ref: eba54c28dc97ebcfeb51078025c3c7d996410aa4
parent: 766f529a3109870f5921ff812e9b7832263c0fbc
author: Ewald Hew <[email protected]>
date: Sun Sep 24 18:49:56 EDT 2017
Add objects for new interpreter. Introduce `PS_Decoder' and `PS_Builder' which include all fields from either Type 1 or CFF decoders/builders. * include/freetype/internal/psaux.h (PS_Builder, PS_Decoder): New structs. * src/psaux/psobjs.c, src/psaux/psobjs.h: Add `PS_Builder' functions. * src/psaux/psdecode.c, src/psaux/psdecode.h: New files to hold `PS_Decoder' initialization functions. * src/psaux/psaux.c, src/psaux/Jamfile (_sources), src/psaux/rules.mk (PSAUX_DRV_SRC): Updated.
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,24 @@
2017-09-24 Ewald Hew <[email protected]>
+ [psaux] Add objects for new interpreter.
+
+ Introduce `PS_Decoder' and `PS_Builder' which include all fields
+ from either Type 1 or CFF decoders/builders.
+
+ * include/freetype/internal/psaux.h (PS_Builder, PS_Decoder): New
+ structs.
+
+ * src/psaux/psobjs.c, src/psaux/psobjs.h: Add `PS_Builder'
+ functions.
+
+ * src/psaux/psdecode.c, src/psaux/psdecode.h: New files to hold
+ `PS_Decoder' initialization functions.
+
+ * src/psaux/psaux.c, src/psaux/Jamfile (_sources),
+ src/psaux/rules.mk (PSAUX_DRV_SRC): Updated.
+
+2017-09-24 Ewald Hew <[email protected]>
+
[psaux] Rename files.
Replace the `cf2' file name prefix with `ps' as the Adobe engine
--- a/include/freetype/internal/psaux.h
+++ b/include/freetype/internal/psaux.h
@@ -446,6 +446,204 @@
/*************************************************************************/
/*************************************************************************/
/***** *****/
+ /***** PS BUILDER *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ typedef struct PS_Builder_ PS_Builder;
+ typedef const struct PS_Builder_FuncsRec_* PS_Builder_Funcs;
+
+ typedef struct PS_Builder_FuncsRec_
+ {+ void
+ (*init)( PS_Builder builder,
+ FT_Face face,
+ FT_Size size,
+ FT_GlyphSlot slot,
+ FT_Bool hinting );
+
+ void
+ (*done)( PS_Builder builder );
+
+ } PS_Builder_FuncsRec;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Structure> */
+ /* PS_Builder */
+ /* */
+ /* <Description> */
+ /* A structure used during glyph loading to store its outline. */
+ /* */
+ /* <Fields> */
+ /* memory :: The current memory object. */
+ /* */
+ /* face :: The current face object. */
+ /* */
+ /* glyph :: The current glyph slot. */
+ /* */
+ /* loader :: XXX */
+ /* */
+ /* base :: The base glyph outline. */
+ /* */
+ /* current :: The current glyph outline. */
+ /* */
+ /* pos_x :: The horizontal translation (if composite glyph). */
+ /* */
+ /* pos_y :: The vertical translation (if composite glyph). */
+ /* */
+ /* left_bearing :: The left side bearing point. */
+ /* */
+ /* advance :: The horizontal advance vector. */
+ /* */
+ /* bbox :: Unused. */
+ /* */
+ /* path_begun :: A flag which indicates that a new path has begun. */
+ /* */
+ /* load_points :: If this flag is not set, no points are loaded. */
+ /* */
