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[truetype] Allow linear scaling for unhinted rendering (#50470). 

* src/truetype/ttdriver.c (tt_size_request): Revert change from
2011-07-16; the intended metrics fix seems now to be implemented in
a different way, making the patch unnecessary.  Note that this
change was usually patched out by all major GNU/Linux distributions
due to heavy side effects.

* src/truetype/ttgload.c (compute_glyph_metrics, TT_Load_Glyph):
Refer to the metrics of the `TT_Size' object.
This commit is contained in:
Werner Lemberg 2017-03-30 13:14:43 +02:00
parent 1ede3674cb
commit bcc74f4daf
3 changed files with 19 additions and 7 deletions
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13
ChangeLog
View File

@ -1,3 +1,16 @@
2017-03-30 Werner Lemberg <wl@gnu.org>
[truetype] Allow linear scaling for unhinted rendering (#50470).
* src/truetype/ttdriver.c (tt_size_request): Revert change from
2011-07-16; the intended metrics fix seems now to be implemented in
a different way, making the patch unnecessary. Note that this
change was usually patched out by all major GNU/Linux distributions
due to heavy side effects.
* src/truetype/ttgload.c (compute_glyph_metrics, TT_Load_Glyph):
Refer to the metrics of the `TT_Size' object.
2017-03-29 Werner Lemberg <wl@gnu.org>
[truetype] Fix thinko related to PS name of default named instance.

3
src/truetype/ttdriver.c
View File

@ -356,8 +356,7 @@
if ( FT_IS_SCALABLE( size->face ) )
{
error = tt_size_reset( ttsize, 0 );
ttsize->root.metrics = ttsize->metrics;
error = tt_size_reset( ttsize, 0 );
#ifdef TT_USE_BYTECODE_INTERPRETER
/* for the `MPS' bytecode instruction we need the point size */

10
src/truetype/ttgload.c
View File

@ -2037,7 +2037,7 @@
y_scale = 0x10000L;
if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 )
y_scale = size->root.metrics.y_scale;
y_scale = size->metrics.y_scale;
if ( glyph->format != FT_GLYPH_FORMAT_COMPOSITE )
FT_Outline_Get_CBox( &glyph->outline, &bbox );
@ -2069,7 +2069,7 @@
widthp = tt_face_get_device_metrics( face,
size->root.metrics.x_ppem,
size->metrics.x_ppem,
glyph_index );
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
@ -2636,11 +2636,11 @@
if ( !glyph->metrics.horiAdvance && glyph->linearHoriAdvance )
glyph->metrics.horiAdvance =
FT_MulFix( glyph->linearHoriAdvance,
size->root.metrics.x_scale );
size->metrics.x_scale );
if ( !glyph->metrics.vertAdvance && glyph->linearVertAdvance )
glyph->metrics.vertAdvance =
FT_MulFix( glyph->linearVertAdvance,
size->root.metrics.y_scale );
size->metrics.y_scale );
}
return FT_Err_Ok;
@ -2736,7 +2736,7 @@
/* TrueType glyphs at all sizes using the bytecode interpreter. */
/* */
if ( !( load_flags & FT_LOAD_NO_SCALE ) &&
size->root.metrics.y_ppem < 24 )
size->metrics.y_ppem < 24 )
glyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION;
Exit: