| // Copyright (c) 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/dock/docked_window_layout_manager.h" |
| |
| #include "ash/ash_switches.h" |
| #include "ash/launcher/launcher.h" |
| #include "ash/screen_ash.h" |
| #include "ash/shelf/shelf_layout_manager.h" |
| #include "ash/shelf/shelf_types.h" |
| #include "ash/shelf/shelf_widget.h" |
| #include "ash/shell.h" |
| #include "ash/shell_window_ids.h" |
| #include "ash/wm/coordinate_conversion.h" |
| #include "ash/wm/window_animations.h" |
| #include "ash/wm/window_properties.h" |
| #include "ash/wm/window_state.h" |
| #include "ash/wm/window_util.h" |
| #include "base/auto_reset.h" |
| #include "base/command_line.h" |
| #include "third_party/skia/include/core/SkColor.h" |
| #include "ui/aura/client/activation_client.h" |
| #include "ui/aura/client/aura_constants.h" |
| #include "ui/aura/focus_manager.h" |
| #include "ui/aura/root_window.h" |
| #include "ui/aura/window.h" |
| #include "ui/aura/window_delegate.h" |
| #include "ui/compositor/scoped_layer_animation_settings.h" |
| #include "ui/gfx/rect.h" |
| |
| namespace ash { |
| namespace internal { |
| |
| // Minimum, maximum width of the dock area and a width of the gap |
| // static |
| const int DockedWindowLayoutManager::kMaxDockWidth = 360; |
| // static |
| const int DockedWindowLayoutManager::kMinDockWidth = 200; |
| // static |
| const int DockedWindowLayoutManager::kMinDockGap = 2; |
| //static |
| const int DockedWindowLayoutManager::kIdealWidth = 250; |
| //static |
| const int kMaxVisibleWindows = 2; |
| const int kSlideDurationMs = 120; |
| const int kFadeDurationMs = 720; |
| |
| namespace { |
| |
| const SkColor kDockBackgroundColor = SkColorSetARGB(0xff, 0x10, 0x10, 0x10); |
| const float kDockBackgroundOpacity = 0.5f; |
| |
| class DockedBackgroundWidget : public views::Widget { |
| public: |
| explicit DockedBackgroundWidget(aura::Window* container) { |
| InitWidget(container); |
| } |
| |
| private: |
| void InitWidget(aura::Window* parent) { |
| views::Widget::InitParams params; |
| params.type = views::Widget::InitParams::TYPE_POPUP; |
| params.opacity = views::Widget::InitParams::OPAQUE_WINDOW; |
| params.can_activate = false; |
| params.keep_on_top = false; |
| params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET; |
| params.parent = parent; |
| params.accept_events = false; |
| set_focus_on_creation(false); |
| Init(params); |
| DCHECK_EQ(GetNativeView()->GetRootWindow(), parent->GetRootWindow()); |
| views::View* content_view = new views::View; |
| content_view->set_background( |
| views::Background::CreateSolidBackground(kDockBackgroundColor)); |
| SetContentsView(content_view); |
| Hide(); |
| } |
| |
| DISALLOW_COPY_AND_ASSIGN(DockedBackgroundWidget); |
| }; |
| |
| DockedWindowLayoutManager* GetDockLayoutManager(aura::Window* window, |
| const gfx::Point& location) { |
| gfx::Rect near_location(location, gfx::Size()); |
| aura::Window* dock = Shell::GetContainer( |
| wm::GetRootWindowMatching(near_location), |
| kShellWindowId_DockedContainer); |
| return static_cast<internal::DockedWindowLayoutManager*>( |
| dock->layout_manager()); |
| } |
| |
| // Certain windows (minimized, hidden or popups) do not matter to docking. |
| bool IsUsedByLayout(aura::Window* window) { |
| return (window->IsVisible() && |
| !wm::GetWindowState(window)->IsMinimized() && |
| window->type() != aura::client::WINDOW_TYPE_POPUP); |
| } |
| |
| // A functor used to sort the windows in order of their center Y position. |
| // |delta| is a pre-calculated distance from the bottom of one window to the top |
| // of the next. Its value can be positive (gap) or negative (overlap). |
| // Half of |delta| is used as a transition point at which windows could ideally |
| // swap positions. |
| struct CompareWindowPos { |
| CompareWindowPos(aura::Window* dragged_window, float delta) |
| : dragged_window_(dragged_window), |
| delta_(delta / 2) {} |
| |
| bool operator()(aura::Window* win1, aura::Window* win2) { |
| // Use target coordinates since animations may be active when windows are |
| // reordered. |
