// Copyright (c) 2012 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "ash/wm/panels/panel_layout_manager.h" #include #include #include "ash/screen_util.h" #include "ash/shelf/shelf.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/window_animations.h" #include "ash/wm/window_state.h" #include "ash/wm/window_util.h" #include "base/auto_reset.h" #include "base/bind.h" #include "base/bind_helpers.h" #include "third_party/skia/include/core/SkColor.h" #include "third_party/skia/include/core/SkPaint.h" #include "third_party/skia/include/core/SkPath.h" #include "ui/aura/client/activation_client.h" #include "ui/aura/client/focus_client.h" #include "ui/aura/client/window_tree_client.h" #include "ui/aura/window.h" #include "ui/aura/window_event_dispatcher.h" #include "ui/aura/window_tracker.h" #include "ui/compositor/scoped_layer_animation_settings.h" #include "ui/gfx/canvas.h" #include "ui/gfx/rect.h" #include "ui/gfx/vector2d.h" #include "ui/views/background.h" #include "ui/views/widget/widget.h" namespace ash { namespace internal { namespace { const int kPanelIdealSpacing = 4; const float kMaxHeightFactor = .80f; const float kMaxWidthFactor = .50f; // Duration for panel animations. const int kPanelSlideDurationMilliseconds = 50; const int kCalloutFadeDurationMilliseconds = 50; // Offset used when sliding panel in/out of the shelf. Used for minimizing, // restoring and the initial showing of a panel. const int kPanelSlideInOffset = 20; // Callout arrow dimensions. const int kArrowWidth = 18; const int kArrowHeight = 9; class CalloutWidgetBackground : public views::Background { public: CalloutWidgetBackground() : alignment_(SHELF_ALIGNMENT_BOTTOM) { } virtual void Paint(gfx::Canvas* canvas, views::View* view) const OVERRIDE { SkPath path; switch (alignment_) { case SHELF_ALIGNMENT_BOTTOM: path.moveTo(SkIntToScalar(0), SkIntToScalar(0)); path.lineTo(SkIntToScalar(kArrowWidth / 2), SkIntToScalar(kArrowHeight)); path.lineTo(SkIntToScalar(kArrowWidth), SkIntToScalar(0)); break; case SHELF_ALIGNMENT_LEFT: path.moveTo(SkIntToScalar(kArrowHeight), SkIntToScalar(kArrowWidth)); path.lineTo(SkIntToScalar(0), SkIntToScalar(kArrowWidth / 2)); path.lineTo(SkIntToScalar(kArrowHeight), SkIntToScalar(0)); break; case SHELF_ALIGNMENT_TOP: path.moveTo(SkIntToScalar(0), SkIntToScalar(kArrowHeight)); path.lineTo(SkIntToScalar(kArrowWidth / 2), SkIntToScalar(0)); path.lineTo(SkIntToScalar(kArrowWidth), SkIntToScalar(kArrowHeight)); break; case SHELF_ALIGNMENT_RIGHT: path.moveTo(SkIntToScalar(0), SkIntToScalar(0)); path.lineTo(SkIntToScalar(kArrowHeight), SkIntToScalar(kArrowWidth / 2)); path.lineTo(SkIntToScalar(0), SkIntToScalar(kArrowWidth)); break; } // Hard code the arrow color for now. SkPaint paint; paint.setStyle(SkPaint::kFill_Style); paint.setColor(SkColorSetARGB(0xff, 0xe5, 0xe5, 0xe5)); canvas->DrawPath(path, paint); } ShelfAlignment alignment() { return alignment_; } void set_alignment(ShelfAlignment alignment) { alignment_ = alignment; } private: ShelfAlignment alignment_; DISALLOW_COPY_AND_ASSIGN(CalloutWidgetBackground); }; struct VisiblePanelPositionInfo { VisiblePanelPositionInfo() : min_major(0), max_major(0), major_pos(0), major_length(0), window(NULL), slide_in(false) {} int min_major; int max_major; int major_pos; int major_length; aura::Window* window; bool slide_in; }; bool CompareWindowMajor(const VisiblePanelPositionInfo& win1, const VisiblePanelPositionInfo& win2) { return win1.major_pos < win2.major_pos; } void FanOutPanels(std::vector::iterator first, std::vector::iterator last) { int num_panels = last - first; if (num_panels == 1) { (*first).major_pos = std::max((*first).min_major, std::min( (*first).max_major, (*first).major_pos)); } if (num_panels <= 1) return; if (num_panels == 2) { // If there are two adjacent overlapping windows, separate them by the // minimum major_length necessary. std::vector::iterator second = first + 1; int separation = (*first).major_length / 2 + (*second).major_length / 2 + kPanelIdealSpacing; int overlap = (*first).major_pos + separation - (*second).major_pos; (*first).major_pos = std::max((*first).min_major, (*first).major_pos - overlap / 2); (*second).major_pos = std::min((*second).max_major, (*first).major_pos + separation); // Recalculate the first panel position in case the second one was // constrained on the right. (*first).major_pos = std::max((*first).min_major, (*second).major_pos - separation); return; } // If there are more than two overlapping windows, fan them out from minimum // position to maximum position equally spaced. int delta = ((*(last - 1)).max_major - (*first).min_major) / (num_panels - 1); int major_pos = (*first).min_major; for (std::vector::iterator iter = first; iter != last; ++iter) { (*iter).major_pos = std::max((*iter).min_major, std::min((*iter).max_major, major_pos)); major_pos += delta; } } bool BoundsAdjacent(const gfx::Rect& bounds1, const gfx::Rect& bounds2) { return bounds1.x() == bounds2.right() || bounds1.y() == bounds2.bottom() || bounds1.right() == bounds2.x() || bounds1.bottom() == bounds2.y(); } gfx::Vector2d GetSlideInAnimationOffset(ShelfAlignment alignment) { gfx::Vector2d offset; switch (alignment) { case SHELF_ALIGNMENT_BOTTOM: offset.set_y(kPanelSlideInOffset); break; case SHELF_ALIGNMENT_LEFT: offset.set_x(-kPanelSlideInOffset); break; case SHELF_ALIGNMENT_RIGHT: offset.set_x(kPanelSlideInOffset); break; case SHELF_ALIGNMENT_TOP: offset.set_y(-kPanelSlideInOffset); break; } return offset; } } // namespace class PanelCalloutWidget : public views::Widget { public: explicit PanelCalloutWidget(aura::Window* container) : background_(NULL) { InitWidget(container); } void SetAlignment(ShelfAlignment alignment) { gfx::Rect callout_bounds = GetWindowBoundsInScreen(); if (alignment == SHELF_ALIGNMENT_BOTTOM || alignment == SHELF_ALIGNMENT_TOP) { callout_bounds.set_width(kArrowWidth); callout_bounds.set_height(kArrowHeight); } else { callout_bounds.set_width(kArrowHeight); callout_bounds.set_height(kArrowWidth); } GetNativeWindow()->SetBounds(callout_bounds); if (background_->alignment() != alignment) { background_->set_alignment(alignment); SchedulePaintInRect(gfx::Rect(gfx::Point(), callout_bounds.size())); } } private: void InitWidget(aura::Window* parent) { views::Widget::InitParams params; params.type = views::Widget::InitParams::TYPE_POPUP; params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW; params.can_activate = false; params.keep_on_top = true; params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET; params.parent = parent; params.bounds = ScreenUtil::ConvertRectToScreen(parent, gfx::Rect()); params.bounds.set_width(kArrowWidth); params.bounds.set_height(kArrowHeight); // Why do we need this and can_activate = false? set_focus_on_creation(false); Init(params); DCHECK_EQ(GetNativeView()->GetRootWindow(), parent->GetRootWindow()); views::View* content_view = new views::View; background_ = new CalloutWidgetBackground; content_view->set_background(background_); SetContentsView(content_view); GetNativeWindow()->layer()->SetOpacity(0); } // Weak pointer owned by this widget's content view. CalloutWidgetBackground* background_; DISALLOW_COPY_AND_ASSIGN(PanelCalloutWidget); }; //////////////////////////////////////////////////////////////////////////////// // PanelLayoutManager