ash/shelf/shelf.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ash/shelf/shelf.h"
   6
   7 #include <algorithm>
   8 #include <cmath>
   9
  10 #include "ash/focus_cycler.h"
  11 #include "ash/root_window_controller.h"
  12 #include "ash/screen_util.h"
  13 #include "ash/shelf/shelf_delegate.h"
  14 #include "ash/shelf/shelf_item_delegate.h"
  15 #include "ash/shelf/shelf_item_delegate_manager.h"
  16 #include "ash/shelf/shelf_layout_manager.h"
  17 #include "ash/shelf/shelf_model.h"
  18 #include "ash/shelf/shelf_navigator.h"
  19 #include "ash/shelf/shelf_util.h"
  20 #include "ash/shelf/shelf_view.h"
  21 #include "ash/shelf/shelf_widget.h"
  22 #include "ash/shell.h"
  23 #include "ash/shell_delegate.h"
  24 #include "ash/shell_window_ids.h"
  25 #include "ash/wm/window_properties.h"
  26 #include "grit/ash_resources.h"
  27 #include "ui/aura/window.h"
  28 #include "ui/aura/window_event_dispatcher.h"
  29 #include "ui/aura/window_observer.h"
  30 #include "ui/compositor/layer.h"
  31 #include "ui/gfx/canvas.h"
  32 #include "ui/gfx/image/image.h"
  33 #include "ui/gfx/image/image_skia_operations.h"
  34 #include "ui/gfx/skbitmap_operations.h"
  35 #include "ui/views/accessible_pane_view.h"
  36 #include "ui/views/widget/widget.h"
  37 #include "ui/views/widget/widget_delegate.h"
  38 #include "ui/wm/public/activation_client.h"
  39
  40 namespace ash {
  41
  42 const char Shelf::kNativeViewName[] = "ShelfView";
  43
  44 Shelf::Shelf(ShelfModel* shelf_model,
  45              ShelfDelegate* shelf_delegate,
  46              ShelfWidget* shelf_widget)
  47     : shelf_view_(NULL),
  48       alignment_(shelf_widget->GetAlignment()),
  49       delegate_(shelf_delegate),
  50       shelf_widget_(shelf_widget) {
  51   shelf_view_ = new ShelfView(
  52       shelf_model, delegate_, shelf_widget_->shelf_layout_manager());
  53   shelf_view_->Init();
  54   shelf_widget_->GetContentsView()->AddChildView(shelf_view_);
  55   shelf_widget_->GetNativeView()->SetName(kNativeViewName);
  56   delegate_->OnShelfCreated(this);
  57 }
  58
  59 Shelf::~Shelf() {
  60   delegate_->OnShelfDestroyed(this);
  61 }
  62
  63 // static
  64 Shelf* Shelf::ForPrimaryDisplay() {
  65   ShelfWidget* shelf_widget =
  66       RootWindowController::ForShelf(Shell::GetPrimaryRootWindow())->shelf();
  67   return shelf_widget ? shelf_widget->shelf() : NULL;
  68 }
  69
  70 // static
  71 Shelf* Shelf::ForWindow(aura::Window* window) {
  72   ShelfWidget* shelf_widget = RootWindowController::ForShelf(window)->shelf();
  73   return shelf_widget ? shelf_widget->shelf() : NULL;
  74 }
  75
  76 void Shelf::SetAlignment(ShelfAlignment alignment) {
  77   alignment_ = alignment;
  78   shelf_view_->OnShelfAlignmentChanged();
  79   // ShelfLayoutManager will resize the shelf.
  80 }
  81
  82 gfx::Rect Shelf::GetScreenBoundsOfItemIconForWindow(
  83     const aura::Window* window) {
  84   ShelfID id = GetShelfIDForWindow(window);
  85   gfx::Rect bounds(shelf_view_->GetIdealBoundsOfItemIcon(id));
  86   gfx::Point screen_origin;
  87   views::View::ConvertPointToScreen(shelf_view_, &screen_origin);
  88   return gfx::Rect(screen_origin.x() + bounds.x(),
  89                    screen_origin.y() + bounds.y(),
  90                    bounds.width(),
  91                    bounds.height());
  92 }
  93
  94 void Shelf::UpdateIconPositionForWindow(aura::Window* window) {
  95   shelf_view_->UpdatePanelIconPosition(
  96       GetShelfIDForWindow(window),
  97       ScreenUtil::ConvertRectFromScreen(
  98           shelf_widget()->GetNativeView(),
  99           window->GetBoundsInScreen()).CenterPoint());
 100 }
 101
 102 void Shelf::ActivateShelfItem(int index) {
 103   // We pass in a keyboard event which will then trigger a switch to the
 104   // next item if the current one is already active.
