Implementing color support in troff, pic, grops, and grohtml. These

changes are based on a major patch provided by Gaius Mulley
<gaius@glam.ac.uk>.

New request: `defcolor', supporting rgb, cmy, cmyk, and gray
definitions with both hex values and fractions.

New escapes: \m and \M for drawing and background color,
respectively.  This corresponds to the troff output commands `m'
and `DF'.

groff and troff accept command line switch `-c' to disable color
output (which is automatically disabled in compatibility mode).

New scaling indicator `f' for fractions (1f = 65536u).

New conditional operator `m' to test for defined colors with `if'
and `ie'.

New keywords `color' (or `colour', `colored', `coloured'), `outline'
(or `outlined'), and `shaded' added to pic.

* src/include/color.h: New file.
* src/include/driver.h: Include it.
* src/include/printer.h: Include color.h.
(environment): New members `col' and `fill'.
(printer): Remove `adjust_arc_center' member function.
* src/include/Makefile.sub: Updated.

* src/libs/libdriver/input.cc (do_file): Initialize `env.col' and
`env.fill'.
Handle `m' and `DF' troff commands.
* src/libs/libgroff/color.cc: New file.
* src/libs/libgroff/Makefile.sub: Updated.

* src/preproc/html/pre-html.cc (IMAGE_BORDER_PIXELS): Set to 2.
(stop): Removed.
(createImage): Fix computation of `y2'.
Use `pnmcrop' also.
(buffer::write_file_html): Remove calls to `stop'.

* src/preproc/pic/common.h (common_output): New abstract function
members `set_color', `reset_color', `get_last_filled', and
`get_outline_color'.
* src/preproc/pic/object.h: Add `IS_SHADED' and `IS_OUTLINED'.
(object_spec): Add members `shaded' and `outlined'.
* src/preproc/pic/output.h (output): `command' is now abstract.
New function members `set_color', `reset_color', `get_last_filled',
and `get_outline_color'.
* src/preproc/pic/lex.cc (lookup_keyword): Recognize `colo[u]r[ed]',
`outline[d]', and `shaded'.
* src/preproc/pic/object.cc (output::command): Removed.
(output::set_location):Moved to output.h.
(graphic_object): Add protected members `outline_color' and
`color_fill'.
Add member functions `set_outline_color', `get_outline_color', and
`set_fill_color'.
(closed_object): Add member function `set_fill_color'.
Add member `color_fill'.
(graphic_object::print_text): Use `out->set_color' and
`out->reset_color'.
(box_object::print, ellipse_object::print, circle_object::print,
line_object::print, spline_object::print, arc_object::print): Ditto.
(object_spec::make_object): Implement `IS_OUTLINED' and `IS_SHADED'.
* src/preproc/pic/pic.y: Add tokens `COLORED', `OUTLINED', and
`SHADED', making them `%left'.
Add rules `object_spec [SHADED|COLORED|OUTLINED] text'.
* src/preproc/pic/tex.cc (tex_output): New dummy function members
`set_color', `reset_color', `get_last_filled', and
`get_outline_color'.
* src/preproc/pic/troff.cc (simple_output): New abstract function
members `set_color', `reset_color', and `get_last_filled'.
(simple_output::polygon, simple_output::circle,
simple_output::ellipse): Use `get_last_filled'.
(troff_output): New members `last_filled' and `last_outlined'.
New function members `set_color', `reset_color', `get_last_filled',
and `get_outline_color'.
(troff_output::finish_picture): Use `reset_color'.
(troff_output::set_fill): Test `last_filled'.
* src/preproc/pic/pic.man: Updated.

* src/roff/groff/groff.cc (main): Implement `-c' option.
(synopsis, help): Updated.
src/roff/groff/groff.man: Updated.

* src/roff/troff/troff.h: Include color.h.
(warning_type): Add WARN_COLOR.
* src/roff/troff/env.h (environment): New members
`{cur,prev}_{glyph,fill}_color'.
New member functions `get_{prev_,}{glyph,fill}_color'.
* src/roff/troff/env.cc: Initialize and implement them.
* src/roff/troff/input.cc: New global variable `disable_color_flag'.
Replace `NULL' with `0' everywhere for consistency.
(lookup_color, default_black, do_glyph_color, do_fill_color,
get_color_element, read_rgb, read_cmy, read_cmyk, read_gray,
define_color): New functions.
(token::next): Implement \M and \m escapes.
(do_if_request): Implement `m' operator.
(usage): Updated.
(main): Implement `-c' option.
(init_markup_requests): Add `defcolor' request.
(warning_table): Add `color' warning.
* src/roff/troff/node.h (glyph_color_node, fill_color_node): New
classes.
* src/roff/troff/node.cc (troff_output_file): New members
`current_{page,glyph}color'.  New member functions `put_hex',
`glyph_color', and `fill_color'.
(glyph_color_node::*, fill_color_node::*): Implement it.
* src/roff/troff/number.cc (SCALE_INDICATOR_CHARS): Add `f'.
(parse_term): Add support for `f'.
* src/roff/troff/troff.man: Updated.

