.Exit.SplitView";
// The UMA histogram that records presentation time for grid scrolling in the
// new overview layout.
constexpr char kOverviewScrollHistogram[] =
"Ash.Overview.Scroll.PresentationTime.TabletMode";
constexpr char kOverviewScrollMaxLatencyHistogram[] =
"Ash.Overview.Scroll.PresentationTime.MaxLatency.TabletMode";
template <const char* clamshell_single_name,
const char* clamshell_multi_name,
const char* tablet_name,
const char* splitview_name,
const char* tablet_minimized_name>
class OverviewMetricsTracker : public OverviewGrid::MetricsTracker {
public:
OverviewMetricsTracker(ui::Compositor* compositor,
bool in_split_view,
bool single_animation_in_clamshell,
bool minimized_in_tablet)
: tracker_(compositor->RequestNewThroughputTracker()) {
tracker_.Start(metrics_util::ForSmoothnessV3(base::BindRepeating(
&OverviewMetricsTracker::ReportOverviewSmoothness, in_split_view,
single_animation_in_clamshell, minimized_in_tablet)));
}
OverviewMetricsTracker(const OverviewMetricsTracker&) = delete;
OverviewMetricsTracker& operator=(const OverviewMetricsTracker&) = delete;
~OverviewMetricsTracker() override { tracker_.Stop(); }
static void ReportOverviewSmoothness(bool in_split_view,
bool single_animation_in_clamshell,
bool minimized_in_tablet,
int smoothness) {
if (single_animation_in_clamshell)
UMA_HISTOGRAM_PERCENTAGE_IN_CLAMSHELL(clamshell_single_name, smoothness);
else
UMA_HISTOGRAM_PERCENTAGE_IN_CLAMSHELL(clamshell_multi_name, smoothness);
if (minimized_in_tablet) {
UMA_HISTOGRAM_PERCENTAGE_IN_TABLET_NON_SPLITVIEW(
in_split_view, tablet_minimized_name, smoothness);
} else {
UMA_HISTOGRAM_PERCENTAGE_IN_TABLET_NON_SPLITVIEW(in_split_view,
tablet_name, smoothness);
}
UMA_HISTOGRAM_PERCENTAGE_IN_SPLITVIEW(in_split_view, splitview_name,
smoothness);
}
private:
ui::ThroughputTracker tracker_;
};
using OverviewEnterMetricsTracker =
OverviewMetricsTracker<kOverviewEnterSingleClamshellHistogram,
kOverviewEnterClamshellHistogram,
kOverviewEnterTabletHistogram,
kOverviewEnterSplitViewHistogram,
kOverviewEnterMinimizedTabletHistogram>;
using OverviewExitMetricsTracker =
OverviewMetricsTracker<kOverviewExitSingleClamshellHistogram,
kOverviewExitClamshellHistogram,
kOverviewExitTabletHistogram,
kOverviewExitSplitViewHistogram,
kOverviewExitMinimizedTabletHistogram>;
class ShutdownAnimationMetricsTrackerObserver : public OverviewObserver,
public ui::CompositorObserver {
public:
ShutdownAnimationMetricsTrackerObserver(ui::Compositor* compositor,
bool in_split_view,
bool single_animation,
bool minimized_in_tablet)
: compositor_(compositor),
metrics_tracker_(compositor,
in_split_view,
single_animation,
minimized_in_tablet) {
compositor->AddObserver(this);
OverviewController::Get()->AddObserver(this);
}
ShutdownAnimationMetricsTrackerObserver(
const ShutdownAnimationMetricsTrackerObserver&) = delete;
ShutdownAnimationMetricsTrackerObserver& operator=(
const ShutdownAnimationMetricsTrackerObserver&) = delete;
~ShutdownAnimationMetricsTrackerObserver() override {
compositor_->RemoveObserver(this);
if (OverviewController* overview_controller =
Shell::Get()->overview_controller()) {
overview_controller->RemoveObserver(this);
}
}
// OverviewObserver:
void OnOverviewModeEndingAnimationComplete(bool canceled) override {
delete this;
}
void OnCompositingShuttingDown(ui::Compositor* compositor) override {
DCHECK_EQ(compositor_, compositor);
delete this;
}
private:
raw_ptr<ui::Compositor> compositor_;
OverviewExitMetricsTracker metrics_tracker_;
};
// Creates `save_desk_button_container_widget_`. It contains SaveDeskAsTemplate
// button and save for later button.
std::unique_ptr<views::Widget> CreateSaveDeskButtonContainerWidget(
aura::Window* root_window) {
views::Widget::InitParams params(
views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET,
views::Widget::InitParams::TYPE_POPUP);
params.activatable = views::Widget::InitParams::Activatable::kYes;
params.opacity = views::Widget::InitParams::WindowOpacity::kTranslucent;
params.name = "SaveDeskButtonContainerWidget";
params.accept_events = true;
// This widget is hidden during window dragging, but will become visible on
// mouse/touch release. Place it in the active desk container so it remains
// beneath the dragged window when it is animating back to the overview grid.
params.parent = desks_util::GetActiveDeskContainerForRoot(root_window);
params.init_properties_container.SetProperty(kHideInDeskMiniViewKey, true);
// This should not show up in the MRU list. Otherwise, it will be treated as
// unsupported crostini app.
params.init_properties_container.SetProperty(kOverviewUiKey, true);
auto widget = std::make_unique<views::Widget>();
widget->set_focus_on_creation(false);
widget->Init(std::move(params));
// Turn off default widget animations.
widget->SetVisibilityAnimationTransition(views::Widget::ANIMATE_NONE);
aura::Window* window = widget->GetNativeWindow();
window->parent()->StackChildAtBottom(window);
return widget;
}
float GetWantedDropTargetOpacity(
SplitViewDragIndicators::WindowDraggingState window_dragging_state) {
switch (window_dragging_state) {
case SplitViewDragIndicators::WindowDraggingState::kNoDrag:
case SplitViewDragIndicators::WindowDraggingState::kOtherDisplay:
case SplitViewDragIndicators::WindowDraggingState::kToSnapPrimary:
case SplitViewDragIndicators::WindowDraggingState::kToSnapSecondary:
return 0.f;
case SplitViewDragIndicators::WindowDraggingState::kFromOverview:
case SplitViewDragIndicators::WindowDraggingState::kFromTop:
case SplitViewDragIndicators::WindowDraggingState::kFromShelf:
return 1.f;
case SplitViewDragIndicators::WindowDraggingState::kFromFloat:
NOTREACHED();
}
}
gfx::Insets GetGridInsetsImpl(const gfx::Rect& grid_bounds) {
const int horizontal_inset =
base::ClampFloor(kOverviewInsetRatio *
std::min(grid_bounds.width(), grid_bounds.height()));
const int vertical_inset =
horizontal_inset +
kOverviewVerticalInset * (grid_bounds.height() - 2 * horizontal_inset);
return gfx::Insets::VH(std::max(0, vertical_inset),
std::max(0, horizontal_inset));
}
bool ShouldExcludeItemFromGridLayout(
OverviewItemBase* item,
const base::flat_set<OverviewItemBase*>& ignored_items) {
return item->animating_to_close() || ignored_items.contains(item);
}
bool IsUnsupportedWindow(aura::Window* window) {
const bool has_restore_id =
!wm::GetTransientParent(window) &&
(OverviewController::Get()->disable_app_id_check_for_saved_desks() ||
!saved_desk_util::GetAppId(window).empty());
return !has_restore_id ||
!Shell::Get()->saved_desk_delegate()->IsWindowSupportedForSavedDesk(
window);
}
bool IsIncognitoWindow(aura::Window* window) {
return !Shell::Get()->saved_desk_delegate()->IsWindowPersistable(window);
}
// Returns the window(s) associated with dragging which can be the window(s)
// represented by the `OverviewItemBase` or a preset `dragged_window`.
aura::Window::Windows GetWindowsAssociatedWithDragging(
OverviewItemBase* grid_dragged_item,
aura::Window* dragged_window) {
return grid_dragged_item ? grid_dragged_item->GetWindows()
: aura::Window::Windows({dragged_window});
}
// Returns true if all the `windows` associated with the drag are not null and
// have parent.
bool AreDraggedWindowsValid(const aura::Window::Windows& windows) {
for (const aura::Window* window : windows) {
if (!window || !window->parent()) {
return false;
}
}
return true;
}
// Returns true if all the `windows` associated with the drag are maximized.
bool AreAllWindowsMaximized(const aura::Window::Windows& windows) {
for (const aura::Window* window : windows) {
if (!WindowState::Get(window)->IsMaximized()) {
return false;
}
}
return true;
}
// Returns the total size of the `windows` associated with the drag.
gfx::Size GetTotalDraggedWindowsSize(const aura::Window::Windows& windows) {
gfx::Rect total_bounds;
for (aura::Window* win : windows) {
total_bounds.Union(win->bounds());
}
return total_bounds.size();
}
// Returns the total size of the given `windows` including the transient
// children. If the given `windows` belong to the same snap group, the total
// size needs to be enlarged to include the size of the divider.
gfx::SizeF GetTotalUnionSizeIncludingTransients(
const aura::Window::Windows& windows) {
gfx::RectF total_bounds;
for (aura::Window* win : windows) {
total_bounds.Union(GetUnionScreenBoundsForWindow(win));
}
gfx::SizeF total_size = total_bounds.size();
// TODO(michelefan): Add extra width of the divider for the height of the
// `total_size` in portrait mode.
if (windows.size() == 2u) {
total_size.Enlarge(kSplitviewDividerShortSideLength, 0);
}
return total_size;
}
// Returns the maximum of the `aura::client::kTopViewInset` among the `windows`.
int GetTopViewInset(const aura::Window::Windows& windows) {
int inset = 0;
for (aura::Window* win : windows) {
const int win_inset = win->GetProperty(aura::client::kTopViewInset);
inset = std::max(inset, win_inset);
}
return inset;
}
// Returns the bottom padding of birch bar according to the appearance of the
// home launcher.
int GetBirchBarBottomPadding(aura::Window* root_window) {
// There is no padding when home launcher shows.
return Shelf::ForWindow(root_window)
->shelf_layout_manager()
->hotseat_state() == HotseatState::kShownHomeLauncher
? 0
: kBirchBarBottomPadding;
}
// Returns the corresponding `SplitViewOverviewSessionExitPoint` with the
// overview end action deduced from the given `overview_session`.
SplitViewOverviewSessionExitPoint GetSplitViewOverviewSessionExitPoint(
OverviewSession* overview_session) {
OverviewEndAction overview_end_action =
overview_session->overview_end_action();
if (overview_end_action == OverviewEndAction::kWindowActivating) {
return SplitViewOverviewSessionExitPoint::kCompleteByActivating;
} else if (overview_end_action == OverviewEndAction::kKeyEscapeOrBack ||
overview_end_action ==
OverviewEndAction::kClickingOutsideWindowsInOverview) {
return SplitViewOverviewSessionExitPoint::kSkip;
} else if (overview_end_action == OverviewEndAction::kShuttingDown) {
return SplitViewOverviewSessionExitPoint::kShutdown;
}
return SplitViewOverviewSessionExitPoint::kUnspecified;
}
// Returns false if any of the items in `grid` covers the entire workspace, true
// otherwise.
bool ShouldAnimateWallpaper(OverviewGrid* grid) {
// Do not animate wallpaper if enter exit type is immediate.
const OverviewEnterExitType enter_exit_type =
grid->overview_session()->enter_exit_overview_type();
if (enter_exit_type == OverviewEnterExitType::kImmediateEnter ||
enter_exit_type == OverviewEnterExitType::kImmediateEnterWithoutFocus ||
enter_exit_type == OverviewEnterExitType::kImmediateExit) {
return false;
}
// If one of the windows covers the workspace, we can skip animating the
// wallpaper.
for (const auto& overview_item : grid->item_list()) {
if (CanCoverAvailableWorkspace(overview_item->GetWindow())) {
return false;
}
}
return true;
}
// Returns true if the birch bar should be shown in current state.
bool ShouldShowBirchBar(aura::Window* root_window) {
// The birch bar should not be shown in tablet mode, partial split view,
// the forest feature is disabled, non-primary users, or the birch bars are
// disabled by users. We don't need to worry about showing/hiding the bar
// dynamically on primary/secondary user switch because we exit overview when
// we switch users.
return features::IsForestFeatureEnabled() &&
Shell::Get()->session_controller()->IsUserPrimary() &&
BirchBarController::Get()->GetShowBirchSuggestions() &&
!SplitViewController::Get(root_window)->InSplitViewMode();
}
bool ShouldShowInformedRestoreDialog(aura::Window* root_window) {
return root_window == Shell::GetPrimaryRootWindow() &&
features::IsForestFeatureEnabled() &&
!!Shell::Get()->informed_restore_controller()->contents_data();
}
enum class TooltipStatus {
kOk = 0,
kReachMax,
kIncognitoWindow,
kUnsupportedWindow,
kIncognitoAndUnsupportedWindow,
kNumberOfTooltipStatus,
};
constexpr std::array<int,
static_cast<int>(TooltipStatus::kNumberOfTooltipStatus)>
kSaveAsTemplateButtonTooltipIDs = {
IDS_ASH_DESKS_TEMPLATES_SAVE_DESK_AS_TEMPLATE_BUTTON,
IDS_ASH_DESKS_TEMPLATES_MAX_TEMPLATES_TOOLTIP,
IDS_ASH_DESKS_TEMPLATES_UNSUPPORTED_INCOGNITO_TOOLTIP,
IDS_ASH_DESKS_TEMPLATES_UNSUPPORTED_LINUX_APPS_TOOLTIP,
IDS_ASH_DESKS_TEMPLATES_UNSUPPORTED_LINUX_APPS_AND_INCOGNITO_TOOLTIP,
};
constexpr std::array<int,
static_cast<int>(TooltipStatus::kNumberOfTooltipStatus)>
kSaveForLaterButtonTooltipIDs = {
IDS_ASH_DESKS_TEMPLATES_SAVE_DESK_FOR_LATER_BUTTON,
IDS_ASH_DESKS_TEMPLATES_MAX_SAVED_DESKS_TOOLTIP,
IDS_ASH_DESKS_TEMPLATES_UNSUPPORTED_INCOGNITO_TOOLTIP,
IDS_ASH_DESKS_TEMPLATES_UNSUPPORTED_LINUX_APPS_TOOLTIP,
IDS_ASH_DESKS_TEMPLATES_UNSUPPORTED_LINUX_APPS_AND_INCOGNITO_TOOLTIP,
};
int GetTooltipID(DeskTemplateType type, TooltipStatus status) {
switch (type) {
case DeskTemplateType::kTemplate:
return kSaveAsTemplateButtonTooltipIDs[static_cast<int>(status)];
case DeskTemplateType::kSaveAndRecall:
return kSaveForLaterButtonTooltipIDs[static_cast<int>(status)];
case DeskTemplateType::kFloatingWorkspace:
case DeskTemplateType::kUnknown:
NOTREACHED();
}
}
} // namespace
OverviewGrid::OverviewGrid(
aura::Window* root_window,
const std::vector<raw_ptr<aura::Window, VectorExperimental>>& windows,
OverviewSession* overview_session,
base::WeakPtr<WindowOcclusionCalculator> window_occlusion_calculator)
: root_window_(root_window),
overview_session_(overview_session),
split_view_drag_indicators_(
ShouldAllowSplitView()
? std::make_unique<SplitViewDragIndicators>(root_window)
: nullptr),
bounds_(GetGridBoundsInScreen(root_window)),
window_occlusion_calculator_(window_occlusion_calculator) {
TRACE_EVENT0("ui", "OverviewGrid::OverviewGrid");
for (aura::Window* window : windows) {
if (window->GetRootWindow() != root_window)
continue;
// Stop ongoing animations before entering overview mode. Because we are
// deferring SetTransform of the windows beneath the window covering the
// available workspace, we need to set the correct transforms of these
// windows before entering overview mode again in the
// OnImplicitAnimationsCompleted() of the observer of the
// available-workspace-covering window's animation.
