Reland: mash: Convert TrayBackgroundView to wm common types

ash/system/tray/tray_background_view.cc

Index: ash/system/tray/tray_background_view.cc
diff --git a/ash/system/tray/tray_background_view.cc b/ash/system/tray/tray_background_view.cc
deleted file mode 100644
index 94180852c8b3e895789f02185909682438bf40aa..0000000000000000000000000000000000000000
--- a/ash/system/tray/tray_background_view.cc
+++ /dev/null
@@ -1,530 +0,0 @@
-// 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/system/tray/tray_background_view.h"
-
-#include "ash/common/material_design/material_design_controller.h"
-#include "ash/common/shelf/shelf_constants.h"
-#include "ash/common/shelf/wm_shelf.h"
-#include "ash/common/shelf/wm_shelf_util.h"
-#include "ash/common/shell_window_ids.h"
-#include "ash/common/system/tray/tray_constants.h"
-#include "ash/screen_util.h"
-#include "ash/shell.h"
-#include "ash/system/status_area_widget.h"
-#include "ash/system/status_area_widget_delegate.h"
-#include "ash/system/tray/system_tray.h"
-#include "ash/system/tray/tray_event_filter.h"
-#include "ash/wm/window_animations.h"
-#include "base/command_line.h"
-#include "grit/ash_resources.h"
-#include "ui/accessibility/ax_view_state.h"
-#include "ui/aura/window.h"
-#include "ui/aura/window_event_dispatcher.h"
-#include "ui/base/nine_image_painter_factory.h"
-#include "ui/base/ui_base_switches_util.h"
-#include "ui/compositor/layer.h"
-#include "ui/compositor/layer_animation_element.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-#include "ui/events/event_constants.h"
-#include "ui/gfx/animation/tween.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/gfx/image/image_skia_operations.h"
-#include "ui/gfx/nine_image_painter.h"
-#include "ui/gfx/skia_util.h"
-#include "ui/gfx/transform.h"
-#include "ui/views/background.h"
-#include "ui/views/layout/box_layout.h"
-#include "ui/wm/core/window_animations.h"
-
-namespace {
-
-const int kAnimationDurationForPopupMs = 200;
-
-// Duration of opacity animation for visibility changes.
-const int kAnimationDurationForVisibilityMs = 250;
-
-// When becoming visible delay the animation so that StatusAreaWidgetDelegate
-// can animate sibling views out of the position to be occuped by the
-// TrayBackgroundView.
-const int kShowAnimationDelayMs = 100;
-
-}  // namespace
-
-using views::TrayBubbleView;
-
-namespace ash {
-
-// static
-const char TrayBackgroundView::kViewClassName[] = "tray/TrayBackgroundView";
-
-// Used to track when the anchor widget changes position on screen so that the
-// bubble position can be updated.
-class TrayBackgroundView::TrayWidgetObserver : public views::WidgetObserver {
- public:
-  explicit TrayWidgetObserver(TrayBackgroundView* host)
-      : host_(host) {
-  }
-
-  void OnWidgetBoundsChanged(views::Widget* widget,
-                             const gfx::Rect& new_bounds) override {
-    host_->AnchorUpdated();
-  }
-
-  void OnWidgetVisibilityChanged(views::Widget* widget, bool visible) override {
-    host_->AnchorUpdated();
-  }
-
- private:
-  TrayBackgroundView* host_;
-
-  DISALLOW_COPY_AND_ASSIGN(TrayWidgetObserver);
-};
-
-class TrayBackground : public views::Background {
- public:
-  const static int kImageTypeDefault = 0;
-  const static int kImageTypeOnBlack = 1;
-  const static int kImageTypePressed = 2;
-  const static int kNumStates = 3;
-
-  const static int kImageHorizontal = 0;
-  const static int kImageVertical = 1;
-  const static int kNumOrientations = 2;
-
-  explicit TrayBackground(TrayBackgroundView* tray_background_view) :
-      tray_background_view_(tray_background_view) {
-  }
-
-  ~TrayBackground() override {}
-
- private:
-  WmShelf* GetShelf() const {
-    return tray_background_view_->GetShelf();
-  }
-
-  void PaintMaterial(gfx::Canvas* canvas, views::View* view) const {
-    SkColor background_color = SK_ColorTRANSPARENT;
-    if (GetShelf()->GetBackgroundType() ==
-        ShelfBackgroundType::SHELF_BACKGROUND_DEFAULT) {
-      background_color = SkColorSetA(kShelfBaseColor,
-                                     GetShelfConstant(SHELF_BACKGROUND_ALPHA));
-    }
-
-    // TODO(bruthig|tdanderson): The background should be changed using a
-    // fade in/out animation.
