ref: 5cf01aa2b26727abd97ef202a3687cd7a43819c3
parent: f93a897afedf4a634c74d3d2871519e675ee0d83
author: Moazin Khatti <moazinkhatri@gmail.com>
date: Sat Dec 25 14:46:46 EST 2021
[truetype, cff] Add code to load SVG document. * src/cff/cffgload.c (cff_slot_load): Add code to load SVG doc. * src/truetype/ttgload.c (TT_Load_Glyph): Add code to load SVG doc.
--- a/src/cff/cffgload.c
+++ b/src/cff/cffgload.c
@@ -346,6 +346,76 @@
if ( load_flags & FT_LOAD_SBITS_ONLY )
return FT_THROW( Invalid_Argument );
+#ifdef FT_CONFIG_OPTION_SVG
+ /* check for OT-SVG */
+ if ( ( load_flags & FT_LOAD_COLOR ) &&
+ ( (TT_Face)glyph->root.face )->svg )
+ {+ /*
+ * We load the SVG document and try to grab the advances from the
+ * table. For the bearings we rely on the presetting hook to do that.
+ */
+
+ FT_Short dummy;
+ FT_UShort advanceX;
+ FT_UShort advanceY;
+ SFNT_Service sfnt;
+
+
+ if ( size->root.metrics.x_ppem < 1 ||
+ size->root.metrics.y_ppem < 1 )
+ {+ error = FT_THROW( Invalid_Size_Handle );
+ return error;
+ }
+
+ FT_TRACE3(( "Trying to load SVG glyph\n" ));
+
+ sfnt = (SFNT_Service)((TT_Face)glyph->root.face)->sfnt;
+ error = sfnt->load_svg_doc( (FT_GlyphSlot)glyph, glyph_index );
+ if ( !error )
+ {+ FT_TRACE3(( "Successfully loaded SVG glyph\n" ));
+
+ glyph->root.format = FT_GLYPH_FORMAT_SVG;
+
+ /*
+ * If horizontal or vertical advances are not present in the table,
+ * this is a problem with the font since the standard requires them.
+ * However, we are graceful and calculate the values by ourselves
+ * for the vertical case.
+ */
+ sfnt->get_metrics( face,
+ FALSE,
+ glyph_index,
+ &dummy,
+ &advanceX );
+ sfnt->get_metrics( face,
+ TRUE,
+ glyph_index,
+ &dummy,
+ &advanceY );
+
+ advanceX =
+ (FT_UShort)FT_MulDiv( advanceX,
+ glyph->root.face->size->metrics.x_ppem,
+ glyph->root.face->units_per_EM );
+ advanceY =
+ (FT_UShort)FT_MulDiv( advanceY,
+ glyph->root.face->size->metrics.y_ppem,
+ glyph->root.face->units_per_EM );
+
+ glyph->root.metrics.horiAdvance = advanceX << 6;
+ glyph->root.metrics.vertAdvance = advanceY << 6;
+
+ return error;
+ }
+
+ FT_TRACE3(( "Failed to load SVG glyph\n" ));
+ }
+
+#endif /* FT_CONFIG_OPTION_SVG */
+
/* if we have a CID subfont, use its matrix (which has already */
/* been multiplied with the root matrix) */
--- a/src/truetype/ttgload.c
+++ b/src/truetype/ttgload.c
@@ -2919,6 +2919,12 @@
}
}
+ if ( load_flags & FT_LOAD_SBITS_ONLY )
+ {+ error = FT_THROW( Invalid_Argument );
+ goto Exit;
+ }
+
#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
/* if FT_LOAD_NO_SCALE is not set, `ttmetrics' must be valid */
@@ -2928,11 +2934,67 @@
goto Exit;
}
- if ( load_flags & FT_LOAD_SBITS_ONLY )
+#ifdef FT_CONFIG_OPTION_SVG
+
+ /* check for OT-SVG */
+ if ( ( load_flags & FT_LOAD_COLOR ) && ( (TT_Face)glyph->face )->svg )
{+ SFNT_Service sfnt;
+
+ FT_Short leftBearing;
+ FT_Short topBearing;
+ FT_UShort advanceX;
+ FT_UShort advanceY;
+
+
+ FT_TRACE3(( "Trying to load SVG glyph\n" ));
+ sfnt = (SFNT_Service)( (TT_Face)glyph->face )->sfnt;
+
+ error = sfnt->load_svg_doc( glyph, glyph_index );
+ if ( !error )
+ {+ TT_Face face = (TT_Face)glyph->face;
+
+
+ FT_TRACE3(( "Successfully loaded SVG glyph\n" ));
+
+ glyph->format = FT_GLYPH_FORMAT_SVG;
+
+ sfnt->get_metrics( face,
+ FALSE,
+ glyph_index,
+ &leftBearing,
+ &advanceX );
+ sfnt->get_metrics( face,
+ TRUE,
+ glyph_index,
+ &topBearing,
+ &advanceY );
+
+ advanceX = (FT_UShort)FT_MulDiv( advanceX,
+ glyph->face->size->metrics.x_ppem,
+ glyph->face->units_per_EM );
+ advanceY = (FT_UShort)FT_MulDiv( advanceY,
+ glyph->face->size->metrics.y_ppem,
+ glyph->face->units_per_EM );
+
+ glyph->metrics.horiAdvance = advanceX << 6;
+ glyph->metrics.vertAdvance = advanceY << 6;
+
+ return error;
+ }
+
+ FT_TRACE3(( "Failed to load SVG glyph\n" ));
+ }
+
+ /* return immediately if we only want SVG glyphs */
+ if ( load_flags & FT_LOAD_SVG_ONLY )
+ {error = FT_THROW( Invalid_Argument );
goto Exit;
}
+
+#endif /* FT_CONFIG_OPTION_SVG */
error = tt_loader_init( &loader, size, glyph, load_flags, FALSE );
if ( error )