| // Copyright 2021 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "ash/capture_mode/capture_mode_session_focus_cycler.h" |
| |
| #include <vector> |
| |
| #include "ash/accessibility/accessibility_controller_impl.h" |
| #include "ash/accessibility/magnifier/magnifier_utils.h" |
| #include "ash/accessibility/scoped_a11y_override_window_setter.h" |
| #include "ash/capture_mode/capture_label_view.h" |
| #include "ash/capture_mode/capture_mode_bar_view.h" |
| #include "ash/capture_mode/capture_mode_button.h" |
| #include "ash/capture_mode/capture_mode_camera_preview_view.h" |
| #include "ash/capture_mode/capture_mode_controller.h" |
| #include "ash/capture_mode/capture_mode_session.h" |
| #include "ash/capture_mode/capture_mode_settings_view.h" |
| #include "ash/capture_mode/capture_mode_source_view.h" |
| #include "ash/capture_mode/capture_mode_toggle_button.h" |
| #include "ash/capture_mode/capture_mode_type_view.h" |
| #include "ash/capture_mode/capture_mode_util.h" |
| #include "ash/constants/ash_features.h" |
| #include "ash/shell.h" |
| #include "ash/style/style_util.h" |
| #include "ash/wm/mru_window_tracker.h" |
| #include "ash/wm/window_state.h" |
| #include "base/containers/flat_map.h" |
| #include "base/containers/flat_set.h" |
| #include "chromeos/ui/base/chromeos_ui_constants.h" |
| #include "ui/accessibility/ax_enums.mojom.h" |
| #include "ui/views/accessibility/view_accessibility.h" |
| #include "ui/views/controls/button/label_button.h" |
| #include "ui/views/controls/focus_ring.h" |
| #include "ui/views/controls/highlight_path_generator.h" |
| #include "ui/views/view.h" |
| #include "ui/wm/core/coordinate_conversion.h" |
| |
| namespace ash { |
| |
| namespace { |
| |
| // The focusable items for the FocusGroup::kSelection group. |
| constexpr std::array<FineTunePosition, 9> kSelectionTabbingOrder = { |
| FineTunePosition::kCenter, FineTunePosition::kTopLeft, |
| FineTunePosition::kTopCenter, FineTunePosition::kTopRight, |
| FineTunePosition::kRightCenter, FineTunePosition::kBottomRight, |
| FineTunePosition::kBottomCenter, FineTunePosition::kBottomLeft, |
| FineTunePosition::kLeftCenter}; |
| |
| // We inset the `window_of_interest` by `kWindowOfInterestInset` and outset any |
| // other window by `kIntersectingWindowOutset` we intersect with it, so that the |
| // resulting points of intersections are inside the bounds of |
| // `window_of_interest` and outside the bounds of the intersecting window. |
| // `chromeos::kResizeOutsideBoundsSize` is used while outsetting the window as |
| // it is the size of the window's resize border, and located events on it are |
| // still targeted to the window even though they're outside the window's bounds. |
| constexpr int kIntersectingWindowOutset = |
| chromeos::kResizeOutsideBoundsSize + 1; |
| constexpr int kWindowOfInterestInset = 1; |
| |
| std::vector<aura::Window*> GetWindowListIgnoreModalForActiveDesk() { |
| return Shell::Get()->mru_window_tracker()->BuildWindowListIgnoreModal( |
| DesksMruType::kActiveDesk); |
| } |
| |
| views::Widget* GetCameraPreviewWidget() { |
| auto* camera_controller = CaptureModeController::Get()->camera_controller(); |
| return camera_controller ? camera_controller->camera_preview_widget() |
| : nullptr; |
| } |
| |
| CameraPreviewView* GetCameraPreviewView() { |
| auto* camera_controller = CaptureModeController::Get()->camera_controller(); |
| return camera_controller ? camera_controller->camera_preview_view() : nullptr; |
| } |
| |
| // Returns true if the `value` is within the inclusive range of `low` and |
| // `high`. |
| bool InRange(int value, int low, int high) { |
| return value >= low && value <= high; |
| } |
| |
| // Returns a vector of intersection points of two bounds. |
| std::vector<gfx::Point> GetIntersectionPoints(gfx::Rect bounds_a, |
| gfx::Rect bounds_b) { |
| // Calculate the attributes for the `intersection`. |
| const int intersection_x = std::max(bounds_a.x(), bounds_b.x()); |
| const int intersection_y = std::max(bounds_a.y(), bounds_b.y()); |
