Changeset 226 for libcaca/trunk/NOTESTweet

Timestamp:

Nov 27, 2003, 10:56:30 PM (17 years ago)

Author:

Sam Hocevar

Message:

• NOTES: + Added setab/setaf quotes from the XTerm terminfo. + Proposed a workaround for bright colours on any terminal.
• src/caca.c: + 16 colour support for ncurses and conio.
• src/graphics.c: + Ported to 16 colour support. + Added a missing <stdio.h> for BUFSIZ. + Disabled vsnprintf under DOS (only vsprintf exists).
• examples/: + Don't abort if the caca.txt sprite was not found. + Ported to 16 colour support.

File:

• libcaca/trunk/NOTES (modified) (5 diffs)

libcaca/trunk/NOTES

@@ -4 +4 @@
       many terminal emulators and tried to summarise which combinations
       worked properly and which ones did not.
+
+      From termcap(5):
+
+       set_a_background              setab        AB        Set background
+                                                            color to #1, using
+                                                            ANSI escape
+       set_a_foreground              setaf        AF        Set foreground
+                                                            color to #1, using
+                                                            ANSI escape
+      From the xterm terminfo:
+
+        setab=\E[4%p1%dm, setaf=\E[3%p1%dm
+
+      From the xterm-16color terminfo:
+
+        setab=\E[%?%p1%{8}%<%t%p1%{40}%+%e%p1%{92}%+%;%dm,
+        setaf=\E[%?%p1%{8}%<%t%p1%{30}%+%e%p1%{82}%+%;%dm,
+
+      (http://www.sct.gu.edu.au/~anthony/info/X/Xterm_xf86.terminfo)
 
    o  I tested the following terminals:
@@ -21 +40 @@
 
    o  In most terminals, \e[3xm and \[4xm respectively set the foreground
-      and background colours. x is an colour between 0 and 7 or the value
-      9 for default value.
+      and background colours. x is a colour between 0 and 7 or the value
+      9 for default colour (may be transparent).
 
       \e[0m sets everything to normal, \e[1m sets bold, \e[5m sets blink
@@ -36 +55 @@
         for blink in '' '\e[5m'; do
           for bold in '' '\e[1m'; do
-            echo -ne "$bold$blink$invert"'\e[34m\e[43m'hop'\e[0m '
+            echo -ne "$bold$blink$invert"'\e[33m\e[44m'hop'\e[0m '
             echo "($bold$blink$invert)"
           done
@@ -49 +68 @@
 
       Almost works on:
-       + xterm (bright bg works for blue, but not for red or yellow)
+       + xterm (bright bg only works when fg is bright and then inverted,
+         but then fg is not bright)
 
       Fails on:
@@ -75 +95 @@
        + pterm
 
-      Failed (\e[9x and \e[10x don't work) on:
+      Failed (\e[9x and \e[10x don't do anything) on:
        + Eterm
        + aterm, wterm, rxvt
        + mlterm
-       + linux
+       + Linux console
+
+   o  How to draw bright colours on any terminal?
+
+      '\e[93;104m' -> bright yellow on bright blue
+       doesn't work on mlterm, gnome-terminal, konsole
+
+      '\e[5;1;33;44m' -> bright yellow on bright blue
+       doesn't work on mlterm, aterm/wterm/rxvt, Eterm, console
+
+      '\e[5;1;33;44;93;104m' -> bright yellow on bright blue
+       works on gnome-terminal, xterm, pterm, aterm/wterm/rxvt, console
+       doesn't work on konsole
 
    o  S-Lang: