Patch to allow custom command for bar center text

config.h

@@ -1,10 +1,12 @@
 /* See LICENSE file for copyright and license details. */
 
 /* appearance */
-static const unsigned int borderpx = 3; /* border pixel of windows */
+static const char center_command[] = "/home/aselimov/bin/title_text.sh";
+static const unsigned int borderpx = 2; /* border pixel of windows */
 static const unsigned int snap = 32;    /* snap pixel */
 static const unsigned int gappih = 15;  /* horiz inner gap between windows */
 static const unsigned int gappiv = 15;  /* vert inner gap between windows */
+static const int vertpadbar = 5;        /* vertical padding for statusbar */
 static const unsigned int gappoh =
     10; /* horiz outer gap between windows and screen edge */
 static const unsigned int gappov =
@@ -17,7 +19,7 @@ static int smartgaps =
 static const int showbar = 1; /* 0 means no bar */
 static const int topbar = 1;  /* 0 means bottom bar */
 static const char *fonts[] = {
-    "FiraCode Nerd Font:size=11:antialias=true:autohint=true"};
+    "SauceCodePro Nerd Font:size=12:antialias=true:autohint=true"};
 static const char dmenufont[] =
     "SauceCodePro Nerd Font:size=10:antialias=true:autohint=true";
 static const char col_gray1[] = "#191919";
@@ -30,12 +32,12 @@ static const char col_red[] = "#de6e76";
 static const char col_yellow[] = "#d68c67";
 static const char col_teal[] = "#8ec07c";
 static const char col_purple[] = "#b16286";
-static const unsigned int baralpha = 175;
+static const unsigned int baralpha = OPAQUE;
 static const unsigned int borderalpha = OPAQUE;
 static const char *colors[][3] = {
     /*               fg         bg         border   */
     [SchemeNorm] = {col_gray3, col_gray1, col_gray1},
-    [SchemeSel] = {col_gray3, col_cyan, col_cyan},
+    [SchemeSel] = {col_gray3, col_cyan, col_gray3},
     [SchemeStatus] = {col_gray3, col_gray1, col_gray1},
     [SchemeTagsSel] = {col_gray3, col_gray1, col_gray1},
     // Tagbar left unselected {text,background,not used but cannot be empty}
@@ -77,6 +79,7 @@ static const Rule rules[] = {
     {"Sxiv", NULL, NULL, 0, 1, 0, 1, -1},
     {"matplotlib", NULL, NULL, 0, 1, 0, 1, -1},
     {"Matplotlib", NULL, NULL, 0, 1, 0, 1, -1},
+    {"xcom2.exe", NULL, NULL, 0, 1, 0, 1, -1},
     {NULL, NULL, "Figure 1", 0, 1, 0, 1, -1},
     {NULL, NULL, "Figure 2", 0, 1, 0, 1, -1},
     {NULL, NULL, "Figure 3", 0, 1, 0, 1, -1},

dwm.c

@@ -51,6 +51,7 @@
 #include "util.h"
 
 /* macros */
+#define MAX_LINE_LENGTH 1024
 #define BUTTONMASK (ButtonPressMask | ButtonReleaseMask)
 #define CLEANMASK(mask)                                                        \
   (mask & ~(numlockmask | LockMask) &                                          \
@@ -198,6 +199,7 @@ typedef struct {
 } Rule;
 
 /* function declarations */
+char *exec_command_last_line(const char *command);
 static void applyrules(Client *c);
 static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int *bw,
                           int interact);
@@ -899,20 +901,20 @@ void drawbar(Monitor *m) {
   }
   w = blw = TEXTW(m->ltsymbol);
   drw_setscheme(drw, scheme[SchemeTagsNorm]);
-  x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
-
+  static char text[MAX_LINE_LENGTH];
+  strcpy(text, exec_command_last_line(center_command));
+  int center_length = TEXTW(text);
+  int center_x = (m->ww - center_length) / 2;
+  x = drw_text(drw, x, 0, center_x - x, bh, lrpad / 2, m->ltsymbol, 0);
+  x = center_x;
   if ((w = m->ww - tw - x) > bh) {
     if (m->sel) {
-      //			drw_setscheme(drw, scheme[m == selmon ?
-      // SchemeInfoSel : SchemeInfoNorm]);
-      drw_text(drw, x, 0, w, bh, lrpad / 2, " ", 0);
-      if (m->sel->isfloating)
-        drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
+      drw_setscheme(drw, scheme[SchemeNorm]);
+      drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
     } else {
-      drw_setscheme(drw, scheme[SchemeInfoNorm]);
-      drw_rect(drw, x, 0, w, bh, 1, 1);
     }
   }
+
   drw_map(drw, m->barwin, 0, 0, m->ww, bh);
 }
 
@@ -1373,8 +1375,8 @@ void moveresize(const Arg *arg) {
              &wAbs, &h, &hAbs) != 8)
     return;
 
-  /* compute new window position; prevent window from be positioned outside the
-   * current monitor */
+  /* compute new window position; prevent window from be positioned outside
+   * the current monitor */
   nw = c->w + w;
   if (wAbs == 'W')
     nw = w < selmon->mw - 2 * c->bw ? w : selmon->mw - 2 * c->bw;
@@ -1603,9 +1605,11 @@ void run(void) {
   XEvent ev;
   /* main event loop */
   XSync(dpy, False);
-  while (running && !XNextEvent(dpy, &ev))
+  int ticks = 0;
+  while (running && !XNextEvent(dpy, &ev)) {
     if (handler[ev.type])
       handler[ev.type](&ev); /* call handler */
+  }
 }
 
 void scan(void) {
@@ -1781,7 +1785,7 @@ void setup(void) {
   if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
     die("no fonts could be loaded.");
   lrpad = drw->fonts->h;
-  bh = drw->fonts->h + 2;
+  bh = drw->fonts->h + vertpadbar;
   updategeom();
   /* init atoms */
   utf8string = XInternAtom(dpy, "UTF8_STRING", False);
@@ -2601,3 +2605,38 @@ void runAutostart(void) {
   system("cd ~/.dwm; ./autostart_blocking.sh");
   system("cd ~/.dwm; ./autostart.sh &");
 }
+
+char *exec_command_last_line(const char *command) {
+  static char last_line[MAX_LINE_LENGTH];
+
+  if (!command) {
+    return NULL;
+  }
+
+  FILE *pipe = popen(command, "r");
+  if (!pipe) {
+    return NULL;
+  }
+
+  char buffer[MAX_LINE_LENGTH];
+  int found_line = 0;
+
+  // Read all lines and keep track of the last non-empty one
+  while (fgets(buffer, sizeof(buffer), pipe) != NULL) {
+    // Remove trailing newline if present
+    size_t len = strlen(buffer);
+    if (len > 0 && buffer[len - 1] == '\n') {
+      buffer[len - 1] = '\0';
+      len--;
+    }
+
+    // Skip empty lines
+    if (len > 0) {
+      strcpy(last_line, buffer);
+      found_line = 1;
+    }
+  }
+
+  pclose(pipe);
+  return found_line ? last_line : NULL;
+}