feat: choose background image.

README

@@ -2,6 +2,8 @@ slock - simple screen locker
 ============================
 simple screen locker utility for X. 
 
+Includes patch for using image file as the background.
+
 
 Requirements
 ------------
@@ -13,6 +15,10 @@ Installation
 Edit config.mk to match your local setup (slock is installed into
 the /usr/local namespace by default).
 
+Apply the background image patch:
+
+    patch -N < slock-image.patch
+
 Afterwards enter the following command to build and install slock
 (if necessary as root):
 

config.def.h

@@ -1,6 +1,6 @@
 /* user and group to drop privileges to */
 static const char *user  = "nobody";
-static const char *group = "nogroup";
+static const char *group = "nobody";
 
 static const char *colorname[NUMCOLS] = {
 	[INIT] =   "black",     /* after initialization */

config.h

@@ -0,0 +1,12 @@
+/* user and group to drop privileges to */
+static const char *user  = "nobody";
+static const char *group = "nobody";
+
+static const char *colorname[NUMCOLS] = {
+	[INIT] =   "black",     /* after initialization */
+	[INPUT] =  "#005577",   /* during input */
+	[FAILED] = "#CC3333",   /* wrong password */
+};
+
+/* treat a cleared input like a wrong password (color) */
+static const int failonclear = 1;

config.mk

@@ -12,19 +12,19 @@ X11LIB = /usr/X11R6/lib
 
 # includes and libs
 INCS = -I. -I/usr/include -I${X11INC}
-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
+LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr -lImlib2
 
 # flags
-CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+CPPFLAGS += -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
-CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+CFLAGS += -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
-LDFLAGS = -s ${LIBS}
+LDFLAGS += -s ${LIBS}
 COMPATSRC = explicit_bzero.c
 
 # On OpenBSD and Darwin remove -lcrypt from LIBS
 #LIBS = -L/usr/lib -lc -L${X11LIB} -lX11 -lXext -lXrandr
 # On *BSD remove -DHAVE_SHADOW_H from CPPFLAGS
 # On NetBSD add -D_NETBSD_SOURCE to CPPFLAGS
-#CPPFLAGS = -DVERSION=\"${VERSION}\" -D_BSD_SOURCE -D_NETBSD_SOURCE
+#CPPFLAGS += -DVERSION=\"${VERSION}\" -D_BSD_SOURCE -D_NETBSD_SOURCE
 # On OpenBSD set COMPATSRC to empty
 #COMPATSRC =
 

slock.1

@@ -5,7 +5,7 @@
 .Nd simple X screen locker
 .Sh SYNOPSIS
 .Nm
-.Op Fl v
+.Op Fl v i
 .Op Ar cmd Op Ar arg ...
 .Sh DESCRIPTION
 .Nm
@@ -16,6 +16,8 @@ is executed after the screen has been locked.
 .Bl -tag -width Ds
 .It Fl v
 Print version information to stdout and exit.
+.It Fl i
+Load image as background.
 .El
 .Sh SECURITY CONSIDERATIONS
 To make sure a locked screen can not be bypassed by switching VTs

slock.c

@@ -18,8 +18,9 @@
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
+#include <Imlib2.h>
+#include <getopt.h>
 
-#include "arg.h"
 #include "util.h"
 
 char *argv0;
@@ -35,6 +36,7 @@ struct lock {
 	int screen;
 	Window root, win;
 	Pixmap pmap;
+	Pixmap bgmap;
 	unsigned long colors[NUMCOLS];
 };
 
