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/***************************************************************************/
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/* */
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/* cffgload.c */
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/* */
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/* OpenType Glyph Loader (body). */
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/* */
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/* Copyright 1996-2011 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#include <ft2build.h>
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#include FT_INTERNAL_DEBUG_H
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#include FT_INTERNAL_STREAM_H
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#include FT_INTERNAL_SFNT_H
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#include FT_OUTLINE_H
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#include "cffobjs.h"
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#include "cffload.h"
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#include "cffgload.h"
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#include "cfferrs.h"
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/*************************************************************************/
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/* */
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/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
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/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
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/* messages during execution. */
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/* */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_cffgload
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typedef enum CFF_Operator_
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{
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cff_op_unknown = 0,
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cff_op_rmoveto,
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cff_op_hmoveto,
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cff_op_vmoveto,
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cff_op_rlineto,
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cff_op_hlineto,
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cff_op_vlineto,
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cff_op_rrcurveto,
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cff_op_hhcurveto,
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cff_op_hvcurveto,
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cff_op_rcurveline,
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cff_op_rlinecurve,
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cff_op_vhcurveto,
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cff_op_vvcurveto,
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cff_op_flex,
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cff_op_hflex,
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cff_op_hflex1,
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cff_op_flex1,
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cff_op_endchar,
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cff_op_hstem,
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cff_op_vstem,
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cff_op_hstemhm,
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cff_op_vstemhm,
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cff_op_hintmask,
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cff_op_cntrmask,
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cff_op_dotsection, /* deprecated, acts as no-op */
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cff_op_abs,
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cff_op_add,
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cff_op_sub,
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cff_op_div,
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cff_op_neg,
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cff_op_random,
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cff_op_mul,
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cff_op_sqrt,
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cff_op_blend,
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cff_op_drop,
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cff_op_exch,
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cff_op_index,
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cff_op_roll,
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cff_op_dup,
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cff_op_put,
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cff_op_get,
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cff_op_store,
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cff_op_load,
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cff_op_and,
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cff_op_or,
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cff_op_not,
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cff_op_eq,
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cff_op_ifelse,
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cff_op_callsubr,
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cff_op_callgsubr,
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cff_op_return,
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/* Type 1 opcodes: invalid but seen in real life */
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cff_op_hsbw,
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cff_op_closepath,
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cff_op_callothersubr,
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cff_op_pop,
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cff_op_seac,
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cff_op_sbw,
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cff_op_setcurrentpoint,
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/* do not remove */
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cff_op_max
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} CFF_Operator;
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#define CFF_COUNT_CHECK_WIDTH 0x80
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#define CFF_COUNT_EXACT 0x40
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#define CFF_COUNT_CLEAR_STACK 0x20
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/* count values which have the `CFF_COUNT_CHECK_WIDTH' flag set are */
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/* used for checking the width and requested numbers of arguments */
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/* only; they are set to zero afterwards */
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/* the other two flags are informative only and unused currently */
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static const FT_Byte cff_argument_counts[] =
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{
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0, /* unknown */
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2 | CFF_COUNT_CHECK_WIDTH | CFF_COUNT_EXACT, /* rmoveto */
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1 | CFF_COUNT_CHECK_WIDTH | CFF_COUNT_EXACT,
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1 | CFF_COUNT_CHECK_WIDTH | CFF_COUNT_EXACT,
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0 | CFF_COUNT_CLEAR_STACK, /* rlineto */
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0 | CFF_COUNT_CLEAR_STACK,
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0 | CFF_COUNT_CLEAR_STACK,
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0 | CFF_COUNT_CLEAR_STACK, /* rrcurveto */
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0 | CFF_COUNT_CLEAR_STACK,
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0 | CFF_COUNT_CLEAR_STACK,
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0 | CFF_COUNT_CLEAR_STACK,
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0 | CFF_COUNT_CLEAR_STACK,
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0 | CFF_COUNT_CLEAR_STACK,
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0 | CFF_COUNT_CLEAR_STACK,
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13, /* flex */
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7,
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9,
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11,
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0 | CFF_COUNT_CHECK_WIDTH, /* endchar */
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161 |
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2 | CFF_COUNT_CHECK_WIDTH, /* hstem */
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2 | CFF_COUNT_CHECK_WIDTH,
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2 | CFF_COUNT_CHECK_WIDTH,
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2 | CFF_COUNT_CHECK_WIDTH,
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0 | CFF_COUNT_CHECK_WIDTH, /* hintmask */
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0 | CFF_COUNT_CHECK_WIDTH, /* cntrmask */
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0, /* dotsection */
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1, /* abs */
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2,
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2,
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2,
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1,
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0,
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2,
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1,
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1, /* blend */
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1, /* drop */
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2,
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1,
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2,
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1,
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2, /* put */
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1,
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4,
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3,
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2, /* and */
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2,
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1,
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2,
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4,
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1, /* callsubr */
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1,
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0,
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2, /* hsbw */
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0,
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0,
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0,
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5, /* seac */
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4, /* sbw */
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2 /* setcurrentpoint */
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};
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/********** *********/
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/********** *********/
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/********** GENERIC CHARSTRING PARSING *********/
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/********** *********/
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/********** *********/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Function> */
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/* cff_builder_init */
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/* */
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/* <Description> */
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/* Initializes a given glyph builder. */
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/* */
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/* <InOut> */
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/* builder :: A pointer to the glyph builder to initialize. */
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/* */
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/* <Input> */
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/* face :: The current face object. */
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/* */
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/* size :: The current size object. */
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/* */
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/* glyph :: The current glyph object. */
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/* */
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/* hinting :: Whether hinting is active. */
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/* */
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static void
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cff_builder_init( CFF_Builder* builder,
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TT_Face face,
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CFF_Size size,
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CFF_GlyphSlot glyph,
