Adding dwmlogo patch ref. #5

README.md

@@ -26,6 +26,8 @@ slock tool, how to install it and how it works.
 
 ### Changelog:
 
+2021-09-13 - Added the dwm logo patch
+
 2021-09-09 - Added the auto-timeout, failure-command and secret-password patches
 
 2021-06-08 - Added the color message patch
@@ -69,6 +71,9 @@ slock tool, how to install it and how it works.
       - the monitor will automatically be activated by pressing a key or moving the mouse and the
         password can be entered then
 
+   - [dwmlogo](https://tools.suckless.org/slock/patches/dwmlogo/)
+      - draws the dwm logo which changes color based on the state
+
    - [failure-command](https://tools.suckless.org/slock/patches/failure-command/)
       - allows for a command to be run after a specified number of incorrect attempts
 

config.def.h

@@ -3,6 +3,9 @@ static const char *user  = "nobody";
 static const char *group = "nogroup"; // use "nobody" for arch
 
 static const char *colorname[NUMCOLS] = {
+	#if DWM_LOGO_PATCH
+	[BACKGROUND] =  "#2d2d2d", /* after initialization */
+	#endif // DWM_LOGO_PATCH
 	[INIT] =   "black",     /* after initialization */
 	[INPUT] =  "#005577",   /* during input */
 	[FAILED] = "#CC3333",   /* wrong password */
@@ -28,11 +31,34 @@ static const char * text_color = "#ffffff";
 static const char * font_name = "6x10";
 #endif // MESSAGE_PATCH | COLOR_MESSAGE_PATCH
 
+#if DWM_LOGO_PATCH
+/* 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[] = {
+   /* 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 },
+};
+#endif // DWM_LOGO_PATCH
+
 #if XRESOURCES_PATCH
 /*
  * Xresources preferences to load at startup
  */
 ResourcePref resources[] = {
+		#if DWM_LOGO_PATCH
+		{ "color2",       STRING,  &colorname[BACKGROUND] },
+		#endif //DWM_LOGO_PATCH
 		{ "color0",       STRING,  &colorname[INIT] },
 		{ "color4",       STRING,  &colorname[INPUT] },
 		{ "color1",       STRING,  &colorname[FAILED] },

config.mk

@@ -10,21 +10,22 @@ MANPREFIX = ${PREFIX}/share/man
 X11INC = /usr/X11R6/include
 X11LIB = /usr/X11R6/lib
 
-# Uncomment for message patch / MESSAGE_PATCH / COLORMESSAGE_PATCH
+# Uncomment for message patch / MESSAGE_PATCH / COLORMESSAGE_PATCH / DWM_LOGO_PATCH
-#XINERAMA=-lXinerama
+XINERAMA=-lXinerama
+XINERAMAFLAGS = -DXINERAMA
 
 # Uncomment for pam auth patch / PAMAUTH_PATCH
 #PAM=-lpam
 
 # Uncomment for blur pixelated screen patch / BLUR_PIXELATED_SCREEN_PATCH
-#IMLIB=-lImlib2
+IMLIB=-lImlib2
 
 # includes and libs
 INCS = -I. -I/usr/include -I${X11INC}
 LIBS = -L/usr/lib -lc -lcrypt -L${X11LIB} -lX11 -lXext -lXrandr ${XINERAMA} ${PAM} ${IMLIB}
 
 # 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

patch/dwmlogo.c

@@ -0,0 +1,29 @@
+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)
+{
+   #if BLUR_PIXELATED_SCREEN_PATCH
+   lock->drawable = lock->bgmap;
+   #else
+   XSetForeground(dpy, lock->gc, lock->colors[BACKGROUND]);
+   XFillRectangle(dpy, lock->drawable, lock->gc, 0, 0, lock->x, lock->y);
+   #endif // BLUR_PIXELATED_SCREEN_PATCH
+   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);
+}

patch/dwmlogo.h

@@ -0,0 +1,2 @@
+static void resizerectangles(struct lock *lock);
+static void drawlogo(Display *dpy, struct lock *lock, int color);

