chromeos: Move files in //ash/common to //ash, part 2

ash/common/shelf/shelf_button.cc

Index: ash/common/shelf/shelf_button.cc
diff --git a/ash/common/shelf/shelf_button.cc b/ash/common/shelf/shelf_button.cc
deleted file mode 100644
index d5d32ff71833d2f7f240a64f9a353a5e7ff079d6..0000000000000000000000000000000000000000
--- a/ash/common/shelf/shelf_button.cc
+++ /dev/null
@@ -1,514 +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/common/shelf/shelf_button.h"
-
-#include <algorithm>
-
-#include "ash/common/ash_constants.h"
-#include "ash/common/shelf/ink_drop_button_listener.h"
-#include "ash/common/shelf/shelf_constants.h"
-#include "ash/common/shelf/shelf_view.h"
-#include "ash/common/shelf/wm_shelf.h"
-#include "base/memory/ptr_util.h"
-#include "base/time/time.h"
-#include "skia/ext/image_operations.h"
-#include "ui/accessibility/ax_node_data.h"
-#include "ui/compositor/layer.h"
-#include "ui/gfx/animation/animation_delegate.h"
-#include "ui/gfx/animation/throb_animation.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/geometry/vector2d.h"
-#include "ui/gfx/image/image_skia_operations.h"
-#include "ui/gfx/scoped_canvas.h"
-#include "ui/gfx/skbitmap_operations.h"
-#include "ui/views/animation/ink_drop_impl.h"
-#include "ui/views/animation/square_ink_drop_ripple.h"
-#include "ui/views/controls/image_view.h"
-
-namespace {
-
-const int kIconSize = 32;
-const int kAttentionThrobDurationMS = 800;
-const int kMaxAnimationSeconds = 10;
-const int kIndicatorOffsetFromBottom = 3;
-const int kIndicatorRadiusDip = 2;
-const SkColor kIndicatorColor = SK_ColorWHITE;
-
-// Shelf item ripple constants.
-const int kInkDropSmallSize = 48;
-const int kInkDropLargeSize = 60;
-
-// Padding from the edge of the shelf to the application icon when the shelf
-// is horizontally and vertically aligned, respectively.
-const int kIconPaddingHorizontal = 7;
-const int kIconPaddingVertical = 8;
-
-// Simple AnimationDelegate that owns a single ThrobAnimation instance to
-// keep all Draw Attention animations in sync.
-class ShelfButtonAnimation : public gfx::AnimationDelegate {
- public:
-  class Observer {
-   public:
-    virtual void AnimationProgressed() = 0;
-
-   protected:
-    virtual ~Observer() {}
-  };
-
-  static ShelfButtonAnimation* GetInstance() {
-    static ShelfButtonAnimation* s_instance = new ShelfButtonAnimation();
-    return s_instance;
-  }
-
-  void AddObserver(Observer* observer) { observers_.AddObserver(observer); }
-
-  void RemoveObserver(Observer* observer) {
-    observers_.RemoveObserver(observer);
-    if (!observers_.might_have_observers())
-      animation_.Stop();
-  }
-
-  bool HasObserver(Observer* observer) const {
-    return observers_.HasObserver(observer);
-  }
-
-  SkAlpha GetAlpha() {
-    return GetThrobAnimation().CurrentValueBetween(SK_AlphaTRANSPARENT,
-                                                   SK_AlphaOPAQUE);
-  }
-
-  double GetAnimation() { return GetThrobAnimation().GetCurrentValue(); }
-
- private:
-  ShelfButtonAnimation() : animation_(this) {
-    animation_.SetThrobDuration(kAttentionThrobDurationMS);
-    animation_.SetTweenType(gfx::Tween::SMOOTH_IN_OUT);
-  }
-
-  ~ShelfButtonAnimation() override {}
-
-  gfx::ThrobAnimation& GetThrobAnimation() {
-    if (!animation_.is_animating()) {
-      animation_.Reset();
-      animation_.StartThrobbing(-1 /*throb indefinitely*/);
-    }
-    return animation_;
-  }
-
-  // gfx::AnimationDelegate
-  void AnimationProgressed(const gfx::Animation* animation) override {
-    if (animation != &animation_)
-      return;
-    if (!animation_.is_animating())
-      return;
-    for (auto& observer : observers_)
-      observer.AnimationProgressed();
-  }
-
-  gfx::ThrobAnimation animation_;
-  base::ObserverList<Observer> observers_;
-
-  DISALLOW_COPY_AND_ASSIGN(ShelfButtonAnimation);
-};
-
-}  // namespace
-
-namespace ash {
-
-////////////////////////////////////////////////////////////////////////////////
-// ShelfButton::AppStatusIndicatorView
-
-class ShelfButton::AppStatusIndicatorView
-    : public views::View,
-      public ShelfButtonAnimation::Observer {
- public:
-  AppStatusIndicatorView()
-      : show_attention_(false), animation_end_time_(base::TimeTicks()) {
-    // Make sure the events reach the parent view for handling.