-    const int kCornerRadius = 2;
-
-    SkPaint background_paint;
-    background_paint.setFlags(SkPaint::kAntiAlias_Flag);
-    background_paint.setColor(background_color);
-    canvas->DrawRoundRect(view->GetLocalBounds(), kCornerRadius,
-                          background_paint);
-
-    if (tray_background_view_->draw_background_as_active()) {
-      SkPaint highlight_paint;
-      highlight_paint.setFlags(SkPaint::kAntiAlias_Flag);
-      highlight_paint.setColor(kShelfButtonActivatedHighlightColor);
-      canvas->DrawRoundRect(view->GetLocalBounds(), kCornerRadius,
-                            highlight_paint);
-    }
-  }
-
-  void PaintNonMaterial(gfx::Canvas* canvas, views::View* view) const {
-    const int kGridSizeForPainter = 9;
-    const int kImages[kNumOrientations][kNumStates][kGridSizeForPainter] = {
-      { // Horizontal
-        IMAGE_GRID_HORIZONTAL(IDR_AURA_TRAY_BG_HORIZ),
-        IMAGE_GRID_HORIZONTAL(IDR_AURA_TRAY_BG_HORIZ_ONBLACK),
-        IMAGE_GRID_HORIZONTAL(IDR_AURA_TRAY_BG_HORIZ_PRESSED),
-      },
-      { // Vertical
-        IMAGE_GRID_VERTICAL(IDR_AURA_TRAY_BG_VERTICAL),
-        IMAGE_GRID_VERTICAL(IDR_AURA_TRAY_BG_VERTICAL_ONBLACK),
-        IMAGE_GRID_VERTICAL(IDR_AURA_TRAY_BG_VERTICAL_PRESSED),
-      }
-    };
-
-    WmShelf* shelf = GetShelf();
-    const int orientation = IsHorizontalAlignment(shelf->GetAlignment())
-                                ? kImageHorizontal
-                                : kImageVertical;
-
-    int state = kImageTypeDefault;
-    if (tray_background_view_->draw_background_as_active())
-      state = kImageTypePressed;
-    else if (shelf->IsDimmed())
-      state = kImageTypeOnBlack;
-    else
-      state = kImageTypeDefault;
-
-    ui::CreateNineImagePainter(kImages[orientation][state])
-        ->Paint(canvas, view->GetLocalBounds());
-  }
-
-  // Overridden from views::Background.
-  void Paint(gfx::Canvas* canvas, views::View* view) const override {
-    if (MaterialDesignController::IsShelfMaterial())
-      PaintMaterial(canvas, view);
-    else
-      PaintNonMaterial(canvas, view);
-  }
-
-  // Reference to the TrayBackgroundView for which this is a background.