if (auto* animator = window->layer()->GetAnimator();
animator && animator->is_animating()) {
animator->StopAnimating();
}
std::unique_ptr<OverviewItemBase> overview_item_base =
OverviewItemBase::Create(window, overview_session_, this);
UpdateNumSavedDeskUnsupportedWindows(overview_item_base->GetWindows(),
/*increment=*/true);
item_list_.push_back(std::move(overview_item_base));
}
}
OverviewGrid::~OverviewGrid() = default;
void OverviewGrid::Shutdown(OverviewEnterExitType exit_type) {
TRACE_EVENT0("ui", "OverviewGrid::Shutdown");
EndNudge();
auto* root_controller = RootWindowController::ForWindow(root_window_);
root_controller->EndSplitViewOverviewSession(
GetSplitViewOverviewSessionExitPoint(overview_session_));
SplitViewController::Get(root_window_)->RemoveObserver(this);
if (auto* animator = root_controller->GetScreenRotationAnimator()) {
animator->RemoveObserver(this);
}
Shell::Get()->wallpaper_controller()->RemoveObserver(this);
grid_event_handler_.reset();
if (IsShowingSavedDeskLibrary())
HideSavedDeskLibrary(/*exit_overview=*/true);
bool has_non_cover_animating = false;
int animate_count = 0;
for (const auto& item : item_list_) {
if (item->should_animate_when_exiting() && !has_non_cover_animating) {
has_non_cover_animating |= !CanCoverAvailableWorkspace(item->GetWindow());
animate_count++;
}
item->Shutdown();
}
const bool in_split_view =
SplitViewController::Get(root_window_)->InSplitViewMode();
SnapGroupController* snap_group_controller = SnapGroupController::Get();
const bool should_report_split_view_metrics =
in_split_view ||
(snap_group_controller &&
snap_group_controller->GetTopmostVisibleSnapGroup(root_window_));
// OverviewGrid in splitscreen does not include the window to be activated.
if (!item_list_.empty() || should_report_split_view_metrics) {
const bool minimized_in_tablet =
overview_session_->enter_exit_overview_type() ==
OverviewEnterExitType::kFadeOutExit;
const bool single_animation_in_clamshell =
(animate_count == 1 && !has_non_cover_animating) &&
!display::Screen::GetScreen()->InTabletMode();
// The following instance self-destructs when shutdown animation ends.
new ShutdownAnimationMetricsTrackerObserver(
root_window_->layer()->GetCompositor(),
should_report_split_view_metrics, single_animation_in_clamshell,
minimized_in_tablet);
}
drop_target_ = nullptr;
item_list_.clear();
overview_session_ = nullptr;
if (no_windows_widget_) {
if (exit_type == OverviewEnterExitType::kImmediateExit) {
ImmediatelyCloseWidgetOnExit(std::move(no_windows_widget_));
} else {
// Fade out the no windows widget. This animation continues past the
// lifetime of `this`.
FadeOutWidgetFromOverview(std::move(no_windows_widget_),
OVERVIEW_ANIMATION_RESTORE_WINDOW);
}
}
if (informed_restore_widget_) {
if (exit_type == OverviewEnterExitType::kImmediateExit) {
ImmediatelyCloseWidgetOnExit(std::move(informed_restore_widget_));
} else {
// This animation continues past the lifetime of `this`.
FadeOutWidgetFromOverview(std::move(informed_restore_widget_),
OVERVIEW_ANIMATION_EXIT_OVERVIEW_MODE_FADE_OUT);
}
}
// After this, the desk bar widget will not be owned by this overview grid
// anymore.
if (desks_widget_) {
if (exit_type != OverviewEnterExitType::kImmediateExit) {
PerformDeskBarSlideAnimation(std::move(desks_widget_),
desks_bar_view_->IsZeroState());
}
desks_widget_.reset();
desks_bar_view_ = nullptr;
}
if (birch_bar_widget_) {
// Cache the widget since we may need to pass the ownership to animation
// observer.
auto birch_bar_widget = std::move(birch_bar_widget_);
// Destroy the birch bar widget to clear the related pointers before
// fade-out animation to avoid dangling ptrs.
DestroyBirchBarWidget();
if (exit_type != OverviewEnterExitType::kInformedRestore &&
exit_type != OverviewEnterExitType::kImmediateExit) {
FadeOutWidgetFromOverview(
std::move(birch_bar_widget),
OVERVIEW_ANIMATION_EXIT_OVERVIEW_MODE_BIRCH_BAR_FADE_OUT);
}
}
}
void OverviewGrid::PrepareForOverview() {
const bool should_animate_wallpaper = ShouldAnimateWallpaper(this);
if (!should_animate_wallpaper) {
MaybeInitDesksWidget();
}
MaybeInitBirchBarWidget();
OverviewEnterExitType enter_exit_type =
overview_session_->enter_exit_overview_type();
if (features::IsForestFeatureEnabled()) {
auto animation_type =
ScopedOverviewWallpaperClipper::AnimationType::kEnterOverview;
if (!should_animate_wallpaper) {
animation_type = ScopedOverviewWallpaperClipper::AnimationType::kNone;
} else if (enter_exit_type == OverviewEnterExitType::kInformedRestore) {
animation_type =
ScopedOverviewWallpaperClipper::AnimationType::kEnterInformedRestore;
}
scoped_overview_wallpaper_clipper_ =
std::make_unique<ScopedOverviewWallpaperClipper>(this, animation_type);
}
// TODO(b/326434696): Currently this will return false if there is no restore
// data in the pine contents data. Show the zero-state dialog.
if (ShouldShowInformedRestoreDialog(root_window_)) {
informed_restore_widget_ =
InformedRestoreContentsView::Create(GetGridEffectiveBounds());
informed_restore_widget_->ShowInactive();
// If the enter type is immediate, `ShowInactive()` is sufficient as
// `informed_restore_widget_` has no default animation. Otherwise, set the
// opacity to 0.f and perform a fade in animation.
if (enter_exit_type != OverviewEnterExitType::kImmediateEnter) {
auto* widget_layer = informed_restore_widget_->GetLayer();
widget_layer->SetOpacity(0.f);
widget_layer->SetTransform(gfx::TransformAboutPivot(
gfx::RectF(widget_layer->size()).CenterPoint(),
gfx::Transform::MakeScale(kInformedRestoreDialogInitScale)));
FadeInAndTransformWidgetToOverview(
informed_restore_widget_.get(), gfx::Transform(),
OVERVIEW_ANIMATION_SHOW_INFORMED_RESTORE_DIALOG_ON_ENTER,
/*observe=*/true);
}
}
for (const auto& item : item_list_) {
item->PrepareForOverview();
}
SplitViewController::Get(root_window_)->AddObserver(this);
if (display::Screen::GetScreen()->InTabletMode()) {
if (auto* animator = RootWindowController::ForWindow(root_window_)
->GetScreenRotationAnimator()) {
animator->AddObserver(this);
}
}
grid_event_handler_ = std::make_unique<OverviewGridEventHandler>(this);
Shell::Get()->wallpaper_controller()->AddObserver(this);
}
void OverviewGrid::PositionWindowsContinuously(float y_offset) {
const float scroll_ratio = y_offset / WmGestureHandler::kVerticalThresholdDp;
// Move the desks bar up/down.
if (desks_bar_view_) {
desks_bar_view_->layer()->SetTransform(gfx::Transform::MakeTranslation(
0, desks_bar_view_->height() * (scroll_ratio - 1)));
}
// Compute and adjust the "No recent items" label.
if (no_windows_widget_) {
no_windows_widget_->GetLayer()->SetOpacity(
std::clamp(0.01f, scroll_ratio, 1.f));
}
if (!cached_transforms_.empty()) {
// TODO(http://b/297923747): Integrate continuous animation with snap
// groups.
for (const auto& [overview_item, transform] : cached_transforms_) {
overview_item->OnOverviewItemContinuousScroll(transform, scroll_ratio);
}
return;
}
if (item_list_.empty()) {
return;
}
// The first time we call this function we want to compute the target
// transforms.
const std::vector<gfx::RectF> target_rects =
ShouldUseScrollingLayout(/*ignored_items_size=*/0u)
? GetWindowRectsForScrollingLayout({})
: GetWindowRects({});
CHECK_EQ(item_list_.size(), target_rects.size());
for (size_t i = 0; i < item_list_.size(); ++i) {
OverviewItemBase* overview_item = item_list_[i].get();
cached_transforms_[overview_item] =
overview_item->ComputeTargetTransform(target_rects[i]);
if (WindowState::Get(overview_item->GetWindow())->IsMinimized()) {
overview_item->SetBounds(target_rects[i], OVERVIEW_ANIMATION_NONE);
} else {
// Keep the overview header, backdrop, etc. and rounded corners and shadow
// hidden during the trackpad swipe. They will be shown after the swipe is
// completed.
overview_item->item_widget()->GetLayer()->SetOpacity(0.f);
overview_item->UpdateRoundedCornersAndShadow();
}
}
// When starting a continuous scroll to EXIT overview mode, hide the save
// desk button immediately.
// When starting a continuous scroll to ENTER overview mode, the save desk
// button will be shown once overview mode is fully entered.
if (IsSaveDeskButtonContainerVisible()) {
UpdateSaveDeskButtons();
}
}
void OverviewGrid::PositionWindows(
bool animate,
const base::flat_set<OverviewItemBase*>& ignored_items,
OverviewTransition transition) {
if (!overview_session_ || suspend_reposition_) {
return;
}
if (item_list_.empty()) {
return;
}
DCHECK_NE(transition, OverviewTransition::kExit);
std::vector<gfx::RectF> rects =
ShouldUseScrollingLayout(ignored_items.size())
? GetWindowRectsForScrollingLayout(ignored_items)
: GetWindowRects(ignored_items);
if (transition == OverviewTransition::kEnter) {
CalculateWindowListAnimationStates(/*selected_item=*/nullptr, transition,
rects);
}
// Position the windows centering the left-aligned rows vertically. Do not
// position items in |ignored_items|.
OverviewAnimationType animation_type = OVERVIEW_ANIMATION_NONE;
switch (transition) {
case OverviewTransition::kEnter: {
const bool entering_from_home =
overview_session_->enter_exit_overview_type() ==
OverviewEnterExitType::kFadeInEnter;
animation_type = entering_from_home
? OVERVIEW_ANIMATION_ENTER_FROM_HOME_LAUNCHER
: OVERVIEW_ANIMATION_LAYOUT_OVERVIEW_ITEMS_ON_ENTER;
break;
}
case OverviewTransition::kInOverview:
animation_type = OVERVIEW_ANIMATION_LAYOUT_OVERVIEW_ITEMS_IN_OVERVIEW;
break;
case OverviewTransition::kExit:
NOTREACHED();
}
int animate_count = 0;
bool has_non_cover_animating = false;
std::vector<OverviewAnimationType> animation_types(rects.size());
const bool can_do_spawn_animation =
animate && transition == OverviewTransition::kInOverview;
for (size_t i = 0; i < item_list_.size(); ++i) {
OverviewItemBase* window_item = item_list_[i].get();
if (ShouldExcludeItemFromGridLayout(window_item, ignored_items)) {
rects[i].SetRect(0, 0, 0, 0);
continue;
}
// Calculate if each window item needs animation.
bool should_animate_item = animate;
// If we're in entering overview process, not all window items in the grid
// might need animation even if the grid needs animation.
if (animate && transition == OverviewTransition::kEnter) {
should_animate_item = window_item->should_animate_when_entering();
if (should_animate_item && !has_non_cover_animating) {
has_non_cover_animating |=
!CanCoverAvailableWorkspace(window_item->GetWindow());
++animate_count;
}
}
if (can_do_spawn_animation && window_item->should_use_spawn_animation())
animation_type = OVERVIEW_ANIMATION_SPAWN_ITEM_IN_OVERVIEW;
animation_types[i] =
should_animate_item ? animation_type : OVERVIEW_ANIMATION_NONE;
}
if (animate && transition == OverviewTransition::kEnter &&
!item_list_.empty()) {
bool single_animation_in_clamshell =
animate_count == 1 && !has_non_cover_animating &&
!display::Screen::GetScreen()->InTabletMode();
bool minimized_in_tablet = overview_session_->enter_exit_overview_type() ==
OverviewEnterExitType::kFadeInEnter;
metrics_tracker_ = std::make_unique<OverviewEnterMetricsTracker>(
item_list_[0]->GetWindow()->layer()->GetCompositor(),
SplitViewController::Get(root_window_)->InSplitViewMode(),
single_animation_in_clamshell, minimized_in_tablet);
}
// Apply the animation after creating metrics_tracker_ so that unit test
// can correctly count the measure requests.
for (size_t i = 0; i < item_list_.size(); ++i) {
if (const gfx::RectF& rect = rects[i]; !rect.IsEmpty()) {
item_list_[i].get()->SetBounds(rect, animation_types[i]);
}
}
UpdateSaveDeskButtons();
// Needed to include the toast when we init the grid.
UpdateSplitViewSetupViewWidget();
// This is a no-op if the feature ContinuousOverviewScrollAnimation is not
// enabled. Once windows are placed at their final positions, clear transforms
// so that they get re-calculated when a continuous downward scroll begins.
cached_transforms_.clear();
}
OverviewItemBase* OverviewGrid::GetOverviewItemContaining(
const aura::Window* window) const {
for (const auto& window_item : item_list_) {
if (window_item && window_item->Contains(window)) {
return window_item.get();
}
}
return nullptr;
}
void OverviewGrid::AddItem(
aura::Window* window,
bool reposition,
bool animate,
const base::flat_set<OverviewItemBase*>& ignored_items,
size_t index,
bool use_spawn_animation,
bool restack) {
CHECK(!GetOverviewItemContaining(window));
CHECK_LE(index, item_list_.size());
std::unique_ptr<OverviewItemBase> overview_item_base =
OverviewItemBase::Create(window, overview_session_, this);
UpdateNumSavedDeskUnsupportedWindows(overview_item_base->GetWindows(),
/*increment=*/true);
item_list_.insert(item_list_.begin() + index, std::move(overview_item_base));
if (overview_session_)
overview_session_->UpdateFrameThrottling();
auto* item = item_list_[index].get();
item->PrepareForOverview();
// No animations if the saved desk grid is showing, even if `animate` is true.
const bool should_animate = animate && !IsShowingSavedDeskLibrary();
if (should_animate && use_spawn_animation && reposition) {
item->SetShouldUseSpawnAnimation(true);
} else {
// The item is added after overview enter animation is complete, so
// just call OnStartingAnimationComplete() only if we won't animate it with
// with the spawn animation. Otherwise, OnStartingAnimationComplete() will
// be called when the spawn-item-animation completes (See
// OverviewItem::OnItemSpawnedAnimationCompleted()).
item->OnStartingAnimationComplete();
}
if (restack) {
if (reposition && should_animate)
item->set_should_restack_on_animation_end(true);
else
item->Restack();
}
if (reposition)
PositionWindows(should_animate, ignored_items);
if (IsShowingSavedDeskLibrary()) {
item->HideForSavedDeskLibrary(/*animate=*/false);
}
}
void OverviewGrid::AppendItem(aura::Window* window,
bool reposition,
bool animate,
bool use_spawn_animation) {
AddItem(window, reposition, animate, /*ignored_items=*/{}, item_list_.size(),
use_spawn_animation, /*restack=*/false);
}
void OverviewGrid::AddItemInMruOrder(aura::Window* window,
bool reposition,
bool animate,
bool restack,
bool use_spawn_animation) {
AddItem(window, reposition, animate, /*ignored_items=*/{},
FindInsertionIndex(window), use_spawn_animation, restack);
}
void OverviewGrid::RemoveItem(OverviewItemBase* overview_item,
bool item_destroying,
bool reposition) {
EndNudge();
// Use reverse iterator to be efficient when removing all.
auto iter = base::ranges::find(base::Reversed(item_list_), overview_item,
&std::unique_ptr<OverviewItemBase>::get);
CHECK(iter != item_list_.rend());
UpdateNumSavedDeskUnsupportedWindows(overview_item->GetWindows(),
/*increment=*/false);
// Erase from the list first because deleting OverviewItem can lead to
// iterating through the `item_list_`.
std::unique_ptr<OverviewItemBase> tmp = std::move(*iter);
item_list_.erase(std::next(iter).base());
tmp.reset();
if (overview_session_)
overview_session_->UpdateFrameThrottling();
if (!item_destroying || !overview_session_) {
return;
}
if (empty()) {
overview_session_->OnGridEmpty();
return;
}
if (reposition) {
// Update the grid bounds if needed and reposition the windows minus the
// currently overview dragged window, if there is one. Note: this does not
// update the grid bounds if the window being dragged from the top or shelf,
// the former being handled in TabletModeWindowDragDelegate's destructor.
base::flat_set<OverviewItemBase*> ignored_items;
OverviewItemBase* dragged_item =
overview_session_->GetCurrentDraggedOverviewItem();
if (dragged_item)
ignored_items.insert(dragged_item);
const gfx::Rect grid_bounds = GetGridBoundsInScreen(
root_window_,
split_view_drag_indicators_
? std::make_optional(
split_view_drag_indicators_->current_window_dragging_state())
: std::nullopt,
/*account_for_hotseat=*/true);
SetBoundsAndUpdatePositions(grid_bounds, ignored_items, /*animate=*/true);
}
}
void OverviewGrid::RemoveAllItemsForSavedDeskLaunch() {
{
// Wait until the end to notify content changes for all desks.
