Add color support to grodvi (for drawing colors are currently

translated to gray values).

* src/devices/grodvi/dvi.cc (FILL_MAX): Removed.
(dvi_printer): Add `cur_color' member.
(dvi_printer::set_color): New function.
(draw_dvi_printer): Remove `fill'.
(draw_dvi_printer::fill_next): Pass environment as parameter.
Update code for new color support translated to gray.
(dvi_printer::set_char): Updated.
(dvi_printer::begin_page, dvi_printer::end_page): Handle color
changes crossing the page border.
(dvi_printer::draw): Updated.
Remove cases `f' and `F'.
* tmac/dvi.tmac: Add color definitions.
* NEWS, src/devices/grodvi/grodvi.man: Updated.

* tmac/an-old.tmac (R): Make this a macro to emit a warning if
used incorrectly.

* aclocal.m4 (GROFF_NEED_DECLARATION): Use test similar to recent
versions of autoconf.
* configure: Updated.

* doc/homepage.ms: Use `.blm'.
* tmac/www.tmac (www-depth): New auxiliary variable.
(www-pop-level): Don't issue HTML tag.
(ULS, ULE, LI): Use absolute indentation.

* src/devices/grops/ps.cc (ps_printer::begin_page,
ps_printer::end_page): Switch forth and back to default color while
starting a new page.

1 files changed, 14 insertions, 2 deletions

diff --git a/tmac/an-old.tmac b/tmac/an-old.tmac
index a3d77013..72bf8c7f 100644
--- a/tmac/an-old.tmac
+++ b/tmac/an-old.tmac
@@ -514,11 +514,23 @@
 .  HTML-IMAGE-END
 ..
 .
+.de1 R
+\c
+.  ie \\n[.$] \{\
+.    tm `R' is a string (producing the registered sign), not a macro.
+.    nop \\$*
+.  \}
+.  el \{\
+.    ie c\[rg] \
+.      nop \[rg]\c
+.    el \
+.      nop (Reg.)\c
+.  \}
+..
+.
 .\" these strings must work in compatibility mode also
 .
 .ds S \s'\\n(PSu'
-.ie c\[rg] .ds R \(rg
-.el        .ds R (Reg.)
 .ie c\[tm] .ds Tm \(tm
 .el        .ds Tm (TM)
 .ds lq \(lq