src/chrome/browser/chromeos/input_method/infolist_window_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 #include "chrome/browser/chromeos/input_method/infolist_window_view.h"
   5
   6 #include <limits>
   7 #include <string>
   8 #include <vector>
   9
  10 #include "ash/shell.h"
  11 #include "base/logging.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/strings/utf_string_conversions.h"
  14 #include "chrome/browser/chromeos/input_method/candidate_window_constants.h"
  15 #include "chrome/browser/chromeos/input_method/hidable_area.h"
  16 #include "grit/generated_resources.h"
  17 #include "ui/base/l10n/l10n_util.h"
  18 #include "ui/gfx/color_utils.h"
  19 #include "ui/gfx/font.h"
  20 #include "ui/native_theme/native_theme.h"
  21 #include "ui/views/controls/label.h"
  22 #include "ui/views/layout/box_layout.h"
  23 #include "ui/views/layout/grid_layout.h"
  24 #include "ui/views/widget/widget.h"
  25
  26 namespace chromeos {
  27 namespace input_method {
  28
  29 // InfolistRow renderes a row of a infolist.
  30 class InfolistEntryView : public views::View {
  31  public:
  32   InfolistEntryView();
  33   virtual ~InfolistEntryView() {}
  34
  35   void Init(const gfx::Font& title_font, const gfx::Font& description_font);
  36
  37   // Sets title text and description text.
  38   void Relayout(const InfolistWindowView::Entry& entry);
  39
  40   // Selects the infolist row. Changes the appearance to make it look
  41   // like a selected candidate.
  42   void Select();
  43
  44   // Unselects the infolist row. Changes the appearance to make it look
  45   // like an unselected candidate.
  46   void Unselect();
  47
  48  protected:
  49   virtual gfx::Size GetPreferredSize() OVERRIDE {
  50     return title_and_description_size_;
  51   }
  52
  53  private:
  54   // Notifies labels of their new background colors.  Called whenever the view's
  55   // background color changes.
  56   void UpdateLabelBackgroundColors();
  57
  58   // The parent candidate window that contains this view.
  59   InfolistWindowView* parent_infolist_window_;
  60
  61   // Views created in the class will be part of tree of |this|, so these
  62   // child views will be deleted when |this| is deleted.
  63
  64   // The title label.
  65   views::Label* title_label_;
  66   // The description label.
  67   views::Label* description_label_;
  68   // Whether the item is selected.
  69   bool selected_;
  70   // The size of the area which contains the title and the description.
  71   gfx::Size title_and_description_size_;
  72
  73   DISALLOW_COPY_AND_ASSIGN(InfolistEntryView);
  74 };
  75
  76 InfolistEntryView::InfolistEntryView()
  77     : title_label_(NULL),
  78       description_label_(NULL),
  79       selected_(false) {
  80 }
  81
  82 void InfolistEntryView::Init(const gfx::Font& title_font,
  83                              const gfx::Font& description_font) {
  84   title_label_ = new views::Label;
  85   title_label_->SetPosition(gfx::Point(0, 0));
  86   title_label_->SetFont(title_font);
  87   title_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  88   title_label_->set_border(
  89       views::Border::CreateEmptyBorder(4, 7, 2, 4));
  90
  91   description_label_ = new views::Label;
  92   description_label_->SetPosition(gfx::Point(0, 0));
  93   description_label_->SetFont(description_font);
  94   description_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  95   description_label_->SetMultiLine(true);
  96   description_label_->set_border(
  97       views::Border::CreateEmptyBorder(2, 17, 4, 4));
  98   AddChildView(title_label_);
  99   AddChildView(description_label_);
 100   UpdateLabelBackgroundColors();
 101 }
 102
 103 void InfolistEntryView::Relayout(const InfolistWindowView::Entry& entry) {
 104   const string16 title = UTF8ToUTF16(entry.title);
 105   const string16 description = UTF8ToUTF16(entry.body);
 106
 107   if ((title_label_->text() == title) &&
 108       (description_label_->text() == description)) {
 109     return;
 110   }
 111
 112   title_label_->SetText(title);
 113   const gfx::Size title_size = title_label_->GetPreferredSize();
 114   title_label_->SetSize(title_size);
 115
 116   description_label_->SetText(description);
 117   description_label_->SizeToFit(200);
 118   const gfx::Size description_size = description_label_->size();
 119   description_label_->SetPosition(gfx::Point(0, title_size.height()));
 120
 121   title_and_description_size_ =
 122       gfx::Size(200, description_size.height() + title_size.height());
 123 }
 124
 125 void InfolistEntryView::Select() {
 126   if (selected_)
 127     return;
 128   selected_ = true;
 129   set_background(
 130       views::Background::CreateSolidBackground(GetNativeTheme()->GetSystemColor(
 131           ui::NativeTheme::kColorId_TextfieldSelectionBackgroundFocused)));
 132   set_border(
 133       views::Border::CreateSolidBorder(1, GetNativeTheme()->GetSystemColor(
 134           ui::NativeTheme::kColorId_FocusedBorderColor)));
 135   UpdateLabelBackgroundColors();
 136 }
 137
 138 void InfolistEntryView::Unselect() {
 139   if (!selected_)
 140     return;
 141   selected_ = false;
 142   set_background(NULL);
 143   set_border(views::Border::CreateEmptyBorder(1, 1, 1, 1));
