[wiki] [sites] Slock patch - Leave a message on lock screen. || Blair Drummond

From: <git_AT_suckless.org>
Date: Tue, 26 Jun 2018 21:52:22 +0200

commit 81f073846ec2c97061b6cc8c1324535c3bda6d94
Author: Blair Drummond <blair.robert.drummond_AT_gmail.com>
Date: Tue Jun 26 15:37:06 2018 -0400

    Slock patch - Leave a message on lock screen.

diff --git a/tools.suckless.org/slock/patches/message.md b/tools.suckless.org/slock/patches/message.md
new file mode 100644
index 00000000..4a4f3658
--- /dev/null
+++ b/tools.suckless.org/slock/patches/message.md
_AT_@ -0,0 +1,38 @@
+Message
+=======
+
+Description
+-----------
+
+This patch lets you add a message to your lock screen. You can place a default message in `config.h`, and you can also pass a message with `-m message`
+
+So, for instance, you can run
+
+`slock -m "Locked at $(date "+%a %d, %H:%M:%S")"`
+
+Or if you want a silly lockscreen
+
+`slock -m "$(cowsay "$(fortune)")"`
+
+Notes
+-----
+
+This adds three items to `config.h`:
+
+ * `message` - the default message
+ * `text_color` - which can be a hex color or a colorname (like "black")
+ * `text-size` - which must be some valid X11 dimension like "6x10"
+
+
+*A list of font sizes might be in* `/usr/share/fonts/X11/misc/`
+
+
+Download
+--------
+
+ * [slock-message-20180626-8384a86.diff](slock-message-20180626-8384a86.diff)
+
+Authors
+-------
+
+ * Blair Drummond - blair.robert.drummond_AT_gmail.com
diff --git a/tools.suckless.org/slock/patches/slock-message-20180626-8384a86.diff b/tools.suckless.org/slock/patches/slock-message-20180626-8384a86.diff
new file mode 100644
index 00000000..21f006aa
--- /dev/null
+++ b/tools.suckless.org/slock/patches/slock-message-20180626-8384a86.diff
_AT_@ -0,0 +1,171 @@
+From 8384a863057f024868bd8455a82013f716197ab0 Mon Sep 17 00:00:00 2001
+From: Blair Drummond <blair.robert.drummond_AT_gmail.com>
+Date: Tue, 26 Jun 2018 15:09:13 -0400
+Subject: [PATCH] Adds [-m message] option to leave a message on the lockscreen
+
+---
+ config.def.h | 9 ++++++
+ slock.1 | 4 +++
+ slock.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++--
+ 3 files changed, 87 insertions(+), 3 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 9855e21..7eb7a0d 100644
+--- a/config.def.h
++++ b/config.def.h
+_AT_@ -10,3 +10,12 @@ static const char *colorname[NUMCOLS] = {
+
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* default message */
++static const char * message = "Suckless: Software that sucks less.";
++
++/* text color */
++static const char * text_color = "#ffffff";
++
++/* text size (must be a valid size) */
++static const char * text_size = "6x10";
+diff --git a/slock.1 b/slock.1
+index 82cdcd6..541a264 100644
+--- a/slock.1
++++ b/slock.1
+_AT_@ -6,6 +6,7 @@
+ .Sh SYNOPSIS
+ .Nm
+ .Op Fl v
++.Op Fl m Ar message
+ .Op Ar cmd Op Ar arg ...
+ .Sh DESCRIPTION
+ .Nm
+_AT_@ -16,6 +17,9 @@ is executed after the screen has been locked.
+ .Bl -tag -width Ds
+ .It Fl v
+ Print version information to stdout and exit.
++.It Fl m Ar message
