[tex-k] dvitomp update: support \Black, \Red,
and similar colordvi commands
Eddie Kohler
kohler at CS.UCLA.EDU
Mon Feb 23 02:37:05 CET 2004
Hi all,
Attached is an update to dvitomp that I find extremely useful for colored
metapost diagrams. It supports colored text in "btex .. etex" blocks, by
parsing the "color" specials generated by the colordvi package. So for
example, this:
verbatimtex \usepackage{colordvi} etex;
label.top(btex \Red{Red} and \Blue{blue} etex, z');
will generate a multicolored label. (Only named colors are supported.)
I sent this to John Hobby a while ago; he was amenable to the patch, but
didn't have time to include it himself:
> Although it would be nice if I were to put out a new version with this
> change and lots of minor bug fixes that I know are needed, I just don't
> have time. Instead, I suggest that this change be accepted and included
> in new distributions (such as the next web2c-x.x.x) if there appears to
> be a concensus in favor of this among the maintainers of such
> distributions. If there is such a consensus, I think it would be better
> to call the new version 0.642 even though mp.web is not changing (exept
> perhaps for the version number). Otherwise, we are likely to wind up
> with competing versions where no one know which one is current.
So I'm really hoping for this patch to make it into web2c. Any comments?
Thanks,
Eddie Kohler
First attachment: the entire new dvitomp.ch.
Second attachment: a diff from the dvitomp.ch in web2c-7.4.5.
-------------- next part --------------
% dvitomp.ch for C compilation with web2c.
%
% Copyright 1990 - 1995 by AT&T Bell Laboratories.
%
% Permission to use, copy, modify, and distribute this software
% and its documentation for any purpose and without fee is hereby
% granted, provided that the above copyright notice appear in all
% copies and that both that the copyright notice and this
% permission notice and warranty disclaimer appear in supporting
% documentation, and that the names of AT&T Bell Laboratories or
% any of its entities not be used in advertising or publicity
% pertaining to distribution of the software without specific,
% written prior permission.
%
% Change file for the DVItype processor, for use with WEB to C
% This file was created by John Hobby. It is loosely based on the
% change file for the WEB to C version of dvitype (due to Howard
% Trickey and Pavel Curtis).
%
% 3/11/90 (JDH) Original version.
% 4/30/90 (JDH) Update to handle virtual fonts
% 4/16/93 (JDH) Make output go to standard output and require mpx file
% to be a command line argument.
%
% 1/18/95 (UV) Update based on dvitype.ch for web2c-6.1
% 4/13/95 (UV) Cosmetic changes for release of web2c-mp
% 10/08/95 (UV) Bug fix: need to replace abs() with floating-point arg
% by fabs() because of different definition in cpascal.h
% as reported by Dane Dwyer <dwyer at geisel.csl.uiuc.edu>.
@x [0] WEAVE: print changes only.
\pageno=\contentspagenumber \advance\pageno by 1
@y
\pageno=\contentspagenumber \advance\pageno by 1
\let\maybe=\iffalse
\def\title{DVI$\,$\lowercase{to}MP changes for C}
@z
@x [1] Duplicate banner line for use in |print_version_and_exit|.
@d banner=='% Written by DVItoMP, Version 0.64'
{the first line of the output file}
@y
@d banner=='% Written by DVItoMP, Version 0.64colordvi'
{the first line of the output file}
@d term_banner=='This is DVItoMP, Version 0.64colordvi'
{the same in the usual format, as it would be shown on a terminal}
@z
@x [3] Set up kpathsea.
procedure initialize; {this procedure gets things started properly}
var i:integer; {loop index for initializations}
begin @<Set initial values@>@/
@y
@<Define |parse_arguments|@>
procedure initialize; {this procedure gets things started properly}
var i:integer; {loop index for initializations}
begin
kpse_set_progname (argv[0]); {initialize for the filename searches}
parse_arguments;
@<Set initial values@>@/
@z
@x [5] Increase parameter(s).
@!virtual_space=10000;
@y
@!virtual_space=100000;
@z
@x [7] Remove non-local goto.
@d abort(#)==begin err_print_ln('DVItoMP abort: ',#);
history:=fatal_error; jump_out;
end
@d bad_dvi(#)==abort('Bad DVI file: ',#,'!')
@.Bad DVI file@>
@d warn(#)==begin err_print_ln('DVItoMP warning: ',#);
history:=warning_given;
end
@p procedure jump_out;
begin goto final_end;
end;
@y
@d jump_out==uexit(history)
@d abort(#)==begin err_print_ln('DVItoMP abort: ',#);
history:=fatal_error; jump_out;
end
@d bad_dvi(#)==abort('Bad DVI file: ',#,'!')
@.Bad DVI file@>
@d warn(#)==begin err_print_ln('DVItoMP warning: ',#);
history:=warning_given;
end
@z
@x [11] Permissive input.
@!ASCII_code=" ".."~"; {a subrange of the integers}
@y
@!ASCII_code=0..255; {a subrange of the integers}
@z
% [12] The text_char type is used as an array index into `xord'. The
% default type `char' produces signed integers, which are bad array
% indices in C.
@x
@d text_char == char {the data type of characters in text files}
@d first_text_char=0 {ordinal number of the smallest element of |text_char|}
@d last_text_char=127 {ordinal number of the largest element of |text_char|}
@y
@d text_char == ASCII_code {the data type of characters in text files}
@d first_text_char=0 {ordinal number of the smallest element of |text_char|}
@d last_text_char=255 {ordinal number of the largest element of |text_char|}
@z
@x [14] Fix up opening the files.
@p procedure open_mpx_file; {prepares to write text on |mpx_file|}
begin rewrite(mpx_file);
end;
@y
@p procedure open_mpx_file; {prepares to write text on |mpx_file|}
begin
cur_name := extend_filename (mpx_name, 'mpx');
rewrite (mpx_file, cur_name);
end;
@z
@x [19] More file opening.
