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