tdesktop/Telegram/SourceFiles/ui/inactive_press.cpp
2019-10-01 23:59:46 +03:00

54 lines
1.2 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "ui/inactive_press.h"
#include "base/timer.h"
#include "base/qt_connection.h"
#include <QtCore/QPointer>
namespace Ui {
namespace {
constexpr auto kInactivePressTimeout = crl::time(200);
struct InactivePressedWidget {
QWidget *widget = nullptr;
base::qt_connection connection;
base::Timer timer;
};
std::unique_ptr<InactivePressedWidget> Tracker;
} // namespace
void MarkInactivePress(not_null<QWidget*> widget, bool was) {
if (!was) {
if (WasInactivePress(widget)) {
Tracker = nullptr;
}
return;
}
Tracker = std::make_unique<InactivePressedWidget>();
Tracker->widget = widget;
Tracker->connection = QObject::connect(widget, &QWidget::destroyed, [=] {
Tracker->connection.release();
Tracker = nullptr;
});
Tracker->timer.setCallback([=] {
Tracker = nullptr;
});
Tracker->timer.callOnce(kInactivePressTimeout);
}
[[nodiscard]] bool WasInactivePress(not_null<QWidget*> widget) {
return Tracker && (Tracker->widget == widget);
}
} // namespace Ui