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Diffstat (limited to 'src/3rdparty/freetype/src/truetype/ttgload.c')
-rw-r--r--src/3rdparty/freetype/src/truetype/ttgload.c294
1 files changed, 203 insertions, 91 deletions
diff --git a/src/3rdparty/freetype/src/truetype/ttgload.c b/src/3rdparty/freetype/src/truetype/ttgload.c
index 1dd319dcbf..2ca63d65a3 100644
--- a/src/3rdparty/freetype/src/truetype/ttgload.c
+++ b/src/3rdparty/freetype/src/truetype/ttgload.c
@@ -4,7 +4,7 @@
*
* TrueType Glyph Loader (body).
*
- * Copyright (C) 1996-2020 by
+ * Copyright (C) 1996-2022 by
* David Turner, Robert Wilhelm, and Werner Lemberg.
*
* This file is part of the FreeType project, and may only be used,
@@ -197,10 +197,17 @@
}
#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */
- if ( !loader->linear_def )
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+ /* With the incremental interface, these values are set by */
+ /* a call to `tt_get_metrics_incremental'. */
+ if ( face->root.internal->incremental_interface == NULL )
+#endif
{
- loader->linear_def = 1;
- loader->linear = advance_width;
+ if ( !loader->linear_def )
+ {
+ loader->linear_def = 1;
+ loader->linear = advance_width;
+ }
}
return FT_Err_Ok;
@@ -210,8 +217,8 @@
#ifdef FT_CONFIG_OPTION_INCREMENTAL
static void
- tt_get_metrics_incr_overrides( TT_Loader loader,
- FT_UInt glyph_index )
+ tt_get_metrics_incremental( TT_Loader loader,
+ FT_UInt glyph_index )
{
TT_Face face = loader->face;
@@ -451,7 +458,7 @@
(void*)&load->exec->glyphIns,
n_ins );
- load->exec->glyphSize = (FT_UShort)tmp;
+ load->exec->glyphSize = (FT_UInt)tmp;
if ( error )
return error;
@@ -736,12 +743,14 @@
subglyph->transform.xx / 65536.0,
subglyph->transform.yy / 65536.0 ));
else if ( subglyph->flags & WE_HAVE_A_2X2 )
- FT_TRACE7(( " scaling: xx=%f, yx=%f\n"
- " xy=%f, yy=%f\n",
+ {
+ FT_TRACE7(( " scaling: xx=%f, yx=%f\n",
subglyph->transform.xx / 65536.0,
- subglyph->transform.yx / 65536.0,
+ subglyph->transform.yx / 65536.0 ));
+ FT_TRACE7(( " xy=%f, yy=%f\n",
subglyph->transform.xy / 65536.0,
subglyph->transform.yy / 65536.0 ));
+ }
subglyph++;
}
@@ -1095,8 +1104,8 @@
for ( ; vec < limit; vec++, u++ )
{
- vec->x = ( FT_MulFix( u->x, x_scale ) + 32 ) >> 6;
- vec->y = ( FT_MulFix( u->y, y_scale ) + 32 ) >> 6;
+ vec->x = ADD_LONG( FT_MulFix( u->x, x_scale ), 32 ) >> 6;
+ vec->y = ADD_LONG( FT_MulFix( u->y, y_scale ), 32 ) >> 6;
}
}
else
@@ -1219,8 +1228,8 @@
p1 = gloader->base.outline.points + k;
p2 = gloader->base.outline.points + l;
- x = p1->x - p2->x;
- y = p1->y - p2->y;
+ x = SUB_LONG( p1->x, p2->x );
+ y = SUB_LONG( p1->y, p2->y );
}
else
{
@@ -1383,7 +1392,7 @@
FT_READ_USHORT( n_ins ) )
return error;
- FT_TRACE5(( " Instructions size = %d\n", n_ins ));
+ FT_TRACE5(( " Instructions size = %hu\n", n_ins ));
/* check it */
max_ins = loader->face->max_profile.maxSizeOfInstructions;
@@ -1391,10 +1400,10 @@
{
/* don't trust `maxSizeOfInstructions'; */
/* only do a rough safety check */
- if ( (FT_Int)n_ins > loader->byte_len )
+ if ( n_ins > loader->byte_len )
{
FT_TRACE1(( "TT_Process_Composite_Glyph:"
- " too many instructions (%d) for glyph with length %d\n",
+ " too many instructions (%hu) for glyph with length %u\n",
n_ins, loader->byte_len ));
return FT_THROW( Too_Many_Hints );
}
@@ -1677,7 +1686,7 @@
FT_ZERO( &inc_stream );
FT_Stream_OpenMemory( &inc_stream,
glyph_data.pointer,
- (FT_ULong)glyph_data.length );
+ glyph_data.length );
loader->stream = &inc_stream;
}
@@ -1685,8 +1694,7 @@
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
- offset = tt_face_get_location( face, glyph_index,
- (FT_UInt*)&loader->byte_len );
+ offset = tt_face_get_location( face, glyph_index, &loader->byte_len );
if ( loader->byte_len > 0 )
{
@@ -1705,7 +1713,7 @@
error = face->access_glyph_frame( loader, glyph_index,
face->glyf_offset + offset,
- (FT_UInt)loader->byte_len );
+ loader->byte_len );
if ( error )
goto Exit;
@@ -1739,13 +1747,11 @@
if ( loader->byte_len == 0 || loader->n_contours == 0 )
{
- /* must initialize points before (possibly) overriding */
- /* glyph metrics from the incremental interface */
- tt_loader_set_pp( loader );
