diff options
Diffstat (limited to 'generator/pbmtext.c')
| -rw-r--r-- | generator/pbmtext.c | 36 |
1 files changed, 20 insertions, 16 deletions
diff --git a/generator/pbmtext.c b/generator/pbmtext.c index 357f0429..80fecdd5 100644 --- a/generator/pbmtext.c +++ b/generator/pbmtext.c @@ -538,22 +538,26 @@ insertCharacter(const struct glyph * const glyphP, Insert one character (whose glyph is 'glyph') into the image bits[]. Its top left corner shall be row 'toprow', column 'leftcol'. -----------------------------------------------------------------------------*/ - unsigned int glyph_y; /* Y position within the glyph */ - - if (leftcol + glyphP->x < 0 || - leftcol + glyphP->x + glyphP->width > cols || - toprow < 0 || - toprow + glyphP->height >rows ) - pm_error("internal error. Rendering out of bounds"); - - for (glyph_y = 0; glyph_y < glyphP->height; ++glyph_y) { - unsigned int glyph_x; /* position within the glyph */ - - for (glyph_x = 0; glyph_x < glyphP->width; ++glyph_x) { - if (glyphP->bmap[glyph_y * glyphP->width + glyph_x]) { - unsigned int const col = leftcol + glyphP->x + glyph_x; - bits[toprow+glyph_y][col/8] |= PBM_BLACK << (7-col%8); - } + if (glyphP->width == 0 && glyphP->height == 0) { + /* No bitmap data. Some BDF files code space this way */ + } else { + unsigned int glyph_y; /* Y position within the glyph */ + + if (leftcol + glyphP->x < 0 || + leftcol + glyphP->x + glyphP->width > cols || + toprow < 0 || + toprow + glyphP->height >rows ) + pm_error("internal error. Rendering out of bounds"); + + for (glyph_y = 0; glyph_y < glyphP->height; ++glyph_y) { + unsigned int glyph_x; /* position within the glyph */ + + for (glyph_x = 0; glyph_x < glyphP->width; ++glyph_x) { + if (glyphP->bmap[glyph_y * glyphP->width + glyph_x]) { + unsigned int const col = leftcol + glyphP->x + glyph_x; + bits[toprow+glyph_y][col/8] |= PBM_BLACK << (7-col%8); + } + } } } } |