[Solved] SetContextProperty();

spode

@ #include "funzioni.h"
#include <QDeclarativeContext>
#include <QUrl>
#include <QObject>
#include <QGraphicsObject>
#include <QDirectPainter>

Funzioni::Funzioni()
{
view.setWindowFlags(Qt::FramelessWindowHint);
view.rootContext()->setContextProperty("funzioni", this);
view.setSource(QUrl::fromLocalFile("qml/LebendigeLieder/main.qml"));

#if defined(Q_WS_SIMULATOR) || defined(Q_OS_SYMBIAN)
view.setAttribute(Qt::WA_LockPortraitOrientation);
view.showFullScreen();
#else
view.show();
#endif
}

int Funzioni::getHeight()
{
return QDirectPainter::screenHeight();
}

int Funzioni::getWidth()
{
return QDirectPainter::screenWidth();
}
@

what must i use instead of this "view.rootContext()->setContextProperty("funzioni", this);"? instead of "this"...

lgeyer

Does Funzioni derive from QObject? If not, it has to.

DenisKormalev

Can you say what error do you have?

spode

@ #include "funzioni.h"
#include <QDirectPainter>
#include <QDeclarativeContext>
#include <QGraphicsObject>

Funzioni::Funzioni(QObject *parent) :
QObject(parent)
{
QDeclarativeView view;
view.setWindowFlags(Qt::FramelessWindowHint);
view.rootContext()->setContextProperty("funzioni", this);
view.setSource(QUrl::fromLocalFile("qml/LebendigeLieder/main.qml"));

#if defined(Q_WS_SIMULATOR) || defined(Q_OS_SYMBIAN)
view.setAttribute(Qt::WA_LockPortraitOrientation);
view.showFullScreen();
#else
view.show();
#endif
}

int Funzioni::getHeight()
{
return QDirectPainter::screenHeight();
}

int Funzioni::getWidth()
{
return QDirectPainter::screenWidth();
}
@
0k, now errors are:
"error: undefined reference to _imp___ZN14QDirectPainter12screenHeightEv'" "error: undefined reference to_imp___ZN14QDirectPainter11screenWidthEv'"

lgeyer

Do you develop for embedded linux? Otherwise the QDirectPainter class won't be available to you (and the linker complains about that). If yes, re-run qmake.

spode

i am using windows 7. i used @ int Funzioni::getHeight()
{
QDesktopWidget *v = QApplication::desktop();
return v->height();
}

int Funzioni::getWidth()
{
QDesktopWidget *c = QApplication::desktop();
return c->width();
}
@
but errors are: "TypeError: Result of expression 'funzioni.getHeight' [undefined] is not a function." if i call methods by qml:
@
import QtQuick 1.0

Item
{
id: contenitore
width: funzioni.getWidth();
height: funzioni.getHeight();

Image
{
    source: "../LebendigeLieder/sfondo.jpg"
    anchors.top: contenitore.top
    anchors.left: contenitore.left
    id: sfondo
    z: -1
}

Rectangle
{
    color:"red"
    width: 130; height: 30
    anchors.top: contenitore.top; anchors.right: contenitore.right
    radius: 10
}

}
@

lgeyer

Methods called from QML have to be either declared as slots or as "Q_INVOKABLE":http://doc.qt.nokia.com/4.7/qobject.html#Q_INVOKABLE.

What do you want to achieve? Display your application fullscreen?
Just use "QDeclarativeView::setResizeMode(Qt::SizeRootObjectToView)":http://doc.qt.nokia.com/4.7-snapshot/qdeclarativeview.html#resizeMode-prop.

ZapB

Are those functions slots or marked as Q_INVOKABLE?

spode

basically, my issue is that i would a fullscreen application, but the root conteiner is so small that it cannot contain the rettangle. in fact, it is viewed as white rettangle which fills the width and the total height of the screen... i noted the general container is too small seing the QML designer...

spode

solved with simple code:
@ import QtQuick 1.0

Rectangle {
color: "orange"
id: container

Rectangle
{
    id: indicatore
    anchors.right: container.right
    width: 130; height: 60

}

}
@
and
@
#include <QtGui/QApplication>
#include "qmlapplicationviewer.h"

int main(int argc, char *argv[])
{
QApplication app(argc, argv);

QmlApplicationViewer viewer;
viewer.setOrientation(QmlApplicationViewer::ScreenOrientationLockPortrait);
viewer.setWindowFlags(Qt::FramelessWindowHint);
viewer.setMainQmlFile&#40;QLatin1String("qml/LebendigeLieder/main.qml"&#41;);
viewer.showExpanded();

return app.exec();

}
@

lgeyer

Be aware that if you are using QDeclarativeView::showFullscreen() you will need to set the geometry manually, otherwise your view won't show up. In addition, the order is important:

set the source
set the resize mode
set the geometry
show

@
int main(int argc, char* argv[])
{
QApplication application(argc, argv);
QDeclarativeView view(QUrl("main.qml"));

view.setResizeMode(QDeclarativeView::SizeRootObjectToView);
view.setGeometry(application.desktop()->screenGeometry());
view.showFullScreen();

return(application.exec(&#41;&#41;;

}
@
@
Rectangle {
color: "green"
}
@

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[Solved] SetContextProperty();