slock

simple X display locker utility
git clone git://git.suckless.org/slock
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commit f2ea92c3ddf1d9476ef61f85ec3aa26818d094a1
parent a31b9191111572dafaa8366415b89a4472aa4626
Author: David Phillips <dbphillipsnz@gmail.com>
Date:   Thu, 12 Feb 2015 11:56:35 +1300

Blank the screen with color 0, add third color for failed logins

- Adds another color in config.def.h, COLOR_INIT
- Renames the colours from numerical ones to ones with meaningful names;
  COLOR_INPUT for when there is content in the input buffer and COLOR_EMPTY
  for when the input buffer has been cleared (backspaced or a failed attempt).
- Ensures XFreeColors frees the right number of colours. This is now derived
  from the size of `Lock->colors` rather than being an integer literal.
- Makes slock exhibit the behaviour described by Markus

The default colours are the same as the ones slock currently uses, with the
exception of the new color, which I have set to red, as it indicates someone
has either failed an attempt to unlock, or that they have entered input and
erased it all.

Diffstat:
config.def.h | 7+++++--
slock.c | 27++++++++++++++++++---------
2 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/config.def.h b/config.def.h @@ -1,2 +1,5 @@ -#define COLOR1 "black" -#define COLOR2 "#005577" +static const char *colorname[NUMCOLS] = { + "black", /* after initialization */ + "#005577", /* during input */ + "#CC3333", /* failed/cleared the input */ +}; diff --git a/slock.c b/slock.c @@ -22,13 +22,20 @@ #include <bsd_auth.h> #endif +enum { + INIT, + INPUT, + EMPTY, + NUMCOLS +}; + #include "config.h" typedef struct { int screen; Window root, win; Pixmap pmap; - unsigned long colors[2]; + unsigned long colors[NUMCOLS]; } Lock; static Lock **locks; @@ -162,12 +169,12 @@ readpw(Display *dpy, const char *pws) } if (llen == 0 && len != 0) { for (screen = 0; screen < nscreens; screen++) { - XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[1]); + XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[INPUT]); XClearWindow(dpy, locks[screen]->win); } } else if (llen != 0 && len == 0) { for (screen = 0; screen < nscreens; screen++) { - XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]); + XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[EMPTY]); XClearWindow(dpy, locks[screen]->win); } } @@ -185,7 +192,7 @@ unlockscreen(Display *dpy, Lock *lock) return; XUngrabPointer(dpy, CurrentTime); - XFreeColors(dpy, DefaultColormap(dpy, lock->screen), lock->colors, 2, 0); + XFreeColors(dpy, DefaultColormap(dpy, lock->screen), lock->colors, NUMCOLS, 0); XFreePixmap(dpy, lock->pmap); XDestroyWindow(dpy, lock->win); @@ -197,6 +204,7 @@ lockscreen(Display *dpy, int screen) { char curs[] = {0, 0, 0, 0, 0, 0, 0, 0}; unsigned int len; + int i; Lock *lock; XColor color, dummy; XSetWindowAttributes wa; @@ -213,16 +221,17 @@ lockscreen(Display *dpy, int screen) lock->root = RootWindow(dpy, lock->screen); + for (i = 0; i < NUMCOLS; i++) { + XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen), colorname[i], &color, &dummy); + lock->colors[i] = color.pixel; + } + /* init */ wa.override_redirect = 1; - wa.background_pixel = BlackPixel(dpy, lock->screen); + wa.background_pixel = lock->colors[INIT]; lock->win = XCreateWindow(dpy, lock->root, 0, 0, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), 0, DefaultDepth(dpy, lock->screen), CopyFromParent, DefaultVisual(dpy, lock->screen), CWOverrideRedirect | CWBackPixel, &wa); - XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen), COLOR2, &color, &dummy); - lock->colors[1] = color.pixel; - XAllocNamedColor(dpy, DefaultColormap(dpy, lock->screen), COLOR1, &color, &dummy); - lock->colors[0] = color.pixel; lock->pmap = XCreateBitmapFromData(dpy, lock->win, curs, 8, 8); invisible = XCreatePixmapCursor(dpy, lock->pmap, lock->pmap, &color, &color, 0, 0); XDefineCursor(dpy, lock->win, invisible);