60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
/*
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* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/desktop_capture/win/selected_window_context.h"
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namespace webrtc {
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SelectedWindowContext::SelectedWindowContext(
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HWND selected_window,
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DesktopRect selected_window_rect,
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WindowCaptureHelperWin* window_capture_helper)
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: selected_window_(selected_window),
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selected_window_rect_(selected_window_rect),
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window_capture_helper_(window_capture_helper) {
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selected_window_thread_id_ =
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GetWindowThreadProcessId(selected_window, &selected_window_process_id_);
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}
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bool SelectedWindowContext::IsSelectedWindowValid() const {
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return selected_window_thread_id_ != 0;
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}
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bool SelectedWindowContext::IsWindowOwnedBySelectedWindow(HWND hwnd) const {
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// This check works for drop-down menus & dialog pop-up windows.
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if (GetAncestor(hwnd, GA_ROOTOWNER) == selected_window_) {
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return true;
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}
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// Assume that all other windows are unrelated to the selected window.
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// This will cause some windows that are actually related to be missed,
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// e.g. context menus and tool-tips, but avoids the risk of capturing
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// unrelated windows. Using heuristics such as matching the thread and
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// process Ids suffers from false-positives, e.g. in multi-document
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// applications.
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return false;
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}
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bool SelectedWindowContext::IsWindowOverlappingSelectedWindow(HWND hwnd) const {
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return window_capture_helper_->AreWindowsOverlapping(hwnd, selected_window_,
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selected_window_rect_);
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}
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HWND SelectedWindowContext::selected_window() const {
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return selected_window_;
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}
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WindowCaptureHelperWin* SelectedWindowContext::window_capture_helper() const {
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return window_capture_helper_;
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}
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} // namespace webrtc
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