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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtDataVisualization module.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/
#include "qtouch3dinputhandler.h"
#include "q3dcamera.h"
QT_DATAVISUALIZATION_BEGIN_NAMESPACE
QTouch3DInputHandler::QTouch3DInputHandler(QObject *parent) :
Q3DInputHandler(parent)
{
}
QTouch3DInputHandler::~QTouch3DInputHandler()
{
}
// Input event listeners
void QTouch3DInputHandler::mouseDoubleClickEvent(QMouseEvent *event)
{
if (!scene()->isSlicingActivated()) {
setInputState( QDataVis::InputOnScene );
// update mouse positions to prevent jumping when releasing or repressing a button
setInputPosition( event->pos() );
}
}
void QTouch3DInputHandler::touchEvent(QTouchEvent *event)
{
QList<QTouchEvent::TouchPoint> points;
points = event->touchPoints();
if (!scene()->isSlicingActivated() && points.count() == 2) {
setInputState( QDataVis::InputOnPinch );
QPointF distance = points.at(0).pos() - points.at(1).pos();
int newDistance = distance.manhattanLength();
int zoomRate = 1;
int zoomLevel = scene()->camera()->zoomLevel();
if (zoomLevel > 100)
zoomRate = 5;
if (newDistance > prevDistance())
zoomLevel += zoomRate;
else
zoomLevel -= zoomRate;
if (zoomLevel > 500)
zoomLevel = 500;
else if (zoomLevel < 10)
zoomLevel = 10;
scene()->camera()->setZoomLevel(zoomLevel);
setPrevDistance(newDistance);
}
}
void QTouch3DInputHandler::mousePressEvent(QMouseEvent *event, const QPoint &mousePos)
{
// TODO: This code needs revisiting with new Qt releases and possibly move to using touch events for these as well.
if (Qt::LeftButton == event->button()) {
if (scene()->isSlicingActivated()) {
if (scene()->isInputInsideMainView(mousePos)) {
setInputState(QDataVis::InputOnOverview);
//qDebug() << "Mouse pressed on overview";
} else if (scene()->isInputInsideSliceView(mousePos)) {
setInputState(QDataVis::InputOnSlice);
//qDebug() << "Mouse pressed on zoom";
} else {
setInputState(QDataVis::InputNone);
}
} else {
setInputState(QDataVis::InputRotating);
// update mouse positions to prevent jumping when releasing or repressing a button
setInputPosition(mousePos);
//qDebug() << "Mouse pressed on scene";
}
} else if (Qt::MiddleButton == event->button()) {
// reset rotations
setInputPosition(QPoint(0, 0));
} else if (Qt::RightButton == event->button()) {
// disable rotating when in slice view
setInputState(QDataVis::InputOnScene);
// update mouse positions to prevent jumping when releasing or repressing a button
setInputPosition(mousePos);
}
}
QT_DATAVISUALIZATION_END_NAMESPACE
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