suckless/slock/slock-dwmlogo-20210324.diff

diff --git a/config.def.h b/config.def.h
index 9855e21..0940fb8 100644
--- a/config.def.h
+++ b/config.def.h
@@ -3,10 +3,30 @@ static const char *user  = "nobody";
 static const char *group = "nogroup";
 
 static const char *colorname[NUMCOLS] = {
-	[INIT] =   "black",     /* after initialization */
+	[BACKGROUND] =   "black",     /* after initialization */
+	[INIT] =   "#2d2d2d",     /* after initialization */
 	[INPUT] =  "#005577",   /* during input */
 	[FAILED] = "#CC3333",   /* wrong password */
 };
 
 /* treat a cleared input like a wrong password (color) */
 static const int failonclear = 1;
+
+/* insert grid pattern with scale 1:1, the size can be changed with logosize */
+static const int logosize = 75;
+static const int logow = 12;	/* grid width and height for right center alignment*/
+static const int logoh = 6;
+
+static XRectangle rectangles[9] = {
+	/* x	y	w	h */
+	{ 0,	3,	1,	3 },
+	{ 1,	3,	2,	1 },
+	{ 0,	5,	8,	1 },
+	{ 3,	0,	1,	5 },
+	{ 5,	3,	1,	2 },
+	{ 7,	3,	1,	2 },
+	{ 8,	3,	4,	1 },
+	{ 9,	4,	1,	2 },
+	{ 11,	4,	1,	2 },
+
+};
diff --git a/config.mk b/config.mk
index 74429ae..08356e8 100644
--- a/config.mk
+++ b/config.mk
@@ -10,12 +10,20 @@ MANPREFIX = ${PREFIX}/share/man
 X11INC = /usr/X11R6/include
 X11LIB = /usr/X11R6/lib
 
+# Xinerama, comment if you don't want it
+XINERAMALIBS  = -lXinerama
+XINERAMAFLAGS = -DXINERAMA
+
+# freetype
+FREETYPELIBS = -lXft
+FREETYPEINC = /usr/include/freetype2
+
 # includes and libs
-INCS = -I. -I/usr/include -I${X11INC}
-LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr
+INCS = -I. -I/usr/include -I${X11INC} -I${FREETYPEINC}
+LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS} -lXext -lXrandr
 
 # flags
-CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H
+CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -DHAVE_SHADOW_H ${XINERAMAFLAGS}
 CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
 LDFLAGS = -s ${LIBS}
 COMPATSRC = explicit_bzero.c
diff --git a/slock.c b/slock.c
index 5ae738c..3ea9b7f 100644
--- a/slock.c
+++ b/slock.c
@@ -1,5 +1,6 @@
 /* See LICENSE file for license details. */
-#define _XOPEN_SOURCE 500
+#define _XOPEN_SOURCE   500
+#define LENGTH(X)       (sizeof X / sizeof X[0])
 #if HAVE_SHADOW_H
 #include <shadow.h>
 #endif
@@ -15,9 +16,13 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include <X11/extensions/Xrandr.h>
+#ifdef XINERAMA
+#include <X11/extensions/Xinerama.h>
+#endif
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
+#include <X11/Xft/Xft.h>
 
 #include "arg.h"
 #include "util.h"
@@ -25,17 +30,25 @@
 char *argv0;
 
 enum {
+	BACKGROUND,
 	INIT,
 	INPUT,
 	FAILED,
 	NUMCOLS
 };
 
+#include "config.h"
+
 struct lock {
 	int screen;
 	Window root, win;
 	Pixmap pmap;
 	unsigned long colors[NUMCOLS];
+	unsigned int x, y;
+	unsigned int xoff, yoff, mw, mh;
+	Drawable drawable;
+	GC gc;
+	XRectangle rectangles[LENGTH(rectangles)];
 };
 
 struct xrandr {
@@ -44,8 +57,6 @@ struct xrandr {
 	int errbase;
 };
 
-#include "config.h"
-
 static void
 die(const char *errstr, ...)
 {
@@ -124,6 +135,32 @@ gethash(void)
 	return hash;
 }
 
