mew

commit 5ca7cb9f16c4f1aff15f1eeb694275729fb5271f
parent df40719ca86475cfc9c2383a2aaf350994076021
Author: awy <awy@awy.one>
Date:   Fri, 19 Dec 2025 19:20:06 +0300

center patch

Diffstat:
M
config.def.h
 | 
9
++++++---
M
mew.1
 | 
3
+++
M
mew.c
 | 
50
+++++++++++++++++++++++++++++++++++++++++++-------

3 files changed, 52 insertions(+), 10 deletions(-)
diff --git a/config.def.h b/config.def.h
@@ -1,9 +1,12 @@
 /* See LICENSE file for copyright and license details. */
 /* Default settings; can be overriden by command line. */
 
-static int top              = 1;                       /* -b option; if 0, appear at bottom */
-static const char *fonts[]  = { "monospace:size=12" }; /* -f option overrides fonts[0] */
-static const char *prompt   = NULL;                    /* -p option; prompt to the left of input field */
+static int top                       = 1;                       /* -b option; if 0, appear at bottom */
+static int centered                  = 0;                       /* -c option; centers mew on screen */
+static int min_width                 = 300;                     /* minimum width when centered */
+static const float menu_height_ratio = 4.0f;                    /* This is the ratio used in the original calculation */
+static const char *fonts[]           = { "monospace:size=12" }; /* -f option overrides fonts[0] */
+static const char *prompt            = NULL;                    /* -p option; prompt to the left of input field */
 
 /*               fg         bg          */
 /* NORD */
diff --git a/mew.1 b/mew.1
@@ -37,6 +37,9 @@ is a script that lists programs in the user's $PATH and runs the result with
 .B \-b
 appear at the bottom of the screen.
 .TP
+.B \-c
+mew appears centered on the screen.
+.TP
 .B \-e
 execute input or selection with
 .BR /bin/sh ,
diff --git a/mew.c b/mew.c
@@ -51,6 +51,8 @@ static struct {
 
 static char text[BUFSIZ] = "";
 static int bh, mw, mh;
+static int out_w = 0;
+static int out_h = 0;
 static int inputw = 0, promptw, passwd = 0;
 static int32_t scale = 1;
 static int lrpad; /* sum of left and right padding */
@@ -220,6 +222,15 @@ calcoffsets(void)
 			break;
 }
 
+static int
+max_textw(void)
+{
+	int len = 0;
+	for (struct item *item = items; item && item->text; item++)
+		len = MAX(TEXTW(item->text), len);
+	return len;
+}
+
 static void
 cleanup(void)
 {
@@ -816,7 +827,12 @@ surface_handle_preferred_scale(void *data,
 	loadfonts();
 
 	/* the scale of the surface is only known after an initial draw, not before :( */
-	zwlr_layer_surface_v1_set_size(layer_surface, 0, mh / scale);
+	if (centered == 1) {
+		promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
+		mw = MIN(MAX(max_textw() + promptw, min_width * scale), out_w);
+		zwlr_layer_surface_v1_set_size(layer_surface, (mw / scale) - 1, mh / scale);
+	} else
+		zwlr_layer_surface_v1_set_size(layer_surface, 0, mh / scale);
 	redraw();
 }
 
@@ -848,9 +864,19 @@ output_handle_name(void *data, struct wl_output *wl_output, const char *name)
 		wl_output_destroy(wl_output);
 }
 
+static void
+output_handle_mode(void *data, struct wl_output *wl_output, uint32_t flags,
+                   int32_t width, int32_t height, int32_t refresh)
+{
+	if (flags & WL_OUTPUT_MODE_CURRENT) {
+		out_w = width;
+		out_h = height;
+	}
+}
+
 static const struct wl_output_listener output_listener = {
 	.geometry = noop,
-	.mode = noop,
+	.mode = output_handle_mode,
 	.done = noop,
 	.scale = noop,
 	.name = output_handle_name,
@@ -999,10 +1025,18 @@ setup(void)
 
 	layer_surface = zwlr_layer_shell_v1_get_layer_surface(layer_shell,
 				surface, output, ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY, "mew");
-	zwlr_layer_surface_v1_set_size(layer_surface, 0, mh);
-	zwlr_layer_surface_v1_set_anchor(layer_surface,
-		(top ? ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP : ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM ) |
-		ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT);
+	if (centered == 1) {
+		promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
+		mw = MIN(MAX(max_textw() + promptw, min_width * scale), out_w);
+		zwlr_layer_surface_v1_set_size(layer_surface, mw - 1, mh);
+		zwlr_layer_surface_v1_set_margin(layer_surface, (out_h - mh) / menu_height_ratio, 0, 0, 0);
+		zwlr_layer_surface_v1_set_anchor(layer_surface, ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP);
+	} else {
+		zwlr_layer_surface_v1_set_size(layer_surface, 0, mh);
+		zwlr_layer_surface_v1_set_anchor(layer_surface,
+			(top ? ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP : ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM ) |
+			ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT);
+	}
 	zwlr_layer_surface_v1_set_exclusive_zone(layer_surface, -1);
 	zwlr_layer_surface_v1_set_keyboard_interactivity(layer_surface, 1);
 	zwlr_layer_surface_v1_add_listener(layer_surface, &layer_surface_listener, NULL);
@@ -1013,7 +1047,7 @@ setup(void)
 static void
 usage(void)
 {
-	die("usage: mew [-beivP] [-l lines] [-p prompt] [-f font] [-o output]\n"
+	die("usage: mew [-beivcP] [-l lines] [-p prompt] [-f font] [-o output]\n"
 	    "           [-nb color] [-nf color] [-sb color] [-sf color]");
 }
 
@@ -1036,6 +1070,8 @@ main(int argc, char *argv[])
 			fstrstr = cistrstr;
 		} else if (!strcmp(argv[i], "-P"))   /* is the input a password */
 			passwd = 1;
+		else if (!strcmp(argv[i], "-c"))
+			centered = 1;
 		else if (i + 1 == argc)
 			usage();
 		else if (!strcmp(argv[i], "-l"))