-  TrayBackgroundView* tray_background_view_;
-
-  DISALLOW_COPY_AND_ASSIGN(TrayBackground);
-};
-
-TrayBackgroundView::TrayContainer::TrayContainer(ShelfAlignment alignment)
-    : alignment_(alignment) {
-  UpdateLayout();
-}
-
-void TrayBackgroundView::TrayContainer::SetAlignment(ShelfAlignment alignment) {
-  if (alignment_ == alignment)
-    return;
-  alignment_ = alignment;
-  UpdateLayout();
-}
-
-gfx::Size TrayBackgroundView::TrayContainer::GetPreferredSize() const {
-  if (size_.IsEmpty())
-    return views::View::GetPreferredSize();
-  return size_;
-}
-
-void TrayBackgroundView::TrayContainer::ChildPreferredSizeChanged(
-    views::View* child) {
-  PreferredSizeChanged();
-}
-
-void TrayBackgroundView::TrayContainer::ChildVisibilityChanged(View* child) {
-  PreferredSizeChanged();
-}
-
-void TrayBackgroundView::TrayContainer::ViewHierarchyChanged(
-    const ViewHierarchyChangedDetails& details) {
-  if (details.parent == this)
-    PreferredSizeChanged();
-}
-
-// TODO(tdanderson): Adjust TrayContainer borders according to the material
-// design specs. See crbug.com/617295.
-void TrayBackgroundView::TrayContainer::UpdateLayout() {
-  // Adjust the size of status tray dark background by adding additional
-  // empty border.
-  views::BoxLayout::Orientation orientation =
-      IsHorizontalAlignment(alignment_) ? views::BoxLayout::kHorizontal
-                                        : views::BoxLayout::kVertical;
-  SetBorder(views::Border::CreateEmptyBorder(
-      kAdjustBackgroundPadding, kAdjustBackgroundPadding,
-      kAdjustBackgroundPadding, kAdjustBackgroundPadding));
-
-  views::BoxLayout* layout = new views::BoxLayout(orientation, 0, 0, 0);
-  layout->SetDefaultFlex(1);
-  views::View::SetLayoutManager(layout);
-  PreferredSizeChanged();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// TrayBackgroundView
-
-TrayBackgroundView::TrayBackgroundView(StatusAreaWidget* status_area_widget)
-    : status_area_widget_(status_area_widget),
-      tray_container_(NULL),
-      shelf_alignment_(SHELF_ALIGNMENT_BOTTOM),
-      background_(NULL),
-      draw_background_as_active_(false),
-      widget_observer_(new TrayWidgetObserver(this)) {
-  DCHECK(status_area_widget->wm_shelf());
-  set_notify_enter_exit_on_child(true);
-
-  tray_container_ = new TrayContainer(shelf_alignment_);
-  SetContents(tray_container_);
-  tray_event_filter_.reset(new TrayEventFilter);
-
-  SetPaintToLayer(true);
-  layer()->SetFillsBoundsOpaquely(false);
-  // Start the tray items not visible, because visibility changes are animated.
-  views::View::SetVisible(false);
-}
-
-TrayBackgroundView::~TrayBackgroundView() {
-  if (GetWidget())
-    GetWidget()->RemoveObserver(widget_observer_.get());
-  StopObservingImplicitAnimations();
-}
-
-void TrayBackgroundView::Initialize() {
-  GetWidget()->AddObserver(widget_observer_.get());
-}
-
-// static
-void TrayBackgroundView::InitializeBubbleAnimations(
-    views::Widget* bubble_widget) {
-  aura::Window* window = bubble_widget->GetNativeWindow();
-  ::wm::SetWindowVisibilityAnimationType(
-      window, ::wm::WINDOW_VISIBILITY_ANIMATION_TYPE_FADE);
-  ::wm::SetWindowVisibilityAnimationTransition(window, ::wm::ANIMATE_HIDE);
-  ::wm::SetWindowVisibilityAnimationDuration(
-      window, base::TimeDelta::FromMilliseconds(kAnimationDurationForPopupMs));
-}
-
-void TrayBackgroundView::SetVisible(bool visible) {
-  if (visible == layer()->GetTargetVisibility())
-    return;
-
-  if (visible) {
-    // The alignment of the shelf can change while the TrayBackgroundView is
-    // hidden. Reset the offscreen transform so that the animation to becoming
-    // visible reflects the current layout.
