Commit 5cf01aa2b26727abd97ef202a3687cd7a43819c3
2021-12-25T19:46:46
[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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168
diff --git a/src/cff/cffgload.c b/src/cff/cffgload.c
index 86b8ea5..2ef9c76 100644
--- 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) */
diff --git a/src/truetype/ttgload.c b/src/truetype/ttgload.c
index e773059..33d743b 100644
--- 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 */
@@ -2928,12 +2934,68 @@
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 )
goto Exit;