-    set_can_process_events_within_subtree(false);
-  }
-
-  ~AppStatusIndicatorView() override {
-    ShelfButtonAnimation::GetInstance()->RemoveObserver(this);
-  }
-
-  // views::View:
-  void OnPaint(gfx::Canvas* canvas) override {
-    gfx::ScopedCanvas scoped(canvas);
-    if (show_attention_) {
-      SkAlpha alpha = ShelfButtonAnimation::GetInstance()->HasObserver(this)
-                          ? ShelfButtonAnimation::GetInstance()->GetAlpha()
-                          : SK_AlphaOPAQUE;
-      canvas->SaveLayerAlpha(alpha);
-    }
-
-    DCHECK_EQ(width(), height());
-    DCHECK_EQ(kIndicatorRadiusDip, width() / 2);
-    const float dsf = canvas->UndoDeviceScaleFactor();
-    const int kStrokeWidthPx = 1;
-    gfx::PointF center = gfx::RectF(GetLocalBounds()).CenterPoint();
-    center.Scale(dsf);
-
-    // Fill the center.
-    cc::PaintFlags flags;
-    flags.setColor(kIndicatorColor);
-    flags.setFlags(cc::PaintFlags::kAntiAlias_Flag);
-    canvas->DrawCircle(center, dsf * kIndicatorRadiusDip - kStrokeWidthPx,
-                       flags);
-
-    // Stroke the border.
-    flags.setColor(SkColorSetA(SK_ColorBLACK, 0x4D));
-    flags.setStyle(SkPaint::kStroke_Style);
-    canvas->DrawCircle(
-        center, dsf * kIndicatorRadiusDip - kStrokeWidthPx / 2.0f, flags);
-  }
-
-  // ShelfButtonAnimation::Observer
-  void AnimationProgressed() override {
-    UpdateAnimating();
-    SchedulePaint();
-  }
-
-  void ShowAttention(bool show) {
-    if (show_attention_ == show)
-      return;
-
-    show_attention_ = show;
-    if (show_attention_) {
-      animation_end_time_ = base::TimeTicks::Now() +
-                            base::TimeDelta::FromSeconds(kMaxAnimationSeconds);
-      ShelfButtonAnimation::GetInstance()->AddObserver(this);
-    } else {
-      ShelfButtonAnimation::GetInstance()->RemoveObserver(this);
-    }
-  }
-
- private:
-  void UpdateAnimating() {
-    if (base::TimeTicks::Now() > animation_end_time_)
-      ShelfButtonAnimation::GetInstance()->RemoveObserver(this);
-  }
-
-  bool show_attention_;
-  base::TimeTicks animation_end_time_;  // For attention throbbing underline.
-
-  DISALLOW_COPY_AND_ASSIGN(AppStatusIndicatorView);
-};
-
-////////////////////////////////////////////////////////////////////////////////
-// ShelfButton
-
-// static
-const char ShelfButton::kViewClassName[] = "ash/ShelfButton";
-
-ShelfButton::ShelfButton(InkDropButtonListener* listener, ShelfView* shelf_view)
-    : CustomButton(nullptr),
-      listener_(listener),
-      shelf_view_(shelf_view),
-      icon_view_(new views::ImageView()),
-      indicator_(new AppStatusIndicatorView()),
-      state_(STATE_NORMAL),
-      destroyed_flag_(nullptr) {
-  SetFocusBehavior(FocusBehavior::ACCESSIBLE_ONLY);
-  SetInkDropMode(InkDropMode::ON);
-  set_ink_drop_base_color(kShelfInkDropBaseColor);
-  set_ink_drop_visible_opacity(kShelfInkDropVisibleOpacity);
-
-  const gfx::ShadowValue kShadows[] = {
-      gfx::ShadowValue(gfx::Vector2d(0, 2), 0, SkColorSetARGB(0x1A, 0, 0, 0)),
-      gfx::ShadowValue(gfx::Vector2d(0, 3), 1, SkColorSetARGB(0x1A, 0, 0, 0)),
-      gfx::ShadowValue(gfx::Vector2d(0, 0), 1, SkColorSetARGB(0x54, 0, 0, 0)),
-  };
-  icon_shadows_.assign(kShadows, kShadows + arraysize(kShadows));
-
-  // TODO: refactor the layers so each button doesn't require 2.
