ui/aura/window_targeter.h

   1 // Copyright (c) 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 "ui/aura/aura_export.h"
   6 #include "ui/events/event_targeter.h"
   7
   8 namespace aura {
   9
  10 class Window;
  11
  12 class AURA_EXPORT WindowTargeter : public ui::EventTargeter {
  13  public:
  14   WindowTargeter();
  15   virtual ~WindowTargeter();
  16
  17  protected:
  18   bool WindowCanAcceptEvent(aura::Window* window,
  19                             const ui::LocatedEvent& event) const;
  20
  21   // Returns whether the location of the event is in an actionable region of the
  22   // window. Note that the location etc. of |event| is in the |window|'s
  23   // parent's coordinate system.
  24   virtual bool EventLocationInsideBounds(aura::Window* window,
  25                                          const ui::LocatedEvent& event) const;
  26
  27   // ui::EventTargeter:
  28   virtual ui::EventTarget* FindTargetForEvent(ui::EventTarget* root,
  29                                               ui::Event* event) OVERRIDE;
  30   virtual ui::EventTarget* FindTargetForLocatedEvent(
  31       ui::EventTarget* root,
  32       ui::LocatedEvent* event) OVERRIDE;
  33   virtual bool SubtreeShouldBeExploredForEvent(
  34       ui::EventTarget* target,
  35       const ui::LocatedEvent& event) OVERRIDE;
  36
  37  private:
  38   Window* FindTargetInRootWindow(Window* root_window,
  39                                  const ui::LocatedEvent& event);
  40
  41   DISALLOW_COPY_AND_ASSIGN(WindowTargeter);
  42 };
  43
  44 }  // namespace aura