implemented bar for dwm (I miss status text), I plan that status text is read from stdin in dwm

Makefile

@@ -3,7 +3,7 @@
 
 include config.mk
 
-SRC = client.c dev.c draw.c event.c main.c util.c
+SRC = bar.c client.c dev.c draw.c event.c main.c util.c
 OBJ = ${SRC:.c=.o}
 MAN1 = dwm.1 
 BIN = dwm

bar.c

@@ -0,0 +1,40 @@
+/*
+ * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
+ * See LICENSE file for license details.
+ */
+
+#include "dwm.h"
+
+void
+draw_bar()
+{
+	int i;
+	dc.x = dc.y = 0;
+	dc.w = bw;
+	drawtext(NULL, False);
+
+	dc.w = 0;
+	for(i = 0; i < TLast; i++) {
+		dc.x += dc.w;
+		dc.w = textw(tags[i]) + dc.font.height;
+		if(i == tsel) {
+			swap((void **)&dc.fg, (void **)&dc.bg);
+			drawtext(tags[i], True);
+			swap((void **)&dc.fg, (void **)&dc.bg);
+		}
+		else
+			drawtext(tags[i], True);
+	}
+	if(sel) {
+		swap((void **)&dc.fg, (void **)&dc.bg);
+		dc.x += dc.w;
+		dc.w = textw(sel->name) + dc.font.height;
+		drawtext(sel->name, True);
+		swap((void **)&dc.fg, (void **)&dc.bg);
+	}
+	dc.w = textw(stext) + dc.font.height;
+	dc.x = bx + bw - dc.w;
+	drawtext(stext, False);
+	XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
+	XFlush(dpy);
+}

client.c

@@ -49,9 +49,9 @@ max(Arg *arg)
 	if(!sel)
 		return;
 	sel->x = sx;
-	sel->y = sy;
+	sel->y = sy + bh;
 	sel->w = sw - 2 * sel->border;
-	sel->h = sh - 2 * sel->border;
+	sel->h = sh - 2 * sel->border - bh;
 	craise(sel);
 	resize(sel, False);
 	discard_events(EnterWindowMask);
@@ -67,6 +67,7 @@ view(Arg *arg)
 
 	for(c = clients; c; c = next(c->next))
 		draw_client(c);
+	draw_bar();
 }
 
 void
@@ -131,7 +132,10 @@ tiling(Arg *arg)
 		if(c->tags[tsel] && !c->floating)
 			n++;
 
-	h = (n > 1) ? sh / (n - 1) : sh;
+	if(n > 1)
+		h = (sh - bh) / (n - 1);
+	else
+		h = sh - bh;
 
 	for(i = 0, c = clients; c; c = c->next) {
 		if(c->tags[tsel]) {
@@ -142,19 +146,19 @@ tiling(Arg *arg)
 			}
 			if(n == 1) {
 				c->x = sx;
-				c->y = sy;
+				c->y = sy + bh;
 				c->w = sw - 2 * c->border;
-				c->h = sh - 2 * c->border;
+				c->h = sh - 2 * c->border - bh;
 			}
 			else if(i == 0) {
 				c->x = sx;
-				c->y = sy;
+				c->y = sy + bh;
 				c->w = mw - 2 * c->border;
-				c->h = sh - 2 * c->border;
+				c->h = sh - 2 * c->border - bh;
 			}
 			else {
 				c->x = sx + mw;
-				c->y = sy + (i - 1) * h;
+				c->y = sy + (i - 1) * h + bh;
 				c->w = w - 2 * c->border;
 				c->h = h - 2 * c->border;
 			}
@@ -373,9 +377,11 @@ manage(Window w, XWindowAttributes *wa)
 	c->win = w;
 	c->tx = c->x = wa->x;
 	c->ty = c->y = wa->y;
+	if(c->y < bh)
+		c->ty = c->y += bh;
 	c->tw = c->w = wa->width;
 	c->h = wa->height;
-	c->th = th;
+	c->th = bh;
 	c->border = 1;
 	c->proto = win_proto(c->win);
 	update_size(c);
@@ -570,6 +576,7 @@ draw_client(Client *c)
 {
 	int i;
 	if(c == sel) {
+		draw_bar();
 		XUnmapWindow(dpy, c->title);
 		XSetWindowBorder(dpy, c->win, dc.fg);
 		return;
@@ -579,19 +586,18 @@ draw_client(Client *c)
 	XMapWindow(dpy, c->title);
 
 	dc.x = dc.y = 0;
-	dc.h = c->th;
 
