irssi · ahf · Jul 2, 2014 · May 3, 2011 · Jan 9, 2014
diff --git a/AUTHORS b/AUTHORS
@@ -78,3 +78,5 @@ Other patches (grep for "patch" in ChangeLog) by:
   Ismael Luceno
   Thomas Karpiniec
   Svante Kvarnström
+  Ailin Nemui (Nei)
+  Tom Feist (shabble)
diff --git a/configure.ac b/configure.ac
@@ -166,6 +166,15 @@ AC_ARG_ENABLE(dane,
 	fi,
 	want_dane=no)
 
+AC_ARG_ENABLE(true-color,
+[  --enable-true-color     Build with true color support in terminal],
+	if test x$enableval = xno ; then
+		want_truecolor=no
+	else
+		want_truecolor=yes
+	fi,
+	want_truecolor=no)
+
 dnl **
 dnl ** SSL Library checks (OpenSSL)
 dnl **
@@ -643,6 +652,12 @@ if test "x$want_dane" = "xyes"; then
 	fi
 fi
 
+if test "x$want_truecolor" = "xyes" -a "x$want_termcap" != "xyes" -a "x$want_terminfo" = "xyes" ; then
+	AC_DEFINE([TERM_TRUECOLOR], [], [true color support in terminal])
+else
+	want_truecolor=no
+fi
+
 AC_CONFIG_FILES([
 Makefile
 src/Makefile
@@ -761,6 +776,7 @@ echo "Building with SSL support ........ : $have_openssl"
 echo "Building with 64bit DCC support .. : $offt_64bit"
 echo "Building with garbage collector .. : $have_gc"
 echo "Building with DANE support ....... : $have_dane"
+echo "Building with true color support.. : $want_truecolor"
 
 echo
 echo "If there are any problems, read the INSTALL file."
diff --git a/docs/formats.txt b/docs/formats.txt
@@ -27,6 +27,8 @@
    %|                      Marks the indentation position
    %#                      Monospace font on/off (useful with lists and GUI)
    %%                      A single %
+   %XAB            %xAB    Color from extended plane (A=1-7, B=0-Z)
+   %ZAABBCC    %zAABBCC    HTML color (in hex notation)
 
  In .theme files %n works a bit differently. See default.theme
  for more information.

diff --git a/irssi.conf b/irssi.conf
@@ -130,6 +130,7 @@ aliases = {
   CHAT = "dcc chat";
   RUN = "SCRIPT LOAD";
   CALC = "exec - if command -v bc >/dev/null 2>&1\\; then printf '%s=' '$*'\\; echo '$*' | bc -l\\; else echo bc was not found\\; fi";
+  CUBES = "/script exec Irssi::active_win->print(\"%_bases\", MSGLEVEL_CLIENTCRAP) \\;  Irssi::active_win->print( do { join '', map { \"%x0\\${_}0\\$_\" } '0'..'9','A'..'F' }, MSGLEVEL_NEVER | MSGLEVEL_CLIENTCRAP) \\; Irssi::active_win->print(\"%_cubes\", MSGLEVEL_CLIENTCRAP) \\; Irssi::active_win->print( do { my \\$y = \\$_*6 \\; join '', map { my \\$x = \\$_ \\; map { \"%x\\$x\\$_\\$x\\$_\" } @{['0'..'9','A'..'Z']}[\\$y .. \\$y+5] } 1..6 }, MSGLEVEL_NEVER | MSGLEVEL_CLIENTCRAP) for 0..5 \\; Irssi::active_win->print(\"%_grays\", MSGLEVEL_CLIENTCRAP) \\;  Irssi::active_win->print( do { join '', map { \"%x7\\${_}7\\$_\" } 'A'..'X' }, MSGLEVEL_NEVER | MSGLEVEL_CLIENTCRAP) \\;  Irssi::active_win->print(\"%_mIRC extended colours\", MSGLEVEL_CLIENTCRAP) \\; my \\$x \\; \\$x .= sprintf \"\00399,%02d%02d\",\\$_,\\$_ for 0..15 \\; Irssi::active_win->print(\\$x, MSGLEVEL_NEVER | MSGLEVEL_CLIENTCRAP) \\; for my \\$z (0..6) { my \\$x \\; \\$x .= sprintf \"\00399,%02d%02d\",\\$_,\\$_ for 16+(\\$z*12)..16+(\\$z*12)+11 \\; Irssi::active_win->print(\\$x, MSGLEVEL_NEVER | MSGLEVEL_CLIENTCRAP) }";
   SBAR = "STATUSBAR";
   INVITELIST = "mode $C +I";
   Q = "QUERY";

diff --git a/src/fe-common/core/fe-windows.c b/src/fe-common/core/fe-windows.c
@@ -588,6 +588,63 @@ static void window_print_daychange(WINDOW_REC *window, struct tm *tm)
 	printtext_string_window(window, MSGLEVEL_NEVER, str);
 }
 
+short color_24bit_256 (const unsigned char rgb[])
+{
+	static const int cstep_size = 40;
+	static const int cstep_start = 0x5f;
+
+	static const int gstep_size = 10;
+	static const int gstep_start = 0x08;
+
+	int dist[3] = {0};
+	int r[3], gr[3];
+
+	size_t i;
+
+	for (i = 0; i < 3; ++i) {
+		const int n = rgb[i];
+		gr[i] = -1;
+		if (n < cstep_start /2) {
+			r[i] = 0;
+			dist[i] = -cstep_size/2;
+		}
+		else {
+			r[i] = 1+((n-cstep_start + cstep_size /2)/cstep_size);
+			dist[i] = ((n-cstep_start + cstep_size /2)%cstep_size - cstep_size/2);
+		}
+		if (n < gstep_start /2) {
+			gr[i] = -1;
+		}
+		else {
+			gr[i] = ((n-gstep_start + gstep_size /2)/gstep_size);
+		}
+	}
+	if (r[0] == r[1] && r[1] == r[2] &&
+	    4*abs(dist[0]) < gstep_size && 4*abs(dist[1]) < gstep_size && 4*abs(dist[2]) < gstep_size) {
+		/* skip gray detection */
+	}
+	else {
+		const int j = r[1] == r[2] ? 0 : 1;
+		if ((r[0] == r[1] || r[j] == r[2]) && abs(r[j]-r[(j+1)%3]) <= 1) {
+			const int k = gr[1] == gr[2] ? 0 : 1;
+			if ((gr[0] == gr[1] || gr[k] == gr[2]) && abs(gr[k]-gr[(k+1)%3]) <= 2) {
+				if (gr[k] < 0) {
+					r[0] = r[1] = r[2] = 0;
+				}
+				else if (gr[k] > 23) {
+					r[0] = r[1] = r[2] = 5;
+				}
+				else {
+					r[0] = 6;
+					r[1] = (gr[k] / 6);
+					r[2] = gr[k]%6;
+				}
+			}
+		}
+	}
+	return 16 + r[0]*36 + r[1] * 6 + r[2];
+}
+
 static void sig_print_text(void)
 {
 	GSList *tmp;

diff --git a/src/fe-common/core/fe-windows.h b/src/fe-common/core/fe-windows.h
@@ -97,4 +97,6 @@ void window_bind_remove_unsticky(WINDOW_REC *window);
 void windows_init(void);
 void windows_deinit(void);
 
+short color_24bit_256(const unsigned char rgb[]);
+
 #endif