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Diffstat (limited to 'chromium/ash/wm/overview/window_overview.cc')
| -rw-r--r-- | chromium/ash/wm/overview/window_overview.cc | 444 |
1 files changed, 0 insertions, 444 deletions
diff --git a/chromium/ash/wm/overview/window_overview.cc b/chromium/ash/wm/overview/window_overview.cc deleted file mode 100644 index a7df1f7a458..00000000000 --- a/chromium/ash/wm/overview/window_overview.cc +++ /dev/null @@ -1,444 +0,0 @@ -// Copyright 2013 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/wm/overview/window_overview.h" - -#include <algorithm> - -#include "ash/metrics/user_metrics_recorder.h" -#include "ash/screen_ash.h" -#include "ash/shell.h" -#include "ash/shell_window_ids.h" -#include "ash/wm/mru_window_tracker.h" -#include "ash/wm/overview/scoped_transform_overview_window.h" -#include "ash/wm/overview/window_selector.h" -#include "ash/wm/overview/window_selector_item.h" -#include "base/metrics/histogram.h" -#include "third_party/skia/include/core/SkColor.h" -#include "ui/aura/client/cursor_client.h" -#include "ui/aura/root_window.h" -#include "ui/aura/window.h" -#include "ui/compositor/scoped_layer_animation_settings.h" -#include "ui/events/event.h" -#include "ui/views/background.h" -#include "ui/views/widget/widget.h" - -namespace ash { - -namespace { - -// Conceptually the window overview is a table or grid of cells having this -// fixed aspect ratio. The number of columns is determined by maximizing the -// area of them based on the number of windows. -const float kCardAspectRatio = 4.0f / 3.0f; - -// In the conceptual overview table, the window margin is the space reserved -// around the window within the cell. This margin does not overlap so the -// closest distance between adjacent windows will be twice this amount. -const int kWindowMargin = 30; - -// The minimum number of cards along the major axis (i.e. horizontally on a -// landscape orientation). -const int kMinCardsMajor = 3; - -// The duration of transition animations on the overview selector. -const int kOverviewSelectorTransitionMilliseconds = 100; - -// The color and opacity of the overview selector. -const SkColor kWindowOverviewSelectionColor = SK_ColorBLACK; -const float kWindowOverviewSelectionOpacity = 0.5f; - -// The padding or amount of the window selector widget visible around the edges -// of the currently selected window. -const int kWindowOverviewSelectionPadding = 25; - -// A comparator for locating a given target window. -struct WindowSelectorItemComparator - : public std::unary_function<WindowSelectorItem*, bool> { - explicit WindowSelectorItemComparator(const aura::Window* target_window) - : target(target_window) { - } - - bool operator()(WindowSelectorItem* window) const { - return window->TargetedWindow(target) != NULL; - } - - const aura::Window* target; -}; - -// An observer which holds onto the passed widget until the animation is -// complete. -class CleanupWidgetAfterAnimationObserver : public ui::LayerAnimationObserver { - public: - explicit CleanupWidgetAfterAnimationObserver( - scoped_ptr<views::Widget> widget); - - // ui::LayerAnimationObserver: - virtual void OnLayerAnimationEnded( - ui::LayerAnimationSequence* sequence) OVERRIDE; - virtual void OnLayerAnimationAborted( - ui::LayerAnimationSequence* sequence) OVERRIDE; - virtual void OnLayerAnimationScheduled( - ui::LayerAnimationSequence* sequence) OVERRIDE; - - private: - virtual ~CleanupWidgetAfterAnimationObserver(); - - scoped_ptr<views::Widget> widget_; - - DISALLOW_COPY_AND_ASSIGN(CleanupWidgetAfterAnimationObserver); -}; - -CleanupWidgetAfterAnimationObserver::CleanupWidgetAfterAnimationObserver( - scoped_ptr<views::Widget> widget) - : widget_(widget.Pass()) { - widget_->GetNativeWindow()->layer()->GetAnimator()->AddObserver(this); -} - -CleanupWidgetAfterAnimationObserver::~CleanupWidgetAfterAnimationObserver() { - widget_->GetNativeWindow()->layer()->GetAnimator()->RemoveObserver(this); -} - -void CleanupWidgetAfterAnimationObserver::OnLayerAnimationEnded( - ui::LayerAnimationSequence* sequence) { - delete this; -} - -void CleanupWidgetAfterAnimationObserver::OnLayerAnimationAborted( - ui::LayerAnimationSequence* sequence) { - delete