src/ui/app_list/views/search_result_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 "ui/app_list/views/search_result_view.h"
   6
   7 #include <algorithm>
   8
   9 #include "ui/app_list/app_list_constants.h"
  10 #include "ui/app_list/search_result.h"
  11 #include "ui/app_list/views/progress_bar_view.h"
  12 #include "ui/app_list/views/search_result_actions_view.h"
  13 #include "ui/app_list/views/search_result_list_view.h"
  14 #include "ui/gfx/canvas.h"
  15 #include "ui/gfx/font.h"
  16 #include "ui/gfx/image/image_skia_operations.h"
  17 #include "ui/gfx/render_text.h"
  18 #include "ui/views/controls/button/image_button.h"
  19 #include "ui/views/controls/image_view.h"
  20 #include "ui/views/controls/menu/menu_item_view.h"
  21 #include "ui/views/controls/menu/menu_runner.h"
  22
  23 namespace app_list {
  24
  25 namespace {
  26
  27 const int kPreferredWidth = 300;
  28 const int kPreferredHeight = 52;
  29 const int kIconDimension = 32;
  30 const int kIconPadding = 14;
  31 const int kIconViewWidth = kIconDimension + 2 * kIconPadding;
  32 const int kTextTrailPadding = kIconPadding;
  33 const int kBorderSize = 1;
  34
  35 // Extra margin at the right of the rightmost action icon.
  36 const int kActionButtonRightMargin = 8;
  37
  38 // Creates a RenderText of given |text| and |styles|. Caller takes ownership
  39 // of returned RenderText.
  40 gfx::RenderText* CreateRenderText(const base::string16& text,
  41                                   const SearchResult::Tags& tags) {
  42   gfx::RenderText* render_text = gfx::RenderText::CreateInstance();
  43   render_text->SetText(text);
  44   render_text->SetColor(kResultDefaultTextColor);
  45
  46   for (SearchResult::Tags::const_iterator it = tags.begin();
  47        it != tags.end();
  48        ++it) {
  49     // NONE means default style so do nothing.
  50     if (it->styles == SearchResult::Tag::NONE)
  51       continue;
  52
  53     if (it->styles & SearchResult::Tag::MATCH)
  54       render_text->ApplyStyle(gfx::BOLD, true, it->range);
  55     if (it->styles & SearchResult::Tag::DIM)
  56       render_text->ApplyColor(kResultDimmedTextColor, it->range);
  57     else if (it->styles & SearchResult::Tag::URL)
  58       render_text->ApplyColor(kResultURLTextColor, it->range);
  59   }
  60
  61   return render_text;
  62 }
  63
  64 }  // namespace
  65
  66 // static
  67 const char SearchResultView::kViewClassName[] = "ui/app_list/SearchResultView";
  68
  69 SearchResultView::SearchResultView(SearchResultListView* list_view,
  70                                    SearchResultViewDelegate* delegate)
  71     : views::CustomButton(this),
  72       result_(NULL),
  73       list_view_(list_view),
  74       delegate_(delegate),
  75       icon_(new views::ImageView),
  76       actions_view_(new SearchResultActionsView(this)),
  77       progress_bar_(new ProgressBarView) {
  78   icon_->set_interactive(false);
  79
  80   AddChildView(icon_);
  81   AddChildView(actions_view_);
  82   AddChildView(progress_bar_);
  83   set_context_menu_controller(this);
  84 }
  85
  86 SearchResultView::~SearchResultView() {
  87   ClearResultNoRepaint();
  88 }
  89
  90 void SearchResultView::SetResult(SearchResult* result) {
  91   ClearResultNoRepaint();
  92
  93   result_ = result;
  94   if (result_)
  95     result_->AddObserver(this);
  96
  97   OnIconChanged();
  98   OnActionsChanged();
  99   UpdateTitleText();
 100   UpdateDetailsText();
 101   OnIsInstallingChanged();
 102   SchedulePaint();
 103 }
 104
 105 void SearchResultView::ClearResultNoRepaint() {
 106   if (result_)
 107     result_->RemoveObserver(this);
 108   result_ = NULL;
 109 }
 110
 111 void SearchResultView::UpdateTitleText() {
 112   if (!result_ || result_->title().empty()) {
 113     title_text_.reset();
 114   } else {
 115     title_text_.reset(CreateRenderText(result_->title(),
