feat: support resize scroller stack

src/layout/arrange.h

@@ -378,6 +378,7 @@ void resize_tile_scroller(Client *grabc, bool isdrag, int32_t offsetx,
 						  int32_t offsety, uint32_t time, bool isvertical) {
 	float delta_x, delta_y;
 	float new_scroller_proportion;
+	float new_stack_proportion;
 
 	if (grabc && grabc->mon->visible_tiling_clients == 1 &&
 		!scroller_ignore_proportion_single)
@@ -390,6 +391,7 @@ void resize_tile_scroller(Client *grabc, bool isdrag, int32_t offsetx,
 
 		// 记录初始状态
 		grabc->old_scroller_pproportion = grabc->scroller_proportion;
+		grabc->old_stack_proportion = grabc->stack_proportion;
 
 		grabc->cursor_in_left_half =
 			cursor->x < grabc->geom.x + grabc->geom.width / 2;
@@ -410,14 +412,22 @@ void resize_tile_scroller(Client *grabc, bool isdrag, int32_t offsetx,
 			grabc->old_stack_inner_per = grabc->stack_inner_per;
 			grabc->drag_begin_geom = grabc->geom;
 			grabc->old_scroller_pproportion = grabc->scroller_proportion;
+			grabc->old_stack_proportion = grabc->stack_proportion;
 			grabc->cursor_in_upper_half = false;
 			grabc->cursor_in_left_half = false;
 		}
 
-		delta_x = (float)(offsetx) * (grabc->old_scroller_pproportion) /
+		if (isvertical) {
-				  grabc->drag_begin_geom.width;
+			delta_y = (float)(offsety) * (grabc->old_scroller_pproportion) /
-		delta_y = (float)(offsety) * (grabc->old_scroller_pproportion) /
+					  grabc->drag_begin_geom.height;
-				  grabc->drag_begin_geom.height;
+			delta_x = (float)(offsetx) * (grabc->old_stack_proportion) /
+					  grabc->drag_begin_geom.width;
+		} else {
+			delta_x = (float)(offsetx) * (grabc->old_scroller_pproportion) /
+					  grabc->drag_begin_geom.width;
+			delta_y = (float)(offsety) * (grabc->old_stack_proportion) /
+					  grabc->drag_begin_geom.height;
+		}
 
 		bool moving_up;
 		bool moving_down;
@@ -452,20 +462,36 @@ void resize_tile_scroller(Client *grabc, bool isdrag, int32_t offsetx,
 			delta_x = -fabsf(delta_x);
 		}
 
+		if (isvertical) {
+			if (!grabc->next_in_stack && grabc->prev_in_stack && !isdrag) {
+				delta_x = delta_x * -1.0f;
+			}
+		} else {
+			if (!grabc->next_in_stack && grabc->prev_in_stack && !isdrag) {
+				delta_y = delta_y * -1.0f;
+			}
+		}
+
 		// 直接设置新的比例，基于初始值 + 变化量
 		if (isvertical) {
 			new_scroller_proportion = grabc->old_scroller_pproportion + delta_y;
+			new_stack_proportion = grabc->old_stack_proportion + delta_x;
+
 		} else {
 			new_scroller_proportion = grabc->old_scroller_pproportion + delta_x;
+			new_stack_proportion = grabc->old_stack_proportion + delta_y;
 		}
 
 		// 应用限制，确保比例在合理范围内
 		new_scroller_proportion =
 			fmaxf(0.1f, fminf(1.0f, new_scroller_proportion));
+		new_stack_proportion = fmaxf(0.1f, fminf(1.0f, new_stack_proportion));
 
 		grabc->scroller_proportion = new_scroller_proportion;
-		if(grabc->prev_in_stack) {
+		grabc->stack_proportion = new_stack_proportion;
-			grabc->prev_in_stack->scroller_proportion = grabc->scroller_proportion;
+		if (grabc->prev_in_stack) {
+			grabc->prev_in_stack->scroller_proportion =
+				grabc->scroller_proportion;
 		}
 
 		if (!isdrag) {

src/layout/horizontal.h

@@ -227,8 +227,9 @@ void arrange_stack(Client *scroller_stack_head, struct wlr_box geometry,
 	float total_proportion = 0.0f;
 	iter = scroller_stack_head;
 	while (iter) {
-		if(iter->stack_proportion <= 0.0f || iter->stack_proportion >= 1.0f) {
+		if (iter->stack_proportion <= 0.0f || iter->stack_proportion >= 1.0f) {
-			iter->stack_proportion = stack_size == 1 ? 1.0f : 1.0f/(stack_size - 1);
+			iter->stack_proportion =
+				stack_size == 1 ? 1.0f : 1.0f / (stack_size - 1);
 		}
 		total_proportion += iter->stack_proportion;
 		iter = iter->next_in_stack;
@@ -248,7 +249,8 @@ void arrange_stack(Client *scroller_stack_head, struct wlr_box geometry,
 	iter = scroller_stack_head;
 	while (iter) {
 
-		client_height = remain_client_height * (iter->stack_proportion / remain_proportion);
+		client_height =
+			remain_client_height * (iter->stack_proportion / remain_proportion);
 
 		struct wlr_box client_geom = {.x = geometry.x,
 									  .y = current_y,

src/layout/vertical.h

@@ -199,8 +199,8 @@ void vertical_scroll_adjust_fullandmax(Client *c, struct wlr_box *target_geom) {
 	target_geom->x = m->w.x + (m->w.width - target_geom->width) / 2;
 }
 
-void arrange_stack_vertical(Client *scroller_stack_head, struct wlr_box geometry,
+void arrange_stack_vertical(Client *scroller_stack_head,
-				   int32_t gappih) {
+							struct wlr_box geometry, int32_t gappih) {
 	int32_t stack_size = 0;
 	Client *iter = scroller_stack_head;
 	while (iter) {
@@ -214,8 +214,9 @@ void arrange_stack_vertical(Client *scroller_stack_head, struct wlr_box geometry
 	float total_proportion = 0.0f;
 	iter = scroller_stack_head;
 	while (iter) {
-		if(iter->stack_proportion <= 0.0f || iter->stack_proportion >= 1.0f) {
+		if (iter->stack_proportion <= 0.0f || iter->stack_proportion >= 1.0f) {
-			iter->stack_proportion = stack_size == 1 ? 1.0f : 1.0f/(stack_size - 1);
+			iter->stack_proportion =
+				stack_size == 1 ? 1.0f : 1.0f / (stack_size - 1);
 		}
 		total_proportion += iter->stack_proportion;
 		iter = iter->next_in_stack;
@@ -235,7 +236,8 @@ void arrange_stack_vertical(Client *scroller_stack_head, struct wlr_box geometry
 	iter = scroller_stack_head;
 	while (iter) {
 
-		client_width = remain_client_width * (iter->stack_proportion / remain_proportion);
+		client_width =
+			remain_client_width * (iter->stack_proportion / remain_proportion);
 
 		struct wlr_box client_geom = {.y = geometry.y,
 									  .x = current_x,

src/mango.c

@@ -376,6 +376,7 @@ struct Client {
 	bool is_restoring_from_ov;
 	float scroller_proportion;
 	float stack_proportion;
+	float old_stack_proportion;
 	bool need_output_flush;
 	struct dwl_animation animation;
 	struct dwl_opacity_animation opacity_animation;