dmenu

commit 4afde72c19893de285eb01d123c7bab0990831d0
parent 7f88035ee042dd2e83b6260b4a0c85b3b716fb68
Author: Markus Hanetzok <markus@hanetzok.net>
Date:   Fri, 10 Oct 2025 00:14:45 +0200

apply center & border patch

Diffstat:
M
config.def.h
 | 
8
++++++++
M
dmenu.1
 | 
2
++
M
dmenu.c
 | 
46
+++++++++++++++++++++++++++++++++++++++-------

3 files changed, 49 insertions(+), 7 deletions(-)
diff --git a/config.def.h b/config.def.h
@@ -3,6 +3,9 @@
 
 static int topbar = 1;                      /* -b  option; if 0, dmenu appears at bottom     */
 static int fuzzy  = 1;                      /* -F  option; if 0, dmenu doesn't use fuzzy matching */
+static int centered = 1;                    /* -c option; centers dmenu on screen */
+static int min_width = 500;                    /* minimum width when centered */
+static const float menu_height_ratio = 4.0f;  /* This is the ratio used in the original calculation */
 /* -fn option overrides fonts[0]; default X11 font or font set */
 static const char *fonts[] = {
 	"monospace:size=10"
@@ -22,3 +25,8 @@ static unsigned int lines      = 0;
  * for example: " /?\"&[]"
  */
 static const char worddelimiters[] = " ";
+
+
+/* Size of the window border */
+static unsigned int border_width = 3;
+
diff --git a/dmenu.1 b/dmenu.1
@@ -42,6 +42,8 @@ dmenu appears at the bottom of the screen.
 .TP
 .B \-F
 disables fuzzy matching.
+.B \-c
+dmenu appears centered on the screen.
 .TP
 .B \-f
 dmenu grabs the keyboard before reading stdin if not reading from a tty. This
diff --git a/dmenu.c b/dmenu.c
@@ -30,6 +30,7 @@ enum { SchemeNorm, SchemeSel, SchemeOut, SchemeLast }; /* color schemes */
 
 struct item {
 	char *text;
+	unsigned int width;
 	struct item *left, *right;
 	int out;
 	double distance;
@@ -97,6 +98,15 @@ calcoffsets(void)
 			break;
 }
 
+static int
+max_textw(void)
+{
+	int len = 0;
+	for (struct item *item = items; item && item->text; item++)
+		len = MAX(item->width, len);
+	return len;
+}
+
 static void
 cleanup(void)
 {
@@ -649,6 +659,7 @@ readstdin(void)
 			line[len - 1] = '\0';
 		if (!(items[i].text = strdup(line)))
 			die("strdup:");
+		items[i].width = TEXTW(line);
 
 		items[i].out = 0;
 	}
@@ -722,6 +733,7 @@ setup(void)
 	bh = drw->fonts->h + 2;
 	lines = MAX(lines, 0);
 	mh = (lines + 1) * bh;
+	promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 #ifdef XINERAMA
 	i = 0;
 	if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
@@ -748,9 +760,16 @@ setup(void)
 				if (INTERSECT(x, y, 1, 1, info[i]) != 0)
 					break;
 
-		x = info[i].x_org;
-		y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
-		mw = info[i].width;
+		if (centered) {
+			mw = MIN(MAX(max_textw() + promptw, min_width), info[i].width);
+			x = info[i].x_org + ((info[i].width  - mw) / 2);
+			y = info[i].y_org + ((info[i].height - mh) / menu_height_ratio);
+		} else {
+			x = info[i].x_org;
+			y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
+			mw = info[i].width;
+		}
+
 		XFree(info);
 	} else
 #endif
@@ -758,9 +777,16 @@ setup(void)
 		if (!XGetWindowAttributes(dpy, parentwin, &wa))
 			die("could not get embedding window attributes: 0x%lx",
 			    parentwin);
-		x = 0;
-		y = topbar ? 0 : wa.height - mh;
-		mw = wa.width;
+
+		if (centered) {
+			mw = MIN(MAX(max_textw() + promptw, min_width), wa.width);
+			x = (wa.width  - mw) / 2;
+			y = (wa.height - mh) / 2;
+		} else {
+			x = 0;
+			y = topbar ? 0 : wa.height - mh;
+			mw = wa.width;
+		}
 	}
 	promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 	inputw = mw / 3; /* input width: ~33% of monitor width */
@@ -770,9 +796,11 @@ setup(void)
 	swa.override_redirect = True;
 	swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
 	swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
-	win = XCreateWindow(dpy, root, x, y, mw, mh, 0,
+	win = XCreateWindow(dpy, root, x, y, mw, mh, border_width,
 	                    CopyFromParent, CopyFromParent, CopyFromParent,
 	                    CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
+	if (border_width)
+		XSetWindowBorder(dpy, win, scheme[SchemeSel][ColBg].pixel);
 	XSetClassHint(dpy, win, &ch);
 
 	/* input methods */
@@ -821,6 +849,8 @@ main(int argc, char *argv[])
 			fuzzy = 0;
 		else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
 			fast = 1;
+		else if (!strcmp(argv[i], "-c"))   /* centers dmenu on screen */
+			centered = 1;
 		else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
 			fstrncmp = strncasecmp;
 			fstrstr = cistrstr;
@@ -845,6 +875,8 @@ main(int argc, char *argv[])
 			colors[SchemeSel][ColFg] = argv[++i];
 		else if (!strcmp(argv[i], "-w"))   /* embedding window id */
 			embed = argv[++i];
+		else if (!strcmp(argv[i], "-bw"))
+			border_width = atoi(argv[++i]); /* border width */
 		else
 			usage();