@p procedure open_dvi_file; {prepares to read packed bytes in |dvi_file|}
begin reset(dvi_file);
if eof(dvi_file) then abort('DVI file not found');
end;
@#
function open_tfm_file:boolean; {prepares to read packed bytes in |tfm_file|}
begin reset(tfm_file,cur_name);
open_tfm_file:=(not eof(tfm_file));
end;
@#
function open_vf_file:boolean; {prepares to read packed bytes in |vf_file|}
begin reset(vf_file,cur_name);
open_vf_file:=(not eof(vf_file));
end;
@y
@p procedure open_dvi_file; {prepares to read packed bytes in |dvi_file|}
begin
cur_name := extend_filename (dvi_name, 'dvi');
resetbin(dvi_file, cur_name);
end;
@#
function open_tfm_file:boolean; {prepares to read packed bytes in |tfm_file|}
begin
tfm_file := kpse_open_file (cur_name, kpse_tfm_format);
free (cur_name); {We |xmalloc|'d this before we got called.}
open_tfm_file := true; {If we get here, we succeeded.}
end;
@#
function open_vf_file:boolean; {prepares to read packed bytes in |tfm_file|}
var @!full_name:^char;
begin
{It's ok if the \.{VF} file doesn't exist.}
full_name := kpse_find_vf (cur_name);
if full_name then begin
resetbin (vf_file, full_name);
free (cur_name);
free (full_name);
open_vf_file := true;
end else
open_vf_file := false;
end;
@z
@x [24] No arbitrary limit on filename length.
@!cur_name:packed array[1..name_length] of char; {external name,
with no lower case letters}
@y
@!cur_name:^char; {external name}
@z
@x [26] Make get_n_bytes routines work with 16-bit math.
get_two_bytes:=a*256+b;
@y
get_two_bytes:=a*intcast(256)+b;
@z
@x
get_three_bytes:=(a*256+b)*256+c;
@y
get_three_bytes:=(a*intcast(256)+b)*256+c;
@z
@x
if a<128 then signed_trio:=(a*256+b)*256+c
else signed_trio:=((a-256)*256+b)*256+c;
@y
if a<128 then signed_trio:=(a*intcast(256)+b)*256+c
else signed_trio:=((a-intcast(256))*256+b)*256+c;
@z
@x
if a<128 then signed_quad:=((a*256+b)*256+c)*256+d
else signed_quad:=(((a-256)*256+b)*256+c)*256+d;
@y
if a<128 then signed_quad:=((a*intcast(256)+b)*256+c)*256+d
else signed_quad:=(((a-256)*intcast(256)+b)*256+c)*256+d;
@z
@x [32] l.672 Bugfix: local_only is indexed by internal font numbers.
@!local_only:array [0..max_fonts] of boolean; {|font_num| meaningless?}
@y
@!local_only:array [0..max_fnums] of boolean; {|font_num| meaningless?}
@z
@x [41] Fix abs() with floating-point arg.
begin if abs(font_scaled_size[f]-font_scaled_size[ff])
@y
begin if fabs(font_scaled_size[f]-font_scaled_size[ff])
@z
@x [43] Fix abs() with floating-point arg.
if abs(font_design_size[f]-font_design_size[ff]) > font_tolerance then
@y
if fabs(font_design_size[f]-font_design_size[ff]) > font_tolerance then
@z
@x [43] Checksum warning: set history to cksum_trouble, not warning_given.
font_warn('Checksum mismatch for ')(ff)
@.Checksum mismatch@>
@y
begin err_print('DVItoMP warning: Checksum mismatch for ');
@.Checksum mismatch@>
err_print_font(ff);
if history=spotless then history:=cksum_trouble;
end
@z
@x [46] Make 16-bit TFM calculations work.
read_tfm_word; lh:=b2*256+b3;
read_tfm_word; font_bc[f]:=b0*256+b1; font_ec[f]:=b2*256+b3;
@y
read_tfm_word; lh:=b2*intcast(256)+b3;
read_tfm_word; font_bc[f]:=b0*intcast(256)+b1; font_ec[f]:=b2*intcast(256)+b3;
@z
@x
if b0<128 then tfm_check_sum:=((b0*256+b1)*256+b2)*256+b3
else tfm_check_sum:=(((b0-256)*256+b1)*256+b2)*256+b3;
@y
if b0<128 then tfm_check_sum:=((b0*intcast(256)+b1)*256+b2)*256+b3
else tfm_check_sum:=(((b0-256)*intcast(256)+b1)*256+b2)*256+b3;
@z
% [61] Don't set default_directory_name.
@x
@d default_directory_name=='TeXfonts:' {change this to the correct name}
@d default_directory_name_length=9 {change this to the correct length}
@<Glob...@>=
@!default_directory:packed array[1..default_directory_name_length] of char;
@y
There is no single |default_directory| with C.
@z
@x [62] Remove initialization of default_directory.
@ @<Set init...@>=
default_directory:=default_directory_name;
@y
@ (No initialization needs to be done. Keep this module to preserve
numbering.)