@@ -177,7 +179,7 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 				break;
 			case XK_BackSpace:
 				if (len)
-					passwd[--len] = '\0';
+					passwd[len--] = '\0';
 				break;
 			default:
 				if (num && !iscntrl((int)buf[0]) &&
@@ -190,10 +192,10 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			color = len ? INPUT : ((failure || failonclear) ? FAILED : INIT);
 			if (running && oldc != color) {
 				for (screen = 0; screen < nscreens; screen++) {
-					XSetWindowBackground(dpy,
+					if(locks[screen]->bgmap)
-					                     locks[screen]->win,
+						XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
-					                     locks[screen]->colors[color]);
+					else
-					XClearWindow(dpy, locks[screen]->win);
+						XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
 				}
 				oldc = color;
 			}
@@ -201,26 +203,18 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			rre = (XRRScreenChangeNotifyEvent*)&ev;
 			for (screen = 0; screen < nscreens; screen++) {
 				if (locks[screen]->win == rre->window) {
-					if (rre->rotation == RR_Rotate_90 ||
-					    rre->rotation == RR_Rotate_270)
-						XResizeWindow(dpy, locks[screen]->win,
-						              rre->height, rre->width);
-					else
 					XResizeWindow(dpy, locks[screen]->win,
 					              rre->width, rre->height);
 					XClearWindow(dpy, locks[screen]->win);
-					break;
 				}
 			}
-		} else {
+		} else for (screen = 0; screen < nscreens; screen++)
-			for (screen = 0; screen < nscreens; screen++)
 			XRaiseWindow(dpy, locks[screen]->win);
 	}
-	}
 }
 
 static struct lock *
-lockscreen(Display *dpy, struct xrandr *rr, int screen)
+lockscreen(Display *dpy, struct xrandr *rr, int screen,Imlib_Image *image, int use_bg_image)
 {
 	char curs[] = {0, 0, 0, 0, 0, 0, 0, 0};
 	int i, ptgrab, kbgrab;
@@ -241,6 +235,16 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 		lock->colors[i] = color.pixel;
 	}
 
+	if(image && use_bg_image == 1) {
+		lock->bgmap = XCreatePixmap(dpy, lock->root, DisplayWidth(dpy, lock->screen), DisplayHeight(dpy, lock->screen), DefaultDepth(dpy, lock->screen));
+		imlib_context_set_image(image);
+		imlib_context_set_display(dpy);
+		imlib_context_set_visual(DefaultVisual(dpy, lock->screen));
+		imlib_context_set_colormap(DefaultColormap(dpy, lock->screen));
+		imlib_context_set_drawable(lock->bgmap);
+		imlib_render_image_on_drawable(0, 0);
+		imlib_free_image();
+	}
 	/* init */
 	wa.override_redirect = 1;
 	wa.background_pixel = lock->colors[INIT];
@@ -256,6 +260,10 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	                                &color, &color, 0, 0);
 	XDefineCursor(dpy, lock->win, invisible);
 
+	if(lock->bgmap)
+		XSetWindowBackgroundPixmap(dpy, lock->win, lock->bgmap);
+
+
 	/* Try to grab mouse pointer *and* keyboard for 600ms, else fail the lock */
 	for (i = 0, ptgrab = kbgrab = -1; i < 6; i++) {
 		if (ptgrab != GrabSuccess) {
@@ -300,7 +308,7 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 static void
 usage(void)
 {
-	die("usage: slock [-v] [cmd [arg ...]]\n");
+	die("\nusage: slock [options]\noptions:\n\t-v\tPrint version and exit.\n\t-i\t<full path to image file to display>\n");
 }
 
 int
@@ -314,14 +322,25 @@ main(int argc, char **argv) {
 	const char *hash;
 	Display *dpy;
 	int s, nlocks, nscreens;
+	Imlib_Image image;
+	int use_bg_image = 0;
+	int option = 0;
 
-	ARGBEGIN {
+	while ((option = getopt(argc, argv,"vi:")) != -1) {
-	case 'v':
+		switch (option) {
-		fprintf(stderr, "slock-"VERSION"\n");
+			case 'v' :
-		return 0;
+				die("slock-"VERSION" mod-bgimage\n");
-	default:
+				break;
-		usage();
+			case 'i' :
-	} ARGEND
+				use_bg_image = 1;
+				image = imlib_load_image(optarg);
+				if(!image) {
+				die("slock: unable to load image.\n");
+				}		
+             			break;
+			default: usage(); 
+		}
+	}
 
 	/* validate drop-user and -group */
 	errno = 0;
@@ -363,7 +382,7 @@ main(int argc, char **argv) {
 	if (!(locks = calloc(nscreens, sizeof(struct lock *))))
 		die("slock: out of memory\n");
 	for (nlocks = 0, s = 0; s < nscreens; s++) {
-		if ((locks[s] = lockscreen(dpy, &rr, s)) != NULL)
+		if ((locks[s] = lockscreen(dpy, &rr, s, image, use_bg_image)) != NULL)
 			nlocks++;
 		else
 			break;