| const gfx::Rect win1_bounds = ScreenAsh::ConvertRectToScreen( |
| win1->parent(), win1->GetTargetBounds()); |
| const gfx::Rect win2_bounds = ScreenAsh::ConvertRectToScreen( |
| win2->parent(), win2->GetTargetBounds()); |
| // If one of the windows is the |dragged_window_| attempt to make an |
| // earlier swap between the windows than just based on their centers. |
| // This is possible if the dragged window is at least as tall as the other |
| // window. |
| if (win1 == dragged_window_) |
| return compare_two_windows(win1_bounds, win2_bounds); |
| if (win2 == dragged_window_) |
| return !compare_two_windows(win2_bounds, win1_bounds); |
| // Otherwise just compare the centers. |
| return win1_bounds.CenterPoint().y() < win2_bounds.CenterPoint().y(); |
| } |
| |
| // Based on center point tries to deduce where the drag is coming from. |
| // When dragging from below up the transition point is lower. |
| // When dragging from above down the transition point is higher. |
| bool compare_bounds(const gfx::Rect dragged, const gfx::Rect other) { |
| if (dragged.CenterPoint().y() < other.CenterPoint().y()) |
| return dragged.CenterPoint().y() < other.y() - delta_; |
| return dragged.CenterPoint().y() < other.bottom() + delta_; |
| } |
| |
| // Performs comparison both ways and selects stable result. |
| bool compare_two_windows(const gfx::Rect bounds1, const gfx::Rect bounds2) { |
| // Try comparing windows in both possible orders and see if the comparison |
| // is stable. |
| bool result1 = compare_bounds(bounds1, bounds2); |
| bool result2 = compare_bounds(bounds2, bounds1); |
| if (result1 != result2) |
| return result1; |
| |
| // Otherwise it is not possible to be sure that the windows will not bounce. |
| // In this case just compare the centers. |
| return bounds1.CenterPoint().y() < bounds2.CenterPoint().y(); |
| } |
| |
| private: |
| aura::Window* dragged_window_; |
| float delta_; |
| }; |
| |
| } // namespace |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // DockLayoutManager public implementation: |
| DockedWindowLayoutManager::DockedWindowLayoutManager( |
| aura::Window* dock_container) |
| : dock_container_(dock_container), |
| in_layout_(false), |
| dragged_window_(NULL), |
| is_dragged_window_docked_(false), |
| is_dragged_from_dock_(false), |
| launcher_(NULL), |
| shelf_layout_manager_(NULL), |
| shelf_hidden_(false), |
| docked_width_(0), |
| max_visible_windows_(kMaxVisibleWindows), |
| alignment_(DOCKED_ALIGNMENT_NONE), |
| last_active_window_(NULL), |
| background_widget_(new DockedBackgroundWidget(dock_container_)) { |
| DCHECK(dock_container); |
| aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())-> |
| AddObserver(this); |
| Shell::GetInstance()->AddShellObserver(this); |
| } |
| |
| DockedWindowLayoutManager::~DockedWindowLayoutManager() { |
| Shutdown(); |
| } |
| |
| void DockedWindowLayoutManager::Shutdown() { |
| if (shelf_layout_manager_) { |
| shelf_layout_manager_->RemoveObserver(this); |
| } |
| shelf_layout_manager_ = NULL; |
| launcher_ = NULL; |
| for (size_t i = 0; i < dock_container_->children().size(); ++i) |
| dock_container_->children()[i]->RemoveObserver(this); |
| aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())-> |
| RemoveObserver(this); |
| Shell::GetInstance()->RemoveShellObserver(this); |
| } |
| |
| void DockedWindowLayoutManager::AddObserver( |
| DockedWindowLayoutManagerObserver* observer) { |
| observer_list_.AddObserver(observer); |
| } |
| |
| void DockedWindowLayoutManager::RemoveObserver( |
| DockedWindowLayoutManagerObserver* observer) { |
| observer_list_.RemoveObserver(observer); |
| } |
| |
| void DockedWindowLayoutManager::StartDragging(aura::Window* window) { |
| DCHECK(!dragged_window_); |
| dragged_window_ = window; |
| // Start observing a window unless it is docked container's child in which |
| // case it is already observed. |
| if (dragged_window_->parent() != dock_container_) |
| dragged_window_->AddObserver(this); |
| is_dragged_from_dock_ = window->parent() == dock_container_; |
| DCHECK(!is_dragged_window_docked_); |
| } |
