ref: 6c831d658f879e542be0b789fbc38e4f45a33ace
parent: 7809007a5b88b15207d6c6680cd8a979b122eafa
author: Alexei Podtelezhnikov <apodtele@gmail.com>
date: Sat Dec 11 17:34:27 EST 2021
[truetype] Initialize the loader with `hdmx` data. The `hdmx` matching can be done before the glyph is loaded. * include/freetype/internal/tttypes.h (TT_LoaderRec): Add a field. * src/truetype/ttgload.c (compute_glyph_metrics): Relocate the `hdmx` code from here... (tt_loader_init): ... to here, before the glyph is loaded.
--- a/include/freetype/internal/tttypes.h
+++ b/include/freetype/internal/tttypes.h
@@ -1769,6 +1769,9 @@
/* since version 2.6.2 */
FT_ListRec composites;
+ /* since version 2.11.2 */
+ FT_Byte* widthp;
+
} TT_LoaderRec;
--- a/src/truetype/ttgload.c
+++ b/src/truetype/ttgload.c
@@ -2230,10 +2230,6 @@
FT_UInt glyph_index )
{TT_Face face = loader->face;
-#if defined TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY || \
- defined TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL
- TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( face );
-#endif
FT_BBox bbox;
FT_Fixed y_scale;
@@ -2256,38 +2252,11 @@
glyph->metrics.horiBearingX = bbox.xMin;
glyph->metrics.horiBearingY = bbox.yMax;
- glyph->metrics.horiAdvance = SUB_LONG(loader->pp2.x, loader->pp1.x);
+ if ( loader->widthp )
+ glyph->metrics.horiAdvance = loader->widthp[glyph_index] * 64;
+ else
+ glyph->metrics.horiAdvance = SUB_LONG(loader->pp2.x, loader->pp1.x);
- /* Adjust advance width to the value contained in the hdmx table */
- /* unless FT_LOAD_COMPUTE_METRICS is set or backward compatibility */
- /* mode of the v40 interpreter is active. See `ttinterp.h' for */
- /* details on backward compatibility mode. */
- if ( IS_HINTED( loader->load_flags ) &&
- !( loader->load_flags & FT_LOAD_COMPUTE_METRICS ) &&
-#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL
- !( driver->interpreter_version == TT_INTERPRETER_VERSION_40 &&
- ( loader->exec && loader->exec->backward_compatibility ) ) &&
-#endif
-#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
- !( driver->interpreter_version == TT_INTERPRETER_VERSION_38 &&
- !SPH_OPTION_BITMAP_WIDTHS &&
- FT_LOAD_TARGET_MODE( loader->load_flags ) !=
- FT_RENDER_MODE_MONO &&
- ( loader->exec && !loader->exec->compatible_widths ) ) &&
-#endif
- !face->postscript.isFixedPitch )
- {- FT_Byte* widthp;
-
-
- widthp = tt_face_get_device_metrics( face,
- size->metrics->x_ppem,
- glyph_index );
-
- if ( widthp )
- glyph->metrics.horiAdvance = *widthp * 64;
- }
-
/* set glyph dimensions */
glyph->metrics.width = SUB_LONG( bbox.xMax, bbox.xMin );
glyph->metrics.height = SUB_LONG( bbox.yMax, bbox.yMin );
@@ -2752,6 +2721,32 @@
exec->pedantic_hinting = FT_BOOL( load_flags & FT_LOAD_PEDANTIC );
loader->exec = exec;
loader->instructions = exec->glyphIns;
+
+ /* Use the hdmx table if any unless FT_LOAD_COMPUTE_METRICS */
+ /* is set or backward compatibility mode of the v38 or v40 */
+ /* interpreters is active. See `ttinterp.h' for details on */
+ /* backward compatibility mode. */
+ if ( IS_HINTED( loader->load_flags ) &&
+ !( loader->load_flags & FT_LOAD_COMPUTE_METRICS ) &&
+#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL
+ !( driver->interpreter_version == TT_INTERPRETER_VERSION_40 &&
+ exec->backward_compatibility ) &&
+#endif
+#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
+ !( driver->interpreter_version == TT_INTERPRETER_VERSION_38 &&
+ !SPH_OPTION_BITMAP_WIDTHS &&
+ FT_LOAD_TARGET_MODE( loader->load_flags ) !=
+ FT_RENDER_MODE_MONO &&
+ exec->compatible_widths ) &&
+#endif
+ !face->postscript.isFixedPitch )
+ {+ loader->widthp = tt_face_get_device_metrics( face,
+ size->metrics->x_ppem,
+ 0 );
+ }
+ else
+ loader->widthp = NULL;
}
#endif /* TT_USE_BYTECODE_INTERPRETER */