src/ash/system/overview/overview_button_tray.cc

   1 // Copyright 2014 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/system/overview/overview_button_tray.h"
   6
   7 #include "ash/shelf/shelf_types.h"
   8 #include "ash/shell.h"
   9 #include "ash/system/tray/tray_utils.h"
  10 #include "ash/wm/overview/window_selector_controller.h"
  11 #include "grit/ash_resources.h"
  12 #include "grit/ash_strings.h"
  13 #include "ui/base/l10n/l10n_util.h"
  14 #include "ui/base/resource/resource_bundle.h"
  15 #include "ui/views/border.h"
  16 #include "ui/views/controls/image_view.h"
  17
  18 namespace {
  19
  20 // Predefined padding for the icon used in this tray. These are to be set to the
  21 // border of the icon, depending on the current shelf_alignment()
  22 const int kHorizontalShelfHorizontalPadding = 8;
  23 const int kHorizontalShelfVerticalPadding = 4;
  24 const int kVerticalShelfHorizontalPadding = 2;
  25 const int kVerticalShelfVerticalPadding = 5;
  26
  27 }  // namespace
  28
  29 namespace ash {
  30
  31 OverviewButtonTray::OverviewButtonTray(
  32     internal::StatusAreaWidget* status_area_widget)
  33     : TrayBackgroundView(status_area_widget),
  34       icon_(NULL) {
  35   SetContentsBackground();
  36
  37   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
  38   icon_ = new views::ImageView();
  39   icon_->SetImage(
  40       bundle.GetImageNamed(IDR_AURA_UBER_TRAY_OVERVIEW_MODE).ToImageSkia());
  41   SetIconBorderForShelfAlignment();
  42   tray_container()->AddChildView(icon_);
  43
  44   SetVisible(Shell::GetInstance()->IsMaximizeModeWindowManagerEnabled());
  45
  46   Shell::GetInstance()->AddShellObserver(this);
  47 }
  48
  49 OverviewButtonTray::~OverviewButtonTray() {
  50   Shell::GetInstance()->RemoveShellObserver(this);
  51 }
  52
  53 bool OverviewButtonTray::PerformAction(const ui::Event& event) {
  54   Shell::GetInstance()->window_selector_controller()->ToggleOverview();
  55   return true;
  56 }
  57
  58 void OverviewButtonTray::OnMaximizeModeStarted() {
  59   SetVisible(true);
  60 }
  61
  62 void OverviewButtonTray::OnMaximizeModeEnded() {
  63   SetVisible(false);
  64 }
  65
  66 bool OverviewButtonTray::ClickedOutsideBubble() {
  67   // This class has no bubbles dismiss, but acknowledge that the message was
  68   // handled.
  69   return true;
  70 }
  71
  72 base::string16 OverviewButtonTray::GetAccessibleNameForTray() {
  73   return l10n_util::GetStringUTF16(IDS_ASH_OVERVIEW_BUTTON_ACCESSIBLE_NAME);
  74 }
  75
  76 void OverviewButtonTray::HideBubbleWithView(
  77     const views::TrayBubbleView* bubble_view) {
  78   // This class has no bubbles to hide.
  79 }
  80
  81 void OverviewButtonTray::SetShelfAlignment(ShelfAlignment alignment) {
  82   if (alignment == shelf_alignment())
  83     return;
  84
  85   TrayBackgroundView::SetShelfAlignment(alignment);
  86   SetIconBorderForShelfAlignment();
  87 }
  88
  89 void OverviewButtonTray::SetIconBorderForShelfAlignment() {
  90   if (shelf_alignment() == SHELF_ALIGNMENT_BOTTOM ||
  91       shelf_alignment() == SHELF_ALIGNMENT_TOP) {
  92     icon_->SetBorder(views::Border::CreateEmptyBorder(
  93         kHorizontalShelfVerticalPadding,
  94         kHorizontalShelfHorizontalPadding,
  95         kHorizontalShelfVerticalPadding,
  96         kHorizontalShelfHorizontalPadding));
  97   } else {
  98     icon_->SetBorder(views::Border::CreateEmptyBorder(
  99         kVerticalShelfVerticalPadding,
 100         kVerticalShelfHorizontalPadding,
 101         kVerticalShelfVerticalPadding,
 102         kVerticalShelfHorizontalPadding));
 103   }
 104 }
 105
 106 }  // namespace ash