@z
@x [63] Dynamically allocate cur_name, don't add .vf.
for k:=1 to name_length do cur_name[k]:=' ';
if area_length[f]=0 then
begin for k:=1 to default_directory_name_length do
cur_name[k]:=default_directory[k];
l:=default_directory_name_length;
end
else l:=0;
for k:=font_name[f] to font_name[f+1]-1 do
begin incr(l);
if l+3>name_length then
abort('DVItoMP capacity exceeded (max font name length=',
name_length:1,')!');
@.DVItoMP capacity exceeded...@>
if (names[k]>="a")and(names[k]<="z") then
cur_name[l]:=xchr[names[k]-@'40]
else cur_name[l]:=xchr[names[k]];
end;
cur_name[l+1]:='.'; cur_name[l+2]:='V'; cur_name[l+3]:='F'
@y
{This amounts to a string copy. }
cur_name := xmalloc_array (char, font_name[f+1] - font_name[f]);
for k:=font_name[f] to font_name[f+1]-1 do begin
cur_name[k - font_name[f]] := xchr[names[k]];
end;
cur_name[font_name[f+1] - font_name[f]] := 0;
@z
@x [64] Since we didn't add .vf, don't need to change it to .tfm.
l:=area_length[f];
if l=0 then l:=default_directory_name_length;
l:=l+font_name[f+1]-font_name[f];
if l+4>name_length then
abort('DVItoMP capacity exceeded (max font name length=',
name_length:1,')!');
@.DVItoMP capacity exceeded...@>
cur_name[l+2]:='T'; cur_name[l+3]:='F'; cur_name[l+4]:='M'
@y
do_nothing
@z
@x [75] Handle colored text. (COLOR)
print_ln('vardef _s(expr _t,_f,_m,_x,_y)=');
print_ln(' addto _p also _t infont _f scaled _m shifted (_x,_y); enddef;');
@y
print_ln('vardef _s(expr _t,_f,_m,_x,_y)(text _c)=');
print_ln(' addto _p also _t infont _f scaled _m shifted (_x,_y) _c; enddef;');
@z
@x [78] Fix printing of real numbers, and add color (COLOR).
if (abs(x)>=4096.0)or(abs(y)>=4096.0)or(m>=4096.0)or(m<0) then
begin warn('text scaled ',m:1:1,@|
' at (',x:1:1,',',y:1:1,') is out of range');
end_char_string(60);
end
else end_char_string(40);
print_ln(',_n',str_f:1,',',m:1:5,',',x:1:4,',',y:1:4,');');
@y
if (fabs(x)>=4096.0)or(fabs(y)>=4096.0)or(m>=4096.0)or(m<0) then
begin warn('text is out of range');
end_char_string(60);
end
else end_char_string(40);
print(',_n',str_f:1,',');
fprint_real(mpx_file, m,1,5); print(',');
fprint_real(mpx_file, x,1,4); print(',');
fprint_real(mpx_file, y,1,4); print(',');@/
@<Print a \.{withcolor} specifier if appropriate@>@/
print_ln(');');
@z
@x [79] Fix _r definition (COLOR).
print_ln('vardef _r(expr _a,_w) =');
print_ln(' addto _p doublepath _a withpen pencircle scaled _w enddef;');
@y
print_ln('vardef _r(expr _a,_w)(text _t) =');
print_ln(' addto _p doublepath _a withpen pencircle scaled _w _t enddef;');
@z
@x [79] Another fix for printing of real numbers, plus colors (COLOR).
if (abs(xx1)>=4096.0)or(abs(yy1)>=4096.0)or@|
(abs(xx2)>=4096.0)or(abs(yy2)>=4096.0)or(ww>=4096.0) then
warn('hrule or vrule near (',xx1:1:1,',',yy1:1:1,') is out of range');
print_ln('_r((',xx1:1:4,',',yy1:1:4,')..(',xx2:1:4,',',yy2:1:4,
'), ',ww:1:4,');');
@y
if (fabs(xx1)>=4096.0)or(fabs(yy1)>=4096.0)or@|
(fabs(xx2)>=4096.0)or(fabs(yy2)>=4096.0)or(ww>=4096.0) then
warn('hrule or vrule is out of range');
print('_r((');
fprint_real(mpx_file, xx1,1,4); print(',');
fprint_real(mpx_file, yy1,1,4); print(')..(');
fprint_real(mpx_file, xx2,1,4); print(',');
fprint_real(mpx_file, yy2,1,4); print('), ');
fprint_real(mpx_file, ww,1,4); print(',');
@<Print a \.{withcolor} specifier if appropriate@>@/
print_ln(');');
@z
@x [80] Yet another fix for printing of real numbers.
print_ln('setbounds _p to (0,',dd:1:4,')--(',w:1:4,',',dd:1:4,')--');
print_ln(' (',w:1:4,',',h:1:4,')--(0,',h:1:4,')--cycle;')
@y
print('setbounds _p to (0,');
fprint_real(mpx_file, dd,1,4); print(')--(');
fprint_real(mpx_file, w,1,4); print(',');
fprint_real(mpx_file, dd,1,4); print_ln(')--');@/
print(' (');
fprint_real(mpx_file, w,1,4); print(',');
fprint_real(mpx_file, h,1,4); print(')--(0,');
fprint_real(mpx_file, h,1,4); print_ln(')--cycle;')
@z
@x [88] push and pop commands (COLOR).
@p procedure do_push;
@y
@p @<Declare procedures to handle color commands@>
procedure do_push;
@z
@x [94] Additional cases for DVI commands (COLOR).
four_cases(xxx1): for k:=1 to p do
down_the_drain:=get_byte;
@y
four_cases(xxx1): do_xxx(p);
@z
@x [98] Main program.
print_ln(banner);
@y
print (banner);
print_ln (version_string);
@z
@x Exit with appropriate status.
final_end:end.
@y
if history<=cksum_trouble then uexit(0)
else uexit(history);
end.
@z
@x [103] System-dependent changes.
This section should be replaced, if necessary, by changes to the program
that are necessary to make \.{DVItoMP} work at a particular installation.
It is usually best to design your change file so that all changes to
previous sections preserve the section numbering; then everybody's version
will be consistent with the printed program. More extensive changes,
which introduce new sections, can be inserted here; then only the index
itself will get a new section number.
@^system dependencies@>
@y
Parse a Unix-style command line.