| const int intersection_right = std::min(bounds_a.right(), bounds_b.right()); |
| const int intersection_bottom = |
| std::min(bounds_a.bottom(), bounds_b.bottom()); |
| const auto intersection = gfx::Rect(intersection_x, intersection_y, |
| intersection_right - intersection_x, |
| intersection_bottom - intersection_y); |
| |
| if (intersection.width() <= 0 || intersection.height() <= 0) |
| return {}; |
| |
| const std::vector<gfx::Point> candidate_points = { |
| intersection.origin(), intersection.bottom_left(), |
| intersection.bottom_right(), intersection.top_right()}; |
| |
| // Iterate the corners of the `intersection` and check if the point falls on |
| // the edge of the `intersection` and within the range of the edge. |
| std::vector<gfx::Point> intersection_points; |
| for (const auto& point : candidate_points) { |
| if (point.x() == bounds_a.x() && |
| InRange(point.y(), bounds_a.y(), bounds_a.bottom())) { |
| intersection_points.push_back(point); |
| } |
| if (point.x() == bounds_a.right() && |
| InRange(point.y(), bounds_a.y(), bounds_a.bottom())) { |
| intersection_points.push_back(point); |
| } |
| if (point.y() == bounds_a.y() && |
| InRange(point.x(), bounds_a.x(), bounds_a.right())) { |
| intersection_points.push_back(point); |
| } |
| if (point.y() == bounds_a.bottom() && |
| InRange(point.x(), bounds_a.x(), bounds_a.right())) { |
| intersection_points.push_back(point); |
| } |
| } |
| return intersection_points; |
| } |
| |
| // Returns true if `window_of_interest` is fully occluded with no point on it |
| // selectable by hovering the mouse cursor over it, false otherwise. When |
| // calculating the intersection point, we always inset the bounds of |
| // `window_of_interest` and outset the bounds of other windows which the |
| // `window_of_interest` is being compared with to ensure that the intersection |
| // point falls within the bounds of `window_of_interest`. |
| bool IsWindowFullyOccluded(aura::Window* window_of_interest) { |
| std::stack<gfx::Point> points_stack; |
| gfx::Rect window_of_interest_bounds = window_of_interest->GetBoundsInScreen(); |
| gfx::Rect insetted_win_of_interest_bounds = window_of_interest_bounds; |
| insetted_win_of_interest_bounds.Inset(kWindowOfInterestInset); |
| points_stack.push(insetted_win_of_interest_bounds.origin()); |
| points_stack.push(insetted_win_of_interest_bounds.top_right()); |
| points_stack.push(insetted_win_of_interest_bounds.bottom_left()); |
| points_stack.push(insetted_win_of_interest_bounds.bottom_right()); |
| |
| // Create a map: the key is the intersection point, the value is the window |
| // which the `window_of_interest` is being compared with to get the |
| // intersection point. |
| base::flat_map<gfx::Point, aura::Window*> point_to_intersecting_window_map; |
| base::flat_set<aura::Window*> visited; |
| |
| while (!points_stack.empty()) { |
| const gfx::Point point = points_stack.top(); |
| points_stack.pop(); |
| auto* top_window = |
| capture_mode_util::GetTopMostCapturableWindowAtPoint(point); |
| if (top_window == nullptr) |
| continue; |
| if (top_window == window_of_interest) |
| return false; |
| |
| auto outsetted_top_window_bounds = top_window->GetBoundsInScreen(); |
| outsetted_top_window_bounds.Inset(-kIntersectingWindowOutset); |
| |
| if (!visited.insert(top_window).second) { |
| auto iter = point_to_intersecting_window_map.find(point); |
| if (iter == point_to_intersecting_window_map.end()) |
| continue; |
| // `top_window` has been visited before, so we have already intersected it |
| // with `window_of_interest` and added the intersection points (if any) to |
| // the `points_stack`. However, the current `point` may have resulted from |
| // intersecting `window_of_interest` with a window other than the current |
| // `top_window`. We need to intersect `top_window` and that other window |
| // to get the intersection points that fall inside the bounds of |
| // `window_of_interest` (if any) so that we can check those as well. |
