diff options
Diffstat (limited to 'third_party/libwebrtc/modules/desktop_capture/window_finder_win.cc')
-rw-r--r-- | third_party/libwebrtc/modules/desktop_capture/window_finder_win.cc | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/desktop_capture/window_finder_win.cc b/third_party/libwebrtc/modules/desktop_capture/window_finder_win.cc new file mode 100644 index 0000000000..a8c3d39e19 --- /dev/null +++ b/third_party/libwebrtc/modules/desktop_capture/window_finder_win.cc @@ -0,0 +1,46 @@ +/* + * 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. + */ + +#include "modules/desktop_capture/window_finder_win.h" + +#include <windows.h> + +#include <memory> + +namespace webrtc { + +WindowFinderWin::WindowFinderWin() = default; +WindowFinderWin::~WindowFinderWin() = default; + +WindowId WindowFinderWin::GetWindowUnderPoint(DesktopVector point) { + HWND window = WindowFromPoint(POINT{point.x(), point.y()}); + if (!window) { + return kNullWindowId; + } + + // The difference between GA_ROOTOWNER and GA_ROOT can be found at + // https://groups.google.com/a/chromium.org/forum/#!topic/chromium-dev/Hirr_DkuZdw. + // In short, we should use GA_ROOT, since we only care about the root window + // but not the owner. + window = GetAncestor(window, GA_ROOT); + if (!window) { + return kNullWindowId; + } + + return reinterpret_cast<WindowId>(window); +} + +// static +std::unique_ptr<WindowFinder> WindowFinder::Create( + const WindowFinder::Options& options) { + return std::make_unique<WindowFinderWin>(); +} + +} // namespace webrtc |