@d argument_is (#) == (strcmp (long_options[option_index].name, #) = 0)
@<Define |parse_arguments|@> =
procedure parse_arguments;
const n_options = 2; {Pascal won't count array lengths for us.}
var @!long_options: array[0..n_options] of getopt_struct;
@!getopt_return_val: integer;
@!option_index: c_int_type;
@!current_option: 0..n_options;
begin
@<Define the option table@>;
repeat
getopt_return_val := getopt_long_only (argc, argv, '', long_options,
address_of (option_index));
if getopt_return_val = -1 then begin
{End of arguments; we exit the loop below.} ;
end else if getopt_return_val = "?" then begin
usage ('dvitomp');
end else if argument_is ('help') then begin
usage_help (DVITOMP_HELP);
end else if argument_is ('version') then begin
print_version_and_exit (term_banner, 'AT&T Bell Laboraties', 'John Hobby');
end; {Else it was a flag; |getopt| has already done the assignment.}
until getopt_return_val = -1;
{Now |optind| is the index of first non-option on the command line.
We must have one or two remaining arguments.}
if (optind + 1 <> argc) and (optind + 2 <> argc) then begin
write_ln (stderr, 'dvitomp: Need one or two file arguments.');
usage ('dvitomp');
end;
dvi_name := cmdline (optind);
if optind + 2 <= argc then begin
mpx_name := cmdline (optind + 1); {The user specified the other name.}
end else begin
{User did not specify the other name; default it from the first.}
mpx_name := basename_change_suffix (dvi_name, '.dvi', '.mpx');
end;
end;
@ Here are the options we allow. The first is one of the standard GNU options.
@.-help@>
@<Define the option...@> =
current_option := 0;
long_options[current_option].name := 'help';
long_options[current_option].has_arg := 0;
long_options[current_option].flag := 0;
long_options[current_option].val := 0;
incr (current_option);
@ Another of the standard options.
@.-version@>
@<Define the option...@> =
long_options[current_option].name := 'version';
long_options[current_option].has_arg := 0;
long_options[current_option].flag := 0;
long_options[current_option].val := 0;
incr (current_option);
@ An element with all zeros always ends the list.
@<Define the option...@> =
long_options[current_option].name := 0;
long_options[current_option].has_arg := 0;
long_options[current_option].flag := 0;
long_options[current_option].val := 0;
@ Global filenames.
@<Global...@> =
@!dvi_name, @!mpx_name:c_string;
@* Color support.
These changes support \.{dvips}-style ``\.{color push NAME}'' and
``\.{color pop}'' specials. We store a list of named colors, sorted by
name, and decorate the relevant drawing commands with ``\.{withcolor
(r,g,b)}'' specifiers while a color is defined.
@ First we declare a record for color types.
@<Types...@> =
@!named_color_record=record@;@/
@!name:c_string; {color name}
@!red,green,blue:real; {red, green, blue components}
end;
@ A constant bounding the size of the named-color array.
@<Constants...@> =
@!max_named_colors=100; {maximum number of distinct named colors}
@ Declare the named-color array itself.
@<Globals...@> =
@!named_colors: array[1..max_named_colors] of named_color_record;
{stores information about named colors, in sorted order by name}
@!num_named_colors:integer; {number of elements of |named_colors| that are valid}
@ This function, used only during initialization, defines a named color.
@<Define |parse_arguments|@> =
procedure def_named_color(n: c_string; r,g,b: real);
begin
if num_named_colors = max_named_colors then
abort('too many named color definitions')
else if (num_named_colors > 0) and (strcmp(n, named_colors[num_named_colors].name) <= 0) then
abort('named colors added out of alphabetical order');
incr(num_named_colors);
named_colors[num_named_colors].name := n;
named_colors[num_named_colors].red := r;
named_colors[num_named_colors].green := g;
named_colors[num_named_colors].blue := b;
end;
@ During the initialization phase, we define values for all the named
colors defined in \.{colordvi.tex}. CMYK-to-RGB conversion by GhostScript.
@<Set initial values@> =
num_named_colors := 0;
def_named_color('Apricot', 1.0, 0.680006, 0.480006);
def_named_color('Aquamarine', 0.180006, 1.0, 0.7);
def_named_color('Bittersweet', 0.760012, 0.0100122, 0.0);
def_named_color('Black', 0.0, 0.0, 0.0);
def_named_color('Blue', 0.0, 0.0, 1.0);
def_named_color('BlueGreen', 0.15, 1.0, 0.669994);
def_named_color('BlueViolet', 0.1, 0.05, 0.960012);
def_named_color('BrickRed', 0.719994, 0.0, 0.0);
def_named_color('Brown', 0.4, 0.0, 0.0);
def_named_color('BurntOrange', 1.0, 0.489988, 0.0);
def_named_color('CadetBlue', 0.380006, 0.430006, 0.769994);
def_named_color('CarnationPink', 1.0, 0.369994, 1.0);
def_named_color('Cerulean', 0.0600122, 0.889988, 1.0);
def_named_color('CornflowerBlue', 0.35, 0.869994, 1.0);
def_named_color('Cyan', 0.0, 1.0, 1.0);
def_named_color('Dandelion', 1.0, 0.710012, 0.160012);
def_named_color('DarkOrchid', 0.6, 0.2, 0.8);
def_named_color('Emerald', 0.0, 1.0, 0.5);
def_named_color('ForestGreen', 0.0, 0.880006, 0.0);