+ /* no_recurse :: Set but not used. */
+ /* */
+ /* metrics_only :: A boolean indicating that we only want to compute */
+ /* the metrics of a given glyph, not load all of its */
+ /* points. */
+ /* */
+ /* funcs :: An array of function pointers for the builder. */
+ /* */
+ struct PS_Builder_
+ {+ FT_Memory memory;
+ TT_Face face;
+ CFF_GlyphSlot glyph;
+ FT_GlyphLoader loader;
+ FT_Outline* base;
+ FT_Outline* current;
+
+ FT_Pos pos_x;
+ FT_Pos pos_y;
+
+ FT_Vector left_bearing;
+ FT_Vector advance;
+
+ FT_BBox bbox; /* bounding box */
+ FT_Bool path_begun;
+ FT_Bool load_points;
+ FT_Bool no_recurse;
+
+ FT_Bool metrics_only;
+
+ void* hints_funcs; /* hinter-specific */
+ void* hints_globals; /* hinter-specific */
+
+ PS_Builder_FuncsRec funcs;
+
+ };
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** PS DECODER *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+#define PS_MAX_OPERANDS 48
+#define PS_MAX_SUBRS_CALLS 16 /* maximum subroutine nesting; */
+ /* only 10 are allowed but there exist */
+ /* fonts like `HiraKakuProN-W3.ttf' */
+ /* (Hiragino Kaku Gothic ProN W3; */
+ /* 8.2d6e1; 2014-12-19) that exceed */
+ /* this limit */
+
+ /* execution context charstring zone */
+
+ typedef struct PS_Decoder_Zone_
+ {+ FT_Byte* base;
+ FT_Byte* limit;
+ FT_Byte* cursor;
+
+ } PS_Decoder_Zone;
+
+
+ typedef FT_Error
+ (*PS_Decoder_Get_Glyph_Callback)( TT_Face face,
+ FT_UInt glyph_index,
+ FT_Byte** pointer,
+ FT_ULong* length );
+
+ typedef void
+ (*PS_Decoder_Free_Glyph_Callback)( TT_Face face,
+ FT_Byte** pointer,
+ FT_ULong length );
+
+ typedef struct PS_Decoder_
+ {+ PS_Builder builder;
+
+ FT_Fixed stack[PS_MAX_OPERANDS + 1];
+ FT_Fixed* top;
+
+ PS_Decoder_Zone zones[PS_MAX_SUBRS_CALLS + 1];
+ PS_Decoder_Zone* zone;
+
+ FT_Int flex_state;
+ FT_Int num_flex_vectors;
+ FT_Vector flex_vectors[7];
+
+ CFF_Font cff;
+ CFF_SubFont current_subfont; /* for current glyph_index */
+
+ FT_Pos glyph_width;
+ FT_Pos nominal_width;
+
+ FT_Bool read_width;
+ FT_Bool width_only;
+ FT_Int num_hints;
+
+ FT_UInt num_locals;
+ FT_UInt num_globals;
+
+ FT_Int locals_bias;
+ FT_Int globals_bias;
+
+ FT_Byte** locals;
+ FT_Byte** globals;
+
+ FT_Byte** glyph_names; /* for pure CFF fonts only */
+ FT_UInt num_glyphs; /* number of glyphs in font */
+
+ FT_Render_Mode hint_mode;
+
+ FT_Bool seac;
+
+ PS_Decoder_Get_Glyph_Callback get_glyph_callback;
+ PS_Decoder_Free_Glyph_Callback free_glyph_callback;
+
+ /* Type 1 stuff */
+ FT_Service_PsCMaps psnames; /* for seac */
+
+ FT_Int lenIV; /* internal for sub routine calls */
+ FT_UInt* locals_len; /* array of subrs length (optional) */
+ FT_Hash locals_hash; /* used if `num_subrs' was massaged */
+
+ FT_Matrix font_matrix;
+ FT_Vector font_offset;
+
+ PS_Blend blend; /* for multiple master support */
+
+ FT_Long* buildchar;
+ FT_UInt len_buildchar;
+
+ } PS_Decoder;
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
/***** T1 BUILDER *****/
/***** *****/
/*************************************************************************/
--- a/src/psaux/Jamfile