| auto* associated_window = iter->second; |
| if (associated_window == top_window) |
| continue; |
| |
| auto outsetted_associated_win_bounds = |
| associated_window->GetBoundsInScreen(); |
| outsetted_associated_win_bounds.Inset(-kIntersectingWindowOutset); |
| for (const auto& p : GetIntersectionPoints( |
| outsetted_top_window_bounds, outsetted_associated_win_bounds)) { |
| if (window_of_interest_bounds.Contains(p)) |
| points_stack.push(p); |
| |
| // We don't need to insert `p` into `point_to_intersecting_window_map` |
| // here as `p` is not directly from the `window_of_interest`. |
| } |
| |
| continue; |
| } |
| |
| for (const auto& p : GetIntersectionPoints( |
| outsetted_top_window_bounds, insetted_win_of_interest_bounds)) { |
| DCHECK(window_of_interest_bounds.Contains(p)); |
| |
| point_to_intersecting_window_map.emplace(p, top_window); |
| points_stack.push(p); |
| } |
| } |
| return true; |
| } |
| |
| bool IsCaptureWindowSelectable(aura::Window* window) { |
| if (WindowState::Get(window)->IsMinimized() || !window->IsVisible()) |
| return false; |
| |
| return !IsWindowFullyOccluded(window); |
| } |
| |
| } // namespace |
| |
| // ----------------------------------------------------------------------------- |
| // CaptureModeSessionFocusCycler::HighlightableView: |
| |
| std::unique_ptr<views::HighlightPathGenerator> |
| CaptureModeSessionFocusCycler::HighlightableView::CreatePathGenerator() { |
| return nullptr; |
| } |
| |
| void CaptureModeSessionFocusCycler::HighlightableView::PseudoFocus() { |
| has_focus_ = true; |
| |
| views::View* view = GetView(); |
| DCHECK(view); |
| |
| // This is lazy initialization of the FocusRing effectively. This is only used |
| // for children of HighlightableView, so it will not replace any other style |
| // of FocusRing. |
| if (!focus_ring_) { |
| focus_ring_ = StyleUtil::SetUpFocusRingForView(view); |
| // Use a custom focus predicate as the default one checks if |view| actually |
| // has focus which won't be happening since our widgets are not activatable. |
| focus_ring_->SetHasFocusPredicate( |
| [&](views::View* view) { return view->GetVisible() && has_focus_; }); |
| |
| auto path_generator = CreatePathGenerator(); |
| if (path_generator) |
| focus_ring_->SetPathGenerator(std::move(path_generator)); |
| } |
| |
| focus_ring_->Layout(); |
| focus_ring_->SchedulePaint(); |
| |
| view->NotifyAccessibilityEvent(ax::mojom::Event::kSelection, true); |
| |
| magnifier_utils::MaybeUpdateActiveMagnifierFocus( |
| view->GetBoundsInScreen().CenterPoint()); |
| } |
| |
| void CaptureModeSessionFocusCycler::HighlightableView::PseudoBlur() { |
| has_focus_ = false; |
| |
| if (!focus_ring_) |
| return; |
| |
| focus_ring_->Layout(); |
| focus_ring_->SchedulePaint(); |
| } |
| |
| void CaptureModeSessionFocusCycler::HighlightableView::ClickView() { |
| views::View* view = GetView(); |
| DCHECK(view); |
| |
| views::Button* button = views::Button::AsButton(view); |
| if (!button) |
| return; |
| button->AcceleratorPressed(ui::Accelerator(ui::VKEY_SPACE, /*modifiers=*/0)); |
| } |
| |
| // ----------------------------------------------------------------------------- |
| // CaptureModeSessionFocusCycler::HighlightableWindow: |
| |
| CaptureModeSessionFocusCycler::HighlightableWindow::HighlightableWindow( |
| aura::Window* window, |
| CaptureModeSession* session) |
| : window_(window), session_(session) { |
| DCHECK(window_); |
| window_->AddObserver(this); |
| } |
| |
| CaptureModeSessionFocusCycler::HighlightableWindow::~HighlightableWindow() { |
| window_->RemoveObserver(this); |
| } |
| |
| views::View* CaptureModeSessionFocusCycler::HighlightableWindow::GetView() { |
| return nullptr; |
| } |
| |
| void CaptureModeSessionFocusCycler::HighlightableWindow::PseudoFocus() { |
| has_focus_ = true; |
| |
| DCHECK(window_); |
| session_->HighlightWindowForTab(window_); |
| |
| // TODO(afakhry): Check with a11y team if we need to focus on a |
| // different region of the window. |