this; -} - -void CleanupWidgetAfterAnimationObserver::OnLayerAnimationScheduled( - ui::LayerAnimationSequence* sequence) { -} - -} // namespace - -WindowOverview::WindowOverview(WindowSelector* window_selector, - WindowSelectorItemList* windows, - aura::Window* single_root_window) - : window_selector_(window_selector), - windows_(windows), - selection_index_(0), - single_root_window_(single_root_window), - overview_start_time_(base::Time::Now()), - cursor_client_(NULL) { - for (WindowSelectorItemList::iterator iter = windows_->begin(); - iter != windows_->end(); ++iter) { - (*iter)->PrepareForOverview(); - } - PositionWindows(); - DCHECK(!windows_->empty()); - cursor_client_ = aura::client::GetCursorClient( - windows_->front()->GetRootWindow()); - if (cursor_client_) { - cursor_client_->SetCursor(ui::kCursorPointer); - cursor_client_->ShowCursor(); - // TODO(flackr): Only prevent cursor changes for windows in the overview. - // This will be easier to do without exposing the overview mode code if the - // cursor changes are moved to ToplevelWindowEventHandler::HandleMouseMoved - // as suggested there. - cursor_client_->LockCursor(); - } - ash::Shell::GetInstance()->PrependPreTargetHandler(this); - Shell* shell = Shell::GetInstance(); - shell->metrics()->RecordUserMetricsAction(UMA_WINDOW_OVERVIEW); - HideAndTrackNonOverviewWindows(); -} - -WindowOverview::~WindowOverview() { - const aura::WindowTracker::Windows hidden_windows = hidden_windows_.windows(); - for (aura::WindowTracker::Windows::const_iterator iter = - hidden_windows.begin(); iter != hidden_windows.end(); ++iter) { - ui::ScopedLayerAnimationSettings settings( - (*iter)->layer()->GetAnimator()); - settings.SetTransitionDuration(base::TimeDelta::FromMilliseconds( - ScopedTransformOverviewWindow::kTransitionMilliseconds)); - settings.SetPreemptionStrategy( - ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); - (*iter)->Show(); - (*iter)->layer()->SetOpacity(1); - } - if (cursor_client_) - cursor_client_->UnlockCursor(); - ash::Shell::GetInstance()->RemovePreTargetHandler(this); - UMA_HISTOGRAM_MEDIUM_TIMES( - "Ash.WindowSelector.TimeInOverview", - base::Time::Now() - overview_start_time_); -} - -void WindowOverview::SetSelection(size_t index) { - gfx::Rect target_bounds(GetSelectionBounds(index)); - - if (selection_widget_) { - // If the selection widget is already active, determine the animation to - // use to animate the widget to the new bounds. - int change = static_cast<int>(index) - static_cast<int>(selection_index_); - int windows = static_cast<int>(windows_->size()); - // If moving from the first to the last or last to the first index, - // convert the delta to be +/- 1. - if (windows > 2 && abs(change) == windows - 1) { - if (change < 0) - change += windows; - else - change -= windows; - } - if (selection_index_ < windows_->size() && - (*windows_)[selection_index_]->target_bounds().y() != - (*windows_)[index]->target_bounds().y() && - abs(change) == 1) { - // The selection has changed forward or backwards by one with a change - // in the height of the target. In this case create a new selection widget - // to fade in on the new position and animate and fade out the old one. - gfx::Display dst_display = gfx::Screen::GetScreenFor( - selection_widget_->GetNativeWindow())->GetDisplayMatching( - target_bounds); - gfx::Vector2d fade_out_direction( - change * ((*windows_)[selection_index_]->target_bounds().width() + - 2 * kWindowMargin), 0); - aura::Window* old_selection = selection_widget_->GetNativeWindow(); - - // CleanupWidgetAfterAnimationObserver will delete itself (and the - // widget) when the animation is complete. - new CleanupWidgetAfterAnimationObserver(selection_widget_.Pass()); - ui::ScopedLayerAnimationSettings animation_settings( - old_selection->layer()->GetAnimator()); - animation_settings.SetTransitionDuration( - base::TimeDelta::FromMilliseconds( - kOverviewSelectorTransitionMilliseconds)); - animation_settings.SetPreemptionStrategy( - ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); - old_selection->SetBoundsInScreen( - GetSelectionBounds(selection_index_) + fade_out_direction, - dst_display); - old_selection->layer()->SetOpacity(0); - InitializeSelectionWidget(); - selection_widget_->GetNativeWindow()->SetBoundsInScreen( - target_bounds - fade_out_direction, dst_display); - } - ui::ScopedLayerAnimationSettings animation_settings( - selection_widget_->GetNativeWindow()->layer()->GetAnimator()); - animation_settings.SetTransitionDuration(base::TimeDelta::FromMilliseconds( - kOverviewSelectorTransitionMilliseconds)); - animation_settings.SetPreemptionStrategy( - ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); - selection_widget_->SetBounds(target_bounds); - selection_widget_->GetNativeWindow()->layer()->SetOpacity( - kWindowOverviewSelectionOpacity); - } else { - InitializeSelectionWidget(); - selection_widget_->SetBounds(target_bounds); - selection_widget_->GetNativeWindow()->layer()->SetOpacity( - kWindowOverviewSelectionOpacity); - } - selection_index_ = index; -} - -void WindowOverview::OnWindowsChanged() { - PositionWindows(); -} - -void WindowOverview::MoveToSingleRootWindow(aura::Window* root_window) { - single_root_window_ = root_window; - PositionWindows(); -} - -void WindowOverview::OnKeyEvent(ui::KeyEvent* event) { - if (GetTargetedWindow(static_cast<aura::Window*>(event->target()))) - event->StopPropagation(); - if (event->type() != ui::ET_KEY_PRESSED) - return; - - if (event->key_code() == ui::VKEY_ESCAPE) - window_selector_->CancelSelection(); -} - -void WindowOverview::OnMouseEvent(ui::MouseEvent* event) { - aura::Window* target = GetEventTarget(event); - if (!target) - return; - - event->StopPropagation(); - if (event->type() != ui::ET_MOUSE_RELEASED) - return; - - window_selector_->SelectWindow(target); -} - -void WindowOverview::OnScrollEvent(ui::ScrollEvent* event) { - // Set the handled flag to prevent delivering scroll events to the window but - // still allowing other pretarget handlers to process the scroll event. - if (GetTargetedWindow(static_cast<aura::Window*>(event->target()))) - event->SetHandled(); -} - -void WindowOverview::OnTouchEvent(ui::TouchEvent* event) { - // Existing touches should be allowed to continue. This prevents getting - // stuck in a gesture or with pressed fingers being tracked elsewhere. - if (event->type() != ui::ET_TOUCH_PRESSED) - return; - - aura::Window* target = GetEventTarget(event); - if (!target) - return; - - // TODO(flackr): StopPropogation prevents generation of gesture events. - // We should find a better way to prevent events from being delivered to - // the window, perhaps a transparent window in front of the target window - // or using EventClientImpl::CanProcessEventsWithinSubtree and then a tap - // gesture could be used to activate the window. - event->SetHandled(); - window_selector_->SelectWindow(target); -} - -aura::Window* WindowOverview::GetEventTarget(ui::LocatedEvent* event) { - aura::Window* target = static_cast<aura::Window*>(event->target()); - // If the target window doesn't actually contain the event location (i.e. - // mouse down over the window and mouse up elsewhere) then do not select the - // window. - if (!target->HitTest(event->location())) - return NULL; - - return GetTargetedWindow(target); -} - -aura::Window* WindowOverview::GetTargetedWindow(aura::Window* window) { - for (WindowSelectorItemList::iterator iter = windows_->begin(); - iter != windows_->end(); ++iter) { - aura::Window* selected = (*iter)->TargetedWindow(window); - if (selected) - return selected; - } - return NULL; -} - -void WindowOverview::HideAndTrackNonOverviewWindows() { - aura::Window::Windows root_windows = Shell::GetAllRootWindows(); - for (aura::Window::Windows::const_iterator root_iter = root_windows.begin(); - root_iter != root_windows.end(); ++root_iter) { - for (size_t i = 0; i < kSwitchableWindowContainerIdsLength; ++i) { - aura::Window* container = Shell::GetContainer(*root_iter, - kSwitchableWindowContainerIds[i]); - // Copy the children list as it can change during iteration. - aura::Window::Windows children(container->children()); - for (aura::Window::Windows::const_iterator iter = children.begin(); - iter != children.end(); ++iter) { - if (GetTargetedWindow(*iter) || !