 144   UpdateLabelBackgroundColors();
 145 }
 146
 147 void InfolistEntryView::UpdateLabelBackgroundColors() {
 148   SkColor color = background() ?
 149       background()->get_color() :
 150       GetNativeTheme()->GetSystemColor(
 151           ui::NativeTheme::kColorId_WindowBackground);
 152   title_label_->SetBackgroundColor(color);
 153   description_label_->SetBackgroundColor(color);
 154 }
 155
 156 ///////////////////////////////////////////////////////////////////////////////
 157 // InfolistWindowView
 158
 159 InfolistWindowView::InfolistWindowView()
 160     : infolist_area_(new views::View),
 161       title_font_(new gfx::Font(kJapaneseFontName, kFontSizeDelta + 15)),
 162       description_font_(new gfx::Font(kJapaneseFontName, kFontSizeDelta + 11)) {
 163 }
 164
 165 InfolistWindowView::~InfolistWindowView() {
 166   infolist_area_->RemoveAllChildViews(false);
 167 }
 168
 169 void InfolistWindowView::Init() {
 170   set_background(
 171       views::Background::CreateSolidBackground(GetNativeTheme()->GetSystemColor(
 172           ui::NativeTheme::kColorId_WindowBackground)));
 173   set_border(
 174       views::Border::CreateSolidBorder(1, GetNativeTheme()->GetSystemColor(
 175           ui::NativeTheme::kColorId_MenuBorderColor)));
 176
 177   views::BoxLayout* layout = new views::BoxLayout(views::BoxLayout::kVertical,
 178                                                   0, 0, 0);
 179   SetLayoutManager(layout);  // |this| owns |layout|.
 180
 181   views::Label* caption_label = new views::Label;
 182   caption_label->SetFont(caption_label->font().DeriveFont(kFontSizeDelta - 2));
 183   caption_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 184   caption_label->SetText(
 185       l10n_util::GetStringUTF16(IDS_INPUT_METHOD_INFOLIST_WINDOW_TITLE));
 186   caption_label->SetEnabledColor(GetNativeTheme()->GetSystemColor(
 187       ui::NativeTheme::kColorId_LabelEnabledColor));
 188   caption_label->set_border(views::Border::CreateEmptyBorder(2, 2, 2, 2));
 189   caption_label->set_background(views::Background::CreateSolidBackground(
 190       color_utils::AlphaBlend(SK_ColorBLACK,
 191                               GetNativeTheme()->GetSystemColor(
 192                                   ui::NativeTheme::kColorId_WindowBackground),
 193                               0x10)));
 194   caption_label->SetBackgroundColor(caption_label->background()->get_color());
 195
 196   AddChildView(caption_label);
 197   AddChildView(infolist_area_);
 198 }
 199
 200 void InfolistWindowView::Relayout(const std::vector<Entry>& entries,
 201                                   size_t focused_index) {
 202   infolist_area_->RemoveAllChildViews(false);
 203   if (entries.empty())
 204     return;
 205
 206   for (size_t i = infolist_views_.size(); i < entries.size(); ++i) {
 207     InfolistEntryView* infolist_row = new InfolistEntryView();
 208     infolist_row->Init(*title_font_.get(), *description_font_.get());
 209     infolist_views_.push_back(infolist_row);
 210   }
 211
 212   views::BoxLayout* layout = new views::BoxLayout(views::BoxLayout::kVertical,
 213                                                   0, 0, 0);
 214   // |infolist_area_| owns |layout|.
 215   infolist_area_->SetLayoutManager(layout);
 216
 217   for (size_t i = 0; i < entries.size(); ++i) {
 218     InfolistEntryView* infolist_row = infolist_views_[i];
 219     infolist_row->Relayout(entries[i]);
 220     infolist_row->Unselect();
 221     infolist_area_->AddChildView(infolist_row);
 222   }
 223   if (focused_index < infolist_views_.size())
 224     infolist_views_[focused_index]->Select();
 225   infolist_area_->SchedulePaint();
 226 }
 227
 228 // static
 229 const size_t InfolistWindowView::InvalidFocusIndex() {
 230   return std::numeric_limits<size_t>::max();
 231 }
 232
 233 }  // namespace input_method
 234 }  // namespace chromeos