chrome/browser/ui/views/location_bar/zoom_bubble_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 "chrome/browser/ui/views/location_bar/zoom_bubble_view.h"
   6
   7 #include "base/i18n/rtl.h"
   8 #include "chrome/browser/chrome_notification_types.h"
   9 #include "chrome/browser/chrome_page_zoom.h"
  10 #include "chrome/browser/ui/browser.h"
  11 #include "chrome/browser/ui/browser_finder.h"
  12 #include "chrome/browser/ui/browser_window.h"
  13 #include "chrome/browser/ui/views/frame/browser_view.h"
  14 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
  15 #include "chrome/browser/ui/views/location_bar/zoom_view.h"
  16 #include "chrome/browser/ui/zoom/zoom_controller.h"
  17 #include "content/public/browser/notification_source.h"
  18 #include "grit/generated_resources.h"
  19 #include "ui/base/l10n/l10n_util.h"
  20 #include "ui/base/resource/resource_bundle.h"
  21 #include "ui/views/controls/button/label_button.h"
  22 #include "ui/views/controls/separator.h"
  23 #include "ui/views/layout/box_layout.h"
  24 #include "ui/views/layout/layout_constants.h"
  25 #include "ui/views/widget/widget.h"
  26
  27 namespace {
  28
  29 // The number of milliseconds the bubble should stay on the screen if it will
  30 // close automatically.
  31 const int kBubbleCloseDelay = 1500;
  32
  33 // The bubble's padding from the screen edge, used in fullscreen.
  34 const int kFullscreenPaddingEnd = 20;
  35
  36 }  // namespace
  37
  38 // static
  39 ZoomBubbleView* ZoomBubbleView::zoom_bubble_ = NULL;
  40
  41 // static
  42 void ZoomBubbleView::ShowBubble(content::WebContents* web_contents,
  43                                 bool auto_close) {
  44   Browser* browser = chrome::FindBrowserWithWebContents(web_contents);
  45   DCHECK(browser && browser->window() && browser->fullscreen_controller());
  46
  47   BrowserView* browser_view = BrowserView::GetBrowserViewForBrowser(browser);
  48   bool is_fullscreen = browser_view->IsFullscreen();
  49   bool anchor_to_view = !is_fullscreen ||
  50       browser_view->immersive_mode_controller()->IsRevealed();
  51   views::View* anchor_view = anchor_to_view ?
  52       browser_view->GetLocationBarView()->zoom_view() : NULL;
  53
  54   // If the bubble is already showing in this window and its |auto_close_| value
  55   // is equal to |auto_close|, the bubble can be reused and only the label text
  56   // needs to be updated.
  57   if (zoom_bubble_ &&
  58       zoom_bubble_->GetAnchorView() == anchor_view &&
  59       zoom_bubble_->auto_close_ == auto_close) {
  60     zoom_bubble_->Refresh();
  61   } else {
  62     // If the bubble is already showing but its |auto_close_| value is not equal
  63     // to |auto_close|, the bubble's focus properties must change, so the
  64     // current bubble must be closed and a new one created.
  65     CloseBubble();
  66
  67     zoom_bubble_ = new ZoomBubbleView(anchor_view,
  68                                       web_contents,
  69                                       auto_close,
  70                                       browser_view->immersive_mode_controller(),
  71                                       browser->fullscreen_controller());
  72
  73     // If we do not have an anchor view, parent the bubble to the content area.
  74     if (!anchor_to_view) {
  75       zoom_bubble_->set_parent_window(web_contents->GetTopLevelNativeWindow());
  76     }
  77
  78     views::BubbleDelegateView::CreateBubble(zoom_bubble_);
  79
  80     // Adjust for fullscreen after creation as it relies on the content size.
  81     if (is_fullscreen)
  82       zoom_bubble_->AdjustForFullscreen(browser_view->GetBoundsInScreen());
  83
  84     if (zoom_bubble_->use_focusless())
  85       zoom_bubble_->GetWidget()->ShowInactive();
  86     else
  87       zoom_bubble_->GetWidget()->Show();
  88   }
  89 }
  90
  91 // static
  92 void ZoomBubbleView::CloseBubble() {
  93   if (zoom_bubble_)
  94     zoom_bubble_->Close();
  95 }
  96
  97 // static
  98 bool ZoomBubbleView::IsShowing() {
  99   // The bubble may be in the process of closing.
 100   return zoom_bubble_ != NULL && zoom_bubble_->GetWidget()->IsVisible();
 101 }
 102
 103 // static
 104 const ZoomBubbleView* ZoomBubbleView::GetZoomBubbleForTest() {
 105   return zoom_bubble_;
 106 }
 107
 108 ZoomBubbleView::ZoomBubbleView(
 109     views::View* anchor_view,
 110     content::WebContents* web_contents,
 111     bool auto_close,
 112     ImmersiveModeController* immersive_mode_controller,
 113     FullscreenController* fullscreen_controller)
 114     : BubbleDelegateView(anchor_view, anchor_view ?
 115           views::BubbleBorder::TOP_RIGHT : views::BubbleBorder::NONE),
 116       label_(NULL),
 117       web_contents_(web_contents),
 118       auto_close_(auto_close),
 119       immersive_mode_controller_(immersive_mode_controller) {
 120   // Compensate for built-in vertical padding in the anchor view's image.
 121   set_anchor_view_insets(gfx::Insets(5, 0, 5, 0));
 122   set_use_focusless(auto_close);
 123   set_notify_enter_exit_on_child(true);
 124
 125   // Add observers to close the bubble if the fullscreen state or immersive
 126   // fullscreen revealed state changes.