| |
| void DockedWindowLayoutManager::DockDraggedWindow(aura::Window* window) { |
| OnWindowDocked(window); |
| Relayout(); |
| } |
| |
| void DockedWindowLayoutManager::UndockDraggedWindow() { |
| OnWindowUndocked(); |
| Relayout(); |
| UpdateDockBounds(); |
| is_dragged_from_dock_ = false; |
| } |
| |
| void DockedWindowLayoutManager::FinishDragging() { |
| DCHECK(dragged_window_); |
| if (is_dragged_window_docked_) |
| OnWindowUndocked(); |
| DCHECK (!is_dragged_window_docked_); |
| // Stop observing a window unless it is docked container's child in which |
| // case it needs to keep being observed after the drag completes. |
| if (dragged_window_->parent() != dock_container_) { |
| dragged_window_->RemoveObserver(this); |
| if (last_active_window_ == dragged_window_) |
| last_active_window_ = NULL; |
| } else { |
| // A window is no longer dragged and is a child. |
| // When a window becomes a child at drag start this is |
| // the only opportunity we will have to enforce a window |
| // count limit so do it here. |
| MaybeMinimizeChildrenExcept(dragged_window_); |
| } |
| dragged_window_ = NULL; |
| dragged_bounds_ = gfx::Rect(); |
| Relayout(); |
| UpdateDockBounds(); |
| } |
| |
| void DockedWindowLayoutManager::SetLauncher(ash::Launcher* launcher) { |
| DCHECK(!launcher_); |
| DCHECK(!shelf_layout_manager_); |
| launcher_ = launcher; |
| if (launcher_->shelf_widget()) { |
| shelf_layout_manager_ = ash::internal::ShelfLayoutManager::ForLauncher( |
| launcher_->shelf_widget()->GetNativeWindow()); |
| WillChangeVisibilityState(shelf_layout_manager_->visibility_state()); |
| shelf_layout_manager_->AddObserver(this); |
| } |
| } |
| |
| DockedAlignment DockedWindowLayoutManager::GetAlignmentOfWindow( |
| const aura::Window* window) const { |
| const gfx::Rect& bounds(window->GetBoundsInScreen()); |
| |
| // Test overlap with an existing docked area first. |
| if (docked_bounds_.Intersects(bounds) && |
| alignment_ != DOCKED_ALIGNMENT_NONE) { |
| // A window is being added to other docked windows (on the same side). |
| return alignment_; |
| } |
| |
| const gfx::Rect container_bounds = dock_container_->GetBoundsInScreen(); |
| if (bounds.x() <= container_bounds.x() && |
| bounds.right() > container_bounds.x()) { |
| return DOCKED_ALIGNMENT_LEFT; |
| } else if (bounds.x() < container_bounds.right() && |
| bounds.right() >= container_bounds.right()) { |
| return DOCKED_ALIGNMENT_RIGHT; |
| } |
| return DOCKED_ALIGNMENT_NONE; |
| } |
| |
| DockedAlignment DockedWindowLayoutManager::CalculateAlignment() const { |
| // Find a child that is not being dragged and is not a popup. |
| // If such exists the current alignment is returned - even if some of the |
| // children are hidden or minimized (so they can be restored without losing |
| // the docked state). |
| for (size_t i = 0; i < dock_container_->children().size(); ++i) { |
| aura::Window* window(dock_container_->children()[i]); |
| if (window != dragged_window_ && |
| window->type() != aura::client::WINDOW_TYPE_POPUP) { |
| return alignment_; |
| } |
| } |
| // No docked windows remain other than possibly the window being dragged. |
| // Return |NONE| to indicate that windows may get docked on either side. |
| return DOCKED_ALIGNMENT_NONE; |
| } |
| |
| bool DockedWindowLayoutManager::CanDockWindow(aura::Window* window, |
| SnapType edge) { |
| if (!CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kAshEnableDockedWindows)) { |
| return false; |
| } |
| // If a window is wide and cannot be resized down to maximum width allowed |
| // then it cannot be docked. |
| if (window->bounds().width() > kMaxDockWidth && |
| (!wm::GetWindowState(window)->CanResize() || |
| (window->delegate() && |
| window->delegate()->GetMinimumSize().width() != 0 && |
| window->delegate()->GetMinimumSize().width() > kMaxDockWidth))) { |
| return false; |
| } |
| // Cannot dock on the other size from an existing dock. |
| const DockedAlignment alignment = CalculateAlignment(); |
| if ((edge == SNAP_LEFT && alignment == DOCKED_ALIGNMENT_RIGHT) || |
| (edge == SNAP_RIGHT && alignment == DOCKED_ALIGNMENT_LEFT)) { |