-    HideTransformation();
-    // SetVisible(false) is defered until the animation for hiding is done.
-    // Otherwise the view is immediately hidden and the animation does not
-    // render.
-    views::View::SetVisible(true);
-    // If SetVisible(true) is called while animating to not visible, then
-    // views::View::SetVisible(true) is a no-op. When the previous animation
-    // ends layer->SetVisible(false) is called. To prevent this
-    // layer->SetVisible(true) immediately interrupts the animation of this
-    // property, and keeps the layer visible.
-    layer()->SetVisible(true);
-  }
-
-  ui::ScopedLayerAnimationSettings animation(layer()->GetAnimator());
-  animation.SetTransitionDuration(base::TimeDelta::FromMilliseconds(
-      kAnimationDurationForVisibilityMs));
-  animation.SetPreemptionStrategy(
-      ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
-
-  if (visible) {
-    animation.SetTweenType(gfx::Tween::EASE_OUT);
-    // Show is delayed so as to allow time for other children of
-    // StatusAreaWidget to begin animating to their new positions.
-    layer()->GetAnimator()->SchedulePauseForProperties(
-        base::TimeDelta::FromMilliseconds(kShowAnimationDelayMs),
-        ui::LayerAnimationElement::OPACITY |
-        ui::LayerAnimationElement::TRANSFORM);
-    layer()->SetOpacity(1.0f);
-    gfx::Transform transform;
-    transform.Translate(0.0f, 0.0f);
-    layer()->SetTransform(transform);
-  } else {
-    // Listen only to the hide animation. As we cannot turn off visibility
-    // until the animation is over.
-    animation.AddObserver(this);
-    animation.SetTweenType(gfx::Tween::EASE_IN);
-    layer()->SetOpacity(0.0f);
-    layer()->SetVisible(false);
-    HideTransformation();
-  }
-}
-
-const char* TrayBackgroundView::GetClassName() const {
-  return kViewClassName;
-}
-
-void TrayBackgroundView::ChildPreferredSizeChanged(views::View* child) {
-  PreferredSizeChanged();
-}
-
-void TrayBackgroundView::GetAccessibleState(ui::AXViewState* state) {
-  ActionableView::GetAccessibleState(state);
-  state->name = GetAccessibleNameForTray();
-}
-
-void TrayBackgroundView::AboutToRequestFocusFromTabTraversal(bool reverse) {
-  // Return focus to the login view. See crbug.com/120500.
-  views::View* v = GetNextFocusableView();
-  if (v)
-    v->AboutToRequestFocusFromTabTraversal(reverse);
-}
-
-bool TrayBackgroundView::PerformAction(const ui::Event& event) {
-  return false;
-}
-
-gfx::Rect TrayBackgroundView::GetFocusBounds() {
-  // The tray itself expands to the right and bottom edge of the screen to make
-  // sure clicking on the edges brings up the popup. However, the focus border
-  // should be only around the container.
-  return GetContentsBounds();
-}
-
-void TrayBackgroundView::OnGestureEvent(ui::GestureEvent* event) {
-  if (switches::IsTouchFeedbackEnabled()) {
-    if (event->type() == ui::ET_GESTURE_TAP_DOWN) {
-      SetDrawBackgroundAsActive(true);
-    } else if (event->type() ==  ui::ET_GESTURE_SCROLL_BEGIN ||
-               event->type() ==  ui::ET_GESTURE_TAP_CANCEL) {
-      SetDrawBackgroundAsActive(false);
-    }
-  }
-  ActionableView::OnGestureEvent(event);
-}
-
-void TrayBackgroundView::UpdateBackground(int alpha) {
-  // The animator should never fire when the alternate shelf layout is used.