* src/devices/grodvi/dvi.cc (draw_dvi_printer::draw): Add dummy
entry for `F'.
* src/devices/grolbp/lbp.cc (lbp_printer::draw): Ditto.
* src/devices/grolj4/lj4.cc (lj4_printer::draw): Ditto.

* src/devices/grohtml/html-text.h (HTML_TAG): Add COLOR_TAG.
(tag_definition): Use `void *' for arg1.
(html_text): New member functions `do_color' and `done_color'.
Use `void *' for second parameter of `push_para' member function.
New `push_para' member function with a single parameter.
Use `char *' for parameter of `issue_table_begin' member funtion.
New `issue_color_begin' member function.
* src/devices/grohtml/html-text.cc (html_text::end_tag): Handle
COLOR_TAG.
(html_text::issue_color_begin): New function.
(html_text::issue_table_begin): Use `char *' for parameter.
(html_text::start_tag, html_text::shutdown,
html_text::check_emit_text): Updated.
(html_text::push_para): Use `void *' for second parameter.
Add same function with only one parameter.
(html_text::do_*): Updated.
(html_text::do_color, html_text::done_color): New functions.
* src/devices/grohtml/post-html.cc (style): New member `col'.
Mew member `style' with 6 parameters.
(style::style, style::operator==): Updated.
(html_printer::do_font): Use it.
(html_printer::draw): Add dummy entry for `F'.
(html_printer::set_char): Updated.
* src/devices/grohtml/grohtml.man: Updated.

* src/devices/grops/ps.cc (ps_output::put_float): Use `%g' to have
trailing zeroes removed.
(ps_printer): New members `sbuf_color', `fill_color', and
`output_color'.
Removed member `fill'.
New member function `set_color'.
(ps_printer::ps_printer, ps_printer::set_char): Updated.
(ps_printer::flush_sbuf, ps_printer::set_line_thickness,
ps_printer::fill_path, ps_printer::draw): Use `set_color'.

* tmac/color-html.tmac, tmac/color.tmac: New files.
* tmac/troffrc: Include them.
* tmac/www.tmac (URL, FTP, MAILTO): Use blue color.
* tmac/Makefile.sub: Updated.

* NEWS, doc/groff.texinfo, doc/pic.ms, man/groff_out.man,
man/groff.man: Updated.
* font/devps/prologue.ps: Define FC and CO functions.

Fix incorrect cropping of images and incorrect handling of special
characters.  Fix handling of file names in \O.

* src/include/geometry.h: New file.
* src/libs/libgroff/geometry.cc: New file.
* src/libs/libdriver/printer.cc (printer::adjust_arc_center): Moved
to `geometry.cc'.
* src/roff/troff/input.cc (get_delim_file_name): Fixed problem with
initial spaces.
(do_suppress): Updated.
* src/roff/troff/node.cc: Include geometry.h.
(troff_output_file::flush_tbuf): Fixed parameters to
`check_output_limits'.
(troff_output_file::check_charinfo): Ditto.
(troff_output_file::determine_line_limits): Add support for `Da'
and `Dl' commands.

* src/devices/grohtml/post-html.cc (str_translate_to_html):
Add new parameter `is_special' to decode special characters from
escape sequences.
(html_printer::do_title, html_printer::do_heading,
html_printer::do_indentedparagraph,
html_printer::translate_to_html, html_printer::special): Updated.

* Makefile.sub (DISTCLEANFILES): Add stamp-h.
Fix entry for config.h.
* test-groff (GROFF_BIN_PATH): Add $builddir/roff/groff.
* tmac/troffrc: Translate nonbreakable space character to `\~'.
* src/preproc/eqn/eqn.man: Document -d command line option.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/roff/groff/groff.man b/src/roff/groff/groff.man
index ffb683e8..575e7a9a 100644
--- a/src/roff/groff/groff.man
+++ b/src/roff/groff/groff.man
@@ -41,7 +41,7 @@ groff \- front end for the groff document formatting system
 .ie \\n(.$-1 .RI "[\ \fB\\$1\fP" "\\$2" "\ ]"
 .el .RB "[\ " "\\$1" "\ ]"
 ..
-.OP \-abeghilpstvzCEGNRSUVXZ
+.OP \-abceghilpstvzCEGNRSUVXZ
 .OP \-w name
 .OP \-W name
 .OP \-m name
@@ -293,6 +293,8 @@ Unsafe mode.  Reverts to the old unsafe behaviour.
 .TQ
 .B \-b
 .TQ
+.B \-c
+.TQ
 .B \-i
 .TQ
 .B \-C