| magnifier_utils::MaybeUpdateActiveMagnifierFocus( |
| window_->GetBoundsInScreen().origin()); |
| } |
| |
| void CaptureModeSessionFocusCycler::HighlightableWindow::PseudoBlur() { |
| has_focus_ = false; |
| } |
| |
| void CaptureModeSessionFocusCycler::HighlightableWindow::ClickView() { |
| // A HighlightableWindow is not clickable. |
| } |
| |
| void CaptureModeSessionFocusCycler::HighlightableWindow::OnWindowDestroying( |
| aura::Window* window) { |
| session_->focus_cycler_->highlightable_windows_.erase(window); |
| // `this` will be deleted after the above operation. |
| } |
| |
| // ----------------------------------------------------------------------------- |
| // CaptureModeSessionFocusCycler: |
| |
| CaptureModeSessionFocusCycler::CaptureModeSessionFocusCycler( |
| CaptureModeSession* session) |
| : groups_for_fullscreen_{FocusGroup::kNone, FocusGroup::kTypeSource, |
| FocusGroup::kCameraPreview, |
| FocusGroup::kSettingsMenu, |
| FocusGroup::kSettingsClose}, |
| groups_for_region_{FocusGroup::kNone, FocusGroup::kTypeSource, |
| FocusGroup::kSelection, FocusGroup::kCameraPreview, |
| FocusGroup::kCaptureButton, FocusGroup::kSettingsMenu, |
| FocusGroup::kSettingsClose}, |
| groups_for_window_{FocusGroup::kNone, FocusGroup::kTypeSource, |
| FocusGroup::kCaptureWindow, FocusGroup::kSettingsMenu, |
| FocusGroup::kSettingsClose}, |
| session_(session), |
| scoped_a11y_overrider_( |
| std::make_unique<ScopedA11yOverrideWindowSetter>()) { |
| for (auto* window : GetWindowListIgnoreModalForActiveDesk()) { |
| if (!IsCaptureWindowSelectable(window)) |
| continue; |
| highlightable_windows_.emplace( |
| window, std::make_unique<HighlightableWindow>(window, session_)); |
| } |
| } |
| |
| CaptureModeSessionFocusCycler::~CaptureModeSessionFocusCycler() = default; |
| |
| void CaptureModeSessionFocusCycler::AdvanceFocus(bool reverse) { |
| // Advancing focus while the settings menu is open will close the menu and |
| // clear focus, unless the settings menu was opened using keyboard navigation. |
| if (!settings_menu_opened_with_keyboard_nav_) { |
| views::Widget* settings_widget = GetSettingsMenuWidget(); |
| if (settings_widget && settings_widget->IsVisible()) { |
| session_->SetSettingsMenuShown(false); |
| return; |
| } |
| } |
| |
| ClearCurrentVisibleFocus(); |
| |
| FocusGroup previous_focus_group = current_focus_group_; |
| const size_t previous_group_size = GetGroupSize(previous_focus_group); |
| const size_t previous_focus_index = focus_index_; |
| |
| // Go to the next group if the next index is out of bounds for the current |
| // group. Otherwise, update |focus_index_| depending on |reverse|. |
| if (!reverse && (previous_group_size == 0u || |
| previous_focus_index >= previous_group_size - 1u)) { |
| current_focus_group_ = GetNextGroup(/*reverse=*/false); |
| focus_index_ = 0u; |
| } else if (reverse && previous_focus_index == 0u) { |
| current_focus_group_ = GetNextGroup(/*reverse=*/true); |
| // The size of FocusGroup::kCaptureWindow could be empty. |
| focus_index_ = std::max( |
| static_cast<int32_t>(GetGroupSize(current_focus_group_)) - 1, 0); |
| } else { |
| focus_index_ = reverse ? focus_index_ - 1u : focus_index_ + 1u; |
| } |
| scoped_a11y_overrider_->MaybeUpdateA11yOverrideWindow( |
| GetA11yOverrideWindow()); |
| |
| const std::vector<HighlightableView*> current_views = |
| GetGroupItems(current_focus_group_); |
| // If `reverse`, focus the HighlightableWindow first before moving the focus |
| // to items inside it. |
| if (reverse) |
| MaybeFocusHighlightableWindow(current_views); |
| |
| // Focus the new item. |
| if (!current_views.empty()) { |
| DCHECK_LT(focus_index_, current_views.size()); |
| current_views[focus_index_]->PseudoFocus(); |
| } |
| |
| // Selection focus is drawn directly on a layer owned by |session_|. Notify |
| // the layer to repaint if necessary. |
| const bool current_group_is_selection = |
| current_focus_group_ == FocusGroup::kSelection; |
| const bool redraw_layer = previous_focus_group == FocusGroup::kSelection || |