+++ b/src/psaux/Jamfile
@@ -22,6 +22,8 @@
psobjs
t1cmap
t1decode
+ cffdecode
+ psdecode
psarrst
psblues
pserror
--- a/src/psaux/psaux.c
+++ b/src/psaux/psaux.c
@@ -26,6 +26,7 @@
#include "t1cmap.c"
#include "t1decode.c"
#include "cffdecode.c"
+#include "psdecode.c"
#include "psarrst.c"
#include "psblues.c"
--- /dev/null
+++ b/src/psaux/psdecode.c
@@ -1,0 +1,57 @@
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_SERVICE_H
+#include FT_SERVICE_CFF_TABLE_LOAD_H
+
+#include "psdecode.h"
+#include "psobjs.h"
+
+#include "psauxerr.h"
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* ps_decoder_init */
+ /* */
+ /* <Description> */
+ /* Initializes a given glyph decoder. */
+ /* */
+ /* <InOut> */
+ /* decoder :: A pointer to the glyph builder to initialize. */
+ /* */
+ /* <Input> */
+ /* face :: The current face object. */
+ /* */
+ /* size :: The current size object. */
+ /* */
+ /* slot :: The current glyph object. */
+ /* */
+ /* hinting :: Whether hinting is active. */
+ /* */
+ /* hint_mode :: The hinting mode. */
+ /* */
+ FT_LOCAL_DEF( void )
+ ps_decoder_init( PS_Decoder* decoder,
+ TT_Face face,
+ FT_Size size,
+ CFF_GlyphSlot slot,
+ FT_Byte** glyph_names,
+ PS_Blend blend,
+ FT_Bool hinting,
+ FT_Render_Mode hint_mode,
+ PS_Decoder_Get_Glyph_Callback get_callback,
+ PS_Decoder_Free_Glyph_Callback free_callback )
+ {+ }
+
+
+ /* this function is used to select the subfont */
+ /* and the locals subrs array */
+ FT_LOCAL_DEF( FT_Error )
+ ps_decoder_prepare( PS_Decoder* decoder,
+ FT_Size size,
+ FT_UInt glyph_index )
+ {+ }
--- /dev/null
+++ b/src/psaux/psdecode.h
@@ -1,0 +1,13 @@
+#ifndef PSDECODE_H_
+#define PSDECODE_H_
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_POSTSCRIPT_AUX_H
+
+#include "cffdecode.h"
+#include "t1decode.h"
+
+
+
+#endif
--- a/src/psaux/psobjs.c
+++ b/src/psaux/psobjs.c
@@ -2026,6 +2026,250 @@
/*************************************************************************/
/*************************************************************************/
/***** *****/
+ /***** PS BUILDER *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* ps_builder_init */
+ /* */
+ /* <Description> */
+ /* Initializes a given glyph builder. */
+ /* */
+ /* <InOut> */
+ /* builder :: A pointer to the glyph builder to initialize. */
+ /* */
+ /* <Input> */
+ /* face :: The current face object. */
+ /* */
+ /* size :: The current size object. */
+ /* */
+ /* glyph :: The current glyph object. */
+ /* */
+ /* hinting :: Whether hinting should be applied. */
+ /* */
+ FT_LOCAL_DEF( void )
+ ps_builder_init( PS_Builder* builder,
+ TT_Face face,
+ FT_Size size,
+ CFF_GlyphSlot glyph,
+ FT_Bool hinting )
+ {+ }
+
+
+ /*************************************************************************/
+ /* */
+ /* <Function> */
+ /* ps_builder_done */
+ /* */
+ /* <Description> */
+ /* Finalizes a given glyph builder. Its contents can still be used */
+ /* after the call, but the function saves important information */
+ /* within the corresponding glyph slot. */
+ /* */