Desk::ScopedContentUpdateNotificationDisabler desks_scoped_notify_disabler(
/*desks=*/DesksController::Get()->desks(),
/*notify_when_destroyed=*/true);
for (auto& item : item_list_) {
item->RevertHideForSavedDeskLibrary(/*animate=*/false);
item->RestoreWindow(/*reset_transform=*/true, /*animate=*/false);
}
}
// Destroying OverviewItemBase can call back into `this` and try to use
// `item_list_`; since the standard provides no guarantees about the
// internal state of a vector being cleared, swap it with an empty vector on
// the stack so that the destroyed items consistently see an empty vector.
{
decltype(item_list_) item_list;
item_list_.swap(item_list);
}
num_incognito_windows_ = 0;
num_unsupported_windows_ = 0;
EnableSaveDeskButtonContainer();
}
void OverviewGrid::AddDropTargetForDraggingFromThisGrid(
OverviewItemBase* dragged_item) {
const size_t position = GetOverviewItemIndex(dragged_item) + 1u;
AddDropTargetImpl(dragged_item, position, /*animate=*/false);
}
void OverviewGrid::AddDropTargetNotForDraggingFromThisGrid(
aura::Window* dragged_window,
bool animate) {
const size_t position = FindInsertionIndex(dragged_window);
AddDropTargetImpl(nullptr, position, /*animate=*/false);
if (!animate) {
return;
}
views::Widget* drop_target_widget = drop_target_->item_widget();
drop_target_widget->SetOpacity(0.f);
ScopedOverviewAnimationSettings settings(
OVERVIEW_ANIMATION_DROP_TARGET_FADE,
drop_target_widget->GetNativeWindow());
drop_target_widget->SetOpacity(1.f);
}
void OverviewGrid::RemoveDropTarget() {
CHECK(drop_target_);
// Copy to a local first to avoid a dangling pointer.
OverviewItemBase* drop_target_ptr = std::exchange(drop_target_, nullptr);
size_t erased_count = std::erase_if(
item_list_, base::MatchesUniquePtr<OverviewItemBase>(drop_target_ptr));
CHECK_EQ(1u, erased_count);
// Skip repositioning here. The caller is expected to call `PositionWindows()`
// after more drag-ending cleanup in `OverviewWindowDragController`.
}
void OverviewGrid::SetBoundsAndUpdatePositions(
const gfx::Rect& bounds_in_screen,
const base::flat_set<OverviewItemBase*>& ignored_items,
bool animate) {
const bool bounds_updated = bounds_in_screen != bounds_;
bounds_ = bounds_in_screen;
MaybeUpdateDesksWidgetBounds();
MaybeUpdateBirchBarWidgetBounds();
if (scoped_overview_wallpaper_clipper_) {
scoped_overview_wallpaper_clipper_->RefreshWallpaperClipBounds(
ScopedOverviewWallpaperClipper::AnimationType::kNone,
base::DoNothing());
}
PositionWindows(animate, ignored_items);
if (bounds_updated && saved_desk_library_widget_)
saved_desk_library_widget_->SetBounds(GetGridEffectiveBounds());
}
void OverviewGrid::RearrangeDuringDrag(
OverviewItemBase* dragged_item,
SplitViewDragIndicators::WindowDraggingState window_dragging_state) {
// Update the drop target visibility according to `window_dragging_state`.
if (drop_target_) {
views::Widget* drop_target_widget = drop_target_->item_widget();
ScopedOverviewAnimationSettings settings(
OVERVIEW_ANIMATION_DROP_TARGET_FADE,
drop_target_widget->GetNativeWindow());
drop_target_widget->SetOpacity(
GetWantedDropTargetOpacity(window_dragging_state));
}
// Update the grid's bounds.
const gfx::Rect wanted_grid_bounds = GetGridBoundsInScreen(
root_window_, std::make_optional(window_dragging_state),
/*account_for_hotseat=*/true);
if (bounds_ != wanted_grid_bounds) {
base::flat_set<OverviewItemBase*> ignored_items;
if (dragged_item)
ignored_items.insert(dragged_item);
SetBoundsAndUpdatePositions(wanted_grid_bounds, ignored_items,
/*animate=*/true);
}
}
void OverviewGrid::SetSplitViewDragIndicatorsDraggedWindow(
aura::Window* dragged_window) {
if (split_view_drag_indicators_) {
split_view_drag_indicators_->SetDraggedWindow(dragged_window);
}
}
void OverviewGrid::SetSplitViewDragIndicatorsWindowDraggingState(
SplitViewDragIndicators::WindowDraggingState window_dragging_state) {
if (split_view_drag_indicators_) {
split_view_drag_indicators_->SetWindowDraggingState(window_dragging_state);
}
}
bool OverviewGrid::MaybeUpdateDesksWidgetBounds() {
if (!desks_widget_)
return false;
const gfx::Rect desks_widget_bounds = GetDesksWidgetBounds();
if (desks_widget_bounds != desks_widget_->GetWindowBoundsInScreen()) {
// Note that the desks widget window is placed on the active desk container,
// which has the kUsesScreenCoordinatesKey property set to true, and hence
// we use the screen coordinates when positioning the desks widget.
//
// On certain display zooms, the requested |desks_widget_bounds| may differ
// than the current screen bounds of the desks widget by 1dp, but internally
// it will end up being the same and therefore a layout may not be
// triggered. This can cause mini views not to show up at all. We must
// guarantee that a layout will always occur by invalidating the layout.
// See crbug.com/1056371 for more details.
desks_bar_view_->InvalidateLayout();
desks_widget_->SetBounds(desks_widget_bounds);
if (scoped_overview_wallpaper_clipper_) {
scoped_overview_wallpaper_clipper_->RefreshWallpaperClipBounds(
ScopedOverviewWallpaperClipper::AnimationType::kNone,
base::DoNothing());
}
return true;
}
return false;
}
bool OverviewGrid::MaybeUpdateBirchBarWidgetBounds() {
if (!birch_bar_widget_) {
return false;
}
const gfx::Rect birch_bar_widget_bounds = GetBirchBarWidgetBounds();
if (birch_bar_widget_bounds != birch_bar_widget_->GetWindowBoundsInScreen()) {
birch_bar_widget_->SetBounds(birch_bar_widget_bounds);
return true;
}
return false;
}
void OverviewGrid::UpdateDropTargetBackgroundVisibility(
OverviewItemBase* dragged_item,
const gfx::PointF& location_in_screen) {
CHECK(drop_target_);
drop_target_->UpdateBackgroundVisibility(
gfx::ToRoundedPoint(location_in_screen));
}
void OverviewGrid::OnOverviewItemDragStarted() {
CommitNameChanges();
for (auto& item : item_list_) {
item->OnOverviewItemDragStarted();
}
}
void OverviewGrid::OnOverviewItemDragEnded(bool snap) {
for (auto& item : item_list_) {
item->OnOverviewItemDragEnded(snap);
}
}
void OverviewGrid::OnWindowDragStarted(aura::Window* dragged_window,
bool animate) {
dragged_window_ = dragged_window;
AddDropTargetNotForDraggingFromThisGrid(dragged_window, animate);
// Stack the |dragged_window| at top during drag.
dragged_window->parent()->StackChildAtTop(dragged_window);
// Called to set caption and title visibility during dragging.
OnOverviewItemDragStarted();
}
void OverviewGrid::OnWindowDragContinued(
aura::Window* dragged_window,
const gfx::PointF& location_in_screen,
SplitViewDragIndicators::WindowDraggingState window_dragging_state) {
DCHECK_EQ(dragged_window_, dragged_window);
DCHECK_EQ(dragged_window->GetRootWindow(), root_window_);
RearrangeDuringDrag(nullptr, window_dragging_state);
UpdateDropTargetBackgroundVisibility(nullptr, location_in_screen);
}
void OverviewGrid::OnWindowDragEnded(aura::Window* dragged_window,
const gfx::PointF& location_in_screen,
bool should_drop_window_into_overview,
bool snap) {
DCHECK_EQ(dragged_window_, dragged_window);
DCHECK_EQ(dragged_window->GetRootWindow(), root_window_);
CHECK(drop_target_);
dragged_window_ = nullptr;
// Add the dragged window into drop target in overview if
// |should_drop_window_into_overview| is true.
if (should_drop_window_into_overview) {
AddDraggedWindowIntoOverviewOnDragEnd(dragged_window);
}
RemoveDropTarget();
// Called to reset caption and title visibility after dragging.
OnOverviewItemDragEnded(snap);
// Update the grid bounds and reposition windows. Since the grid bounds might
// be updated based on the preview area during drag, but the window finally
// didn't be snapped to the preview area.
RefreshGridBounds(/*animate=*/true);
}
void OverviewGrid::MergeWindowIntoOverviewForWebUITabStrip(
aura::Window* dragged_window) {
AddDraggedWindowIntoOverviewOnDragEnd(dragged_window);
RefreshGridBounds(/*animate=*/true);
}
void OverviewGrid::SetVisibleDuringWindowDragging(bool visible, bool animate) {
for (const auto& overview_item : item_list_) {
overview_item->SetVisibleDuringItemDragging(visible, animate);
}
// Update |desks_widget_|.
if (desks_widget_) {
ui::Layer* layer = desks_widget_->GetNativeWindow()->layer();
float new_opacity = visible ? 1.f : 0.f;
if (layer->GetTargetOpacity() == new_opacity)
return;
if (animate) {
ScopedOverviewAnimationSettings settings(
OVERVIEW_ANIMATION_OPACITY_ON_WINDOW_DRAG,
desks_widget_->GetNativeWindow());
layer->SetOpacity(new_opacity);
} else {
layer->SetOpacity(new_opacity);
}
}
}
void OverviewGrid::OnDisplayMetricsChanged(uint32_t changed_metrics) {
if (split_view_drag_indicators_)
split_view_drag_indicators_->OnDisplayBoundsChanged();
UpdateCannotSnapWarningVisibility(/*animate=*/true);
// The `InformedRestoreContentsView` may need to be updated to match the
// primary display orientation. If the pine widget exists, then this overview
// grid is on the primary display, so we can tell the contents view to update
// on rotation.
if (informed_restore_widget_ &&
(changed_metrics & display::DisplayObserver::DISPLAY_METRIC_ROTATION)) {
views::AsViewClass<InformedRestoreContentsView>(
informed_restore_widget_->GetContentsView())
->UpdateOrientation();
}
// In case of split view mode, the grid bounds and item positions will be
// updated in |OnSplitViewDividerPositionChanged|.
if (SplitViewController::Get(root_window_)->InSplitViewMode())
return;
RefreshGridBounds(/*animate=*/false);
}
void OverviewGrid::OnUserWorkAreaInsetsChanged(aura::Window* root_window) {
DCHECK_EQ(root_window, root_window_);
if (!desks_widget_ && !birch_bar_widget_) {
return;
}
RefreshGridBounds(/*animate=*/false);
}
void OverviewGrid::OnStartingAnimationComplete(bool canceled) {
metrics_tracker_.reset();
if (canceled)
return;
if (ShouldInitDesksWidget()) {
auto presentation_time_recorder = CreatePresentationTimeHistogramRecorder(
root_window_->layer()->GetCompositor(),
kOverviewDelayedDeskBarPresentationHistogram, "",
kDeskBarEnterExitPresentationMaxLatency);
presentation_time_recorder->RequestNext();
MaybeInitDesksWidget();
}
MaybeInitBirchBarWidget();
UpdateSaveDeskButtons();
for (auto& item : item_list()) {
item->OnStartingAnimationComplete();
}
}
void OverviewGrid::CalculateWindowListAnimationStates(
OverviewItemBase* selected_item,
OverviewTransition transition,
const std::vector<gfx::RectF>& target_bounds) {
// Checks to enforce assumptions used in later codes.
switch (transition) {
case OverviewTransition::kEnter:
CHECK_EQ(target_bounds.size(), item_list_.size());
break;
case OverviewTransition::kExit:
CHECK(target_bounds.empty());
break;
case OverviewTransition::kInOverview:
NOTREACHED();
}
// On top items are items that are higher up on the z-order, or in the always
// on top or float containers.
auto is_on_top_item = [](OverviewItemBase* item) -> bool {
CHECK(item);
if (item->GetWindow()->GetProperty(aura::client::kZOrderingKey) !=
ui::ZOrderLevel::kNormal) {
return true;
}
aura::Window* parent = item->GetWindow()->parent();
aura::Window* root = parent->GetRootWindow();
return parent == root->GetChildById(kShellWindowId_AlwaysOnTopContainer) ||
parent == root->GetChildById(kShellWindowId_FloatContainer);
};
// Create a copy of `item_list_` which has the selected item and on top
// windows in the front.
std::vector<OverviewItemBase*> on_top_items;
std::vector<OverviewItemBase*> regular_items;
for (const std::unique_ptr<OverviewItemBase>& item : item_list_) {
OverviewItemBase* item_ptr = item.get();
CHECK(item_ptr);
// Skip the selected item; it will be inserted into the front. Skip the drop
// target, it is translucent and doesn't factor into any of these
// calculations.
if (item_ptr == selected_item || item_ptr == drop_target_) {
continue;
}
if (is_on_top_item(item_ptr))
on_top_items.push_back(item_ptr);
else
regular_items.push_back(item_ptr);
}
// Construct `items` so they are ordered like so.
// 1) Selected window which is on top.
// 2) On top windows.
// 3) Selected window which is not on top.
// 4) Regular window.
// Windows in the same group maintain their ordering from `window_list`.
std::vector<OverviewItemBase*> items;
if (selected_item && is_on_top_item(selected_item))
items.insert(items.begin(), selected_item);
items.insert(items.end(), on_top_items.begin(), on_top_items.end());
if (selected_item && !is_on_top_item(selected_item))
items.insert(items.end(), selected_item);
items.insert(items.end(), regular_items.begin(), regular_items.end());
SkRegion occluded_region;
auto* split_view_controller = SplitViewController::Get(root_window_);
if (split_view_controller->InSplitViewMode()) {
// Snapped windows and the split view divider are not included in
// `target_bounds` or `item_list_`, but can occlude other windows, so add
// them manually to `region` here.