| current_group_is_selection; |
| |
| if (redraw_layer) |
| session_->RepaintRegion(); |
| |
| if (current_group_is_selection) { |
| const gfx::Rect user_region = |
| CaptureModeController::Get()->user_capture_region(); |
| if (user_region.IsEmpty()) |
| return; |
| |
| const auto fine_tune_position = GetFocusedFineTunePosition(); |
| DCHECK_NE(fine_tune_position, FineTunePosition::kNone); |
| |
| gfx::Point point_of_interest = |
| fine_tune_position == FineTunePosition::kCenter |
| ? user_region.CenterPoint() |
| : capture_mode_util::GetLocationForFineTunePosition( |
| user_region, fine_tune_position); |
| wm::ConvertPointToScreen(session_->current_root(), &point_of_interest); |
| magnifier_utils::MaybeUpdateActiveMagnifierFocus(point_of_interest); |
| |
| return; |
| } |
| } |
| |
| void CaptureModeSessionFocusCycler::ClearFocus() { |
| ClearCurrentVisibleFocus(); |
| |
| if (current_focus_group_ == FocusGroup::kSelection) |
| session_->RepaintRegion(); |
| |
| current_focus_group_ = FocusGroup::kNone; |
| focus_index_ = 0u; |
| } |
| |
| bool CaptureModeSessionFocusCycler::HasFocus() const { |
| return current_focus_group_ != FocusGroup::kNone; |
| } |
| |
| bool CaptureModeSessionFocusCycler::OnSpacePressed() { |
| if (current_focus_group_ == FocusGroup::kNone || |
| current_focus_group_ == FocusGroup::kSelection || |
| current_focus_group_ == FocusGroup::kPendingSettings) { |
| return false; |
| } |
| |
| std::vector<HighlightableView*> views = GetGroupItems(current_focus_group_); |
| if (views.empty()) |
| return false; |
| |
| // If current focused view doesn't exist, return directly. |
| if (!FindFocusedViewAndUpdateFocusIndex(views)) |
| return false; |
| |
| DCHECK(!views.empty()); |
| DCHECK_LT(focus_index_, views.size()); |
| HighlightableView* view = views[focus_index_]; |
| |
| // Let the session handle the space key event if the region toggle button |
| // currently has focus and we are already in region mode, as we still want to |
| // create a default region in this case. |
| CaptureModeBarView* bar_view = session_->capture_mode_bar_view_; |
| if (view->GetView() == |
| bar_view->capture_source_view()->region_toggle_button() && |
| CaptureModeController::Get()->source() == CaptureModeSource::kRegion) { |
| return false; |
| } |
| |
| // Clicking on the settings button first clears current focus and moves us to |
| // a temporary state. The next focus signal will navigate through the settings |
| // items. |
| if (view->GetView() == session_->capture_mode_bar_view_->settings_button()) { |
| settings_menu_opened_with_keyboard_nav_ = true; |
| ClearCurrentVisibleFocus(); |
| current_focus_group_ = FocusGroup::kPendingSettings; |
| focus_index_ = 0u; |
| } |
| |
| // ClickView comes last as it will destroy |this| if |view| is the close |
| // button. |
| view->ClickView(); |
| return true; |
| } |
| |
| bool CaptureModeSessionFocusCycler::RegionGroupFocused() const { |
| return current_focus_group_ == FocusGroup::kSelection || |
| current_focus_group_ == FocusGroup::kCaptureButton; |
| } |
| |
| bool CaptureModeSessionFocusCycler::CaptureBarFocused() const { |
| return current_focus_group_ == FocusGroup::kTypeSource || |
| current_focus_group_ == FocusGroup::kSettingsClose || |
| current_focus_group_ == FocusGroup::kPendingSettings; |
| } |
| |
| bool CaptureModeSessionFocusCycler::CaptureLabelFocused() const { |
| return current_focus_group_ == FocusGroup::kCaptureButton; |
| } |
| |
| FineTunePosition CaptureModeSessionFocusCycler::GetFocusedFineTunePosition() |
| const { |
| if (current_focus_group_ != FocusGroup::kSelection) |
| return FineTunePosition::kNone; |
| return kSelectionTabbingOrder[focus_index_]; |
| } |
| |
| void CaptureModeSessionFocusCycler::OnCaptureLabelWidgetUpdated() { |
| UpdateA11yAnnotation(); |
| } |
| |
| void CaptureModeSessionFocusCycler::OnSettingsMenuWidgetCreated() { |
| views::Widget* settings_menu_widget = |
| session_->capture_mode_settings_widget_.get(); |
