diff options
Diffstat (limited to 'src/w32term.c')
| -rw-r--r-- | src/w32term.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/src/w32term.c b/src/w32term.c index 944c0f9fa43..a40fe2edc48 100644 --- a/src/w32term.c +++ b/src/w32term.c @@ -1763,9 +1763,35 @@ static void w32_compute_glyph_string_overhangs (s) struct glyph_string *s; { + if (s->cmp == NULL + && s->first_glyph->type == CHAR_GLYPH) + { +#ifdef USE_FONT_BACKEND + if (enable_font_backend) + { + unsigned *code = alloca (sizeof (unsigned) * s->nchars); + struct font *font = (struct font *) s->font_info; + struct font_metrics metrics; + int i; + + for (i = 0; i < s->nchars; i++) + code[i] = s->char2b[i]; + font->driver->text_extents (font, code, s->nchars, &metrics); + s->right_overhang = (metrics.rbearing > metrics.width + ? metrics.rbearing - metrics.width : 0); + s->left_overhang = metrics.lbearing < 0 ? -metrics.lbearing : 0; + } +#else /* TODO: Windows does not appear to have a method for getting this info without getting the ABC widths for each individual character and working it out manually. */ +#endif + } + else if (s->cmp) + { + s->right_overhang = s->cmp->rbearing - s->cmp->pixel_width; + s->left_overhang = -s->cmp->lbearing; + } } @@ -6892,7 +6918,7 @@ static struct redisplay_interface w32_redisplay_interface = w32_destroy_fringe_bitmap, w32_per_char_metric, w32_encode_char, - NULL, /* w32_compute_glyph_string_overhangs */ + w32_compute_glyph_string_overhangs, x_draw_glyph_string, w32_define_frame_cursor, w32_clear_frame_area, |