From c417daa0a075164e1216bc5a6ee9b5cde990dff7 Mon Sep 17 00:00:00 2001
From: finbargiusti <finbargiusti@gmail.com>
Date: Tue, 8 Jul 2025 19:36:19 +0100
Subject: [PATCH] add center flag

---
 menu.c    |  9 ++++++---
 menu.h    | 10 +++++++++-
 wayland.c | 17 +++++++++++++----
 3 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/menu.c b/menu.c
index 207d71c..b4385a7 100644
--- a/menu.c
+++ b/menu.c
@@ -85,14 +85,17 @@ static bool parse_color(const char *color, uint32_t *result) {
 // Parse menu options from command line arguments.
 void menu_getopts(struct menu *menu, int argc, char *argv[]) {
 	const char *usage =
-		"Usage: wmenu [-biPv] [-f font] [-l lines] [-o output] [-p prompt]\n"
+		"Usage: wmenu [-bciPv] [-f font] [-l lines] [-o output] [-p prompt]\n"
 		"\t[-N color] [-n color] [-M color] [-m color] [-S color] [-s color]\n";
 
 	int opt;
-	while ((opt = getopt(argc, argv, "bhiPvf:l:o:p:N:n:M:m:S:s:")) != -1) {
+	while ((opt = getopt(argc, argv, "bchiPvf:l:o:p:N:n:M:m:S:s:")) != -1) {
 		switch (opt) {
 		case 'b':
-			menu->bottom = true;
+			menu->position = POSITION_BOTTOM;
+			break;
+		case 'c':
+			menu->position = POSITION_CENTER;
 			break;
 		case 'i':
 			menu->strncmp = strncasecmp;
diff --git a/menu.h b/menu.h
index fdd9ad2..d1691a0 100644
--- a/menu.h
+++ b/menu.h
@@ -27,10 +27,18 @@ struct page {
 	struct page *next;  // next page
 };
 
+enum e_position {
+	POSITION_TOP,
+	POSITION_BOTTOM,
+	POSITION_CENTER,
+};
+
+typedef enum e_position POSITION;
+
 // Menu state.
 struct menu {
 	// Whether the menu appears at the bottom of the screen
-	bool bottom;
+	POSITION position;
 	// The function used to match menu items
 	int (*strncmp)(const char *, const char *, size_t);
 	// Whether the input is a password
diff --git a/wayland.c b/wayland.c
index 823ced1..5db52f4 100644
--- a/wayland.c
+++ b/wayland.c
@@ -448,10 +448,19 @@ int menu_run(struct menu *menu) {
 
 	uint32_t anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
 		ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
-	if (menu->bottom) {
-		anchor |= ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
-	} else {
-		anchor |= ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
+
+	switch (menu->position) {
+
+		case POSITION_BOTTOM:
+			anchor |= ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+			break;
+		case POSITION_TOP: 
+			anchor |= ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
+			break;
+		case POSITION_CENTER:
+			anchor |= ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP | ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+			// we will handle this in rendering.
+			break;
 	}
 
 	zwlr_layer_surface_v1_set_anchor(layer_surface, anchor);