Saving the widget class as a QPixmap

[zgulser]

Hi,

I have a class foo in which I created two QGraphicsLineItem and one QGraphicsEllipseItem. Together they form a different composite shape in foo. What I want to do is saving this shape as a QPixmap! OR transfering this whole shape into a QPixmap. Is it possible it QT?

Regards

[wysota]

QGraphicsScene::render()

[zgulser]

Hi again,

Is there any idea?

Regards

[zgulser]

Hi,

I don't want to render. I guess I mistold my problem.

I want to convert my class, which I draw s shape in it, into a QPixmap OR,
to put my shape into a QPixmap.

Is that what you understood?

Regards

[zgulser]

Oh sorry, I just understood what did you say.


Hımm does it work for QPainter painter(&QPixmap_object) ?

OR grabWidget could do the same thing?

Regards

[wysota]

Oh boy... is it so hard to read 2-3 paragraphs of the documentation?


QPixmap myPixmap(600,400);
myPixmap.fill(Qt::white); // unless you want transparent background
QPainter p(&myPixmap);
myScene->render(&p);
p.end();

[zgulser]

Hi,

Yes yes, I sad I'am sorry, I didn't recognize what's written there for a moment cuz I'am really overloaded. Sorry again.

One more; scene.render(&p) makes the scene a QPixmap? cuz, it's return type is void.

By the way, what do you say about grabWidget?

Regards

[wysota]

One more; scene.render(&p) makes the scene a QPixmap? cuz, it's return type is void.
Think why it takes a pointer to the painter object and what it might do with it.


By the way, what do you say about grabWidget?

I say it is not for you because it would contain not only the contents of the view but also the frame of the view. Please use QScene::render() as suggested.

[zgulser]

Hi,

I converted my widget to QPixmap by following the instructions that you provided, but now the widget did not fit with the QPixmap. I mean only some part of the widget can be seen on the pixmap.


Regards

[wysota]

So make the pixmap bigger.

[zgulser]

Yes, I did and it works OK.

I checked but didn't find how to put my widget at the middle of the pixmap. I mean I want to control the coordinates of my pixmap. By biggering the pixmap, I couldn't get the true sense of such controling since the most of the pixmap field is empty.

Thanks again wysota

Regards

[wysota]

Have you tried actually reading the documentation of classes and methods before using them? Have you seen the docs of QGraphicsScene::render()?