-  if (!background_ || draw_background_as_active_)
-    return;
-  SchedulePaint();
-}
-
-void TrayBackgroundView::SetContents(views::View* contents) {
-  SetLayoutManager(new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0));
-  AddChildView(contents);
-}
-void TrayBackgroundView::SetContentsBackground() {
-  background_ = new TrayBackground(this);
-  tray_container_->set_background(background_);
-}
-
-WmShelf* TrayBackgroundView::GetShelf() {
-  return status_area_widget_->wm_shelf();
-}
-
-void TrayBackgroundView::SetShelfAlignment(ShelfAlignment alignment) {
-  shelf_alignment_ = alignment;
-  tray_container_->SetAlignment(alignment);
-}
-
-void TrayBackgroundView::OnImplicitAnimationsCompleted() {
-  // If there is another animation in the queue, the reverse animation was
-  // triggered before the completion of animating to invisible. Do not turn off
-  // the visibility so that the next animation may render. The value of
-  // layer()->GetTargetVisibility() can be incorrect if the hide animation was
-  // aborted to schedule an animation to become visible. As the new animation
-  // is not yet added to the queue. crbug.com/374236
-  if(layer()->GetAnimator()->is_animating() ||
-     layer()->GetTargetVisibility())
-    return;
-  views::View::SetVisible(false);
-}
-
-bool TrayBackgroundView::RequiresNotificationWhenAnimatorDestroyed() const {
-  // This is needed so that OnImplicitAnimationsCompleted() is called even upon
-  // destruction of the animator. This can occure when parallel animations
-  // caused by ScreenRotationAnimator end before the animations of
-  // TrayBackgroundView. This allows for a proper update to the visual state of
-  // the view. (crbug.com/476667)
-  return true;
-}
-
-void TrayBackgroundView::HideTransformation() {
-  gfx::Transform transform;
-  if (IsHorizontalAlignment(shelf_alignment_))
-    transform.Translate(width(), 0.0f);
-  else
-    transform.Translate(0.0f, height());
-  layer()->SetTransform(transform);
-}
-
-gfx::Rect TrayBackgroundView::GetBubbleAnchorRect(
-    views::Widget* anchor_widget,
-    TrayBubbleView::AnchorType anchor_type,
-    TrayBubbleView::AnchorAlignment anchor_alignment) const {
-  gfx::Rect rect;
-  if (anchor_widget && anchor_widget->IsVisible()) {
-    rect = anchor_widget->GetWindowBoundsInScreen();
-    if (anchor_type == TrayBubbleView::ANCHOR_TYPE_TRAY) {
-      if (anchor_alignment == TrayBubbleView::ANCHOR_ALIGNMENT_BOTTOM) {
-        bool rtl = base::i18n::IsRTL();
-        rect.Inset(
-            rtl ? kBubblePaddingHorizontalSide : 0,
-            kBubblePaddingHorizontalBottom,
-            rtl ? 0 : kBubblePaddingHorizontalSide,
-            0);
-      } else if (anchor_alignment == TrayBubbleView::ANCHOR_ALIGNMENT_LEFT) {
-        rect.Inset(0, 0, kBubblePaddingVerticalSide + 4,
-                   kBubblePaddingVerticalBottom);
-      } else if (anchor_alignment == TrayBubbleView::ANCHOR_ALIGNMENT_RIGHT) {
-        rect.Inset(kBubblePaddingVerticalSide, 0, 0,
-                   kBubblePaddingVerticalBottom);
-      } else {
-        // TODO(bruthig) May need to handle other ANCHOR_ALIGNMENT_ values.
-        // ie. ANCHOR_ALIGNMENT_TOP
-        DCHECK(false) << "Unhandled anchor alignment.";
-      }
-    } else if (anchor_type == TrayBubbleView::ANCHOR_TYPE_BUBBLE) {
-      // Invert the offsets to align with the bubble below.
-      // Note that with the alternate shelf layout the tips are not shown and
-      // the offsets for left and right alignment do not need to be applied.
