From f535332ee8e416ca711742e14366c3211974394e Mon Sep 17 00:00:00 2001
From: ernestoCruz05 <a2023144672@isec.pt>
Date: Sat, 9 May 2026 12:14:57 +0100
Subject: [PATCH] feat: opt-in config field to have typical dwindle tiling

---
 src/animation/client.h    | 39 +++++++++++++++++++++++++++++++++++++++
 src/config/parse_config.h |  5 +++++
 src/mango.c               |  2 +-
 3 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/src/animation/client.h b/src/animation/client.h
index 9108c98c..97f0d6cd 100644
--- a/src/animation/client.h
+++ b/src/animation/client.h
@@ -538,6 +538,11 @@ void client_set_drop_area(Client *c) {
 
 	struct wlr_box drop_box;
 
+	const Layout *cur_layout =
+		c->mon ? c->mon->pertag->ltidxs[c->mon->pertag->curtag] : NULL;
+	bool dwindle_familiar =
+		cur_layout && cur_layout->id == DWINDLE && !config.dwindle_smart_drop;
+
 	// 中心区域：x和y都在30%~70%之间 → 无方向
 	if (rel_x > client_width * 0.3 && rel_x < client_width * 0.7 &&
 		rel_y > client_height * 0.3 && rel_y < client_height * 0.7) {
@@ -546,6 +551,40 @@ void client_set_drop_area(Client *c) {
 		drop_box.width = client_width * 0.4;
 		drop_box.height = client_height * 0.4;
 		drop_direction = UNDIR;
+	} else if (dwindle_familiar) {
+		// Mirror dwindle_assign's split_h = (aw >= ah) rule so the preview
+		// matches the auto-rotated split that dwindle will produce.
+		bool split_h = c->geom.width >= c->geom.height;
+		float ratio = config.dwindle_split_ratio;
+		if (split_h) {
+			if (rel_x < client_width * 0.5) {
+				drop_direction = LEFT;
+				drop_box.x = bw;
+				drop_box.y = bw;
+				drop_box.width = (int32_t)(client_width * ratio);
+				drop_box.height = client_height;
+			} else {
+				drop_direction = RIGHT;
+				drop_box.x = bw + (int32_t)(client_width * ratio);
+				drop_box.y = bw;
+				drop_box.width = client_width - (int32_t)(client_width * ratio);
+				drop_box.height = client_height;
+			}
+		} else {
+			if (rel_y < client_height * 0.5) {
+				drop_direction = UP;
+				drop_box.x = bw;
+				drop_box.y = bw;
+				drop_box.width = client_width;
+				drop_box.height = (int32_t)(client_height * ratio);
+			} else {
+				drop_direction = DOWN;
+				drop_box.x = bw;
+				drop_box.y = bw + (int32_t)(client_height * ratio);
+				drop_box.width = client_width;
+				drop_box.height = client_height - (int32_t)(client_height * ratio);
+			}
+		}
 	} else {
 		// 否则根据到各边的距离决定方向
 		double dist_left = rel_x;
diff --git a/src/config/parse_config.h b/src/config/parse_config.h
index 207d06f7..8d4300b6 100644
--- a/src/config/parse_config.h
+++ b/src/config/parse_config.h
@@ -248,6 +248,7 @@ typedef struct {
 	int32_t dwindle_preserve_split;
 	int32_t dwindle_smart_split;
 	int32_t dwindle_smart_resize;
+	int32_t dwindle_smart_drop;
 	float dwindle_split_ratio;
 
 	uint32_t hotarea_size;
@@ -1633,6 +1634,8 @@ bool parse_option(Config *config, char *key, char *value) {
 		config->dwindle_smart_split = atoi(value);
 	} else if (strcmp(key, "dwindle_smart_resize") == 0) {
 		config->dwindle_smart_resize = atoi(value);
+	} else if (strcmp(key, "dwindle_smart_drop") == 0) {
+		config->dwindle_smart_drop = atoi(value);
 	} else if (strcmp(key, "dwindle_split_ratio") == 0) {
 		config->dwindle_split_ratio = atof(value);
 	} else if (strcmp(key, "hotarea_size") == 0) {
@@ -3205,6 +3208,7 @@ void override_config(void) {
 		CLAMP_INT(config.dwindle_preserve_split, 0, 1);
 	config.dwindle_smart_split = CLAMP_INT(config.dwindle_smart_split, 0, 1);
 	config.dwindle_smart_resize = CLAMP_INT(config.dwindle_smart_resize, 0, 1);
+	config.dwindle_smart_drop = CLAMP_INT(config.dwindle_smart_drop, 0, 1);
 	config.dwindle_split_ratio =
 		CLAMP_FLOAT(config.dwindle_split_ratio, 0.05f, 0.95f);
 	config.hotarea_size = CLAMP_INT(config.hotarea_size, 1, 1000);
@@ -3351,6 +3355,7 @@ void set_value_default() {
 	config.dwindle_preserve_split = 0;
 	config.dwindle_smart_split = 0;
 	config.dwindle_smart_resize = 0;
+	config.dwindle_smart_drop = 1;
 	config.dwindle_split_ratio = 0.5f;
 
 	config.log_level = WLR_ERROR;
diff --git a/src/mango.c b/src/mango.c
index 17b99dca..d518fbbf 100644
--- a/src/mango.c
+++ b/src/mango.c
@@ -2229,7 +2229,7 @@ void place_drag_tile_client(Client *c) {
 							closest->drop_direction == RIGHT);
 			dwindle_insert(&c->mon->pertag->dwindle_root[tag], c, closest,
 						   config.dwindle_split_ratio, insert_before, split_h,
-						   true);
+						   config.dwindle_smart_drop);
 			setfloating(c, 0);
 			return;
 		}