Getting text position while parsing pdf with Quartz 2D

Question

another question regarding pdf parsing... Just read PDF Reference version 1.7 \"5.3.1 Text-Positioning Operators\" and I am a little bit confused.

I wrote some code

Answer 1

@Koteg : Hi ! Have you finally managed to get it work ? For Tm, i'm able to get all the six values, but for now i can't see how to get the position of a word into a line ... I have an idea : if we are in Tj, just get the space between letters (hopping this the same everytime) and with Tm, get the position of a word. In the case of TJ, this is quite more complicated : get the value of horizontal translation to substract to Tm matrix for each part of the array, but searching a word in that array will be more complicated than for Tj.

BTW, for others people :

for(size_t n = 0; n < CGPDFArrayGetCount(array); n += 2)
{
    if(n >= CGPDFArrayGetCount(array))
        continue;

    CGPDFStringRef string;
    success = CGPDFArrayGetString(array, n, &string);
    if(success)
    {
        NSString *data = (NSString *)CGPDFStringCopyTextString(string);
        NSLog(@"array data : %@", data);

        [searcher.currentData appendFormat:@"%@", data];
        [data release];
    }

    CGPDFReal real;
    success = CGPDFArrayGetNumber(array, n+1, &real);
    if(success)
    {
        NSLog(@"array real : %f", real);
    }
}

Thanks