[Freetype] Buggy metrics with FreeType 2 and BDF or PCF fonts?

[Juliusz Chroboczek]

Hi,

I'm attaching a little test program that you should run on 8x13.bdf
and 8x13.pcf.  Please notice the (x, y) couple printed for every
glyph, which are, respectively,

  face->glyph->metrics.horiBearingX and
  face->glyph->metrics.horiBearingY.

The 8x13 font has a bounding box of (0, -2) through (8, 11).  Thus, I
believe that the correct values should be (0, 704).  However, I'm
getting

  (0, -128) for the BDF version; and
  (512, 704) for PCF version.

Can anyone confirm this bug, or tell me what I'm doing wrong?

Thanks,

                                        Juliusz

----------------------------------------------------------------------
#include <stdlib.h>
#include <stdio.h>

#include "freetype/freetype.h"

FT_Library ft_library;

int
main(int argc, char **argv)
{
    int rc, index, code, x, y;
    FT_Face face;

    if(argc != 2)
        exit(1);

    rc = FT_Init_FreeType(&ft_library);
    if(rc != 0) {
        fprintf(stderr, "Couldn't init library: %d.\n", rc);
        return 1;
    }

    rc = FT_New_Face(ft_library, argv[1], 0, &face);
    if(rc != 0) {
        fprintf(stderr, "Couldn't make new face: %d.\n", rc);
        return 1;
    }

    rc = FT_Set_Pixel_Sizes(face, 13, 13);
    if(rc != 0) {
        fprintf(stderr, "Couldn't select size: %d.\n", rc);
        return 1;
    }

    rc = FT_Select_Charmap(face, ft_encoding_unicode);
    if(rc != 0) {
        fprintf(stderr, "Couldn't select charmap: %d.\n", rc);
        return 1;
    }

    for(code = 0; code < 0xFFFF; code++) {
        index = FT_Get_Char_Index(face, code);
        if(code != 0 && index <= 0)
            continue;

        rc = FT_Load_Glyph(face, index,
                           FT_LOAD_RENDER | FT_LOAD_MONOCHROME);
        if(rc != 0) {
            printf("Couldn't load glyph %d(%d): %d.\n\n",
                   code, index, rc);
            continue;
        }

        printf("%d(%d): %d x %d (%d, %d)\n",
               code, index,
               face->glyph->bitmap.width, face->glyph->bitmap.rows,
               face->glyph->metrics.horiBearingX,
               face->glyph->metrics.horiBearingY);
        for(y = 0; y < face->glyph->bitmap.rows; y++) {
            for(x = 0; x < face->glyph->bitmap.width; x++) {
                if((face->glyph->bitmap.buffer[y * face->glyph->bitmap.pitch + 
                                               x / 8] &
                    1 << (7 - x % 8)) != 0)
                    printf("*");
                else
                    printf(" ");
            }
            printf("\n");
        }
        printf("\n");
    }
    return 0;
}