1 files changed, 56 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/x11/window_list_utils.h b/third_party/libwebrtc/modules/desktop_capture/linux/x11/window_list_utils.h
new file mode 100644
index 0000000000..923842df14
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/linux/x11/window_list_utils.h
@@ -0,0 +1,56 @@
+/*
+ *  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 MODULES_DESKTOP_CAPTURE_LINUX_X11_WINDOW_LIST_UTILS_H_
+#define MODULES_DESKTOP_CAPTURE_LINUX_X11_WINDOW_LIST_UTILS_H_
+
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <stdint.h>
+
+#include "api/function_view.h"
+#include "modules/desktop_capture/desktop_geometry.h"
+#include "modules/desktop_capture/linux/x11/x_atom_cache.h"
+
+namespace webrtc {
+
+// Synchronously iterates all on-screen windows in `cache`.display() in
+// decreasing z-order and sends them one-by-one to `on_window` function before
+// GetWindowList() returns. If `on_window` returns false, this function ignores
+// other windows and returns immediately. GetWindowList() returns false if
+// native APIs failed. If multiple screens are attached to the `display`, this
+// function returns false only when native APIs failed on all screens. Menus,
+// panels and minimized windows will be ignored.
+bool GetWindowList(XAtomCache* cache,
+                   rtc::FunctionView<bool(::Window)> on_window);
+
+// Returns WM_STATE property of the `window`. This function returns
+// WithdrawnState if the `window` is missing.
+int32_t GetWindowState(XAtomCache* cache, ::Window window);
+
+// Returns the rectangle of the `window` in the coordinates of `display`. This
+// function returns false if native APIs failed. If `attributes` is provided, it
+// will be filled with the attributes of `window`. The `rect` is in system
+// coordinate, i.e. the primary monitor always starts from (0, 0).
+bool GetWindowRect(::Display* display,
+                   ::Window window,
+                   DesktopRect* rect,
+                   XWindowAttributes* attributes = nullptr);
+
+// Creates a DesktopRect from `attributes`.
+template <typename T>
+DesktopRect DesktopRectFromXAttributes(const T& attributes) {
+  return DesktopRect::MakeXYWH(attributes.x, attributes.y, attributes.width,
+                               attributes.height);
+}
+
+}  // namespace webrtc
+
+#endif  // MODULES_DESKTOP_CAPTURE_LINUX_X11_WINDOW_LIST_UTILS_H_