| return false; |
| } |
| // Do not allow docking on the same side as launcher shelf. |
| ShelfAlignment shelf_alignment = SHELF_ALIGNMENT_BOTTOM; |
| if (launcher_) |
| shelf_alignment = launcher_->alignment(); |
| if ((edge == SNAP_LEFT && shelf_alignment == SHELF_ALIGNMENT_LEFT) || |
| (edge == SNAP_RIGHT && shelf_alignment == SHELF_ALIGNMENT_RIGHT)) { |
| return false; |
| } |
| return true; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // DockLayoutManager, aura::LayoutManager implementation: |
| void DockedWindowLayoutManager::OnWindowResized() { |
| Relayout(); |
| // When screen resizes update the insets even when dock width or alignment |
| // does not change. |
| UpdateDockBounds(); |
| } |
| |
| void DockedWindowLayoutManager::OnWindowAddedToLayout(aura::Window* child) { |
| if (child->type() == aura::client::WINDOW_TYPE_POPUP) |
| return; |
| // Dragged windows are already observed by StartDragging and do not change |
| // docked alignment during the drag. |
| if (child == dragged_window_) |
| return; |
| // If this is the first window getting docked - update alignment. |
| if (alignment_ == DOCKED_ALIGNMENT_NONE) { |
| alignment_ = GetAlignmentOfWindow(child); |
| DCHECK(alignment_ != DOCKED_ALIGNMENT_NONE); |
| } |
| MaybeMinimizeChildrenExcept(child); |
| child->AddObserver(this); |
| Relayout(); |
| UpdateDockBounds(); |
| } |
| |
| void DockedWindowLayoutManager::OnWindowRemovedFromLayout(aura::Window* child) { |
| if (child->type() == aura::client::WINDOW_TYPE_POPUP) |
| return; |
| // Dragged windows are stopped being observed by FinishDragging and do not |
| // change alignment during the drag. They also cannot be set to be the |
| // |last_active_window_|. |
| if (child == dragged_window_) |
| return; |
| // If this is the last window, set alignment and maximize the workspace. |
| if (!IsAnyWindowDocked()) { |
| alignment_ = DOCKED_ALIGNMENT_NONE; |
| docked_width_ = 0; |
| } |
| if (last_active_window_ == child) |
| last_active_window_ = NULL; |
| child->RemoveObserver(this); |
| Relayout(); |
| } |
| |
| void DockedWindowLayoutManager::OnChildWindowVisibilityChanged( |
| aura::Window* child, |
| bool visible) { |
| if (child->type() == aura::client::WINDOW_TYPE_POPUP) |
| return; |
| if (visible) |
| child->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_NORMAL); |
| Relayout(); |
| UpdateDockBounds(); |
| } |
| |
| void DockedWindowLayoutManager::SetChildBounds( |
| aura::Window* child, |
| const gfx::Rect& requested_bounds) { |
| // Whenever one of our windows is moved or resized enforce layout. |
| SetChildBoundsDirect(child, requested_bounds); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // DockLayoutManager, ash::ShellObserver implementation: |
| |
| void DockedWindowLayoutManager::OnShelfAlignmentChanged( |
| aura::RootWindow* root_window) { |
| if (dock_container_->GetRootWindow() != root_window) |
| return; |
| |
| if (!launcher_ || !launcher_->shelf_widget()) |
| return; |
| |
| if (alignment_ == DOCKED_ALIGNMENT_NONE) |
| return; |
| |
| // Do not allow launcher and dock on the same side. Switch side that |
| // the dock is attached to and move all dock windows to that new side. |
| ShelfAlignment shelf_alignment = launcher_->shelf_widget()->GetAlignment(); |
| if (alignment_ == DOCKED_ALIGNMENT_LEFT && |
| shelf_alignment == SHELF_ALIGNMENT_LEFT) { |
| alignment_ = DOCKED_ALIGNMENT_RIGHT; |
| } else if (alignment_ == DOCKED_ALIGNMENT_RIGHT && |
| shelf_alignment == SHELF_ALIGNMENT_RIGHT) { |
| alignment_ = DOCKED_ALIGNMENT_LEFT; |
| } |
| Relayout(); |
| UpdateDockBounds(); |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| // DockLayoutManager, WindowObserver implementation: |
| |
| void DockedWindowLayoutManager::OnWindowPropertyChanged(aura::Window* window, |
| const void* key, |
| intptr_t old) { |
| if (key != aura::client::kShowStateKey) |
| return; |
| // The window property will still be set, but no actual change will occur |
| // until WillChangeVisibilityState is called when the shelf is visible again |
| if (shelf_hidden_) |
