Samuel Thibault, le Tue 27 Nov 2007 22:41:46 +0000, a écrit :
> Samuel Thibault, le Tue 27 Nov 2007 22:39:53 +0000, a écrit :
> > Linux has some interface to force an immediate blank
> > (TIOCL_BLANK/UNBLANKSCREEN) or get the blank status
> > (TIOCL_BLANKEDSCREEN), which is useful e.g. for blind people.
> >
> > Setterm should probably provide options for these, which could they be?
>
> (that could be for instance -blank [0-60|force|poke|], but the parsing
> code is shared with -powerdown...)
(the code could be something like attached)
Samuel
diff --git a/misc-utils/setterm.c b/misc-utils/setterm.c
index eda99a3..2c8dc69 100644
--- a/misc-utils/setterm.c
+++ b/misc-utils/setterm.c
@@ -50,7 +50,7 @@
* [ -tabs [tab1 tab2 tab3 ... ] ] (tabn = 1-160)
* [ -clrtabs [ tab1 tab2 tab3 ... ] (tabn = 1-160)
* [ -regtabs [1-160] ]
- * [ -blank [0-60] ]
+ * [ -blank [0-60|force|poke|] ]
* [ -dump [1-NR_CONS ] ]
* [ -append [1-NR_CONS ] ]
* [ -file dumpfilename ]
@@ -151,6 +151,11 @@ extern int klogctl(int type, char *buf, int len);
#define GREY 8
#define DEFAULT 9
+/* Blank commands */
+#define BLANKSCREEN -1
+#define UNBLANKSCREEN -2
+#define BLANKEDSCREEN -3
+
/* Control sequences. */
#define ESC "\033"
#define DCS "\033P"
@@ -391,11 +396,17 @@ parse_blank(int argc, char **argv, int *option, int
*opt_all, int *bad_arg) {
*bad_arg = TRUE;
*option = TRUE;
if (argc == 1) {
- *opt_all = atoi(argv[0]);
- if ((*opt_all > 60) || (*opt_all < 0))
- *bad_arg = TRUE;
+ if (!strcmp(argv[0], "force"))
+ *opt_all = BLANKSCREEN;
+ else if (!strcmp(argv[0], "poke"))
+ *opt_all = UNBLANKSCREEN;
+ else {
+ *opt_all = atoi(argv[0]);
+ if ((*opt_all > 60) || (*opt_all < 0))
+ *bad_arg = TRUE;
+ }
} else {
- *opt_all = 0;
+ *opt_all = BLANKEDSCREEN;
}
}
@@ -1034,8 +1045,27 @@ perform_sequence(int vcterm) {
}
/* -blank [0-60]. */
- if (opt_blank && vcterm)
- printf("\033[9;%d]", opt_bl_min);
+ if (opt_blank && vcterm) {
+ if (opt_bl_min >= 0)
+ printf("\033[9;%d]", opt_bl_min);
+ else if (opt_bl_min == BLANKSCREEN) {
+ char ioctlarg = 14; /* blankscreen */
+ if (ioctl(0,TIOCLINUX,&ioctlarg))
+ fprintf(stderr,_("cannot force blank\n"));
+ } else if (opt_bl_min == UNBLANKSCREEN) {
+ char ioctlarg = 4; /* unblankscreen */
+ if (ioctl(0,TIOCLINUX,&ioctlarg))
+ fprintf(stderr,_("cannot force blank\n"));
+ } else if (opt_bl_min == BLANKEDSCREEN) {
+ char ioctlarg = 15; /* blankedscreen */
+ int ret;
+ ret = ioctl(0,TIOCLINUX,&ioctlarg);
+ if (ret < 0)
+ fprintf(stderr,_("cannot get blank status\n"));
+ else
+ printf("%d\n",ret);
+ }
+ }
/* -powersave [on|vsync|hsync|powerdown|off] (console) */
if (opt_powersave) {
-
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