basic split containers

sway/tree/layout.c

@@ -1,4 +1,5 @@
 #define _POSIX_C_SOURCE 200809L
+#include <assert.h>
 #include <ctype.h>
 #include <math.h>
 #include <stdbool.h>
@@ -100,6 +101,8 @@ void container_add_child(struct sway_container *parent,
 			parent, parent->type, parent->width, parent->height);
 	list_add(parent->children, child);
 	child->parent = parent;
+	// TODO: set focus for this container?
+	sway_input_manager_set_focus(input_manager, child);
 }
 
 struct sway_container *container_reap_empty(struct sway_container *container) {
@@ -135,7 +138,7 @@ struct sway_container *container_remove_child(struct sway_container *child) {
 		}
 	}
 	child->parent = NULL;
-	return container_reap_empty(parent);
+	return parent;
 }
 
 void container_move_to(struct sway_container* container,
@@ -322,7 +325,12 @@ static void apply_horiz_layout(struct sway_container *container,
 			wlr_log(L_DEBUG,
 				"Calculating arrangement for %p:%d (will scale %f by %f)",
 				child, child->type, width, scale);
-			view_set_position(child->sway_view, child_x, y);
+			if (child->type == C_VIEW) {
+				view_set_position(child->sway_view, child_x, y);
+			} else {
+				child->x = child_x;
+				child->y = y;
+			}
 
 			if (i == end - 1) {
 				double remaining_width = x + width - child_x;
@@ -505,9 +513,9 @@ static struct sway_container *sway_output_from_wlr(struct wlr_output *output) {
 	return NULL;
 }
 
-static struct sway_container *get_swayc_in_direction_under(
-		struct sway_container *container, enum movement_direction dir,
-		struct sway_seat *seat, struct sway_container *limit) {
+struct sway_container *container_get_in_direction(
+		struct sway_container *container, struct sway_seat *seat,
+		enum movement_direction dir) {
 	if (dir == MOVE_CHILD) {
 		return sway_seat_get_focus_inactive(seat, container);
 	}
@@ -559,7 +567,6 @@ static struct sway_container *get_swayc_in_direction_under(
 
 	struct sway_container *wrap_candidate = NULL;
 	while (true) {
-		// Test if we can even make a difference here
 		bool can_move = false;
 		int desired;
 		int idx = index_child(container);
@@ -589,7 +596,7 @@ static struct sway_container *get_swayc_in_direction_under(
 			}
 			if (next->children && next->children->length) {
 				// TODO consider floating children as well
-				return sway_seat_get_focus_inactive(seat, next);
+				return sway_seat_get_focus_by_type(seat, next, C_VIEW);
 			} else {
 				return next;
 			}
@@ -619,21 +626,22 @@ static struct sway_container *get_swayc_in_direction_under(
 						wrap_candidate = parent->children->items[0];
 					}
 					if (config->force_focus_wrapping) {
-						return wrap_candidate;
+						 return sway_seat_get_focus_by_type(seat, wrap_candidate, C_VIEW);
 					}
 				}
 			} else {
 				wlr_log(L_DEBUG,
 					"cont %d-%p dir %i sibling %d: %p", idx,
 					container, dir, desired, parent->children->items[desired]);
-				return parent->children->items[desired];
+				return sway_seat_get_focus_by_type(seat,
+						parent->children->items[desired], C_VIEW);
 			}
 		}
 
 		if (!can_move) {
 			container = parent;
 			parent = parent->parent;
-			if (!parent || container == limit) {
+			if (!parent) {
 				// wrapping is the last chance
 				return wrap_candidate;
 			}
@@ -641,8 +649,71 @@ static struct sway_container *get_swayc_in_direction_under(
 	}
 }
 
-struct sway_container *container_get_in_direction(
-		struct sway_container *container, struct sway_seat *seat,
-		enum movement_direction dir) {
-	return get_swayc_in_direction_under(container, dir, seat, NULL);
+struct sway_container *container_replace_child(struct sway_container *child,
+		struct sway_container *new_child) {
+	struct sway_container *parent = child->parent;
+	if (parent == NULL) {
+		return NULL;
+	}
+	int i = index_child(child);
+
+	// TODO floating
+	parent->children->items[i] = new_child;
+	new_child->parent = parent;
+	child->parent = NULL;
+
+	// Set geometry for new child
+	new_child->x = child->x;
+	new_child->y = child->y;
+	new_child->width = child->width;
+	new_child->height = child->height;
+
+	// reset geometry for child
+	child->width = 0;
+	child->height = 0;
+
+	return parent;
+}
+
+struct sway_container *container_split(struct sway_container *child,
+		enum sway_container_layout layout) {
+	// TODO floating: cannot split a floating container
+	if (!sway_assert(child, "child cannot be null")) {
+		return NULL;
+	}
+	struct sway_container *cont = container_create(C_CONTAINER);
+
+	wlr_log(L_DEBUG, "creating container %p around %p", cont, child);
+
+	cont->prev_layout = L_NONE;
+	cont->layout = layout;
+	cont->width = child->width;
+	cont->height = child->height;
+	cont->x = child->x;
+	cont->y = child->y;
+
+	/* Container inherits all of workspaces children, layout and whatnot */
+	if (child->type == C_WORKSPACE) {
+		struct sway_container *workspace = child;
+		// reorder focus
+		int i;
+		for (i = 0; i < workspace->children->length; ++i) {
+			((struct sway_container *)workspace->children->items[i])->parent =
+				cont;
+		}
+
+		// Swap children
+		list_t  *tmp_list  = workspace->children;
+		workspace->children = cont->children;
+		cont->children = tmp_list;
+		// add container to workspace chidren
+		container_add_child(workspace, cont);
+		// give them proper layouts
+		cont->layout = workspace->workspace_layout;
+		cont->prev_layout = workspace->prev_layout;
+	} else { // Or is built around container
+		container_replace_child(child, cont);
+		container_add_child(cont, child);
+	}
+	return cont;
 }