| return; |
| if (wm::GetWindowState(window)->IsMinimized()) |
| MinimizeDockedWindow(window); |
| else |
| RestoreDockedWindow(window); |
| } |
| |
| void DockedWindowLayoutManager::OnWindowBoundsChanged( |
| aura::Window* window, |
| const gfx::Rect& old_bounds, |
| const gfx::Rect& new_bounds) { |
| // Only relayout if the dragged window would get docked. |
| if (window == dragged_window_ && is_dragged_window_docked_) |
| Relayout(); |
| } |
| |
| void DockedWindowLayoutManager::OnWindowVisibilityChanging( |
| aura::Window* window, bool visible) { |
| int animation_type = WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE; |
| if (visible) { |
| animation_type = views::corewm::WINDOW_VISIBILITY_ANIMATION_TYPE_DEFAULT; |
| views::corewm::SetWindowVisibilityAnimationDuration( |
| window, base::TimeDelta::FromMilliseconds(kFadeDurationMs)); |
| } |
| views::corewm::SetWindowVisibilityAnimationType(window, animation_type); |
| } |
| |
| void DockedWindowLayoutManager::OnWindowDestroying(aura::Window* window) { |
| if (dragged_window_ == window) { |
| FinishDragging(); |
| DCHECK(!dragged_window_); |
| DCHECK (!is_dragged_window_docked_); |
| } |
| if (window == last_active_window_) |
| last_active_window_ = NULL; |
| } |
| |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // DockLayoutManager, aura::client::ActivationChangeObserver implementation: |
| |
| void DockedWindowLayoutManager::OnWindowActivated(aura::Window* gained_active, |
| aura::Window* lost_active) { |
| // Ignore if the window that is not managed by this was activated. |
| aura::Window* ancestor = NULL; |
| for (aura::Window* parent = gained_active; |
| parent; parent = parent->parent()) { |
| if (parent->parent() == dock_container_) { |
| ancestor = parent; |
| break; |
| } |
| } |
| if (ancestor) |
| UpdateStacking(ancestor); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // DockLayoutManager, ShelfLayoutManagerObserver implementation: |
| |
| void DockedWindowLayoutManager::WillChangeVisibilityState( |
| ShelfVisibilityState new_state) { |
| // On entering / leaving full screen mode the shelf visibility state is |
| // changed to / from SHELF_HIDDEN. In this state, docked windows should hide |
| // to allow the full-screen application to use the full screen. |
| |
| // TODO(varkha): ShelfLayoutManager::UpdateVisibilityState sets state to |
| // SHELF_AUTO_HIDE when in immersive mode. Distinguish this from |
| // when shelf enters auto-hide state based on mouse hover when auto-hide |
| // setting is enabled and hide all windows (immersive mode should hide docked |
| // windows). |
| shelf_hidden_ = new_state == ash::SHELF_HIDDEN; |
| { |
| // prevent Relayout from getting called multiple times during this |
| base::AutoReset<bool> auto_reset_in_layout(&in_layout_, true); |
| for (size_t i = 0; i < dock_container_->children().size(); ++i) { |
| aura::Window* window = dock_container_->children()[i]; |
| if (window->type() == aura::client::WINDOW_TYPE_POPUP) |
| continue; |
| if (shelf_hidden_) { |
| if (window->IsVisible()) |
| MinimizeDockedWindow(window); |
| } else { |
| if (!wm::GetWindowState(window)->IsMinimized()) |
| RestoreDockedWindow(window); |
| } |
| } |
| } |
| Relayout(); |
| UpdateDockBounds(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // DockLayoutManager private implementation: |
| |
| void DockedWindowLayoutManager::MaybeMinimizeChildrenExcept( |
| aura::Window* child) { |
| // Account for the |child| by initializing to 1. |
| int child_index = 1; |
| aura::Window::Windows children(dock_container_->children()); |
| aura::Window::Windows::const_reverse_iterator iter = children.rbegin(); |
| while (iter != children.rend()) { |
| aura::Window* window(*iter++); |
| if (window == child || !IsUsedByLayout(window)) |
| continue; |
| if (++child_index > max_visible_windows_) |
| wm::GetWindowState(window)->Minimize(); |
| } |
| } |
| |
| void DockedWindowLayoutManager::MinimizeDockedWindow(aura::Window* window) { |
| DCHECK_NE(window->type(), aura::client::WINDOW_TYPE_POPUP); |
| window->Hide(); |
