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[psaux] (2/2) Handle fonts that use SEAC for ligatures (#56580).

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The same as previous commit but for the old engine.

* src/psaux/t1decode.c (t1operator_seac): Implement it.
This commit is contained in:
Werner Lemberg 2019-07-04 14:28:04 +02:00
parent f2b64583cb
commit 05439f5cc6
2 changed files with 23 additions and 6 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2019-07-04 Werner Lemberg <wl@gnu.org>
[psaux] (2/2) Handle fonts that use SEAC for ligatures (#56580).
The same as previous commit but for the old engine.
* src/psaux/t1decode.c (t1operator_seac): Implement it.
2019-07-04 Chris Liddell <chris.liddell@artifex.com>
[psaux] (1/2) Handle fonts that use SEAC for ligatures (#56580).

21
src/psaux/t1decode.c
View File

@ -367,6 +367,12 @@
FT_GlyphLoader_Prepare( decoder->builder.loader ); /* prepare loader */
/* save the left bearing and width of the SEAC */
/* glyph as they will be erased by the next load */
left_bearing = decoder->builder.left_bearing;
advance = decoder->builder.advance;
/* the seac operator must not be nested */
decoder->seac = TRUE;
error = t1_decoder_parse_glyph( decoder, (FT_UInt)bchar_index );
@ -374,11 +380,14 @@
if ( error )
goto Exit;
/* save the left bearing and width of the base character */
/* as they will be erased by the next load. */
/* If the SEAC glyph doesn't have a (H)SBW of its */
/* own use the values from the base glyph. */
left_bearing = decoder->builder.left_bearing;
advance = decoder->builder.advance;
if ( decoder->builder.parse_state != T1_Parse_Have_Width )
{
left_bearing = decoder->builder.left_bearing;
advance = decoder->builder.advance;
}
decoder->builder.left_bearing.x = 0;
decoder->builder.left_bearing.y = 0;
@ -396,8 +405,8 @@
if ( error )
goto Exit;
/* restore the left side bearing and */
/* advance width of the base character */
/* restore the left side bearing and advance width */
/* of the SEAC glyph or base character (saved above) */
decoder->builder.left_bearing = left_bearing;
decoder->builder.advance = advance;