components/mus/view_locator.cc

   1 // Copyright 2015 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 "components/mus/view_locator.h"
   6
   7 #include "components/mus/server_view.h"
   8
   9 namespace mus {
  10
  11 const ServerView* FindDeepestVisibleView(const ServerView* view,
  12                                          const gfx::Point& location) {
  13   for (const ServerView* child : view->GetChildren()) {
  14     if (!child->visible())
  15       continue;
  16
  17     // TODO(sky): support transform.
  18     const gfx::Point child_location(location.x() - child->bounds().x(),
  19                                     location.y() - child->bounds().y());
  20     if (child_location.x() >= 0 && child_location.y() >= 0 &&
  21         child_location.x() < child->bounds().width() &&
  22         child_location.y() < child->bounds().height()) {
  23       return FindDeepestVisibleView(child, child_location);
  24     }
  25   }
  26   return view;
  27 }
  28
  29 ServerView* FindDeepestVisibleView(ServerView* view,
  30                                    const gfx::Point& location) {
  31   return const_cast<ServerView*>(
  32       FindDeepestVisibleView(const_cast<const ServerView*>(view), location));
  33 }
  34
  35 }  // namespace mus