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/*
* Copyright (c) 2019 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/win/selected_window_context.h"
namespace webrtc {
SelectedWindowContext::SelectedWindowContext(
HWND selected_window,
DesktopRect selected_window_rect,
WindowCaptureHelperWin* window_capture_helper)
: selected_window_(selected_window),
selected_window_rect_(selected_window_rect),
window_capture_helper_(window_capture_helper) {
selected_window_thread_id_ =
GetWindowThreadProcessId(selected_window, &selected_window_process_id_);
}
bool SelectedWindowContext::IsSelectedWindowValid() const {
return selected_window_thread_id_ != 0;
}
bool SelectedWindowContext::IsWindowOwnedBySelectedWindow(HWND hwnd) const {
// This check works for drop-down menus & dialog pop-up windows.
if (GetAncestor(hwnd, GA_ROOTOWNER) == selected_window_) {
return true;
}
// Assume that all other windows are unrelated to the selected window.
// This will cause some windows that are actually related to be missed,
// e.g. context menus and tool-tips, but avoids the risk of capturing
// unrelated windows. Using heuristics such as matching the thread and
// process Ids suffers from false-positives, e.g. in multi-document
// applications.
return false;
}
bool SelectedWindowContext::IsWindowOverlappingSelectedWindow(HWND hwnd) const {
return window_capture_helper_->AreWindowsOverlapping(hwnd, selected_window_,
selected_window_rect_);
}
HWND SelectedWindowContext::selected_window() const {
return selected_window_;
}
WindowCaptureHelperWin* SelectedWindowContext::window_capture_helper() const {
return window_capture_helper_;
}
} // namespace webrtc
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