1 /*
2 * Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "modules/desktop_capture/win/selected_window_context.h"
12
13 namespace webrtc {
14
SelectedWindowContext(HWND selected_window,DesktopRect selected_window_rect,WindowCaptureHelperWin * window_capture_helper)15 SelectedWindowContext::SelectedWindowContext(
16 HWND selected_window,
17 DesktopRect selected_window_rect,
18 WindowCaptureHelperWin* window_capture_helper)
19 : selected_window_(selected_window),
20 selected_window_rect_(selected_window_rect),
21 window_capture_helper_(window_capture_helper) {
22 selected_window_thread_id_ =
23 GetWindowThreadProcessId(selected_window, &selected_window_process_id_);
24 }
25
IsSelectedWindowValid() const26 bool SelectedWindowContext::IsSelectedWindowValid() const {
27 return selected_window_thread_id_ != 0;
28 }
29
IsWindowOwnedBySelectedWindow(HWND hwnd) const30 bool SelectedWindowContext::IsWindowOwnedBySelectedWindow(HWND hwnd) const {
31 // This check works for drop-down menus & dialog pop-up windows. It doesn't
32 // work for context menus or tooltips, which are handled differently below.
33 if (GetAncestor(hwnd, GA_ROOTOWNER) == selected_window_) {
34 return true;
35 }
36
37 // Some pop-up windows aren't owned (e.g. context menus, tooltips); treat
38 // windows that belong to the same thread as owned.
39 DWORD enumerated_window_process_id = 0;
40 DWORD enumerated_window_thread_id =
41 GetWindowThreadProcessId(hwnd, &enumerated_window_process_id);
42 return enumerated_window_thread_id != 0 &&
43 enumerated_window_process_id == selected_window_process_id_ &&
44 enumerated_window_thread_id == selected_window_thread_id_;
45 }
46
IsWindowOverlappingSelectedWindow(HWND hwnd) const47 bool SelectedWindowContext::IsWindowOverlappingSelectedWindow(HWND hwnd) const {
48 return window_capture_helper_->AreWindowsOverlapping(hwnd, selected_window_,
49 selected_window_rect_);
50 }
51
selected_window() const52 HWND SelectedWindowContext::selected_window() const {
53 return selected_window_;
54 }
55
window_capture_helper() const56 WindowCaptureHelperWin* SelectedWindowContext::window_capture_helper() const {
57 return window_capture_helper_;
58 }
59
60 } // namespace webrtc
61