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[util] Fix --glyphs output with negative numbers

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This commit is contained in:
Behdad Esfahbod 2025-03-28 16:25:58 -06:00
parent cb44134cbf
commit ea08b04752
1 changed files with 12 additions and 9 deletions
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21
util/shape-options.hh
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@ -145,18 +145,21 @@ struct shape_options_t
/* Scale positions. */
int x_scale, y_scale;
hb_font_get_scale (font, &x_scale, &y_scale);
unsigned upem = hb_face_get_upem (hb_font_get_face (font));
signed upem = (int) hb_face_get_upem (hb_font_get_face (font));
unsigned count;
auto *positions = hb_buffer_get_glyph_positions (buffer, &count);
for (unsigned i = 0; i < count; i++)
if (x_scale != upem || y_scale != upem)
{
auto &pos = positions[i];
pos.x_offset = pos.x_offset * x_scale / upem;
pos.y_offset = pos.y_offset * y_scale / upem;
if (scale_advances)
auto *positions = hb_buffer_get_glyph_positions (buffer, &count);
for (unsigned i = 0; i < count; i++)
{
pos.x_advance = pos.x_advance * x_scale / upem;
pos.y_advance = pos.y_advance * y_scale / upem;
auto &pos = positions[i];
pos.x_offset = pos.x_offset * x_scale / upem;
pos.y_offset = pos.y_offset * y_scale / upem;
if (scale_advances)
{
pos.x_advance = pos.x_advance * x_scale / upem;
pos.y_advance = pos.y_advance * y_scale / upem;
}
}
}
}