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Diffstat (limited to 'gs/src/gxclpath.h')
| -rw-r--r-- | gs/src/gxclpath.h | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/gs/src/gxclpath.h b/gs/src/gxclpath.h new file mode 100644 index 000000000..e84a1baea --- /dev/null +++ b/gs/src/gxclpath.h @@ -0,0 +1,201 @@ +/* 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_opv_put_params = 0xdf, /* (nothing) */ + 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", "set_params" + +#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)\ + ( ( ~(pcls)->known & (must_know) )\ + ? cmd_write_unknown(cldev, pcls, must_know) : 0 ) +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)); |