Using data from Bluetooth stream in QML code

[Infms]

I'm trying to use data received from a Bluetooth stream (coded in regular Qt C++) in my QML code (Qt Quick 3D), with the aim of using this data to rotate a 3D model. Is it possible to do this via bindings or similar? Thanks in advance.

[favoritas37]

Supposing that in your C++ you have a class that inherits from QObject:

This could be your class.

#if QT_VERSION > 0x040603
#include <qdeclarative.h>
#endif

class MyClass : public QObject
{
     Q_OBJECT
     Q_PROPERTY(float x READ getX WRITE setX NOTIFY onXChanged)
     Q_PROPERTY(float y READ getY WRITE setY NOTIFY onYChanged)
     Q_PROPERTY(float z READ getZ WRITE setZ NOTIFY onZChanged)

public:
     float getX();
     float getY();
     float getZ();

     void setX(float val){ x = val;}
     void setY(float val){ y = val;}
     void setZ(float val){ z = val;}

     static void registerQMLType()
     {
          qmlRegisterType<MyClass >("MyLibrary", 1, 0, "MyClass ");
     }
     //...the functions that will recieve data from bluetooth, set them to the local variables and every time 
     // any local variable changes you will emit the appropriate signal. Mandatory to achieve binding 

signals:
    void onXChanged(float val);
    void onYChanged(float val);
    void onZChanged(float val);

private:
     float x;
     float y; 
     float z;
};

In the main function before loading the qml file you will place the following code to register your C++ class to the QML:

MyClass::registerQMLType();

Then in the qml file you want to use it :

import Qt 4.7
import MyLibrary 1.0

Rectangle
{
   x:bluetoothReciever.x
   y:bluetoothReciever.y
   z:bluetoothReciever.z

   MyClass{
       id:bluetoothReciever
   }
}

This is a way to do what you want. Of course you need to add the bluetooth functions etc. but you get the idea.

[Infms]

This is exactly what I'm looking for, thanks favoritas!