patch/include.c

@@ -9,6 +9,10 @@
 #include "message.c"
 #endif
 
+#if DWM_LOGO_PATCH
+#include "dwmlogo.c"
+#endif
+
 #if KEYPRESS_FEEDBACK_PATCH
 #include "keypress_feedback.c"
 #endif

patch/include.h

@@ -3,6 +3,10 @@
 #include "blur_pixelated_screen.h"
 #endif
 
+#if DWM_LOGO_PATCH
+#include "dwmlogo.h"
+#endif
+
 #if PAMAUTH_PATCH
 #include "pamauth.h"
 #endif
@@ -10,7 +14,3 @@
 #if KEYPRESS_FEEDBACK_PATCH
 #include "keypress_feedback.h"
 #endif
-
-#if XRESOURCES_PATCH
-#include "xresources.h"
-#endif

patch/xresources.c

@@ -1,3 +1,4 @@
+#include <X11/Xresource.h>
 #include <math.h>
 
 int
@@ -47,6 +48,6 @@ config_init(Display *dpy)
 		return;
 
 	db = XrmGetStringDatabase(resm);
-	for (p = resources; p < resources + LEN(resources); p++)
+	for (p = resources; p < resources + LENGTH(resources); p++)
 		resource_load(db, p->name, p->type, p->dst);
 }

patch/xresources.h

@@ -1,17 +0,0 @@
-#include <X11/Xresource.h>
-
-/* macros */
-#define LEN(a) (sizeof(a) / sizeof(a)[0])
-
-/* Xresources preferences */
-enum resource_type {
-	STRING = 0,
-	INTEGER = 1,
-	FLOAT = 2
-};
-
-typedef struct {
-	char *name;
-	enum resource_type type;
-	void *dst;
-} ResourcePref;

patches.def.h

@@ -65,6 +65,11 @@
  */
 #define DPMS_PATCH 0
 
+/* This patch draws the dwm logo which changes color based on the state.
+ * https://tools.suckless.org/slock/patches/dwmlogo/
+ */
+#define DWM_LOGO_PATCH 0
+
 /* This patch allows for a command to be run after a specified number of incorrect attempts.
  * https://tools.suckless.org/slock/patches/failure-command/
  */

slock.c

@@ -39,6 +39,9 @@
 #if DPMS_PATCH
 #include <X11/extensions/dpms.h>
 #endif // DPMS_PATCH
+#ifdef XINERAMA
+#include <X11/extensions/Xinerama.h>
+#endif
 
 #include "arg.h"
 #include "util.h"
@@ -57,6 +60,9 @@ static time_t locktime;
 #endif // QUICKCANCEL_PATCH
 
 enum {
+	#if DWM_LOGO_PATCH && !BLUR_PIXELATED_SCREEN_PATCH
+	BACKGROUND,
+	#endif // DWM_LOGO_PATCH
 	INIT,
 	INPUT,
 	FAILED,
@@ -72,6 +78,23 @@ enum {
 	NUMCOLS
 };
 
+#if XRESOURCES_PATCH
+/* Xresources preferences */
+enum resource_type {
+	STRING = 0,
+	INTEGER = 1,
+	FLOAT = 2
+};
+
+typedef struct {
+	char *name;
+	enum resource_type type;
+	void *dst;
+} ResourcePref;
+#endif // XRESOURCES_PATCH
+
+#include "config.h"
+
 struct lock {
 	int screen;
 	Window root, win;
@@ -80,6 +103,13 @@ struct lock {
 	Pixmap bgmap;
 	#endif // BLUR_PIXELATED_SCREEN_PATCH
 	unsigned long colors[NUMCOLS];
+	#if DWM_LOGO_PATCH
+	unsigned int x, y;
+	unsigned int xoff, yoff, mw, mh;
+	Drawable drawable;
+	GC gc;
+	XRectangle rectangles[LENGTH(rectangles)];
+	#endif // DWM_LOGO_PATCH
 };
 
 #if SECRET_PASSWORD_PATCH
@@ -97,7 +127,6 @@ struct xrandr {
 };
 