(*iter)->IsVisible()) - continue; - ui::ScopedLayerAnimationSettings settings( - (*iter)->layer()->GetAnimator()); - settings.SetTransitionDuration(base::TimeDelta::FromMilliseconds( - ScopedTransformOverviewWindow::kTransitionMilliseconds)); - settings.SetPreemptionStrategy( - ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); - (*iter)->Hide(); - (*iter)->layer()->SetOpacity(0); - hidden_windows_.Add(*iter); - } - } - } -} - -void WindowOverview::PositionWindows() { - if (single_root_window_) { - std::vector<WindowSelectorItem*> windows; - for (WindowSelectorItemList::iterator iter = windows_->begin(); - iter != windows_->end(); ++iter) { - windows.push_back(*iter); - } - PositionWindowsOnRoot(single_root_window_, windows); - } else { - aura::Window::Windows root_window_list = Shell::GetAllRootWindows(); - for (size_t i = 0; i < root_window_list.size(); ++i) - PositionWindowsFromRoot(root_window_list[i]); - } -} - -void WindowOverview::PositionWindowsFromRoot(aura::Window* root_window) { - std::vector<WindowSelectorItem*> windows; - for (WindowSelectorItemList::iterator iter = windows_->begin(); - iter != windows_->end(); ++iter) { - if ((*iter)->GetRootWindow() == root_window) - windows.push_back(*iter); - } - PositionWindowsOnRoot(root_window, windows); -} - -void WindowOverview::PositionWindowsOnRoot( - aura::Window* root_window, - const std::vector<WindowSelectorItem*>& windows) { - if (windows.empty()) - return; - - gfx::Size window_size; - gfx::Rect total_bounds = ScreenAsh::ConvertRectToScreen(root_window, - ScreenAsh::GetDisplayWorkAreaBoundsInParent( - Shell::GetContainer(root_window, - internal::kShellWindowId_DefaultContainer))); - - // Find the minimum number of windows per row that will fit all of the - // windows on screen. - size_t columns = std::max( - total_bounds.width() > total_bounds.height() ? kMinCardsMajor : 1, - static_cast<int>(ceil(sqrt(total_bounds.width() * windows.size() / - (kCardAspectRatio * total_bounds.height()))))); - size_t rows = ((windows.size() + columns - 1) / columns); - window_size.set_width(std::min( - static_cast<int>(total_bounds.width() / columns), - static_cast<int>(total_bounds.height() * kCardAspectRatio / rows))); - window_size.set_height(window_size.width() / kCardAspectRatio); - - // Calculate the X and Y offsets necessary to center the grid. - int x_offset = total_bounds.x() + ((windows.size() >= columns ? 0 : - (columns - windows.size()) * window_size.width()) + - (total_bounds.width() - columns * window_size.width())) / 2; - int y_offset = total_bounds.y() + (total_bounds.height() - - rows * window_size.height()) / 2; - for (size_t i = 0; i < windows.size(); ++i) { - gfx::Transform transform; - int column = i % columns; - int row = i / columns; - gfx::Rect target_bounds(window_size.width() * column + x_offset, - window_size.height() * row + y_offset, - window_size.width(), - window_size.height()); - target_bounds.Inset(kWindowMargin, kWindowMargin); - windows[i]->SetBounds(root_window, target_bounds); - } -} - -void WindowOverview::InitializeSelectionWidget() { - selection_widget_.reset(new views::Widget); - views::Widget::InitParams params; - params.type = views::Widget::InitParams::TYPE_POPUP; - params.can_activate = false; - params.keep_on_top = false; - params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET; - params.opacity = views::Widget::InitParams::OPAQUE_WINDOW; - params.parent = Shell::GetContainer( - single_root_window_ ? single_root_window_ : - windows_->front()->GetRootWindow(), - internal::kShellWindowId_DefaultContainer); - params.accept_events = false; - selection_widget_->set_focus_on_creation(false); - selection_widget_->Init(params); - views::View* content_view = new views::View; - content_view->set_background( - views::Background::CreateSolidBackground(kWindowOverviewSelectionColor)); - selection_widget_->SetContentsView(content_view); - selection_widget_->Show(); - selection_widget_->GetNativeWindow()->parent()->StackChildAtBottom( - selection_widget_->GetNativeWindow()); - selection_widget_->GetNativeWindow()->layer()->SetOpacity(0); -} - -gfx::Rect WindowOverview::GetSelectionBounds(size_t index) { - gfx::Rect bounds((*windows_)[index]->bounds()); - bounds.Inset(-kWindowOverviewSelectionPadding, - -kWindowOverviewSelectionPadding); - return bounds; -} - -} // namespace ash |