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FT_Bool hinting )
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{
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builder->path_begun = 0;
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builder->load_points = 1;
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builder->face = face;
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builder->glyph = glyph;
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builder->memory = face->root.memory;
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259 |
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if ( glyph )
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{
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FT_GlyphLoader loader = glyph->root.internal->loader;
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builder->loader = loader;
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builder->base = &loader->base.outline;
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builder->current = &loader->current.outline;
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FT_GlyphLoader_Rewind( loader );
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269 |
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builder->hints_globals = 0;
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builder->hints_funcs = 0;
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272 |
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if ( hinting && size )
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{
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CFF_Internal internal = (CFF_Internal)size->root.internal;
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277 |
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builder->hints_globals = (void *)internal->topfont;
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builder->hints_funcs = glyph->root.internal->glyph_hints;
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}
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}
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builder->pos_x = 0;
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builder->pos_y = 0;
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285 |
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builder->left_bearing.x = 0;
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builder->left_bearing.y = 0;
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builder->advance.x = 0;
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builder->advance.y = 0;
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* cff_builder_done */
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297 |
/* */
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/* <Description> */
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/* Finalizes a given glyph builder. Its contents can still be used */
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/* after the call, but the function saves important information */
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/* within the corresponding glyph slot. */
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/* */
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/* <Input> */
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/* builder :: A pointer to the glyph builder to finalize. */
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/* */
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static void
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cff_builder_done( CFF_Builder* builder )
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{
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CFF_GlyphSlot glyph = builder->glyph;
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310 |
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311 |
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if ( glyph )
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glyph->root.outline = *builder->base;
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}
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316 |
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/*************************************************************************/
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/* */
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/* <Function> */
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/* cff_compute_bias */
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/* */
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/* <Description> */
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/* Computes the bias value in dependence of the number of glyph */
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/* subroutines. */
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/* */
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/* <Input> */
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/* in_charstring_type :: The `CharstringType' value of the top DICT */
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328 |
/* dictionary. */
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/* */
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/* num_subrs :: The number of glyph subroutines. */
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/* */
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/* <Return> */
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/* The bias value. */
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static FT_Int
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cff_compute_bias( FT_Int in_charstring_type,
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FT_UInt num_subrs )
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{
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338 |
FT_Int result;
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339 |
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340 |
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341 |
if ( in_charstring_type == 1 )
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result = 0;
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343 |
else if ( num_subrs < 1240 )
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result = 107;
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else if ( num_subrs < 33900U )
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result = 1131;
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else
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result = 32768U;
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349 |
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350 |
return result;
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351 |
}
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352 |
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353 |
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354 |
/*************************************************************************/
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355 |
/* */
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356 |
/* <Function> */
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357 |
/* cff_decoder_init */
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358 |
/* */
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359 |
/* <Description> */
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360 |
/* Initializes a given glyph decoder. */
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361 |
/* */
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362 |
/* <InOut> */
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363 |
/* decoder :: A pointer to the glyph builder to initialize. */
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364 |
/* */
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365 |
/* <Input> */
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366 |
/* face :: The current face object. */
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367 |
/* */
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368 |
/* size :: The current size object. */
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369 |
/* */
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370 |
/* slot :: The current glyph object. */
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371 |
/* */
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372 |
/* hinting :: Whether hinting is active. */
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373 |
/* */
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374 |
/* hint_mode :: The hinting mode. */
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375 |
/* */
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376 |
FT_LOCAL_DEF( void )
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377 |
cff_decoder_init( CFF_Decoder* decoder,
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378 |
TT_Face face,
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379 |
CFF_Size size,
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380 |
CFF_GlyphSlot slot,
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381 |
FT_Bool hinting,
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382 |
FT_Render_Mode hint_mode )
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383 |
{
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384 |
CFF_Font cff = (CFF_Font)face->extra.data;
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385 |
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386 |
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387 |
/* clear everything */
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388 |
FT_MEM_ZERO( decoder, sizeof ( *decoder ) );
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389 |
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390 |
/* initialize builder */
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391 |
cff_builder_init( &decoder->builder, face, size, slot, hinting );
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392 |
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393 |
/* initialize Type2 decoder */
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394 |
decoder->cff = cff;
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395 |
decoder->num_globals = cff->global_subrs_index.count;
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|
|
396 |
decoder->globals = cff->global_subrs;
|
|
|
397 |
decoder->globals_bias = cff_compute_bias(
|
|
|
398 |
cff->top_font.font_dict.charstring_type,
|
|
|
399 |
decoder->num_globals );
|
|
|
400 |
|
|
|
401 |
decoder->hint_mode = hint_mode;
|
|
|
402 |
}
|
|
|
403 |
|
|
|
404 |
|
|
|
405 |
/* this function is used to select the subfont */
|
|
|
406 |
/* and the locals subrs array */
|
|
|
407 |
FT_LOCAL_DEF( FT_Error )
|
|
|
408 |
cff_decoder_prepare( CFF_Decoder* decoder,
|
|
|
409 |
CFF_Size size,
|
|
|
410 |
FT_UInt glyph_index )
|
|
|
411 |
{
|
|
|
412 |
CFF_Builder *builder = &decoder->builder;
|
|
|
413 |
CFF_Font cff = (CFF_Font)builder->face->extra.data;
|
|
|
414 |
CFF_SubFont sub = &cff->top_font;
|
|
|
415 |
FT_Error error = CFF_Err_Ok;
|
|
|
416 |
|
|
|
417 |
|
|
|
418 |
/* manage CID fonts */
|
|
|
419 |
if ( cff->num_subfonts )
|
|
|
420 |
{
|
|
|
421 |
FT_Byte fd_index = cff_fd_select_get( &cff->fd_select, glyph_index );
|
|
|
422 |
|
|
|
423 |
|
|
|
424 |
if ( fd_index >= cff->num_subfonts )
|
|
|
425 |
{
|
|
|
426 |
FT_TRACE4(( "cff_decoder_prepare: invalid CID subfont index\n" ));
|
|
|
427 |
error = CFF_Err_Invalid_File_Format;
|
|
|
428 |
goto Exit;
|
|
|
429 |
}
|
|
|
430 |
|
|
|
431 |
FT_TRACE3(( "glyph index %d (subfont %d):\n", glyph_index, fd_index ));
|
|
|
432 |
|
|
|
433 |
sub = cff->subfonts[fd_index];
|
|
|
434 |
|
|
|
435 |
if ( builder->hints_funcs && size )
|
|
|
436 |
{
|
|
|
437 |
CFF_Internal internal = (CFF_Internal)size->root.internal;
|
|
|
438 |
|
|
|
439 |
|
|
|
440 |
/* for CFFs without subfonts, this value has already been set */
|
|
|
441 |
builder->hints_globals = (void *)internal->subfonts[fd_index];
|
|
|
442 |
}
|
|
|
443 |
}
|
|
|
444 |
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
|
445 |
else
|
|
|
446 |
FT_TRACE3(( "glyph index %d:\n", glyph_index ));
|
|
|
447 |
#endif
|
|
|
448 |
|
|
|
449 |
decoder->num_locals = sub->local_subrs_index.count;
|
|
|
450 |
decoder->locals = sub->local_subrs;
|
|
|
451 |
decoder->locals_bias = cff_compute_bias(
|
|
|
452 |
decoder->cff->top_font.font_dict.charstring_type,
|
|
|
453 |
decoder->num_locals );
|
|
|
454 |
|
|
|
455 |
decoder->glyph_width = sub->private_dict.default_width;
|
|
|
456 |
decoder->nominal_width = sub->private_dict.nominal_width;
|
|
|
457 |
|
|
|
458 |
Exit:
|
|
|
459 |
return error;
|
|
|
460 |
}
|
|
|
461 |
|
|
|
462 |
|
|
|
463 |
/* check that there is enough space for `count' more points */
|
|
|
464 |
static FT_Error
|
|
|
465 |
check_points( CFF_Builder* builder,
|
|
|
466 |
FT_Int count )
|
|
|
467 |
{
|
|
|
468 |
return FT_GLYPHLOADER_CHECK_POINTS( builder->loader, count, 0 );
|
|
|
469 |
}
|
|
|
470 |
|
|
|
471 |
|
|
|
472 |
/* add a new point, do not check space */
|
|
|
473 |
static void
|
|
|
474 |
cff_builder_add_point( CFF_Builder* builder,
|
|
|
475 |
FT_Pos x,
|
|
|
476 |
FT_Pos y,
|
|
|
477 |
FT_Byte flag )
|
|
|
478 |
{
|
|
|
479 |
FT_Outline* outline = builder->current;
|
|
|
480 |
|
|
|
481 |
|
|
|
482 |
if ( builder->load_points )
|
|
|
483 |
{
|
|
|
484 |
FT_Vector* point = outline->points + outline->n_points;