-  icon_view_->SetPaintToLayer();
-  icon_view_->layer()->SetFillsBoundsOpaquely(false);
-  icon_view_->SetHorizontalAlignment(views::ImageView::CENTER);
-  icon_view_->SetVerticalAlignment(views::ImageView::LEADING);
-  // Do not make this interactive, so that events are sent to ShelfView.
-  icon_view_->set_can_process_events_within_subtree(false);
-
-  AddChildView(indicator_);
-  AddChildView(icon_view_);
-}
-
-ShelfButton::~ShelfButton() {
-  if (destroyed_flag_)
-    *destroyed_flag_ = true;
-}
-
-void ShelfButton::SetShadowedImage(const gfx::ImageSkia& image) {
-  icon_view_->SetImage(gfx::ImageSkiaOperations::CreateImageWithDropShadow(
-      image, icon_shadows_));
-}
-
-void ShelfButton::SetImage(const gfx::ImageSkia& image) {
-  if (image.isNull()) {
-    // TODO: need an empty image.
-    icon_view_->SetImage(image);
-    return;
-  }
-
-  // Resize the image maintaining our aspect ratio.
-  float aspect_ratio =
-      static_cast<float>(image.width()) / static_cast<float>(image.height());
-  int height = kIconSize;
-  int width = static_cast<int>(aspect_ratio * height);
-  if (width > kIconSize) {
-    width = kIconSize;
-    height = static_cast<int>(width / aspect_ratio);
-  }
-
-  if (width == image.width() && height == image.height()) {
-    SetShadowedImage(image);
-    return;
-  }
-
-  SetShadowedImage(gfx::ImageSkiaOperations::CreateResizedImage(
-      image, skia::ImageOperations::RESIZE_BEST, gfx::Size(width, height)));
-}
-
-const gfx::ImageSkia& ShelfButton::GetImage() const {
-  return icon_view_->GetImage();
-}
-
-void ShelfButton::AddState(State state) {
-  if (!(state_ & state)) {
-    state_ |= state;
-    Layout();
-    if (state & STATE_ATTENTION)
-      indicator_->ShowAttention(true);
-  }
-}
-
-void ShelfButton::ClearState(State state) {
-  if (state_ & state) {
-    state_ &= ~state;
-    Layout();
-    if (state & STATE_ATTENTION)
-      indicator_->ShowAttention(false);
-  }
-}
-
-gfx::Rect ShelfButton::GetIconBounds() const {
-  return icon_view_->bounds();
-}
-
-void ShelfButton::OnDragStarted(const ui::LocatedEvent* event) {
-  AnimateInkDrop(views::InkDropState::HIDDEN, event);
-}
-
-void ShelfButton::ShowContextMenu(const gfx::Point& p,
-                                  ui::MenuSourceType source_type) {
-  if (!context_menu_controller())
-    return;
-
-  bool destroyed = false;
-  destroyed_flag_ = &destroyed;
-
-  CustomButton::ShowContextMenu(p, source_type);
-
-  if (!destroyed) {
-    destroyed_flag_ = nullptr;
-    // The menu will not propagate mouse events while its shown. To address,
-    // the hover state gets cleared once the menu was shown (and this was not
-    // destroyed).
