src/ash/system/tray/hover_highlight_view.cc

   1 // Copyright 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/tray/hover_highlight_view.h"
   6
   7 #include "ash/system/tray/fixed_sized_image_view.h"
   8 #include "ash/system/tray/tray_constants.h"
   9 #include "ash/system/tray/view_click_listener.h"
  10 #include "grit/ui_resources.h"
  11 #include "ui/base/accessibility/accessible_view_state.h"
  12 #include "ui/base/resource/resource_bundle.h"
  13 #include "ui/gfx/canvas.h"
  14 #include "ui/gfx/font_list.h"
  15 #include "ui/views/border.h"
  16 #include "ui/views/controls/image_view.h"
  17 #include "ui/views/controls/label.h"
  18 #include "ui/views/layout/box_layout.h"
  19 #include "ui/views/layout/fill_layout.h"
  20
  21 namespace {
  22
  23 const int kCheckLabelPadding = 4;
  24
  25 }  // namespace
  26
  27 namespace ash {
  28 namespace internal {
  29
  30 HoverHighlightView::HoverHighlightView(ViewClickListener* listener)
  31     : listener_(listener),
  32       text_label_(NULL),
  33       highlight_color_(kHoverBackgroundColor),
  34       default_color_(0),
  35       text_highlight_color_(0),
  36       text_default_color_(0),
  37       hover_(false),
  38       expandable_(false),
  39       checkable_(false),
  40       checked_(false) {
  41   set_notify_enter_exit_on_child(true);
  42 }
  43
  44 HoverHighlightView::~HoverHighlightView() {
  45 }
  46
  47 void HoverHighlightView::AddIconAndLabel(const gfx::ImageSkia& image,
  48                                          const base::string16& text,
  49                                          gfx::Font::FontStyle style) {
  50   SetLayoutManager(new views::BoxLayout(
  51       views::BoxLayout::kHorizontal, 0, 3, kTrayPopupPaddingBetweenItems));
  52   views::ImageView* image_view =
  53       new FixedSizedImageView(kTrayPopupDetailsIconWidth, 0);
  54   image_view->SetImage(image);
  55   AddChildView(image_view);
  56
  57   text_label_ = new views::Label(text);
  58   text_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  59   text_label_->SetFontList(
  60       text_label_->font_list().DeriveFontListWithSizeDeltaAndStyle(0, style));
  61   if (text_default_color_)
  62     text_label_->SetEnabledColor(text_default_color_);
  63   AddChildView(text_label_);
  64
  65   SetAccessibleName(text);
  66 }
  67
  68 views::Label* HoverHighlightView::AddLabel(const base::string16& text,
  69                                            gfx::Font::FontStyle style) {
  70   SetLayoutManager(new views::FillLayout());
  71   text_label_ = new views::Label(text);
  72   int margin = kTrayPopupPaddingHorizontal +
  73       kTrayPopupDetailsLabelExtraLeftMargin;
  74   int left_margin = 0;
  75   int right_margin = 0;
  76   if (base::i18n::IsRTL())
  77     right_margin = margin;
  78   else
  79     left_margin = margin;
  80   text_label_->SetBorder(
  81       views::Border::CreateEmptyBorder(5, left_margin, 5, right_margin));
  82   text_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  83   text_label_->SetFontList(
  84       text_label_->font_list().DeriveFontListWithSizeDeltaAndStyle(0, style));
  85   // Do not set alpha value in disable color. It will have issue with elide
  86   // blending filter in disabled state for rendering label text color.
