lib_ui/ui/delayed_activation.cpp
2022-09-19 12:39:22 +04:00

103 lines
2.3 KiB
C++

// This file is part of Desktop App Toolkit,
// a set of libraries for developing nice desktop applications.
//
// For license and copyright information please follow this link:
// https://github.com/desktop-app/legal/blob/master/LEGAL
//
#include "ui/delayed_activation.h"
#include "ui/ui_utility.h"
#include "base/call_delayed.h"
#include "base/invoke_queued.h"
#include "base/platform/base_platform_info.h"
#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
#include "base/platform/linux/base_linux_xcb_utilities.h"
#endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
#include <QtCore/QPointer>
#include <QtWidgets/QApplication>
namespace Ui {
namespace {
constexpr auto kPreventTimeout = crl::time(100);
bool Paused/* = false*/;
bool Attempted/* = false*/;
auto Window = QPointer<QWidget>();
bool Unpause(bool force = false) {
if (force || Attempted) {
Attempted = false;
Paused = false;
return true;
}
return false;
}
} // namespace
void ActivateWindowDelayed(not_null<QWidget*> widget) {
if (Paused) {
Attempted = true;
return;
} else if (std::exchange(Window, widget.get())) {
return;
}
#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
const auto focusAncestor = [&] {
const auto focusWidget = QApplication::focusWidget();
if (!focusWidget || !widget->window()) {
return false;
}
return widget->window()->isAncestorOf(focusWidget);
}();
#endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
crl::on_main(Window, [=] {
const auto widget = base::take(Window);
if (!widget) {
return;
}
const auto window = widget->window();
if (!window || window->isHidden()) {
return;
}
window->raise();
window->activateWindow();
#ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
if (::Platform::IsX11() && focusAncestor) {
xcb_set_input_focus(
base::Platform::XCB::GetConnectionFromQt(),
XCB_INPUT_FOCUS_PARENT,
window->winId(),
XCB_CURRENT_TIME);
}
#endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
});
}
void PreventDelayedActivation() {
Window = nullptr;
Paused = true;
PostponeCall([] {
if (Unpause()) {
return;
}
InvokeQueued(qApp, [] {
if (Unpause()) {
return;
}
crl::on_main([] {
if (Unpause()) {
return;
}
base::call_delayed(kPreventTimeout, [] {
Unpause(true);
});
});
});
});
}
} // namespace Ui