def_named_color('Fuchsia', 0.45, 0.00998169, 0.919994);
def_named_color('Goldenrod', 1.0, 0.9, 0.160012);
def_named_color('Gray', 0.5, 0.5, 0.5);
def_named_color('Green', 0.0, 1.0, 0.0);
def_named_color('GreenYellow', 0.85, 1.0, 0.310012);
def_named_color('JungleGreen', 0.0100122, 1.0, 0.480006);
def_named_color('Lavender', 1.0, 0.519994, 1.0);
def_named_color('LimeGreen', 0.5, 1.0, 0.0);
def_named_color('Magenta', 1.0, 0.0, 1.0);
def_named_color('Mahogany', 0.65, 0.0, 0.0);
def_named_color('Maroon', 0.680006, 0.0, 0.0);
def_named_color('Melon', 1.0, 0.539988, 0.5);
def_named_color('MidnightBlue', 0.0, 0.439988, 0.569994);
def_named_color('Mulberry', 0.640018, 0.0800061, 0.980006);
def_named_color('NavyBlue', 0.0600122, 0.460012, 1.0);
def_named_color('OliveGreen', 0.0, 0.6, 0.0);
def_named_color('Orange', 1.0, 0.389988, 0.130006);
def_named_color('OrangeRed', 1.0, 0.0, 0.5);
def_named_color('Orchid', 0.680006, 0.360012, 1.0);
def_named_color('Peach', 1.0, 0.5, 0.3);
def_named_color('Periwinkle', 0.430006, 0.45, 1.0);
def_named_color('PineGreen', 0.0, 0.75, 0.160012);
def_named_color('Plum', 0.5, 0.0, 1.0);
def_named_color('ProcessBlue', 0.0399878, 1.0, 1.0);
def_named_color('Purple', 0.55, 0.139988, 1.0);
def_named_color('RawSienna', 0.55, 0.0, 0.0);
def_named_color('Red', 1.0, 0.0, 0.0);
def_named_color('RedOrange', 1.0, 0.230006, 0.130006);
def_named_color('RedViolet', 0.590018, 0.0, 0.660012);
def_named_color('Rhodamine', 1.0, 0.180006, 1.0);
def_named_color('RoyalBlue', 0.0, 0.5, 1.0);
def_named_color('RoyalPurple', 0.25, 0.1, 1.0);
def_named_color('RubineRed', 1.0, 0.0, 0.869994);
def_named_color('Salmon', 1.0, 0.469994, 0.619994);
def_named_color('SeaGreen', 0.310012, 1.0, 0.5);
def_named_color('Sepia', 0.3, 0.0, 0.0);
def_named_color('SkyBlue', 0.380006, 1.0, 0.880006);
def_named_color('SpringGreen', 0.739988, 1.0, 0.239988);
def_named_color('Tan', 0.860012, 0.580006, 0.439988);
def_named_color('TealBlue', 0.119994, 0.980006, 0.640018);
def_named_color('Thistle', 0.880006, 0.410012, 1.0);
def_named_color('Turquoise', 0.15, 1.0, 0.8);
def_named_color('Violet', 0.210012, 0.119994, 1.0);
def_named_color('VioletRed', 1.0, 0.189988, 1.0);
def_named_color('White', 1.0, 1.0, 1.0);
def_named_color('WildStrawberry', 1.0, 0.0399878, 0.610012);
def_named_color('Yellow', 1.0, 1.0, 0.0);
def_named_color('YellowGreen', 0.560012, 1.0, 0.260012);
def_named_color('YellowOrange', 1.0, 0.580006, 0.0);
@ Color commands get a separate warning procedure. |warn| sets |history :=
warning_given|, which causes a nonzero exit status; but color errors are
trivial and should leave the exit status zero.
@d color_warn(#)==begin err_print_ln('DVItoMP warning: ',#); if history < warning_given then history := cksum_trouble; end
@ The |do_xxx| procedure handles DVI specials (defined with the
|xxx1...xxx4| commands).
@<Declare procedures to handle color commands@> =
procedure do_xxx(p: integer);
label 9999; {exit procedure}
const bufsiz = 256;
var buf: packed array[0..bufsiz] of eight_bits;
l, r, m, k, len: integer;
found: boolean;
begin
len := 0;
while (p > 0) and (len < bufsiz) do begin
buf[len] := get_byte;
decr(p); incr(len);
end;
@<Check whether |buf| contains a color command; if not, |goto 9999|@>
if p > 0 then begin
color_warn('long "color" special ignored'); goto 9999; end;
if @<|buf| contains a color pop command@> then begin
@<Handle a color pop command@>
end else if @<|buf| contains a color push command@> then begin
@<Handle a color push command@>
end else begin
color_warn('unknown "color" special ignored'); goto 9999; end;
9999: for k := 1 to p do down_the_drain := get_byte;
end;
@
@<Check whether |buf| contains a color command; if not, |goto 9999|@> =
if (len <= 5) or (buf[0] <> "c") or (buf[1] <> "o") or (buf[2] <> "l")
or (buf[3] <> "o") or (buf[4] <> "r") or (buf[5] <> " ")
then goto 9999;
@
@<|buf| contains a color push command@> =
(len >= 11) and (buf[6] = "p") and (buf[7] = "u") and (buf[8] = "s") and (buf[9] = "h") and (buf[10] = " ")
@
@<|buf| contains a color pop command@> =
(len = 9) and (buf[6] = "p") and (buf[7] = "o") and (buf[8] = "p")
@ The \.{color push} and \.{pop} commands imply a color stack, so we need a
global variable to hold that stack.
@<Constants...@> =
max_color_stack_depth=10; {maximum depth of saved color stack}
@ Here's the actual stack variables.
@<Globals...@> =
color_stack_depth: integer; {current depth of saved color stack}
color_stack: array[1..max_color_stack_depth] of named_color_record; {saved color stack}
@ Initialize the stack to empty.
@<Set initial values@> =
color_stack_depth := 0;
@ \.{color pop} just pops the stack.
@<Handle a color pop command@> =
finish_last_char;
if color_stack_depth > 0 then
decr(color_stack_depth)
else
color_warn('more "color pop" specials than "color push" specials');
@ \.{color push} pushes a color onto the stack. We binary-search the
|named_colors| array, then push the found color onto the stack.
