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