|
|
|
485 |
FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points;
|
|
|
486 |
|
|
|
487 |
|
|
|
488 |
point->x = x >> 16;
|
|
|
489 |
point->y = y >> 16;
|
|
|
490 |
*control = (FT_Byte)( flag ? FT_CURVE_TAG_ON : FT_CURVE_TAG_CUBIC );
|
|
|
491 |
}
|
|
|
492 |
|
|
|
493 |
outline->n_points++;
|
|
|
494 |
}
|
|
|
495 |
|
|
|
496 |
|
|
|
497 |
/* check space for a new on-curve point, then add it */
|
|
|
498 |
static FT_Error
|
|
|
499 |
cff_builder_add_point1( CFF_Builder* builder,
|
|
|
500 |
FT_Pos x,
|
|
|
501 |
FT_Pos y )
|
|
|
502 |
{
|
|
|
503 |
FT_Error error;
|
|
|
504 |
|
|
|
505 |
|
|
|
506 |
error = check_points( builder, 1 );
|
|
|
507 |
if ( !error )
|
|
|
508 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
509 |
|
|
|
510 |
return error;
|
|
|
511 |
}
|
|
|
512 |
|
|
|
513 |
|
|
|
514 |
/* check space for a new contour, then add it */
|
|
|
515 |
static FT_Error
|
|
|
516 |
cff_builder_add_contour( CFF_Builder* builder )
|
|
|
517 |
{
|
|
|
518 |
FT_Outline* outline = builder->current;
|
|
|
519 |
FT_Error error;
|
|
|
520 |
|
|
|
521 |
|
|
|
522 |
if ( !builder->load_points )
|
|
|
523 |
{
|
|
|
524 |
outline->n_contours++;
|
|
|
525 |
return CFF_Err_Ok;
|
|
|
526 |
}
|
|
|
527 |
|
|
|
528 |
error = FT_GLYPHLOADER_CHECK_POINTS( builder->loader, 0, 1 );
|
|
|
529 |
if ( !error )
|
|
|
530 |
{
|
|
|
531 |
if ( outline->n_contours > 0 )
|
|
|
532 |
outline->contours[outline->n_contours - 1] =
|
|
|
533 |
(short)( outline->n_points - 1 );
|
|
|
534 |
|
|
|
535 |
outline->n_contours++;
|
|
|
536 |
}
|
|
|
537 |
|
|
|
538 |
return error;
|
|
|
539 |
}
|
|
|
540 |
|
|
|
541 |
|
|
|
542 |
/* if a path was begun, add its first on-curve point */
|
|
|
543 |
static FT_Error
|
|
|
544 |
cff_builder_start_point( CFF_Builder* builder,
|
|
|
545 |
FT_Pos x,
|
|
|
546 |
FT_Pos y )
|
|
|
547 |
{
|
|
|
548 |
FT_Error error = CFF_Err_Ok;
|
|
|
549 |
|
|
|
550 |
|
|
|
551 |
/* test whether we are building a new contour */
|
|
|
552 |
if ( !builder->path_begun )
|
|
|
553 |
{
|
|
|
554 |
builder->path_begun = 1;
|
|
|
555 |
error = cff_builder_add_contour( builder );
|
|
|
556 |
if ( !error )
|
|
|
557 |
error = cff_builder_add_point1( builder, x, y );
|
|
|
558 |
}
|
|
|
559 |
|
|
|
560 |
return error;
|
|
|
561 |
}
|
|
|
562 |
|
|
|
563 |
|
|
|
564 |
/* close the current contour */
|
|
|
565 |
static void
|
|
|
566 |
cff_builder_close_contour( CFF_Builder* builder )
|
|
|
567 |
{
|
|
|
568 |
FT_Outline* outline = builder->current;
|
|
|
569 |
FT_Int first;
|
|
|
570 |
|
|
|
571 |
|
|
|
572 |
if ( !outline )
|
|
|
573 |
return;
|
|
|
574 |
|
|
|
575 |
first = outline->n_contours <= 1
|
|
|
576 |
? 0 : outline->contours[outline->n_contours - 2] + 1;
|
|
|
577 |
|
|
|
578 |
/* We must not include the last point in the path if it */
|
|
|
579 |
/* is located on the first point. */
|
|
|
580 |
if ( outline->n_points > 1 )
|
|
|
581 |
{
|
|
|
582 |
FT_Vector* p1 = outline->points + first;
|
|
|
583 |
FT_Vector* p2 = outline->points + outline->n_points - 1;
|
|
|
584 |
FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points - 1;
|
|
|
585 |
|
|
|
586 |
|
|
|
587 |
/* `delete' last point only if it coincides with the first */
|
|
|
588 |
/* point and if it is not a control point (which can happen). */
|
|
|
589 |
if ( p1->x == p2->x && p1->y == p2->y )
|
|
|
590 |
if ( *control == FT_CURVE_TAG_ON )
|
|
|
591 |
outline->n_points--;
|
|
|
592 |
}
|
|
|
593 |
|
|
|
594 |
if ( outline->n_contours > 0 )
|
|
|
595 |
{
|
|
|
596 |
/* Don't add contours only consisting of one point, i.e., */
|
|
|
597 |
/* check whether begin point and last point are the same. */
|
|
|
598 |
if ( first == outline->n_points - 1 )
|
|
|
599 |
{
|
|
|
600 |
outline->n_contours--;
|
|
|
601 |
outline->n_points--;
|
|
|
602 |
}
|
|
|
603 |
else
|
|
|
604 |
outline->contours[outline->n_contours - 1] =
|
|
|
605 |
(short)( outline->n_points - 1 );
|
|
|
606 |
}
|
|
|
607 |
}
|
|
|
608 |
|
|
|
609 |
|
|
|
610 |
static FT_Int
|
|
|
611 |
cff_lookup_glyph_by_stdcharcode( CFF_Font cff,
|
|
|
612 |
FT_Int charcode )
|
|
|
613 |
{
|
|
|
614 |
FT_UInt n;
|
|
|
615 |
FT_UShort glyph_sid;
|
|
|
616 |
|
|
|
617 |
|
|
|
618 |
/* CID-keyed fonts don't have glyph names */
|
|
|
619 |
if ( !cff->charset.sids )
|
|
|
620 |
return -1;
|
|
|
621 |
|
|
|
622 |
/* check range of standard char code */
|
|
|
623 |
if ( charcode < 0 || charcode > 255 )
|
|
|
624 |
return -1;
|
|
|
625 |
|
|
|
626 |
/* Get code to SID mapping from `cff_standard_encoding'. */
|
|
|
627 |
glyph_sid = cff_get_standard_encoding( (FT_UInt)charcode );
|
|
|
628 |
|
|
|
629 |
for ( n = 0; n < cff->num_glyphs; n++ )
|
|
|
630 |
{
|
|
|
631 |
if ( cff->charset.sids[n] == glyph_sid )
|
|
|
632 |
return n;
|
|
|
633 |
}
|
|
|
634 |
|
|
|
635 |
return -1;
|
|
|
636 |
}
|
|
|
637 |
|
|
|
638 |
|
|
|
639 |
static FT_Error
|
|
|
640 |
cff_get_glyph_data( TT_Face face,
|
|
|
641 |
FT_UInt glyph_index,
|
|
|
642 |
FT_Byte** pointer,
|
|
|
643 |
FT_ULong* length )
|
|
|
644 |
{
|
|
|
645 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
646 |
/* For incremental fonts get the character data using the */
|
|
|
647 |
/* callback function. */
|
|
|
648 |
if ( face->root.internal->incremental_interface )
|
|
|
649 |
{
|
|
|
650 |
FT_Data data;
|
|
|
651 |
FT_Error error =
|
|
|
652 |
face->root.internal->incremental_interface->funcs->get_glyph_data(
|
|
|
653 |
face->root.internal->incremental_interface->object,
|
|
|
654 |
glyph_index, &data );
|
|
|
655 |
|
|
|
656 |
|
|
|
657 |
*pointer = (FT_Byte*)data.pointer;
|
|
|
658 |
*length = data.length;
|
|
|
659 |
|
|
|
660 |
return error;
|
|
|
661 |
}
|
|
|
662 |
else
|
|
|
663 |
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
|
|
|
664 |
|
|
|
665 |
{
|
|
|
666 |
CFF_Font cff = (CFF_Font)(face->extra.data);
|
|
|
667 |
|
|
|
668 |
|
|
|
669 |
return cff_index_access_element( &cff->charstrings_index, glyph_index,
|
|
|
670 |
pointer, length );
|
|
|
671 |
}
|
|
|
672 |
}
|
|
|
673 |
|
|
|
674 |
|
|
|
675 |
static void
|
|
|
676 |
cff_free_glyph_data( TT_Face face,
|
|
|
677 |
FT_Byte** pointer,
|
|
|
678 |
FT_ULong length )
|
|
|
679 |
{
|
|
|
680 |
#ifndef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
681 |
FT_UNUSED( length );
|
|
|
682 |
#endif
|
|
|
683 |
|
|
|
684 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
685 |
/* For incremental fonts get the character data using the */
|
|
|
686 |
/* callback function. */
|
|
|
687 |
if ( face->root.internal->incremental_interface )
|
|
|
688 |
{
|
|
|
689 |
FT_Data data;
|
|
|
690 |
|
|
|
691 |
|
|
|
692 |
data.pointer = *pointer;
|
|
|
693 |
data.length = length;
|
|
|
694 |
|
|
|
695 |
face->root.internal->incremental_interface->funcs->free_glyph_data(
|
|
|
696 |
face->root.internal->incremental_interface->object, &data );
|
|
|
697 |
}
|
|
|
698 |
else
|
|
|
699 |
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
|
|
|
700 |
|
|
|
701 |
{
|
|
|
702 |
CFF_Font cff = (CFF_Font)(face->extra.data);
|
|
|
703 |
|
|
|
704 |
|
|
|
705 |
cff_index_forget_element( &cff->charstrings_index, pointer );
|
|
|
706 |
}
|
|
|
707 |
}
|
|
|
708 |
|
|
|
709 |
|
|
|
710 |
static FT_Error
|
|
|
711 |
cff_operator_seac( CFF_Decoder* decoder,
|
|
|
712 |
FT_Pos asb,
|
|
|
713 |
FT_Pos adx,
|
|
|
714 |
FT_Pos ady,
|
|
|
715 |
FT_Int bchar,
|
|
|
716 |
FT_Int achar )
|
|
|
717 |
{
|
|
|
718 |
FT_Error error;
|
|
|
719 |
CFF_Builder* builder = &decoder->builder;
|
|
|
720 |
FT_Int bchar_index, achar_index;
|
|
|
721 |
TT_Face face = decoder->builder.face;
|
|
|
722 |
FT_Vector left_bearing, advance;
|
|
|
723 |
FT_Byte* charstring;
|
|
|
724 |
FT_ULong charstring_len;
|
|
|
725 |
FT_Pos glyph_width;
|
|
|
726 |
|
|
|
727 |
|
|
|
728 |
if ( decoder->seac )
|
|
|
729 |
{
|
|
|
730 |
FT_ERROR(( "cff_operator_seac: invalid nested seac\n" ));
|
|
|
731 |
return CFF_Err_Syntax_Error;
|
|
|
732 |
}
|
|
|
733 |
|
|
|
734 |
adx += decoder->builder.left_bearing.x;
|
|
|
735 |
ady += decoder->builder.left_bearing.y;
|
|
|
736 |
|
|
|
737 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
738 |
/* Incremental fonts don't necessarily have valid charsets. */
|
|
|
739 |
/* They use the character code, not the glyph index, in this case. */
|
|
|
740 |
if ( face->root.internal->incremental_interface )
|
|
|
741 |
{
|
|
|
742 |
bchar_index = bchar;
|
|
|
743 |
achar_index = achar;
|
|
|
744 |
}
|
|
|
745 |
else
|
|
|
746 |
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
|
|
|
747 |
{
|
|
|
748 |
CFF_Font cff = (CFF_Font)(face->extra.data);
|
|
|
749 |
|
|
|
750 |
|
|
|
751 |
bchar_index = cff_lookup_glyph_by_stdcharcode( cff, bchar );
|
|
|
752 |
achar_index = cff_lookup_glyph_by_stdcharcode( cff, achar );
|
|
|
753 |
}
|
|
|
754 |
|
|
|
755 |
if ( bchar_index < 0 || achar_index < 0 )
|
|
|
756 |
{
|
|
|
757 |
FT_ERROR(( "cff_operator_seac:"
|
|
|
758 |
" invalid seac character code arguments\n" ));
|
|
|
759 |
return CFF_Err_Syntax_Error;
|
|
|
760 |
}
|
|
|
761 |
|
|
|
762 |
/* If we are trying to load a composite glyph, do not load the */
|
|
|
763 |
/* accent character and return the array of subglyphs. */
|
|
|
764 |
if ( builder->no_recurse )
|
|
|
765 |
{
|
|
|
766 |
FT_GlyphSlot glyph = (FT_GlyphSlot)builder->glyph;
|
|
|
767 |
FT_GlyphLoader loader = glyph->internal->loader;
|
|
|
768 |
FT_SubGlyph subg;
|
|
|
769 |
|
|
|
770 |
|
|
|
771 |
/* reallocate subglyph array if necessary */
|
|
|
772 |
error = FT_GlyphLoader_CheckSubGlyphs( loader, 2 );
|
|
|
773 |
if ( error )
|
|
|
774 |
goto Exit;
|
|
|
775 |
|
|
|
776 |
subg = loader->current.subglyphs;
|
|
|
777 |
|
|
|
778 |
/* subglyph 0 = base character */
|
|
|
779 |
subg->index = bchar_index;
|
|
|
780 |
subg->flags = FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES |
|
|
|
781 |
FT_SUBGLYPH_FLAG_USE_MY_METRICS;
|
|
|
782 |
subg->arg1 = 0;
|
|
|
783 |
subg->arg2 = 0;
|
|
|
784 |
subg++;
|
|
|
785 |
|
|
|
786 |
/* subglyph 1 = accent character */
|
|
|
787 |
subg->index = achar_index;
|
|
|
788 |
subg->flags = FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES;
|
|
|
789 |
subg->arg1 = (FT_Int)( adx >> 16 );
|
|
|
790 |
subg->arg2 = (FT_Int)( ady >> 16 );
|
|
|
791 |
|
|
|
792 |
/* set up remaining glyph fields */
|
|
|
793 |
glyph->num_subglyphs = 2;
|
|
|
794 |
glyph->subglyphs = loader->base.subglyphs;
|
|
|
795 |
glyph->format = FT_GLYPH_FORMAT_COMPOSITE;
|
|
|
796 |
|
|
|
797 |
loader->current.num_subglyphs = 2;
|
|
|
798 |
}
|
|
|
799 |
|
|
|
800 |
FT_GlyphLoader_Prepare( builder->loader );
|
|
|
801 |
|
|
|
802 |
/* First load `bchar' in builder */
|
|
|
803 |
error = cff_get_glyph_data( face, bchar_index,
|
|
|
804 |
&charstring, &charstring_len );
|
|
|
805 |
if ( !error )
|
|
|
806 |
{
|
|
|
807 |
/* the seac operator must not be nested */
|
|
|
808 |
decoder->seac = TRUE;
|
|
|
809 |
error = cff_decoder_parse_charstrings( decoder, charstring,
|
|
|
810 |
charstring_len );
|
|
|
811 |
decoder->seac = FALSE;
|
|
|
812 |
|
|
|
813 |
cff_free_glyph_data( face, &charstring, charstring_len );
|
|
|
814 |
|
|
|
815 |
if ( error )
|
|
|
816 |
goto Exit;
|
|
|
817 |
}
|
|
|
818 |
|
|
|
819 |
/* Save the left bearing, advance and glyph width of the base */
|
|
|
820 |
/* character as they will be erased by the next load. */
|
|
|
821 |
|
|
|
822 |
left_bearing = builder->left_bearing;
|
|
|
823 |
advance = builder->advance;
|
|
|
824 |
glyph_width = decoder->glyph_width;
|
|
|
825 |
|
|
|
826 |
builder->left_bearing.x = 0;
|
|
|
827 |
builder->left_bearing.y = 0;
|
|
|
828 |
|
|
|
829 |
builder->pos_x = adx - asb;
|
|
|
830 |
builder->pos_y = ady;
|
|
|
831 |
|
|
|
832 |
/* Now load `achar' on top of the base outline. */
|
|
|
833 |
error = cff_get_glyph_data( face, achar_index,
|
|
|
834 |
&charstring, &charstring_len );
|
|
|
835 |
if ( !error )
|
|
|
836 |
{
|
|
|
837 |
/* the seac operator must not be nested */
|
|
|
838 |
decoder->seac = TRUE;
|
|
|
839 |
error = cff_decoder_parse_charstrings( decoder, charstring,
|
|
|
840 |
charstring_len );
|
|
|
841 |
decoder->seac = FALSE;
|
|
|
842 |
|
|
|
843 |
cff_free_glyph_data( face, &charstring, charstring_len );
|
|
|
844 |
|
|
|
845 |
if ( error )
|
|
|
846 |
goto Exit;
|
|
|
847 |
}
|
|
|
848 |
|
|
|
849 |
/* Restore the left side bearing, advance and glyph width */
|
|
|
850 |
/* of the base character. */
|
|
|
851 |
builder->left_bearing = left_bearing;
|
|
|
852 |
builder->advance = advance;
|
|
|
853 |
decoder->glyph_width = glyph_width;
|
|
|
854 |
|
|
|
855 |
builder->pos_x = 0;
|
|
|
856 |
builder->pos_y = 0;
|
|
|
857 |
|
|
|
858 |
Exit:
|
|
|
859 |
return error;
|
|
|
860 |
}
|
|
|
861 |
|
|
|
862 |
|
|
|
863 |
/*************************************************************************/
|
|
|
864 |
/* */
|
|
|
865 |
/* <Function> */
|
|
|
866 |
/* cff_decoder_parse_charstrings */
|
|
|
867 |
/* */
|
|
|
868 |
/* <Description> */
|
|
|
869 |
/* Parses a given Type 2 charstrings program. */
|
|
|
870 |
/* */
|
|
|
871 |
/* <InOut> */
|
|
|
872 |
/* decoder :: The current Type 1 decoder. */
|
|
|
873 |
/* */
|
|
|
874 |
/* <Input> */
|
|
|
875 |
/* charstring_base :: The base of the charstring stream. */
|
|
|
876 |
/* */
|
|
|
877 |
/* charstring_len :: The length in bytes of the charstring stream. */
|
|
|
878 |
/* */
|
|
|
879 |
/* <Return> */
|
|
|
880 |
/* FreeType error code. 0 means success. */
|
|
|
881 |
/* */
|
|
|
882 |
FT_LOCAL_DEF( FT_Error )
|
|
|
883 |
cff_decoder_parse_charstrings( CFF_Decoder* decoder,
|
|
|
884 |
FT_Byte* charstring_base,
|
|
|
885 |
FT_ULong charstring_len )
