It is time.

ui/views/mouse_watcher_view_host.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/views/mouse_watcher_view_host.h"
-
-#include "ui/gfx/screen.h"
-#include "ui/views/view.h"
-#include "ui/views/widget/widget.h"
-
-namespace views {
-
-MouseWatcherViewHost::MouseWatcherViewHost(View* view,
-                                           const gfx::Insets& hot_zone_insets)
-    : view_(view),
-      hot_zone_insets_(hot_zone_insets) {
-}
-
-MouseWatcherViewHost::~MouseWatcherViewHost() {
-}
-
-bool MouseWatcherViewHost::Contains(
-    const gfx::Point& screen_point,
-    MouseEventType type) {
-  bool in_view = IsCursorInViewZone(screen_point);
-  if (!in_view || (type == MOUSE_EXIT && !IsMouseOverWindow()))
-    return false;
-  return true;
-}
-
-// Returns whether or not the cursor is currently in the view's "zone" which
-// is defined as a slightly larger region than the view.
-bool MouseWatcherViewHost::IsCursorInViewZone(const gfx::Point& screen_point) {
-  gfx::Rect bounds = view_->GetLocalBounds();
-  gfx::Point view_topleft(bounds.origin());
-  View::ConvertPointToScreen(view_, &view_topleft);
-  bounds.set_origin(view_topleft);
-  bounds.SetRect(view_topleft.x() - hot_zone_insets_.left(),
-                 view_topleft.y() - hot_zone_insets_.top(),
-                 bounds.width() + hot_zone_insets_.width(),
-                 bounds.height() + hot_zone_insets_.height());
-
-  return bounds.Contains(screen_point.x(), screen_point.y());
-}
-
-// Returns true if the mouse is over the view's window.
-bool MouseWatcherViewHost::IsMouseOverWindow() {
-  Widget* widget = view_->GetWidget();
-  if (!widget)
-    return false;
-
-  return gfx::Screen::GetScreenFor(widget->GetNativeView())->
-      GetWindowUnderCursor() == widget->GetNativeWindow();
-}
-
-}  // namespace views