 116                                        result_->title_tags()));
 117   }
 118 }
 119
 120 void SearchResultView::UpdateDetailsText() {
 121   if (!result_ || result_->details().empty()) {
 122     details_text_.reset();
 123   } else {
 124     details_text_.reset(CreateRenderText(result_->details(),
 125                                          result_->details_tags()));
 126   }
 127 }
 128
 129 const char* SearchResultView::GetClassName() const {
 130   return kViewClassName;
 131 }
 132
 133 gfx::Size SearchResultView::GetPreferredSize() {
 134   return gfx::Size(kPreferredWidth, kPreferredHeight);
 135 }
 136
 137 void SearchResultView::Layout() {
 138   gfx::Rect rect(GetContentsBounds());
 139   if (rect.IsEmpty())
 140     return;
 141
 142   gfx::Rect icon_bounds(rect);
 143   icon_bounds.set_width(kIconViewWidth);
 144   icon_bounds.Inset(kIconPadding, (rect.height() - kIconDimension) / 2);
 145   icon_bounds.Intersect(rect);
 146   icon_->SetBoundsRect(icon_bounds);
 147
 148   const int max_actions_width =
 149       (rect.right() - kActionButtonRightMargin - icon_bounds.right()) / 2;
 150   int actions_width = std::min(max_actions_width,
 151                                actions_view_->GetPreferredSize().width());
 152
 153   gfx::Rect actions_bounds(rect);
 154   actions_bounds.set_x(rect.right() - kActionButtonRightMargin - actions_width);
 155   actions_bounds.set_width(actions_width);
 156   actions_view_->SetBoundsRect(actions_bounds);
 157
 158   const int progress_width = rect.width() / 5;
 159   const int progress_height = progress_bar_->GetPreferredSize().height();
 160   const gfx::Rect progress_bounds(
 161       rect.right() - kActionButtonRightMargin - progress_width,
 162       rect.y() + (rect.height() - progress_height) / 2,
 163       progress_width,
 164       progress_height);
 165   progress_bar_->SetBoundsRect(progress_bounds);
 166 }
 167
 168 void SearchResultView::ChildPreferredSizeChanged(views::View* child) {
 169   Layout();
 170 }
 171
 172 void SearchResultView::OnPaint(gfx::Canvas* canvas) {
 173   gfx::Rect rect(GetContentsBounds());
 174   if (rect.IsEmpty())
 175     return;
 176
 177   gfx::Rect content_rect(rect);
 178   content_rect.set_height(rect.height() - kBorderSize);
 179
 180   const bool selected = list_view_->IsResultViewSelected(this);
 181   const bool hover = state() == STATE_HOVERED || state() == STATE_PRESSED;
 182   if (selected)
 183     canvas->FillRect(content_rect, kSelectedColor);
 184   else if (hover)
 185     canvas->FillRect(content_rect, kHighlightedColor);
 186   else
 187     canvas->FillRect(content_rect, kContentsBackgroundColor);
 188
 189   gfx::Rect border_bottom = gfx::SubtractRects(rect, content_rect);
 190   canvas->FillRect(border_bottom, kResultBorderColor);
 191
 192   gfx::Rect text_bounds(rect);
 193   text_bounds.set_x(kIconViewWidth);
 194   if (actions_view_->visible()) {
 195     text_bounds.set_width(
 196         rect.width() - kIconViewWidth - kTextTrailPadding -
 197         actions_view_->bounds().width() -
 198         (actions_view_->has_children() ? kActionButtonRightMargin : 0));
 199   } else {
 200     text_bounds.set_width(
 201         rect.width() - kIconViewWidth - kTextTrailPadding -
 202         progress_bar_->bounds().width() - kActionButtonRightMargin);
 203   }
 204   text_bounds.set_x(GetMirroredXWithWidthInView(text_bounds.x(),
 205                                                 text_bounds.width()));
 206
 207   if (title_text_ && details_text_) {
 208     gfx::Size title_size(text_bounds.width(),
 209                          title_text_->GetStringSize().height());
 210     gfx::Size details_size(text_bounds.width(),
 211                            details_text_->GetStringSize().height());
 212     int total_height = title_size.height() + + details_size.height();
 213     int y = text_bounds.y() + (text_bounds.height() - total_height) / 2;
