Date: Wed, 09 Jun 2004 00:31:21 -0400
From: tj <999alfred@comcast.net>
Subject: Re: [nanogui] GrGetFontInfo returns wrong maxwidth

Here is the font.

Also some code and output:
 With this code:
  courR12 = GrCreateFont 
("/usr/X11/lib/fonts/75dpi/courR12-ISO8859-1.pcf.gz",
              15,NULL);
  GrGetFontInfo(courR12, &courR12_info);

  printf("Font maxwidth = %d.\n", courR12_info.maxwidth);
  printf("Font height =  %d.\n", courR12_info.height);
  printf("Font baseline =  %d.\n", courR12_info.baseline);

Results with an ouput of:
Font maxwidth = 7.
Font height =  14.
Font baseline =  11.

Notice maxwidth of a very narrow 7.

I even tried :
  courR12 = GrCreateFont 
("/usr/X11/lib/fonts/75dpi/courR12-ISO8859-1.pcf.gz",
              15,NULL);
  // GrGetFontInfo(courR12, &courR12_info);

  gc = GrNewGC();
  GrSetGCFont (gc, courR12);
    GrGetGCTextSize (gc , "W",
           1,
           0,&courR12_info.maxwidth,
           &courR12_info.height,
           &courR12_info.baseline);
    GrDestroyGC(gc);
  printf("Font maxwidth = %d.\n", courR12_info.maxwidth);
  printf("Font height =  %d.\n", courR12_info.height);
  printf("Font baseline =  %d.\n", courR12_info.baseline);

Results on output:

Font maxwidth = 7.
Font height =  14.
Font baseline =  11.

The same thing, 7. But the 'W' is longer.

Greg Haerr wrote:

>Well TJ, you're doing good, finding bugs and issues everywhere!
>
>Can you send me courR12-ISO8859-1.pcf.gz so I've got it on
>file?  I'll take a quick look at what the issue is, right after I put
>back together my Linux dev system (and mwin cvs) that crashed
>hard and lost damn near everything... (there should be some
>dprintf code in engine/font_pcf.c that shows the max width.
>If you have the bdf source for the font, sometimes I've found that
>the font is coded incorrectly, and it's not actually a Microwindows
>problem)
>
>Regards,
>
>Greg
>
>
>: When I use GrGetFontInfo()  it returns maxwidth smaller then the 'W' 
>: character. So, Wnen I use maxwidth as the x width in the blanking 
>: GrFillRect() to blank a single char area, it leaves the right portion of 
>: the'W' on the screen.
>: 
>: Using courR12-ISO8859-1.pcf.gz as the font file.
>: 
>: Even tried writing a ' ' with GrText() over it still leaves the right 
>: portion of the 'W'.
>: 
>: tj
>: 
>: 
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filename="courR12-ISO8859-9.pcf.gz"