 105   ui::KeyEvent event(ui::ET_KEY_RELEASED,
 106                      ui::VKEY_UNKNOWN,  // The actual key gets ignored.
 107                      ui::EF_NONE);
 108
 109   const ShelfItem& item = shelf_view_->model()->items()[index];
 110   ShelfItemDelegate* item_delegate =
 111       Shell::GetInstance()->shelf_item_delegate_manager()->GetShelfItemDelegate(
 112           item.id);
 113   item_delegate->ItemSelected(event);
 114 }
 115
 116 void Shelf::CycleWindowLinear(CycleDirection direction) {
 117   int item_index = GetNextActivatedItemIndex(
 118       *(shelf_view_->model()), direction);
 119   if (item_index >= 0)
 120     ActivateShelfItem(item_index);
 121 }
 122
 123 void Shelf::AddIconObserver(ShelfIconObserver* observer) {
 124   shelf_view_->AddIconObserver(observer);
 125 }
 126
 127 void Shelf::RemoveIconObserver(ShelfIconObserver* observer) {
 128   shelf_view_->RemoveIconObserver(observer);
 129 }
 130
 131 bool Shelf::IsShowingMenu() const {
 132   return shelf_view_->IsShowingMenu();
 133 }
 134
 135 bool Shelf::IsShowingOverflowBubble() const {
 136   return shelf_view_->IsShowingOverflowBubble();
 137 }
 138
 139 void Shelf::SetVisible(bool visible) const {
 140   shelf_view_->SetVisible(visible);
 141 }
 142
 143 bool Shelf::IsVisible() const {
 144   return shelf_view_->visible();
 145 }
 146
 147 void Shelf::SchedulePaint() {
 148   shelf_view_->SchedulePaintForAllButtons();
 149 }
 150
 151 views::View* Shelf::GetAppListButtonView() const {
 152   return shelf_view_->GetAppListButtonView();
 153 }
 154
 155 void Shelf::LaunchAppIndexAt(int item_index) {
 156   ShelfModel* shelf_model = shelf_view_->model();
 157   const ShelfItems& items = shelf_model->items();
 158   int item_count = shelf_model->item_count();
 159   int indexes_left = item_index >= 0 ? item_index : item_count;
 160   int found_index = -1;
 161
 162   // Iterating until we have hit the index we are interested in which
 163   // is true once indexes_left becomes negative.
 164   for (int i = 0; i < item_count && indexes_left >= 0; i++) {
 165     if (items[i].type != TYPE_APP_LIST) {
 166       found_index = i;
 167       indexes_left--;
 168     }
 169   }
 170
 171   // There are two ways how found_index can be valid: a.) the nth item was
 172   // found (which is true when indexes_left is -1) or b.) the last item was
 173   // requested (which is true when index was passed in as a negative number).
 174   if (found_index >= 0 && (indexes_left == -1 || item_index < 0)) {
 175     // Then set this one as active (or advance to the next item of its kind).
 176     ActivateShelfItem(found_index);
 177   }
 178 }
 179
 180 void Shelf::SetShelfViewBounds(gfx::Rect bounds) {
 181   shelf_view_->SetBoundsRect(bounds);
 182 }
 183
 184 gfx::Rect Shelf::GetShelfViewBounds() const {
 185   return shelf_view_->bounds();
 186 }
 187
 188 gfx::Rect Shelf::GetVisibleItemsBoundsInScreen() const {
 189   return shelf_view_->GetVisibleItemsBoundsInScreen();
 190 }
 191
 192 app_list::ApplicationDragAndDropHost* Shelf::GetDragAndDropHostForAppList() {
 193   return shelf_view_;
 194 }
 195
 196 }  // namespace ash