SkIRect snapped_window_bounds = gfx::RectToSkIRect(
split_view_controller->GetDefaultSnappedWindow()->GetBoundsInScreen());
occluded_region.op(snapped_window_bounds, SkRegion::kUnion_Op);
if (auto* divider_widget =
split_view_controller->split_view_divider()->divider_widget()) {
aura::Window* divider_window = divider_widget->GetNativeWindow();
SkIRect divider_bounds =
gfx::RectToSkIRect(divider_window->GetBoundsInScreen());
occluded_region.op(divider_bounds, SkRegion::kUnion_Op);
}
}
// TODO(sammiequon): Investigate the bounds used here and if we need to
// consider tucked windows.
gfx::Rect grid_bounds = GetGridEffectiveBounds();
for (size_t i = 0; i < items.size(); ++i) {
const bool minimized =
WindowState::Get(items[i]->GetWindow())->IsMinimized();
bool src_occluded = minimized;
bool dst_occluded = false;
gfx::Rect src_bounds_temp =
minimized ? gfx::Rect()
: items[i]->GetWindow()->GetBoundsInRootWindow();
if (!src_bounds_temp.IsEmpty()) {
if (transition == OverviewTransition::kEnter &&
display::Screen::GetScreen()->InTabletMode()) {
BackdropController* backdrop_controller =
GetActiveWorkspaceController(root_window_)
->layout_manager()
->backdrop_controller();
if (backdrop_controller->GetTopmostWindowWithBackdrop() ==
items[i]->GetWindow()) {
src_bounds_temp = screen_util::GetDisplayWorkAreaBoundsInParent(
items[i]->GetWindow());
}
} else if (transition == OverviewTransition::kExit) {
// On exiting overview, |GetBoundsInRootWindow()| will have the overview
// translation applied to it, so use |bounds()| and
// |ConvertRectToScreen()| to get the true target bounds.
src_bounds_temp = items[i]->GetWindow()->bounds();
wm::ConvertRectToScreen(items[i]->root_window(), &src_bounds_temp);
}
src_bounds_temp.Intersect(grid_bounds);
}
// The bounds of of the destination may be partially or fully offscreen.
// Partially offscreen rects should be clipped so the onscreen portion is
// treated normally. Fully offscreen rects (intersection with the screen
// bounds is empty) should never be animated.
gfx::Rect dst_bounds_temp = gfx::ToEnclosedRect(
transition == OverviewTransition::kEnter ? target_bounds[i]
: items[i]->target_bounds());
dst_bounds_temp.Intersect(grid_bounds);
if (dst_bounds_temp.IsEmpty()) {
items[i]->set_should_animate_when_entering(false);
items[i]->set_should_animate_when_exiting(false);
continue;
}
SkIRect src_bounds = gfx::RectToSkIRect(src_bounds_temp);
SkIRect dst_bounds = gfx::RectToSkIRect(dst_bounds_temp);
if (!occluded_region.isEmpty()) {
src_occluded |=
(!src_bounds.isEmpty() && occluded_region.contains(src_bounds));
dst_occluded |= occluded_region.contains(dst_bounds);
}
// Add |src_bounds| to our region if it is not empty (minimized window).
if (!src_bounds.isEmpty())
occluded_region.op(src_bounds, SkRegion::kUnion_Op);
const bool should_animate = !(src_occluded && dst_occluded);
if (transition == OverviewTransition::kEnter)
items[i]->set_should_animate_when_entering(should_animate);
else if (transition == OverviewTransition::kExit)
items[i]->set_should_animate_when_exiting(should_animate);
}
}
void OverviewGrid::SetWindowListNotAnimatedWhenExiting() {
should_animate_when_exiting_ = false;
for (const auto& item : item_list_) {
item->set_should_animate_when_exiting(false);
}
}
void OverviewGrid::StartNudge(OverviewItemBase* item) {
// When there is one window left, there is no need to nudge.
if (item_list_.size() <= 1) {
nudge_data_.clear();
return;
}
// If any of the items are being animated to close, do not nudge any windows
// otherwise we have to deal with potential items getting removed from
// |item_list_| midway through a nudge.
for (const auto& overview_item : item_list_) {
if (overview_item->animating_to_close()) {
nudge_data_.clear();
return;
}
}
DCHECK(item);
// Get the bounds of the items currently, and the bounds if `item` were to be
// removed.
std::vector<gfx::RectF> src_rects;
for (const auto& overview_item : item_list_) {
src_rects.push_back(overview_item->target_bounds());
}
std::vector<gfx::RectF> dst_rects = GetWindowRects({item});
const size_t index = GetOverviewItemIndex(item);
// Returns a vector of integers indicating which row the item is in. |index|
// is the index of the element which is going to be deleted and should not
// factor into calculations. The call site should mark |index| as -1 if it
// should not be used. The item at |index| is marked with a 0. The heights of
// items are all set to the same value so a new row is determined if the y
// value has changed from the previous item.
auto get_rows = [](const std::vector<gfx::RectF>& bounds_list, size_t index) {
std::vector<int> row_numbers;
int current_row = 1;
float last_y = 0;
for (size_t i = 0; i < bounds_list.size(); ++i) {
if (i == index) {
row_numbers.push_back(0);
continue;
}
// Update |current_row| if the y position has changed (heights are all
// equal in overview, so a new y position indicates a new row).
if (last_y != 0 && last_y != bounds_list[i].y())
++current_row;
row_numbers.push_back(current_row);
last_y = bounds_list[i].y();
}
return row_numbers;
};
std::vector<int> src_rows = get_rows(src_rects, -1);
std::vector<int> dst_rows = get_rows(dst_rects, index);
// Do nothing if the number of rows change.
if (dst_rows.back() != 0 && src_rows.back() != dst_rows.back())
return;
size_t second_last_index = src_rows.size() - 2;
if (dst_rows.back() == 0 &&
src_rows[second_last_index] != dst_rows[second_last_index]) {
return;
}
// Do nothing if the last item from the previous row will drop onto the
// current row, this will cause the items in the current row to shift to the
// right while the previous item stays in the previous row, which looks weird.
if (src_rows[index] > 1) {
// Find the last item from the previous row.
size_t previous_row_last_index = index;
while (src_rows[previous_row_last_index] == src_rows[index]) {
--previous_row_last_index;
}
// Early return if the last item in the previous row changes rows.
if (src_rows[previous_row_last_index] != dst_rows[previous_row_last_index])
return;
}
// Helper to check whether the item at |item_index| will be nudged.
auto should_nudge = [&src_rows, &dst_rows, &index](size_t item_index) {
// Out of bounds.
if (item_index >= src_rows.size())
return false;
// Nudging happens when the item stays on the same row and is also on the
// same row as the item to be deleted was.
if (dst_rows[item_index] == src_rows[index] &&
dst_rows[item_index] == src_rows[item_index]) {
return true;
}
return false;
};
// Starting from |index| go up and down while the nudge condition returns
// true.
std::vector<int> affected_indexes;
size_t loop_index;
if (index > 0) {
loop_index = index - 1;
while (should_nudge(loop_index)) {
affected_indexes.push_back(loop_index);
--loop_index;
}
}
loop_index = index + 1;
while (should_nudge(loop_index)) {
affected_indexes.push_back(loop_index);
++loop_index;
}
// Populate |nudge_data_| with the indexes in |affected_indexes| and their
// respective source and destination bounds.
nudge_data_.resize(affected_indexes.size());
for (size_t i = 0; i < affected_indexes.size(); ++i) {
const size_t new_index = static_cast<size_t>(affected_indexes[i]);
nudge_data_[i] = {.index = new_index,
.src = src_rects[new_index],
.dst = dst_rects[new_index]};
}
}
void OverviewGrid::UpdateNudge(OverviewItemBase* item, double value) {
for (const OverviewNudgeData& data : nudge_data_) {
CHECK_LT(data.index, item_list_.size());
OverviewItemBase* nudged_item = item_list_[data.index].get();
double nudge_param = value * value / 30.0;
nudge_param = std::clamp(nudge_param, 0.0, 1.0);
gfx::RectF bounds =
gfx::Tween::RectFValueBetween(nudge_param, data.src, data.dst);
nudged_item->SetBounds(bounds, OVERVIEW_ANIMATION_NONE);
}
}
void OverviewGrid::EndNudge() {
nudge_data_.clear();
}
aura::Window* OverviewGrid::GetTargetWindowOnLocation(
const gfx::PointF& location_in_screen,
OverviewItemBase* ignored_item) {
for (std::unique_ptr<OverviewItemBase>& item : item_list_) {
if (item.get() == ignored_item)
continue;
if (item->target_bounds().Contains(location_in_screen))
return item->GetWindow();
}
return nullptr;
}
bool OverviewGrid::IsDesksBarViewActive() const {
DCHECK(desks_util::ShouldDesksBarBeCreated());
// The desk bar view is not active if there is only a single desk when
// overview is started. Or when the desks bar view has been created and in
// zero state.
return DesksController::Get()->desks().size() > 1 ||
(desks_bar_view_ && !desks_bar_view_->IsZeroState());
}
gfx::Rect OverviewGrid::GetGridEffectiveBounds() const {
gfx::Rect effective_bounds = bounds_;
effective_bounds.Inset(GetGridHorizontalPaddings());
effective_bounds.Inset(GetGridVerticalPaddings());
return effective_bounds;
}
gfx::Insets OverviewGrid::GetGridHorizontalPaddings() const {
if (!features::IsForestFeatureEnabled()) {
return gfx::Insets();
}
// Use compact paddings for partial overview.
if (SplitViewController::Get(root_window_)->InSplitViewMode()) {
return gfx::Insets::VH(0, kCompactPaddingForEffectiveBounds);
}
// Use spacious padding for tablet mode.
if (InTabletMode()) {
return gfx::Insets::VH(0, kSpaciousPaddingForEffectiveBounds);
}
gfx::Insets horizontal_paddings;
// Use compact padding for the side with shelf and spacious padding
// otherwise.
const auto* shelf = Shelf::ForWindow(root_window_);
horizontal_paddings.set_left(shelf->SelectValueForShelfAlignment(
/*bottom=*/kSpaciousPaddingForEffectiveBounds,
/*left=*/kCompactPaddingForEffectiveBounds,
/*right=*/kSpaciousPaddingForEffectiveBounds));
horizontal_paddings.set_right(shelf->SelectValueForShelfAlignment(
/*bottom=*/kSpaciousPaddingForEffectiveBounds,
/*left=*/kSpaciousPaddingForEffectiveBounds,
/*right=*/kCompactPaddingForEffectiveBounds));
return horizontal_paddings;
}
gfx::Insets OverviewGrid::GetGridVerticalPaddings() const {
const bool forest_enabled = features::IsForestFeatureEnabled();
// Use compact paddings for partial overview.
if (forest_enabled &&
SplitViewController::Get(root_window_)->InSplitViewMode()) {
return gfx::Insets::VH(kCompactPaddingForEffectiveBounds, 0);
}
gfx::Insets vertical_paddings;
// Calculate the top padding according to the existence of desk bar.
// There's an edge case where is in tablet mode, there're more than one desk,
// after entering overview mode, deleting desks to just keep one, even though
// there's only one desk now in tablet mode, the desks bar will stay. That's
// why we need to check the existence of `desks_bar_view_` here.
const bool has_desk_bar =
desks_bar_view_ || desks_util::ShouldDesksBarBeCreated();
const int no_desk_bar_padding =
forest_enabled ? kSpaciousPaddingForEffectiveBounds : 0;
vertical_paddings.set_top(has_desk_bar ? GetDesksBarHeight()
: no_desk_bar_padding);
if (!forest_enabled) {
return vertical_paddings;
}
// Calculate the bottom padding according to the existence of birch bar,
// shelf, and home launcher.
if (birch_bar_view_) {
// If birch bar exists, add compact padding with the maximum birch bar
// height and birch bar bottom padding to the bottom.
vertical_paddings.set_bottom(GetBirchBarBottomPadding(root_window_) +
birch_bar_view_->GetMaximumHeight() +
kCompactPaddingForEffectiveBounds);
return vertical_paddings;
}
auto* shelf = Shelf::ForWindow(root_window_);
if (InTabletMode()) {
// Use compact padding for home launcher and spacious padding otherwise.
vertical_paddings.set_bottom(
shelf->shelf_layout_manager()->hotseat_state() ==
HotseatState::kShownHomeLauncher
? kCompactPaddingForEffectiveBounds
: kSpaciousPaddingForEffectiveBounds);
return vertical_paddings;
}
// Otherwise, if there is a bottom shelf, use compact padding and spacious
// padding otherwise.
vertical_paddings.set_bottom(shelf->SelectValueForShelfAlignment(
/*bottom=*/kCompactPaddingForEffectiveBounds,
/*left=*/kSpaciousPaddingForEffectiveBounds,
/*right=*/kSpaciousPaddingForEffectiveBounds));
return vertical_paddings;
}
gfx::Insets OverviewGrid::GetGridInsets() const {
return GetGridInsetsImpl(GetGridEffectiveBounds());
}
bool OverviewGrid::IntersectsWithDesksBar(const gfx::Point& screen_location,
bool update_desks_bar_drag_details,
bool for_drop) {
DCHECK(desks_util::ShouldDesksBarBeCreated());
const bool dragged_item_over_bar =
desks_widget_->GetWindowBoundsInScreen().Contains(screen_location);
if (update_desks_bar_drag_details) {
desks_bar_view_->SetDragDetails(screen_location,
!for_drop && dragged_item_over_bar);
}
return dragged_item_over_bar;
}
bool OverviewGrid::MaybeDropItemOnDeskMiniViewOrNewDeskButton(
const gfx::Point& screen_location,
OverviewItemBase* dragged_item) {
CHECK(desks_util::ShouldDesksBarBeCreated());
const bool has_windows_visible_on_all_desks =
dragged_item->HasVisibleOnAllDesksWindow();
// End the drag for the OverviewDeskBarView.
if (!IntersectsWithDesksBar(screen_location,
/*update_desks_bar_drag_details=*/
!has_windows_visible_on_all_desks,
/*for_drop=*/true)) {
return false;
}
if (has_windows_visible_on_all_desks) {
// Show toast since items that are visible on all desks should not be able
// to be unassigned during overview.
// TODO(b/306034162): Consider updating the string for the toast with the
// existence of group item.
Shell::Get()->toast_manager()->Show(
ToastData(kMoveVisibleOnAllDesksWindowToastId,
ToastCatalogName::kMoveVisibleOnAllDesksWindow,
l10n_util::GetStringUTF16(
IDS_ASH_OVERVIEW_VISIBLE_ON_ALL_DESKS_TOAST)));
return false;
}
auto* desks_controller = DesksController::Get();
for (DeskMiniView* mini_view : desks_bar_view_->mini_views()) {
if (!mini_view->IsPointOnMiniView(screen_location))
continue;
Desk* const target_desk = mini_view->desk();
if (target_desk == desks_controller->active_desk())
return false;
// Make sure that new desk button goes back to the expanded state after
// the window is dropped on an existing desk.
desks_bar_view_->UpdateDeskIconButtonState(
desks_bar_view_->new_desk_button(),
/*target_state=*/DeskIconButton::State::kExpanded);
return desks_controller->MoveWindowFromActiveDeskTo(
dragged_item->GetWindow(), target_desk, root_window_,
DesksMoveWindowFromActiveDeskSource::kDragAndDrop);
}
if (!desks_controller->CanCreateDesks()) {
return false;
}
if (!desks_bar_view_->new_desk_button()->IsPointOnButton(screen_location)) {
return false;
}
desks_bar_view_->OnNewDeskButtonPressed(
DesksCreationRemovalSource::kDragToNewDeskButton);
auto* target_desk = desks_controller->desks().back().get();
// When creating a new desk by by dragging and dropping a lacros browser
// window to new desk button, set the desk's default profile based on the
// profile lacros window is logged into.
const auto windows = dragged_item->GetWindows();
if (chromeos::features::IsDeskProfilesEnabled() && windows.size() == 1) {
if (auto lacros_profile_id = windows[0]->GetProperty(kLacrosProfileId);
lacros_profile_id != 0) {
target_desk->SetLacrosProfileId(
lacros_profile_id,
DeskProfilesSelectProfileSource::kNewDeskButtonDrop);
}
}
return desks_controller->MoveWindowFromActiveDeskTo(
dragged_item->GetWindow(), target_desk, root_window_,
DesksMoveWindowFromActiveDeskSource::kDragAndDrop);
}
void OverviewGrid::StartScroll() {
scroll_pauser_ = OverviewController::Get()->PauseOcclusionTracker(
kOcclusionUnpauseDurationForScroll);
// Users are not allowed to scroll past the leftmost or rightmost bounds of
// the items on screen in the grid. |scroll_offset_min_| is the amount needed
// to fit the rightmost window into |total_bounds|. The max is zero which is
// default because windows are aligned to the left from the beginning.
gfx::Rect total_bounds = GetGridEffectiveBounds();
total_bounds.Inset(GetGridInsetsImpl(total_bounds));
float rightmost_window_right = 0;
for (const auto& item : item_list_) {
const gfx::RectF bounds = item->target_bounds();
if (rightmost_window_right < bounds.right()) {
rightmost_window_right = bounds.right();
}
item->set_scrolling_bounds(bounds);
}
// |rightmost_window_right| may have been modified by an earlier scroll.