|
|
|
886 |
{
|
|
|
887 |
FT_Error error;
|
|
|
888 |
CFF_Decoder_Zone* zone;
|
|
|
889 |
FT_Byte* ip;
|
|
|
890 |
FT_Byte* limit;
|
|
|
891 |
CFF_Builder* builder = &decoder->builder;
|
|
|
892 |
FT_Pos x, y;
|
|
|
893 |
FT_Fixed seed;
|
|
|
894 |
FT_Fixed* stack;
|
|
|
895 |
FT_Int charstring_type =
|
|
|
896 |
decoder->cff->top_font.font_dict.charstring_type;
|
|
|
897 |
|
|
|
898 |
T2_Hints_Funcs hinter;
|
|
|
899 |
|
|
|
900 |
|
|
|
901 |
/* set default width */
|
|
|
902 |
decoder->num_hints = 0;
|
|
|
903 |
decoder->read_width = 1;
|
|
|
904 |
|
|
|
905 |
/* compute random seed from stack address of parameter */
|
|
|
906 |
seed = (FT_Fixed)( ( (FT_PtrDist)(char*)&seed ^
|
|
|
907 |
(FT_PtrDist)(char*)&decoder ^
|
|
|
908 |
(FT_PtrDist)(char*)&charstring_base ) &
|
|
|
909 |
FT_ULONG_MAX ) ;
|
|
|
910 |
seed = ( seed ^ ( seed >> 10 ) ^ ( seed >> 20 ) ) & 0xFFFFL;
|
|
|
911 |
if ( seed == 0 )
|
|
|
912 |
seed = 0x7384;
|
|
|
913 |
|
|
|
914 |
/* initialize the decoder */
|
|
|
915 |
decoder->top = decoder->stack;
|
|
|
916 |
decoder->zone = decoder->zones;
|
|
|
917 |
zone = decoder->zones;
|
|
|
918 |
stack = decoder->top;
|
|
|
919 |
|
|
|
920 |
hinter = (T2_Hints_Funcs)builder->hints_funcs;
|
|
|
921 |
|
|
|
922 |
builder->path_begun = 0;
|
|
|
923 |
|
|
|
924 |
zone->base = charstring_base;
|
|
|
925 |
limit = zone->limit = charstring_base + charstring_len;
|
|
|
926 |
ip = zone->cursor = zone->base;
|
|
|
927 |
|
|
|
928 |
error = CFF_Err_Ok;
|
|
|
929 |
|
|
|
930 |
x = builder->pos_x;
|
|
|
931 |
y = builder->pos_y;
|
|
|
932 |
|
|
|
933 |
/* begin hints recording session, if any */
|
|
|
934 |
if ( hinter )
|
|
|
935 |
hinter->open( hinter->hints );
|
|
|
936 |
|
|
|
937 |
/* now execute loop */
|
|
|
938 |
while ( ip < limit )
|
|
|
939 |
{
|
|
|
940 |
CFF_Operator op;
|
|
|
941 |
FT_Byte v;
|
|
|
942 |
|
|
|
943 |
|
|
|
944 |
/********************************************************************/
|
|
|
945 |
/* */
|
|
|
946 |
/* Decode operator or operand */
|
|
|
947 |
/* */
|
|
|
948 |
v = *ip++;
|
|
|
949 |
if ( v >= 32 || v == 28 )
|
|
|
950 |
{
|
|
|
951 |
FT_Int shift = 16;
|
|
|
952 |
FT_Int32 val;
|
|
|
953 |
|
|
|
954 |
|
|
|
955 |
/* this is an operand, push it on the stack */
|
|
|
956 |
if ( v == 28 )
|
|
|
957 |
{
|
|
|
958 |
if ( ip + 1 >= limit )
|
|
|
959 |
goto Syntax_Error;
|
|
|
960 |
val = (FT_Short)( ( (FT_Short)ip[0] << 8 ) | ip[1] );
|
|
|
961 |
ip += 2;
|
|
|
962 |
}
|
|
|
963 |
else if ( v < 247 )
|
|
|
964 |
val = (FT_Int32)v - 139;
|
|
|
965 |
else if ( v < 251 )
|
|
|
966 |
{
|
|
|
967 |
if ( ip >= limit )
|
|
|
968 |
goto Syntax_Error;
|
|
|
969 |
val = ( (FT_Int32)v - 247 ) * 256 + *ip++ + 108;
|
|
|
970 |
}
|
|
|
971 |
else if ( v < 255 )
|
|
|
972 |
{
|
|
|
973 |
if ( ip >= limit )
|
|
|
974 |
goto Syntax_Error;
|
|
|
975 |
val = -( (FT_Int32)v - 251 ) * 256 - *ip++ - 108;
|
|
|
976 |
}
|
|
|
977 |
else
|
|
|
978 |
{
|
|
|
979 |
if ( ip + 3 >= limit )
|
|
|
980 |
goto Syntax_Error;
|
|
|
981 |
val = ( (FT_Int32)ip[0] << 24 ) |
|
|
|
982 |
( (FT_Int32)ip[1] << 16 ) |
|
|
|
983 |
( (FT_Int32)ip[2] << 8 ) |
|
|
|
984 |
ip[3];
|
|
|
985 |
ip += 4;
|
|
|
986 |
if ( charstring_type == 2 )
|
|
|
987 |
shift = 0;
|
|
|
988 |
}
|
|
|
989 |
if ( decoder->top - stack >= CFF_MAX_OPERANDS )
|
|
|
990 |
goto Stack_Overflow;
|
|
|
991 |
|
|
|
992 |
val <<= shift;
|
|
|
993 |
*decoder->top++ = val;
|
|
|
994 |
|
|
|
995 |
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
|
996 |
if ( !( val & 0xFFFFL ) )
|
|
|
997 |
FT_TRACE4(( " %ld", (FT_Int32)( val >> 16 ) ));
|
|
|
998 |
else
|
|
|
999 |
FT_TRACE4(( " %.2f", val / 65536.0 ));
|
|
|
1000 |
#endif
|
|
|
1001 |
|
|
|
1002 |
}
|
|
|
1003 |
else
|
|
|
1004 |
{
|
|
|
1005 |
/* The specification says that normally arguments are to be taken */
|
|
|
1006 |
/* from the bottom of the stack. However, this seems not to be */
|
|
|
1007 |
/* correct, at least for Acroread 7.0.8 on GNU/Linux: It pops the */
|
|
|
1008 |
/* arguments similar to a PS interpreter. */
|
|
|
1009 |
|
|
|
1010 |
FT_Fixed* args = decoder->top;
|
|
|
1011 |
FT_Int num_args = (FT_Int)( args - decoder->stack );
|
|
|
1012 |
FT_Int req_args;
|
|
|
1013 |
|
|
|
1014 |
|
|
|
1015 |
/* find operator */
|
|
|
1016 |
op = cff_op_unknown;
|
|
|
1017 |
|
|
|
1018 |
switch ( v )
|
|
|
1019 |
{
|
|
|
1020 |
case 1:
|
|
|
1021 |
op = cff_op_hstem;
|
|
|
1022 |
break;
|
|
|
1023 |
case 3:
|
|
|
1024 |
op = cff_op_vstem;
|
|
|
1025 |
break;
|
|
|
1026 |
case 4:
|
|
|
1027 |
op = cff_op_vmoveto;
|
|
|
1028 |
break;
|
|
|
1029 |
case 5:
|
|
|
1030 |
op = cff_op_rlineto;
|
|
|
1031 |
break;
|
|
|
1032 |
case 6:
|
|
|
1033 |
op = cff_op_hlineto;
|
|
|
1034 |
break;
|
|
|
1035 |
case 7:
|
|
|
1036 |
op = cff_op_vlineto;
|
|
|
1037 |
break;
|
|
|
1038 |
case 8:
|
|
|
1039 |
op = cff_op_rrcurveto;
|
|
|
1040 |
break;
|
|
|
1041 |
case 9:
|
|
|
1042 |
op = cff_op_closepath;
|
|
|
1043 |
break;
|
|
|
1044 |
case 10:
|
|
|
1045 |
op = cff_op_callsubr;
|
|
|
1046 |
break;
|
|
|
1047 |
case 11:
|
|
|
1048 |
op = cff_op_return;
|
|
|
1049 |
break;
|
|
|
1050 |
case 12:
|
|
|
1051 |
{
|
|
|
1052 |
if ( ip >= limit )
|
|
|
1053 |
goto Syntax_Error;
|
|
|
1054 |
v = *ip++;
|
|
|
1055 |
|
|
|
1056 |
switch ( v )
|
|
|
1057 |
{
|
|
|
1058 |
case 0:
|
|
|
1059 |
op = cff_op_dotsection;
|
|
|
1060 |
break;
|
|
|
1061 |
case 1: /* this is actually the Type1 vstem3 operator */
|
|
|
1062 |
op = cff_op_vstem;
|
|
|
1063 |
break;
|
|
|
1064 |
case 2: /* this is actually the Type1 hstem3 operator */
|
|
|
1065 |
op = cff_op_hstem;
|
|
|
1066 |
break;
|
|
|
1067 |
case 3:
|
|
|
1068 |
op = cff_op_and;
|
|
|
1069 |
break;
|
|
|
1070 |
case 4:
|
|
|
1071 |
op = cff_op_or;
|
|
|
1072 |
break;
|
|
|
1073 |
case 5:
|
|
|
1074 |
op = cff_op_not;
|
|
|
1075 |
break;
|
|
|
1076 |
case 6:
|
|
|
1077 |
op = cff_op_seac;
|
|
|
1078 |
break;
|
|
|
1079 |
case 7:
|
|
|
1080 |
op = cff_op_sbw;
|
|
|
1081 |
break;
|
|
|
1082 |
case 8:
|
|
|
1083 |
op = cff_op_store;
|
|
|
1084 |
break;
|
|
|
1085 |
case 9:
|
|
|
1086 |
op = cff_op_abs;
|
|
|
1087 |
break;
|
|
|
1088 |
case 10:
|
|
|
1089 |
op = cff_op_add;
|
|
|
1090 |
break;
|
|
|
1091 |
case 11:
|
|
|
1092 |
op = cff_op_sub;
|
|
|
1093 |
break;
|
|
|
1094 |
case 12:
|
|
|
1095 |
op = cff_op_div;
|
|
|
1096 |
break;
|
|
|
1097 |
case 13:
|
|
|
1098 |
op = cff_op_load;
|
|
|
1099 |
break;
|
|
|
1100 |
case 14:
|
|
|
1101 |
op = cff_op_neg;
|
|
|
1102 |
break;
|
|
|
1103 |
case 15:
|
|
|
1104 |
op = cff_op_eq;
|
|
|
1105 |
break;
|
|
|
1106 |
case 16:
|
|
|
1107 |
op = cff_op_callothersubr;
|
|
|
1108 |
break;
|
|
|
1109 |
case 17:
|
|
|
1110 |
op = cff_op_pop;
|
|
|
1111 |
break;
|
|
|
1112 |
case 18:
|
|
|
1113 |
op = cff_op_drop;
|
|
|
1114 |
break;
|
|
|
1115 |
case 20:
|
|
|
1116 |
op = cff_op_put;
|
|
|
1117 |
break;
|
|
|
1118 |
case 21:
|
|
|
1119 |
op = cff_op_get;
|
|
|
1120 |
break;
|
|
|
1121 |
case 22:
|
|
|
1122 |
op = cff_op_ifelse;
|
|
|
1123 |
break;
|
|
|
1124 |
case 23:
|
|
|
1125 |
op = cff_op_random;
|
|
|
1126 |
break;
|
|
|
1127 |
case 24:
|
|
|
1128 |
op = cff_op_mul;
|
|
|
1129 |
break;
|
|
|
1130 |
case 26:
|
|
|
1131 |
op = cff_op_sqrt;
|
|
|
1132 |
break;
|
|
|
1133 |
case 27:
|
|
|
1134 |
op = cff_op_dup;
|
|
|
1135 |
break;
|
|
|
1136 |
case 28:
|
|
|
1137 |
op = cff_op_exch;
|
|
|
1138 |
break;
|
|
|
1139 |
case 29:
|
|
|
1140 |
op = cff_op_index;
|
|
|
1141 |
break;
|
|
|
1142 |
case 30:
|
|
|
1143 |
op = cff_op_roll;
|
|
|
1144 |
break;
|
|
|
1145 |
case 33:
|
|
|
1146 |
op = cff_op_setcurrentpoint;
|
|
|
1147 |
break;
|
|
|
1148 |
case 34:
|
|
|
1149 |
op = cff_op_hflex;
|
|
|
1150 |
break;
|
|
|
1151 |
case 35:
|
|
|
1152 |
op = cff_op_flex;
|
|
|
1153 |
break;
|
|
|
1154 |
case 36:
|
|
|
1155 |
op = cff_op_hflex1;
|
|
|
1156 |
break;
|
|
|
1157 |
case 37:
|
|
|
1158 |
op = cff_op_flex1;
|
|
|
1159 |
break;
|
|
|
1160 |
default:
|
|
|
1161 |
FT_TRACE4(( " unknown op (12, %d)\n", v ));
|
|
|
1162 |
break;
|
|
|
1163 |
}
|
|
|
1164 |
}
|
|
|
1165 |
break;
|
|
|
1166 |
case 13:
|
|
|
1167 |
op = cff_op_hsbw;
|
|
|
1168 |
break;
|
|
|
1169 |
case 14:
|
|
|
1170 |
op = cff_op_endchar;
|
|
|
1171 |
break;
|
|
|
1172 |
case 16:
|
|
|
1173 |
op = cff_op_blend;
|
|
|
1174 |
break;
|
|
|
1175 |
case 18:
|
|
|
1176 |
op = cff_op_hstemhm;
|
|
|
1177 |
break;
|
|
|
1178 |
case 19:
|
|
|
1179 |
op = cff_op_hintmask;
|
|
|
1180 |
break;
|
|
|
1181 |
case 20:
|
|
|
1182 |
op = cff_op_cntrmask;
|
|
|
1183 |
break;
|
|
|
1184 |
case 21:
|
|
|
1185 |
op = cff_op_rmoveto;
|
|
|
1186 |
break;
|
|
|
1187 |
case 22:
|
|
|
1188 |
op = cff_op_hmoveto;
|
|
|
1189 |
break;
|
|
|
1190 |
case 23:
|
|
|
1191 |
op = cff_op_vstemhm;
|
|
|
1192 |
break;
|
|
|
1193 |
case 24:
|
|
|
1194 |
op = cff_op_rcurveline;
|
|
|
1195 |
break;
|
|
|
1196 |
case 25:
|
|
|
1197 |
op = cff_op_rlinecurve;
|
|
|
1198 |
break;
|
|
|
1199 |
case 26:
|
|
|
1200 |
op = cff_op_vvcurveto;
|
|
|
1201 |
break;
|
|
|
1202 |
case 27:
|
|
|
1203 |
op = cff_op_hhcurveto;
|
|
|
1204 |
break;
|
|
|
1205 |
case 29:
|
|
|
1206 |
op = cff_op_callgsubr;
|
|
|
1207 |
break;
|
|
|
1208 |
case 30:
|
|
|
1209 |
op = cff_op_vhcurveto;
|
|
|
1210 |
break;
|
|
|
1211 |
case 31:
|
|
|
1212 |
op = cff_op_hvcurveto;
|
|
|
1213 |
break;
|
|
|
1214 |
default:
|
|
|
1215 |
FT_TRACE4(( " unknown op (%d)\n", v ));
|
|
|
1216 |
break;
|
|
|
1217 |
}
|
|
|
1218 |
|
|
|
1219 |
if ( op == cff_op_unknown )
|
|
|
1220 |
continue;
|
|
|
1221 |
|
|
|
1222 |
/* check arguments */
|
|
|
1223 |
req_args = cff_argument_counts[op];
|
|
|
1224 |
if ( req_args & CFF_COUNT_CHECK_WIDTH )
|
|
|
1225 |
{
|
|
|
1226 |
if ( num_args > 0 && decoder->read_width )
|
|
|
1227 |
{
|
|
|
1228 |
/* If `nominal_width' is non-zero, the number is really a */
|
|
|
1229 |
/* difference against `nominal_width'. Else, the number here */
|
|
|
1230 |
/* is truly a width, not a difference against `nominal_width'. */
|
|
|
1231 |
/* If the font does not set `nominal_width', then */
|
|
|
1232 |
/* `nominal_width' defaults to zero, and so we can set */
|
|
|
1233 |
/* `glyph_width' to `nominal_width' plus number on the stack */
|
|
|
1234 |
/* -- for either case. */
|
|
|
1235 |
|
|
|
1236 |
FT_Int set_width_ok;
|
|
|
1237 |
|
|
|
1238 |
|
|
|
1239 |
switch ( op )
|
|
|
1240 |
{
|
|
|
1241 |
case cff_op_hmoveto:
|
|
|
1242 |
case cff_op_vmoveto:
|
|
|
1243 |
set_width_ok = num_args & 2;
|
|
|
1244 |
break;
|
|
|
1245 |
|
|
|
1246 |
case cff_op_hstem:
|
|
|
1247 |
case cff_op_vstem:
|
|
|
1248 |
case cff_op_hstemhm:
|
|
|
1249 |
case cff_op_vstemhm:
|
|
|
1250 |
case cff_op_rmoveto:
|
|
|
1251 |
case cff_op_hintmask:
|
|
|
1252 |
case cff_op_cntrmask:
|
|
|
1253 |
set_width_ok = num_args & 1;
|
|
|
1254 |
break;
|
|
|
1255 |
|
|
|
1256 |
case cff_op_endchar:
|
|
|
1257 |
/* If there is a width specified for endchar, we either have */
|
|
|
1258 |
/* 1 argument or 5 arguments. We like to argue. */
|
|
|
1259 |
set_width_ok = ( num_args == 5 ) || ( num_args == 1 );
|
|
|
1260 |
break;
|
|
|
1261 |
|
|
|
1262 |
default:
|
|
|
1263 |
set_width_ok = 0;
|
|
|
1264 |
break;
|
|
|
1265 |
}
|
|
|
1266 |
|
|
|
1267 |
if ( set_width_ok )
|
|
|
1268 |
{
|
|
|
1269 |
decoder->glyph_width = decoder->nominal_width +
|
|
|
1270 |
( stack[0] >> 16 );
|
|
|
1271 |
|
|
|
1272 |
if ( decoder->width_only )
|
|
|
1273 |
{
|
|
|
1274 |
/* we only want the advance width; stop here */
|
|
|
1275 |
break;
|
|
|
1276 |
}
|
|
|
1277 |
|
|
|
1278 |
/* Consumed an argument. */
|
|
|
1279 |
num_args--;
|
|
|
1280 |
}
|
|
|
1281 |
}
|
|
|
1282 |
|
|
|
1283 |
decoder->read_width = 0;
|
|
|
1284 |
req_args = 0;
|
|
|
1285 |
}
|
|
|
1286 |
|
|
|
1287 |
req_args &= 0x000F;
|
|
|
1288 |
if ( num_args < req_args )
|
|
|
1289 |
goto Stack_Underflow;
|
|
|
1290 |
args -= req_args;
|
|
|
1291 |
num_args -= req_args;
|
|
|
1292 |
|
|
|
1293 |
/* At this point, `args' points to the first argument of the */
|
|
|
1294 |
/* operand in case `req_args' isn't zero. Otherwise, we have */
|
|
|
1295 |
/* to adjust `args' manually. */
|
|
|
1296 |
|
|
|
1297 |
/* Note that we only pop arguments from the stack which we */
|
|
|
1298 |
/* really need and can digest so that we can continue in case */
|
|
|
1299 |
/* of superfluous stack elements. */
|
|
|
1300 |
|
|
|
1301 |
switch ( op )
|
|
|
1302 |
{
|
|
|
1303 |
case cff_op_hstem:
|
|
|
1304 |
case cff_op_vstem:
|
|
|
1305 |
case cff_op_hstemhm:
|
|
|
1306 |
case cff_op_vstemhm:
|
|
|
1307 |
/* the number of arguments is always even here */
|
|
|
1308 |
FT_TRACE4((
|
|
|
1309 |
op == cff_op_hstem ? " hstem\n" :
|
|
|
1310 |
( op == cff_op_vstem ? " vstem\n" :
|
|
|
1311 |
( op == cff_op_hstemhm ? " hstemhm\n" : " vstemhm\n" ) ) ));
|
|
|
1312 |
|
|
|
1313 |
if ( hinter )
|
|
|
1314 |
hinter->stems( hinter->hints,
|
|
|
1315 |
( op == cff_op_hstem || op == cff_op_hstemhm ),
|
|
|
1316 |
num_args / 2,
|
|
|
1317 |
args - ( num_args & ~1 ) );
|
|
|
1318 |
|
|
|
1319 |
decoder->num_hints += num_args / 2;
|
|
|
1320 |
args = stack;
|
|
|
1321 |
break;
|
|
|
1322 |
|
|
|
1323 |
case cff_op_hintmask:
|
|
|
1324 |
case cff_op_cntrmask:
|
|
|
1325 |
FT_TRACE4(( op == cff_op_hintmask ? " hintmask" : " cntrmask" ));
|
|
|
1326 |
|
|
|
1327 |
/* implement vstem when needed -- */
|
|
|
1328 |
/* the specification doesn't say it, but this also works */
|
|
|
1329 |
/* with the 'cntrmask' operator */
|
|
|
1330 |
/* */
|
|
|
1331 |
if ( num_args > 0 )
|
|
|
1332 |
{
|
|
|
1333 |
if ( hinter )
|
|
|
1334 |
hinter->stems( hinter->hints,
|
|
|
1335 |
0,
|
|
|
1336 |
num_args / 2,
|
|
|
1337 |
args - ( num_args & ~1 ) );
