webrtc_m130/webrtc/modules/desktop_capture/window_under_point.h
Zijie He b010a3242b Implement WindowUnderPoint() for Mac OSX and Windows
WindowUnderPoint() is a platform independent function to return the id of the
first window in z-order under a certain DesktopVector. It equals to
GetAncestor(WindowFromPoint(point), GA_ROOT)
on Windows.

This CL includes the change to Windows / Mac OSX only to control the size in a
reasonable range. Implementation for Linux will be added in a coming change.

Bug: webrtc:7950
Change-Id: I57e423294fc8aeaa12d05cb626a1912240b2d4d0
Reviewed-on: https://chromium-review.googlesource.com/595022
Commit-Queue: Zijie He <zijiehe@chromium.org>
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#19263}
2017-08-08 01:30:38 +00:00

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/*
* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_WINDOW_UNDER_POINT_H_
#define WEBRTC_MODULES_DESKTOP_CAPTURE_WINDOW_UNDER_POINT_H_
#include "webrtc/modules/desktop_capture/desktop_capture_types.h"
#include "webrtc/modules/desktop_capture/desktop_geometry.h"
namespace webrtc {
// Returns the id of the visible window under |point|. This function returns
// kNullWindowId if no window is under |point| and the platform does not have
// "root window" concept, i.e. the visible area under |point| is the desktop.
WindowId GetWindowUnderPoint(DesktopVector point);
} // namespace webrtc
#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_WINDOW_UNDER_POINT_H_