// |scroll_offset_| is added to adjust for that.
rightmost_window_right -= scroll_offset_;
scroll_offset_min_ = total_bounds.right() - rightmost_window_right;
if (scroll_offset_min_ > 0.f)
scroll_offset_min_ = 0.f;
presentation_time_recorder_ = CreatePresentationTimeHistogramRecorder(
const_cast<ui::Compositor*>(root_window()->layer()->GetCompositor()),
kOverviewScrollHistogram, kOverviewScrollMaxLatencyHistogram);
}
bool OverviewGrid::UpdateScrollOffset(float delta) {
float new_scroll_offset = scroll_offset_;
new_scroll_offset += delta;
new_scroll_offset = std::clamp(new_scroll_offset, scroll_offset_min_, 0.f);
// For flings, we want to return false if we hit one of the edges, which is
// when |new_scroll_offset| is exactly 0.f or |scroll_offset_min_|.
const bool in_range =
new_scroll_offset < 0.f && new_scroll_offset > scroll_offset_min_;
if (new_scroll_offset == scroll_offset_)
return in_range;
// Update the bounds of the items which are currently visible on screen.
for (const auto& item : item_list_) {
std::optional<gfx::RectF> scrolling_bounds_optional =
item->scrolling_bounds();
// Scrolling bounds may not be set if the item was added after scrolling
// started (i.e. another desk was combined into the active desk).
if (!scrolling_bounds_optional) {
continue;
}
const gfx::RectF previous_bounds = scrolling_bounds_optional.value();
gfx::RectF new_bounds = previous_bounds;
new_bounds.Offset(new_scroll_offset - scroll_offset_, 0.f);
item->set_scrolling_bounds(new_bounds);
if (gfx::RectF(GetGridEffectiveBounds()).Intersects(new_bounds) ||
gfx::RectF(GetGridEffectiveBounds()).Intersects(previous_bounds)) {
item->SetBounds(new_bounds, OVERVIEW_ANIMATION_NONE);
}
}
scroll_offset_ = new_scroll_offset;
DCHECK(presentation_time_recorder_);
presentation_time_recorder_->RequestNext();
return in_range;
}
void OverviewGrid::EndScroll() {
scroll_pauser_.reset();
for (const auto& item : item_list_) {
item->set_scrolling_bounds(std::nullopt);
}
presentation_time_recorder_.reset();
if (!overview_session_->is_shutting_down())
PositionWindows(/*animate=*/false);
}
int OverviewGrid::CalculateWidthAndMaybeSetUnclippedBounds(
OverviewItemBase* item,
int height) {
gfx::SizeF target_size = item->GetWindowsUnionScreenBounds().size();
float scale = item->GetItemScale(height);
OverviewItemFillMode item_fill_mode = item->GetOverviewItemFillMode();
// The drop target, unlike the other windows has its bounds set directly, so
// `GetWindowsUnionScreenBounds()` won't return the value we want. Instead,
// get the scale from the window(s) it was meant to be a placeholder for.
if (drop_target_ == item) {
auto* window_drag_controller = overview_session_->window_drag_controller();
OverviewItemBase* grid_dragged_item =
window_drag_controller ? window_drag_controller->item() : nullptr;
aura::Window::Windows dragged_windows =
GetWindowsAssociatedWithDragging(grid_dragged_item, dragged_window_);
if (AreDraggedWindowsValid(dragged_windows)) {
const gfx::Size work_area_size =
screen_util::GetDisplayWorkAreaBoundsInScreenForActiveDeskContainer(
root_window_)
.size();
if (AreAllWindowsMaximized(dragged_windows)) {
// When dragging a maximized window across displays, when dragging over
// this grid, the drop target size should reflect the maximized window
// size on this grid's display (i.e. this display's work area size)
// which can be different than the source display's work area size.
item_fill_mode = GetOverviewItemFillMode(work_area_size);
target_size = gfx::SizeF(work_area_size);
} else {
// If the drag started from a different root window, `dragged_windows`
// may not fit into the work area of `root_window_`. Then if the
// `dragged_windows` is dropped into this grid, `dragged_windows` will
// shrink to fit into this work area. The drop target shall reflect
// that.
gfx::Size dragged_item_size =
GetTotalDraggedWindowsSize(dragged_windows);
dragged_item_size.SetToMin(work_area_size);
item_fill_mode = GetOverviewItemFillMode(dragged_item_size);
target_size = GetTotalUnionSizeIncludingTransients(dragged_windows);
target_size.SetToMin(gfx::SizeF(work_area_size));
}
scale = ScopedOverviewTransformWindow::GetItemScale(
target_size.height(), height, GetTopViewInset(dragged_windows),
kWindowMiniViewHeaderHeight);
}
}
int width = std::max(1, base::ClampFloor(target_size.width() * scale));
switch (item_fill_mode) {
case OverviewItemFillMode::kLetterBoxed:
width = kExtremeWindowRatioThreshold * height;
break;
case OverviewItemFillMode::kPillarBoxed:
width = height / kExtremeWindowRatioThreshold;
break;
default:
break;
}
if (drop_target_ == item) {
return width;
}
// Get the bounds of the item if there is a snapped window or a window
// about to be snapped. If the height is less than that of the header, there
// is nothing from the original window to be shown and nothing to be clipped.
// Floated windows doesn't need this special handling (see b/323136574).
auto* window = item->GetWindow();
const bool is_floated = WindowState::Get(window)->IsFloated();
std::optional<gfx::RectF> split_view_bounds =
GetSplitviewBoundsMaintainingAspectRatio();
if (is_floated || !split_view_bounds ||
split_view_bounds->height() < kWindowMiniViewHeaderHeight) {
item->set_unclipped_size(std::nullopt);
return width;
}
// Perform horizontal clipping if the window's aspect ratio is wider than the
// split view bounds aspect ratio, and vertical clipping otherwise.
const float aspect_ratio =
target_size.width() /
(target_size.height() - window->GetProperty(aura::client::kTopViewInset));
const float target_aspect_ratio =
static_cast<float>(split_view_bounds->width()) /
split_view_bounds->height();
const bool clip_horizontally = aspect_ratio > target_aspect_ratio;
const int window_height = height - kWindowMiniViewHeaderHeight;
gfx::Size unclipped_size;
if (clip_horizontally) {
unclipped_size.set_width(width);
unclipped_size.set_height(height);
// For horizontal clipping, shrink |width| so that the aspect ratio matches
// that of |split_view_bounds|.
width = std::max(1, base::ClampFloor(target_aspect_ratio * window_height));
} else {
// For vertical clipping, we want |height| to stay the same, so calculate
// what the unclipped height would be based on |split_view_bounds|.
// Find the width so that it matches height and matches the aspect ratio of
// |split_view_bounds|.
// TODO(sammiequon): Check to see if we can unify this with the `width`
// calculation in the above branch where we do the clamp and the max.
width = target_aspect_ratio * window_height;
// The unclipped height is the height which matches |width| but keeps the
// aspect ratio of |target_bounds|. Clipping takes the overview header into
// account, so add that back in.
const int unclipped_height =
width * target_size.height() / target_size.width();
unclipped_size.set_width(width);
unclipped_size.set_height(unclipped_height + kWindowMiniViewHeaderHeight);
}
DCHECK(!unclipped_size.IsEmpty());
item->set_unclipped_size(std::make_optional(unclipped_size));
return width;
}
bool OverviewGrid::IsDeskNameBeingModified() const {
return desks_bar_view_ && desks_bar_view_->IsDeskNameBeingModified();
}
void OverviewGrid::CommitNameChanges() {
// The desks bar widget may not be ready, since it is created asynchronously
// later when the entering overview animations finish.
if (desks_widget_)
DeskNameView::CommitChanges(desks_widget_.get());
// The saved desk grid may not be shown.
if (saved_desk_library_widget_)
SavedDeskNameView::CommitChanges(saved_desk_library_widget_.get());
}
void OverviewGrid::ShowSavedDeskLibrary() {
if (!saved_desk_library_widget_) {
saved_desk_library_widget_ =
SavedDeskLibraryView::CreateSavedDeskLibraryWidget(root_window_);
// Compute bounds for the library using the expanded height of the desk
// bar. `GetGridEffectiveBounds` will not be the correct bounds for the
// library if we are currently in the zero state mode.
gfx::Rect library_bounds = bounds_;
library_bounds.Inset(gfx::Insets::TLBR(
OverviewDeskBarView::GetPreferredBarHeight(
root_window_, OverviewDeskBarView::Type::kOverview,
OverviewDeskBarView::State::kExpanded),
0, 0, 0));
saved_desk_library_widget_->SetBounds(library_bounds);
}
{
// Wait until the end to notify content changes for all desks.
Desk::ScopedContentUpdateNotificationDisabler desks_scoped_notify_disabler(
/*desks=*/DesksController::Get()->desks(),
/*notify_when_destroyed=*/true);
for (auto& overview_item : item_list_) {
overview_item->HideForSavedDeskLibrary(/*animate=*/true);
}
}
// There may be an existing animation in progress triggered by
// `HideSavedDeskLibrary()` below, which animates a widget to 0.f before
// calling `OnSavedDeskGridFadedOut()` to hide the widget on animation end.
// Stop animating so that the callbacks associated get fired, otherwise we may
// end up trying to show a widget that's already shown. `StopAnimating()` is a
// no-op if there is no animation in progress.
saved_desk_library_widget_->GetLayer()->GetAnimator()->StopAnimating();
saved_desk_library_widget_->Show();
// Fade in the widget from its current opacity.
PerformFadeInLayer(saved_desk_library_widget_->GetLayer(), /*animate=*/true);
UpdateSaveDeskButtons();
// If the overview desk bar is not created at this point, create it. This is
// only possible for clicking library button on the desk button desk bar,
// since for the overview desk bar, there has to be a bar before we can click
// on the library button.
if (!desks_widget_) {
MaybeInitDesksWidget();
}
// When desks bar is at zero state, the library button's state update will be
// handled by `UpdateNewMiniViews` when expanding the desks bar.
if (desks_bar_view_->IsZeroState()) {
desks_bar_view_->UpdateNewMiniViews(/*initializing_bar_view=*/false,
/*expanding_bar_view=*/true);
} else {
desks_bar_view_->UpdateDeskIconButtonState(
desks_bar_view_->library_button(),
/*target_state=*/DeskIconButton::State::kActive);
}
desks_bar_view_->UpdateButtonsForSavedDeskGrid();
if (informed_restore_widget_) {
informed_restore_widget_->GetNativeWindow()->SetEventTargetingPolicy(
aura::EventTargetingPolicy::kNone);
PerformFadeOutLayer(informed_restore_widget_->GetLayer(), /*animate=*/true,
base::DoNothing());
}
}
void OverviewGrid::HideSavedDeskLibrary(bool exit_overview) {
if (!saved_desk_library_widget_)
return;
auto* grid_layer = saved_desk_library_widget_->GetLayer();
const bool already_hiding_grid = grid_layer->GetAnimator()->is_animating() &&
grid_layer->GetTargetOpacity() == 0.f;
if (already_hiding_grid)
return;
// Wait until the end to notify content changes for all desks.
Desk::ScopedContentUpdateNotificationDisabler desks_scoped_notify_disabler(
/*desks=*/DesksController::Get()->desks(),
/*notify_when_destroyed=*/true);
if (exit_overview && overview_session_->enter_exit_overview_type() ==
OverviewEnterExitType::kImmediateExit) {
// Since we're immediately exiting, we don't need to animate anything.
// Reshow the overview items and let the `saved_desk_library_widget_`
// handle its own destruction.
for (auto& overview_mode_item : item_list_) {
overview_mode_item->RevertHideForSavedDeskLibrary(/*animate=*/false);
}
return;
}
if (exit_overview) {
// Un-hide the overview mode items.
for (auto& overview_mode_item : item_list_) {
overview_mode_item->RevertHideForSavedDeskLibrary(/*animate=*/true);
}
// Disable the `saved_desk_library_widget_`'s event targeting so it can't
// get any events during the animation.
saved_desk_library_widget_->GetNativeWindow()->SetEventTargetingPolicy(
aura::EventTargetingPolicy::kNone);
FadeOutWidgetFromOverview(
std::move(saved_desk_library_widget_),
OVERVIEW_ANIMATION_EXIT_OVERVIEW_MODE_SAVED_DESK_GRID_FADE_OUT);
return;
}
// Fade out the `saved_desk_library_widget_` and then when its animation is
// done fade in the supporting widgets and revert the overview item hides.
PerformFadeOutLayer(saved_desk_library_widget_->GetLayer(),
/*animate=*/true,
base::BindOnce(&OverviewGrid::OnSavedDeskGridFadedOut,
weak_ptr_factory_.GetWeakPtr()));
// The saved desk library is hidden because of a new desk is created for
// saved desk. We have animation of adding a new desk for the library
// button, thus to avoid the animation glitches, directly update the state
// for the library button instead of applying the scale animation to it.
desks_bar_view_->library_button()->UpdateState(
DeskIconButton::State::kExpanded);
}
bool OverviewGrid::IsShowingSavedDeskLibrary() const {
return saved_desk_library_widget_ &&
saved_desk_library_widget_->IsVisible() &&
saved_desk_library_widget_->GetLayer()->GetTargetOpacity() == 1.0f;
}
bool OverviewGrid::IsSavedDeskNameBeingModified() const {
if (const SavedDeskLibraryView* library_view = GetSavedDeskLibraryView()) {
for (SavedDeskGridView* grid_view : library_view->grid_views()) {
if (grid_view->IsSavedDeskNameBeingModified()) {
return true;
}
}
}
return false;
}
void OverviewGrid::UpdateNoWindowsWidget(bool no_items,
bool animate,
bool is_continuous_enter) {
// `no_windows_widget_` will show in normal full overview, when there are no
// items and the saved desk library is not showing.
if (!no_items || IsShowingSavedDeskLibrary() ||
ShouldShowInformedRestoreDialog(root_window_)) {
no_windows_widget_.reset();
return;
}
if (!no_windows_widget_) {
// Create and fade in the widget.