++Overrides default slock lock message.
++.TP
+ .El
+ .Sh SECURITY CONSIDERATIONS
+ To make sure a locked screen can not be bypassed by switching VTs
+diff --git a/slock.c b/slock.c
+index 5ae738c..6a9a03f 100644
+--- a/slock.c
++++ b/slock.c
+_AT_@ -61,6 +61,71 @@ die(const char *errstr, ...)
+ #include <fcntl.h>
+ #include <linux/oom.h>
+
++static void
++writemessage(Display *dpy, Window win, int screen)
++{
++ int len, line_len, width, height, i, j, k, tab_replace, tab_size;
++ XGCValues gr_values;
++ XFontStruct *fontinfo;
++ XColor color, dummy;
++ GC gc;
++ fontinfo = XLoadQueryFont(dpy, text_size);
++ tab_size = 8 * XTextWidth(fontinfo, " ", 1);
++
++ XAllocNamedColor(dpy, DefaultColormap(dpy, screen),
++ text_color, &color, &dummy);
++
++ gr_values.font = fontinfo->fid;
++ gr_values.foreground = color.pixel;
++ gc=XCreateGC(dpy,win,GCFont+GCForeground, &gr_values);
++
++
++ /*
++ * Start formatting and drawing text
++ */
++
++ len = strlen(message);
++
++ /* Max max line length (cut at '
') */
++ line_len = 0;
++ k = 0;
++ for (i = j = 0; i < len; i++) {
++ if (message[i] == '
') {
++ if (i - j > line_len)
++ line_len = i - j;
++ k++;
++ i++;
++ j = i;
++ }
++ }
++ /* If there is only one line */
++ if (line_len == 0)
++ line_len = len;
++
++ height = DisplayHeight(dpy, screen)*3/7 - (k*20)/3;
++ width = (DisplayWidth(dpy, screen) - XTextWidth(fontinfo, message, line_len))/2;
++
++ /* Look for '
' and print the text between them. */
++ for (i = j = k = 0; i <= len; i++) {
++ /* i == len is the special case for the last line */
++ if (i == len || message[i] == '
') {
++ tab_replace = 0;
++ while (message[j] == ' ' && j < i) {
++ tab_replace++;
++ j++;
++ }
++
++ XDrawString(dpy, win, gc, width + tab_size*tab_replace, height + 20*k, message + j, i - j);
++ while (i < len && message[i] == '
') {
++ i++;
++ j = i;
++ k++;
++ }
++ }
++ }
++}
++
++
+ static void
+ dontkillme(void)
+ {
+_AT_@ -194,6 +259,7 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ locks[screen]->win,
+ locks[screen]->colors[color]);
+ XClearWindow(dpy, locks[screen]->win);
++ writemessage(dpy, locks[screen]->win, screen);
+ }
+ oldc = color;
+ }
+_AT_@ -300,7 +366,7 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ static void
+ usage(void)
+ {
+- die("usage: slock [-v] [cmd [arg ...]]
");
++ die("usage: slock [-v] [-m message] [cmd [arg ...]]
");
+ }
+
+ int
+_AT_@ -319,6 +385,9 @@ main(int argc, char **argv) {
+ case 'v':
+ fprintf(stderr, "slock-"VERSION"
");
+ return 0;
++ case 'm':
++ message = EARGF(usage());
++ break;
+ default:
+ usage();
+ } ARGEND
+_AT_@ -363,10 +432,12 @@ main(int argc, char **argv) {
+ if (!(locks = calloc(nscreens, sizeof(struct lock *))))
+ die("slock: out of memory
");
+ for (nlocks = 0, s = 0; s < nscreens; s++) {
+- if ((locks[s] = lockscreen(dpy, &rr, s)) != NULL)
++ if ((locks[s] = lockscreen(dpy, &rr, s)) != NULL) {
++ writemessage(dpy, locks[s]->win, s);
+ nlocks++;
+- else
++ } else {
+ break;
++ }
+ }
+ XSync(dpy, 0);
+
+--
+2.17.1
+
Received on Tue Jun 26 2018 - 21:52:22 CEST