|
|
|
1338 |
|
|
|
1339 |
decoder->num_hints += num_args / 2;
|
|
|
1340 |
}
|
|
|
1341 |
|
|
|
1342 |
/* In a valid charstring there must be at least one byte */
|
|
|
1343 |
/* after `hintmask' or `cntrmask' (e.g., for a `return' */
|
|
|
1344 |
/* instruction). Additionally, there must be space for */
|
|
|
1345 |
/* `num_hints' bits. */
|
|
|
1346 |
|
|
|
1347 |
if ( ( ip + ( ( decoder->num_hints + 7 ) >> 3 ) ) >= limit )
|
|
|
1348 |
goto Syntax_Error;
|
|
|
1349 |
|
|
|
1350 |
if ( hinter )
|
|
|
1351 |
{
|
|
|
1352 |
if ( op == cff_op_hintmask )
|
|
|
1353 |
hinter->hintmask( hinter->hints,
|
|
|
1354 |
builder->current->n_points,
|
|
|
1355 |
decoder->num_hints,
|
|
|
1356 |
ip );
|
|
|
1357 |
else
|
|
|
1358 |
hinter->counter( hinter->hints,
|
|
|
1359 |
decoder->num_hints,
|
|
|
1360 |
ip );
|
|
|
1361 |
}
|
|
|
1362 |
|
|
|
1363 |
#ifdef FT_DEBUG_LEVEL_TRACE
|
|
|
1364 |
{
|
|
|
1365 |
FT_UInt maskbyte;
|
|
|
1366 |
|
|
|
1367 |
|
|
|
1368 |
FT_TRACE4(( " (maskbytes:" ));
|
|
|
1369 |
|
|
|
1370 |
for ( maskbyte = 0;
|
|
|
1371 |
maskbyte < (FT_UInt)( ( decoder->num_hints + 7 ) >> 3 );
|
|
|
1372 |
maskbyte++, ip++ )
|
|
|
1373 |
FT_TRACE4(( " 0x%02X", *ip ));
|
|
|
1374 |
|
|
|
1375 |
FT_TRACE4(( ")\n" ));
|
|
|
1376 |
}
|
|
|
1377 |
#else
|
|
|
1378 |
ip += ( decoder->num_hints + 7 ) >> 3;
|
|
|
1379 |
#endif
|
|
|
1380 |
args = stack;
|
|
|
1381 |
break;
|
|
|
1382 |
|
|
|
1383 |
case cff_op_rmoveto:
|
|
|
1384 |
FT_TRACE4(( " rmoveto\n" ));
|
|
|
1385 |
|
|
|
1386 |
cff_builder_close_contour( builder );
|
|
|
1387 |
builder->path_begun = 0;
|
|
|
1388 |
x += args[-2];
|
|
|
1389 |
y += args[-1];
|
|
|
1390 |
args = stack;
|
|
|
1391 |
break;
|
|
|
1392 |
|
|
|
1393 |
case cff_op_vmoveto:
|
|
|
1394 |
FT_TRACE4(( " vmoveto\n" ));
|
|
|
1395 |
|
|
|
1396 |
cff_builder_close_contour( builder );
|
|
|
1397 |
builder->path_begun = 0;
|
|
|
1398 |
y += args[-1];
|
|
|
1399 |
args = stack;
|
|
|
1400 |
break;
|
|
|
1401 |
|
|
|
1402 |
case cff_op_hmoveto:
|
|
|
1403 |
FT_TRACE4(( " hmoveto\n" ));
|
|
|
1404 |
|
|
|
1405 |
cff_builder_close_contour( builder );
|
|
|
1406 |
builder->path_begun = 0;
|
|
|
1407 |
x += args[-1];
|
|
|
1408 |
args = stack;
|
|
|
1409 |
break;
|
|
|
1410 |
|
|
|
1411 |
case cff_op_rlineto:
|
|
|
1412 |
FT_TRACE4(( " rlineto\n" ));
|
|
|
1413 |
|
|
|
1414 |
if ( cff_builder_start_point ( builder, x, y ) ||
|
|
|
1415 |
check_points( builder, num_args / 2 ) )
|
|
|
1416 |
goto Fail;
|
|
|
1417 |
|
|
|
1418 |
if ( num_args < 2 )
|
|
|
1419 |
goto Stack_Underflow;
|
|
|
1420 |
|
|
|
1421 |
args -= num_args & ~1;
|
|
|
1422 |
while ( args < decoder->top )
|
|
|
1423 |
{
|
|
|
1424 |
x += args[0];
|
|
|
1425 |
y += args[1];
|
|
|
1426 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1427 |
args += 2;
|
|
|
1428 |
}
|
|
|
1429 |
args = stack;
|
|
|
1430 |
break;
|
|
|
1431 |
|
|
|
1432 |
case cff_op_hlineto:
|
|
|
1433 |
case cff_op_vlineto:
|
|
|
1434 |
{
|
|
|
1435 |
FT_Int phase = ( op == cff_op_hlineto );
|
|
|
1436 |
|
|
|
1437 |
|
|
|
1438 |
FT_TRACE4(( op == cff_op_hlineto ? " hlineto\n"
|
|
|
1439 |
: " vlineto\n" ));
|
|
|
1440 |
|
|
|
1441 |
if ( num_args < 0 )
|
|
|
1442 |
goto Stack_Underflow;
|
|
|
1443 |
|
|
|
1444 |
/* there exist subsetted fonts (found in PDFs) */
|
|
|
1445 |
/* which call `hlineto' without arguments */
|
|
|
1446 |
if ( num_args == 0 )
|
|
|
1447 |
break;
|
|
|
1448 |
|
|
|
1449 |
if ( cff_builder_start_point ( builder, x, y ) ||
|
|
|
1450 |
check_points( builder, num_args ) )
|
|
|
1451 |
goto Fail;
|
|
|
1452 |
|
|
|
1453 |
args = stack;
|
|
|
1454 |
while ( args < decoder->top )
|
|
|
1455 |
{
|
|
|
1456 |
if ( phase )
|
|
|
1457 |
x += args[0];
|
|
|
1458 |
else
|
|
|
1459 |
y += args[0];
|
|
|
1460 |
|
|
|
1461 |
if ( cff_builder_add_point1( builder, x, y ) )
|
|
|
1462 |
goto Fail;
|
|
|
1463 |
|
|
|
1464 |
args++;
|
|
|
1465 |
phase ^= 1;
|
|
|
1466 |
}
|
|
|
1467 |
args = stack;
|
|
|
1468 |
}
|
|
|
1469 |
break;
|
|
|
1470 |
|
|
|
1471 |
case cff_op_rrcurveto:
|
|
|
1472 |
{
|
|
|
1473 |
FT_Int nargs;
|
|
|
1474 |
|
|
|
1475 |
|
|
|
1476 |
FT_TRACE4(( " rrcurveto\n" ));
|
|
|
1477 |
|
|
|
1478 |
if ( num_args < 6 )
|
|
|
1479 |
goto Stack_Underflow;
|
|
|
1480 |
|
|
|
1481 |
nargs = num_args - num_args % 6;
|
|
|
1482 |
|
|
|
1483 |
if ( cff_builder_start_point ( builder, x, y ) ||
|
|
|
1484 |
check_points( builder, nargs / 2 ) )
|
|
|
1485 |
goto Fail;
|
|
|
1486 |
|
|
|
1487 |
args -= nargs;
|
|
|
1488 |
while ( args < decoder->top )
|
|
|
1489 |
{
|
|
|
1490 |
x += args[0];
|
|
|
1491 |
y += args[1];
|
|
|
1492 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1493 |
x += args[2];
|
|
|
1494 |
y += args[3];
|
|
|
1495 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1496 |
x += args[4];
|
|
|
1497 |
y += args[5];
|
|
|
1498 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1499 |
args += 6;
|
|
|
1500 |
}
|
|
|
1501 |
args = stack;
|
|
|
1502 |
}
|
|
|
1503 |
break;
|
|
|
1504 |
|
|
|
1505 |
case cff_op_vvcurveto:
|
|
|
1506 |
{
|
|
|
1507 |
FT_Int nargs;
|
|
|
1508 |
|
|
|
1509 |
|
|
|
1510 |
FT_TRACE4(( " vvcurveto\n" ));
|
|
|
1511 |
|
|
|
1512 |
if ( num_args < 4 )
|
|
|
1513 |
goto Stack_Underflow;
|
|
|
1514 |
|
|
|
1515 |
/* if num_args isn't of the form 4n or 4n+1, */
|
|
|
1516 |
/* we reduce it to 4n+1 */
|
|
|
1517 |
|
|
|
1518 |
nargs = num_args - num_args % 4;
|
|
|
1519 |
if ( num_args - nargs > 0 )
|
|
|
1520 |
nargs += 1;
|
|
|
1521 |
|
|
|
1522 |
if ( cff_builder_start_point( builder, x, y ) )
|
|
|
1523 |
goto Fail;
|
|
|
1524 |
|
|
|
1525 |
args -= nargs;
|
|
|
1526 |
|
|
|
1527 |
if ( nargs & 1 )
|
|
|
1528 |
{
|
|
|
1529 |
x += args[0];
|
|
|
1530 |
args++;
|
|
|
1531 |
nargs--;
|
|
|
1532 |
}
|
|
|
1533 |
|
|
|
1534 |
if ( check_points( builder, 3 * ( nargs / 4 ) ) )
|
|
|
1535 |
goto Fail;
|
|
|
1536 |
|
|
|
1537 |
while ( args < decoder->top )
|
|
|
1538 |
{
|
|
|
1539 |
y += args[0];
|
|
|
1540 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1541 |
x += args[1];
|
|
|
1542 |
y += args[2];
|
|
|
1543 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1544 |
y += args[3];
|
|
|
1545 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1546 |
args += 4;
|
|
|
1547 |
}
|
|
|
1548 |
args = stack;
|
|
|
1549 |
}
|
|
|
1550 |
break;
|
|
|
1551 |
|
|
|
1552 |
case cff_op_hhcurveto:
|
|
|
1553 |
{
|
|
|
1554 |
FT_Int nargs;
|
|
|
1555 |
|
|
|
1556 |
|
|
|
1557 |
FT_TRACE4(( " hhcurveto\n" ));
|
|
|
1558 |
|
|
|
1559 |
if ( num_args < 4 )
|
|
|
1560 |
goto Stack_Underflow;
|
|
|
1561 |
|
|
|
1562 |
/* if num_args isn't of the form 4n or 4n+1, */
|
|
|
1563 |
/* we reduce it to 4n+1 */
|
|
|
1564 |
|
|
|
1565 |
nargs = num_args - num_args % 4;
|
|
|
1566 |
if ( num_args - nargs > 0 )
|
|
|
1567 |
nargs += 1;
|
|
|
1568 |
|
|
|
1569 |
if ( cff_builder_start_point( builder, x, y ) )
|
|
|
1570 |
goto Fail;
|
|
|
1571 |
|
|
|
1572 |
args -= nargs;
|
|
|
1573 |
if ( nargs & 1 )
|
|
|
1574 |
{
|
|
|
1575 |
y += args[0];
|
|
|
1576 |
args++;
|
|
|
1577 |
nargs--;
|
|
|
1578 |
}
|
|
|
1579 |
|
|
|
1580 |
if ( check_points( builder, 3 * ( nargs / 4 ) ) )
|
|
|
1581 |
goto Fail;
|
|
|
1582 |
|
|
|
1583 |
while ( args < decoder->top )
|
|
|
1584 |
{
|
|
|
1585 |
x += args[0];
|
|
|
1586 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1587 |
x += args[1];
|
|
|
1588 |
y += args[2];
|
|
|
1589 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1590 |
x += args[3];
|
|
|
1591 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1592 |
args += 4;
|
|
|
1593 |
}
|
|
|
1594 |
args = stack;
|
|
|
1595 |
}
|
|
|
1596 |
break;
|
|
|
1597 |
|
|
|
1598 |
case cff_op_vhcurveto:
|
|
|
1599 |
case cff_op_hvcurveto:
|
|
|
1600 |
{
|
|
|
1601 |
FT_Int phase;
|
|
|
1602 |
FT_Int nargs;
|
|
|
1603 |
|
|
|
1604 |
|
|
|
1605 |
FT_TRACE4(( op == cff_op_vhcurveto ? " vhcurveto\n"
|
|
|
1606 |
: " hvcurveto\n" ));
|
|
|
1607 |
|
|
|
1608 |
if ( cff_builder_start_point( builder, x, y ) )
|
|
|
1609 |
goto Fail;
|
|
|
1610 |
|
|
|
1611 |
if ( num_args < 4 )
|
|
|
1612 |
goto Stack_Underflow;
|
|
|
1613 |
|
|
|
1614 |
/* if num_args isn't of the form 8n, 8n+1, 8n+4, or 8n+5, */
|
|
|
1615 |
/* we reduce it to the largest one which fits */
|
|
|
1616 |
|
|
|
1617 |
nargs = num_args - num_args % 4;
|
|
|
1618 |
if ( num_args - nargs > 0 )
|
|
|
1619 |
nargs += 1;
|
|
|
1620 |
|
|
|
1621 |
args -= nargs;
|
|
|
1622 |
if ( check_points( builder, ( nargs / 4 ) * 3 ) )
|
|
|
1623 |
goto Stack_Underflow;
|
|
|
1624 |
|
|
|
1625 |
phase = ( op == cff_op_hvcurveto );
|
|
|
1626 |
|
|
|
1627 |
while ( nargs >= 4 )
|
|
|
1628 |
{
|
|
|
1629 |
nargs -= 4;
|
|
|
1630 |
if ( phase )
|
|
|
1631 |
{
|
|
|
1632 |
x += args[0];
|
|
|
1633 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1634 |
x += args[1];
|
|
|
1635 |
y += args[2];
|
|
|
1636 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1637 |
y += args[3];
|
|
|
1638 |
if ( nargs == 1 )
|
|
|
1639 |
x += args[4];
|
|
|
1640 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1641 |
}
|
|
|
1642 |
else
|
|
|
1643 |
{
|
|
|
1644 |
y += args[0];
|
|
|
1645 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1646 |
x += args[1];
|
|
|
1647 |
y += args[2];
|
|
|
1648 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1649 |
x += args[3];
|
|
|
1650 |
if ( nargs == 1 )
|
|
|
1651 |
y += args[4];
|
|
|
1652 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1653 |
}
|
|
|
1654 |
args += 4;
|
|
|
1655 |
phase ^= 1;
|
|
|
1656 |
}
|
|
|
1657 |
args = stack;
|
|
|
1658 |
}
|
|
|
1659 |
break;
|
|
|
1660 |
|
|
|
1661 |
case cff_op_rlinecurve:
|
|
|
1662 |
{
|
|
|
1663 |
FT_Int num_lines;
|
|
|
1664 |
FT_Int nargs;
|
|
|
1665 |
|
|
|
1666 |
|
|
|
1667 |
FT_TRACE4(( " rlinecurve\n" ));
|
|
|
1668 |
|
|
|
1669 |
if ( num_args < 8 )
|
|
|
1670 |
goto Stack_Underflow;
|
|
|
1671 |
|
|
|
1672 |
nargs = num_args & ~1;
|
|
|
1673 |
num_lines = ( nargs - 6 ) / 2;
|
|
|
1674 |
|
|
|
1675 |
if ( cff_builder_start_point( builder, x, y ) ||
|
|
|
1676 |
check_points( builder, num_lines + 3 ) )
|
|
|
1677 |
goto Fail;
|
|
|
1678 |
|
|
|
1679 |
args -= nargs;
|
|
|
1680 |
|
|
|
1681 |
/* first, add the line segments */
|
|
|
1682 |
while ( num_lines > 0 )
|
|
|
1683 |
{
|
|
|
1684 |
x += args[0];
|
|
|
1685 |
y += args[1];
|
|
|
1686 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1687 |
args += 2;
|
|
|
1688 |
num_lines--;
|
|
|
1689 |
}
|
|
|
1690 |
|
|
|
1691 |
/* then the curve */
|
|
|
1692 |
x += args[0];
|
|
|
1693 |
y += args[1];
|
|
|
1694 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1695 |
x += args[2];
|
|
|
1696 |
y += args[3];
|
|
|
1697 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1698 |
x += args[4];
|
|
|
1699 |
y += args[5];
|
|
|
1700 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1701 |
args = stack;
|
|
|
1702 |
}
|
|
|
1703 |
break;
|
|
|
1704 |
|
|
|
1705 |
case cff_op_rcurveline:
|
|
|
1706 |
{
|
|
|
1707 |
FT_Int num_curves;
|
|
|
1708 |
FT_Int nargs;
|
|
|
1709 |
|
|
|
1710 |
|
|
|
1711 |
FT_TRACE4(( " rcurveline\n" ));
|
|
|
1712 |
|
|
|
1713 |
if ( num_args < 8 )
|
|
|
1714 |
goto Stack_Underflow;
|
|
|
1715 |
|
|
|
1716 |
nargs = num_args - 2;
|
|
|
1717 |
nargs = nargs - nargs % 6 + 2;
|
|
|
1718 |
num_curves = ( nargs - 2 ) / 6;
|
|
|
1719 |
|
|
|
1720 |
if ( cff_builder_start_point ( builder, x, y ) ||
|
|
|
1721 |
check_points( builder, num_curves * 3 + 2 ) )
|
|
|
1722 |
goto Fail;
|
|
|
1723 |
|
|
|
1724 |
args -= nargs;
|
|
|
1725 |
|
|
|
1726 |
/* first, add the curves */
|
|
|
1727 |
while ( num_curves > 0 )
|
|
|
1728 |
{
|
|
|
1729 |
x += args[0];
|
|
|
1730 |
y += args[1];
|
|
|
1731 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1732 |
x += args[2];
|
|
|
1733 |
y += args[3];
|
|
|
1734 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1735 |
x += args[4];
|
|
|
1736 |
y += args[5];
|
|
|
1737 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1738 |
args += 6;
|
|
|
1739 |
num_curves--;
|
|
|
1740 |
}
|
|
|
1741 |
|
|
|
1742 |
/* then the final line */
|
|
|
1743 |
x += args[0];
|
|
|
1744 |
y += args[1];
|
|
|
1745 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1746 |
args = stack;
|
|
|
1747 |
}
|
|
|
1748 |
break;
|
|
|
1749 |
|
|
|
1750 |
case cff_op_hflex1:
|
|
|
1751 |
{
|
|
|
1752 |
FT_Pos start_y;
|
|
|
1753 |
|
|
|
1754 |
|
|
|
1755 |
FT_TRACE4(( " hflex1\n" ));
|
|
|
1756 |
|
|
|
1757 |
/* adding five more points: 4 control points, 1 on-curve point */
|
|
|
1758 |
/* -- make sure we have enough space for the start point if it */
|
|
|
1759 |
/* needs to be added */
|
|
|
1760 |
if ( cff_builder_start_point( builder, x, y ) ||
|
|
|
1761 |
check_points( builder, 6 ) )
|
|
|
1762 |
goto Fail;
|
|
|
1763 |
|
|
|
1764 |
/* record the starting point's y position for later use */
|
|
|
1765 |
start_y = y;
|
|
|
1766 |
|
|
|
1767 |
/* first control point */
|
|
|
1768 |
x += args[0];
|
|
|
1769 |
y += args[1];
|
|
|
1770 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1771 |
|
|
|
1772 |
/* second control point */
|
|
|
1773 |
x += args[2];
|
|
|
1774 |
y += args[3];
|
|
|
1775 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1776 |
|
|
|
1777 |
/* join point; on curve, with y-value the same as the last */
|
|
|
1778 |
/* control point's y-value */
|
|
|
1779 |
x += args[4];
|
|
|
1780 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1781 |
|
|
|
1782 |
/* third control point, with y-value the same as the join */
|
|
|
1783 |
/* point's y-value */
|
|
|
1784 |
x += args[5];
|
|
|
1785 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1786 |