+ /* <Input> */
+ /* builder :: A pointer to the glyph builder to finalize. */
+ /* */
+ FT_LOCAL_DEF( void )
+ ps_builder_done( PS_Builder* builder )
+ {+ CFF_GlyphSlot glyph = builder->glyph;
+
+
+ if ( glyph )
+ glyph->root.outline = *builder->base;
+ }
+
+
+ /* check that there is enough space for `count' more points */
+ FT_LOCAL_DEF( FT_Error )
+ ps_builder_check_points( PS_Builder* builder,
+ FT_Int count )
+ {+ return FT_GLYPHLOADER_CHECK_POINTS( builder->loader, count, 0 );
+ }
+
+
+ /* add a new point, do not check space */
+ FT_LOCAL_DEF( void )
+ ps_builder_add_point( PS_Builder* builder,
+ FT_Pos x,
+ FT_Pos y,
+ FT_Byte flag )
+ {+ FT_Outline* outline = builder->current;
+
+
+ if ( builder->load_points )
+ {+ FT_Vector* point = outline->points + outline->n_points;
+ FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points;
+
+#ifdef CFF_CONFIG_OPTION_OLD_ENGINE
+ CFF_Driver driver = (CFF_Driver)FT_FACE_DRIVER( builder->face );
+
+
+ if ( driver->hinting_engine == FT_CFF_HINTING_FREETYPE )
+ {+ point->x = x >> 16;
+ point->y = y >> 16;
+ }
+ else
+#endif
+#ifdef T1_CONFIG_OPTION_OLD_ENGINE
+ if ( builder->face->is_t1 )
+ {+ point->x = FIXED_TO_INT( x );
+ point->y = FIXED_TO_INT( y );
+ }
+ else
+#endif
+ {+ /* cf2_decoder_parse_charstrings uses 16.16 coordinates */
+ point->x = x >> 10;
+ point->y = y >> 10;
+ }
+ *control = (FT_Byte)( flag ? FT_CURVE_TAG_ON : FT_CURVE_TAG_CUBIC );
+ }
+ outline->n_points++;
+ }
+
+
+ /* check space for a new on-curve point, then add it */
+ FT_LOCAL_DEF( FT_Error )
+ ps_builder_add_point1( PS_Builder* builder,
+ FT_Pos x,
+ FT_Pos y )
+ {+ FT_Error error;
+
+
+ error = ps_builder_check_points( builder, 1 );
+ if ( !error )
+ ps_builder_add_point( builder, x, y, 1 );
+
+ return error;
+ }
+
+
+ /* check space for a new contour, then add it */
+ FT_LOCAL_DEF( FT_Error )
+ ps_builder_add_contour( PS_Builder* builder )
+ {+ FT_Outline* outline = builder->current;
+ FT_Error error;
+
+
+ /* this might happen in invalid fonts */
+ if ( !outline )
+ {+ FT_ERROR(( "t1_builder_add_contour: no outline to add points to\n" ));
+ return FT_THROW( Invalid_File_Format );
+ }
+
+ if ( !builder->load_points )
+ {+ outline->n_contours++;
+ return FT_Err_Ok;
+ }
+
+ error = FT_GLYPHLOADER_CHECK_POINTS( builder->loader, 0, 1 );
+ if ( !error )
+ {+ if ( outline->n_contours > 0 )
+ outline->contours[outline->n_contours - 1] =
+ (short)( outline->n_points - 1 );
+
+ outline->n_contours++;
+ }
+
+ return error;
+ }
+
+
+ /* if a path was begun, add its first on-curve point */
+ FT_LOCAL_DEF( FT_Error )
+ ps_builder_start_point( PS_Builder* builder,
+ FT_Pos x,
+ FT_Pos y )
+ {+ FT_Error error = FT_Err_Ok;
+
+
+ /* test whether we are building a new contour */
+ if ( !builder->path_begun )
+ {+ builder->path_begun = 1;
+ error = ps_builder_add_contour( builder );
+ if ( !error )
+ error = ps_builder_add_point1( builder, x, y );
+ }
+
+ return error;
+ }
+
+
+ /* close the current contour */
+ FT_LOCAL_DEF( void )
+ ps_builder_close_contour( PS_Builder* builder )
