Move app list from ash to ui.

ash/app_list/app_list_item_view.cc

Index: ash/app_list/app_list_item_view.cc
===================================================================
--- ash/app_list/app_list_item_view.cc	(revision 135932)
+++ ash/app_list/app_list_item_view.cc	(working copy)
@@ -1,403 +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/app_list/app_list_item_view.h"
-
-#include "ash/app_list/app_list.h"
-#include "ash/app_list/app_list_item_model.h"
-#include "ash/app_list/app_list_model_view.h"
-#include "ash/app_list/drop_shadow_label.h"
-#include "ash/app_list/icon_cache.h"
-#include "base/bind.h"
-#include "base/message_loop.h"
-#include "base/synchronization/cancellation_flag.h"
-#include "base/threading/worker_pool.h"
-#include "base/utf_string_conversions.h"
-#include "ui/base/accessibility/accessible_view_state.h"
-#include "ui/base/animation/throb_animation.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/font.h"
-#include "ui/gfx/shadow_value.h"
-#include "ui/gfx/skbitmap_operations.h"
-#include "ui/views/controls/image_view.h"
-#include "ui/views/controls/menu/menu_item_view.h"
-#include "ui/views/controls/menu/menu_model_adapter.h"
-#include "ui/views/controls/menu/menu_runner.h"
-
-namespace ash {
-
-namespace {
-
-const int kTopBottomPadding = 10;
-const int kIconTitleSpacing = 10;
-
-const SkColor kTitleColor = SK_ColorWHITE;
-const SkColor kTitleColorV2 = SkColorSetARGB(0xFF, 0x88, 0x88, 0x88);
-
-// 0.33 black
-const SkColor kHoverAndPushedColor = SkColorSetARGB(0x55, 0x00, 0x00, 0x00);
-
-// 0.16 black
-const SkColor kSelectedColor = SkColorSetARGB(0x2A, 0x00, 0x00, 0x00);
-
-const SkColor kHighlightedColor = kHoverAndPushedColor;
-
-// FontSize/IconSize ratio = 24 / 128, which means we should get 24 font size
-// when icon size is 128.
-const float kFontSizeToIconSizeRatio = 0.1875f;
-
-// Font smaller than kBoldFontSize needs to be bold.
-const int kBoldFontSize = 14;
-
-const int kMinFontSize = 12;
-
-const int kMinTitleChars = 15;
-
-const int kLeftRightPaddingChars = 1;
-
-const gfx::Font& GetTitleFontForIconSize(const gfx::Size& size) {
-  static int icon_height;
-  static gfx::Font* font = NULL;
-
-  if (font && icon_height == size.height())
-    return *font;
-
-  delete font;
-
-  icon_height = size.height();
-  int font_size = std::max(
-      static_cast<int>(icon_height * kFontSizeToIconSizeRatio),
-      kMinFontSize);
-
-  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
-  gfx::Font title_font(rb.GetFont(ui::ResourceBundle::BaseFont).GetFontName(),
-                       font_size);
-  if (font_size <= kBoldFontSize)
-    title_font = title_font.DeriveFont(0, gfx::Font::BOLD);
-  font = new gfx::Font(title_font);
-  return *font;
-}
-
-// An image view that is not interactive.
-class StaticImageView : public views::ImageView {
- public:
-  StaticImageView() : ImageView() {
-  }
-
- private:
-  // views::View overrides:
-  virtual bool HitTest(const gfx::Point& l) const OVERRIDE {
-    return false;
-  }
-
-  DISALLOW_COPY_AND_ASSIGN(StaticImageView);
-};
-
-// A minimum title width set by test to override the default logic that derives
-// the min width from font.
-int g_min_title_width = 0;
-
-}  // namespace
-
-// static
-const char AppListItemView::kViewClassName[] = "ash/app_list/AppListItemView";
-
-// AppListItemView::IconOperation wraps background icon processing.
-class AppListItemView::IconOperation
-    : public base::RefCountedThreadSafe<AppListItemView::IconOperation> {
- public:
-  IconOperation(const SkBitmap& bitmap, const gfx::Size& size)
-      : bitmap_(bitmap),
-        size_(size) {
-  }
-
-  static void Run(scoped_refptr<IconOperation> op) {
-    op->ResizeAndGenerateShadow();
-  }
-
-  // Padding space around icon to contain its shadow. Note it should be at least
-  // the max size of shadow radius + shadow offset in shadow generation code.
-  static const int kShadowPadding = 15;
-
-  void ResizeAndGenerateShadow() {
-    // If you change shadow radius and shadow offset, please also update
-    // kShadowPaddingAbove.
