tdesktop/Telegram/SourceFiles/gui/twidget.h

59 lines
1.5 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014 John Preston, https://desktop.telegram.org
*/
#pragma once
class TWidget : public QWidget {
Q_OBJECT
public:
TWidget(QWidget *parent = 0) : QWidget(parent) {
}
TWidget *tparent() {
return dynamic_cast<TWidget*>(parentWidget());
}
const TWidget *tparent() const {
return dynamic_cast<const TWidget*>(parentWidget());
}
virtual void leaveToChildEvent(QEvent *e) { // e -- from enterEvent() of child TWidget
}
virtual void enterFromChildEvent(QEvent *e) { // e -- from leaveEvent() of child TWidget
}
bool event(QEvent *e) {
return QWidget::event(e);
}
protected:
void enterEvent(QEvent *e) {
TWidget *p(tparent());
if (p) p->leaveToChildEvent(e);
}
void leaveEvent(QEvent *e) {
TWidget *p(tparent());
if (p) p->enterFromChildEvent(e);
}
private:
};
QPixmap myGrab(QWidget *target, const QRect &rect);