QML and Qt Quick

See this post: http://qt-project.org/forums/viewthread/42799/ Maybe there is more, but I stopped using 5.3 frustrated ^^

No all code; only the part where you use qAtan2. Anyway i suggest to use qDebug to print Input/Output parameters of qAtan2

Conclusion: Hello, I am implementing a TUIO API interface for multiple touch screen able to touch several touch screen simultaneously. It is working! 0./ I add a modiffication into: qapplication_p.h @public: //Add a filter to completely ignore touch event if they do not match the pressure value //only when touchEventPressurFilter>0 !! static qreal touchEventPressurFilter;@ and also into gui\kern@el\qapplication.cpp so the methode translateRawTouchEvent can ignore touch event based on a pressure value @//Add a filter to completely ignore touch event if they do not match the pressure value //only when touchEventPressurFilter>0 !! qreal QApplicationPrivate::touchEventPressurFilter = -1;@ @void QApplicationPrivate::translateRawTouchEvent(QWidget *window, QTouchEvent::DeviceType deviceType, const QListQTouchEvent::TouchPoint &touchPoints) { QApplicationPrivate *d = self; typedef QPair<Qt::TouchPointStates, QListQTouchEvent::TouchPoint > StatesAndTouchPoints; QHash<QWidget *, StatesAndTouchPoints> widgetsNeedingEvents; //TestTuio if(touchEventPressurFilter>=0) for (int i = 0; i < touchPoints.count(); ++i) { QTouchEvent::TouchPoint touchPoint = touchPoints.at(i); if(touchPoint.pressure()!=touchEventPressurFilter) { //qDebug()<< "Ignore WM_TOUCH Events: filter on pressure value: "<<touchPoint.pressure()<< touchEventPressurFilter; return; } }@ 1./ I have several instance of a class : @class SdcnTUIOApplicationViewer : public QDeclarativeView, TUIO::TuioListener@ 2./ Only one instance is listening the TUIO UDP frames All instance are child of a static global background widget, setparent() is called during initialisation: The filter/pressure value is also set once during initialisation of one of the ApplicationViewer instance @ //GlobalWidget use for multitouch if(globalWidget==NULL) { //globalWidget Must fill the virtual desktop globalWidget = new SdcnBackgroundWidget( 0, Qt::Tool|Qt::FramelessWindowHint ); //Set geometry instead of maximized ! ((QWidget*)globalWidget)->setGeometry(0,0,mGlobalVirtualScreenWidth,mGlobalVirtualScreenHeight); globalWidget->m_initialSize.setWidth( mGlobalVirtualScreenWidth ); globalWidget->m_initialSize.setHeight( mGlobalVirtualScreenHeight ); ((QWidget*)globalWidget)->setVisible(true); //Set the background color of the globalwidget ((QWidget*)globalWidget)->setStyleSheet("* { background-color: rgb(50, 50, 50); }"); this->setParent(globalWidget); //Main application : QApplicationPrivate *qAppPriv = QApplicationPrivate::instance(); //Set pressure filter value to ignore system nativ touch events qAppPriv->touchEventPressurFilter=TUIO_PRESSURE_VALUE; } else this->setParent(globalWidget);@ 3./ The translateRawTouchEvent methode is then alled on the top most widget of the application (even detached popup) @ //Main application : QApplicationPrivate *qAppPriv = QApplicationPrivate::instance(); //Get the topest widget, even Detached popup windows: QWidget* lToplevelWidget= QApplication::topLevelAt(QPoint(posInScreen.x(), posInScreen.y())); qAppPriv->translateRawTouchEvent(lToplevelWidget,QTouchEvent::TouchScreen,touchPointsList);@

Don't you need to add port to the rtsp source ?

second, that database name doesn't look correct. the only db driver that needs file path is sqlite. third, no user name.

What have you tried and doesn't work? We need more information. 'Doesn't work' is not helpful. If you have read the article, right at the end he showed a generic class extending QSqlQueryModel that is usable from QML. I tested it against Qt 5.2, and yes it does work. Granted, with little work as QAbstractItemModel::setRoleNames was deprecated, you have to reimplement QAbstractItemModel::roleNames instead, but that is 1 minute work.

Hi, They don't but Qt is big and the developer teams have only so many members. However, you can help getting the bug fixed by voting for it and make it known that it's still an issue in the latest version.

Then you should first get yourself familiar with c++ and Qt before rushing the port. Start by a small simple function and don't forget to add tests to ensure your code is working properly. On a side note, it's Qt, QT stands for Apple QuickTime

Thanks for your reply, going to try it :)

Nobody some hint? Can someone ackknowledge that TextInput in QQuickWidget QT5.3.0 RC is working?

Thanks. That's all very interesting, appreciate the info.

Hi, I looked into it but I could not really figure out how the animations are managed. Maybe anohter strategy would be to aim ata lower level in QT. Is there a way to set the maximum rendering frame rate? Which reduce the computation ressource?

Seems that the issues are fixed in qt 5.3 alpha/beta

Thank you I will take a look and try to figure it out. Thank you again.

I should also note that the window itself does show, and any components (such as a text area) I put in it will show as well, just not the menu bar. In case it makes a difference I'm on Ubuntu 14.04

Hi, Qt does not offer advanced mathematical functions. You have 3 options (from simplest to hardest): Interpolate your data in MATLAB before passing it to Qt Link your Qt project to a mathematical library like "GSL":http://www.gnu.org/software/gsl/ "Write your own interpolation functions":http://books.google.com/books?id=gwijz-OyIYEC&pg=PA36&dq=interpolation

That's exactly what I was looking for. I still don't understand why the binding is lost, but I'm really after the correct way of coding QML and using an alias is much simpler than what I was doing. In fact in my actual code I will create an alias to each top level item (i.e TextField and similar objects) and that way the user of the component can have access to anything they want. Thank you very much.