[Groff-commit] Changes to //var/cvs/groff

[wlemb]

Log from commit: 

Update of /var/cvs/groff/src/roff/troff
In directory genba:/tmp/cvs-serv2032/src/roff/troff

Modified Files:
        env.cc input.cc node.cc node.h 
Log Message:

Redesigning color support in troff.  Colors are no longer
represented as separate nodes but are now part of glyph nodes and
friends.  This fixes the current formatting misbehaviour due to the
changes introduced on 2002-09-20.  Some extra code is necessary for
proper grotty support: Without adding color variables to
space-related nodes, the background color would be changed too late.

* src/roff/troff/node.h, src/roff/troff/node.cc:
s/current_pagecolor/current_fill_color/.
s/current_glyphcolor/current_glyph_color/.
(glyph_color_node, fill_color_node): Removed.
(node::get_glyph_color, node::get_fill_color): New virtual member
functions.
(space_node::col): New variable.
Updated constructors of space_node and derived classes accordingly.
(hmotion_node::col): New variable.
Updated constructors of hmotion_node and space_char_hmotion_node
accordingly.
(vmotion_node::col): New variable.
Updated constructor accordingly.
(draw_node::gcol, draw_node::fcol): New variables.
Updated constructor accordingly.
(special_node::gcol, special_node::fcol): New variables.
Updated constructors accordingly.
(troff_output_file::put_char, troff_output_file::put_charwidth,
troff_output_file::draw): Set glyph and fill color.
(troff_output_file::start_special): Set glyph and fill color.
Always set current font.
(troff_output_file::fill_color, troff_output_file::glyph_color):
Don't call `do_motion'.
(glyph_node::gcol, glyph_node::fcol): New variables.
Updated constructors of glyph_node and ligature_node accordingly.
(glyph_node::get_glyph_color, glyph_node::get_fill_color): New
member functions.
(glyph_node::merge_glyph_node,
kern_pair_node::add_discretionary_hyphen,
node::add_discretionary_hyphen): Updated.
(break_char_node::merge_self): Updated.
(word_space_node::tprint, space_node::tprint, hmotion_node::tprint,
vmotion_node::tprint): Handle color.
(make_glyph_node, make_node, node::add_char): Updated.

* src/roff/troff/env.cc (environment::space_newline,
environment::space, environment::output_line, environment::do_break,
environment::make_tab_node, environment::add_padding, title):
Updated.
(environment_switch, environment_copy): Don't add color nodes.

* src/roff/troff/input.cc (do_glyph_color, do_fill_color): Return
nothing.
(token::next): Updated.
\m and \M now are as transparent as \s.
(process_input_stack, token::add_to_node_list, token::process,
read_draw_node): Updated.
(charinfo_to_node_list): Don't add color nodes.

* doc/groff.texinfo: Updated.