-
#ifdef FT_CONFIG_OPTION_INCREMENTAL
- tt_get_metrics_incr_overrides( loader, glyph_index );
+ tt_get_metrics_incremental( loader, glyph_index );
#endif
+ tt_loader_set_pp( loader );
+
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
@@ -1828,13 +1834,11 @@
goto Exit;
}
- /* must initialize phantom points before (possibly) overriding */
- /* glyph metrics from the incremental interface */
- tt_loader_set_pp( loader );
-
#ifdef FT_CONFIG_OPTION_INCREMENTAL
- tt_get_metrics_incr_overrides( loader, glyph_index );
+ tt_get_metrics_incremental( loader, glyph_index );
#endif
+ tt_loader_set_pp( loader );
+
/***********************************************************************/
/***********************************************************************/
@@ -1844,7 +1848,7 @@
/* (which consists of 10 bytes) */
error = face->access_glyph_frame( loader, glyph_index,
face->glyf_offset + offset + 10,
- (FT_UInt)loader->byte_len - 10 );
+ loader->byte_len - 10 );
if ( error )
goto Exit;
@@ -1898,7 +1902,7 @@
/* clear the nodes filled by sibling chains */
node = ft_list_get_node_at( &loader->composites, recurse_count );
for ( node2 = node; node2; node2 = node2->next )
- node2->data = (void*)FT_ULONG_MAX;
+ node2->data = (void*)-1;
/* check whether we already have a composite glyph with this index */
if ( FT_List_Find( &loader->composites,
@@ -1915,7 +1919,7 @@
else
{
- if ( FT_NEW( node ) )
+ if ( FT_QNEW( node ) )
goto Exit;
node->data = FT_UINT_TO_POINTER( glyph_index );
FT_List_Add( &loader->composites, node );
@@ -2100,7 +2104,7 @@
FT_UInt num_base_subgs = gloader->base.num_subglyphs;
FT_Stream old_stream = loader->stream;
- FT_Int old_byte_len = loader->byte_len;
+ FT_UInt old_byte_len = loader->byte_len;
FT_GlyphLoader_Add( gloader );
@@ -2226,10 +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;
@@ -2252,53 +2252,10 @@
glyph->metrics.horiBearingX = bbox.xMin;
glyph->metrics.horiBearingY = bbox.yMax;
- 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 (
-#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL
- !( driver->interpreter_version == TT_INTERPRETER_VERSION_40 &&
- ( loader->exec && loader->exec->backward_compatibility ) ) &&
-#endif
- !face->postscript.isFixedPitch &&
- IS_HINTED( loader->load_flags ) &&
- !( loader->load_flags & FT_LOAD_COMPUTE_METRICS ) )
- {
- FT_Byte* widthp;
-
-
- widthp = tt_face_get_device_metrics( face,
- size->metrics->x_ppem,
- glyph_index );
-
-#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
-
- if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 )
- {
- FT_Bool ignore_x_mode;
-
-
- ignore_x_mode = FT_BOOL( FT_LOAD_TARGET_MODE( loader->load_flags ) !=
- FT_RENDER_MODE_MONO );
-
- if ( widthp &&
- ( ( ignore_x_mode && loader->exec->compatible_widths ) ||
- !ignore_x_mode ||
- SPH_OPTION_BITMAP_WIDTHS ) )
- glyph->metrics.horiAdvance = *widthp * 64;
- }
- else
-
-#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */
-
- {
- if ( widthp )
- glyph->metrics.horiAdvance = *widthp * 64;
- }
- }
+ if ( loader->widthp )
+ glyph->metrics.horiAdvance = loader->widthp[glyph_index] * 64;
+ else
+ glyph->metrics.horiAdvance = SUB_LONG( loader->pp2.x, loader->pp1.x );
/* set glyph dimensions */
glyph->metrics.width = SUB_LONG( bbox.xMax, bbox.xMin );
@@ -2713,6 +2670,9 @@
error = tt_size_run_prep( size, pedantic );
if ( error )
return error;
+ error = TT_Load_Context( exec, face, size );
+ if ( error )
+ return error;
}
/* check whether the cvt program has disabled hinting */
@@ -2728,12 +2688,58 @@
/* note that this flag can also be modified in a glyph's bytecode */
if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 &&
exec->GS.instruct_control & 4 )
- exec->ignore_x_mode = 0;
-#endif
+ exec->ignore_x_mode = FALSE;
+#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */
+
+#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL
+ /*
+ * Toggle backward compatibility according to what font wants, except
+ * when
+ *
+ * 1) we have a `tricky' font that heavily relies on the interpreter to
+ * render glyphs correctly, for example DFKai-SB, or
+ * 2) FT_RENDER_MODE_MONO (i.e, monochome rendering) is requested.