|
|
|
1787 |
/* fourth control point */
|
|
|
1788 |
x += args[6];
|
|
|
1789 |
y += args[7];
|
|
|
1790 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1791 |
|
|
|
1792 |
/* ending point, with y-value the same as the start */
|
|
|
1793 |
x += args[8];
|
|
|
1794 |
y = start_y;
|
|
|
1795 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1796 |
|
|
|
1797 |
args = stack;
|
|
|
1798 |
break;
|
|
|
1799 |
}
|
|
|
1800 |
|
|
|
1801 |
case cff_op_hflex:
|
|
|
1802 |
{
|
|
|
1803 |
FT_Pos start_y;
|
|
|
1804 |
|
|
|
1805 |
|
|
|
1806 |
FT_TRACE4(( " hflex\n" ));
|
|
|
1807 |
|
|
|
1808 |
/* adding six more points; 4 control points, 2 on-curve points */
|
|
|
1809 |
if ( cff_builder_start_point( builder, x, y ) ||
|
|
|
1810 |
check_points( builder, 6 ) )
|
|
|
1811 |
goto Fail;
|
|
|
1812 |
|
|
|
1813 |
/* record the starting point's y-position for later use */
|
|
|
1814 |
start_y = y;
|
|
|
1815 |
|
|
|
1816 |
/* first control point */
|
|
|
1817 |
x += args[0];
|
|
|
1818 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1819 |
|
|
|
1820 |
/* second control point */
|
|
|
1821 |
x += args[1];
|
|
|
1822 |
y += args[2];
|
|
|
1823 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1824 |
|
|
|
1825 |
/* join point; on curve, with y-value the same as the last */
|
|
|
1826 |
/* control point's y-value */
|
|
|
1827 |
x += args[3];
|
|
|
1828 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1829 |
|
|
|
1830 |
/* third control point, with y-value the same as the join */
|
|
|
1831 |
/* point's y-value */
|
|
|
1832 |
x += args[4];
|
|
|
1833 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1834 |
|
|
|
1835 |
/* fourth control point */
|
|
|
1836 |
x += args[5];
|
|
|
1837 |
y = start_y;
|
|
|
1838 |
cff_builder_add_point( builder, x, y, 0 );
|
|
|
1839 |
|
|
|
1840 |
/* ending point, with y-value the same as the start point's */
|
|
|
1841 |
/* y-value -- we don't add this point, though */
|
|
|
1842 |
x += args[6];
|
|
|
1843 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1844 |
|
|
|
1845 |
args = stack;
|
|
|
1846 |
break;
|
|
|
1847 |
}
|
|
|
1848 |
|
|
|
1849 |
case cff_op_flex1:
|
|
|
1850 |
{
|
|
|
1851 |
FT_Pos start_x, start_y; /* record start x, y values for */
|
|
|
1852 |
/* alter use */
|
|
|
1853 |
FT_Fixed dx = 0, dy = 0; /* used in horizontal/vertical */
|
|
|
1854 |
/* algorithm below */
|
|
|
1855 |
FT_Int horizontal, count;
|
|
|
1856 |
FT_Fixed* temp;
|
|
|
1857 |
|
|
|
1858 |
|
|
|
1859 |
FT_TRACE4(( " flex1\n" ));
|
|
|
1860 |
|
|
|
1861 |
/* adding six more points; 4 control points, 2 on-curve points */
|
|
|
1862 |
if ( cff_builder_start_point( builder, x, y ) ||
|
|
|
1863 |
check_points( builder, 6 ) )
|
|
|
1864 |
goto Fail;
|
|
|
1865 |
|
|
|
1866 |
/* record the starting point's x, y position for later use */
|
|
|
1867 |
start_x = x;
|
|
|
1868 |
start_y = y;
|
|
|
1869 |
|
|
|
1870 |
/* XXX: figure out whether this is supposed to be a horizontal */
|
|
|
1871 |
/* or vertical flex; the Type 2 specification is vague... */
|
|
|
1872 |
|
|
|
1873 |
temp = args;
|
|
|
1874 |
|
|
|
1875 |
/* grab up to the last argument */
|
|
|
1876 |
for ( count = 5; count > 0; count-- )
|
|
|
1877 |
{
|
|
|
1878 |
dx += temp[0];
|
|
|
1879 |
dy += temp[1];
|
|
|
1880 |
temp += 2;
|
|
|
1881 |
}
|
|
|
1882 |
|
|
|
1883 |
if ( dx < 0 )
|
|
|
1884 |
dx = -dx;
|
|
|
1885 |
if ( dy < 0 )
|
|
|
1886 |
dy = -dy;
|
|
|
1887 |
|
|
|
1888 |
/* strange test, but here it is... */
|
|
|
1889 |
horizontal = ( dx > dy );
|
|
|
1890 |
|
|
|
1891 |
for ( count = 5; count > 0; count-- )
|
|
|
1892 |
{
|
|
|
1893 |
x += args[0];
|
|
|
1894 |
y += args[1];
|
|
|
1895 |
cff_builder_add_point( builder, x, y,
|
|
|
1896 |
(FT_Bool)( count == 3 ) );
|
|
|
1897 |
args += 2;
|
|
|
1898 |
}
|
|
|
1899 |
|
|
|
1900 |
/* is last operand an x- or y-delta? */
|
|
|
1901 |
if ( horizontal )
|
|
|
1902 |
{
|
|
|
1903 |
x += args[0];
|
|
|
1904 |
y = start_y;
|
|
|
1905 |
}
|
|
|
1906 |
else
|
|
|
1907 |
{
|
|
|
1908 |
x = start_x;
|
|
|
1909 |
y += args[0];
|
|
|
1910 |
}
|
|
|
1911 |
|
|
|
1912 |
cff_builder_add_point( builder, x, y, 1 );
|
|
|
1913 |
|
|
|
1914 |
args = stack;
|
|
|
1915 |
break;
|
|
|
1916 |
}
|
|
|
1917 |
|
|
|
1918 |
case cff_op_flex:
|
|
|
1919 |
{
|
|
|
1920 |
FT_UInt count;
|
|
|
1921 |
|
|
|
1922 |
|
|
|
1923 |
FT_TRACE4(( " flex\n" ));
|
|
|
1924 |
|
|
|
1925 |
if ( cff_builder_start_point( builder, x, y ) ||
|
|
|
1926 |
check_points( builder, 6 ) )
|
|
|
1927 |
goto Fail;
|
|
|
1928 |
|
|
|
1929 |
for ( count = 6; count > 0; count-- )
|
|
|
1930 |
{
|
|
|
1931 |
x += args[0];
|
|
|
1932 |
y += args[1];
|
|
|
1933 |
cff_builder_add_point( builder, x, y,
|
|
|
1934 |
(FT_Bool)( count == 4 || count == 1 ) );
|
|
|
1935 |
args += 2;
|
|
|
1936 |
}
|
|
|
1937 |
|
|
|
1938 |
args = stack;
|
|
|
1939 |
}
|
|
|
1940 |
break;
|
|
|
1941 |
|
|
|
1942 |
case cff_op_seac:
|
|
|
1943 |
FT_TRACE4(( " seac\n" ));
|
|
|
1944 |
|
|
|
1945 |
error = cff_operator_seac( decoder,
|
|
|
1946 |
args[0], args[1], args[2],
|
|
|
1947 |
(FT_Int)( args[3] >> 16 ),
|
|
|
1948 |
(FT_Int)( args[4] >> 16 ) );
|
|
|
1949 |
|
|
|
1950 |
/* add current outline to the glyph slot */
|
|
|
1951 |
FT_GlyphLoader_Add( builder->loader );
|
|
|
1952 |
|
|
|
1953 |
/* return now! */
|
|
|
1954 |
FT_TRACE4(( "\n" ));
|
|
|
1955 |
return error;
|
|
|
1956 |
|
|
|
1957 |
case cff_op_endchar:
|
|
|
1958 |
FT_TRACE4(( " endchar\n" ));
|
|
|
1959 |
|
|
|
1960 |
/* We are going to emulate the seac operator. */
|
|
|
1961 |
if ( num_args >= 4 )
|
|
|
1962 |
{
|
|
|
1963 |
/* Save glyph width so that the subglyphs don't overwrite it. */
|
|
|
1964 |
FT_Pos glyph_width = decoder->glyph_width;
|
|
|
1965 |
|
|
|
1966 |
error = cff_operator_seac( decoder,
|
|
|
1967 |
0L, args[-4], args[-3],
|
|
|
1968 |
(FT_Int)( args[-2] >> 16 ),
|
|
|
1969 |
(FT_Int)( args[-1] >> 16 ) );
|
|
|
1970 |
|
|
|
1971 |
decoder->glyph_width = glyph_width;
|
|
|
1972 |
}
|
|
|
1973 |
else
|
|
|
1974 |
{
|
|
|
1975 |
if ( !error )
|
|
|
1976 |
error = CFF_Err_Ok;
|
|
|
1977 |
|
|
|
1978 |
cff_builder_close_contour( builder );
|
|
|
1979 |
|
|
|
1980 |
/* close hints recording session */
|
|
|
1981 |
if ( hinter )
|
|
|
1982 |
{
|
|
|
1983 |
if ( hinter->close( hinter->hints,
|
|
|
1984 |
builder->current->n_points ) )
|
|
|
1985 |
goto Syntax_Error;
|
|
|
1986 |
|
|
|
1987 |
/* apply hints to the loaded glyph outline now */
|
|
|
1988 |
hinter->apply( hinter->hints,
|
|
|
1989 |
builder->current,
|
|
|
1990 |
(PSH_Globals)builder->hints_globals,
|
|
|
1991 |
decoder->hint_mode );
|
|
|
1992 |
}
|
|
|
1993 |
|
|
|
1994 |
/* add current outline to the glyph slot */
|
|
|
1995 |
FT_GlyphLoader_Add( builder->loader );
|
|
|
1996 |
}
|
|
|
1997 |
|
|
|
1998 |
/* return now! */
|
|
|
1999 |
FT_TRACE4(( "\n" ));
|
|
|
2000 |
return error;
|
|
|
2001 |
|
|
|
2002 |
case cff_op_abs:
|
|
|
2003 |
FT_TRACE4(( " abs\n" ));
|
|
|
2004 |
|
|
|
2005 |
if ( args[0] < 0 )
|
|
|
2006 |
args[0] = -args[0];
|
|
|
2007 |
args++;
|
|
|
2008 |
break;
|
|
|
2009 |
|
|
|
2010 |
case cff_op_add:
|
|
|
2011 |
FT_TRACE4(( " add\n" ));
|
|
|
2012 |
|
|
|
2013 |
args[0] += args[1];
|
|
|
2014 |
args++;
|
|
|
2015 |
break;
|
|
|
2016 |
|
|
|
2017 |
case cff_op_sub:
|
|
|
2018 |
FT_TRACE4(( " sub\n" ));
|
|
|
2019 |
|
|
|
2020 |
args[0] -= args[1];
|
|
|
2021 |
args++;
|
|
|
2022 |
break;
|
|
|
2023 |
|
|
|
2024 |
case cff_op_div:
|
|
|
2025 |
FT_TRACE4(( " div\n" ));
|
|
|
2026 |
|
|
|
2027 |
args[0] = FT_DivFix( args[0], args[1] );
|
|
|
2028 |
args++;
|
|
|
2029 |
break;
|
|
|
2030 |
|
|
|
2031 |
case cff_op_neg:
|
|
|
2032 |
FT_TRACE4(( " neg\n" ));
|
|
|
2033 |
|
|
|
2034 |
args[0] = -args[0];
|
|
|
2035 |
args++;
|
|
|
2036 |
break;
|
|
|
2037 |
|
|
|
2038 |
case cff_op_random:
|
|
|
2039 |
{
|
|
|
2040 |
FT_Fixed Rand;
|
|
|
2041 |
|
|
|
2042 |
|
|
|
2043 |
FT_TRACE4(( " rand\n" ));
|
|
|
2044 |
|
|
|
2045 |
Rand = seed;
|
|
|
2046 |
if ( Rand >= 0x8000L )
|
|
|
2047 |
Rand++;
|
|
|
2048 |
|
|
|
2049 |
args[0] = Rand;
|
|
|
2050 |
seed = FT_MulFix( seed, 0x10000L - seed );
|
|
|
2051 |
if ( seed == 0 )
|
|
|
2052 |
seed += 0x2873;
|
|
|
2053 |
args++;
|
|
|
2054 |
}
|
|
|
2055 |
break;
|
|
|
2056 |
|
|
|
2057 |
case cff_op_mul:
|
|
|
2058 |
FT_TRACE4(( " mul\n" ));
|
|
|
2059 |
|
|
|
2060 |
args[0] = FT_MulFix( args[0], args[1] );
|
|
|
2061 |
args++;
|
|
|
2062 |
break;
|
|
|
2063 |
|
|
|
2064 |
case cff_op_sqrt:
|
|
|
2065 |
FT_TRACE4(( " sqrt\n" ));
|
|
|
2066 |
|
|
|
2067 |
if ( args[0] > 0 )
|
|
|
2068 |
{
|
|
|
2069 |
FT_Int count = 9;
|
|
|
2070 |
FT_Fixed root = args[0];
|
|
|
2071 |
FT_Fixed new_root;
|
|
|
2072 |
|
|
|
2073 |
|
|
|
2074 |
for (;;)
|
|
|
2075 |
{
|
|
|
2076 |
new_root = ( root + FT_DivFix( args[0], root ) + 1 ) >> 1;
|
|
|
2077 |
if ( new_root == root || count <= 0 )
|
|
|
2078 |
break;
|
|
|
2079 |
root = new_root;
|
|
|
2080 |
}
|
|
|
2081 |
args[0] = new_root;
|
|
|
2082 |
}
|
|
|
2083 |
else
|
|
|
2084 |
args[0] = 0;
|
|
|
2085 |
args++;
|
|
|
2086 |
break;
|
|
|
2087 |
|
|
|
2088 |
case cff_op_drop:
|
|
|
2089 |
/* nothing */
|
|
|
2090 |
FT_TRACE4(( " drop\n" ));
|
|
|
2091 |
|
|
|
2092 |
break;
|
|
|
2093 |
|
|
|
2094 |
case cff_op_exch:
|
|
|
2095 |
{
|
|
|
2096 |
FT_Fixed tmp;
|
|
|
2097 |
|
|
|
2098 |
|
|
|
2099 |
FT_TRACE4(( " exch\n" ));
|
|
|
2100 |
|
|
|
2101 |
tmp = args[0];
|
|
|
2102 |
args[0] = args[1];
|
|
|
2103 |
args[1] = tmp;
|
|
|
2104 |
args += 2;
|
|
|
2105 |
}
|
|
|
2106 |
break;
|
|
|
2107 |
|
|
|
2108 |
case cff_op_index:
|
|
|
2109 |
{
|
|
|
2110 |
FT_Int idx = (FT_Int)( args[0] >> 16 );
|
|
|
2111 |
|
|
|
2112 |
|
|
|
2113 |
FT_TRACE4(( " index\n" ));
|
|
|
2114 |
|
|
|
2115 |
if ( idx < 0 )
|
|
|
2116 |
idx = 0;
|
|
|
2117 |
else if ( idx > num_args - 2 )
|
|
|
2118 |
idx = num_args - 2;
|
|
|
2119 |
args[0] = args[-( idx + 1 )];
|
|
|
2120 |
args++;
|
|
|
2121 |
}
|
|
|
2122 |
break;
|
|
|
2123 |
|
|
|
2124 |
case cff_op_roll:
|
|
|
2125 |
{
|
|
|
2126 |
FT_Int count = (FT_Int)( args[0] >> 16 );
|
|
|
2127 |
FT_Int idx = (FT_Int)( args[1] >> 16 );
|
|
|
2128 |
|
|
|
2129 |
|
|
|
2130 |
FT_TRACE4(( " roll\n" ));
|
|
|
2131 |
|
|
|
2132 |
if ( count <= 0 )
|
|
|
2133 |
count = 1;
|
|
|
2134 |
|
|
|
2135 |
args -= count;
|
|
|
2136 |
if ( args < stack )
|
|
|
2137 |
goto Stack_Underflow;
|
|
|
2138 |
|
|
|
2139 |
if ( idx >= 0 )
|
|
|
2140 |
{
|
|
|
2141 |
while ( idx > 0 )
|
|
|
2142 |
{
|
|
|
2143 |
FT_Fixed tmp = args[count - 1];
|
|
|
2144 |
FT_Int i;
|
|
|
2145 |
|
|
|
2146 |
|
|
|
2147 |
for ( i = count - 2; i >= 0; i-- )
|
|
|
2148 |
args[i + 1] = args[i];
|
|
|
2149 |
args[0] = tmp;
|
|
|
2150 |
idx--;
|
|
|
2151 |
}
|
|
|
2152 |
}
|
|
|
2153 |
else
|
|
|
2154 |
{
|
|
|
2155 |
while ( idx < 0 )
|
|
|
2156 |
{
|
|
|
2157 |
FT_Fixed tmp = args[0];
|
|
|
2158 |
FT_Int i;
|
|
|
2159 |
|
|
|
2160 |
|
|
|
2161 |
for ( i = 0; i < count - 1; i++ )
|
|
|
2162 |
args[i] = args[i + 1];
|
|
|
2163 |
args[count - 1] = tmp;
|
|
|
2164 |
idx++;
|
|
|
2165 |
}
|
|
|
2166 |
}
|
|
|
2167 |
args += count;
|
|
|
2168 |
}
|
|
|
2169 |
break;
|
|
|
2170 |
|
|
|
2171 |
case cff_op_dup:
|
|
|
2172 |
FT_TRACE4(( " dup\n" ));
|
|
|
2173 |
|
|
|
2174 |
args[1] = args[0];
|
|
|
2175 |
args += 2;
|
|
|
2176 |
break;
|
|
|
2177 |
|
|
|
2178 |
case cff_op_put:
|
|
|
2179 |
{
|
|
|
2180 |
FT_Fixed val = args[0];
|
|
|
2181 |
FT_Int idx = (FT_Int)( args[1] >> 16 );
|
|
|
2182 |
|
|
|
2183 |
|
|
|
2184 |
FT_TRACE4(( " put\n" ));
|
|
|
2185 |
|
|
|
2186 |
if ( idx >= 0 && idx < CFF_MAX_TRANS_ELEMENTS )
|
|
|
2187 |
decoder->buildchar[idx] = val;
|
|
|
2188 |
}
|
|
|
2189 |
break;
|
|
|
2190 |
|
|
|
2191 |
case cff_op_get:
|
|
|
2192 |
{
|
|
|
2193 |
FT_Int idx = (FT_Int)( args[0] >> 16 );
|
|
|
2194 |
FT_Fixed val = 0;
|
|
|
2195 |
|
|
|
2196 |
|
|
|
2197 |
FT_TRACE4(( " get\n" ));
|
|
|
2198 |
|
|
|
2199 |
if ( idx >= 0 && idx < CFF_MAX_TRANS_ELEMENTS )
|
|
|
2200 |
val = decoder->buildchar[idx];
|
|
|
2201 |
|
|
|
2202 |
args[0] = val;
|
|
|
2203 |
args++;
|
|
|
2204 |
}
|
|
|
2205 |
break;
|
|
|
2206 |
|
|
|
2207 |
case cff_op_store:
|
|
|
2208 |
FT_TRACE4(( " store\n"));
|
|
|
2209 |
|
|
|
2210 |
goto Unimplemented;
|
|
|
2211 |
|
|
|
2212 |
case cff_op_load:
|
|
|
2213 |
FT_TRACE4(( " load\n" ));
|
|
|
2214 |
|
|
|
2215 |
goto Unimplemented;
|
|
|
2216 |
|
|
|
2217 |
case cff_op_dotsection:
|
|
|
2218 |
/* this operator is deprecated and ignored by the parser */
|
|
|
2219 |
FT_TRACE4(( " dotsection\n" ));
|
|
|
2220 |
break;
|
|
|
2221 |
|
|
|
2222 |
case cff_op_closepath:
|
|
|
2223 |
/* this is an invalid Type 2 operator; however, there */
|
|
|
2224 |
/* exist fonts which are incorrectly converted from probably */
|
|
|
2225 |
/* Type 1 to CFF, and some parsers seem to accept it */
|
|
|
2226 |
|
|
|
2227 |
FT_TRACE4(( " closepath (invalid op)\n" ));
|
|
|
2228 |
|
|
|
2229 |
args = stack;
|
|
|
2230 |
break;
|
|
|
2231 |
|
|
|
2232 |
case cff_op_hsbw:
|
|
|
2233 |
/* this is an invalid Type 2 operator; however, there */
|
|
|
2234 |
/* exist fonts which are incorrectly converted from probably */
|
|
|
2235 |
/* Type 1 to CFF, and some parsers seem to accept it */
|
|
|
2236 |
|
|
|
2237 |
FT_TRACE4(( " hsbw (invalid op)\n" ));
|
|
|
2238 |
|
|
|
2239 |
decoder->glyph_width = decoder->nominal_width + ( args[1] >> 16 );
|
|
|
2240 |
|
|
|
2241 |
decoder->builder.left_bearing.x = args[0];
|
|
|
2242 |
decoder->builder.left_bearing.y = 0;
|
|
|
2243 |
|
|
|
2244 |
x = decoder->builder.pos_x + args[0];
|
|
|
2245 |
y = decoder->builder.pos_y;
|
|
|
2246 |
args = stack;
|
|
|
2247 |
