ui/views/mouse_watcher_view_host.h

   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 #ifndef UI_VIEWS_MOUSE_WATCHER_VIEW_HOST_H_
   6 #define UI_VIEWS_MOUSE_WATCHER_VIEW_HOST_H_
   7
   8 #include "ui/views/mouse_watcher.h"
   9
  10 namespace views {
  11
  12 class View;
  13
  14 class VIEWS_EXPORT MouseWatcherViewHost : public MouseWatcherHost {
  15  public:
  16   // Creates a new MouseWatcherViewHost. |hot_zone_insets| is added to the
  17   // bounds of the view to determine the active zone. For example, if
  18   // |hot_zone_insets.bottom()| is 10, then the listener is not notified if
  19   // the y coordinate is between the origin of the view and height of the view
  20   // plus 10.
  21   MouseWatcherViewHost(View* view, const gfx::Insets& hot_zone_insets);
  22   virtual ~MouseWatcherViewHost();
  23
  24   // MouseWatcherHost.
  25   virtual bool Contains(const gfx::Point& screen_point,
  26                         MouseEventType type) OVERRIDE;
  27
  28  private:
  29   bool IsCursorInViewZone(const gfx::Point& screen_point);
  30   bool IsMouseOverWindow();
  31
  32   // View we're listening for events over.
  33   View* view_;
  34   // Insets added to the bounds of the view.
  35   const gfx::Insets hot_zone_insets_;
  36
  37   DISALLOW_COPY_AND_ASSIGN(MouseWatcherViewHost);
  38 };
  39
  40 }  // namespace views
  41
  42 #endif  // UI_VIEWS_MOUSE_WATCHER_VIEW_HOST_H_