RoundedLabelWidget::InitParams params;
params.name = "OverviewNoWindowsLabel";
params.horizontal_padding = kNoItemsIndicatorHorizontalPaddingDp;
params.vertical_padding = kNoItemsIndicatorVerticalPaddingDp;
params.rounding_dp = kNoItemsIndicatorRoundingDp;
params.preferred_height = kNoItemsIndicatorHeightDp;
params.message = IDS_ASH_OVERVIEW_NO_RECENT_ITEMS;
params.parent =
root_window_->GetChildById(desks_util::GetActiveDeskContainerId());
params.disable_default_visibility_animation = !animate;
no_windows_widget_ = std::make_unique<RoundedLabelWidget>();
no_windows_widget_->Init(std::move(params));
aura::Window* widget_window = no_windows_widget_->GetNativeWindow();
widget_window->parent()->StackChildAtBottom(widget_window);
ScopedOverviewAnimationSettings settings(
animate && !is_continuous_enter ? OVERVIEW_ANIMATION_NO_RECENTS_FADE
: OVERVIEW_ANIMATION_NONE,
widget_window);
// Start the opacity at zero for continuous enter. Its opacity will change
// with the trackpad events as they come.
no_windows_widget_->SetOpacity(is_continuous_enter ? 0.f : 1.f);
// When initializing the widget, no need to re-layout and animate again in
// `RoundedLabelWidget::SetBoundsCenteredIn()`.
animate = false;
}
const gfx::Rect grid_bounds(GetGridEffectiveBounds());
no_windows_widget_->SetBoundsCenteredIn(grid_bounds, animate);
}
void OverviewGrid::RefreshGridBounds(bool animate) {
SetBoundsAndUpdatePositions(GetGridBoundsInScreen(root_window_),
/*ignored_items=*/{}, animate);
if (informed_restore_widget_) {
auto* contents_view = views::AsViewClass<InformedRestoreContentsView>(
informed_restore_widget_->GetContentsView());
CHECK(contents_view);
contents_view->UpdatePrimaryContainerPreferredWidth(
root_window_, /*is_landscape=*/std::nullopt);
gfx::Rect pine_bounds = GetGridEffectiveBounds();
pine_bounds.ClampToCenteredSize(contents_view->GetPreferredSize());
informed_restore_widget_->SetBounds(pine_bounds);
}
if (scoped_overview_wallpaper_clipper_) {
scoped_overview_wallpaper_clipper_->RefreshWallpaperClipBounds(
ScopedOverviewWallpaperClipper::AnimationType::kNone,
base::DoNothing());
}
}
void OverviewGrid::UpdateSaveDeskButtons() {
// TODO(crbug.com/40207000): The button should be updated whenever the
// overview grid changes, i.e. switches between active desks and/or the
// saved desk grid. This will be needed when we make it so that switching
// desks keeps us in overview mode.
if (!saved_desk_util::ShouldShowSavedDesksOptions()) {
return;
}
// If there is only one item and it is animating to close, hide the widget as
// the closing window cannot be saved as part of a template.
// TODO(http://b/327639285): Also hide save desk context menu items if item is
// animating to close.
const bool no_items =
item_list_.empty() ||
(item_list_.size() == 1u && item_list_.front()->animating_to_close());
// Do not create or show the save desk buttons if there are no
// windows in this grid, during a window drag or in tablet mode, the saved
// desk grid is visible, if the desks bar hasn't been created yet, or if the
// feature ContinuousOverviewScrollAnimation is enabled and a continuous
// scroll is in progress.
const bool target_visible =
!no_items && !overview_session_->GetCurrentDraggedOverviewItem() &&
!display::Screen::GetScreen()->InTabletMode() &&
!IsShowingSavedDeskLibrary() && desks_widget_ &&
(!features::IsContinuousOverviewScrollAnimationEnabled() ||
!OverviewController::Get()->is_continuous_scroll_in_progress());
const bool visibility_changed =
target_visible != IsSaveDeskButtonContainerVisible();
// If the saved desk options (either the buttons or the menu options) are
// viable to be shown, then we want to record a histogram for holdback
// purposes.
if (target_visible && visibility_changed) {
if (features::IsSavedDeskUiRevampEnabled()) {
base::UmaHistogramBoolean(kShowSavedDeskButtonsRevampEnabledHistogramName,
true);
} else {
base::UmaHistogramBoolean(
kShowSavedDeskButtonsRevampDisabledHistogramName, true);
}
}
// If the UI revamp is enabled, we return as the buttons will not be shown.
if (features::IsSavedDeskUiRevampEnabled()) {
return;
}
// Adds or removes the widget from the accessibility focus order when exiting
// the scope. Skip the update if the widget's visibility hasn't changed.
absl::Cleanup update_accessibility_focus = [this, visibility_changed] {
if (visibility_changed) {
overview_session_->UpdateAccessibilityFocus();
}
};
if (!target_visible) {
if (visibility_changed && save_desk_button_container_widget_) {
PerformFadeOutLayer(
save_desk_button_container_widget_->GetLayer(),
/*animate=*/true,
base::BindOnce(&OverviewGrid::OnSaveDeskButtonContainerFadedOut,
weak_ptr_factory_.GetWeakPtr()));
}
return;
}
// Create `save_desk_button_container_widget_`.
if (!save_desk_button_container_widget_) {
save_desk_button_container_widget_ =
CreateSaveDeskButtonContainerWidget(root_window_);
save_desk_button_container_widget_->SetContentsView(
std::make_unique<SavedDeskSaveDeskButtonContainer>(
base::BindRepeating(
&OverviewGrid::OnSaveDeskAsTemplateButtonPressed,
weak_ptr_factory_.GetWeakPtr()),
base::BindRepeating(&OverviewGrid::OnSaveDeskForLaterButtonPressed,
weak_ptr_factory_.GetWeakPtr())));
}
// If a desk animation is in progress, we don't want to animate
// `save_desk_button_container_widget_`.
const bool in_desk_animation = DesksController::Get()->animation();
// There may be an existing animation in progress triggered by
// `PerformFadeOutLayer()` above, which animates a widget to 0.f before
// calling `OnSaveDeskButtonContainerFadedOut()` to hide the widget on
// animation end. Stop animating so that the callbacks associated get fired,
// otherwise we may end up trying to show a widget that's already shown.
// `StopAnimating()` is a no-op if there is no animation in progress.
if (visibility_changed) {
save_desk_button_container_widget_->GetLayer()
->GetAnimator()
->StopAnimating();
save_desk_button_container_widget_->ShowInactive();
PerformFadeInLayer(save_desk_button_container_widget_->GetLayer(),
/*animate=*/!in_desk_animation);
}
// Enable/disable button and update tooltip.
auto* container = views::AsViewClass<SavedDeskSaveDeskButtonContainer>(
save_desk_button_container_widget_->GetContentsView());
CHECK(container);
SaveDeskOptionStatus template_status =
GetEnableStateAndTooltipIDForTemplateType(DeskTemplateType::kTemplate);
SaveDeskOptionStatus save_later_status =
GetEnableStateAndTooltipIDForTemplateType(
DeskTemplateType::kSaveAndRecall);
container->UpdateButtonEnableStateAndTooltip(DeskTemplateType::kTemplate,
template_status);
container->UpdateButtonEnableStateAndTooltip(DeskTemplateType::kSaveAndRecall,
save_later_status);
// Set the widget position above the overview item window and default width
// and height.
gfx::RectF first_overview_item_bounds;
if (item_list_.front()->animating_to_close()) {
CHECK_GT(item_list_.size(), 1u);
first_overview_item_bounds = item_list_[1]->target_bounds();
} else {
first_overview_item_bounds = item_list_.front()->target_bounds();
}
// Animate the widget so it moves with the items. The widget's size isn't
// changing, so its ok to use a bounds animation as opposed to a transform
// animation. If the visibility has changed, skip the bounds animation and use
// the fade animation from above. Align the widget so it is visually aligned
// with the first overview item.
ScopedOverviewAnimationSettings settings(
visibility_changed || in_desk_animation
? OVERVIEW_ANIMATION_NONE
: OVERVIEW_ANIMATION_LAYOUT_OVERVIEW_ITEMS_IN_OVERVIEW,
save_desk_button_container_widget_->GetNativeWindow());
gfx::Point available_origin =
gfx::ToRoundedPoint(first_overview_item_bounds.origin()) +
gfx::Vector2d(0, -kSaveDeskAsTemplateOverviewItemSpacingDp);
save_desk_button_container_widget_->SetBounds(gfx::Rect(
available_origin, save_desk_button_container_widget_->GetContentsView()
->GetPreferredSize()));
}
void OverviewGrid::EnableSaveDeskButtonContainer() {
if (!save_desk_button_container_widget_ ||
overview_session_->is_shutting_down()) {
return;
}
save_desk_button_container_widget_->GetContentsView()->SetEnabled(true);
}
bool OverviewGrid::IsSaveDeskButtonContainerVisible() const {
// The widget may be visible but in the process of fading away. We treat that
// as not visible.
return save_desk_button_container_widget_ &&
save_desk_button_container_widget_->IsVisible() &&
save_desk_button_container_widget_->GetLayer()->GetTargetOpacity() ==
1.f;
}
bool OverviewGrid::IsSaveDeskAsTemplateButtonVisible() const {
if (!IsSaveDeskButtonContainerVisible())
return false;
const auto* container = GetSaveDeskButtonContainer();
return container && container->save_desk_as_template_button() &&
container->save_desk_as_template_button()->GetVisible();
}
bool OverviewGrid::IsSaveDeskForLaterButtonVisible() const {
if (!IsSaveDeskButtonContainerVisible())
return false;
const auto* container = GetSaveDeskButtonContainer();
return container && container->save_desk_for_later_button() &&
container->save_desk_for_later_button()->GetVisible();
}
void OverviewGrid::OnTabletModeChanged() {
// We may not show virtual desk bar in clamshell mode such as in split view
// setup session, and the desk bar will be created in tablet mode either. In
// this case, we may need to init the virtual desk bar.
MaybeInitDesksWidget();
MaybeInitBirchBarWidget();
}
size_t OverviewGrid::GetNumWindows() const {
size_t size = 0u;
for (const std::unique_ptr<OverviewItemBase>& item : item_list_) {
size += item->GetWindows().size();
}
return size;
}
SavedDeskSaveDeskButton* OverviewGrid::GetSaveDeskAsTemplateButton() {
auto* container = GetSaveDeskButtonContainer();
return container ? container->save_desk_as_template_button() : nullptr;
}
SavedDeskSaveDeskButton* OverviewGrid::GetSaveDeskForLaterButton() {
auto* container = GetSaveDeskButtonContainer();
return container ? container->save_desk_for_later_button() : nullptr;
}
SavedDeskSaveDeskButtonContainer* OverviewGrid::GetSaveDeskButtonContainer() {
return save_desk_button_container_widget_
? views::AsViewClass<SavedDeskSaveDeskButtonContainer>(
save_desk_button_container_widget_->GetContentsView())
: nullptr;
}
const SavedDeskSaveDeskButtonContainer*
OverviewGrid::GetSaveDeskButtonContainer() const {
return save_desk_button_container_widget_
? views::AsViewClass<SavedDeskSaveDeskButtonContainer>(
save_desk_button_container_widget_->GetContentsView())
: nullptr;
}
const SplitViewSetupView* OverviewGrid::GetSplitViewSetupView() const {
return split_view_setup_widget_
? views::AsViewClass<SplitViewSetupView>(
split_view_setup_widget_->GetContentsView())
: nullptr;
}
gfx::Rect OverviewGrid::GetWallpaperClipBounds() const {
// The bottom of the clipping bounds should be above the birch bar.
gfx::Rect clipping_bounds = GetGridEffectiveBounds();
// If we are dragging while in portrait mode, the desk bar will shift down to
// accommodate the snap region. The clip region should be updated so that the
// desks bar is not covering the wallpaper. We update here instead of updating
// `bounds_` so we do not relayout the grid.
if (split_view_drag_indicators_ &&
split_view_drag_indicators_->current_window_dragging_state() ==
SplitViewDragIndicators::WindowDraggingState::kFromOverview &&
!chromeos::wm::IsLandscapeOrientationForWindow(root_window_)) {
clipping_bounds.SetVerticalBounds(
clipping_bounds.y() +
split_view_drag_indicators_->GetLeftHighlightViewBounds().height(),
clipping_bounds.bottom());
}
if (!birch_bar_widget_) {
return clipping_bounds;
}
const gfx::Rect birch_bar_bounds =
birch_bar_widget_->GetWindowBoundsInScreen();
// If there are chips in the bar, the bottom of clipping area should be above
// the top of birch bar. Otherwise, removing the birch bar height and top
// padding from the effect bounds to get clipping area.
const int clipping_bottom =
birch_bar_view_->GetChipsNum()
? birch_bar_bounds.y() - kCompactPaddingForEffectiveBounds
: birch_bar_bounds.bottom();
clipping_bounds.SetVerticalBounds(clipping_bounds.y(), clipping_bottom);
return clipping_bounds;
}
void OverviewGrid::MaybeInitBirchBarWidget(bool by_user) {
if (!ShouldShowBirchBar(root_window_) || birch_bar_widget_) {
return;
}
birch_bar_widget_ = BirchBarView::CreateBirchBarWidget(root_window_);
birch_bar_view_ =
views::AsViewClass<BirchBarView>(birch_bar_widget_->GetContentsView());
birch_bar_view_->SetRelayoutCallback(base::BindRepeating(
&OverviewGrid::OnBirchBarLayoutChanged, weak_ptr_factory_.GetWeakPtr()));
// Initialize the birch bar view with birch bar controller.
auto* birch_bar_controller = BirchBarController::Get();
CHECK(birch_bar_controller);
// Show loading state if the data is loading.
auto loading_state = BirchBarView::State::kLoading;
if (by_user) {
loading_state = BirchBarView::State::kLoadingByUser;
} else if (overview_session_->enter_exit_overview_type() ==
OverviewEnterExitType::kInformedRestore) {
loading_state = BirchBarView::State::kLoadingForInformedRestore;
}
// Note that we should set loading state before registering the bar to
// controller, since if there are cached items in controller, the bar would be
// set up without knowing the current loading state.
birch_bar_view_->SetState(loading_state);
birch_bar_controller->RegisterBar(birch_bar_view_);
// Stack birch bar at bottom to guarantee the dragged window is above it.
auto* window = birch_bar_widget_->GetNativeWindow();
window->parent()->StackChildAtBottom(window);
// Initialize the birch bar bounds to get correct paddings for grid.
MaybeUpdateBirchBarWidgetBounds();
}
void OverviewGrid::ShutdownBirchBarWidgetByUser() {
if (birch_bar_widget_) {
// Prevent the birch bar from receiving events while shutting down.
PrepareWidgetForShutdownAnimation(birch_bar_widget_.get());
birch_bar_view_->SetState(BirchBarView::State::kShuttingDown);
}
}
void OverviewGrid::DestroyBirchBarWidget(bool by_user) {
// The birch bar controller may be destroyed when shutting down Overview.
if (auto* birch_bar_controller = BirchBarController::Get()) {
birch_bar_controller->OnBarDestroying(birch_bar_view_);
}
birch_bar_view_ = nullptr;
birch_bar_widget_.reset();
if (by_user) {
RefreshGridBounds(/*animate=*/true);
}
}
void OverviewGrid::OnSplitViewStateChanged(
SplitViewController::State previous_state,
SplitViewController::State state) {
// Do nothing if overview is being shutdown.
OverviewController* overview_controller = OverviewController::Get();
if (!overview_controller->InOverviewSession()) {
return;
}
SplitViewController* split_view_controller =
SplitViewController::Get(root_window_);
const auto end_reason = split_view_controller->end_reason();
const bool unsnappable_window_activated =
state == SplitViewController::State::kNoSnap &&
end_reason == SplitViewController::EndReason::kUnsnappableWindowActivated;
// If two windows were snapped to both sides of the screen or an unsnappable
// window was just activated, or we're in single split mode in clamshell mode
// and there is no window in overview, end overview mode and bail out.
SnapGroupController* snap_group_controller = SnapGroupController::Get();
const bool both_snapped_windows =
state == SplitViewController::State::kBothSnapped ||
(snap_group_controller &&
snap_group_controller->GetTopmostVisibleSnapGroup(root_window_));
if (both_snapped_windows || unsnappable_window_activated ||
(split_view_controller->InClamshellSplitViewMode() &&
overview_session_->IsEmpty())) {
overview_session_->RestoreWindowActivation(false);
overview_controller->EndOverview(both_snapped_windows
? OverviewEndAction::kWindowActivating
: OverviewEndAction::kSplitView);
return;
}
// Update visibility on split state change: hide `birch_bar_widget_`,
// `desks_widget_`, `saved_desk_library_widget_`, and
// `save_desk_button_container_widget_` in partial overview; show in full
// overview.
if (state == SplitViewController::State::kNoSnap) {
MaybeInitBirchBarWidget();
RefreshDesksWidgets(/*visible=*/true);
} else {
DestroyBirchBarWidget();
RefreshDesksWidgets(/*visible=*/false);
UpdateSplitViewSetupViewWidget();
}
// Update the cannot snap warnings and adjust the grid bounds.