| DCHECK(settings_menu_widget); |
| settings_menu_widget_observeration_.Observe(settings_menu_widget); |
| UpdateA11yAnnotation(); |
| } |
| |
| void CaptureModeSessionFocusCycler::OnWidgetClosing(views::Widget* widget) { |
| settings_menu_opened_with_keyboard_nav_ = false; |
| settings_menu_widget_observeration_.Reset(); |
| |
| // Return immediately if the widget is closing by the closing of `session_`. |
| if (session_->is_shutting_down()) |
| return; |
| // Remove focus if one of the settings related groups is currently |
| // focused. |
| if (current_focus_group_ == FocusGroup::kPendingSettings || |
| current_focus_group_ == FocusGroup::kSettingsMenu) { |
| // When the settings menu is closed while focus is in or about to be in it, |
| // we manually put the focus back on the settings button. |
| current_focus_group_ = FocusGroup::kSettingsClose; |
| focus_index_ = 0u; |
| const auto highlightable_views = GetGroupItems(current_focus_group_); |
| DCHECK_EQ(highlightable_views.size(), 2u); |
| scoped_a11y_overrider_->MaybeUpdateA11yOverrideWindow( |
| GetA11yOverrideWindow()); |
| highlightable_views[focus_index_]->PseudoFocus(); |
| } |
| UpdateA11yAnnotation(); |
| } |
| |
| void CaptureModeSessionFocusCycler::ClearCurrentVisibleFocus() { |
| // The settings menu widget may be destroyed while it has focus. No need to |
| // clear focus in this case. |
| if (current_focus_group_ == FocusGroup::kSettingsMenu && |
| !GetSettingsMenuWidget()) { |
| return; |
| } |
| |
| std::vector<HighlightableView*> views = GetGroupItems(current_focus_group_); |
| if (views.empty()) |
| return; |
| |
| // If current focused view doesn't exist, return directly. |
| if (!FindFocusedViewAndUpdateFocusIndex(views)) |
| return; |
| |
| DCHECK_LT(focus_index_, views.size()); |
| views[focus_index_]->PseudoBlur(); |
| } |
| |
| CaptureModeSessionFocusCycler::FocusGroup |
| CaptureModeSessionFocusCycler::GetNextGroup(bool reverse) const { |
| if (current_focus_group_ == FocusGroup::kPendingSettings) { |
| DCHECK(GetSettingsMenuWidget()); |
| return FocusGroup::kSettingsMenu; |
| } |
| |
| const std::vector<FocusGroup>& groups_list = GetCurrentGroupList(); |
| const int increment = reverse ? -1 : 1; |
| const auto iter = base::ranges::find(groups_list, current_focus_group_); |
| DCHECK(iter != groups_list.end()); |
| size_t next_group_index = std::distance(groups_list.begin(), iter); |
| const auto group_size = groups_list.size(); |
| do { |
| next_group_index = (group_size + next_group_index + increment) % group_size; |
| } while (!IsGroupAvailable(groups_list[next_group_index])); |
| |
| return groups_list[next_group_index]; |
| } |
| |
| const std::vector<CaptureModeSessionFocusCycler::FocusGroup>& |
| CaptureModeSessionFocusCycler::GetCurrentGroupList() const { |
| switch (session_->controller_->source()) { |
| case CaptureModeSource::kFullscreen: |
| return groups_for_fullscreen_; |
| case CaptureModeSource::kRegion: |
| return groups_for_region_; |
| case CaptureModeSource::kWindow: |
| return groups_for_window_; |
| } |
| } |
| |
| bool CaptureModeSessionFocusCycler::IsGroupAvailable(FocusGroup group) const { |
| switch (group) { |
| case FocusGroup::kNone: |
| case FocusGroup::kTypeSource: |
| case FocusGroup::kSettingsClose: |
| case FocusGroup::kPendingSettings: |
| return true; |
| case FocusGroup::kSelection: |
| case FocusGroup::kCaptureButton: { |
| // The selection UI and capture button are focusable only when the label |
| // button of CaptureLabelView is visible. |
| auto* widget = session_->capture_label_widget_.get(); |
| if (!widget) |
| return false; |
| auto* capture_label_view = |
| static_cast<CaptureLabelView*>(widget->GetContentsView()); |
| return capture_label_view->label_button()->GetVisible(); |
| } |
| case FocusGroup::kCaptureWindow: |
| return session_->controller_->source() == CaptureModeSource::kWindow && |
| GetGroupSize(FocusGroup::kCaptureWindow) > 0; |
| case FocusGroup::kSettingsMenu: |
| return session_->capture_mode_settings_view_; |