-      int vertical_alignment = 0;
-      int horizontal_alignment = kBubblePaddingVerticalBottom;
-      if (anchor_alignment == TrayBubbleView::ANCHOR_ALIGNMENT_LEFT)
-        rect.Inset(vertical_alignment, 0, 0, horizontal_alignment);
-      else if (anchor_alignment == TrayBubbleView::ANCHOR_ALIGNMENT_RIGHT)
-        rect.Inset(0, 0, vertical_alignment, horizontal_alignment);
-    } else {
-      DCHECK(false) << "Unhandled anchor type.";
-    }
-  } else {
-    aura::Window* target_root = anchor_widget ?
-        anchor_widget->GetNativeView()->GetRootWindow() :
-        Shell::GetPrimaryRootWindow();
-    rect = target_root->bounds();
-    if (anchor_type == TrayBubbleView::ANCHOR_TYPE_TRAY) {
-      if (anchor_alignment == TrayBubbleView::ANCHOR_ALIGNMENT_BOTTOM) {
-        rect = gfx::Rect(
-            base::i18n::IsRTL() ?
-            kPaddingFromRightEdgeOfScreenBottomAlignment :
-            rect.width() - kPaddingFromRightEdgeOfScreenBottomAlignment,
-            rect.height() - kPaddingFromBottomOfScreenBottomAlignment,
-            0, 0);
-        rect = ScreenUtil::ConvertRectToScreen(target_root, rect);
-      } else if (anchor_alignment == TrayBubbleView::ANCHOR_ALIGNMENT_LEFT) {
-        rect = gfx::Rect(
-            kPaddingFromRightEdgeOfScreenBottomAlignment,
-            rect.height() - kPaddingFromBottomOfScreenBottomAlignment,
-            1, 1);
-        rect = ScreenUtil::ConvertRectToScreen(target_root, rect);
-      } else if (anchor_alignment == TrayBubbleView::ANCHOR_ALIGNMENT_RIGHT) {
-        rect = gfx::Rect(
-            rect.width() - kPaddingFromRightEdgeOfScreenBottomAlignment,
-            rect.height() - kPaddingFromBottomOfScreenBottomAlignment,
-            1, 1);
-        rect = ScreenUtil::ConvertRectToScreen(target_root, rect);
-      } else {
-        // TODO(bruthig) May need to handle other ANCHOR_ALIGNMENT_ values.
-        // ie. ANCHOR_ALIGNMENT_TOP
-        DCHECK(false) << "Unhandled anchor alignment.";
-      }
-    } else {
-      rect = gfx::Rect(
-          base::i18n::IsRTL() ?
-          kPaddingFromRightEdgeOfScreenBottomAlignment :
-          rect.width() - kPaddingFromRightEdgeOfScreenBottomAlignment,
-          rect.height() - kPaddingFromBottomOfScreenBottomAlignment,
-          0, 0);
-    }
-  }
-  return rect;
-}
-
-TrayBubbleView::AnchorAlignment TrayBackgroundView::GetAnchorAlignment() const {
-  if (shelf_alignment_ == SHELF_ALIGNMENT_LEFT)
-    return TrayBubbleView::ANCHOR_ALIGNMENT_LEFT;
-  if (shelf_alignment_ == SHELF_ALIGNMENT_RIGHT)
-    return TrayBubbleView::ANCHOR_ALIGNMENT_RIGHT;
-  return TrayBubbleView::ANCHOR_ALIGNMENT_BOTTOM;
-}
-
-void TrayBackgroundView::SetDrawBackgroundAsActive(bool visible) {
-  if (draw_background_as_active_ == visible)
-    return;
-  draw_background_as_active_ = visible;
-  if (!background_)
-    return;
-  SchedulePaint();
-}
-
-void TrayBackgroundView::UpdateBubbleViewArrow(
-    views::TrayBubbleView* bubble_view) {
-  // Nothing to do here.
-}
-
-}  // namespace ash