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Resize Image Frame

Get the image frame size as per the image size ratio :


-(CGRect)imagePosition:(int)imgWidth forImageHeight:(int)imgHeight maxFrame:(CGRect) rect
{
float xPos=rect.origin.x, yPos=rect.origin.y;
int maxWidth=rect.size.width;
int maxHeight=rect.size.height;
float imgCWidth=imgWidth;
float imgCHeight=imgHeight;
float ratio=0;
if(imgCHeight>0)
ratio=(float)imgCHeight/(float)imgCWidth;
if(imgCWidth>imgCHeight)
{
if(imgCWidth>maxWidth)
{
imgCWidth=maxWidth;
imgCHeight=imgCWidth*ratio;
}
if(imgCHeight>maxHeight)
{
imgCHeight=maxHeight;
imgCWidth=imgCHeight/ratio;
}
}
else
{
if(imgCHeight>maxHeight)
{
imgCHeight=maxHeight;
imgCWidth=imgCHeight/ratio;
}
if(imgCWidth>maxWidth)
{
imgCWidth=maxWidth;
imgCHeight=imgCWidth*ratio;
}
}
maxWidth=imgCWidth;
maxHeight=imgCHeight;
if(imgCWidth<=imgWidth && imgCHeight<=imgHeight)
{
imgWidth=imgCWidth;
imgHeight=imgCHeight;
}
int oMaxWidth=rect.size.width;
int oMaxHeight=rect.size.height;
xPos+=(oMaxWidth-imgWidth)/2;
if(imgHeight>oMaxHeight)
{
yPos+=(oMaxHeight-imgHeight)/2;
}
else
{
yPos+=(oMaxHeight-imgHeight)/2;
}
return CGRectMake(xPos,yPos,imgWidth,imgHeight);
}
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Comments

  1. Urmil SetiaMay 23, 2012 at 1:38 AM

    Get Thumbnail of PDF

    - (UIImage *)imageFromPDFWithDocumentRef:(NSString*)pFilePath
    {
    NSURL *urlpdf = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:pFilePath ofType:@"pdf"]];
    CGPDFDocumentRef thePdf = CGPDFDocumentCreateWithURL((CFURLRef)urlpdf);
    CGPDFPageRef pageRef = CGPDFDocumentGetPage(thePdf, 1);
    CGRect pageRect = CGPDFPageGetBoxRect(pageRef, kCGPDFCropBox);

    UIGraphicsBeginImageContext(pageRect.size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextTranslateCTM(context, CGRectGetMinX(pageRect),CGRectGetMaxY(pageRect));
    CGContextScaleCTM(context, 1, -1);
    CGContextTranslateCTM(context, -(pageRect.origin.x), -(pageRect.origin.y));
    CGContextDrawPDFPage(context, pageRef);

    UIImage *finalImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    CGPDFDocumentRelease(thePdf);
    CGFloat theOffset = 0.0;
    //Resize Image
    CGImageRef imageRef = CGImageCreateWithImageInRect([finalImage CGImage], CGRectMake(theOffset, theOffset, 200.0-theOffset*2.0, 176.0-theOffset*2.0));
    UIImage *finalcroppedImage = [UIImage imageWithCGImage:imageRef];
    CGImageRelease(imageRef);

    return finalcroppedImage;
    }

    ReplyDelete
  2. Amit SharmaMay 23, 2012 at 11:10 PM

    Thanks Urmil..

    ReplyDelete

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