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