 214
 215     title_text_->SetDisplayRect(gfx::Rect(gfx::Point(text_bounds.x(), y),
 216                                           title_size));
 217     title_text_->Draw(canvas);
 218
 219     y += title_size.height();
 220     details_text_->SetDisplayRect(gfx::Rect(gfx::Point(text_bounds.x(), y),
 221                                             details_size));
 222     details_text_->Draw(canvas);
 223   } else if (title_text_) {
 224     gfx::Size title_size(text_bounds.width(),
 225                          title_text_->GetStringSize().height());
 226     gfx::Rect centered_title_rect(text_bounds);
 227     centered_title_rect.ClampToCenteredSize(title_size);
 228     title_text_->SetDisplayRect(centered_title_rect);
 229     title_text_->Draw(canvas);
 230   }
 231 }
 232
 233 void SearchResultView::ButtonPressed(views::Button* sender,
 234                                      const ui::Event& event) {
 235   DCHECK(sender == this);
 236
 237   delegate_->SearchResultActivated(this, event.flags());
 238 }
 239
 240 void SearchResultView::OnIconChanged() {
 241   gfx::ImageSkia image(result_ ? result_->icon() : gfx::ImageSkia());
 242   // Note this might leave the view with an old icon. But it is needed to avoid
 243   // flash when a SearchResult's icon is loaded asynchronously. In this case, it
 244   // looks nicer to keep the stale icon for a little while on screen instead of
 245   // clearing it out. It should work correctly as long as the SearchResult does
 246   // not forget to SetIcon when it's ready.
 247   if (image.isNull())
 248     return;
 249
 250   // Scales down big icons but leave small ones unchanged.
 251   if (image.width() > kIconDimension || image.height() > kIconDimension) {
 252     image = gfx::ImageSkiaOperations::CreateResizedImage(
 253         image,
 254         skia::ImageOperations::RESIZE_BEST,
 255         gfx::Size(kIconDimension, kIconDimension));
 256   } else {
 257     icon_->ResetImageSize();
 258   }
 259
 260   icon_->SetImage(image);
 261 }
 262
 263 void SearchResultView::OnActionsChanged() {
 264   actions_view_->SetActions(result_ ? result_->actions()
 265                                     : SearchResult::Actions());
 266 }
 267
 268 void SearchResultView::OnIsInstallingChanged() {
 269   const bool is_installing = result_ && result_->is_installing();
 270   actions_view_->SetVisible(!is_installing);
 271   progress_bar_->SetVisible(is_installing);
 272 }
 273
 274 void SearchResultView::OnPercentDownloadedChanged() {
 275   progress_bar_->SetValue(result_->percent_downloaded() / 100.0);
 276 }
 277
 278 void SearchResultView::OnItemInstalled() {
 279   delegate_->OnSearchResultInstalled(this);
 280 }
 281
 282 void SearchResultView::OnItemUninstalled() {
 283   delegate_->OnSearchResultUninstalled(this);
 284 }
 285
 286 void SearchResultView::OnSearchResultActionActivated(size_t index,
 287                                                      int event_flags) {
 288   DCHECK(result_);
 289   DCHECK_LT(index, result_->actions().size());
 290
 291   delegate_->SearchResultActionActivated(this, index, event_flags);
 292 }
 293
 294 void SearchResultView::ShowContextMenuForView(views::View* source,
 295                                               const gfx::Point& point,
 296                                               ui::MenuSourceType source_type) {
 297   ui::MenuModel* menu_model = result_->GetContextMenuModel();
 298   if (!menu_model)
 299     return;
 300
 301   context_menu_runner_.reset(new views::MenuRunner(menu_model));
 302   if (context_menu_runner_->RunMenuAt(
 303           GetWidget(), NULL, gfx::Rect(point, gfx::Size()),
 304           views::MenuItemView::TOPLEFT, source_type,
 305           views::MenuRunner::HAS_MNEMONICS) ==
 306       views::MenuRunner::MENU_DELETED)
 307     return;
 308 }
 309
 310 }  // namespace app_list