| case FocusGroup::kCameraPreview: { |
| auto* camera_preview_widget = GetCameraPreviewWidget(); |
| return camera_preview_widget && camera_preview_widget->IsVisible(); |
| } |
| } |
| } |
| |
| size_t CaptureModeSessionFocusCycler::GetGroupSize(FocusGroup group) const { |
| if (group == FocusGroup::kSelection) |
| return 9u; |
| return GetGroupItems(group).size(); |
| } |
| |
| std::vector<CaptureModeSessionFocusCycler::HighlightableView*> |
| CaptureModeSessionFocusCycler::GetGroupItems(FocusGroup group) const { |
| std::vector<HighlightableView*> items; |
| switch (group) { |
| case FocusGroup::kNone: |
| case FocusGroup::kSelection: |
| case FocusGroup::kPendingSettings: |
| break; |
| case FocusGroup::kTypeSource: { |
| CaptureModeBarView* bar_view = session_->capture_mode_bar_view_; |
| CaptureModeTypeView* type_view = bar_view->capture_type_view(); |
| CaptureModeSourceView* source_view = bar_view->capture_source_view(); |
| items = {type_view->image_toggle_button(), |
| type_view->video_toggle_button(), |
| source_view->fullscreen_toggle_button(), |
| source_view->region_toggle_button(), |
| source_view->window_toggle_button()}; |
| |
| base::EraseIf(items, |
| [](CaptureModeSessionFocusCycler::HighlightableView* item) { |
| return !item || !item->GetView()->GetEnabled(); |
| }); |
| break; |
| } |
| case FocusGroup::kCaptureButton: { |
| views::Widget* widget = session_->capture_label_widget_.get(); |
| DCHECK(widget); |
| items = {static_cast<CaptureLabelView*>(widget->GetContentsView())}; |
| break; |
| } |
| case FocusGroup::kCaptureWindow: { |
| const std::vector<aura::Window*> windows = |
| GetWindowListIgnoreModalForActiveDesk(); |
| if (!windows.empty()) { |
| const std::vector<HighlightableView*> camera_items = |
| GetGroupItems(FocusGroup::kCameraPreview); |
| for (auto* window : windows) { |
| auto iter = highlightable_windows_.find(window); |
| if (iter != highlightable_windows_.end()) { |
| items.push_back(iter->second.get()); |
| items.insert(items.end(), camera_items.begin(), camera_items.end()); |
| } |
| } |
| } |
| break; |
| } |
| case FocusGroup::kSettingsClose: { |
| CaptureModeBarView* bar_view = session_->capture_mode_bar_view_; |
| items = {bar_view->settings_button(), bar_view->close_button()}; |
| break; |
| } |
| case FocusGroup::kSettingsMenu: { |
| CaptureModeSettingsView* settings_view = |
| session_->capture_mode_settings_view_; |
| DCHECK(settings_view); |
| items = settings_view->GetHighlightableItems(); |
| break; |
| } |
| case FocusGroup::kCameraPreview: { |
| auto* camera_preview_view = GetCameraPreviewView(); |
| if (camera_preview_view) { |
| items.push_back(camera_preview_view); |
| // The resize button is forced to be hidden if the camera preview is not |
| // collapsible. Do not advance the focus to it in this case. |
| if (camera_preview_view->is_collapsible()) |
| items.push_back(camera_preview_view->resize_button()); |
| } |
| break; |
| } |
| } |
| return items; |
| } |
| |
| views::Widget* CaptureModeSessionFocusCycler::GetSettingsMenuWidget() const { |
| return session_->capture_mode_settings_widget_.get(); |
| } |
| |
| aura::Window* CaptureModeSessionFocusCycler::GetA11yOverrideWindow() const { |
| switch (current_focus_group_) { |
| case FocusGroup::kCaptureButton: |
| return session_->capture_label_widget()->GetNativeWindow(); |
| case FocusGroup::kSettingsMenu: |
| return session_->capture_mode_settings_widget()->GetNativeWindow(); |
| case FocusGroup::kNone: |
| case FocusGroup::kTypeSource: |
| case FocusGroup::kSelection: |
| case FocusGroup::kCaptureWindow: |
| case FocusGroup::kSettingsClose: |
| case FocusGroup::kPendingSettings: |
| return session_->capture_mode_bar_widget()->GetNativeWindow(); |
| case FocusGroup::kCameraPreview: |
| return GetCameraPreviewWidget()->GetNativeWindow(); |
| } |
| } |
| |
| bool CaptureModeSessionFocusCycler::FindFocusedViewAndUpdateFocusIndex( |
| std::vector<HighlightableView*> views) { |
| // No need to update `focus_index_` if the corresponding view is focused now. |