| wm::WindowState* window_state = wm::GetWindowState(window); |
| if (window_state->IsActive()) |
| window_state->Deactivate(); |
| } |
| |
| void DockedWindowLayoutManager::RestoreDockedWindow(aura::Window* window) { |
| DCHECK_NE(window->type(), aura::client::WINDOW_TYPE_POPUP); |
| // Always place restored window at the top shuffling the other windows down. |
| // TODO(varkha): add a separate container for docked windows to keep track |
| // of ordering. |
| gfx::Display display = Shell::GetScreen()->GetDisplayNearestWindow( |
| dock_container_); |
| const gfx::Rect work_area = display.work_area(); |
| gfx::Rect bounds(window->bounds()); |
| bounds.set_y(work_area.y() - bounds.height()); |
| window->SetBounds(bounds); |
| window->Show(); |
| MaybeMinimizeChildrenExcept(window); |
| } |
| |
| void DockedWindowLayoutManager::OnWindowDocked(aura::Window* window) { |
| DCHECK(!is_dragged_window_docked_); |
| is_dragged_window_docked_ = true; |
| |
| // If there are no other docked windows update alignment. |
| if (!IsAnyWindowDocked()) |
| alignment_ = DOCKED_ALIGNMENT_NONE; |
| } |
| |
| void DockedWindowLayoutManager::OnWindowUndocked() { |
| // If this is the first window getting docked - update alignment. |
| if (!IsAnyWindowDocked()) |
| alignment_ = GetAlignmentOfWindow(dragged_window_); |
| |
| DCHECK (is_dragged_window_docked_); |
| is_dragged_window_docked_ = false; |
| } |
| |
| bool DockedWindowLayoutManager::IsAnyWindowDocked() { |
| return CalculateAlignment() != DOCKED_ALIGNMENT_NONE; |
| } |
| |
| // static |
| int DockedWindowLayoutManager::GetWindowWidthCloseTo(aura::Window* window, |
| int target_width) { |
| if (!wm::GetWindowState(window)->CanResize()) { |
| DCHECK_LE(window->bounds().width(), kMaxDockWidth); |
| return window->bounds().width(); |
| } |
| int width = std::max(kMinDockWidth, std::min(target_width, kMaxDockWidth)); |
| if (window->delegate()) { |
| if (window->delegate()->GetMinimumSize().width() != 0) |
| width = std::max(width, window->delegate()->GetMinimumSize().width()); |
| if (window->delegate()->GetMaximumSize().width() != 0) |
| width = std::min(width, window->delegate()->GetMaximumSize().width()); |
| } |
| DCHECK_LE(width, kMaxDockWidth); |
| return width; |
| } |
| |
| void DockedWindowLayoutManager::Relayout() { |
| if (in_layout_) |
| return; |
| if (alignment_ == DOCKED_ALIGNMENT_NONE && !is_dragged_window_docked_) |
| return; |
| base::AutoReset<bool> auto_reset_in_layout(&in_layout_, true); |
| |
| gfx::Rect dock_bounds = dock_container_->GetBoundsInScreen(); |
| aura::Window* active_window = NULL; |
| aura::Window::Windows visible_windows; |
| for (size_t i = 0; i < dock_container_->children().size(); ++i) { |
| aura::Window* window(dock_container_->children()[i]); |
| |
| if (!IsUsedByLayout(window) || window == dragged_window_) |
| continue; |
| |
| // If the shelf is currently hidden (full-screen mode), hide window until |
| // full-screen mode is exited. |
| if (shelf_hidden_) { |
| // The call to Hide does not set the minimize property, so the window will |
| // be restored when the shelf becomes visible again. |
| window->Hide(); |
| continue; |
| } |
| if (window->HasFocus() || |
| window->Contains( |
| aura::client::GetFocusClient(window)->GetFocusedWindow())) { |
| DCHECK(!active_window); |
| active_window = window; |
| } |
| visible_windows.push_back(window); |
| } |
| |
| // Consider docked dragged_window_ when fanning out other child windows. |
| if (is_dragged_window_docked_) { |
| visible_windows.push_back(dragged_window_); |
| DCHECK(!active_window); |
| active_window = dragged_window_; |
| } |
| |
| // Calculate free space or overlap. |
| gfx::Display display = Shell::GetScreen()->GetDisplayNearestWindow( |
| dock_container_); |
| const gfx::Rect work_area = display.work_area(); |
| int available_room = work_area.height(); |
| int ideal_docked_width = 0; |
| for (aura::Window::Windows::const_iterator iter = visible_windows.begin(); |
| iter != visible_windows.end(); ++iter) { |
| aura::Window* window = *iter; |
| available_room -= window->bounds().height(); |
