Convert CGPoint from CGRect to other CGRect

Question

I have placed one label on view and view\'s frame is CGRectMake(0,0,270,203). Now I have to take screen shot of view with CGRectMake(0,0,800,600)

Answer 1

    +(UIImage*)screenShotOf:(UIView*)view atScale:(CGFloat)scale
    {
        UIGraphicsBeginImageContextWithOptions(view.bounds.size, view.opaque, scale);
        [view.layer renderInContext:UIGraphicsGetCurrentContext()];

        UIImage * img = UIGraphicsGetImageFromCurrentImageContext();

        UIGraphicsEndImageContext();

        return img;
    }

Here You need to adjust the scale property as you needed.

Answer 2

You could do something like this:

-(CGPoint) convertPoint: (CGPoint) point fromRect: (CGRect) fromRect toRect: (CGRect) toRect {
    return (CGPoint){
        (toRect.size.width/fromRect.size.width) * point.x,
        (toRect.size.height/fromRect.size.height) * point.y
    };
}