| if (focus_index_ < views.size() && views[focus_index_]->has_focus()) |
| return true; |
| |
| const size_t current_focus_index = |
| std::find_if(views.begin(), views.end(), |
| [](CaptureModeSessionFocusCycler::HighlightableView* item) { |
| return item->has_focus(); |
| }) - |
| views.begin(); |
| |
| // If current focused view doesn't exist, return false; |
| if (current_focus_index == views.size()) { |
| // If `focus_index_` is out of bound, update it to the last index of the |
| // `views`. |
| if (focus_index_ >= views.size()) |
| focus_index_ = views.size() - 1; |
| return false; |
| } |
| |
| // Update `focus_index_` to ensure it's up to date, since highlightable views |
| // of `current_focus_group_` can be updated during keyboard navigation, for |
| // example, the custom folder option can be added or removed via the select |
| // folder menu item. |
| focus_index_ = current_focus_index; |
| return true; |
| } |
| |
| void CaptureModeSessionFocusCycler::UpdateA11yAnnotation() { |
| std::vector<views::Widget*> a11y_widgets; |
| |
| // If the bar widget is not available, then this is called while shutting |
| // down the capture mode session. |
| views::Widget* bar_widget = session_->capture_mode_bar_widget_.get(); |
| if (bar_widget) |
| a11y_widgets.push_back(bar_widget); |
| |
| // Add the label widget only if the button is visible. |
| views::Widget* label_widget = session_->capture_label_widget_.get(); |
| if (label_widget && |
| static_cast<CaptureLabelView*>(label_widget->GetContentsView()) |
| ->label_button() |
| ->GetVisible()) { |
| a11y_widgets.push_back(label_widget); |
| } |
| |
| // Add the settings widget if it exists. |
| views::Widget* settings_menu_widget = |
| session_->capture_mode_settings_widget_.get(); |
| if (settings_menu_widget) |
| a11y_widgets.push_back(settings_menu_widget); |
| |
| // Helper to update |target|'s a11y focus with |previous| and |next|, which |
| // can be null. |
| auto update_a11y_widget_focus = |
| [](views::Widget* target, views::Widget* previous, views::Widget* next) { |
| DCHECK(target); |
| auto* contents_view = target->GetContentsView(); |
| auto& view_a11y = contents_view->GetViewAccessibility(); |
| view_a11y.OverridePreviousFocus(previous); |
| view_a11y.OverrideNextFocus(next); |
| contents_view->NotifyAccessibilityEvent(ax::mojom::Event::kTreeChanged, |
| true); |
| }; |
| |
| // If there is only one widget left, clear the focus overrides so that they |
| // do not point to deleted objects. |
| if (a11y_widgets.size() == 1u) { |
| update_a11y_widget_focus(a11y_widgets[0], nullptr, nullptr); |
| return; |
| } |
| |
| const int size = a11y_widgets.size(); |
| for (int i = 0; i < size; ++i) { |
| const int previous_index = (i + size - 1) % size; |
| const int next_index = (i + 1) % size; |
| update_a11y_widget_focus(a11y_widgets[i], a11y_widgets[previous_index], |
| a11y_widgets[next_index]); |
| } |
| } |
| |
| void CaptureModeSessionFocusCycler::MaybeFocusHighlightableWindow( |
| const std::vector<HighlightableView*>& current_views) { |
| if (current_focus_group_ != FocusGroup::kCaptureWindow) |
| return; |
| |
| const std::vector<HighlightableView*> camera_preview_group_items = |
| GetGroupItems(FocusGroup::kCameraPreview); |
| if (camera_preview_group_items.empty()) |
| return; |
| |
| DCHECK(!current_views.empty()); |
| // Call HighlightableWindow::PseudoFocus() to highlight the window first |
| // before moving the focus to the last focusable item inside the camera |
| // preview. This will set the window as the current selected window, which |
| // will move the camera preview inside it. |
| if (current_views[focus_index_] == camera_preview_group_items.back()) { |
| const size_t focusable_items_in_a_window = |
| 1 + camera_preview_group_items.size(); |
| const size_t window_index = (focus_index_ / focusable_items_in_a_window) * |
| focusable_items_in_a_window; |
| current_views[window_index]->PseudoFocus(); |
| } |
| } |
| |
| } // namespace ash |