-    ClearState(STATE_HOVERED);
-  }
-}
-
-const char* ShelfButton::GetClassName() const {
-  return kViewClassName;
-}
-
-bool ShelfButton::OnMousePressed(const ui::MouseEvent& event) {
-  CustomButton::OnMousePressed(event);
-  shelf_view_->PointerPressedOnButton(this, ShelfView::MOUSE, event);
-  return true;
-}
-
-void ShelfButton::OnMouseReleased(const ui::MouseEvent& event) {
-  CustomButton::OnMouseReleased(event);
-  shelf_view_->PointerReleasedOnButton(this, ShelfView::MOUSE, false);
-}
-
-void ShelfButton::OnMouseCaptureLost() {
-  ClearState(STATE_HOVERED);
-  shelf_view_->PointerReleasedOnButton(this, ShelfView::MOUSE, true);
-  CustomButton::OnMouseCaptureLost();
-}
-
-bool ShelfButton::OnMouseDragged(const ui::MouseEvent& event) {
-  CustomButton::OnMouseDragged(event);
-  shelf_view_->PointerDraggedOnButton(this, ShelfView::MOUSE, event);
-  return true;
-}
-
-void ShelfButton::GetAccessibleNodeData(ui::AXNodeData* node_data) {
-  node_data->role = ui::AX_ROLE_BUTTON;
-  node_data->SetName(shelf_view_->GetTitleForView(this));
-}
-
-void ShelfButton::Layout() {
-  const gfx::Rect button_bounds(GetContentsBounds());
-  WmShelf* wm_shelf = shelf_view_->wm_shelf();
-  const bool is_horizontal_shelf = wm_shelf->IsHorizontalAlignment();
-  const int icon_pad =
-      is_horizontal_shelf ? kIconPaddingHorizontal : kIconPaddingVertical;
-  int x_offset = is_horizontal_shelf ? 0 : icon_pad;
-  int y_offset = is_horizontal_shelf ? icon_pad : 0;
-
-  int icon_width = std::min(kIconSize, button_bounds.width() - x_offset);
-  int icon_height = std::min(kIconSize, button_bounds.height() - y_offset);
-
-  // If on the left or top 'invert' the inset so the constant gap is on
-  // the interior (towards the center of display) edge of the shelf.
-  if (SHELF_ALIGNMENT_LEFT == wm_shelf->GetAlignment())
-    x_offset = button_bounds.width() - (kIconSize + icon_pad);
-
-  // Center icon with respect to the secondary axis.
-  if (is_horizontal_shelf)
-    x_offset = std::max(0, button_bounds.width() - icon_width) / 2;
-  else
-    y_offset = std::max(0, button_bounds.height() - icon_height) / 2;
-
-  // Expand bounds to include shadows.
-  gfx::Insets insets_shadows = gfx::ShadowValue::GetMargin(icon_shadows_);
-  // Adjust offsets to center icon, not icon + shadow.
-  x_offset += (insets_shadows.left() - insets_shadows.right()) / 2;
-  y_offset += (insets_shadows.top() - insets_shadows.bottom()) / 2;
-  gfx::Rect icon_view_bounds =
-      gfx::Rect(button_bounds.x() + x_offset, button_bounds.y() + y_offset,
-                icon_width, icon_height);
-  // The indicator should be aligned with the icon, not the icon + shadow.
-  gfx::Point indicator_midpoint = icon_view_bounds.CenterPoint();
-  icon_view_bounds.Inset(insets_shadows);
-  icon_view_bounds.AdjustToFit(gfx::Rect(size()));
-  icon_view_->SetBoundsRect(icon_view_bounds);
-
-  // Icon size has been incorrect when running
-  // PanelLayoutManagerTest.PanelAlignmentSecondDisplay on valgrind bot, see
-  // http://crbug.com/234854.
-  DCHECK_LE(icon_width, kIconSize);
-  DCHECK_LE(icon_height, kIconSize);
-
-  switch (wm_shelf->GetAlignment()) {
-    case SHELF_ALIGNMENT_BOTTOM:
-    case SHELF_ALIGNMENT_BOTTOM_LOCKED:
-      indicator_midpoint.set_y(button_bounds.bottom() - kIndicatorRadiusDip -
-                               kIndicatorOffsetFromBottom);
-      break;
-    case SHELF_ALIGNMENT_LEFT:
-      indicator_midpoint.set_x(button_bounds.x() + kIndicatorRadiusDip +
-                               kIndicatorOffsetFromBottom);
-      break;
-    case SHELF_ALIGNMENT_RIGHT:
-      indicator_midpoint.set_x(button_bounds.right() - kIndicatorRadiusDip -
-                               kIndicatorOffsetFromBottom);
-      break;
-  }
-
-  gfx::Rect indicator_bounds(indicator_midpoint, gfx::Size());
-  indicator_bounds.Inset(gfx::Insets(-kIndicatorRadiusDip));
-  indicator_->SetBoundsRect(indicator_bounds);
-
-  UpdateState();
-}
-
-void ShelfButton::ChildPreferredSizeChanged(views::View* child) {
-  Layout();
-}
-
-void ShelfButton::OnFocus() {
-  AddState(STATE_FOCUSED);
-  CustomButton::OnFocus();
-}
-
-void ShelfButton::OnBlur() {
-  ClearState(STATE_FOCUSED);
-  CustomButton::OnBlur();
-}
-
-void ShelfButton::OnPaint(gfx::Canvas* canvas) {
-  CustomButton::OnPaint(canvas);
-  if (HasFocus()) {
-    canvas->DrawSolidFocusRect(gfx::RectF(GetLocalBounds()), kFocusBorderColor,
-                               kFocusBorderThickness);
-  }
-}
-
-void ShelfButton::OnGestureEvent(ui::GestureEvent* event) {
-  switch (event->type()) {
-    case ui::ET_GESTURE_TAP_DOWN:
-      AddState(STATE_HOVERED);
-      return CustomButton::OnGestureEvent(event);
-    case ui::ET_GESTURE_END:
-      ClearState(STATE_HOVERED);
-      return CustomButton::OnGestureEvent(event);
-    case ui::ET_GESTURE_SCROLL_BEGIN:
-      shelf_view_->PointerPressedOnButton(this, ShelfView::TOUCH, *event);
-      event->SetHandled();
-      return;
-    case ui::ET_GESTURE_SCROLL_UPDATE:
-      shelf_view_->PointerDraggedOnButton(this, ShelfView::TOUCH, *event);
-      event->SetHandled();
-      return;
-    case ui::ET_GESTURE_SCROLL_END:
-    case ui::ET_SCROLL_FLING_START:
-      shelf_view_->PointerReleasedOnButton(this, ShelfView::TOUCH, false);
-      event->SetHandled();
-      return;
-    default:
-      return CustomButton::OnGestureEvent(event);
-  }
-}
-
-std::unique_ptr<views::InkDropRipple> ShelfButton::CreateInkDropRipple() const {
-  return base::MakeUnique<views::SquareInkDropRipple>(
-      gfx::Size(kInkDropLargeSize, kInkDropLargeSize),
-      kInkDropLargeCornerRadius,
-      gfx::Size(kInkDropSmallSize, kInkDropSmallSize),
-      kInkDropSmallCornerRadius, GetLocalBounds().CenterPoint(),
-      GetInkDropBaseColor(), ink_drop_visible_opacity());
-}
-
-bool ShelfButton::ShouldEnterPushedState(const ui::Event& event) {
-  if (!shelf_view_->ShouldEventActivateButton(this, event))
-    return false;
-
-  return CustomButton::ShouldEnterPushedState(event);
-}
-
-std::unique_ptr<views::InkDrop> ShelfButton::CreateInkDrop() {
-  std::unique_ptr<views::InkDropImpl> ink_drop =
-      CustomButton::CreateDefaultInkDropImpl();
-  ink_drop->SetShowHighlightOnHover(false);
-  return std::move(ink_drop);
-}
-
-void ShelfButton::NotifyClick(const ui::Event& event) {
-  CustomButton::NotifyClick(event);
-  if (listener_)
-    listener_->ButtonPressed(this, event, GetInkDrop());
-}
-
-void ShelfButton::UpdateState() {
-  indicator_->SetVisible(!(state_ & STATE_HIDDEN) &&
-                         (state_ & STATE_ACTIVE || state_ & STATE_ATTENTION ||
-                          state_ & STATE_RUNNING));
-
-  const bool is_horizontal_shelf =
-      shelf_view_->wm_shelf()->IsHorizontalAlignment();
-  icon_view_->SetHorizontalAlignment(is_horizontal_shelf
-                                         ? views::ImageView::CENTER
-                                         : views::ImageView::LEADING);
-  icon_view_->SetVerticalAlignment(is_horizontal_shelf
-                                       ? views::ImageView::LEADING
-                                       : views::ImageView::CENTER);
-  SchedulePaint();
-}
-
-}  // namespace ash