Replace WindowUnderPoint free function with WindowFinder interface
WindowUnderPoint have different signatures on different platforms, which should
be abstract as an interface.
So this change adds a WindowFinder interface to replace WindowUnderPoint free
function. Meanwhile, this change also includes the implementation of
WindowFinderX11 for X11.
Bug: webrtc:7950
Change-Id: I897a50d4033e713b339b6b6f48b5dbbe601e8db0
Reviewed-on: https://chromium-review.googlesource.com/611745
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Commit-Queue: Zijie He <zijiehe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#19375}diff --git a/webrtc/modules/desktop_capture/window_finder_win.h b/webrtc/modules/desktop_capture/window_finder_win.h
new file mode 100644
index 0000000..ceec426
--- /dev/null
+++ b/webrtc/modules/desktop_capture/window_finder_win.h
@@ -0,0 +1,30 @@
+/*
+ * 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_FINDER_WIN_H_
+#define WEBRTC_MODULES_DESKTOP_CAPTURE_WINDOW_FINDER_WIN_H_
+
+#include "webrtc/modules/desktop_capture/window_finder.h"
+
+namespace webrtc {
+
+// The implementation of WindowFinder for Windows.
+class WindowFinderWin final : public WindowFinder {
+ public:
+ WindowFinderWin();
+ ~WindowFinderWin() override;
+
+ // WindowFinder implementation.
+ WindowId GetWindowUnderPoint(DesktopVector point) override;
+};
+
+} // namespace webrtc
+
+#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_WINDOW_FINDER_WIN_H_
