swayfx/sway/tree/layout.c
2018-04-07 18:01:18 -04:00

1031 lines
30 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <ctype.h>
#include <math.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
#include "sway/debug.h"
#include "sway/tree/container.h"
#include "sway/tree/layout.h"
#include "sway/output.h"
#include "sway/tree/workspace.h"
#include "sway/tree/view.h"
#include "sway/input/seat.h"
#include "sway/ipc-server.h"
#include "list.h"
#include "log.h"
struct sway_container root_container;
static void output_layout_handle_change(struct wl_listener *listener,
void *data) {
struct wlr_output_layout *output_layout =
root_container.sway_root->output_layout;
const struct wlr_box *layout_box =
wlr_output_layout_get_box(output_layout, NULL);
root_container.x = layout_box->x;
root_container.y = layout_box->y;
root_container.width = layout_box->width;
root_container.height = layout_box->height;
arrange_windows(&root_container, layout_box->width, layout_box->height);
}
struct sway_container *container_set_layout(struct sway_container *container,
enum sway_container_layout layout) {
if (container->type == C_WORKSPACE) {
container->workspace_layout = layout;
if (layout == L_HORIZ || layout == L_VERT) {
container->layout = layout;
}
} else {
container->layout = layout;
}
return container;
}
void layout_init(void) {
root_container.id = 0; // normally assigned in new_swayc()
root_container.type = C_ROOT;
root_container.layout = L_NONE;
root_container.name = strdup("root");
root_container.children = create_list();
wl_signal_init(&root_container.events.destroy);
root_container.sway_root = calloc(1, sizeof(*root_container.sway_root));
root_container.sway_root->output_layout = wlr_output_layout_create();
wl_list_init(&root_container.sway_root->xwayland_unmanaged);
wl_signal_init(&root_container.sway_root->events.new_container);
root_container.sway_root->output_layout_change.notify =
output_layout_handle_change;
wl_signal_add(&root_container.sway_root->output_layout->events.change,
&root_container.sway_root->output_layout_change);
}
static int index_child(const struct sway_container *child) {
// TODO handle floating
struct sway_container *parent = child->parent;
int i, len;
len = parent->children->length;
for (i = 0; i < len; ++i) {
if (parent->children->items[i] == child) {
break;
}
}
if (!sway_assert(i < len, "Stray container")) {
return -1;
}
return i;
}
void container_insert_child(struct sway_container *parent,
struct sway_container *child, int i) {
struct sway_container *old_parent = child->parent;
if (old_parent) {
container_remove_child(child);
}
wlr_log(L_DEBUG, "Inserting id:%zd at index %d", child->id, i);
list_insert(parent->children, i, child);
child->parent = parent;
wl_signal_emit(&child->events.reparent, old_parent);
}
struct sway_container *container_add_sibling(struct sway_container *fixed,
struct sway_container *active) {
// TODO handle floating
struct sway_container *old_parent = NULL;
if (active->parent) {
old_parent = active->parent;
container_remove_child(active);
}
struct sway_container *parent = fixed->parent;
int i = index_child(fixed);
list_insert(parent->children, i + 1, active);
active->parent = parent;
wl_signal_emit(&active->events.reparent, old_parent);
return active->parent;
}
void container_add_child(struct sway_container *parent,
struct sway_container *child) {
wlr_log(L_DEBUG, "Adding %p (%d, %fx%f) to %p (%d, %fx%f)",
child, child->type, child->width, child->height,
parent, parent->type, parent->width, parent->height);
list_add(parent->children, child);
child->parent = parent;
}
struct sway_container *container_remove_child(struct sway_container *child) {
struct sway_container *parent = child->parent;
for (int i = 0; i < parent->children->length; ++i) {
if (parent->children->items[i] == child) {
list_del(parent->children, i);
break;
}
}
child->parent = NULL;
return parent;
}
void container_move_to(struct sway_container *container,
struct sway_container *destination) {
if (container == destination
|| container_has_anscestor(container, destination)) {
return;
}
struct sway_container *old_parent = container_remove_child(container);
container->width = container->height = 0;
struct sway_container *new_parent;
if (destination->type == C_VIEW) {
new_parent = container_add_sibling(destination, container);
} else {
new_parent = destination;
container_add_child(destination, container);
}
wl_signal_emit(&container->events.reparent, old_parent);
if (container->type == C_WORKSPACE) {
struct sway_seat *seat = input_manager_get_default_seat(
input_manager);
if (old_parent->children->length == 0) {