UpdateCannotSnapWarningVisibility(/*animate=*/true);
RefreshGridBounds(/*animate=*/false);
// If split view mode was ended, then activate the overview focus window, to
// match the behavior of entering overview mode in the beginning.
if (state == SplitViewController::State::kNoSnap)
wm::ActivateWindow(overview_session_->GetOverviewFocusWindow());
}
void OverviewGrid::OnSplitViewDividerPositionChanged() {
if (overview_session_->is_shutting_down() ||
window_util::IsInFasterSplitScreenSetupSession(root_window_)) {
// `SplitViewOverviewSession` will manually update the bounds so we don't
// need to update here in split view setup session.
return;
}
SetBoundsAndUpdatePositions(
GetGridBoundsInScreen(root_window_,
/*window_dragging_state=*/std::nullopt,
/*account_for_hotseat=*/true),
/*ignored_items=*/{}, /*animate=*/false);
}
void OverviewGrid::OnScreenCopiedBeforeRotation() {
rotation_pauser_ = OverviewController::Get()->PauseOcclusionTracker(
kOcclusionUnpauseDurationForRotation);
for (auto& item : item_list()) {
item->UpdateRoundedCornersAndShadow();
item->StopWidgetAnimation();
}
}
void OverviewGrid::OnScreenRotationAnimationFinished(
ScreenRotationAnimator* animator,
bool canceled) {
OverviewController* overview_controller = OverviewController::Get();
overview_controller->DelayedUpdateRoundedCornersAndShadow();
rotation_pauser_.reset();
}
void OverviewGrid::OnWallpaperChanging() {
grid_event_handler_.reset();
}
void OverviewGrid::OnWallpaperChanged() {
grid_event_handler_ = std::make_unique<OverviewGridEventHandler>(this);
}
void OverviewGrid::OnOverviewItemWindowDestroying(OverviewItem* overview_item,
bool reposition) {
// `this` will be the delegate to handle the window destroying if the
// underlying window represented by the corresponding overview item is a
// single window.
// Remove the item from `overview_session_` which will remove it from the
// grid. If `overview_session_` is not available then remove it from the grid
// directly.
// TODO(b/299391958): Investigate why `overview_session_` might be unavailable
// while grid is still alive.
if (overview_session_) {
overview_session_->RemoveItem(overview_item, /*item_destroying=*/true,
reposition);
} else {
RemoveItem(overview_item, /*item_destroying=*/true, reposition);
}
}
SavedDeskLibraryView* OverviewGrid::GetSavedDeskLibraryView() {
return saved_desk_library_widget_
? views::AsViewClass<SavedDeskLibraryView>(
saved_desk_library_widget_->GetContentsView())
: nullptr;
}
const SavedDeskLibraryView* OverviewGrid::GetSavedDeskLibraryView() const {
return saved_desk_library_widget_
? views::AsViewClass<SavedDeskLibraryView>(
saved_desk_library_widget_->GetContentsView())
: nullptr;
}
SaveDeskOptionStatus OverviewGrid::GetEnableStateAndTooltipIDForTemplateType(
DeskTemplateType type) const {
// The state and tooltips are only valid for the "Save desk as template" and
// "Save desk for later" buttons/menu items.
CHECK(type == DeskTemplateType::kTemplate ||
type == DeskTemplateType::kSaveAndRecall);
const SavedDeskPresenter* saved_desk_presenter =
overview_session_->saved_desk_presenter();
int current_entry_count = saved_desk_presenter->GetEntryCount(type);
int max_entry_count = saved_desk_presenter->GetMaxEntryCount(type);
// Disable if we already have the max supported saved desks.
if (current_entry_count >= max_entry_count) {
return SaveDeskOptionStatus{
.enabled = false,
.tooltip_id = GetTooltipID(type, TooltipStatus::kReachMax)};
}
// Iterate through all the windows in the grid to determine the number of
// unsupported and/or incognito windows.
aura::Window::Windows windows;
for (const auto& item : item_list_) {
auto item_windows = item.get()->GetWindows();
for (aura::Window* window : item_windows) {
windows.push_back(window);
}
}
// A snapped window is not part of the grid but needs to be considered.
if (auto* snapped_window =
SplitViewController::Get(root_window_)->GetDefaultSnappedWindow()) {
windows.push_back(snapped_window);
}
int incognito_window_count = 0;
int unsupported_window_count = 0;
for (aura::Window* window : windows) {
if (IsUnsupportedWindow(window)) {
++unsupported_window_count;
} else if (IsIncognitoWindow(window)) {
++incognito_window_count;
}
}
// Enable if there are any supported window.
if (incognito_window_count + unsupported_window_count !=
static_cast<int>(windows.size())) {
return {.enabled = true,
.tooltip_id = GetTooltipID(type, TooltipStatus::kOk)};
}
// Disable if there are incognito windows and unsupported Linux Apps but no
// supported windows.
if (incognito_window_count && unsupported_window_count) {
return {.enabled = false,
.tooltip_id = GetTooltipID(
type, TooltipStatus::kIncognitoAndUnsupportedWindow)};
}
// Disable if there are incognito windows but no supported windows.
if (incognito_window_count) {
return {.enabled = false,
.tooltip_id = GetTooltipID(type, TooltipStatus::kIncognitoWindow)};
}
// Disable if there are unsupported Linux Apps but no supported windows.
DCHECK(unsupported_window_count);
return {.enabled = false,
.tooltip_id = GetTooltipID(type, TooltipStatus::kUnsupportedWindow)};
}
void OverviewGrid::MaybeInitDesksWidget() {
TRACE_EVENT0("ui", "OverviewGrid::MaybeInitDesksWidget");
if (!ShouldInitDesksWidget()) {
return;
}
base::ScopedUmaHistogramTimer latency_recorder(
"Ash.Overview.DeskBarInitLatency");
desks_widget_ = DeskBarViewBase::CreateDeskWidget(
root_window_, GetDesksWidgetBounds(), DeskBarViewBase::Type::kOverview);
// The following order of function calls is significant: SetContentsView()
// must be called before OverviewDeskBarView:: Init(). This is needed because
// the desks mini views need to access the widget to get the root window in
// order to know how to layout themselves.
desks_bar_view_ =
desks_widget_->SetContentsView(std::make_unique<OverviewDeskBarView>(
weak_ptr_factory_.GetWeakPtr(), window_occlusion_calculator_));
desks_bar_view_->Init();
// If the feature ContinuousOverviewScrollAnimation is enabled and a
// continuous scroll is now starting, move the desk bar up so we can slowly
// place it downward in relation to the scroll offset.
if (overview_session_->enter_exit_overview_type() ==
OverviewEnterExitType::kContinuousAnimationEnterOnScrollUpdate) {
gfx::Transform transform;
transform.Translate(0, -desks_bar_view_->GetBoundsInScreen().height());
auto* layer = desks_bar_view_->layer();
layer->SetTransform(transform);
}
desks_widget_->Show();
// Stack desks bar at bottom to guarantee the dragged window is above it.
auto* window = desks_widget_->GetNativeWindow();
window->parent()->StackChildAtBottom(window);
}
std::vector<gfx::RectF> OverviewGrid::GetWindowRects(
const base::flat_set<OverviewItemBase*>& ignored_items) {
gfx::Rect total_bounds = GetGridEffectiveBounds();
// Windows occupy vertically centered area with additional vertical insets.
total_bounds.Inset(GetGridInsetsImpl(total_bounds));
std::vector<gfx::RectF> rects;
// Keep track of the lowest coordinate.
int max_bottom = total_bounds.y();
// Right bound of the narrowest row.
int min_right = total_bounds.right();
// Right bound of the widest row.
int max_right = total_bounds.x();
// Keep track of the difference between the narrowest and the widest row.
// Initially this is set to the worst it can ever be assuming the windows fit.
int width_diff = total_bounds.width();
// Initially allow the windows to occupy all available width. Shrink this
// available space horizontally to find the breakdown into rows that achieves
// the minimal |width_diff|.
int right_bound = total_bounds.right();
// Determine the optimal height bisecting between |low_height| and
// |high_height|. Once this optimal height is known, |height_fixed| is set to
// true and the rows are balanced by repeatedly squeezing the widest row to
// cause windows to overflow to the subsequent rows.
int low_height = kVerticalSpaceBetweenItemsDp;
int high_height = std::max(low_height, total_bounds.height() + 1);
int height = 0.5 * (low_height + high_height);
bool height_fixed = false;
// Repeatedly try to fit the windows |rects| within |right_bound|.
// If a maximum |height| is found such that all window |rects| fit, this
// fitting continues while shrinking the |right_bound| in order to balance the
// rows. If the windows fit the |right_bound| would have been decremented at
// least once so it needs to be incremented once before getting out of this
// loop and one additional pass made to actually fit the |rects|.
// If the |rects| cannot fit (e.g. there are too many windows) the bisection
// will still finish and we might increment the |right_bound| once pixel extra
// which is acceptable since there is an unused margin on the right.
bool make_last_adjustment = false;
while (true) {
gfx::Rect overview_mode_bounds(total_bounds);
overview_mode_bounds.set_width(right_bound - total_bounds.x());
bool windows_fit = FitWindowRectsInBounds(
overview_mode_bounds, std::min(kMaxHeight, height), ignored_items,
&rects, &max_bottom, &min_right, &max_right);
if (height_fixed) {
if (!windows_fit) {
// Revert the previous change to |right_bound| and do one last pass.
right_bound++;
make_last_adjustment = true;
break;
}
// Break if all the windows are zero-width at the current scale.
if (max_right <= total_bounds.x())
break;
} else {
// Find the optimal row height bisecting between |low_height| and
// |high_height|.
if (windows_fit)
low_height = height;
else
high_height = height;
height = 0.5 * (low_height + high_height);
// When height can no longer be improved, start balancing the rows.
if (height == low_height)
height_fixed = true;
}
if (windows_fit && height_fixed) {
if (max_right - min_right <= width_diff) {
// Row alignment is getting better. Try to shrink the |right_bound| in
// order to squeeze the widest row.
right_bound = max_right - 1;
width_diff = max_right - min_right;
} else {
// Row alignment is getting worse.
// Revert the previous change to |right_bound| and do one last pass.
right_bound++;
make_last_adjustment = true;
break;
}
}
}
// Once the windows in |item_list_| no longer fit, the change to
// |right_bound| was reverted. Perform one last pass to position the |rects|.
if (make_last_adjustment) {
gfx::Rect overview_mode_bounds(total_bounds);
overview_mode_bounds.set_width(right_bound - total_bounds.x());
FitWindowRectsInBounds(overview_mode_bounds, std::min(kMaxHeight, height),
ignored_items, &rects, &max_bottom, &min_right,
&max_right);
}
MaybeCenterOverviewItems(ignored_items, rects);
gfx::Vector2dF offset(0, (total_bounds.bottom() - max_bottom) / 2.f);
for (auto& rect : rects)
rect += offset;
return rects;
}
std::vector<gfx::RectF> OverviewGrid::GetWindowRectsForScrollingLayout(
const base::flat_set<OverviewItemBase*>& ignored_items) {
gfx::Rect total_bounds = GetGridEffectiveBounds();
// Windows occupy vertically centered area with additional vertical insets.
total_bounds.Inset(GetGridInsetsImpl(total_bounds));
total_bounds.Inset(
gfx::Insets::TLBR(kTabletModeOverviewItemTopPaddingDp, 0, 0, 0));
// `scroll_offset_min_` may be changed on positioning (either by closing
// windows or display changes). Recalculate it and clamp `scroll_offset_`, so
// that the items are always aligned left or right.
float rightmost_window_right = 0;
for (const auto& item : item_list_) {
if (ShouldExcludeItemFromGridLayout(item.get(), ignored_items))
continue;
rightmost_window_right =
std::max(rightmost_window_right, item->target_bounds().right());
}
// `rightmost_window_right` may have been modified by an earlier scroll.
// `scroll_offset_` is added to adjust for that. If `rightmost_window_right`
// is less than `total_bounds.right()`, the grid cannot be scrolled. Set
// `scroll_offset_min_` to 0 so that `std::clamp()` is happy.
rightmost_window_right -= scroll_offset_;
scroll_offset_min_ = total_bounds.right() - rightmost_window_right;
if (scroll_offset_min_ > 0.f)
scroll_offset_min_ = 0.f;
scroll_offset_ = std::clamp(scroll_offset_, scroll_offset_min_, 0.f);
// Map which contains up to |kScrollingLayoutRow| entries with information on
// the last items right bound per row. Used so we can place the next item
// directly next to the last item. The key is the y-value of the row, and the
// value is the rightmost x-value.
base::flat_map<float, float> right_edge_map;
// Since the number of rows is limited, windows are laid out column-wise so
// that the most recently used windows are displayed first. When the dragged
// item becomes an |ignored_item|, move the other windows accordingly.
// |window_position| matches the positions of the windows' indexes from
// |item_list_|. However, if a window turns out to be an ignored item,
// |window_position| remains where the item was as to then reposition the
// other window's bounds in place of that item.
const int height = (total_bounds.height() - ((kScrollingLayoutRow - 1) *
kVerticalSpaceBetweenItemsDp)) /
kScrollingLayoutRow;
int window_position = 0;
std::vector<gfx::RectF> rects;
for (const auto& window : item_list_) {
OverviewItemBase* item = window.get();
if (ShouldExcludeItemFromGridLayout(item, ignored_items)) {
rects.emplace_back();
continue;
}
// Calculate the width and y position of the item.
const int width = CalculateWidthAndMaybeSetUnclippedBounds(item, height);
const int y = (height + kVerticalSpaceBetweenItemsDp) *
(window_position % kScrollingLayoutRow) +
total_bounds.y();
// Use the right bounds of the item next to in the row as the x position, if
// that item exists.
const int x = right_edge_map.contains(y)
? right_edge_map[y]
: total_bounds.x() + scroll_offset_;
right_edge_map[y] = x + width + kHorizontalSpaceBetweenItemsDp;
DCHECK_LE(static_cast<int>(right_edge_map.size()), kScrollingLayoutRow);
const gfx::RectF bounds(x, y, width, height);
rects.push_back(bounds);
++window_position;
}
return rects;
}
bool OverviewGrid::FitWindowRectsInBounds(
const gfx::Rect& bounds,
int height,
const base::flat_set<OverviewItemBase*>& ignored_items,
std::vector<gfx::RectF>* out_rects,
int* out_max_bottom,
int* out_min_right,
int* out_max_right) {
const size_t item_count = item_list_.size();
out_rects->resize(item_count);
// Start in the top-left corner of |bounds|.
int left = bounds.x();
int top = bounds.y();
// Keep track of the lowest coordinate.
*out_max_bottom = bounds.y();
// Right bound of the narrowest row.
*out_min_right = bounds.right();
// Right bound of the widest row.
*out_max_right = bounds.x();
// All elements are of same height and only the height is necessary to
// determine each item's scale.
for (size_t i = 0u; i < item_count; ++i) {
const auto& item = item_list_[i];
if (ShouldExcludeItemFromGridLayout(item.get(), ignored_items)) {
continue;
}
int width = CalculateWidthAndMaybeSetUnclippedBounds(item.get(), height);
if ((left + width + kHorizontalSpaceBetweenItemsDp) > bounds.right()) {
// Move to the next row if possible.
if (*out_min_right > left)
*out_min_right = left;
if (*out_max_right < left)
*out_max_right = left;
top += (height + kVerticalSpaceBetweenItemsDp);
// Check if the new row reaches the bottom or if the first item in the new
// row does not fit within the available width.
if ((top + height + kVerticalSpaceBetweenItemsDp) > bounds.bottom() ||
bounds.x() + width + kHorizontalSpaceBetweenItemsDp >
bounds.right()) {
return false;
}
left = bounds.x();
}
// Position the current rect.