| |
| // Adjust the dragged window to the dock. If that is not possible then |
| // other docked windows area adjusted to the one that is being dragged. |
| int adjusted_docked_width = window->bounds().width(); |
| if (window == dragged_window_) { |
| // Adjust the dragged window width to the current dock size or ideal when |
| // there are no other docked windows. |
| adjusted_docked_width = GetWindowWidthCloseTo( |
| window, (docked_width_ > 0) ? docked_width_ : kIdealWidth); |
| } else if (!is_dragged_from_dock_ && is_dragged_window_docked_) { |
| // When a docked window is dragged-in other docked windows' widths are |
| // adjusted to the new width if necessary. |
| // When there is no dragged docked window the docked windows retain their |
| // widths. |
| // When a dragged window is simply being reordered in the docked area the |
| // other windows are not resized (but the dragged window can be). |
| adjusted_docked_width = GetWindowWidthCloseTo(window, 0); |
| } |
| ideal_docked_width = std::max(ideal_docked_width, adjusted_docked_width); |
| |
| // Restrict docked area width regardless of window restrictions. |
| ideal_docked_width = std::max(std::min(ideal_docked_width, kMaxDockWidth), |
| kMinDockWidth); |
| } |
| const int num_windows = visible_windows.size(); |
| const float delta = (float)available_room / |
| ((available_room > 0 || num_windows <= 1) ? |
| num_windows + 1 : num_windows - 1); |
| float y_pos = work_area.y() + ((available_room > 0) ? delta : 0); |
| |
| // Docked area is shown only if there is at least one non-dragged visible |
| // docked window. |
| docked_width_ = ideal_docked_width; |
| if (visible_windows.empty() || |
| (visible_windows.size() == 1 && visible_windows[0] == dragged_window_)) { |
| docked_width_ = 0; |
| } |
| |
| // Sort windows by their center positions and fan out overlapping |
| // windows. |
| std::sort(visible_windows.begin(), |
| visible_windows.end(), |
| CompareWindowPos(is_dragged_from_dock_ ? dragged_window_ : NULL, |
| delta)); |
| for (aura::Window::Windows::const_iterator iter = visible_windows.begin(); |
| iter != visible_windows.end(); ++iter) { |
| aura::Window* window = *iter; |
| gfx::Rect bounds = ScreenAsh::ConvertRectToScreen( |
| window->parent(), window->GetTargetBounds()); |
| // A window is extended or shrunk to be as close as possible to the docked |
| // area width. Windows other than the dragged window are kept at their |
| // existing size when the dragged window is just being reordered. |
| // This also enforces the min / max restrictions on the docked area width. |
| bounds.set_width(GetWindowWidthCloseTo( |
| window, |
| (!is_dragged_from_dock_ || window == dragged_window_) ? |
| ideal_docked_width : bounds.width())); |
| DCHECK_LE(bounds.width(), ideal_docked_width); |
| |
| DockedAlignment alignment = alignment_; |
| if (alignment == DOCKED_ALIGNMENT_NONE && window == dragged_window_) { |
| alignment = GetAlignmentOfWindow(window); |
| if (alignment == DOCKED_ALIGNMENT_NONE) |
| bounds.set_size(gfx::Size()); |
| } |
| |
| // Fan out windows evenly distributing the overlap or remaining free space. |
| bounds.set_y(std::max(work_area.y(), |
| std::min(work_area.bottom() - bounds.height(), |
| static_cast<int>(y_pos + 0.5)))); |
| y_pos += bounds.height() + delta; |
| |
| // All docked windows other than the one currently dragged remain stuck |
| // to the screen edge (flush with the edge or centered in the dock area). |
| switch (alignment) { |
| case DOCKED_ALIGNMENT_LEFT: |
| bounds.set_x(dock_bounds.x() + |
| (ideal_docked_width - bounds.width()) / 2); |
| break; |
| case DOCKED_ALIGNMENT_RIGHT: |
| bounds.set_x(dock_bounds.right() - |
| (ideal_docked_width + bounds.width()) / 2); |
| break; |
| case DOCKED_ALIGNMENT_NONE: |
| break; |
| } |
| if (window == dragged_window_) { |
| dragged_bounds_ = bounds; |
| continue; |
| } |
| // If the following asserts it is probably because not all the children |
| // have been removed when dock was closed. |
| DCHECK_NE(alignment_, DOCKED_ALIGNMENT_NONE); |
| bounds = ScreenAsh::ConvertRectFromScreen(dock_container_, bounds); |
