UIGraphicsBeginImageContext with parameters

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忘了有多久
忘了有多久 2021-02-19 19:06

I am taking a screenshot in my application. I am able to take the screenshot.

Now I want to take the screenshot by specifying the x and y coordinate. Is that possible?

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  •  太阳男子
    2021-02-19 19:20

    UIGraphicsBeginImageContext(self.view.bounds.size);
    CGContextRef c = UIGraphicsGetCurrentContext();
    CGContextTranslateCTM(c, 0, -40);    // <-- shift everything up by 40px when drawing.
    [self.view.layer renderInContext:c];
    UIImage* viewImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    

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