public implementation: PanelLayoutManager::PanelLayoutManager(aura::Window* panel_container) : panel_container_(panel_container), in_add_window_(false), in_layout_(false), dragged_panel_(NULL), shelf_(NULL), shelf_layout_manager_(NULL), last_active_panel_(NULL), weak_factory_(this) { DCHECK(panel_container); aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())-> AddObserver(this); Shell::GetInstance()->display_controller()->AddObserver(this); Shell::GetInstance()->AddShellObserver(this); } PanelLayoutManager::~PanelLayoutManager() { Shutdown(); } void PanelLayoutManager::Shutdown() { if (shelf_layout_manager_) shelf_layout_manager_->RemoveObserver(this); shelf_layout_manager_ = NULL; for (PanelList::iterator iter = panel_windows_.begin(); iter != panel_windows_.end(); ++iter) { delete iter->callout_widget; } panel_windows_.clear(); if (shelf_) shelf_->RemoveIconObserver(this); shelf_ = NULL; aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())-> RemoveObserver(this); Shell::GetInstance()->display_controller()->RemoveObserver(this); Shell::GetInstance()->RemoveShellObserver(this); } void PanelLayoutManager::StartDragging(aura::Window* panel) { DCHECK(!dragged_panel_); dragged_panel_ = panel; Relayout(); } void PanelLayoutManager::FinishDragging() { dragged_panel_ = NULL; Relayout(); } void PanelLayoutManager::SetShelf(Shelf* shelf) { DCHECK(!shelf_); DCHECK(!shelf_layout_manager_); shelf_ = shelf; shelf_->AddIconObserver(this); if (shelf_->shelf_widget()) { shelf_layout_manager_ = ash::internal::ShelfLayoutManager::ForShelf( shelf_->shelf_widget()->GetNativeWindow()); WillChangeVisibilityState(shelf_layout_manager_->visibility_state()); shelf_layout_manager_->AddObserver(this); } } void PanelLayoutManager::ToggleMinimize(aura::Window* panel) { DCHECK(panel->parent() == panel_container_); wm::WindowState* window_state = wm::GetWindowState(panel); if (window_state->IsMinimized()) window_state->Restore(); else window_state->Minimize(); } views::Widget* PanelLayoutManager::GetCalloutWidgetForPanel( aura::Window* panel) { DCHECK(panel->parent() == panel_container_); PanelList::iterator found = std::find(panel_windows_.begin(), panel_windows_.end(), panel); DCHECK(found != panel_windows_.end()); return found->callout_widget; } //////////////////////////////////////////////////////////////////////////////// // PanelLayoutManager, aura::LayoutManager implementation: void PanelLayoutManager::OnWindowResized() { Relayout(); } void PanelLayoutManager::OnWindowAddedToLayout(aura::Window* child) { if (child->type() == ui::wm::WINDOW_TYPE_POPUP) return; if (in_add_window_) return; base::AutoReset auto_reset_in_add_window(&in_add_window_, true); if (!wm::GetWindowState(child)->panel_attached()) { // This should only happen when a window is added to panel container as a // result of bounds change from within the application during a drag. // If so we have already stopped the drag and should reparent the panel // back to appropriate container and ignore it. // TODO(varkha): Updating bounds during a drag can cause problems and a more // general solution is needed. See http://crbug.com/251813 . aura::Window* old_parent = child->parent(); aura::client::ParentWindowWithContext( child, child, child->GetRootWindow()->GetBoundsInScreen()); wm::ReparentTransientChildrenOfChild(child, old_parent, child->parent()); DCHECK(child->parent()->id() != kShellWindowId_PanelContainer); return; } PanelInfo panel_info; panel_info.window = child; panel_info.callout_widget = new PanelCalloutWidget(panel_container_); if (child != dragged_panel_) { // Set the panel to 0 opacity until it has been positioned to prevent it // from flashing briefly at position (0, 0). child->layer()->SetOpacity(0); panel_info.slide_in = true; } panel_windows_.push_back(panel_info); child->AddObserver(this); wm::GetWindowState(child)->AddObserver(this); Relayout(); } void PanelLayoutManager::OnWillRemoveWindowFromLayout(aura::Window* child) { } void PanelLayoutManager::OnWindowRemovedFromLayout(aura::Window* child) { if (child->type() == ui::wm::WINDOW_TYPE_POPUP) return; PanelList::iterator found = std::find(panel_windows_.begin(), panel_windows_.end(), child); if (found != panel_windows_.end()) { delete found->callout_widget; panel_windows_.erase(found); } child->RemoveObserver(this); wm::GetWindowState(child)->RemoveObserver(this); if (dragged_panel_ == child) dragged_panel_ = NULL; if (last_active_panel_ == child) last_active_panel_ = NULL; Relayout(); } void PanelLayoutManager::OnChildWindowVisibilityChanged(aura::Window* child, bool visible) { Relayout(); } void PanelLayoutManager::SetChildBounds(aura::Window* child, const gfx::Rect& requested_bounds) { gfx::Rect bounds(requested_bounds); const gfx::Rect& max_bounds = panel_container_->GetRootWindow()->bounds(); const int max_width = max_bounds.width() * kMaxWidthFactor; const int max_height = max_bounds.height() * kMaxHeightFactor; if (bounds.width() > max_width) bounds.set_width(max_width); if (bounds.height() > max_height) bounds.set_height(max_height); // Reposition dragged panel in the panel order. if (dragged_panel_ == child) { PanelList::iterator dragged_panel_iter = std::find(panel_windows_.begin(), panel_windows_.end(), dragged_panel_); DCHECK(dragged_panel_iter != panel_windows_.end()); PanelList::iterator new_position; for (new_position = panel_windows_.begin(); new_position != panel_windows_.end(); ++new_position) { const gfx::Rect& bounds = (*new_position).window->bounds(); if (bounds.x() + bounds.width()/2 <= requested_bounds.x()) break; } if (new_position != dragged_panel_iter) { PanelInfo dragged_panel_info = *dragged_panel_iter; panel_windows_.erase(dragged_panel_iter); panel_windows_.insert(new_position, dragged_panel_info); } } SetChildBoundsDirect(child, bounds); Relayout(); } //////////////////////////////////////////////////////////////////////////////// // PanelLayoutManager, ShelfIconObserver implementation: void PanelLayoutManager::OnShelfIconPositionsChanged() { // TODO: As this is called for every animation step now. Relayout needs to be // updated to use current icon position instead of use the ideal bounds so // that the panels slide with their icons instead of jumping. Relayout(); } //////////////////////////////////////////////////////////////////////////////// // PanelLayoutManager, ash::ShellObserver implementation: void PanelLayoutManager::OnShelfAlignmentChanged(aura::Window* root_window) { if (panel_container_->GetRootWindow() == root_window) Relayout(); } ///////////////////////////////////////////////////////////////////////////// // PanelLayoutManager, WindowObserver implementation: void PanelLayoutManager::OnPostWindowStateTypeChange( wm::WindowState* window_state, wm::WindowStateType old_type) { // If the shelf is currently hidden then windows will not actually be shown // but the set to restore when the shelf becomes visible is updated. if (restore_windows_on_shelf_visible_) { if (window_state->IsMinimized()) { MinimizePanel(window_state->window()); restore_windows_on_shelf_visible_->Remove(window_state->window()); } else { restore_windows_on_shelf_visible_->Add(window_state->window()); } return; } if (window_state->IsMinimized()) MinimizePanel(window_state->window()); else RestorePanel(window_state->window()); } void PanelLayoutManager::OnWindowVisibilityChanged( aura::Window* window, bool visible) { if (visible) wm::GetWindowState(window)->Restore(); } //////////////////////////////////////////////////////////////////////////////// // PanelLayoutManager, aura::client::ActivationChangeObserver implementation: void PanelLayoutManager::OnWindowActivated(aura::Window* gained_active, aura::Window* lost_active) { // Ignore if the panel that is not managed by this was activated. if (gained_active && gained_active->type() == ui::wm::WINDOW_TYPE_PANEL && gained_active->parent() == panel_container_) { UpdateStacking(gained_active); UpdateCallouts(); } } //////////////////////////////////////////////////////////////////////////////// // PanelLayoutManager, DisplayController::Observer implementation: void PanelLayoutManager::OnDisplayConfigurationChanged() { Relayout(); } //////////////////////////////////////////////////////////////////////////////// // PanelLayoutManager, ShelfLayoutManagerObserver implementation: void PanelLayoutManager::WillChangeVisibilityState( ShelfVisibilityState new_state) { // On entering / leaving full screen mode the shelf visibility state is // changed to / from SHELF_HIDDEN. In this state, panel windows should hide // to allow the full-screen application to use the full screen. bool shelf_hidden = new_state == ash::SHELF_HIDDEN; if (!shelf_hidden) { if (restore_windows_on_shelf_visible_) { scoped_ptr restore_windows( restore_windows_on_shelf_visible_.Pass()); for (aura::WindowTracker::Windows::const_iterator iter = restore_windows->windows().begin(); iter != restore_windows->windows().end(); ++iter) { RestorePanel(*iter); } } return; } if (restore_windows_on_shelf_visible_) return; scoped_ptr minimized_windows(new aura::WindowTracker); for (PanelList::iterator iter = panel_windows_.begin(); iter != panel_windows_.end(); ++iter) { if (iter->window->IsVisible()) { minimized_windows->Add(iter->window); wm::GetWindowState(iter->window)->Minimize(); } } restore_windows_on_shelf_visible_ = minimized_windows.Pass(); } //////////////////////////////////////////////////////////////////////////////// // PanelLayoutManager private implementation: void PanelLayoutManager::MinimizePanel(aura::Window* panel) { views::corewm::SetWindowVisibilityAnimationType( panel, WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE); ui::Layer* layer = panel->layer(); ui::ScopedLayerAnimationSettings panel_slide_settings(layer->GetAnimator()); panel_slide_settings.SetPreemptionStrategy( ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); panel_slide_settings.SetTransitionDuration( base::TimeDelta::FromMilliseconds(kPanelSlideDurationMilliseconds)); gfx::Rect bounds(panel->bounds()); bounds.Offset(GetSlideInAnimationOffset( shelf_->shelf_widget()->GetAlignment())); SetChildBoundsDirect(panel, bounds); panel->Hide(); PanelList::iterator found = std::find(panel_windows_.begin(), panel_windows_.end(), panel); if (found != panel_windows_.end()) { layer->SetOpacity(0); // The next time the window is visible it should slide into place. found->slide_in = true; } if (wm::IsActiveWindow(panel)) wm::DeactivateWindow(panel); Relayout(); } void PanelLayoutManager::RestorePanel(aura::Window* panel) { panel->Show(); Relayout(); } void PanelLayoutManager::Relayout() { if (!shelf_ || !shelf_->shelf_widget()) return; if (in_layout_) return; base::AutoReset auto_reset_in_layout(&in_layout_, true); ShelfAlignment alignment = shelf_->shelf_widget()->GetAlignment(); bool