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Gestures: inventor touch events and device

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DeepSOIC
2015-03-28 01:02:50 +03:00
committed by wmayer
parent a53940fcf6
commit 26fb298043
4 changed files with 308 additions and 0 deletions
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src/Gui/SoTouchEvents.cpp Normal file
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/***************************************************************************
* Copyright (c) Victor Titov (DeepSOIC) *
* (vv.titov@gmail.com) 2015 *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#include "SoTouchEvents.h"
#include <QApplication>
#include <QGestureEvent>
#include <Base/Exception.h>
SO_EVENT_SOURCE(SoGestureEvent);
SbBool SoGestureEvent::isSoGestureEvent(const SoEvent *ev) const
{
return ev->isOfType(SoGestureEvent::getClassTypeId());
}
//----------------------------SoGesturePanEvent--------------------------------
SO_EVENT_SOURCE(SoGesturePanEvent);
SoGesturePanEvent::SoGesturePanEvent(QPanGesture* qpan, QWidget *widget)
{
totalOffset = SbVec2f(qpan->offset().x(), -qpan->offset().y());
deltaOffset = SbVec2f(qpan->delta().x(), -qpan->delta().y());
state = SbGestureState(qpan->state());
Qt::KeyboardModifiers mods = QApplication::keyboardModifiers();
this->setAltDown(mods.testFlag(Qt::AltModifier));
this->setCtrlDown(mods.testFlag(Qt::ControlModifier));
this->setShiftDown(mods.testFlag(Qt::ShiftModifier));
this->setTime(SbTime::getTimeOfDay());
}
SbBool SoGesturePanEvent::isSoGesturePanEvent(const SoEvent *ev) const
{
return ev->isOfType(SoGesturePanEvent::getClassTypeId());
}
//----------------------------SoGesturePinchEvent--------------------------------
SO_EVENT_SOURCE(SoGesturePinchEvent);
SoGesturePinchEvent::SoGesturePinchEvent(QPinchGesture* qpinch, QWidget *widget)
{
int h = widget->height();
QPointF widgetCorner = QPointF(widget->mapToGlobal(QPoint(0,0)));
qreal scaleToWidget = (widget->mapFromGlobal(QPoint(800,800))-widget->mapFromGlobal(QPoint(0,0))).x()/800;
QPointF pnt;//temporary
pnt = qpinch->startCenterPoint();
pnt = (pnt-widgetCorner)*scaleToWidget;//translate screen coord. into widget coord.
startCenter = SbVec2f(pnt.x(), h - pnt.y());
pnt = qpinch->centerPoint();
pnt = (pnt-widgetCorner)*scaleToWidget;
curCenter = SbVec2f(pnt.x(), h - pnt.y());
pnt = qpinch->lastCenterPoint();
pnt = (pnt-widgetCorner)*scaleToWidget;
deltaCenter = curCenter - SbVec2f(pnt.x(), h - pnt.y());
deltaZoom = qpinch->scaleFactor();
totalZoom = qpinch->totalScaleFactor();
deltaAngle = qpinch->rotationAngle();
totalAngle = qpinch->totalRotationAngle();
state = SbGestureState(qpinch->state());
this->setPosition(SbVec2s(curCenter));
Qt::KeyboardModifiers mods = QApplication::keyboardModifiers();
this->setAltDown(mods.testFlag(Qt::AltModifier));
this->setCtrlDown(mods.testFlag(Qt::ControlModifier));
this->setShiftDown(mods.testFlag(Qt::ShiftModifier));
this->setTime(SbTime::getTimeOfDay());
}
SbBool SoGesturePinchEvent::isSoGesturePinchEvent(const SoEvent *ev) const
{
return ev->isOfType(SoGesturePinchEvent::getClassTypeId());
}
//----------------------------SoGestureSwipeEvent--------------------------------
SO_EVENT_SOURCE(SoGestureSwipeEvent);
SoGestureSwipeEvent::SoGestureSwipeEvent(QSwipeGesture *qwsipe, QWidget *widget)
{
angle = qwsipe->swipeAngle();
switch (qwsipe->verticalDirection()){
case QSwipeGesture::Up :
vertDir = +1;
break;
case QSwipeGesture::Down :
vertDir = -1;
break;
default:
vertDir = 0;
break;
}
switch (qwsipe->horizontalDirection()){
case QSwipeGesture::Right :
vertDir = +1;
break;
case QSwipeGesture::Left :
vertDir = -1;
break;
default:
vertDir = 0;
break;
}
state = SbGestureState(qwsipe->state());
Qt::KeyboardModifiers mods = QApplication::keyboardModifiers();
this->setAltDown(mods.testFlag(Qt::AltModifier));
this->setCtrlDown(mods.testFlag(Qt::ControlModifier));
this->setShiftDown(mods.testFlag(Qt::ShiftModifier));
this->setTime(SbTime::getTimeOfDay());
}
SbBool SoGestureSwipeEvent::isSoGestureSwipeEvent(const SoEvent *ev) const
{
return ev->isOfType(SoGestureSwipeEvent::getClassTypeId());
}
//----------------------------GesturesDevice-------------------------------
GesturesDevice::GesturesDevice(QWidget* widget)
{
if (SoGestureEvent::getClassTypeId().isBad()){
SoGestureEvent::initClass();
SoGesturePanEvent::initClass();
SoGesturePinchEvent::initClass();
SoGestureSwipeEvent::initClass();
}
if (! widget)
throw Base::Exception("Can't create a gestures quarter input device without widget (null pointer was passed).");
this->widget = widget;
}
const SoEvent* GesturesDevice::translateEvent(QEvent* event)
{
if (event->type() == QEvent::Gesture
|| event->type() == QEvent::GestureOverride) {
QGestureEvent* gevent = static_cast<QGestureEvent*>(event);
QPinchGesture* zg = static_cast<QPinchGesture*>(gevent->gesture(Qt::PinchGesture));
if(zg){
gevent->setAccepted(Qt::PinchGesture,true);//prefer it over pan
return new SoGesturePinchEvent(zg,this->widget);
}
QPanGesture* pg = static_cast<QPanGesture*>(gevent->gesture(Qt::PanGesture));
if(pg){
gevent->setAccepted(Qt::PanGesture,true);
return new SoGesturePanEvent(pg,this->widget);
}
QSwipeGesture* sg = static_cast<QSwipeGesture*>(gevent->gesture(Qt::SwipeGesture));
if(sg){
gevent->setAccepted(Qt::SwipeGesture,true);
return new SoGesturePanEvent(pg,this->widget);
}
}
return 0;
}