 127   registrar_.Add(this,
 128                  chrome::NOTIFICATION_FULLSCREEN_CHANGED,
 129                  content::Source<FullscreenController>(fullscreen_controller));
 130   immersive_mode_controller_->AddObserver(this);
 131 }
 132
 133 ZoomBubbleView::~ZoomBubbleView() {
 134   if (immersive_mode_controller_)
 135     immersive_mode_controller_->RemoveObserver(this);
 136 }
 137
 138 void ZoomBubbleView::AdjustForFullscreen(const gfx::Rect& screen_bounds) {
 139   if (GetAnchorView())
 140     return;
 141
 142   // TODO(dbeam): should RTL logic be done in views::BubbleDelegateView?
 143   const size_t bubble_half_width = width() / 2;
 144   const int x_pos = base::i18n::IsRTL() ?
 145       screen_bounds.x() + bubble_half_width + kFullscreenPaddingEnd :
 146       screen_bounds.right() - bubble_half_width - kFullscreenPaddingEnd;
 147   SetAnchorRect(gfx::Rect(x_pos, screen_bounds.y(), 0, 0));
 148 }
 149
 150 void ZoomBubbleView::Refresh() {
 151   ZoomController* zoom_controller =
 152       ZoomController::FromWebContents(web_contents_);
 153   int zoom_percent = zoom_controller->zoom_percent();
 154   label_->SetText(
 155       l10n_util::GetStringFUTF16Int(IDS_TOOLTIP_ZOOM, zoom_percent));
 156   StartTimerIfNecessary();
 157 }
 158
 159 void ZoomBubbleView::Close() {
 160   GetWidget()->Close();
 161 }
 162
 163 void ZoomBubbleView::StartTimerIfNecessary() {
 164   if (auto_close_) {
 165     if (timer_.IsRunning()) {
 166       timer_.Reset();
 167     } else {
 168       timer_.Start(
 169           FROM_HERE,
 170           base::TimeDelta::FromMilliseconds(kBubbleCloseDelay),
 171           this,
 172           &ZoomBubbleView::Close);
 173     }
 174   }
 175 }
 176
 177 void ZoomBubbleView::StopTimer() {
 178   timer_.Stop();
 179 }
 180
 181 void ZoomBubbleView::OnMouseEntered(const ui::MouseEvent& event) {
 182   set_use_focusless(false);
 183   StopTimer();
 184 }
 185
 186 void ZoomBubbleView::OnMouseExited(const ui::MouseEvent& event) {
 187   set_use_focusless(auto_close_);
 188   StartTimerIfNecessary();
 189 }
 190
 191 void ZoomBubbleView::OnGestureEvent(ui::GestureEvent* event) {
 192   if (!zoom_bubble_ || !zoom_bubble_->auto_close_ ||
 193       event->type() != ui::ET_GESTURE_TAP) {
 194     return;
 195   }
 196
 197   // If an auto-closing bubble was tapped, show a non-auto-closing bubble in
 198   // its place.
 199   ShowBubble(zoom_bubble_->web_contents_, false);
 200   event->SetHandled();
 201 }
 202
 203 void ZoomBubbleView::ButtonPressed(views::Button* sender,
 204                                    const ui::Event& event) {
 205   chrome_page_zoom::Zoom(web_contents_, content::PAGE_ZOOM_RESET);
 206 }
 207
 208 void ZoomBubbleView::Init() {
 209   SetLayoutManager(new views::BoxLayout(views::BoxLayout::kVertical,
 210       0, 0, views::kRelatedControlVerticalSpacing));
 211
 212   ZoomController* zoom_controller =
 213       ZoomController::FromWebContents(web_contents_);
 214   int zoom_percent = zoom_controller->zoom_percent();
 215   label_ = new views::Label(
 216       l10n_util::GetStringFUTF16Int(IDS_TOOLTIP_ZOOM, zoom_percent));
 217   label_->SetFontList(
 218       ui::ResourceBundle::GetSharedInstance().GetFontList(
 219           ui::ResourceBundle::MediumFont));
 220   AddChildView(label_);
 221
 222   views::LabelButton* set_default_button = new views::LabelButton(
 223       this, l10n_util::GetStringUTF16(IDS_ZOOM_SET_DEFAULT));
 224   set_default_button->SetStyle(views::Button::STYLE_BUTTON);
 225   set_default_button->SetHorizontalAlignment(gfx::ALIGN_CENTER);
 226   AddChildView(set_default_button);
 227
 228   StartTimerIfNecessary();
 229 }
 230
 231 void ZoomBubbleView::Observe(int type,
 232                              const content::NotificationSource& source,
 233                              const content::NotificationDetails& details) {
 234   DCHECK_EQ(type, chrome::NOTIFICATION_FULLSCREEN_CHANGED);
 235   CloseBubble();
 236 }
 237
 238 void ZoomBubbleView::OnImmersiveRevealStarted() {
 239   CloseBubble();
 240 }
 241
 242 void ZoomBubbleView::OnImmersiveModeControllerDestroyed() {
 243   immersive_mode_controller_ = NULL;
 244 }
 245
 246 void ZoomBubbleView::WindowClosing() {
 247   // |zoom_bubble_| can be a new bubble by this point (as Close(); doesn't
 248   // call this right away). Only set to NULL when it's this bubble.
 249   if (zoom_bubble_ == this)
 250     zoom_bubble_ = NULL;
 251 }