horizontal = alignment == SHELF_ALIGNMENT_TOP || alignment == SHELF_ALIGNMENT_BOTTOM; gfx::Rect shelf_bounds = ash::ScreenUtil::ConvertRectFromScreen( panel_container_, shelf_->shelf_widget()->GetWindowBoundsInScreen()); int panel_start_bounds = kPanelIdealSpacing; int panel_end_bounds = horizontal ? panel_container_->bounds().width() - kPanelIdealSpacing : panel_container_->bounds().height() - kPanelIdealSpacing; aura::Window* active_panel = NULL; std::vector visible_panels; for (PanelList::iterator iter = panel_windows_.begin(); iter != panel_windows_.end(); ++iter) { aura::Window* panel = iter->window; iter->callout_widget->SetAlignment(alignment); // Consider the dragged panel as part of the layout as long as it is // touching the shelf. if (!panel->IsVisible() || (panel == dragged_panel_ && !BoundsAdjacent(panel->bounds(), shelf_bounds))) { continue; } // If the shelf is currently hidden (full-screen mode), minimize panel until // full-screen mode is exited. When a panel is dragged from another display // the shelf state does not update before the panel is added so we exclude // the dragged panel. if (panel != dragged_panel_ && restore_windows_on_shelf_visible_) { wm::GetWindowState(panel)->Minimize(); restore_windows_on_shelf_visible_->Add(panel); continue; } gfx::Rect icon_bounds = shelf_->GetScreenBoundsOfItemIconForWindow(panel); // If both the icon width and height are 0 then there is no icon in the // shelf. If the shelf is hidden, one of the height or width will be // 0 but the position in the shelf and major dimension is still reported // correctly and the panel can be aligned above where the hidden icon is. if (icon_bounds.width() == 0 && icon_bounds.height() == 0) continue; if (panel->HasFocus() || panel->Contains( aura::client::GetFocusClient(panel)->GetFocusedWindow())) { DCHECK(!active_panel); active_panel = panel; } icon_bounds = ScreenUtil::ConvertRectFromScreen(panel_container_, icon_bounds); gfx::Point icon_origin = icon_bounds.origin(); VisiblePanelPositionInfo position_info; int icon_start = horizontal ? icon_origin.x() : icon_origin.y(); int icon_end = icon_start + (horizontal ? icon_bounds.width() : icon_bounds.height()); position_info.major_length = horizontal ? panel->bounds().width() : panel->bounds().height(); position_info.min_major = std::max( panel_start_bounds + position_info.major_length / 2, icon_end - position_info.major_length / 2); position_info.max_major = std::min( icon_start + position_info.major_length / 2, panel_end_bounds - position_info.major_length / 2); position_info.major_pos = (icon_start + icon_end) / 2; position_info.window = panel; position_info.slide_in = iter->slide_in; iter->slide_in = false; visible_panels.push_back(position_info); } // Sort panels by their X positions and fan out groups of overlapping panels. // The fan out method may result in new overlapping panels however given that // the panels start at least a full panel width apart this overlap will // never completely obscure a panel. // TODO(flackr): Rearrange panels if new overlaps are introduced. std::sort(visible_panels.begin(), visible_panels.end(), CompareWindowMajor); size_t first_overlapping_panel = 0; for (size_t i = 1; i < visible_panels.size(); ++i) { if (visible_panels[i - 1].major_pos + visible_panels[i - 1].major_length / 2 < visible_panels[i].major_pos - visible_panels[i].major_length / 2) { FanOutPanels(visible_panels.begin() + first_overlapping_panel, visible_panels.begin() + i); first_overlapping_panel = i; } } FanOutPanels(visible_panels.begin() + first_overlapping_panel, visible_panels.end()); for (size_t i = 0; i < visible_panels.size(); ++i) { if (visible_panels[i].window == dragged_panel_) continue; bool slide_in = visible_panels[i].slide_in; gfx::Rect bounds = visible_panels[i].window->GetTargetBounds(); switch (alignment) { case SHELF_ALIGNMENT_BOTTOM: bounds.set_y(shelf_bounds.y() - bounds.height()); break; case SHELF_ALIGNMENT_LEFT: bounds.set_x(shelf_bounds.right()); break; case SHELF_ALIGNMENT_RIGHT: bounds.set_x(shelf_bounds.x() - bounds.width()); break; case SHELF_ALIGNMENT_TOP: bounds.set_y(shelf_bounds.bottom()); break; } bool on_shelf = visible_panels[i].window->GetTargetBounds() == bounds; if (horizontal) { bounds.set_x(visible_panels[i].major_pos - visible_panels[i].major_length / 2); } else { bounds.set_y(visible_panels[i].major_pos - visible_panels[i].major_length / 2); } ui::Layer* layer = visible_panels[i].window->layer(); if (slide_in) { // New windows shift up from the shelf into position. gfx::Rect initial_bounds(bounds); initial_bounds.Offset(GetSlideInAnimationOffset(alignment)); SetChildBoundsDirect(visible_panels[i].window, initial_bounds); // Set on shelf so that the panel animates into its target position. on_shelf = true; } if (on_shelf) { ui::ScopedLayerAnimationSettings panel_slide_settings( layer->GetAnimator()); panel_slide_settings.SetPreemptionStrategy( ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET); panel_slide_settings.SetTransitionDuration( base::TimeDelta::FromMilliseconds(kPanelSlideDurationMilliseconds)); SetChildBoundsDirect(visible_panels[i].window, bounds); if (slide_in) layer->SetOpacity(1); } else { // If the shelf moved don't animate, move immediately to the new // target location. SetChildBoundsDirect(visible_panels[i].window, bounds); } } UpdateStacking(active_panel); UpdateCallouts(); } void PanelLayoutManager::UpdateStacking(aura::Window* active_panel) { if (!active_panel) { if (!last_active_panel_) return; active_panel = last_active_panel_; } ShelfAlignment alignment = shelf_->alignment(); bool horizontal = alignment == SHELF_ALIGNMENT_TOP || alignment == SHELF_ALIGNMENT_BOTTOM; // We want to to stack the panels like a deck of cards: // ,--,--,--,-------.--.--. // | | | | | | | // | | | | | | | // // We use the middle of each panel to figure out how to stack the panels. This // allows us to update the stacking when a panel is being dragged around by // the titlebar--even though it doesn't update the shelf icon positions, we // still want the visual effect. std::map window_ordering; for (PanelList::const_iterator it = panel_windows_.begin(); it != panel_windows_.end(); ++it) { gfx::Rect bounds = it->window->bounds(); window_ordering.insert(std::make_pair(horizontal ? bounds.x() + bounds.width() / 2 : bounds.y() + bounds.height() / 2, it->window)); } aura::Window* previous_panel = NULL; for (std::map::const_iterator it = window_ordering.begin(); it != window_ordering.end() && it->second != active_panel; ++it) { if (previous_panel) panel_container_->StackChildAbove(it->second, previous_panel); previous_panel = it->second; } previous_panel = NULL; for (std::map::const_reverse_iterator it = window_ordering.rbegin(); it != window_ordering.rend() && it->second != active_panel; ++it) { if (previous_panel) panel_container_->StackChildAbove(it->second, previous_panel); previous_panel = it->second; } panel_container_->StackChildAtTop(active_panel); if (dragged_panel_ && dragged_panel_->parent() == panel_container_) panel_container_->StackChildAtTop(dragged_panel_); last_active_panel_ = active_panel; } void PanelLayoutManager::UpdateCallouts() { ShelfAlignment alignment = shelf_->alignment(); bool