| if (bounds != window->GetTargetBounds()) { |
| ui::Layer* layer = window->layer(); |
| ui::ScopedLayerAnimationSettings slide_settings(layer->GetAnimator()); |
| slide_settings.SetPreemptionStrategy( |
| ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); |
| slide_settings.SetTransitionDuration( |
| base::TimeDelta::FromMilliseconds(kSlideDurationMs)); |
| SetChildBoundsDirect(window, bounds); |
| } |
| } |
| is_dragged_from_dock_ = true; |
| UpdateStacking(active_window); |
| } |
| |
| void DockedWindowLayoutManager::UpdateDockBounds() { |
| int dock_inset = docked_width_ + (docked_width_ > 0 ? kMinDockGap : 0); |
| gfx::Rect bounds = gfx::Rect( |
| alignment_ == DOCKED_ALIGNMENT_RIGHT && dock_inset > 0 ? |
| dock_container_->bounds().right() - dock_inset: |
| dock_container_->bounds().x(), |
| dock_container_->bounds().y(), |
| dock_inset, |
| dock_container_->bounds().height()); |
| docked_bounds_ = bounds + |
| dock_container_->GetBoundsInScreen().OffsetFromOrigin(); |
| FOR_EACH_OBSERVER( |
| DockedWindowLayoutManagerObserver, |
| observer_list_, |
| OnDockBoundsChanging(bounds)); |
| |
| // Show or hide background for docked area. |
| gfx::Rect background_bounds(docked_bounds_); |
| const gfx::Rect work_area = |
| Shell::GetScreen()->GetDisplayNearestWindow(dock_container_).work_area(); |
| background_bounds.set_height(work_area.height()); |
| background_widget_->SetBounds(background_bounds); |
| if (docked_width_ > 0) { |
| background_widget_->Show(); |
| background_widget_->GetNativeWindow()->layer()->SetOpacity( |
| kDockBackgroundOpacity); |
| } else { |
| background_widget_->Hide(); |
| } |
| } |
| |
| void DockedWindowLayoutManager::UpdateStacking(aura::Window* active_window) { |
| if (!active_window) { |
| if (!last_active_window_) |
| return; |
| active_window = last_active_window_; |
| } |
| |
| // Windows are stacked like a deck of cards: |
| // ,------. |
| // |,------.| |
| // |,------.| |
| // | active | |
| // | window | |
| // |`------'| |
| // |`------'| |
| // `------' |
| // Use the middle of each window to figure out how to stack the window. |
| // This allows us to update the stacking when a window is being dragged around |
| // by the titlebar. |
| std::map<int, aura::Window*> window_ordering; |
| for (aura::Window::Windows::const_iterator it = |
| dock_container_->children().begin(); |
| it != dock_container_->children().end(); ++it) { |
| if (!IsUsedByLayout(*it) || |
| ((*it) == dragged_window_ && !is_dragged_window_docked_)) { |
| continue; |
| } |
| gfx::Rect bounds = (*it)->bounds(); |
| window_ordering.insert(std::make_pair(bounds.y() + bounds.height() / 2, |
| *it)); |
| } |
| int active_center_y = active_window->bounds().CenterPoint().y(); |
| |
| aura::Window* previous_window = NULL; |
| for (std::map<int, aura::Window*>::const_iterator it = |
| window_ordering.begin(); |
| it != window_ordering.end() && it->first < active_center_y; ++it) { |
| if (previous_window) |
| dock_container_->StackChildAbove(it->second, previous_window); |
| previous_window = it->second; |
| } |
| for (std::map<int, aura::Window*>::const_reverse_iterator it = |
| window_ordering.rbegin(); |
| it != window_ordering.rend() && it->first > active_center_y; ++it) { |
| if (previous_window) |
| dock_container_->StackChildAbove(it->second, previous_window); |
| previous_window = it->second; |
| } |
| |
| if (previous_window && active_window->parent() == dock_container_) |
| dock_container_->StackChildAbove(active_window, previous_window); |
| if (active_window != dragged_window_) |
| last_active_window_ = active_window; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // keyboard::KeyboardControllerObserver implementation: |
| |
| void DockedWindowLayoutManager::OnKeyboardBoundsChanging( |
| const gfx::Rect& keyboard_bounds) { |
| // This bounds change will have caused a change to the Shelf which does not |
| // propagate automatically to this class, so manually recalculate bounds. |
| UpdateDockBounds(); |
| } |
| |
| } // namespace internal |
| } // namespace ash |