+ {+ FT_Outline* outline = builder->current;
+ FT_Int first;
+
+
+ if ( !outline )
+ return;
+
+ first = outline->n_contours <= 1
+ ? 0 : outline->contours[outline->n_contours - 2] + 1;
+
+ /* in malformed fonts it can happen that a contour was started */
+ /* but no points were added */
+ if ( outline->n_contours && first == outline->n_points )
+ {+ outline->n_contours--;
+ return;
+ }
+
+ /* We must not include the last point in the path if it */
+ /* is located on the first point. */
+ if ( outline->n_points > 1 )
+ {+ FT_Vector* p1 = outline->points + first;
+ FT_Vector* p2 = outline->points + outline->n_points - 1;
+ FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points - 1;
+
+
+ /* `delete' last point only if it coincides with the first */
+ /* point and it is not a control point (which can happen). */
+ if ( p1->x == p2->x && p1->y == p2->y )
+ if ( *control == FT_CURVE_TAG_ON )
+ outline->n_points--;
+ }
+
+ if ( outline->n_contours > 0 )
+ {+ /* Don't add contours only consisting of one point, i.e., */
+ /* check whether the first and the last point is the same. */
+ if ( first == outline->n_points - 1 )
+ {+ outline->n_contours--;
+ outline->n_points--;
+ }
+ else
+ outline->contours[outline->n_contours - 1] =
+ (short)( outline->n_points - 1 );
+ }
+ }
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
/***** OTHER *****/
/***** *****/
/*************************************************************************/
--- a/src/psaux/psobjs.h
+++ b/src/psaux/psobjs.h
@@ -236,6 +236,51 @@
/*************************************************************************/
/*************************************************************************/
/***** *****/
+ /***** PS BUILDER *****/
+ /***** *****/
+ /*************************************************************************/
+ /*************************************************************************/
+
+ FT_LOCAL( void )
+ ps_builder_init( PS_Builder* builder,
+ TT_Face face,
+ FT_Size size,
+ CFF_GlyphSlot glyph,
+ FT_Bool hinting );
+
+ FT_LOCAL( void )
+ ps_builder_done( PS_Builder* builder );
+
+ FT_LOCAL( FT_Error )
+ ps_builder_check_points( PS_Builder* builder,
+ FT_Int count );
+
+ FT_LOCAL( void )
+ ps_builder_add_point( PS_Builder* builder,
+ FT_Pos x,
+ FT_Pos y,
+ FT_Byte flag );
+
+ FT_LOCAL( FT_Error )
+ ps_builder_add_point1( PS_Builder* builder,
+ FT_Pos x,
+ FT_Pos y );
+
+ FT_LOCAL( FT_Error )
+ ps_builder_add_contour( PS_Builder* builder );
+
+ FT_LOCAL( FT_Error )
+ ps_builder_start_point( PS_Builder* builder,
+ FT_Pos x,
+ FT_Pos y );
+
+ FT_LOCAL( void )
+ ps_builder_close_contour( PS_Builder* builder );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
/***** OTHER *****/
/***** *****/
/*************************************************************************/
--- a/src/psaux/rules.mk
+++ b/src/psaux/rules.mk
@@ -36,6 +36,7 @@
$(PSAUX_DIR)/psauxmod.c \
$(PSAUX_DIR)/psarrst.c \
$(PSAUX_DIR)/psblues.c \
+ $(PSAUX_DIR)/psdecode.c \
$(PSAUX_DIR)/pserror.c \
$(PSAUX_DIR)/psfont.c \
$(PSAUX_DIR)/psft.c \