@<Handle a color push command@> =
finish_last_char;
if color_stack_depth >= max_color_stack_depth then
abort('color stack overflow');
incr(color_stack_depth);
{ I don't know how to do string operations in Pascal. }
for k := 11 to len - 1 do begin
buf[k - 11] := xchr[buf[k]];
end;
buf[len - 11] := 0;
l := 1; r := num_named_colors;
found := false;
while (l <= r) and not found do begin
m := (l + r) / 2;
k := strcmp(buf, named_colors[m].name);
if k = 0 then begin
color_stack[color_stack_depth].red := named_colors[m].red;
color_stack[color_stack_depth].green := named_colors[m].green;
color_stack[color_stack_depth].blue := named_colors[m].blue;
found := true;
end else if k < 0 then
r := m - 1
else
l := m + 1;
end;
if not found then begin
color_warn('unknown color in "color push" command, pushing black');
color_stack[color_stack_depth].red := 0;
color_stack[color_stack_depth].green := 0;
color_stack[color_stack_depth].blue := 0;
end;
@ Last but not least, this code snippet prints a \.{withcolor} specifier
for the top of the color stack, if the stack is nonempty.
@<Print a \.{withcolor} specifier if appropriate@> =
if color_stack_depth > 0 then begin
print(' withcolor (');
fprint_real(mpx_file, color_stack[color_stack_depth].red,1,4);
print(', ');
fprint_real(mpx_file, color_stack[color_stack_depth].green,1,4);
print(', ');
fprint_real(mpx_file, color_stack[color_stack_depth].blue,1,4);
print(')');
end;
@z
-------------- next part --------------
--- texk/web2c/dvitomp.ch.orig 2004-02-22 17:14:13.000000000 -0800
+++ texk/web2c/dvitomp.ch 2004-02-22 17:17:16.000000000 -0800
@@ -40,9 +40,9 @@
@d banner=='% Written by DVItoMP, Version 0.64'
{the first line of the output file}
@y
- at d banner=='% Written by DVItoMP, Version 0.64'
+ at d banner=='% Written by DVItoMP, Version 0.64colordvi'
{the first line of the output file}
- at d term_banner=='This is DVItoMP, Version 0.64'
+ at d term_banner=='This is DVItoMP, Version 0.64colordvi'
{the same in the usual format, as it would be shown on a terminal}
@z
@@ -302,7 +302,15 @@
do_nothing
@z
- at x [78] Fix printing of real numbers.
+ at x [75] Handle colored text. (COLOR)
+print_ln('vardef _s(expr _t,_f,_m,_x,_y)=');
+print_ln(' addto _p also _t infont _f scaled _m shifted (_x,_y); enddef;');
+ at y
+print_ln('vardef _s(expr _t,_f,_m,_x,_y)(text _c)=');
+print_ln(' addto _p also _t infont _f scaled _m shifted (_x,_y) _c; enddef;');
+ at z
+
+ at x [78] Fix printing of real numbers, and add color (COLOR).
if (abs(x)>=4096.0)or(abs(y)>=4096.0)or(m>=4096.0)or(m<0) then
begin warn('text scaled ',m:1:1,@|
' at (',x:1:1,',',y:1:1,') is out of range');
@@ -319,11 +327,20 @@
print(',_n',str_f:1,',');
fprint_real(mpx_file, m,1,5); print(',');
fprint_real(mpx_file, x,1,4); print(',');
- fprint_real(mpx_file, y,1,4);
+ fprint_real(mpx_file, y,1,4); print(',');@/
+ @<Print a \.{withcolor} specifier if appropriate@>@/
print_ln(');');
@z
- at x [79] Another fix for printing of real numbers.
+ at x [79] Fix _r definition (COLOR).
+ print_ln('vardef _r(expr _a,_w) =');
+ print_ln(' addto _p doublepath _a withpen pencircle scaled _w enddef;');
+ at y
+ print_ln('vardef _r(expr _a,_w)(text _t) =');
+ print_ln(' addto _p doublepath _a withpen pencircle scaled _w _t enddef;');
+ at z
+
+ at x [79] Another fix for printing of real numbers, plus colors (COLOR).
if (abs(xx1)>=4096.0)or(abs(yy1)>=4096.0)or@|
(abs(xx2)>=4096.0)or(abs(yy2)>=4096.0)or(ww>=4096.0) then
warn('hrule or vrule near (',xx1:1:1,',',yy1:1:1,') is out of range');
@@ -338,7 +355,8 @@
fprint_real(mpx_file, yy1,1,4); print(')..(');
fprint_real(mpx_file, xx2,1,4); print(',');
fprint_real(mpx_file, yy2,1,4); print('), ');
- fprint_real(mpx_file, ww,1,4);
+ fprint_real(mpx_file, ww,1,4); print(',');
+ @<Print a \.{withcolor} specifier if appropriate@>@/
print_ln(');');
@z
@@ -356,6 +374,20 @@
fprint_real(mpx_file, h,1,4); print_ln(')--cycle;')
@z
+ at x [88] push and pop commands (COLOR).
+ at p procedure do_push;
+ at y
+ at p @<Declare procedures to handle color commands@>
+procedure do_push;
+ at z
+
+ at x [94] Additional cases for DVI commands (COLOR).
+four_cases(xxx1): for k:=1 to p do
+ down_the_drain:=get_byte;
+ at y
+four_cases(xxx1): do_xxx(p);
+ at z
+
@x [98] Main program.
print_ln(banner);
@y
@@ -461,4 +493,249 @@
@<Global...@> =
@!dvi_name, @!mpx_name:c_string;
+
+
+
+@* Color support.
