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- /* Copyright (C) 1995, 1996, 1997 Aladdin Enterprises. All rights reserved.
-
- This file is part of Aladdin Ghostscript.
-
- Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
- or distributor accepts any responsibility for the consequences of using it,
- or for whether it serves any particular purpose or works at all, unless he
- or she says so in writing. Refer to the Aladdin Ghostscript Free Public
- License (the "License") for full details.
-
- Every copy of Aladdin Ghostscript must include a copy of the License,
- normally in a plain ASCII text file named PUBLIC. The License grants you
- the right to copy, modify and redistribute Aladdin Ghostscript, but only
- under certain conditions described in the License. Among other things, the
- License requires that the copyright notice and this notice be preserved on
- all copies.
- */
-
- /* gxclpath.h */
- /* Internal definitions for higher-level command list facilities. */
- /* Extends (requires) gxcldev.h */
- #include "gxfixed.h" /* for gzpath.h */
-
- /* Define the flags indicating whether a band knows the current values of */
- /* various miscellaneous parameters (pcls->known). */
- #define flatness_known (1<<0)
- #define fill_adjust_known (1<<1)
- #define ctm_known (1<<2)
- #define line_width_known (1<<3)
- #define miter_limit_known (1<<4)
- #define misc0_known (1<<5)
- #define misc1_known (1<<6)
- #define dash_known (1<<7)
- #define clip_path_known (1<<8)
- #define stroke_all_known ((1<<9)-1)
- #define color_space_known (1<<9)
- /*#define all_known ((1<<10)-1)*/
-
- /* Define the drawing color types for distinguishing different */
- /* fill/stroke command variations. */
- typedef enum {
- cmd_dc_type_pure = 0,
- cmd_dc_type_ht = 1,
- cmd_dc_type_color = 2
- } cmd_dc_type;
-
- /* Extend the command set. See gxcldev.h for more information. */
- typedef enum {
- cmd_op_misc2 = 0xd0, /* (see below) */
- cmd_opv_set_flatness = 0xd0, /* flatness(float) */
- cmd_opv_set_fill_adjust = 0xd1, /* adjust_x/y(fixed) */
- cmd_opv_set_ctm = 0xd2, /* (0=0,0, 1=V,V, 2=V,-V, 3=U,V)x */
- /* (xx+yy,yx+xy)(0=0, 1=V)x(tx,ty), */
- /* 0..5 x coeff(float) */
- cmd_opv_set_line_width = 0xd3, /* width(float) */
- cmd_opv_set_misc2 = 0xd4,
- #define cmd_set_misc2_cap_join (0 << 6) /* 00: cap(3)join(3) */
- #define cmd_set_misc2_ac_op_sa (1 << 6) /* 01: 0(3)acc.curves(1)overprint(1) */
- /* stroke_adj(1) */
- #define cmd_set_misc2_notes (2 << 6) /* 10: seg.notes(6) */
- #define cmd_set_misc2_unused (3 << 6) /* 11: -unused- */
- cmd_opv_set_miter_limit = 0xd5, /* miter limit(float) */
- cmd_opv_set_dash = 0xd6, /* adapt(1)abs.dot(1)n(6), dot */
- /* length(float), offset(float), */
- /* n x (float) */
- cmd_opv_enable_clip = 0xd7, /* (nothing) */
- cmd_opv_disable_clip = 0xd8, /* (nothing) */
- cmd_opv_begin_clip = 0xd9, /* (nothing) */
- cmd_opv_end_clip = 0xda, /* outside? */
- cmd_opv_set_color_space = 0xdb, /* base(4)Indexed?(2)0(3) */
- /* [, hival#, table|map] */
- cmd_opv_begin_image = 0xdc, /* BPCi(3)(0=mask) */
- #ifdef FUTURE
- /* more params(1) */
- #else
- /* Interpolate(1) */
- #endif
- /* Matrix?(1)Decode?(1) */
- /* adjust/CombineWithColor(1) */
- /* rect?(1), */
- #ifdef FUTURE
- /* [format(2)Interpolate(1)0(5),] */
- #endif
- /* width#, height#, */
- /* [, aabbcd00, 0..6 x coeff(float)] */
- /* [, (0=default, 1=swapped default, */
- /* 2=0,V, 3=U,V)x4, */
- /* 0..8 x decode(float)], */
- /* [, x0#, w-x1#, y0#, h-y1#] */
- cmd_opv_image_data = 0xdd, /* height# (premature EOD if 0), */
- /* raster#, <data> */
- cmd_opv_set_color = 0xde, /* (0000abcd | */
- /* 0001aaaa abbbbbcc cccddddd), */
- /* (3|4) x level#: colored halftone */
- /* with base colors a,b,c,d */
- cmd_op_segment = 0xe0, /* (see below) */
- cmd_opv_rmoveto = 0xe0, /* dx%, dy% */
- cmd_opv_rlineto = 0xe1, /* dx%, dy% */
- cmd_opv_hlineto = 0xe2, /* dx% */
- cmd_opv_vlineto = 0xe3, /* dy% */
- cmd_opv_rrcurveto = 0xe4, /* dx1%,dy1%, dx2%,dy2%, dx3%,dy3% */
