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sdrangel/sdrgui/gui/tabletapandhold.cpp

64 lines
3.0 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// Copyright (C) 2015-2019 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// Copyright (C) 2021-2023 Jon Beniston, M7RCE <jon@beniston.com> //
// //
// 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());
}
QSize size = m_table->viewport()->size();
if ((point.x() >= 0) && (point.x() < size.width()) && (point.y() >= 0) && (point.y() < size.height()))
{
emit tapAndHold(point);
return true;
}
}
}
return QObject::eventFilter(obj, event);
}