+These changes support \.{dvips}-style ``\.{color push NAME}'' and
+``\.{color pop}'' specials. We store a list of named colors, sorted by
+name, and decorate the relevant drawing commands with ``\.{withcolor
+(r,g,b)}'' specifiers while a color is defined.
+
+@ First we declare a record for color types.
+
+@<Types...@> =
+@!named_color_record=record@;@/
+ @!name:c_string; {color name}
+ @!red,green,blue:real; {red, green, blue components}
+ end;
+
+@ A constant bounding the size of the named-color array.
+
+@<Constants...@> =
+@!max_named_colors=100; {maximum number of distinct named colors}
+
+@ Declare the named-color array itself.
+
+@<Globals...@> =
+@!named_colors: array[1..max_named_colors] of named_color_record;
+ {stores information about named colors, in sorted order by name}
+@!num_named_colors:integer; {number of elements of |named_colors| that are valid}
+
+@ This function, used only during initialization, defines a named color.
+
+@<Define |parse_arguments|@> =
+procedure def_named_color(n: c_string; r,g,b: real);
+ begin
+ if num_named_colors = max_named_colors then
+ abort('too many named color definitions')
+ else if (num_named_colors > 0) and (strcmp(n, named_colors[num_named_colors].name) <= 0) then
+ abort('named colors added out of alphabetical order');
+ incr(num_named_colors);
+ named_colors[num_named_colors].name := n;
+ named_colors[num_named_colors].red := r;
+ named_colors[num_named_colors].green := g;
+ named_colors[num_named_colors].blue := b;
+ end;
+
+@ During the initialization phase, we define values for all the named
+colors defined in \.{colordvi.tex}. CMYK-to-RGB conversion by GhostScript.
+
+@<Set initial values@> =
+num_named_colors := 0;
+def_named_color('Apricot', 1.0, 0.680006, 0.480006);
+def_named_color('Aquamarine', 0.180006, 1.0, 0.7);
+def_named_color('Bittersweet', 0.760012, 0.0100122, 0.0);
+def_named_color('Black', 0.0, 0.0, 0.0);
+def_named_color('Blue', 0.0, 0.0, 1.0);
+def_named_color('BlueGreen', 0.15, 1.0, 0.669994);
+def_named_color('BlueViolet', 0.1, 0.05, 0.960012);
+def_named_color('BrickRed', 0.719994, 0.0, 0.0);
+def_named_color('Brown', 0.4, 0.0, 0.0);
+def_named_color('BurntOrange', 1.0, 0.489988, 0.0);
+def_named_color('CadetBlue', 0.380006, 0.430006, 0.769994);
+def_named_color('CarnationPink', 1.0, 0.369994, 1.0);
+def_named_color('Cerulean', 0.0600122, 0.889988, 1.0);
+def_named_color('CornflowerBlue', 0.35, 0.869994, 1.0);
+def_named_color('Cyan', 0.0, 1.0, 1.0);
+def_named_color('Dandelion', 1.0, 0.710012, 0.160012);
+def_named_color('DarkOrchid', 0.6, 0.2, 0.8);
+def_named_color('Emerald', 0.0, 1.0, 0.5);
+def_named_color('ForestGreen', 0.0, 0.880006, 0.0);
+def_named_color('Fuchsia', 0.45, 0.00998169, 0.919994);
+def_named_color('Goldenrod', 1.0, 0.9, 0.160012);
+def_named_color('Gray', 0.5, 0.5, 0.5);
+def_named_color('Green', 0.0, 1.0, 0.0);
+def_named_color('GreenYellow', 0.85, 1.0, 0.310012);
+def_named_color('JungleGreen', 0.0100122, 1.0, 0.480006);
+def_named_color('Lavender', 1.0, 0.519994, 1.0);
+def_named_color('LimeGreen', 0.5, 1.0, 0.0);
+def_named_color('Magenta', 1.0, 0.0, 1.0);
+def_named_color('Mahogany', 0.65, 0.0, 0.0);
+def_named_color('Maroon', 0.680006, 0.0, 0.0);
+def_named_color('Melon', 1.0, 0.539988, 0.5);
+def_named_color('MidnightBlue', 0.0, 0.439988, 0.569994);
+def_named_color('Mulberry', 0.640018, 0.0800061, 0.980006);
+def_named_color('NavyBlue', 0.0600122, 0.460012, 1.0);
+def_named_color('OliveGreen', 0.0, 0.6, 0.0);
+def_named_color('Orange', 1.0, 0.389988, 0.130006);
+def_named_color('OrangeRed', 1.0, 0.0, 0.5);
+def_named_color('Orchid', 0.680006, 0.360012, 1.0);
+def_named_color('Peach', 1.0, 0.5, 0.3);
+def_named_color('Periwinkle', 0.430006, 0.45, 1.0);
+def_named_color('PineGreen', 0.0, 0.75, 0.160012);
+def_named_color('Plum', 0.5, 0.0, 1.0);
+def_named_color('ProcessBlue', 0.0399878, 1.0, 1.0);
+def_named_color('Purple', 0.55, 0.139988, 1.0);
+def_named_color('RawSienna', 0.55, 0.0, 0.0);
+def_named_color('Red', 1.0, 0.0, 0.0);
+def_named_color('RedOrange', 1.0, 0.230006, 0.130006);
+def_named_color('RedViolet', 0.590018, 0.0, 0.660012);
+def_named_color('Rhodamine', 1.0, 0.180006, 1.0);
+def_named_color('RoyalBlue', 0.0, 0.5, 1.0);
+def_named_color('RoyalPurple', 0.25, 0.1, 1.0);
+def_named_color('RubineRed', 1.0, 0.0, 0.869994);
+def_named_color('Salmon', 1.0, 0.469994, 0.619994);
+def_named_color('SeaGreen', 0.310012, 1.0, 0.5);
+def_named_color('Sepia', 0.3, 0.0, 0.0);
+def_named_color('SkyBlue', 0.380006, 1.0, 0.880006);
+def_named_color('SpringGreen', 0.739988, 1.0, 0.239988);
+def_named_color('Tan', 0.860012, 0.580006, 0.439988);
+def_named_color('TealBlue', 0.119994, 0.980006, 0.640018);
+def_named_color('Thistle', 0.880006, 0.410012, 1.0);
+def_named_color('Turquoise', 0.15, 1.0, 0.8);
+def_named_color('Violet', 0.210012, 0.119994, 1.0);
+def_named_color('VioletRed', 1.0, 0.189988, 1.0);
+def_named_color('White', 1.0, 1.0, 1.0);
+def_named_color('WildStrawberry', 1.0, 0.0399878, 0.610012);
+def_named_color('Yellow', 1.0, 1.0, 0.0);
+def_named_color('YellowGreen', 0.560012, 1.0, 0.260012);
+def_named_color('YellowOrange', 1.0, 0.580006, 0.0);
+
+@ Color commands get a separate warning procedure. |warn| sets |history :=
+warning_given|, which causes a nonzero exit status; but color errors are
+trivial and should leave the exit status zero.