-    const SkColor kShadowColor[] = {
-      SkColorSetARGB(0xCC, 0, 0, 0),
-      SkColorSetARGB(0x33, 0, 0, 0),
-      SkColorSetARGB(0x4C, 0, 0, 0),
-    };
-    const gfx::Point kShadowOffset[] = {
-      gfx::Point(0, 0),
-      gfx::Point(0, 4),
-      gfx::Point(0, 5),
-    };
-    const SkScalar kShadowRadius[] = {
-      SkIntToScalar(2),
-      SkIntToScalar(4),
-      SkIntToScalar(10),
-    };
-
-    if (cancel_flag_.IsSet())
-      return;
-
-    if (size_ != gfx::Size(bitmap_.width(), bitmap_.height()))
-      bitmap_ = SkBitmapOperations::CreateResizedBitmap(bitmap_, size_);
-
-    if (cancel_flag_.IsSet())
-      return;
-
-    bitmap_ = SkBitmapOperations::CreateDropShadow(
-        bitmap_,
-        arraysize(kShadowColor),
-        kShadowColor,
-        kShadowOffset,
-        kShadowRadius);
-  }
-
-  void Cancel() {
-    cancel_flag_.Set();
-  }
-
-  const SkBitmap& bitmap() const {
-    return bitmap_;
-  }
-
- private:
-  friend class base::RefCountedThreadSafe<AppListItemView::IconOperation>;
-
-  base::CancellationFlag cancel_flag_;
-
-  SkBitmap bitmap_;
-  const gfx::Size size_;
-
-  DISALLOW_COPY_AND_ASSIGN(IconOperation);
-};
-
-AppListItemView::AppListItemView(AppListModelView* list_model_view,
-                                 AppListItemModel* model,
-                                 views::ButtonListener* listener)
-    : CustomButton(listener),
-      model_(model),
-      list_model_view_(list_model_view),
-      icon_(new StaticImageView),
-      title_(new DropShadowLabel),
-      selected_(false),
-      ALLOW_THIS_IN_INITIALIZER_LIST(apply_shadow_factory_(this)) {
-  title_->SetBackgroundColor(0);
-
-  if (internal::AppList::UseAppListV2()) {
-    title_->SetEnabledColor(kTitleColorV2);
-  } else {
-    title_->SetEnabledColor(kTitleColor);
-    const gfx::ShadowValue kTitleShadows[] = {
-      gfx::ShadowValue(gfx::Point(0, 0), 1, SkColorSetARGB(0x66, 0, 0, 0)),
-      gfx::ShadowValue(gfx::Point(0, 0), 10, SkColorSetARGB(0x66, 0, 0, 0)),
-      gfx::ShadowValue(gfx::Point(0, 2), 2, SkColorSetARGB(0x66, 0, 0, 0)),
-      gfx::ShadowValue(gfx::Point(0, 2), 4, SkColorSetARGB(0x66, 0, 0, 0)),
-    };
-    title_->SetTextShadows(arraysize(kTitleShadows), kTitleShadows);
-  }
-
-  AddChildView(icon_);
-  AddChildView(title_);
-
-  ItemIconChanged();
-  ItemTitleChanged();
-  model_->AddObserver(this);
-
-  set_context_menu_controller(this);
-  set_request_focus_on_press(false);
-  set_focusable(true);
-}
-
-AppListItemView::~AppListItemView() {
-  model_->RemoveObserver(this);
-  CancelPendingIconOperation();
-}
-
-// static
-gfx::Size AppListItemView::GetPreferredSizeForIconSize(
-    const gfx::Size& icon_size) {
-  int min_title_width = g_min_title_width;
-  // Fixed 20px is used for left/right padding before switching to padding
-  // based on number of chars. It is also a number used for test case
-  // AppList.ModelViewCalculateLayout.
-  int left_right_padding = 20;
-  if (min_title_width == 0) {
-    const gfx::Font& title_font = GetTitleFontForIconSize(icon_size);
-    // Use big char such as 'G' to calculate min title width.
-    min_title_width = kMinTitleChars *
-        title_font.GetStringWidth(ASCIIToUTF16("G"));
-    left_right_padding = kLeftRightPaddingChars *
-        title_font.GetAverageCharacterWidth();
-  }
-
-  int dimension = std::max(icon_size.width() * 2, min_title_width);
-  gfx::Size size(dimension, dimension);
-  size.Enlarge(left_right_padding, kTopBottomPadding);
-  return size;
-}
-
-// static
-void AppListItemView::SetMinTitleWidth(int width) {
-  g_min_title_width = width;
-}
-
-void AppListItemView::SetIconSize(const gfx::Size& size) {
-  if (icon_size_ == size)
-    return;
-
-  icon_size_ = size;
-  title_->SetFont(GetTitleFontForIconSize(size));
-  UpdateIcon();
-}
-
-void AppListItemView::SetSelected(bool selected) {
-  if (selected == selected_)
-    return;
-
-  RequestFocus();
-  selected_ = selected;
-  SchedulePaint();
-}
-
-void AppListItemView::UpdateIcon() {
-  // Skip if |icon_size_| has not been determined.
-  if (icon_size_.IsEmpty())
-    return;
-
-  SkBitmap icon = model_->icon();
-  // Clear icon and bail out if model icon is empty.