break;
|
|
|
2248 |
|
|
|
2249 |
case cff_op_sbw:
|
|
|
2250 |
/* this is an invalid Type 2 operator; however, there */
|
|
|
2251 |
/* exist fonts which are incorrectly converted from probably */
|
|
|
2252 |
/* Type 1 to CFF, and some parsers seem to accept it */
|
|
|
2253 |
|
|
|
2254 |
FT_TRACE4(( " sbw (invalid op)\n" ));
|
|
|
2255 |
|
|
|
2256 |
decoder->glyph_width = decoder->nominal_width + ( args[2] >> 16 );
|
|
|
2257 |
|
|
|
2258 |
decoder->builder.left_bearing.x = args[0];
|
|
|
2259 |
decoder->builder.left_bearing.y = args[1];
|
|
|
2260 |
|
|
|
2261 |
x = decoder->builder.pos_x + args[0];
|
|
|
2262 |
y = decoder->builder.pos_y + args[1];
|
|
|
2263 |
args = stack;
|
|
|
2264 |
break;
|
|
|
2265 |
|
|
|
2266 |
case cff_op_setcurrentpoint:
|
|
|
2267 |
/* this is an invalid Type 2 operator; however, there */
|
|
|
2268 |
/* exist fonts which are incorrectly converted from probably */
|
|
|
2269 |
/* Type 1 to CFF, and some parsers seem to accept it */
|
|
|
2270 |
|
|
|
2271 |
FT_TRACE4(( " setcurrentpoint (invalid op)\n" ));
|
|
|
2272 |
|
|
|
2273 |
x = decoder->builder.pos_x + args[0];
|
|
|
2274 |
y = decoder->builder.pos_y + args[1];
|
|
|
2275 |
args = stack;
|
|
|
2276 |
break;
|
|
|
2277 |
|
|
|
2278 |
case cff_op_callothersubr:
|
|
|
2279 |
/* this is an invalid Type 2 operator; however, there */
|
|
|
2280 |
/* exist fonts which are incorrectly converted from probably */
|
|
|
2281 |
/* Type 1 to CFF, and some parsers seem to accept it */
|
|
|
2282 |
|
|
|
2283 |
FT_TRACE4(( " callothersubr (invalid op)\n" ));
|
|
|
2284 |
|
|
|
2285 |
/* subsequent `pop' operands should add the arguments, */
|
|
|
2286 |
/* this is the implementation described for `unknown' other */
|
|
|
2287 |
/* subroutines in the Type1 spec. */
|
|
|
2288 |
/* */
|
|
|
2289 |
/* XXX Fix return arguments (see discussion below). */
|
|
|
2290 |
args -= 2 + ( args[-2] >> 16 );
|
|
|
2291 |
if ( args < stack )
|
|
|
2292 |
goto Stack_Underflow;
|
|
|
2293 |
break;
|
|
|
2294 |
|
|
|
2295 |
case cff_op_pop:
|
|
|
2296 |
/* this is an invalid Type 2 operator; however, there */
|
|
|
2297 |
/* exist fonts which are incorrectly converted from probably */
|
|
|
2298 |
/* Type 1 to CFF, and some parsers seem to accept it */
|
|
|
2299 |
|
|
|
2300 |
FT_TRACE4(( " pop (invalid op)\n" ));
|
|
|
2301 |
|
|
|
2302 |
/* XXX Increasing `args' is wrong: After a certain number of */
|
|
|
2303 |
/* `pop's we get a stack overflow. Reason for doing it is */
|
|
|
2304 |
/* code like this (actually found in a CFF font): */
|
|
|
2305 |
/* */
|
|
|
2306 |
/* 17 1 3 callothersubr */
|
|
|
2307 |
/* pop */
|
|
|
2308 |
/* callsubr */
|
|
|
2309 |
/* */
|
|
|
2310 |
/* Since we handle `callothersubr' as a no-op, and */
|
|
|
2311 |
/* `callsubr' needs at least one argument, `pop' can't be a */
|
|
|
2312 |
/* no-op too as it basically should be. */
|
|
|
2313 |
/* */
|
|
|
2314 |
/* The right solution would be to provide real support for */
|
|
|
2315 |
/* `callothersubr' as done in `t1decode.c', however, given */
|
|
|
2316 |
/* the fact that CFF fonts with `pop' are invalid, it is */
|
|
|
2317 |
/* questionable whether it is worth the time. */
|
|
|
2318 |
args++;
|
|
|
2319 |
break;
|
|
|
2320 |
|
|
|
2321 |
case cff_op_and:
|
|
|
2322 |
{
|
|
|
2323 |
FT_Fixed cond = args[0] && args[1];
|
|
|
2324 |
|
|
|
2325 |
|
|
|
2326 |
FT_TRACE4(( " and\n" ));
|
|
|
2327 |
|
|
|
2328 |
args[0] = cond ? 0x10000L : 0;
|
|
|
2329 |
args++;
|
|
|
2330 |
}
|
|
|
2331 |
break;
|
|
|
2332 |
|
|
|
2333 |
case cff_op_or:
|
|
|
2334 |
{
|
|
|
2335 |
FT_Fixed cond = args[0] || args[1];
|
|
|
2336 |
|
|
|
2337 |
|
|
|
2338 |
FT_TRACE4(( " or\n" ));
|
|
|
2339 |
|
|
|
2340 |
args[0] = cond ? 0x10000L : 0;
|
|
|
2341 |
args++;
|
|
|
2342 |
}
|
|
|
2343 |
break;
|
|
|
2344 |
|
|
|
2345 |
case cff_op_eq:
|
|
|
2346 |
{
|
|
|
2347 |
FT_Fixed cond = !args[0];
|
|
|
2348 |
|
|
|
2349 |
|
|
|
2350 |
FT_TRACE4(( " eq\n" ));
|
|
|
2351 |
|
|
|
2352 |
args[0] = cond ? 0x10000L : 0;
|
|
|
2353 |
args++;
|
|
|
2354 |
}
|
|
|
2355 |
break;
|
|
|
2356 |
|
|
|
2357 |
case cff_op_ifelse:
|
|
|
2358 |
{
|
|
|
2359 |
FT_Fixed cond = ( args[2] <= args[3] );
|
|
|
2360 |
|
|
|
2361 |
|
|
|
2362 |
FT_TRACE4(( " ifelse\n" ));
|
|
|
2363 |
|
|
|
2364 |
if ( !cond )
|
|
|
2365 |
args[0] = args[1];
|
|
|
2366 |
args++;
|
|
|
2367 |
}
|
|
|
2368 |
break;
|
|
|
2369 |
|
|
|
2370 |
case cff_op_callsubr:
|
|
|
2371 |
{
|
|
|
2372 |
FT_UInt idx = (FT_UInt)( ( args[0] >> 16 ) +
|
|
|
2373 |
decoder->locals_bias );
|
|
|
2374 |
|
|
|
2375 |
|
|
|
2376 |
FT_TRACE4(( " callsubr(%d)\n", idx ));
|
|
|
2377 |
|
|
|
2378 |
if ( idx >= decoder->num_locals )
|
|
|
2379 |
{
|
|
|
2380 |
FT_ERROR(( "cff_decoder_parse_charstrings:"
|
|
|
2381 |
" invalid local subr index\n" ));
|
|
|
2382 |
goto Syntax_Error;
|
|
|
2383 |
}
|
|
|
2384 |
|
|
|
2385 |
if ( zone - decoder->zones >= CFF_MAX_SUBRS_CALLS )
|
|
|
2386 |
{
|
|
|
2387 |
FT_ERROR(( "cff_decoder_parse_charstrings:"
|
|
|
2388 |
" too many nested subrs\n" ));
|
|
|
2389 |
goto Syntax_Error;
|
|
|
2390 |
}
|
|
|
2391 |
|
|
|
2392 |
zone->cursor = ip; /* save current instruction pointer */
|
|
|
2393 |
|
|
|
2394 |
zone++;
|
|
|
2395 |
zone->base = decoder->locals[idx];
|
|
|
2396 |
zone->limit = decoder->locals[idx + 1];
|
|
|
2397 |
zone->cursor = zone->base;
|
|
|
2398 |
|
|
|
2399 |
if ( !zone->base || zone->limit == zone->base )
|
|
|
2400 |
{
|
|
|
2401 |
FT_ERROR(( "cff_decoder_parse_charstrings:"
|
|
|
2402 |
" invoking empty subrs\n" ));
|
|
|
2403 |
goto Syntax_Error;
|
|
|
2404 |
}
|
|
|
2405 |
|
|
|
2406 |
decoder->zone = zone;
|
|
|
2407 |
ip = zone->base;
|
|
|
2408 |
limit = zone->limit;
|
|
|
2409 |
}
|
|
|
2410 |
break;
|
|
|
2411 |
|
|
|
2412 |
case cff_op_callgsubr:
|
|
|
2413 |
{
|
|
|
2414 |
FT_UInt idx = (FT_UInt)( ( args[0] >> 16 ) +
|
|
|
2415 |
decoder->globals_bias );
|
|
|
2416 |
|
|
|
2417 |
|
|
|
2418 |
FT_TRACE4(( " callgsubr(%d)\n", idx ));
|
|
|
2419 |
|
|
|
2420 |
if ( idx >= decoder->num_globals )
|
|
|
2421 |
{
|
|
|
2422 |
FT_ERROR(( "cff_decoder_parse_charstrings:"
|
|
|
2423 |
" invalid global subr index\n" ));
|
|
|
2424 |
goto Syntax_Error;
|
|
|
2425 |
}
|
|
|
2426 |
|
|
|
2427 |
if ( zone - decoder->zones >= CFF_MAX_SUBRS_CALLS )
|
|
|
2428 |
{
|
|
|
2429 |
FT_ERROR(( "cff_decoder_parse_charstrings:"
|
|
|
2430 |
" too many nested subrs\n" ));
|
|
|
2431 |
goto Syntax_Error;
|
|
|
2432 |
}
|
|
|
2433 |
|
|
|
2434 |
zone->cursor = ip; /* save current instruction pointer */
|
|
|
2435 |
|
|
|
2436 |
zone++;
|
|
|
2437 |
zone->base = decoder->globals[idx];
|
|
|
2438 |
zone->limit = decoder->globals[idx + 1];
|
|
|
2439 |
zone->cursor = zone->base;
|
|
|
2440 |
|
|
|
2441 |
if ( !zone->base || zone->limit == zone->base )
|
|
|
2442 |
{
|
|
|
2443 |
FT_ERROR(( "cff_decoder_parse_charstrings:"
|
|
|
2444 |
" invoking empty subrs\n" ));
|
|
|
2445 |
goto Syntax_Error;
|
|
|
2446 |
}
|
|
|
2447 |
|
|
|
2448 |
decoder->zone = zone;
|
|
|
2449 |
ip = zone->base;
|
|
|
2450 |
limit = zone->limit;
|
|
|
2451 |
}
|
|
|
2452 |
break;
|
|
|
2453 |
|
|
|
2454 |
case cff_op_return:
|
|
|
2455 |
FT_TRACE4(( " return\n" ));
|
|
|
2456 |
|
|
|
2457 |
if ( decoder->zone <= decoder->zones )
|
|
|
2458 |
{
|
|
|
2459 |
FT_ERROR(( "cff_decoder_parse_charstrings:"
|
|
|
2460 |
" unexpected return\n" ));
|
|
|
2461 |
goto Syntax_Error;
|
|
|
2462 |
}
|
|
|
2463 |
|
|
|
2464 |
decoder->zone--;
|
|
|
2465 |
zone = decoder->zone;
|
|
|
2466 |
ip = zone->cursor;
|
|
|
2467 |
limit = zone->limit;
|
|
|
2468 |
break;
|
|
|
2469 |
|
|
|
2470 |
default:
|
|
|
2471 |
Unimplemented:
|
|
|
2472 |
FT_ERROR(( "Unimplemented opcode: %d", ip[-1] ));
|
|
|
2473 |
|
|
|
2474 |
if ( ip[-1] == 12 )
|
|
|
2475 |
FT_ERROR(( " %d", ip[0] ));
|
|
|
2476 |
FT_ERROR(( "\n" ));
|
|
|
2477 |
|
|
|
2478 |
return CFF_Err_Unimplemented_Feature;
|
|
|
2479 |
}
|
|
|
2480 |
|
|
|
2481 |
decoder->top = args;
|
|
|
2482 |
|
|
|
2483 |
if ( decoder->top - stack >= CFF_MAX_OPERANDS )
|
|
|
2484 |
goto Stack_Overflow;
|
|
|
2485 |
|
|
|
2486 |
} /* general operator processing */
|
|
|
2487 |
|
|
|
2488 |
} /* while ip < limit */
|
|
|
2489 |
|
|
|
2490 |
FT_TRACE4(( "..end..\n\n" ));
|
|
|
2491 |
|
|
|
2492 |
Fail:
|
|
|
2493 |
return error;
|
|
|
2494 |
|
|
|
2495 |
Syntax_Error:
|
|
|
2496 |
FT_TRACE4(( "cff_decoder_parse_charstrings: syntax error\n" ));
|
|
|
2497 |
return CFF_Err_Invalid_File_Format;
|
|
|
2498 |
|
|
|
2499 |
Stack_Underflow:
|
|
|
2500 |
FT_TRACE4(( "cff_decoder_parse_charstrings: stack underflow\n" ));
|
|
|
2501 |
return CFF_Err_Too_Few_Arguments;
|
|
|
2502 |
|
|
|
2503 |
Stack_Overflow:
|
|
|
2504 |
FT_TRACE4(( "cff_decoder_parse_charstrings: stack overflow\n" ));
|
|
|
2505 |
return CFF_Err_Stack_Overflow;
|
|
|
2506 |
}
|
|
|
2507 |
|
|
|
2508 |
|
|
|
2509 |
/*************************************************************************/
|
|
|
2510 |
/*************************************************************************/
|
|
|
2511 |
/*************************************************************************/
|
|
|
2512 |
/********** *********/
|
|
|
2513 |
/********** *********/
|
|
|
2514 |
/********** COMPUTE THE MAXIMUM ADVANCE WIDTH *********/
|
|
|
2515 |
/********** *********/
|
|
|
2516 |
/********** The following code is in charge of computing *********/
|
|
|
2517 |
/********** the maximum advance width of the font. It *********/
|
|
|
2518 |
/********** quickly processes each glyph charstring to *********/
|
|
|
2519 |
/********** extract the value from either a `sbw' or `seac' *********/
|
|
|
2520 |
/********** operator. *********/
|
|
|
2521 |
/********** *********/
|
|
|
2522 |
/*************************************************************************/
|
|
|
2523 |
/*************************************************************************/
|
|
|
2524 |
/*************************************************************************/
|
|
|
2525 |
|
|
|
2526 |
|
|
|
2527 |
#if 0 /* unused until we support pure CFF fonts */
|
|
|
2528 |
|
|
|
2529 |
|
|
|
2530 |
FT_LOCAL_DEF( FT_Error )
|
|
|
2531 |
cff_compute_max_advance( TT_Face face,
|
|
|
2532 |
FT_Int* max_advance )
|
|
|
2533 |
{
|
|
|
2534 |
FT_Error error = CFF_Err_Ok;
|
|
|
2535 |
CFF_Decoder decoder;
|
|
|
2536 |
FT_Int glyph_index;
|
|
|
2537 |
CFF_Font cff = (CFF_Font)face->other;
|
|
|
2538 |
|
|
|
2539 |
|
|
|
2540 |
*max_advance = 0;
|
|
|
2541 |
|
|
|
2542 |
/* Initialize load decoder */
|
|
|
2543 |
cff_decoder_init( &decoder, face, 0, 0, 0, 0 );
|
|
|
2544 |
|
|
|
2545 |
decoder.builder.metrics_only = 1;
|
|
|
2546 |
decoder.builder.load_points = 0;
|
|
|
2547 |
|
|
|
2548 |
/* For each glyph, parse the glyph charstring and extract */
|
|
|
2549 |
/* the advance width. */
|
|
|
2550 |
for ( glyph_index = 0; glyph_index < face->root.num_glyphs;
|
|
|
2551 |
glyph_index++ )
|
|
|
2552 |
{
|
|
|
2553 |
FT_Byte* charstring;
|
|
|
2554 |
FT_ULong charstring_len;
|
|
|
2555 |
|
|
|
2556 |
|
|
|
2557 |
/* now get load the unscaled outline */
|
|
|
2558 |
error = cff_get_glyph_data( face, glyph_index,
|
|
|
2559 |
&charstring, &charstring_len );
|
|
|
2560 |
if ( !error )
|
|
|
2561 |
{
|
|
|
2562 |
error = cff_decoder_prepare( &decoder, size, glyph_index );
|
|
|
2563 |
if ( !error )
|
|
|
2564 |
error = cff_decoder_parse_charstrings( &decoder,
|
|
|
2565 |
charstring,
|
|
|
2566 |
charstring_len );
|
|
|
2567 |
|
|
|
2568 |
cff_free_glyph_data( face, &charstring, &charstring_len );
|
|
|
2569 |
}
|
|
|
2570 |
|
|
|
2571 |
/* ignore the error if one has occurred -- skip to next glyph */
|
|
|
2572 |
error = CFF_Err_Ok;
|
|
|
2573 |
}
|
|
|
2574 |
|
|
|
2575 |
*max_advance = decoder.builder.advance.x;
|
|
|
2576 |
|
|
|
2577 |
return CFF_Err_Ok;
|
|
|
2578 |
}
|
|
|
2579 |
|
|
|
2580 |
|
|
|
2581 |
#endif /* 0 */
|
|
|
2582 |
|
|
|
2583 |
|
|
|
2584 |
FT_LOCAL_DEF( FT_Error )
|
|
|
2585 |
cff_slot_load( CFF_GlyphSlot glyph,
|
|
|
2586 |
CFF_Size size,
|
|
|
2587 |
FT_UInt glyph_index,
|
|
|
2588 |
FT_Int32 load_flags )
|
|
|
2589 |
{
|
|
|
2590 |
FT_Error error;
|
|
|
2591 |
CFF_Decoder decoder;
|
|
|
2592 |
TT_Face face = (TT_Face)glyph->root.face;
|
|
|
2593 |
FT_Bool hinting, force_scaling;
|
|
|
2594 |
CFF_Font cff = (CFF_Font)face->extra.data;
|
|
|
2595 |
|
|
|
2596 |
FT_Matrix font_matrix;
|
|
|
2597 |
FT_Vector font_offset;
|
|
|
2598 |
|
|
|
2599 |
|
|
|
2600 |
force_scaling = FALSE;
|
|
|
2601 |
|
|
|
2602 |
/* in a CID-keyed font, consider `glyph_index' as a CID and map */
|
|
|
2603 |
/* it immediately to the real glyph_index -- if it isn't a */
|
|
|
2604 |
/* subsetted font, glyph_indices and CIDs are identical, though */
|
|
|
2605 |
if ( cff->top_font.font_dict.cid_registry != 0xFFFFU &&
|
|
|
2606 |
cff->charset.cids )
|
|
|
2607 |
{
|
|
|
2608 |
/* don't handle CID 0 (.notdef) which is directly mapped to GID 0 */
|
|
|
2609 |
if ( glyph_index != 0 )
|
|
|
2610 |
{
|
|
|
2611 |
glyph_index = cff_charset_cid_to_gindex( &cff->charset,
|
|
|
2612 |
glyph_index );
|
|
|
2613 |
if ( glyph_index == 0 )
|
|
|
2614 |
return CFF_Err_Invalid_Argument;
|
|
|
2615 |
}
|
|
|
2616 |
}
|
|
|
2617 |
else if ( glyph_index >= cff->num_glyphs )
|
|
|
2618 |
return CFF_Err_Invalid_Argument;
|
|
|
2619 |
|
|
|
2620 |
if ( load_flags & FT_LOAD_NO_RECURSE )
|
|
|
2621 |
load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;
|
|
|
2622 |
|
|
|
2623 |
glyph->x_scale = 0x10000L;
|
|
|
2624 |
glyph->y_scale = 0x10000L;
|
|
|
2625 |
if ( size )
|
|
|
2626 |
{
|
|
|
2627 |
glyph->x_scale = size->root.metrics.x_scale;
|
|
|
2628 |