- cmd_opv_hvcurveto = 0xe5, /* dx1%, dx2%,dy2%, dy3% */
- cmd_opv_vhcurveto = 0xe6, /* dy1%, dx2%,dy2%, dx3% */
- cmd_opv_nrcurveto = 0xe7, /* dx2%,dy2%, dx3%,dy3% */
- cmd_opv_rncurveto = 0xe8, /* dx1%,dy1%, dx2%,dy2% */
- cmd_opv_rmlineto = 0xe9, /* dx1%,dy1%, dx2%,dy2% */
- cmd_opv_rm2lineto = 0xea, /* dx1%,dy1%, dx2%,dy2%, dx3%,dy3% */
- cmd_opv_rm3lineto = 0xeb, /* dx1%,dy1%, dx2%,dy2%, dx3%,dy3%, */
- /* [-dx2,-dy2 implicit] */
- cmd_opv_vqcurveto = 0xec, /* dy1%, dx2%[,dy2=dx2 with sign */
- /* of dy1, dx3=dy1 with sign of dx2] */
- cmd_opv_hqcurveto = 0xed, /* dx1%, [dx2=dy2 with sign */
- /* of dx1,]%dy2, [dy3=dx1 with sign */
- /* of dy2] */
- cmd_opv_closepath = 0xee, /* (nothing) */
- cmd_op_path = 0xf0, /* (see below) */
- /* The path drawing commands come in groups: */
- /* each group consists of a base command plus an offset */
- /* which is a cmd_dc_type. */
- cmd_opv_fill = 0xf0,
- cmd_opv_htfill = 0xf1,
- cmd_opv_colorfill = 0xf2,
- cmd_opv_eofill = 0xf3,
- cmd_opv_hteofill = 0xf4,
- cmd_opv_coloreofill = 0xf5,
- cmd_opv_stroke = 0xf6,
- cmd_opv_htstroke = 0xf7,
- cmd_opv_colorstroke = 0xf8
- } gx_cmd_xop;
-
- static const byte clist_segment_op_num_operands[] =
- { 2, 2, 1, 1, 6, 4, 4, 4, 4, 4, 6, 6, 2, 2, 0
- };
-
- #define cmd_misc2_op_name_strings\
- "set_flatness", "set_fill_adjust", "set_ctm", "set_line_width",\
- "set_misc2", "set_miter_limit", "set_dash", "enable_clip",\
- "disable_clip", "begin_clip", "end_clip", "set_color_space",\
- "begin_image", "image_data", "set_color", "?df?"
-
- #define cmd_segment_op_name_strings\
- "rmoveto", "rlineto", "hlineto", "vlineto",\
- "rrcurveto", "hvcurveto", "vhcurveto", "nrcurveto",\
- "rncurveto", "rmlineto", "rm2lineto", "rm3lineto",\
- "vqcurveto", "hqcurveto", "closepath", "?ef?"
-
- #define cmd_path_op_name_strings\
- "fill", "htfill", "colorfill", "eofill",\
- "hteofill", "coloreofill", "stroke", "htstroke",\
- "colorstroke", "?f9?", "?fa?", "?fb?",\
- "?fc?", "?fd?", "?fe?", "?ff?"
-
- /*
- * We represent path coordinates as 'fixed' values in a variable-length,
- * relative form (s/t = sign, x/y = integer, f/g = fraction):
- * 00sxxxxx xfffffff ffffftyy yyyygggg gggggggg
- * 01sxxxxx xxxxffff ffffffff
- * 10sxxxxx xxxxxxxx xxxxffff ffffffff
- * 110sxxxx xxxxxxff
- * 111----- (a full-size `fixed' value)
- */
- #define is_bits(d, n) !(((d) + ((fixed)1 << ((n) - 1))) & (-(fixed)1 << (n)))
-
- /* ---------------- Driver procedure support ---------------- */
-
- /* The procedures and macros defined here are used when writing */
- /* (gxclimag.c, gxclpath.c). */
-
- /* Compare and update members of the imager state. */
- #define state_neq(member)\
- cdev->imager_state.member != pis->member
- #define state_update(member)\
- cdev->imager_state.member = pis->member
-
- /* ------ Exported by gxclpath.c ------ */
-
- /* Write out the color for filling, stroking, or masking. */
- /* Return a cmd_dc_type. */
- int cmd_put_drawing_color(P3(gx_device_clist_writer *cldev,
- gx_clist_state *pcls,
- const gx_drawing_color *pdcolor));
-
- /* Clear (a) specific 'known' flag(s) for all bands. */
- /* We must do this whenever the value of a 'known' parameter changes. */
- void cmd_clear_known(P2(gx_device_clist_writer *cldev, uint known));
-
- /* Write out values of any unknown parameters. */
- #define cmd_do_write_unknown(cldev, pcls, must_know)\
- if ( ~(pcls)->known & (must_know) )\
- { int code = cmd_write_unknown(cldev, pcls, must_know);\
- if ( code < 0 ) return code;\
- }
- int cmd_write_unknown(P3(gx_device_clist_writer *cldev, gx_clist_state *pcls,
- uint must_know));
-
- /* Check whether we need to change the clipping path in the device. */
- bool cmd_check_clip_path(P2(gx_device_clist_writer *cldev,
- const gx_clip_path *pcpath));
-
- /* Construct the parameters for writing out a matrix. */
- /* We need a buffer of at least 1 + 6 * sizeof(float) bytes. */
- byte *cmd_for_matrix(P2(byte *cbuf, const gs_matrix *pmat));
-