+
+ at d color_warn(#)==begin err_print_ln('DVItoMP warning: ',#); if history < warning_given then history := cksum_trouble; end
+
+@ The |do_xxx| procedure handles DVI specials (defined with the
+|xxx1...xxx4| commands).
+
+@<Declare procedures to handle color commands@> =
+procedure do_xxx(p: integer);
+label 9999; {exit procedure}
+const bufsiz = 256;
+var buf: packed array[0..bufsiz] of eight_bits;
+ l, r, m, k, len: integer;
+ found: boolean;
+begin
+ len := 0;
+ while (p > 0) and (len < bufsiz) do begin
+ buf[len] := get_byte;
+ decr(p); incr(len);
+ end;
+ @<Check whether |buf| contains a color command; if not, |goto 9999|@>
+ if p > 0 then begin
+ color_warn('long "color" special ignored'); goto 9999; end;
+ if @<|buf| contains a color pop command@> then begin
+ @<Handle a color pop command@>
+ end else if @<|buf| contains a color push command@> then begin
+ @<Handle a color push command@>
+ end else begin
+ color_warn('unknown "color" special ignored'); goto 9999; end;
+9999: for k := 1 to p do down_the_drain := get_byte;
+end;
+
+@
+
+@<Check whether |buf| contains a color command; if not, |goto 9999|@> =
+if (len <= 5) or (buf[0] <> "c") or (buf[1] <> "o") or (buf[2] <> "l")
+ or (buf[3] <> "o") or (buf[4] <> "r") or (buf[5] <> " ")
+ then goto 9999;
+
+@
+
+@<|buf| contains a color push command@> =
+(len >= 11) and (buf[6] = "p") and (buf[7] = "u") and (buf[8] = "s") and (buf[9] = "h") and (buf[10] = " ")
+
+@
+
+@<|buf| contains a color pop command@> =
+(len = 9) and (buf[6] = "p") and (buf[7] = "o") and (buf[8] = "p")
+
+@ The \.{color push} and \.{pop} commands imply a color stack, so we need a
+global variable to hold that stack.
+
+@<Constants...@> =
+max_color_stack_depth=10; {maximum depth of saved color stack}
+
+@ Here's the actual stack variables.
+
+@<Globals...@> =
+color_stack_depth: integer; {current depth of saved color stack}
+color_stack: array[1..max_color_stack_depth] of named_color_record; {saved color stack}
+
+@ Initialize the stack to empty.
+
+@<Set initial values@> =
+color_stack_depth := 0;
+
+@ \.{color pop} just pops the stack.
+
+@<Handle a color pop command@> =
+finish_last_char;
+if color_stack_depth > 0 then
+ decr(color_stack_depth)
+else
+ color_warn('more "color pop" specials than "color push" specials');
+
+@ \.{color push} pushes a color onto the stack. We binary-search the
+|named_colors| array, then push the found color onto the stack.
+
+@<Handle a color push command@> =
+finish_last_char;
+if color_stack_depth >= max_color_stack_depth then
+ abort('color stack overflow');
+incr(color_stack_depth);
+{ I don't know how to do string operations in Pascal. }
+for k := 11 to len - 1 do begin
+ buf[k - 11] := xchr[buf[k]];
+end;
+buf[len - 11] := 0;
+l := 1; r := num_named_colors;
+found := false;
+while (l <= r) and not found do begin
+ m := (l + r) / 2;
+ k := strcmp(buf, named_colors[m].name);
+ if k = 0 then begin
+ color_stack[color_stack_depth].red := named_colors[m].red;
+ color_stack[color_stack_depth].green := named_colors[m].green;
+ color_stack[color_stack_depth].blue := named_colors[m].blue;
+ found := true;
+ end else if k < 0 then
+ r := m - 1
+ else
+ l := m + 1;
+end;
+if not found then begin
+ color_warn('unknown color in "color push" command, pushing black');
+ color_stack[color_stack_depth].red := 0;
+ color_stack[color_stack_depth].green := 0;
+ color_stack[color_stack_depth].blue := 0;
+end;
+
+@ Last but not least, this code snippet prints a \.{withcolor} specifier
+for the top of the color stack, if the stack is nonempty.
+
+@<Print a \.{withcolor} specifier if appropriate@> =
+if color_stack_depth > 0 then begin
+ print(' withcolor (');
+ fprint_real(mpx_file, color_stack[color_stack_depth].red,1,4);
+ print(', ');
+ fprint_real(mpx_file, color_stack[color_stack_depth].green,1,4);
+ print(', ');
+ fprint_real(mpx_file, color_stack[color_stack_depth].blue,1,4);
+ print(')');
+end;
+
@z
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