(*out_rects)[i] = gfx::RectF(left, top, width, height);
// Increment horizontal position using sanitized positive `width`.
left += (width + kHorizontalSpaceBetweenItemsDp);
*out_max_bottom = top + height;
}
// Update the narrowest and widest row width for the last row.
if (*out_min_right > left)
*out_min_right = left;
if (*out_max_right < left)
*out_max_right = left;
return true;
}
void OverviewGrid::MaybeCenterOverviewItems(
const base::flat_set<OverviewItemBase*>& ignored_items,
std::vector<gfx::RectF>& out_window_rects) {
if (!features::IsForestFeatureEnabled()) {
return;
}
if (out_window_rects.empty()) {
return;
}
gfx::RangeF current_row_union_range(out_window_rects[0].x(),
out_window_rects[0].right());
int current_row_y = out_window_rects[0].y();
int current_row_first_item_index = 0;
// Batch process to center overview items within the same row.
auto batch_center_overview_items = [&](size_t end_index) {
// Calculate the shift amount `current_diff` required to center the overview
// items.
const float range_center =
(current_row_union_range.start() + current_row_union_range.end()) / 2.f;
const int center_position = GetGridEffectiveBounds().CenterPoint().x();
float current_diff = std::round(std::abs(center_position - range_center));
for (size_t j = current_row_first_item_index; j < end_index; j++) {
out_window_rects[j].Offset(current_diff, 0);
}
};
for (size_t i = 0; i < out_window_rects.size(); i++) {
if (ShouldExcludeItemFromGridLayout(item_list_[i].get(), ignored_items)) {
continue;
}
gfx::RectF& rect = out_window_rects[i];
if (rect.y() != current_row_y) {
// As a new row begins processing, batch-shift the previous row's rects
// and reset its parameters.
batch_center_overview_items(i);
current_row_union_range.set_start(rect.x());
current_row_y = rect.y();
current_row_first_item_index = i;
}
// Extend the range by adding the `rect`'s width and extra in-between items
// spacing.
current_row_union_range.set_end(rect.right());
}
// Post-processing rects in the last row.
batch_center_overview_items(out_window_rects.size());
}
size_t OverviewGrid::GetOverviewItemIndex(OverviewItemBase* item) const {
auto iter = base::ranges::find(item_list_, item,
&std::unique_ptr<OverviewItemBase>::get);
CHECK(iter != item_list_.end());
return iter - item_list_.begin();
}
size_t OverviewGrid::FindInsertionIndex(const aura::Window* window) const {
const auto mru_windows =
Shell::Get()->mru_window_tracker()->BuildMruWindowList(kActiveDesk);
// As we iterate over the whole MRU window list, the windows in this grid
// will be encountered in the same order, but possibly with other windows in
// between. Ignore those other windows, and only increment `grid_item_index`
// when we reach the next window in this grid.
size_t grid_item_index = 0, mru_window_index = 0;
while (grid_item_index < item_list_.size() &&
mru_window_index < mru_windows.size()) {
OverviewItemBase* grid_item = item_list_[grid_item_index].get();
aura::Window* mru_window = mru_windows[mru_window_index];
if (grid_item == drop_target_ || mru_window == window) {
return grid_item_index;
}
if (grid_item->Contains(mru_window)) {
grid_item_index++;
}
mru_window_index++;
}
// If there is no drop target window and `window` is not in the MRU window
// list, insert at the end.
return item_list_.size();
}
void OverviewGrid::AddDraggedWindowIntoOverviewOnDragEnd(
aura::Window* dragged_window) {
DCHECK(overview_session_);
if (overview_session_->IsWindowInOverview(dragged_window))
return;
overview_session_->AddItemInMruOrder(dragged_window, /*reposition=*/false,
/*animate=*/false, /*restack=*/true,
/*use_spawn_animation=*/false);
}
gfx::Rect OverviewGrid::GetDesksWidgetBounds() const {
gfx::Rect desks_widget_screen_bounds = bounds_;
desks_widget_screen_bounds.set_height(GetDesksBarHeight());
// Shift the widget down to make room for the splitview indicator guidance
// when it's shown at the top of the screen and no other windows are snapped.
if (split_view_drag_indicators_ &&
split_view_drag_indicators_->current_window_dragging_state() ==
SplitViewDragIndicators::WindowDraggingState::kFromOverview &&
!IsLayoutHorizontal(root_window_) &&
!SplitViewController::Get(root_window_)->InSplitViewMode()) {
desks_widget_screen_bounds.Offset(
0, split_view_drag_indicators_->GetLeftHighlightViewBounds().height() +
2 * kHighlightScreenEdgePaddingDp);
}
return screen_util::SnapBoundsToDisplayEdge(desks_widget_screen_bounds,
root_window_);
}
gfx::Rect OverviewGrid::GetBirchBarWidgetBounds() const {
CHECK(birch_bar_view_);
// Calculate the available space for birch bar.
const gfx::Insets paddings = GetGridHorizontalPaddings();
gfx::Rect available_space = bounds_;
available_space.Inset(paddings);
// Update the available space of the birch bar and get the preferred size.
birch_bar_view_->UpdateAvailableSpace(available_space.width());
const gfx::Size birch_bar_widget_size = birch_bar_view_->GetPreferredSize();
const int birch_bar_bottom_padding = GetBirchBarBottomPadding(root_window_);
// Centeralize the bich bar at the bottom.
const int top_inset = available_space.height() -
birch_bar_widget_size.height() -
birch_bar_bottom_padding;
const int horizontal_inset =
(available_space.width() - birch_bar_widget_size.width()) / 2;
available_space.Inset(gfx::Insets::TLBR(
top_inset, horizontal_inset, birch_bar_bottom_padding, horizontal_inset));
return available_space;
}
void OverviewGrid::UpdateCannotSnapWarningVisibility(bool animate) {
for (auto& overview_mode_item : item_list_) {
overview_mode_item->UpdateCannotSnapWarningVisibility(animate);
}
}
void OverviewGrid::OnSaveDeskAsTemplateButtonPressed() {
auto* container = save_desk_button_container_widget_->GetContentsView();
// Disable the save desk button container after the first click to prevent
// unwanted clicks/user interaction.
if (!container->GetEnabled())
return;
container->SetEnabled(false);
overview_session_->saved_desk_presenter()->MaybeSaveActiveDeskAsSavedDesk(
DeskTemplateType::kTemplate, root_window());
}
void OverviewGrid::OnSaveDeskForLaterButtonPressed() {
auto* container = save_desk_button_container_widget_->GetContentsView();
// Disable the save desk button container after the first click to prevent
// unwanted clicks/user interaction.
if (!container->GetEnabled())
return;
container->SetEnabled(false);
overview_session_->saved_desk_presenter()->MaybeSaveActiveDeskAsSavedDesk(
DeskTemplateType::kSaveAndRecall, root_window());
}
void OverviewGrid::OnSavedDeskGridFadedOut() {
for (auto& overview_mode_item : item_list_) {
overview_mode_item->RevertHideForSavedDeskLibrary(/*animate=*/true);
}
saved_desk_library_widget_->Hide();
desks_bar_view_->UpdateButtonsForSavedDeskGrid();
UpdateSaveDeskButtons();
UpdateNoWindowsWidget(/*no_items=*/empty(), /*animate=*/true,
/*is_continuous_enter=*/false);
if (informed_restore_widget_) {
informed_restore_widget_->GetNativeWindow()->SetEventTargetingPolicy(
aura::EventTargetingPolicy::kTargetAndDescendants);
PerformFadeInLayer(informed_restore_widget_->GetLayer(), /*animate=*/true);
}
}
void OverviewGrid::OnSaveDeskButtonContainerFadedOut() {
save_desk_button_container_widget_->Hide();
}
void OverviewGrid::OnBirchBarLayoutChanged(
BirchBarView::RelayoutReason reason) {
if (reason == BirchBarView::RelayoutReason::kAvailableSpaceChanged) {
return;
}
if (!MaybeUpdateBirchBarWidgetBounds()) {
return;
}
// Animate wallpaper clipping.
if (scoped_overview_wallpaper_clipper_) {
// Perform wallpaper clipping animations according to relayout reason.
using AnimationType = ScopedOverviewWallpaperClipper::AnimationType;
using RelayoutReason = BirchBarView::RelayoutReason;
auto animation_type = AnimationType::kNone;
base::OnceClosure animation_callback;
switch (reason) {
case RelayoutReason::kSetup:
animation_type = AnimationType::kShowBirchBarInOverview;
break;
case RelayoutReason::kSetupByUser:
animation_type = AnimationType::kShowBirchBarByUser;
break;
case RelayoutReason::kClearOnDisabled:
animation_type = AnimationType::kHideBirchBarByUser;
animation_callback =
base::BindOnce(&OverviewGrid::DestroyBirchBarWidget,
weak_ptr_factory_.GetWeakPtr(), /*by_user=*/true);
break;
case RelayoutReason::kAddRemoveChip:
// If the last chip was removed, perform hiding bar animation.
if (!birch_bar_view_->GetChipsNum()) {
animation_type = AnimationType::kHideBirchBarByUser;
}
break;
case RelayoutReason::kAvailableSpaceChanged:
break;
}
scoped_overview_wallpaper_clipper_->RefreshWallpaperClipBounds(
animation_type, std::move(animation_callback));
// If the relayout is due to showing birch bar by user, we need to refresh
// the grids with wallpaper clipping animation. This must be called after
// refreshing wallpaper clipping bounds, because refreshing grid bounds may
// also update wallpaper clipping bounds without animation.
if (reason == RelayoutReason::kSetupByUser) {
RefreshGridBounds(/*animate=*/true);
}
}
// A relayout means the bar's accessibility may have changed.
overview_session_->UpdateAccessibilityFocus();
}
void OverviewGrid::RefreshDesksWidgets(bool visible) {
if (!visible) {
views::Widget::Widgets desks_widgets = {
desks_widget_.get(), saved_desk_library_widget_.get(),
save_desk_button_container_widget_.get()};
aura::Window::Windows hide_windows;
base::ranges::for_each(
desks_widgets, [&hide_windows](views::Widget* widget) {
if (widget) {
hide_windows.emplace_back(widget->GetNativeWindow());
}
});
hide_windows_in_partial_overview_ =
std::make_unique<ScopedOverviewHideWindows>(
/*windows=*/hide_windows,
/*forced_hidden=*/true);
} else {
hide_windows_in_partial_overview_.reset();
MaybeUpdateDesksWidgetBounds();
}
}
void OverviewGrid::UpdateNumSavedDeskUnsupportedWindows(
const std::vector<raw_ptr<aura::Window, VectorExperimental>>& windows,
bool increment) {
if (!saved_desk_util::ShouldShowSavedDesksOptions()) {
return;
}
int addend = increment ? 1 : -1;
// Track the number of unsupported and incognito windows. The saved desk
// buttons are disabled if there are no supported or non-incognito windows.
for (aura::Window* window : windows) {
if (IsUnsupportedWindow(window)) {
num_unsupported_windows_ += addend;
} else if (IsIncognitoWindow(window)) {
num_incognito_windows_ += addend;
}
// TODO(b/319904368): Clean this up after we figure out which app changes
// its supported/incognito type and a proper fix is made.
if (num_unsupported_windows_ < 0) {
num_unsupported_windows_ = 0;
SCOPED_CRASH_KEY_NUMBER(
"OG_UNSDUW", "unsupported_app_type",
static_cast<int>(window->GetProperty(chromeos::kAppTypeKey)));
SCOPED_CRASH_KEY_STRING32("OG_UNSDUW", "unsupported_app_id",
::full_restore::GetAppId(window));
base::debug::DumpWithoutCrashing();
} else if (num_incognito_windows_ < 0) {
num_incognito_windows_ = 0;
SCOPED_CRASH_KEY_NUMBER(
"OG_UNSDUW", "incognito_app_type",
static_cast<int>(window->GetProperty(chromeos::kAppTypeKey)));
SCOPED_CRASH_KEY_STRING32("OG_UNSDUW", "incognito_app_id",
::full_restore::GetAppId(window));
base::debug::DumpWithoutCrashing();
}
}
}
int OverviewGrid::GetDesksBarHeight() const {
DeskBarViewBase::State state = desks_bar_view_
? desks_bar_view_->state()
: DeskBarViewBase::GetPreferredState(
DeskBarViewBase::Type::kOverview);
return DeskBarViewBase::GetPreferredBarHeight(
root_window_, DeskBarViewBase::Type::kOverview, state);
}
bool OverviewGrid::ShouldUseScrollingLayout(size_t ignored_items_size) const {
if (Shell::Get()->IsInTabletMode()) {
return item_list_.size() - ignored_items_size >=
kMinimumItemsForScrollingLayout;
}
return false;
}
void OverviewGrid::AddDropTargetImpl(OverviewItemBase* dragged_item,
size_t position,
bool animate) {
CHECK(!drop_target_);
auto drop_target = std::make_unique<OverviewDropTarget>(this);
drop_target_ = drop_target.get();
item_list_.insert(item_list_.begin() + position, std::move(drop_target));
base::flat_set<OverviewItemBase*> ignored_items;
if (dragged_item) {
ignored_items.insert(dragged_item);
}
PositionWindows(animate, ignored_items);
UpdateNoWindowsWidget(empty(), animate, /*is_continuous_enter=*/false);
}
void OverviewGrid::OnSkipButtonPressed() {
// Destroys `this`.
// TODO(sophiewen): Consider adding another exit point metric.
OverviewController::Get()->EndOverview(OverviewEndAction::kKeyEscapeOrBack);
}
void OverviewGrid::OnSettingsButtonPressed() {
// Opens the OS Settings page, which causes a window activation change and
// `EndOverview()` and destroys `this`.
Shell::Get()->shell_delegate()->OpenMultitaskingSettings();
}
void OverviewGrid::UpdateSplitViewSetupViewWidget() {
if (!SplitViewController::Get(root_window_)->InClamshellSplitViewMode()) {
// If we aren't in split view, don't show the widget.
split_view_setup_widget_.reset();
return;
}
if (!split_view_setup_widget_) {
views::Widget::InitParams params(
views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET,
views::Widget::InitParams::TYPE_POPUP);
params.activatable = views::Widget::InitParams::Activatable::kYes;
params.parent = desks_util::GetActiveDeskContainerForRoot(root_window_);
params.name = "SplitViewSetupViewWidget";
params.init_properties_container.SetProperty(kHideInDeskMiniViewKey, true);
params.init_properties_container.SetProperty(kOverviewUiKey, true);
split_view_setup_widget_ =
std::make_unique<views::Widget>(std::move(params));
split_view_setup_widget_->GetLayer()->SetFillsBoundsOpaquely(false);
split_view_setup_widget_->SetContentsView(
std::make_unique<SplitViewSetupView>(
base::BindRepeating(&OverviewGrid::OnSkipButtonPressed,
weak_ptr_factory_.GetWeakPtr()),
base::BindRepeating(&OverviewGrid::OnSettingsButtonPressed,
weak_ptr_factory_.GetWeakPtr())));
split_view_setup_widget_->ShowInactive();
}
const gfx::Rect grid_bounds = GetGridEffectiveBounds();
gfx::Rect centered_bounds(grid_bounds);
const gfx::Size preferred_size =
split_view_setup_widget_->GetContentsView()->GetPreferredSize();
centered_bounds.ClampToCenteredSize(preferred_size);
// If there are no windows, set it in the center of the grid.
if (item_list_.empty()) {
split_view_setup_widget_->SetBounds(centered_bounds);
return;
}
// Position the widget under the bottom of the last overview item, but
// centered horizontally.
const int last_overview_item_bottom =
item_list_.back()->target_bounds().bottom();
// We need to maintain a minimum distance between the bottom of the toast and
// the bottom of the grid bounds so that it won't be hidden by other UI
// elements such as shelf. Under extreme condition, which should rarely
// happen, if the bottom are of the partial overview grids is too small to
// accommodate for both `kMinimumDistanceBetweenToastAndWorkAreaDp` and
// `kSplitViewSetupToastSpacingDp`. We will prioritize the minimum
// distance, under which condition the toast and settings button may appear
// above the overview items.
const int toast_y = std::min(
last_overview_item_bottom + kSplitViewSetupToastSpacingDp,
grid_bounds.bottom() - kMinimumDistanceBetweenToastAndWorkAreaDp -
preferred_size.height());
centered_bounds.set_y(toast_y);
split_view_setup_widget_->SetBounds(centered_bounds);
overview_session_->UpdateAccessibilityFocus();
}
bool OverviewGrid::ShouldInitDesksWidget() const {
return desks_util::ShouldDesksBarBeCreated() && !desks_widget_;
}
} // namespace ash
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