 	dc.w = 0;
 	for(i = 0; i < TLast; i++) {
 		if(c->tags[i]) {
 			dc.x += dc.w;
 			dc.w = textw(c->tags[i]) + dc.font.height;
-			draw(True, c->tags[i]);
+			drawtext(c->tags[i], True);
 		}
 	}
 	dc.x += dc.w;
 	dc.w = textw(c->name) + dc.font.height;
-	draw(True, c->name);
+	drawtext(c->name, True);
 	XCopyArea(dpy, dc.drawable, c->title, dc.gc,
 			0, 0, c->tw, c->th, 0, 0);
 	XFlush(dpy);

draw.c

@@ -30,7 +30,7 @@ drawborder(void)
 }
 
 void
-draw(Bool border, const char *text)
+drawtext(const char *text, Bool border)
 {
 	int x, y, w, h;
 	unsigned int len;

dwm.h

@@ -88,19 +88,22 @@ struct Key {
 };
 
 extern Display *dpy;
-extern Window root;
+extern Window root, barwin;
 extern Atom wm_atom[WMLast], net_atom[NetLast];
 extern Cursor cursor[CurLast];
 extern Bool running, issel;
 extern void (*handler[LASTEvent])(XEvent *);
 extern void (*arrange)(Arg *);
 
-extern int tsel, screen, sx, sy, sw, sh, mw, th;
-extern char *tags[TLast];
+extern int tsel, screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
+extern char *tags[TLast], stext[1024];
 
 extern DC dc;
 extern Client *clients, *sel;
 
+/* bar.c */
+extern void draw_bar();
+
 /* client.c */
 extern void manage(Window w, XWindowAttributes *wa);
 extern void unmanage(Client *c);
@@ -126,7 +129,7 @@ extern void zoom(Arg *arg);
 extern void gravitate(Client *c, Bool invert);
 
 /* draw.c */
-extern void draw(Bool border, const char *text);
+extern void drawtext(const char *text, Bool border);
 extern unsigned long initcolor(const char *colstr);
 extern void initfont(const char *fontstr);
 extern unsigned int textnw(char *text, unsigned int len);

main.c

@@ -6,6 +6,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include <X11/cursorfont.h>
 #include <X11/Xatom.h>
@@ -34,7 +35,8 @@ Bool running = True;
 Bool issel;
 
 int tsel = Tdev; /* default tag */
-int screen, sx, sy, sw, sh, mw, th;
+int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
+char stext[1024];
 
 DC dc = {0};
 Client *clients = NULL;
@@ -219,12 +221,6 @@ main(int argc, char *argv[])
 	if(other_wm_running)
 		error("dwm: another window manager is already running\n");
 
-	sx = sy = 0;
-	sw = DisplayWidth(dpy, screen);
-	sh = DisplayHeight(dpy, screen);
-	mw = (sw * MASTERW) / 100;
-	issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
-
 	XSetErrorHandler(0);
 	x_error_handler = XSetErrorHandler(error_handler);
 
@@ -233,11 +229,9 @@ main(int argc, char *argv[])
 	wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
 	net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
 	net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
-
 	XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
 			PropModeReplace, (unsigned char *) net_atom, NetLast);
 
-
 	/* init cursors */
 	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
 	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
@@ -251,17 +245,38 @@ main(int argc, char *argv[])
 	dc.border = initcolor(BORDERCOLOR);
 	initfont(FONT);
 
-	th = dc.font.height + 4;
+	sx = sy = 0;
+	sw = DisplayWidth(dpy, screen);
+	sh = DisplayHeight(dpy, screen);
+	mw = (sw * MASTERW) / 100;
 
-	dc.drawable = XCreatePixmap(dpy, root, sw, th, DefaultDepth(dpy, screen));
-	dc.gc = XCreateGC(dpy, root, 0, 0);
+	wa.override_redirect = 1;
+	wa.background_pixmap = ParentRelative;
+	wa.event_mask = ExposureMask;
+
+	bx = by = 0;
+	bw = sw;
+	dc.h = bh = dc.font.height + 4;
+	barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
+			CopyFromParent, DefaultVisual(dpy, screen),
+			CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
+	XDefineCursor(dpy, barwin, cursor[CurNormal]);
+	XMapRaised(dpy, barwin);
+
+	issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
 
 	wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
 					| LeaveWindowMask;
 	wa.cursor = cursor[CurNormal];
+
 	XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
 
+	dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
+	dc.gc = XCreateGC(dpy, root, 0, 0);
+
+	strcpy(stext, "dwm-"VERSION);
 	scan_wins();
+	draw_bar();
 
 	while(running) {
 		XNextEvent(dpy, &ev);