sdrangel/sdrgui/gui/tabletapandhold.cpp

57 wiersze
2.6 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2022 Jon Beniston, M7RCE //
// //
// This program 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 as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <QTableWidget>
#include <QHeaderView>
#include <QGestureEvent>
#include <QGesture>
#include <QTapAndHoldGesture>
#include "tabletapandhold.h"
TableTapAndHold::TableTapAndHold(QTableWidget *table) :
QObject(table),
m_table(table)
{
m_table->installEventFilter(this);
m_table->grabGesture(Qt::TapAndHoldGesture);
};
bool TableTapAndHold::eventFilter(QObject *obj, QEvent *event)
{
if (event->type() == QEvent::Gesture)
{
QGestureEvent *gestureEvent = static_cast<QGestureEvent *>(event);
if (QTapAndHoldGesture *tapAndHoldGesture = static_cast<QTapAndHoldGesture *>(gestureEvent->gesture(Qt::TapAndHoldGesture)))
{
// Map from global position to item position
QPoint point = m_table->mapFromGlobal(tapAndHoldGesture->position().toPoint());
QHeaderView *hHeader = m_table->horizontalHeader();
QHeaderView *vHeader = m_table->verticalHeader();
if (hHeader) {
point.setY(point.y() - hHeader->height());
}
if (vHeader) {
point.setX(point.x() - vHeader->width());
}
emit tapAndHold(point);
return true;
}
}
return QObject::eventFilter(obj, event);
}