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/views/mouse_watcher_view_host.h"
6
7#include "ui/gfx/screen.h"
8#include "ui/views/view.h"
9#include "ui/views/widget/widget.h"
10
11namespace views {
12
13MouseWatcherViewHost::MouseWatcherViewHost(View* view,
14                                           const gfx::Insets& hot_zone_insets)
15    : view_(view),
16      hot_zone_insets_(hot_zone_insets) {
17}
18
19MouseWatcherViewHost::~MouseWatcherViewHost() {
20}
21
22bool MouseWatcherViewHost::Contains(
23    const gfx::Point& screen_point,
24    MouseEventType type) {
25  bool in_view = IsCursorInViewZone(screen_point);
26  if (!in_view || (type == MOUSE_EXIT && !IsMouseOverWindow()))
27    return false;
28  return true;
29}
30
31// Returns whether or not the cursor is currently in the view's "zone" which
32// is defined as a slightly larger region than the view.
33bool MouseWatcherViewHost::IsCursorInViewZone(const gfx::Point& screen_point) {
34  gfx::Rect bounds = view_->GetLocalBounds();
35  gfx::Point view_topleft(bounds.origin());
36  View::ConvertPointToScreen(view_, &view_topleft);
37  bounds.set_origin(view_topleft);
38  bounds.SetRect(view_topleft.x() - hot_zone_insets_.left(),
39                 view_topleft.y() - hot_zone_insets_.top(),
40                 bounds.width() + hot_zone_insets_.width(),
41                 bounds.height() + hot_zone_insets_.height());
42
43  return bounds.Contains(screen_point.x(), screen_point.y());
44}
45
46// Returns true if the mouse is over the view's window.
47bool MouseWatcherViewHost::IsMouseOverWindow() {
48  Widget* widget = view_->GetWidget();
49  if (!widget)
50    return false;
51
52  return gfx::Screen::GetScreenFor(widget->GetNativeView())->
53      GetWindowUnderCursor() == widget->GetNativeWindow();
54}
55
56}  // namespace views
57