char *ws_name = workspace_next_name(old_parent->name);
struct sway_container *ws =
workspace_create(old_parent, ws_name);
free(ws_name);
seat_set_focus(seat, ws);
}
container_sort_workspaces(new_parent);
seat_set_focus(seat, new_parent);
}
if (old_parent) {
arrange_windows(old_parent, -1, -1);
}
arrange_windows(new_parent, -1, -1);
}
static bool sway_dir_to_wlr(enum movement_direction dir,
enum wlr_direction *out) {
switch (dir) {
case MOVE_UP:
*out = WLR_DIRECTION_UP;
break;
case MOVE_DOWN:
*out = WLR_DIRECTION_DOWN;
break;
case MOVE_LEFT:
*out = WLR_DIRECTION_LEFT;
break;
case MOVE_RIGHT:
*out = WLR_DIRECTION_RIGHT;
break;
default:
return false;
}
return true;
}
static bool is_parallel(enum sway_container_layout layout,
enum movement_direction dir) {
switch (layout) {
case L_TABBED:
case L_STACKED:
case L_HORIZ:
return dir == MOVE_LEFT || dir == MOVE_RIGHT;
case L_VERT:
return dir == MOVE_UP || dir == MOVE_DOWN;
default:
return false;
}
}
static enum movement_direction invert_movement(enum movement_direction dir) {
switch (dir) {
case MOVE_LEFT:
return MOVE_RIGHT;
case MOVE_RIGHT:
return MOVE_LEFT;
case MOVE_UP:
return MOVE_DOWN;
case MOVE_DOWN:
return MOVE_UP;
default:
sway_assert(0, "This function expects left|right|up|down");
return MOVE_LEFT;
}
}
static int move_offs(enum movement_direction move_dir) {
return move_dir == MOVE_LEFT || move_dir == MOVE_UP ? -1 : 1;
}
/* Gets the index of the most extreme member based on the movement offset */
static int container_limit(struct sway_container *container,
enum movement_direction move_dir) {
return move_offs(move_dir) < 0 ? 0 : container->children->length;
}
/* Takes one child, sets it aside, wraps the rest of the children in a new
* container, switches the layout of the workspace, and drops the child back in.
* In other words, rejigger it. */
static void workspace_rejigger(struct sway_container *ws,
struct sway_container *child, enum movement_direction move_dir) {
struct sway_container *original_parent = child->parent;
struct sway_container *new_parent =
container_split(ws, ws->layout);
container_remove_child(child);
for (int i = 0; i < ws->children->length; ++i) {
struct sway_container *_child = ws->children->items[i];
container_move_to(new_parent, _child);
}
int index = move_offs(move_dir);
container_insert_child(ws, child, index < 0 ? 0 : 1);
container_set_layout(ws,
move_dir == MOVE_LEFT || move_dir == MOVE_RIGHT ? L_HORIZ : L_VERT);
container_flatten(ws);
container_reap_empty_recursive(original_parent);
wl_signal_emit(&child->events.reparent, original_parent);
container_create_notify(new_parent);
arrange_windows(ws, -1, -1);
}
void container_move(struct sway_container *container,
enum movement_direction move_dir, int move_amt) {
if (!sway_assert(
container->type != C_CONTAINER || container->type != C_VIEW,
"Can only move containers and views")) {
return;
}
int offs = move_offs(move_dir);
struct sway_container *sibling = NULL;
struct sway_container *current = container;
struct sway_container *parent = current->parent;
if (parent != container_flatten(parent)) {
// Special case: we were the last one in this container, so flatten it
// and leave
update_debug_tree();
return;
}
while (!sibling) {
if (current->type == C_ROOT) {
return;
}
parent = current->parent;
wlr_log(L_DEBUG, "Visiting %p %s '%s'", current,
container_type_to_str(current->type), current->name);
int index = index_child(current);
switch (current->type) {
case C_OUTPUT: {
enum wlr_direction wlr_dir;
sway_dir_to_wlr(move_dir, &wlr_dir);
double ref_lx = current->x + current->width / 2;
double ref_ly = current->y + current->height / 2;
struct wlr_output *next = wlr_output_layout_adjacent_output(
root_container.sway_root->output_layout, wlr_dir,
current->sway_output->wlr_output, ref_lx, ref_ly);
if (!next) {
wlr_log(L_DEBUG, "Hit edge of output, nowhere else to go");
return;
}
struct sway_output *next_output = next->data;
current = next_output->swayc;
wlr_log(L_DEBUG, "Selected next output (%s)", current->name);
// Select workspace and get outta here
current = seat_get_focus_inactive(
config->handler_context.seat, current);
if (current->type != C_WORKSPACE) {
current = container_parent(current, C_WORKSPACE);
}
sibling = current;
break;
}
case C_WORKSPACE:
if (!is_parallel(current->layout, move_dir)) {
if (current->children->length > 2) {
wlr_log(L_DEBUG, "Rejiggering the workspace (%d kiddos)",
current->children->length);
workspace_rejigger(current, container, move_dir);
} else if (current->children->length == 2) {
wlr_log(L_DEBUG, "Changing workspace layout");
container_set_layout(current,
move_dir == MOVE_LEFT || move_dir == MOVE_RIGHT ?
