Paint Event and Zoomed In Image Problem

[Nalu323]

Hi, I'm working on a project where I have to do an image editor similar to Paint. I would like to open up an image, zoom in/zoom out if necessary, and then draw on it. For that, I used Image Viewer and Scribble examples, and created a QLabel subclass that is supposed to draw lines and other forms with the mouse button.
The problem is, when I open my image, I'm able to zoom on it normally:

But when I want to draw something it resizes the image to it's original size, but keeps labels zommed in's size:

I believe that it has something to do with the overriden paintEvent that I use to draw, here's it's code:

void imLabel::paintEvent(QPaintEvent *event){
    if(tipo != ""){ //draw mode
        QPainter painter(this);
        QRect dirtyRect = event->rect();
        painter.drawImage(dirtyRect,image,dirtyRect);

    }
    else QLabel::paintEvent(event);
}

Is there a way that I can keep the image zoomed in while I draw, just like in Paint?

[mrjj]

Hi
How do you zoom it, in the first place ?
If its just by making label bigger, then maybe

(still in paintEvent)

 if(tipo != ""){ //draw mode
        QPainter painter(this);
        QRect fullRect = rect(); // use rect of label
        painter.drawImage(dirtyRect,image,fullRect );
    }

[Nalu323]

@mrjj Hi, yes I zoom in/out by making the label bigger, just like in Image Viewer example, and because if I zoom in/out the image directly, it loses quality.

[Nalu323]

@mrjj I tried your code, here's the result: