src/ash/system/chromeos/power/power_status_view.cc

   1 // Copyright (c) 2012 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/chromeos/power/power_status_view.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/shell_delegate.h"
   9 #include "ash/system/chromeos/power/power_status.h"
  10 #include "ash/system/chromeos/power/tray_power.h"
  11 #include "ash/system/tray/fixed_sized_image_view.h"
  12 #include "ash/system/tray/tray_constants.h"
  13 #include "base/strings/string_number_conversions.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "grit/ash_strings.h"
  16 #include "ui/base/l10n/l10n_util.h"
  17 #include "ui/base/l10n/time_format.h"
  18 #include "ui/base/resource/resource_bundle.h"
  19 #include "ui/views/controls/image_view.h"
  20 #include "ui/views/controls/label.h"
  21 #include "ui/views/layout/box_layout.h"
  22 #include "ui/views/layout/grid_layout.h"
  23
  24 namespace ash {
  25
  26 // Padding between battery status text and battery icon on default view.
  27 const int kPaddingBetweenBatteryStatusAndIcon = 3;
  28
  29 PowerStatusView::PowerStatusView(ViewType view_type,
  30                                  bool default_view_right_align)
  31     : default_view_right_align_(default_view_right_align),
  32       status_label_(NULL),
  33       time_label_(NULL),
  34       time_status_label_(NULL),
  35       percentage_label_(NULL),
  36       icon_(NULL),
  37       view_type_(view_type) {
  38   PowerStatus::Get()->AddObserver(this);
  39   if (view_type == VIEW_DEFAULT) {
  40     time_status_label_ = new views::Label;
  41     percentage_label_ = new views::Label;
  42     percentage_label_->SetEnabledColor(kHeaderTextColorNormal);
  43     LayoutDefaultView();
  44   } else {
  45     status_label_ = new views::Label;
  46     time_label_ = new views::Label;
  47     LayoutNotificationView();
  48   }
  49   OnPowerStatusChanged();
  50 }
  51
  52 PowerStatusView::~PowerStatusView() {
  53   PowerStatus::Get()->RemoveObserver(this);
  54 }
  55
  56 void PowerStatusView::OnPowerStatusChanged() {
  57   view_type_ == VIEW_DEFAULT ?
  58       UpdateTextForDefaultView() : UpdateTextForNotificationView();
  59
  60   if (icon_) {
  61     icon_->SetImage(
  62         PowerStatus::Get()->GetBatteryImage(PowerStatus::ICON_DARK));
  63     icon_->SetVisible(true);
  64   }
  65 }
  66
  67 void PowerStatusView::LayoutDefaultView() {
  68   if (default_view_right_align_) {
  69     views::BoxLayout* layout =
  70         new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0,
  71                              kPaddingBetweenBatteryStatusAndIcon);
  72     SetLayoutManager(layout);
  73
  74     AddChildView(percentage_label_);
  75     AddChildView(time_status_label_);
  76
  77     icon_ = new views::ImageView;
  78     AddChildView(icon_);
  79   } else {
  80     // PowerStatusView is left aligned on the system tray pop up item.
  81     views::BoxLayout* layout =
  82         new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0,
  83                              kTrayPopupPaddingBetweenItems);
  84     SetLayoutManager(layout);
  85
  86     icon_ = new ash::FixedSizedImageView(0, ash::kTrayPopupItemHeight);
  87     AddChildView(icon_);
  88
  89     AddChildView(percentage_label_);
  90     AddChildView(time_status_label_);
  91   }
  92 }
  93
  94 void PowerStatusView::LayoutNotificationView() {
  95   SetLayoutManager(
  96       new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 1));
  97   status_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  98   AddChildView(status_label_);
  99
 100   time_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 101   AddChildView(time_label_);
 102 }
 103
 104 void PowerStatusView::UpdateTextForDefaultView() {
 105   const PowerStatus& status = *PowerStatus::Get();
 106   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 107   base::string16 battery_percentage;
 108   base::string16 battery_time_status;
 109
 110   if (status.IsBatteryFull()) {
 111     battery_time_status =
 112         rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_BATTERY_FULL);
 113   } else {
 114     battery_percentage = l10n_util::GetStringFUTF16(
 115         IDS_ASH_STATUS_TRAY_BATTERY_PERCENT_ONLY,
 116         base::IntToString16(status.GetRoundedBatteryPercent()));
 117     if (status.IsUsbChargerConnected()) {
 118       battery_time_status = rb.GetLocalizedString(
 119           IDS_ASH_STATUS_TRAY_BATTERY_CHARGING_UNRELIABLE);
 120     } else if (status.IsBatteryTimeBeingCalculated()) {
 121       battery_time_status =
 122           rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_BATTERY_CALCULATING);
 123     } else {
 124       base::TimeDelta time = status.IsBatteryCharging() ?
