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Properly handle phantom points for variation fonts (#56601).

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* src/truetype/ttgload.c (TT_Process_Simple_Glyph): Scale phantom
points if HVAR and/or VVAR is present.
This commit is contained in:
Ben Wagner 2019-07-12 10:48:10 +02:00 committed by Werner Lemberg
parent 05439f5cc6
commit 12e4307dc7
2 changed files with 28 additions and 6 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2019-07-12 Ben Wagner <bungeman@google.com>
Properly handle phantom points for variation fonts (#56601).
* src/truetype/ttgload.c (TT_Process_Simple_Glyph): Scale phantom
points if HVAR and/or VVAR is present.
2019-07-04 Werner Lemberg <wl@gnu.org>
[psaux] (2/2) Handle fonts that use SEAC for ligatures (#56580).

27
src/truetype/ttgload.c
View File

@ -1102,9 +1102,16 @@
}
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
/* if we have a HVAR table, `pp1' and/or `pp2' are already adjusted */
if ( !( loader->face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) ||
!IS_HINTED( loader->load_flags ) )
/* if we have a HVAR table, `pp1' and/or `pp2' */
/* are already adjusted but unscaled */
if ( ( loader->face->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) &&
IS_HINTED( loader->load_flags ) )
{
loader->pp1.x = FT_MulFix( loader->pp1.x, x_scale );
loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale );
/* pp1.y and pp2.y are always zero */
}
else
#endif
{
loader->pp1 = outline->points[n_points - 4];
@ -1112,9 +1119,17 @@
}
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
/* if we have a VVAR table, `pp3' and/or `pp4' are already adjusted */
if ( !( loader->face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) ||
!IS_HINTED( loader->load_flags ) )
/* if we have a VVAR table, `pp3' and/or `pp4' */
/* are already adjusted but unscaled */
if ( ( loader->face->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) &&
IS_HINTED( loader->load_flags ) )
{
loader->pp3.x = FT_MulFix( loader->pp3.x, x_scale );
loader->pp3.y = FT_MulFix( loader->pp3.y, y_scale );
loader->pp4.x = FT_MulFix( loader->pp4.x, x_scale );
loader->pp4.y = FT_MulFix( loader->pp4.y, y_scale );
}
else
#endif
{
loader->pp3 = outline->points[n_points - 2];