  87   text_label_->SetDisabledColor(SkColorSetARGB(255, 127, 127, 127));
  88   if (text_default_color_)
  89     text_label_->SetEnabledColor(text_default_color_);
  90   AddChildView(text_label_);
  91
  92   SetAccessibleName(text);
  93   return text_label_;
  94 }
  95
  96 views::Label* HoverHighlightView::AddCheckableLabel(const base::string16& text,
  97                                                     gfx::Font::FontStyle style,
  98                                                     bool checked) {
  99   checkable_ = true;
 100   checked_ = checked;
 101   if (checked) {
 102     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 103     const gfx::ImageSkia* check =
 104         rb.GetImageNamed(IDR_MENU_CHECK).ToImageSkia();
 105     int margin = kTrayPopupPaddingHorizontal +
 106         kTrayPopupDetailsLabelExtraLeftMargin - kCheckLabelPadding;
 107     SetLayoutManager(new views::BoxLayout(
 108         views::BoxLayout::kHorizontal, 0, 3, kCheckLabelPadding));
 109     views::ImageView* image_view = new FixedSizedImageView(margin, 0);
 110     image_view->SetImage(check);
 111     image_view->SetHorizontalAlignment(views::ImageView::TRAILING);
 112     AddChildView(image_view);
 113
 114     text_label_ = new views::Label(text);
 115     text_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 116     text_label_->SetFontList(
 117         text_label_->font_list().DeriveFontListWithSizeDeltaAndStyle(0, style));
 118     text_label_->SetDisabledColor(SkColorSetARGB(127, 0, 0, 0));
 119     if (text_default_color_)
 120       text_label_->SetEnabledColor(text_default_color_);
 121     AddChildView(text_label_);
 122
 123     SetAccessibleName(text);
 124     return text_label_;
 125   }
 126   return AddLabel(text, style);
 127 }
 128
 129 void HoverHighlightView::SetExpandable(bool expandable) {
 130   if (expandable != expandable_) {
 131     expandable_ = expandable;
 132     InvalidateLayout();
 133   }
 134 }
 135
 136 bool HoverHighlightView::PerformAction(const ui::Event& event) {
 137   if (!listener_)
 138     return false;
 139   listener_->OnViewClicked(this);
 140   return true;
 141 }
 142
 143 void HoverHighlightView::GetAccessibleState(ui::AccessibleViewState* state) {
 144   ActionableView::GetAccessibleState(state);
 145
 146   if (checkable_) {
 147     state->role = ui::AccessibilityTypes::ROLE_CHECKBUTTON;
 148     state->state = checked_ ? ui::AccessibilityTypes::STATE_CHECKED : 0;
 149   }
 150 }
 151
 152 gfx::Size HoverHighlightView::GetPreferredSize() {
 153   gfx::Size size = ActionableView::GetPreferredSize();
 154   if (!expandable_ || size.height() < kTrayPopupItemHeight)
 155     size.set_height(kTrayPopupItemHeight);
 156   return size;
 157 }
 158
 159 int HoverHighlightView::GetHeightForWidth(int width) {
 160   return GetPreferredSize().height();
 161 }
 162
 163 void HoverHighlightView::OnMouseEntered(const ui::MouseEvent& event) {
 164   hover_ = true;
 165   if (text_highlight_color_ && text_label_)
 166     text_label_->SetEnabledColor(text_highlight_color_);
 167   SchedulePaint();
 168 }
 169
 170 void HoverHighlightView::OnMouseExited(const ui::MouseEvent& event) {
 171   hover_ = false;
 172   if (text_default_color_ && text_label_)
 173     text_label_->SetEnabledColor(text_default_color_);
 174   SchedulePaint();
 175 }
 176
 177 void HoverHighlightView::OnEnabledChanged() {
 178   for (int i = 0; i < child_count(); ++i)
 179     child_at(i)->SetEnabled(enabled());
 180 }
 181
 182 void HoverHighlightView::OnPaintBackground(gfx::Canvas* canvas) {
 183   canvas->DrawColor(hover_ ? highlight_color_ : default_color_);
 184 }
 185
 186 void HoverHighlightView::OnFocus() {
 187   ScrollRectToVisible(gfx::Rect(gfx::Point(), size()));
 188   ActionableView::OnFocus();
 189 }
 190
 191 }  // namespace internal
 192 }  // namespace ash