Hello I would like to propose a simple, but imho really useful hack for cwm. It boils down to colorization of remote terminals (Meta-Dot command) based on crc24 of a hostname. This way each remote connection gets its own color, such that different hosts are easier to distinguish. On the same time, different sessions to the same host gets always same color, which improves visual feedback.
wbr -- Dimitri Sokolyuk -- http://www.dim13.org/
diff --git a/Makefile b/Makefile
index 4c34ee4..020724f 100644
--- a/Makefile
+++ b/Makefile
@@ -7,12 +7,12 @@ PREFIX?= /usr/local
SRCS= calmwm.c screen.c xmalloc.c client.c menu.c \
search.c util.c xutil.c conf.c xevents.c group.c \
- kbfunc.c mousefunc.c parse.y
+ kbfunc.c mousefunc.c parse.y colorize.c
OBJS= calmwm.o screen.o xmalloc.o client.o menu.o \
search.o util.o xutil.o conf.o xevents.o group.o \
kbfunc.o mousefunc.o strlcpy.o strlcat.o y.tab.o \
- strtonum.o fgetln.o
+ strtonum.o fgetln.o colorize.o
CPPFLAGS+= `pkg-config --cflags fontconfig x11 xft xinerama xrandr`
diff --git a/calmwm.h b/calmwm.h
index b56a9d7..40f1fb1 100644
--- a/calmwm.h
+++ b/calmwm.h
@@ -302,6 +302,7 @@ struct conf {
struct ignore_q ignoreq;
struct cmd_q cmdq;
#define CONF_STICKY_GROUPS 0x0001
+#define CONF_COLORIZE_SSH 0x0002
int flags;
#define CONF_BWIDTH 1
int bwidth;
@@ -583,4 +584,8 @@ int xasprintf(char **, const char *, ...)
__attribute__((__format__ (printf, 2, 3)))
__attribute__((__nonnull__ (2)));
+long crc24(char *);
+long tint(long);
+long shade(long);
+
#endif /* _CALMWM_H_ */
diff --git a/colorize.c b/colorize.c
new file mode 100644
index 0000000..c60d75b
--- /dev/null
+++ b/colorize.c
@@ -0,0 +1,67 @@
+/* $Id$ */
+/*
+ * Copyright (c) 2015 Dimitri Sokolyuk <de...@dim13.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "calmwm.h"
+
+#define CRC24_INIT 0x0B704CEL
+#define CRC24_POLY 0x1864CFBL
+
+long
+crc24(char *s)
+{
+ long crc;
+ int i;
+
+ for (crc = CRC24_INIT; *s; s++) {
+ crc ^= *s << 0x10;
+ for (i = 0; i < 8; i++) {
+ crc <<= 1;
+ if (crc & 0x1000000)
+ crc ^= CRC24_POLY;
+ }
+ }
+
+ return crc;
+}
+
+long
+shade(long c)
+{
+ unsigned char r = c >> 0x10;
+ unsigned char g = c >> 0x08;
+ unsigned char b = c;
+
+ r >>= 2;
+ g >>= 2;
+ b >>= 2;
+
+ return (r << 0x10) | (g << 0x8) | b;
+}
+
+long
+tint(long c)
+{
+ unsigned char r = c >> 0x10;
+ unsigned char g = c >> 0x08;
+ unsigned char b = c;
+
+ r += (UCHAR_MAX - r) >> 1;
+ g += (UCHAR_MAX - g) >> 1;
+ b += (UCHAR_MAX - b) >> 1;
+
+ return (r << 0x10) | (g << 0x8) | b;
+}
diff --git a/kbfunc.c b/kbfunc.c
index 8ad5b99..3a6c7f8 100644
--- a/kbfunc.c
+++ b/kbfunc.c
@@ -326,6 +326,7 @@ kbfunc_ssh(struct client_ctx *cc, union arg *arg)
char *buf, *lbuf, *p;
char hostbuf[HOST_NAME_MAX+1];
char path[PATH_MAX];
+ long color;
int l;
size_t len;
@@ -371,8 +372,16 @@ kbfunc_ssh(struct client_ctx *cc, union arg *arg)
search_match_exec, NULL)) != NULL) {
if (mi->text[0] == '\0')
goto out;
- l = snprintf(path, sizeof(path), "%s -T '[ssh] %s' -e ssh %s",
- cmd->path, mi->text, mi->text);
+ if (Conf.flags & CONF_COLORIZE_SSH) {
+ color = crc24(mi->text);
+ l = snprintf(path, sizeof(path),
+ "%s -T '[ssh] %s' -fg #%.6x -bg #%.6x -e ssh %s",
+ cmd->path, mi->text, tint(color), shade(color),
+ mi->text);
+ } else
+ l = snprintf(path, sizeof(path),
+ "%s -T '[ssh] %s' -e ssh %s",
+ cmd->path, mi->text, mi->text);
if (l == -1 || l >= sizeof(path))
goto out;
u_spawn(path);
diff --git a/parse.y b/parse.y
index eb8ed64..9922dc5 100644
--- a/parse.y
+++ b/parse.y
@@ -70,7 +70,7 @@ typedef struct {
%}
-%token FONTNAME STICKY GAP MOUSEBIND
+%token FONTNAME STICKY GAP MOUSEBIND COLORIZE
%token AUTOGROUP BIND COMMAND IGNORE
%token YES NO BORDERWIDTH MOVEAMOUNT
%token COLOR SNAPDIST
@@ -119,6 +119,12 @@ main : FONTNAME STRING {
else
conf->flags |= CONF_STICKY_GROUPS;
}
+ | COLORIZE yesno {
+ if ($2 == 0)
+ conf->flags &= ~CONF_COLORIZE_SSH;
+ else
+ conf->flags |= CONF_COLORIZE_SSH;
+ }
| BORDERWIDTH NUMBER {
if ($2 < 0 || $2 > UINT_MAX) {
yyerror("invalid borderwidth: %lld", $2);
@@ -276,6 +282,7 @@ lookup(char *s)
{ "bind", BIND},
{ "borderwidth", BORDERWIDTH},
{ "color", COLOR},
+ { "colorize", COLORIZE},
{ "command", COMMAND},
{ "font", FONTCOLOR},
{ "fontname", FONTNAME},
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