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Thread: Saving the widget class as a QPixmap

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    Default Saving the widget class as a QPixmap

    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
    Last edited by zgulser; 30th January 2009 at 19:46.

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    Default Re: Saving the widget class as a QPixmap


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    Default Re: Saving the widget class as a QPixmap

    Hi again,

    Is there any idea?

    Regards

  4. #4
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    Default Re: Saving the widget class as a QPixmap

    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

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    Default Re: Saving the widget class as a QPixmap

    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

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    Default Re: Saving the widget class as a QPixmap

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

    Qt Code:
    1. QPixmap myPixmap(600,400);
    2. myPixmap.fill(Qt::white); // unless you want transparent background
    3. QPainter p(&myPixmap);
    4. myScene->render(&p);
    5. p.end();
    To copy to clipboard, switch view to plain text mode 

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    Default Re: Saving the widget class as a QPixmap

    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
    Last edited by zgulser; 30th January 2009 at 22:47.

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    Default Re: Saving the widget class as a QPixmap

    Quote Originally Posted by zgulser View Post
    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.

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    Default Re: Saving the widget class as a QPixmap

    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

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    Default Re: Saving the widget class as a QPixmap

    So make the pixmap bigger.

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    Default Re: Saving the widget class as a QPixmap

    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

  12. #12
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    Default Re: Saving the widget class as a QPixmap

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

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