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README cleanup, a little reordering in magic.c for readability

This commit is contained in:
Neale Pickett 2008-04-24 11:31:37 -06:00
parent 45ebdf19b7
commit b69bb4c0b4
2 changed files with 14 additions and 21 deletions
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23
README
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@ -1,8 +1,8 @@
== xss == == xss ==
[xss](http://woozle.org/~neale/src/xss) is a suite of X screensaver [xss](http://woozle.org/~neale/src/xss) is a suite of X screensaver
utilities. With them, you can use shell scripts to glue the tools utilities. You can use shell scripts to glue the tools together to
together to build your own screen saver and/or locker. You can use any build your own screen saver and/or locker. You can use any
`xscreensaver` hack instead of the built-in `magic` hack, or you can use `xscreensaver` hack instead of the built-in `magic` hack, or you can use
`xlock` if you prefer. `xlock` if you prefer.
@ -27,7 +27,7 @@ stdout.
`xbell` sounds the X server's bell. `xbell` sounds the X server's bell.
`magic` is a reimplementation of the "magic" screen saver from After `magic` is a reimplementation of the "magic" screen saver from After
Dark. It probably doesn't work with an 8-bit color pallette. Dark. It might look weird at 8bpp.
Examples Examples
@ -35,20 +35,19 @@ Examples
Tell the X server to launch the screen saver after 90 seconds idle: Tell the X server to launch the screen saver after 90 seconds idle:
xset s 90 $ xset s 90
Run like `xautolock`: Run like `xautolock`:
xss xlock -mode qix & $ xss xlock -mode qix &
Just run a screen saver, don't lock Just run a screen saver, don't lock
xss -w /usr/lib/xscreensaver/deco -window-id XSS_WINDOW $ xss -w /usr/lib/xscreensaver/deco -window-id XSS_WINDOW &
Launch a program called "screenlock" when you're idle: Launch a program called "screenlock" when you're idle:
xss screenlock $ xss screenlock &
An simple "screenlock" script: An simple "screenlock" script:
@ -94,14 +93,6 @@ git repository:
git clone http://woozle.org/~neale/repos/xss/ git clone http://woozle.org/~neale/repos/xss/
Bugs
----
* Sometimes `xss` quits launching anything. I suspect it's not getting
SIGCHLD for some reason.
* `magic` is probably abusing the X protocol, and may buy the farm after
a few hours.
History History
------- -------

12
magic.c
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@ -167,17 +167,17 @@ main(int argc, char * const argv[])
XGCValues values; XGCValues values;
XColor color; XColor color;
gc = XCreateGC(display, w, 0, &values);
if (! XSetBackground(display, gc, BlackPixel(display, screen))) break;
sum(red, red, dred, 65536); sum(red, red, dred, 65536);
sum(green, green, dgreen, 65536); sum(green, green, dgreen, 65536);
sum(blue, blue, dblue, 65536); sum(blue, blue, dblue, 65536);
color.red = red; color.red = red;
color.green = green; color.green = green;
color.blue = blue; color.blue = blue;
if (! XAllocColor(display, DefaultColormap(display, screen), &color)) break; if (! XAllocColor(display, DefaultColormap(display, screen), &color)) break;
if (! XSetForeground(display, gc, color.pixel)) break;
values.background = BlackPixel(display, screen);
values.foreground = color.pixel;
gc = XCreateGC(display, w, GCBackground | GCForeground, &values);
(void)memcpy(segments + 0, lines + j, sizeof(XSegment)); (void)memcpy(segments + 0, lines + j, sizeof(XSegment));
(void)memcpy(segments + 1, lines + j, sizeof(XSegment)); (void)memcpy(segments + 1, lines + j, sizeof(XSegment));
@ -196,8 +196,10 @@ main(int argc, char * const argv[])
segments[1].x2 = width - segments[0].x2; segments[1].x2 = width - segments[0].x2;
XDrawSegments(display, (Drawable)w, gc, segments, 2); XDrawSegments(display, (Drawable)w, gc, segments, 2);
if (! XFreeColors(display, DefaultColormap(display, screen), &(color.pixel), 1, 0)) break; /* Freeing the color while the line is still visible may look
wonky at 8bpp */
(void)XFreeGC(display, gc); (void)XFreeGC(display, gc);
if (! XFreeColors(display, DefaultColormap(display, screen), &(color.pixel), 1, 0)) break;
XSync(display, True); XSync(display, True);
(void)nanosleep(&req, NULL); (void)nanosleep(&req, NULL);