-  if (icon.empty()) {
-    icon_->SetImage(NULL);
-    return;
-  }
-
-  CancelPendingIconOperation();
-
-  SkBitmap shadow;
-  if (IconCache::GetInstance()->Get(icon, icon_size_, &shadow)) {
-    icon_->SetImage(shadow);
-  } else {
-    // Schedule resize and shadow generation.
-    icon_op_ = new IconOperation(icon, icon_size_);
-    base::WorkerPool::PostTaskAndReply(
-        FROM_HERE,
-        base::Bind(&IconOperation::Run, icon_op_),
-        base::Bind(&AppListItemView::ApplyShadow,
-                   apply_shadow_factory_.GetWeakPtr(),
-                   icon_op_),
-        true /* task_is_slow */);
-  }
-}
-
-void AppListItemView::CancelPendingIconOperation() {
-  // Set canceled flag of previous request to skip unneeded processing.
-  if (icon_op_.get())
-    icon_op_->Cancel();
-
-  // Cancel reply callback for previous request.
-  apply_shadow_factory_.InvalidateWeakPtrs();
-}
-
-void AppListItemView::ApplyShadow(scoped_refptr<IconOperation> op) {
-  icon_->SetImage(op->bitmap());
-  IconCache::GetInstance()->Put(model_->icon(), icon_size_, op->bitmap());
-
-  DCHECK(op.get() == icon_op_.get());
-  icon_op_ = NULL;
-}
-
-void AppListItemView::ItemIconChanged() {
-  UpdateIcon();
-}
-
-void AppListItemView::ItemTitleChanged() {
-  title_->SetText(UTF8ToUTF16(model_->title()));
-}
-
-void AppListItemView::ItemHighlightedChanged() {
-  SchedulePaint();
-}
-
-std::string AppListItemView::GetClassName() const {
-  return kViewClassName;
-}
-
-gfx::Size AppListItemView::GetPreferredSize() {
-  return GetPreferredSizeForIconSize(icon_size_);
-}
-
-void AppListItemView::Layout() {
-  gfx::Rect rect(GetContentsBounds());
-
-  int left_right_padding = kLeftRightPaddingChars *
-      title_->font().GetAverageCharacterWidth();
-  rect.Inset(left_right_padding, kTopBottomPadding);
-
-  gfx::Size title_size = title_->GetPreferredSize();
-  int height = icon_size_.height() + kIconTitleSpacing +
-      title_size.height();
-  int y = rect.y() + (rect.height() - height) / 2;
-
-  gfx::Rect icon_bounds(rect.x(), y, rect.width(), icon_size_.height());
-  icon_bounds.Inset(0, -IconOperation::kShadowPadding);
-  icon_->SetBoundsRect(icon_bounds);
-
-  title_->SetBounds(rect.x(),
-                    y + icon_size_.height() + kIconTitleSpacing,
-                    rect.width(),
-                    title_size.height());
-}
-
-void AppListItemView::OnPaint(gfx::Canvas* canvas) {
-  gfx::Rect rect(GetContentsBounds());
-
-  if (model_->highlighted()) {
-    canvas->FillRect(rect, kHighlightedColor);
-  } else if (hover_animation_->is_animating()) {
-    int alpha = SkColorGetA(kHoverAndPushedColor) *
-        hover_animation_->GetCurrentValue();
-    canvas->FillRect(rect, SkColorSetA(kHoverAndPushedColor, alpha));
-  } else if (state() == BS_HOT || state() == BS_PUSHED) {
-    canvas->FillRect(rect, kHoverAndPushedColor);
-  } else if (selected_) {
-    canvas->FillRect(rect, kSelectedColor);
-  }
-}
-
-void AppListItemView::GetAccessibleState(ui::AccessibleViewState* state) {
-  state->role = ui::AccessibilityTypes::ROLE_PUSHBUTTON;
-  state->name = UTF8ToUTF16(model_->title());
-}
-
-void AppListItemView::ShowContextMenuForView(views::View* source,
-                                             const gfx::Point& point) {
-  ui::MenuModel* menu_model = model_->GetContextMenuModel();
-  if (!menu_model)
-    return;
-
-  views::MenuModelAdapter menu_adapter(menu_model);
-  context_menu_runner_.reset(
-      new views::MenuRunner(new views::MenuItemView(&menu_adapter)));
-  menu_adapter.BuildMenu(context_menu_runner_->GetMenu());
-  if (context_menu_runner_->RunMenuAt(
-          GetWidget(), NULL, gfx::Rect(point, gfx::Size()),
-          views::MenuItemView::TOPLEFT, views::MenuRunner::HAS_MNEMONICS) ==
-      views::MenuRunner::MENU_DELETED)
-    return;
-}
-
-void AppListItemView::StateChanged() {
-  if (state() == BS_HOT || state() == BS_PUSHED) {
-    list_model_view_->SetSelectedItem(this);
-  } else {
-    list_model_view_->ClearSelectedItem(this);
-    model_->SetHighlighted(false);
-  }
-}
-
-}  // namespace ash