horizontal = alignment == SHELF_ALIGNMENT_TOP || alignment == SHELF_ALIGNMENT_BOTTOM; for (PanelList::iterator iter = panel_windows_.begin(); iter != panel_windows_.end(); ++iter) { aura::Window* panel = iter->window; views::Widget* callout_widget = iter->callout_widget; gfx::Rect current_bounds = panel->GetBoundsInScreen(); gfx::Rect bounds = ScreenUtil::ConvertRectToScreen( panel->parent(), panel->GetTargetBounds()); gfx::Rect icon_bounds = shelf_->GetScreenBoundsOfItemIconForWindow(panel); if (icon_bounds.IsEmpty() || !panel->layer()->GetTargetVisibility() || panel == dragged_panel_) { callout_widget->Hide(); callout_widget->GetNativeWindow()->layer()->SetOpacity(0); continue; } gfx::Rect callout_bounds = callout_widget->GetWindowBoundsInScreen(); gfx::Vector2d slide_vector = bounds.origin() - current_bounds.origin(); int slide_distance = horizontal ? slide_vector.x() : slide_vector.y(); int distance_until_over_panel = 0; if (horizontal) { callout_bounds.set_x( icon_bounds.x() + (icon_bounds.width() - callout_bounds.width()) / 2); distance_until_over_panel = std::max( current_bounds.x() - callout_bounds.x(), callout_bounds.right() - current_bounds.right()); } else { callout_bounds.set_y( icon_bounds.y() + (icon_bounds.height() - callout_bounds.height()) / 2); distance_until_over_panel = std::max( current_bounds.y() - callout_bounds.y(), callout_bounds.bottom() - current_bounds.bottom()); } switch (alignment) { case SHELF_ALIGNMENT_BOTTOM: callout_bounds.set_y(bounds.bottom()); break; case SHELF_ALIGNMENT_LEFT: callout_bounds.set_x(bounds.x() - callout_bounds.width()); break; case SHELF_ALIGNMENT_RIGHT: callout_bounds.set_x(bounds.right()); break; case SHELF_ALIGNMENT_TOP: callout_bounds.set_y(bounds.y() - callout_bounds.height()); break; } callout_bounds = ScreenUtil::ConvertRectFromScreen( callout_widget->GetNativeWindow()->parent(), callout_bounds); SetChildBoundsDirect(callout_widget->GetNativeWindow(), callout_bounds); panel_container_->StackChildAbove(callout_widget->GetNativeWindow(), panel); callout_widget->Show(); ui::Layer* layer = callout_widget->GetNativeWindow()->layer(); // If the panel is not over the callout position or has just become visible // then fade in the callout. if ((distance_until_over_panel > 0 || layer->GetTargetOpacity() < 1) && panel->layer()->GetTargetTransform().IsIdentity()) { if (distance_until_over_panel > 0 && slide_distance >= distance_until_over_panel) { layer->SetOpacity(0); // If the panel is not yet over the callout, then delay fading in // the callout until after the panel should be over it. int delay = kPanelSlideDurationMilliseconds * distance_until_over_panel / slide_distance; layer->SetOpacity(0); layer->GetAnimator()->StopAnimating(); layer->GetAnimator()->SchedulePauseForProperties( base::TimeDelta::FromMilliseconds(delay), ui::LayerAnimationElement::OPACITY); } { ui::ScopedLayerAnimationSettings callout_settings(layer->GetAnimator()); callout_settings.SetPreemptionStrategy( ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS); callout_settings.SetTransitionDuration( base::TimeDelta::FromMilliseconds( kCalloutFadeDurationMilliseconds)); layer->SetOpacity(1); } } } } //////////////////////////////////////////////////////////////////////////////// // keyboard::KeyboardControllerObserver implementation: void PanelLayoutManager::OnKeyboardBoundsChanging( const gfx::Rect& keyboard_bounds) { // This bounds change will have caused a change to the Shelf which does not // propogate automatically to this class, so manually recalculate bounds. OnWindowResized(); } } // namespace internal } // namespace ash