glyph->y_scale = size->root.metrics.y_scale;
|
|
|
2629 |
}
|
|
|
2630 |
|
|
|
2631 |
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
|
|
|
2632 |
|
|
|
2633 |
/* try to load embedded bitmap if any */
|
|
|
2634 |
/* */
|
|
|
2635 |
/* XXX: The convention should be emphasized in */
|
|
|
2636 |
/* the documents because it can be confusing. */
|
|
|
2637 |
if ( size )
|
|
|
2638 |
{
|
|
|
2639 |
CFF_Face cff_face = (CFF_Face)size->root.face;
|
|
|
2640 |
SFNT_Service sfnt = (SFNT_Service)cff_face->sfnt;
|
|
|
2641 |
FT_Stream stream = cff_face->root.stream;
|
|
|
2642 |
|
|
|
2643 |
|
|
|
2644 |
if ( size->strike_index != 0xFFFFFFFFUL &&
|
|
|
2645 |
sfnt->load_eblc &&
|
|
|
2646 |
( load_flags & FT_LOAD_NO_BITMAP ) == 0 )
|
|
|
2647 |
{
|
|
|
2648 |
TT_SBit_MetricsRec metrics;
|
|
|
2649 |
|
|
|
2650 |
|
|
|
2651 |
error = sfnt->load_sbit_image( face,
|
|
|
2652 |
size->strike_index,
|
|
|
2653 |
glyph_index,
|
|
|
2654 |
(FT_Int)load_flags,
|
|
|
2655 |
stream,
|
|
|
2656 |
&glyph->root.bitmap,
|
|
|
2657 |
&metrics );
|
|
|
2658 |
|
|
|
2659 |
if ( !error )
|
|
|
2660 |
{
|
|
|
2661 |
glyph->root.outline.n_points = 0;
|
|
|
2662 |
glyph->root.outline.n_contours = 0;
|
|
|
2663 |
|
|
|
2664 |
glyph->root.metrics.width = (FT_Pos)metrics.width << 6;
|
|
|
2665 |
glyph->root.metrics.height = (FT_Pos)metrics.height << 6;
|
|
|
2666 |
|
|
|
2667 |
glyph->root.metrics.horiBearingX = (FT_Pos)metrics.horiBearingX << 6;
|
|
|
2668 |
glyph->root.metrics.horiBearingY = (FT_Pos)metrics.horiBearingY << 6;
|
|
|
2669 |
glyph->root.metrics.horiAdvance = (FT_Pos)metrics.horiAdvance << 6;
|
|
|
2670 |
|
|
|
2671 |
glyph->root.metrics.vertBearingX = (FT_Pos)metrics.vertBearingX << 6;
|
|
|
2672 |
glyph->root.metrics.vertBearingY = (FT_Pos)metrics.vertBearingY << 6;
|
|
|
2673 |
glyph->root.metrics.vertAdvance = (FT_Pos)metrics.vertAdvance << 6;
|
|
|
2674 |
|
|
|
2675 |
glyph->root.format = FT_GLYPH_FORMAT_BITMAP;
|
|
|
2676 |
|
|
|
2677 |
if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
|
|
|
2678 |
{
|
|
|
2679 |
glyph->root.bitmap_left = metrics.vertBearingX;
|
|
|
2680 |
glyph->root.bitmap_top = metrics.vertBearingY;
|
|
|
2681 |
}
|
|
|
2682 |
else
|
|
|
2683 |
{
|
|
|
2684 |
glyph->root.bitmap_left = metrics.horiBearingX;
|
|
|
2685 |
glyph->root.bitmap_top = metrics.horiBearingY;
|
|
|
2686 |
}
|
|
|
2687 |
return error;
|
|
|
2688 |
}
|
|
|
2689 |
}
|
|
|
2690 |
}
|
|
|
2691 |
|
|
|
2692 |
#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
|
|
|
2693 |
|
|
|
2694 |
/* return immediately if we only want the embedded bitmaps */
|
|
|
2695 |
if ( load_flags & FT_LOAD_SBITS_ONLY )
|
|
|
2696 |
return CFF_Err_Invalid_Argument;
|
|
|
2697 |
|
|
|
2698 |
/* if we have a CID subfont, use its matrix (which has already */
|
|
|
2699 |
/* been multiplied with the root matrix) */
|
|
|
2700 |
|
|
|
2701 |
/* this scaling is only relevant if the PS hinter isn't active */
|
|
|
2702 |
if ( cff->num_subfonts )
|
|
|
2703 |
{
|
|
|
2704 |
FT_ULong top_upm, sub_upm;
|
|
|
2705 |
FT_Byte fd_index = cff_fd_select_get( &cff->fd_select,
|
|
|
2706 |
glyph_index );
|
|
|
2707 |
|
|
|
2708 |
if ( fd_index >= cff->num_subfonts )
|
|
|
2709 |
fd_index = cff->num_subfonts - 1;
|
|
|
2710 |
|
|
|
2711 |
top_upm = cff->top_font.font_dict.units_per_em;
|
|
|
2712 |
sub_upm = cff->subfonts[fd_index]->font_dict.units_per_em;
|
|
|
2713 |
|
|
|
2714 |
|
|
|
2715 |
font_matrix = cff->subfonts[fd_index]->font_dict.font_matrix;
|
|
|
2716 |
font_offset = cff->subfonts[fd_index]->font_dict.font_offset;
|
|
|
2717 |
|
|
|
2718 |
if ( top_upm != sub_upm )
|
|
|
2719 |
{
|
|
|
2720 |
glyph->x_scale = FT_MulDiv( glyph->x_scale, top_upm, sub_upm );
|
|
|
2721 |
glyph->y_scale = FT_MulDiv( glyph->y_scale, top_upm, sub_upm );
|
|
|
2722 |
|
|
|
2723 |
force_scaling = TRUE;
|
|
|
2724 |
}
|
|
|
2725 |
}
|
|
|
2726 |
else
|
|
|
2727 |
{
|
|
|
2728 |
font_matrix = cff->top_font.font_dict.font_matrix;
|
|
|
2729 |
font_offset = cff->top_font.font_dict.font_offset;
|
|
|
2730 |
}
|
|
|
2731 |
|
|
|
2732 |
glyph->root.outline.n_points = 0;
|
|
|
2733 |
glyph->root.outline.n_contours = 0;
|
|
|
2734 |
|
|
|
2735 |
hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 &&
|
|
|
2736 |
( load_flags & FT_LOAD_NO_HINTING ) == 0 );
|
|
|
2737 |
|
|
|
2738 |
glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; /* by default */
|
|
|
2739 |
|
|
|
2740 |
{
|
|
|
2741 |
FT_Byte* charstring;
|
|
|
2742 |
FT_ULong charstring_len;
|
|
|
2743 |
|
|
|
2744 |
|
|
|
2745 |
cff_decoder_init( &decoder, face, size, glyph, hinting,
|
|
|
2746 |
FT_LOAD_TARGET_MODE( load_flags ) );
|
|
|
2747 |
|
|
|
2748 |
if ( load_flags & FT_LOAD_ADVANCE_ONLY )
|
|
|
2749 |
decoder.width_only = TRUE;
|
|
|
2750 |
|
|
|
2751 |
decoder.builder.no_recurse =
|
|
|
2752 |
(FT_Bool)( load_flags & FT_LOAD_NO_RECURSE );
|
|
|
2753 |
|
|
|
2754 |
/* now load the unscaled outline */
|
|
|
2755 |
error = cff_get_glyph_data( face, glyph_index,
|
|
|
2756 |
&charstring, &charstring_len );
|
|
|
2757 |
if ( error )
|
|
|
2758 |
goto Glyph_Build_Finished;
|
|
|
2759 |
|
|
|
2760 |
error = cff_decoder_prepare( &decoder, size, glyph_index );
|
|
|
2761 |
if ( error )
|
|
|
2762 |
goto Glyph_Build_Finished;
|
|
|
2763 |
|
|
|
2764 |
error = cff_decoder_parse_charstrings( &decoder,
|
|
|
2765 |
charstring,
|
|
|
2766 |
charstring_len );
|
|
|
2767 |
|
|
|
2768 |
cff_free_glyph_data( face, &charstring, charstring_len );
|
|
|
2769 |
|
|
|
2770 |
if ( error )
|
|
|
2771 |
goto Glyph_Build_Finished;
|
|
|
2772 |
|
|
|
2773 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
2774 |
/* Control data and length may not be available for incremental */
|
|
|
2775 |
/* fonts. */
|
|
|
2776 |
if ( face->root.internal->incremental_interface )
|
|
|
2777 |
{
|
|
|
2778 |
glyph->root.control_data = 0;
|
|
|
2779 |
glyph->root.control_len = 0;
|
|
|
2780 |
}
|
|
|
2781 |
else
|
|
|
2782 |
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
|
|
|
2783 |
|
|
|
2784 |
/* We set control_data and control_len if charstrings is loaded. */
|
|
|
2785 |
/* See how charstring loads at cff_index_access_element() in */
|
|
|
2786 |
/* cffload.c. */
|
|
|
2787 |
{
|
|
|
2788 |
CFF_Index csindex = &cff->charstrings_index;
|
|
|
2789 |
|
|
|
2790 |
|
|
|
2791 |
if ( csindex->offsets )
|
|
|
2792 |
{
|
|
|
2793 |
glyph->root.control_data = csindex->bytes +
|
|
|
2794 |
csindex->offsets[glyph_index] - 1;
|
|
|
2795 |
glyph->root.control_len = charstring_len;
|
|
|
2796 |
}
|
|
|
2797 |
}
|
|
|
2798 |
|
|
|
2799 |
Glyph_Build_Finished:
|
|
|
2800 |
/* save new glyph tables, if no error */
|
|
|
2801 |
if ( !error )
|
|
|
2802 |
cff_builder_done( &decoder.builder );
|
|
|
2803 |
/* XXX: anything to do for broken glyph entry? */
|
|
|
2804 |
}
|
|
|
2805 |
|
|
|
2806 |
#ifdef FT_CONFIG_OPTION_INCREMENTAL
|
|
|
2807 |
|
|
|
2808 |
/* Incremental fonts can optionally override the metrics. */
|
|
|
2809 |
if ( !error &&
|
|
|
2810 |
face->root.internal->incremental_interface &&
|
|
|
2811 |
face->root.internal->incremental_interface->funcs->get_glyph_metrics )
|
|
|
2812 |
{
|
|
|
2813 |
FT_Incremental_MetricsRec metrics;
|
|
|
2814 |
|
|
|
2815 |
|
|
|
2816 |
metrics.bearing_x = decoder.builder.left_bearing.x;
|
|
|
2817 |
metrics.bearing_y = 0;
|
|
|
2818 |
metrics.advance = decoder.builder.advance.x;
|
|
|
2819 |
metrics.advance_v = decoder.builder.advance.y;
|
|
|
2820 |
|
|
|
2821 |
error = face->root.internal->incremental_interface->funcs->get_glyph_metrics(
|
|
|
2822 |
face->root.internal->incremental_interface->object,
|
|
|
2823 |
glyph_index, FALSE, &metrics );
|
|
|
2824 |
|
|
|
2825 |
decoder.builder.left_bearing.x = metrics.bearing_x;
|
|
|
2826 |
decoder.builder.advance.x = metrics.advance;
|
|
|
2827 |
decoder.builder.advance.y = metrics.advance_v;
|
|
|
2828 |
}
|
|
|
2829 |
|
|
|
2830 |
#endif /* FT_CONFIG_OPTION_INCREMENTAL */
|
|
|
2831 |
|
|
|
2832 |
if ( !error )
|
|
|
2833 |
{
|
|
|
2834 |
/* Now, set the metrics -- this is rather simple, as */
|
|
|
2835 |
/* the left side bearing is the xMin, and the top side */
|
|
|
2836 |
/* bearing the yMax. */
|
|
|
2837 |
|
|
|
2838 |
/* For composite glyphs, return only left side bearing and */
|
|
|
2839 |
/* advance width. */
|
|
|
2840 |
if ( load_flags & FT_LOAD_NO_RECURSE )
|
|
|
2841 |
{
|
|
|
2842 |
FT_Slot_Internal internal = glyph->root.internal;
|
|
|
2843 |
|
|
|
2844 |
|
|
|
2845 |
glyph->root.metrics.horiBearingX = decoder.builder.left_bearing.x;
|
|
|
2846 |
glyph->root.metrics.horiAdvance = decoder.glyph_width;
|
|
|
2847 |
internal->glyph_matrix = font_matrix;
|
|
|
2848 |
internal->glyph_delta = font_offset;
|
|
|
2849 |
internal->glyph_transformed = 1;
|
|
|
2850 |
}
|
|
|
2851 |
else
|
|
|
2852 |
{
|
|
|
2853 |
FT_BBox cbox;
|
|
|
2854 |
FT_Glyph_Metrics* metrics = &glyph->root.metrics;
|
|
|
2855 |
FT_Vector advance;
|
|
|
2856 |
FT_Bool has_vertical_info;
|
|
|
2857 |
|
|
|
2858 |
|
|
|
2859 |
/* copy the _unscaled_ advance width */
|
|
|
2860 |
metrics->horiAdvance = decoder.glyph_width;
|
|
|
2861 |
glyph->root.linearHoriAdvance = decoder.glyph_width;
|
|
|
2862 |
glyph->root.internal->glyph_transformed = 0;
|
|
|
2863 |
|
|
|
2864 |
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
|
|
|
2865 |
has_vertical_info = FT_BOOL( face->vertical_info &&
|
|
|
2866 |
face->vertical.number_Of_VMetrics > 0 &&
|
|
|
2867 |
face->vertical.long_metrics );
|
|
|
2868 |
#else
|
|
|
2869 |
has_vertical_info = FT_BOOL( face->vertical_info &&
|
|
|
2870 |
face->vertical.number_Of_VMetrics > 0 );
|
|
|
2871 |
#endif
|
|
|
2872 |
|
|
|
2873 |
/* get the vertical metrics from the vtmx table if we have one */
|
|
|
2874 |
if ( has_vertical_info )
|
|
|
2875 |
{
|
|
|
2876 |
FT_Short vertBearingY = 0;
|
|
|
2877 |
FT_UShort vertAdvance = 0;
|
|
|
2878 |
|
|
|
2879 |
|
|
|
2880 |
( (SFNT_Service)face->sfnt )->get_metrics( face, 1,
|
|
|
2881 |
glyph_index,
|
|
|
2882 |
&vertBearingY,
|
|
|
2883 |
&vertAdvance );
|
|
|
2884 |
metrics->vertBearingY = vertBearingY;
|
|
|
2885 |
metrics->vertAdvance = vertAdvance;
|
|
|
2886 |
}
|
|
|
2887 |
else
|
|
|
2888 |
{
|
|
|
2889 |
/* make up vertical ones */
|
|
|
2890 |
if ( face->os2.version != 0xFFFFU )
|
|
|
2891 |
metrics->vertAdvance = (FT_Pos)( face->os2.sTypoAscender -
|
|
|
2892 |
face->os2.sTypoDescender );
|
|
|
2893 |
else
|
|
|
2894 |
metrics->vertAdvance = (FT_Pos)( face->horizontal.Ascender -
|
|
|
2895 |
face->horizontal.Descender );
|
|
|
2896 |
}
|
|
|
2897 |
|
|
|
2898 |
glyph->root.linearVertAdvance = metrics->vertAdvance;
|
|
|
2899 |
|
|
|
2900 |
glyph->root.format = FT_GLYPH_FORMAT_OUTLINE;
|
|
|
2901 |
|
|
|
2902 |
glyph->root.outline.flags = 0;
|
|
|
2903 |
if ( size && size->root.metrics.y_ppem < 24 )
|
|
|
2904 |
glyph->root.outline.flags |= FT_OUTLINE_HIGH_PRECISION;
|
|
|
2905 |
|
|
|
2906 |
glyph->root.outline.flags |= FT_OUTLINE_REVERSE_FILL;
|
|
|
2907 |
|
|
|
2908 |
if ( !( font_matrix.xx == 0x10000L &&
|
|
|
2909 |
font_matrix.yy == 0x10000L &&
|
|
|
2910 |
font_matrix.xy == 0 &&
|
|
|
2911 |
font_matrix.yx == 0 ) )
|
|
|
2912 |
FT_Outline_Transform( &glyph->root.outline, &font_matrix );
|
|
|
2913 |
|
|
|
2914 |
if ( !( font_offset.x == 0 &&
|
|
|
2915 |
font_offset.y == 0 ) )
|
|
|
2916 |
FT_Outline_Translate( &glyph->root.outline,
|
|
|
2917 |
font_offset.x, font_offset.y );
|
|
|
2918 |
|
|
|
2919 |
advance.x = metrics->horiAdvance;
|
|
|
2920 |
advance.y = 0;
|
|
|
2921 |
FT_Vector_Transform( &advance, &font_matrix );
|
|
|
2922 |
metrics->horiAdvance = advance.x + font_offset.x;
|
|
|
2923 |
|
|
|
2924 |
advance.x = 0;
|
|
|
2925 |
advance.y = metrics->vertAdvance;
|
|
|
2926 |
FT_Vector_Transform( &advance, &font_matrix );
|
|
|
2927 |
metrics->vertAdvance = advance.y + font_offset.y;
|
|
|
2928 |
|
|
|
2929 |
if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 || force_scaling )
|
|
|
2930 |
{
|
|
|
2931 |
/* scale the outline and the metrics */
|
|
|
2932 |
FT_Int n;
|
|
|
2933 |
FT_Outline* cur = &glyph->root.outline;
|
|
|
2934 |
FT_Vector* vec = cur->points;
|
|
|
2935 |
FT_Fixed x_scale = glyph->x_scale;
|
|
|
2936 |
FT_Fixed y_scale = glyph->y_scale;
|
|
|
2937 |
|
|
|
2938 |
|
|
|
2939 |
/* First of all, scale the points */
|
|
|
2940 |
if ( !hinting || !decoder.builder.hints_funcs )
|
|
|
2941 |
for ( n = cur->n_points; n > 0; n--, vec++ )
|
|
|
2942 |
{
|
|
|
2943 |
vec->x = FT_MulFix( vec->x, x_scale );
|
|
|
2944 |
vec->y = FT_MulFix( vec->y, y_scale );
|
|
|
2945 |
}
|
|
|
2946 |
|
|
|
2947 |
/* Then scale the metrics */
|
|
|
2948 |
metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale );
|
|
|
2949 |
metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale );
|
|
|
2950 |
}
|
|
|
2951 |
|
|
|
2952 |
/* compute the other metrics */
|
|
|
2953 |
FT_Outline_Get_CBox( &glyph->root.outline, &cbox );
|
|
|
2954 |
|
|
|
2955 |
metrics->width = cbox.xMax - cbox.xMin;
|
|
|
2956 |
metrics->height = cbox.yMax - cbox.yMin;
|
|
|
2957 |
|
|
|
2958 |
metrics->horiBearingX = cbox.xMin;
|
|
|
2959 |
metrics->horiBearingY = cbox.yMax;
|
|
|
2960 |
|
|
|
2961 |
if ( has_vertical_info )
|
|
|
2962 |
metrics->vertBearingX = metrics->horiBearingX -
|
|
|
2963 |
metrics->horiAdvance / 2;
|
|
|
2964 |
else
|
|
|
2965 |
{
|
|
|
2966 |
if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
|
|
|
2967 |
ft_synthesize_vertical_metrics( metrics,
|
|
|
2968 |
metrics->vertAdvance );
|
|
|
2969 |
}
|
|
|
2970 |
}
|
|
|
2971 |
}
|
|
|
2972 |
|
|
|
2973 |
return error;
|
|
|
2974 |
}
|
|
|
2975 |
|
|
|
2976 |
|
|
|
2977 |
/* END */
|