 #include "patch/include.h"
-#include "config.h"
 
 static void
 die(const char *errstr, ...)
@@ -377,17 +406,20 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 			#endif // CAPSCOLOR_PATCH
 			if (running && oldc != color) {
 				for (screen = 0; screen < nscreens; screen++) {
-					#if BLUR_PIXELATED_SCREEN_PATCH
+					#if DWM_LOGO_PATCH
+					drawlogo(dpy, locks[screen], color);
+					#elif BLUR_PIXELATED_SCREEN_PATCH
 					if (locks[screen]->bgmap)
 						XSetWindowBackgroundPixmap(dpy, locks[screen]->win, locks[screen]->bgmap);
 					else
 						XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[0]);
+					XClearWindow(dpy, locks[screen]->win);
 					#else
 					XSetWindowBackground(dpy,
 					                     locks[screen]->win,
 					                     locks[screen]->colors[color]);
-					#endif // BLUR_PIXELATED_SCREEN_PATCH
 					XClearWindow(dpy, locks[screen]->win);
+					#endif // BLUR_PIXELATED_SCREEN_PATCH
 					#if MESSAGE_PATCH || COLOR_MESSAGE_PATCH
 					writemessage(dpy, locks[screen]->win, screen);
 					#endif // MESSAGE_PATCH | COLOR_MESSAGE_PATCH
@@ -439,7 +471,12 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	XColor color, dummy;
 	XSetWindowAttributes wa;
 	Cursor invisible;
-
+	#if DWM_LOGO_PATCH
+	#ifdef XINERAMA
+	XineramaScreenInfo *info;
+	int n;
+	#endif
+	#endif // DWM_LOGO_PATCH
 	#if AUTO_TIMEOUT_PATCH
 	time(&lasttouched);
 	#endif // AUTO_TIMEOUT_PATCH
@@ -460,12 +497,43 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 		lock->colors[i] = color.pixel;
 	}
 
+	#if DWM_LOGO_PATCH
+	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 // XINERAMA
+	{
+		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);
+	#endif // DWM_LOGO_PATCH
+
 	/* init */
 	wa.override_redirect = 1;
+	#if DWM_LOGO_PATCH && BLUR_PIXELATED_SCREEN_PATCH
+	#elif DWM_LOGO_PATCH
+	wa.background_pixel = lock->colors[BACKGROUND];
+	#else
 	wa.background_pixel = lock->colors[INIT];
+	#endif // DWM_LOGO_PATCH
 	lock->win = XCreateWindow(dpy, lock->root, 0, 0,
+	                          #if DWM_LOGO_PATCH
+	                          lock->x,
+	                          lock->y,
+	                          #else
 	                          DisplayWidth(dpy, lock->screen),
 	                          DisplayHeight(dpy, lock->screen),
+	                          #endif // DWM_LOGO_PATCH
 	                          0, DefaultDepth(dpy, lock->screen),
 	                          CopyFromParent,
 	                          DefaultVisual(dpy, lock->screen),
@@ -479,6 +547,10 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 	                                &color, &color, 0, 0);
 	XDefineCursor(dpy, lock->win, invisible);
 
+	#if DWM_LOGO_PATCH
+	resizerectangles(lock);
+	#endif // DWM_LOGO_PATCH
+
 	/* 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) {
@@ -510,6 +582,9 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 			#if QUICKCANCEL_PATCH
 			locktime = time(NULL);
 			#endif // QUICKCANCEL_PATCH
+			#if DWM_LOGO_PATCH
+			drawlogo(dpy, lock, INIT);
+			#endif // DWM_LOGO_PATCH
 			#if ALPHA_PATCH
 			unsigned int opacity = (unsigned int)(alpha * 0xffffffff);
 			XChangeProperty(dpy, lock->win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False), XA_CARDINAL, 32, PropModeReplace, (unsigned char *)&opacity, 1L);
@@ -696,5 +771,15 @@ main(int argc, char **argv) {
 	XSync(dpy, 0);
 	#endif // DPMS_PATCH
 
+	#if DWM_LOGO_PATCH
+	for (nlocks = 0, s = 0; s < nscreens; s++) {
+		XFreePixmap(dpy, locks[s]->drawable);
+		XFreeGC(dpy, locks[s]->gc);
+	}
+
+	XSync(dpy, 0);
+	XCloseDisplay(dpy);
+	#endif // DWM_LOGO_PATCH
+
 	return 0;
 }