Maybe CourierNewPS-BoldMT is not a monospaced font?
_murat
On Dec 10, 2010, at 11:39 AM, Phillip Mills wrote:
> I've been having one of those "I must be doing something stupid" days. The
> code I'm trying to write needs to pad one string with spaces so that certain
> characters line up visually with selected characters in a different string
> (within a view). It seemed like a relatively easy task as long as I could
> require the use of a monospaced font. However, it comes out looking various
> kinds of wrong depending on how many spaces I add. I've tried this with a
> number of Courier variants with the same result.
>
> The following test seems to confirm that a string of spaces does not render
> in the same bounding box as a string of alphanumeric characters or
> punctuation marks. (Also, that there may not be a neat and obvious formula
> for how to compensate.) Are these results reproducible? Was a fixed-size
> character width a bad assumption? Or is it a bug?
>
> - (void)debugFont {
> UIFont *font = [UIFont fontWithName:@"CourierNewPS-BoldMT" size:24];
>
> // With 22 characters, there's a width difference of 9
> NSString *s1 = @"1234567890123456789012";
> NSString *s2 = @" ";
>
> // The choice of non-space character doesn't seem to matter
> NSString *s5 = @"......................";
>
> // With 23 characters, there's a width difference of 10
> NSString *s3 = @"12345678901234567890123";
> NSString *s4 = @" ";
>
> NSLog(@"....@. size: %f", s1, [s1 sizeWithFont:font].width);
> NSLog(@"....@. size: %f", s2, [s2 sizeWithFont:font].width);
> NSLog(@"....@. size: %f", s5, [s5 sizeWithFont:font].width);
> NSLog(@"....@. size: %f", s3, [s3 sizeWithFont:font].width);
> NSLog(@"....@. size: %f", s4, [s4 sizeWithFont:font].width);
> }
>
> 2010-12-10 14:19:03.936 FontTest[1834:207] .1234567890123456789012. size:
> 317.000000
> 2010-12-10 14:19:03.937 FontTest[1834:207] . . size:
> 308.000000
> 2010-12-10 14:19:03.938 FontTest[1834:207] ........................ size:
> 317.000000
> 2010-12-10 14:19:03.938 FontTest[1834:207] .12345678901234567890123. size:
> 332.000000
> 2010-12-10 14:19:03.939 FontTest[1834:207] . . size:
> 322.000000
>
>
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