+ *
+ * In those cases, backward compatibility needs to be turned off to get
+ * correct rendering. The rendering is then completely up to the
+ * font's programming.
+ *
+ */
+ if ( driver->interpreter_version == TT_INTERPRETER_VERSION_40 &&
+ subpixel_hinting_lean &&
+ !FT_IS_TRICKY( glyph->face ) )
+ exec->backward_compatibility = !( exec->GS.instruct_control & 4 );
+ else
+ exec->backward_compatibility = FALSE;
+#endif /* TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL */
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 = size->widthp;
+ }
+ else
+ loader->widthp = NULL;
}
#endif /* TT_USE_BYTECODE_INTERPRETER */
@@ -2781,11 +2787,12 @@
* A function used to load a single glyph within a given glyph slot,
* for a given size.
*
- * @Input:
+ * @InOut:
* glyph ::
* A handle to a target slot object where the glyph
* will be loaded.
*
+ * @Input:
* size ::
* A handle to the source face size at which the glyph
* must be scaled/loaded.
@@ -2890,8 +2897,12 @@
}
else
{
- if ( FT_IS_SCALABLE( glyph->face ) )
+ if ( FT_IS_SCALABLE( glyph->face ) ||
+ FT_HAS_SBIX( glyph->face ) )
{
+ TT_Face face = (TT_Face)glyph->face;
+
+
/* for the bbox we need the header only */
(void)tt_loader_init( &loader, size, glyph, load_flags, TRUE );
(void)load_truetype_glyph( &loader, glyph_index, 0, TRUE );
@@ -2899,6 +2910,35 @@
glyph->linearHoriAdvance = loader.linear;
glyph->linearVertAdvance = loader.vadvance;
+ /* Bitmaps from the 'sbix' table need special treatment: */
+ /* if there is a glyph contour, the bitmap origin must be */
+ /* shifted to be relative to the lower left corner of the */
+ /* glyph bounding box, also taking the left-side bearing */
+ /* (or top bearing) into account. */
+ if ( face->sbit_table_type == TT_SBIT_TABLE_TYPE_SBIX &&
+ loader.n_contours > 0 )
+ {
+ FT_Int bitmap_left;
+ FT_Int bitmap_top;
+
+
+ if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
+ {
+ /* This is a guess, since Apple's CoreText engine doesn't */
+ /* really do vertical typesetting. */
+ bitmap_left = loader.bbox.xMin;
+ bitmap_top = loader.top_bearing;
+ }
+ else
+ {
+ bitmap_left = loader.left_bearing;
+ bitmap_top = loader.bbox.yMin;
+ }
+
+ glyph->bitmap_left += FT_MulFix( bitmap_left, x_scale ) >> 6;
+ glyph->bitmap_top += FT_MulFix( bitmap_top, y_scale ) >> 6;
+ }
+
/* sanity checks: if `xxxAdvance' in the sbit metric */
/* structure isn't set, use `linearXXXAdvance' */
if ( !glyph->metrics.horiAdvance && glyph->linearHoriAdvance )
@@ -2913,6 +2953,12 @@
}
}
+ 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 */
@@ -2922,16 +2968,81 @@
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;
+ /* done if we are only interested in the `hdmx` advance */
+ if ( load_flags & FT_LOAD_ADVANCE_ONLY &&
+ !( load_flags & FT_LOAD_VERTICAL_LAYOUT ) &&
+ loader.widthp )
+ {
+ glyph->metrics.horiAdvance = loader.widthp[glyph_index] * 64;
+ goto Done;
+ }
+
glyph->format = FT_GLYPH_FORMAT_OUTLINE;
glyph->num_subglyphs = 0;
glyph->outline.flags = 0;
@@ -3010,6 +3121,7 @@
glyph->outline.n_points,
glyph->outline.flags ));
+ Done:
tt_loader_done( &loader );
Exit:
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-09 09:16:21 +0000