Ciechan / BCMeshTransformView

Mesh transforms for UIView
MIT License
1.24k stars 126 forks source link

Take an screenshot #16

Closed NES8 closed 9 years ago

NES8 commented 9 years ago

Hi,

I'm trying to take an screenshot of all the screen, but the view BCMeshTransformView class disappears.

I have tried to implement some possible solutions, but don't work for me: http://stackoverflow.com/questions/11299682/programmatically-take-a-screenshot-combining-opengl-and-uikit-elements http://stackoverflow.com/questions/10578389/iphone-screenshot-of-multiple-opengl-caeaglelayer-views http://stackoverflow.com/questions/12564658/issue-with-renderincontext-with-opengl-views/15777434#15777434

Can you help me?

Thank you.

KittenYang commented 9 years ago

Try this to snapshot:

- (UIImage *)screenshot
{
    CGSize imageSize = CGSizeZero;

    UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
    if (UIInterfaceOrientationIsPortrait(orientation)) {
        imageSize = [UIScreen mainScreen].bounds.size;
    } else {
        imageSize = CGSizeMake([UIScreen mainScreen].bounds.size.height, [UIScreen mainScreen].bounds.size.width);
    }

    UIGraphicsBeginImageContextWithOptions(imageSize, NO, 0);
    CGContextRef context = UIGraphicsGetCurrentContext();
    for (UIWindow *window in [[UIApplication sharedApplication] windows]) {
        CGContextSaveGState(context);
        CGContextTranslateCTM(context, window.center.x, window.center.y);
        CGContextConcatCTM(context, window.transform);
        CGContextTranslateCTM(context, -window.bounds.size.width * window.layer.anchorPoint.x, -window.bounds.size.height * window.layer.anchorPoint.y);
        if (orientation == UIInterfaceOrientationLandscapeLeft) {
            CGContextRotateCTM(context, M_PI_2);
            CGContextTranslateCTM(context, 0, -imageSize.width);
        } else if (orientation == UIInterfaceOrientationLandscapeRight) {
            CGContextRotateCTM(context, -M_PI_2);
            CGContextTranslateCTM(context, -imageSize.height, 0);
        } else if (orientation == UIInterfaceOrientationPortraitUpsideDown) {
            CGContextRotateCTM(context, M_PI);
            CGContextTranslateCTM(context, -imageSize.width, -imageSize.height);
        }
        if ([window respondsToSelector:@selector(drawViewHierarchyInRect:afterScreenUpdates:)]) {
            [window drawViewHierarchyInRect:window.bounds afterScreenUpdates:YES];
        } else {
            [window.layer renderInContext:context];
        }
        CGContextRestoreGState(context);
    }

    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image;
}
NES8 commented 9 years ago

I can not believe!!! It works :)

If you tell me your paypal account, I will send a little money.