chrome/browser/ui/views/autofill/tooltip_icon.cc

   1 // Copyright 2013 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/autofill/tooltip_icon.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/timer/timer.h"
   9 #include "chrome/browser/ui/views/autofill/info_bubble.h"
  10 #include "grit/theme_resources.h"
  11 #include "ui/accessibility/ax_view_state.h"
  12 #include "ui/base/resource/resource_bundle.h"
  13 #include "ui/views/bubble/bubble_frame_view.h"
  14 #include "ui/views/mouse_watcher_view_host.h"
  15 #include "ui/views/painter.h"
  16
  17 namespace autofill {
  18
  19 namespace {
  20
  21 gfx::Insets GetPreferredInsets(const views::View* view) {
  22   gfx::Size pref_size = view->GetPreferredSize();
  23   gfx::Rect local_bounds = view->GetLocalBounds();
  24   gfx::Point origin = local_bounds.CenterPoint();
  25   origin.Offset(-pref_size.width() / 2, -pref_size.height() / 2);
  26   return gfx::Insets(origin.y(),
  27                      origin.x(),
  28                      local_bounds.bottom() - (origin.y() + pref_size.height()),
  29                      local_bounds.right() - (origin.x() + pref_size.width()));
  30 }
  31
  32 // An info bubble with some extra positioning magic for tooltip icons.
  33 class TooltipBubble : public InfoBubble {
  34  public:
  35   TooltipBubble(views::View* anchor, const base::string16& message)
  36       : InfoBubble(anchor, message) {}
  37   virtual ~TooltipBubble() {}
  38
  39  protected:
  40   // InfoBubble:
  41   virtual gfx::Rect GetAnchorRect() const OVERRIDE {
  42     gfx::Rect bounds = views::BubbleDelegateView::GetAnchorRect();
  43     bounds.Inset(GetPreferredInsets(anchor()));
  44     return bounds;
  45   }
  46
  47  private:
  48   DISALLOW_COPY_AND_ASSIGN(TooltipBubble);
  49 };
  50
  51 }  // namespace
  52
  53 TooltipIcon::TooltipIcon(const base::string16& tooltip)
  54     : tooltip_(tooltip),
  55       mouse_inside_(false),
  56       bubble_(NULL),
  57       observer_(this) {
  58   ChangeImageTo(IDR_AUTOFILL_TOOLTIP_ICON);
  59 }
  60
  61 TooltipIcon::~TooltipIcon() {
  62   HideBubble();
  63 }
  64
  65 // static
  66 const char TooltipIcon::kViewClassName[] = "autofill/TooltipIcon";
  67
  68 const char* TooltipIcon::GetClassName() const {
  69   return TooltipIcon::kViewClassName;
  70 }
  71
  72 void TooltipIcon::OnMouseEntered(const ui::MouseEvent& event) {
  73   mouse_inside_ = true;
  74   show_timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(150), this,
  75                     &TooltipIcon::ShowBubble);
  76 }
  77
  78 void TooltipIcon::OnMouseExited(const ui::MouseEvent& event) {
  79   show_timer_.Stop();
  80 }
  81
  82 void TooltipIcon::OnGestureEvent(ui::GestureEvent* event) {
  83   if (event->type() == ui::ET_GESTURE_TAP) {
  84     ShowBubble();
  85     event->SetHandled();
  86   }
  87 }
  88
  89 void TooltipIcon::GetAccessibleState(ui::AXViewState* state) {
  90   state->name = tooltip_;
  91 }
  92
  93 void TooltipIcon::MouseMovedOutOfHost() {
  94   if (IsMouseHovered()) {
  95     mouse_watcher_->Start();
  96     return;
  97   }
  98
  99   mouse_inside_ = false;
 100   HideBubble();
 101 }
 102
 103 void TooltipIcon::ChangeImageTo(int idr) {
 104   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
 105   SetImage(rb.GetImageNamed(idr).ToImageSkia());
 106 }
 107
 108 void TooltipIcon::ShowBubble() {
 109   if (bubble_)
 110     return;
 111
 112   ChangeImageTo(IDR_AUTOFILL_TOOLTIP_ICON_H);
 113
 114   bubble_ = new TooltipBubble(this, tooltip_);
 115   // When shown due to a gesture event, close on deactivate (i.e. don't use
 116   // "focusless").
 117   bubble_->set_use_focusless(mouse_inside_);
 118
 119   bubble_->Show();
 120   observer_.Add(bubble_->GetWidget());
 121
 122   if (mouse_inside_) {
 123     views::View* frame = bubble_->GetWidget()->non_client_view()->frame_view();
 124     scoped_ptr<views::MouseWatcherHost> host(
 125         new views::MouseWatcherViewHost(frame, gfx::Insets()));
 126     mouse_watcher_.reset(new views::MouseWatcher(host.release(), this));
 127     mouse_watcher_->Start();
 128   }
 129 }
 130
 131 void TooltipIcon::HideBubble() {
 132   if (bubble_)
 133     bubble_->Hide();
 134 }
 135
 136 void TooltipIcon::OnWidgetDestroyed(views::Widget* widget) {
 137   observer_.Remove(widget);
 138
 139   ChangeImageTo(IDR_AUTOFILL_TOOLTIP_ICON);
 140   mouse_watcher_.reset();
 141   bubble_ = NULL;
 142 }
 143
 144 }  // namespace autofill