103 lines
2.8 KiB
C++
Executable File
103 lines
2.8 KiB
C++
Executable File
/**
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* @RDE_HEADER@
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* Declaration/Definition
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* $Id$
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* $HeadURL$
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* $Author$
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*/
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#include "gestures.h"
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#include <QtCore/QDebug>
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#include <QtCore/QEvent>
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#include <QtWidgets/QWidget>
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namespace SituationMap { namespace RB {
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// TabGestureRecognizer
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ApplyGestureRecognizer::ApplyGestureRecognizer() : QGestureRecognizer()
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{
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}
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ApplyGestureRecognizer::~ApplyGestureRecognizer()
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{}
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QGesture * ApplyGestureRecognizer::create( QObject * target )
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{
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qDebug() << "ApplyGesture create";
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if (target && target->isWidgetType())
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{
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((QWidget*)target)->setAttribute(Qt::WA_AcceptTouchEvents);
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}
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return new ApplyGesture();
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} // TabGestureRecognizer::create
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QGestureRecognizer::Result ApplyGestureRecognizer::recognize( QGesture * state, QObject* , QEvent * event)
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{
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ApplyGesture * q = static_cast<ApplyGesture*>(state);
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const QTouchEvent * ev = static_cast<const QTouchEvent*>(event);
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QGestureRecognizer::Result result = QGestureRecognizer::CancelGesture;
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switch (event->type())
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{
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case QEvent::TouchBegin:
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{
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qDebug() << "ApplyGesture begin";
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q->_position = ev->touchPoints().at(0).pos();
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q->setHotSpot(ev->touchPoints().at(0).screenPos());
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q->_tripleTouch = (ev->touchPoints().size() == 3);
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result = QGestureRecognizer::TriggerGesture;
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} break;
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case QEvent::TouchUpdate:
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case QEvent::TouchEnd:
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{
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if (q->state() != Qt::NoGesture && ev->touchPoints().size() >= 1 && ev->touchPoints().size() <= 3)
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{
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if (ev->touchPoints().size() == 3) q->_tripleTouch = true;
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qDebug() << "ApplyGesture update _tripleTouch=" << q->_tripleTouch;
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QTouchEvent::TouchPoint p = ev->touchPoints().at(0);
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QPoint delta = p.pos().toPoint() - p.startPos().toPoint();
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enum { TapRadius = 40 };
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if (delta.manhattanLength() <= TapRadius)
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{
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if (event->type() == QEvent::TouchEnd)
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{
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result = (q->_tripleTouch) ? QGestureRecognizer::FinishGesture : QGestureRecognizer::CancelGesture;
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}
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else result = QGestureRecognizer::TriggerGesture;
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}
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}
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} break;
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case QEvent::MouseButtonPress:
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case QEvent::MouseMove:
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case QEvent::MouseButtonRelease:
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result = QGestureRecognizer::Ignore;
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break;
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default:
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result = QGestureRecognizer::Ignore;
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break;
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}
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return result;
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} // TabGestureRecognizer::recognize( QGesture * state, QObject * watched, QEvent * event)
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void ApplyGestureRecognizer::reset( QGesture * state )
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{
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ApplyGesture * q = static_cast<ApplyGesture*>(state);
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q->_tripleTouch = false;
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} // TabGestureRecognizer::reset( QGesture * gesture )
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}} // namspaces
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