 125           status.GetBatteryTimeToFull() : status.GetBatteryTimeToEmpty();
 126       if (PowerStatus::ShouldDisplayBatteryTime(time) &&
 127           !status.IsBatteryDischargingOnLinePower()) {
 128         int hour = 0, min = 0;
 129         PowerStatus::SplitTimeIntoHoursAndMinutes(time, &hour, &min);
 130         base::string16 minute = min < 10 ?
 131             base::ASCIIToUTF16("0") + base::IntToString16(min) :
 132             base::IntToString16(min);
 133         battery_time_status =
 134             l10n_util::GetStringFUTF16(
 135                 status.IsBatteryCharging() ?
 136                 IDS_ASH_STATUS_TRAY_BATTERY_TIME_UNTIL_FULL_SHORT :
 137                 IDS_ASH_STATUS_TRAY_BATTERY_TIME_LEFT_SHORT,
 138                 base::IntToString16(hour),
 139                 minute);
 140       }
 141     }
 142     battery_percentage = battery_time_status.empty() ?
 143         battery_percentage : battery_percentage + base::ASCIIToUTF16(" - ");
 144   }
 145   percentage_label_->SetVisible(!battery_percentage.empty());
 146   percentage_label_->SetText(battery_percentage);
 147   time_status_label_->SetVisible(!battery_time_status.empty());
 148   time_status_label_->SetText(battery_time_status);
 149 }
 150
 151 void PowerStatusView::UpdateTextForNotificationView() {
 152   const PowerStatus& status = *PowerStatus::Get();
 153   if (status.IsBatteryFull()) {
 154     status_label_->SetText(
 155         ui::ResourceBundle::GetSharedInstance().GetLocalizedString(
 156             IDS_ASH_STATUS_TRAY_BATTERY_FULL));
 157   } else {
 158     status_label_->SetText(
 159         l10n_util::GetStringFUTF16(
 160             IDS_ASH_STATUS_TRAY_BATTERY_PERCENT,
 161             base::IntToString16(status.GetRoundedBatteryPercent())));
 162   }
 163
 164   const base::TimeDelta time = status.IsBatteryCharging() ?
 165       status.GetBatteryTimeToFull() : status.GetBatteryTimeToEmpty();
 166
 167   if (status.IsUsbChargerConnected()) {
 168     time_label_->SetText(
 169         ui::ResourceBundle::GetSharedInstance().GetLocalizedString(
 170             IDS_ASH_STATUS_TRAY_BATTERY_CHARGING_UNRELIABLE));
 171   } else if (status.IsBatteryTimeBeingCalculated()) {
 172     time_label_->SetText(
 173         ui::ResourceBundle::GetSharedInstance().GetLocalizedString(
 174             IDS_ASH_STATUS_TRAY_BATTERY_CALCULATING));
 175   } else if (PowerStatus::ShouldDisplayBatteryTime(time) &&
 176              !status.IsBatteryDischargingOnLinePower()) {
 177     int hour = 0, min = 0;
 178     PowerStatus::SplitTimeIntoHoursAndMinutes(time, &hour, &min);
 179     if (status.IsBatteryCharging()) {
 180       time_label_->SetText(
 181           l10n_util::GetStringFUTF16(
 182               IDS_ASH_STATUS_TRAY_BATTERY_TIME_UNTIL_FULL,
 183               base::IntToString16(hour),
 184               base::IntToString16(min)));
 185     } else {
 186       // This is a low battery warning prompting the user in minutes.
 187       time_label_->SetText(ui::TimeFormat::Simple(
 188           ui::TimeFormat::FORMAT_REMAINING, ui::TimeFormat::LENGTH_LONG,
 189           base::TimeDelta::FromMinutes(hour * 60 + min)));
 190     }
 191   } else {
 192     time_label_->SetText(base::string16());
 193   }
 194 }
 195
 196 void PowerStatusView::ChildPreferredSizeChanged(views::View* child) {
 197   PreferredSizeChanged();
 198 }
 199
 200 gfx::Size PowerStatusView::GetPreferredSize() {
 201   gfx::Size size = views::View::GetPreferredSize();
 202   return gfx::Size(size.width(), kTrayPopupItemHeight);
 203 }
 204
 205 int PowerStatusView::GetHeightForWidth(int width) {
 206   return kTrayPopupItemHeight;
 207 }
 208
 209 void PowerStatusView::Layout() {
 210   views::View::Layout();
 211
 212   // Move the time_status_label_ closer to percentage_label_.
 213   if (percentage_label_ && time_status_label_ &&
 214       percentage_label_->visible() && time_status_label_->visible()) {
 215     time_status_label_->SetX(percentage_label_->bounds().right() + 1);
 216   }
 217 }
 218
 219 }  // namespace ash