+static void
+resizerectangles(struct lock *lock)
+{
+	int i;
+
+	for (i = 0; i < LENGTH(rectangles); i++){
+		lock->rectangles[i].x = (rectangles[i].x * logosize)
+                                + lock->xoff + ((lock->mw) / 2) - (logow / 2 * logosize);
+		lock->rectangles[i].y = (rectangles[i].y * logosize)
+                                + lock->yoff + ((lock->mh) / 2) - (logoh / 2 * logosize);
+		lock->rectangles[i].width = rectangles[i].width * logosize;
+		lock->rectangles[i].height = rectangles[i].height * logosize;
+	}
+}
+
+static void
+drawlogo(Display *dpy, struct lock *lock, int color)
+{
+	XSetForeground(dpy, lock->gc, lock->colors[BACKGROUND]);
+	XFillRectangle(dpy, lock->drawable, lock->gc, 0, 0, lock->x, lock->y);
+	XSetForeground(dpy, lock->gc, lock->colors[color]);
+	XFillRectangles(dpy, lock->drawable, lock->gc, lock->rectangles, LENGTH(rectangles));
+	XCopyArea(dpy, lock->drawable, lock->win, lock->gc, 0, 0, lock->x, lock->y, 0, 0);
+	XSync(dpy, False);
+}
+
 static void
 readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
        const char *hash)
@@ -190,10 +227,7 @@ 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,
-					                     locks[screen]->win,
-					                     locks[screen]->colors[color]);
-					XClearWindow(dpy, locks[screen]->win);
+					drawlogo(dpy, locks[screen], color);
 				}
 				oldc = color;
 			}
@@ -228,6 +262,10 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	XColor color, dummy;
 	XSetWindowAttributes wa;
 	Cursor invisible;
+#ifdef XINERAMA
+	XineramaScreenInfo *info;
+	int n;
+#endif
 
 	if (dpy == NULL || screen < 0 || !(lock = malloc(sizeof(struct lock))))
 		return NULL;
@@ -241,12 +279,31 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 		lock->colors[i] = color.pixel;
 	}
 
+	lock->x = DisplayWidth(dpy, lock->screen);
+	lock->y = DisplayHeight(dpy, lock->screen);
+#ifdef XINERAMA
+	if ((info = XineramaQueryScreens(dpy, &n))) {
+		lock->xoff = info[0].x_org;
+		lock->yoff = info[0].y_org;
+		lock->mw = info[0].width;
+		lock->mh = info[0].height;
+	} else
+#endif
+	{
+		lock->xoff = lock->yoff = 0;
+		lock->mw = lock->x;
+		lock->mh = lock->y;
+	}
+	lock->drawable = XCreatePixmap(dpy, lock->root,
+            lock->x, lock->y, DefaultDepth(dpy, screen));
+	lock->gc = XCreateGC(dpy, lock->root, 0, NULL);
+	XSetLineAttributes(dpy, lock->gc, 1, LineSolid, CapButt, JoinMiter);
+
 	/* init */
 	wa.override_redirect = 1;
-	wa.background_pixel = lock->colors[INIT];
+	wa.background_pixel = lock->colors[BACKGROUND];
 	lock->win = XCreateWindow(dpy, lock->root, 0, 0,
-	                          DisplayWidth(dpy, lock->screen),
-	                          DisplayHeight(dpy, lock->screen),
+	                          lock->x, lock->y,
 	                          0, DefaultDepth(dpy, lock->screen),
 	                          CopyFromParent,
 	                          DefaultVisual(dpy, lock->screen),
@@ -256,6 +313,8 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	                                &color, &color, 0, 0);
 	XDefineCursor(dpy, lock->win, invisible);
 
+	resizerectangles(lock);
+
 	/* 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) {
@@ -276,6 +335,7 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 				XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
 
 			XSelectInput(dpy, lock->root, SubstructureNotifyMask);
+			drawlogo(dpy, lock, INIT);
 			return lock;
 		}
 
@@ -391,5 +451,12 @@ main(int argc, char **argv) {
 	/* everything is now blank. Wait for the correct password */
 	readpw(dpy, &rr, locks, nscreens, hash);
 
+	for (nlocks = 0, s = 0; s < nscreens; s++) {
+		XFreePixmap(dpy, locks[s]->drawable);
+		XFreeGC(dpy, locks[s]->gc);
+	}
+
+	XSync(dpy, 0);
+	XCloseDisplay(dpy);
 	return 0;
 }