L_HORIZ : L_VERT);
container_insert_child(current, container, offs < 0 ? 0 : 1);
arrange_windows(current, -1, -1);
}
return;
} else {
wlr_log(L_DEBUG, "Selecting output");
current = current->parent;
}
break;
case C_CONTAINER:
case C_VIEW:
if (is_parallel(parent->layout, move_dir)) {
if ((index == parent->children->length - 1 && offs > 0)
|| (index == 0 && offs < 0)) {
if (current->parent == container->parent) {
wlr_log(L_DEBUG, "Hit limit, selecting parent");
current = current->parent;
} else {
wlr_log(L_DEBUG, "Hit limit, "
"promoting descendant to sibling");
// Special case
struct sway_container *old_parent = container->parent;
container_insert_child(current->parent, container,
index + (offs < 0 ? 0 : 1));
container->width = container->height = 0;
arrange_windows(current->parent, -1, -1);
arrange_windows(old_parent, -1, -1);
return;
}
} else {
sibling = parent->children->items[index + offs];
wlr_log(L_DEBUG, "Selecting sibling id:%zd", sibling->id);
}
} else {
wlr_log(L_DEBUG, "Moving up to find a parallel container");
current = current->parent;
}
break;
default:
sway_assert(0, "Not expecting to see container of type %s here",
container_type_to_str(current->type));
return;
}
}
// Part two: move stuff around
int index = index_child(container);
struct sway_container *old_parent = container->parent;
while (sibling) {
switch (sibling->type) {
case C_VIEW:
if (sibling->parent == container->parent) {
wlr_log(L_DEBUG, "Swapping siblings");
sibling->parent->children->items[index + offs] = container;
sibling->parent->children->items[index] = sibling;
arrange_windows(sibling->parent, -1, -1);
} else {
wlr_log(L_DEBUG, "Promoting to sibling of cousin");
container_insert_child(sibling->parent, container,
index_child(sibling) + (offs > 0 ? 0 : 1));
container->width = container->height = 0;
arrange_windows(sibling->parent, -1, -1);
arrange_windows(old_parent, -1, -1);
}
sibling = NULL;
break;
case C_WORKSPACE: // Note: only in the case of moving between outputs
case C_CONTAINER:
if (is_parallel(sibling->layout, move_dir)) {
int limit = container_limit(sibling, invert_movement(move_dir));
wlr_log(L_DEBUG, "limit: %d", limit);
wlr_log(L_DEBUG,
"Reparenting container (parallel) to index %d "
"(move dir: %d)", limit, move_dir);
container_insert_child(sibling, container, limit);
container->width = container->height = 0;
arrange_windows(sibling, -1, -1);
arrange_windows(old_parent, -1, -1);
sibling = NULL;
} else {
wlr_log(L_DEBUG, "Reparenting container (perpendicular)");
container_remove_child(container);
struct sway_container *focus_inactive = seat_get_focus_inactive(
config->handler_context.seat, sibling);
if (focus_inactive) {
while (focus_inactive->parent != sibling) {
focus_inactive = focus_inactive->parent;
}
wlr_log(L_DEBUG, "Focus inactive: id:%zd",
focus_inactive->id);
sibling = focus_inactive;
continue;
} else if (sibling->children->length) {
wlr_log(L_DEBUG, "No focus-inactive, adding arbitrarily");
container_add_sibling(sibling->children->items[0], container);
} else {
wlr_log(L_DEBUG, "No kiddos, adding container alone");
container_add_child(sibling, container);
}
container->width = container->height = 0;
arrange_windows(sibling, -1, -1);
arrange_windows(old_parent, -1, -1);
sibling = NULL;
}
break;
default:
sway_assert(0, "Not expecting to see container of type %s here",
container_type_to_str(sibling->type));
return;
}
}
if (old_parent) {
seat_set_focus(config->handler_context.seat, old_parent);
seat_set_focus(config->handler_context.seat, container);
}
struct sway_container *last_ws = old_parent;
struct sway_container *next_ws = container->parent;
if (last_ws && last_ws->type != C_WORKSPACE) {
last_ws = container_parent(last_ws, C_WORKSPACE);
}
if (next_ws && next_ws->type != C_WORKSPACE) {
next_ws = container_parent(next_ws, C_WORKSPACE);
}
if (last_ws && next_ws && last_ws != next_ws) {
ipc_event_workspace(last_ws, container, "focus");
}
}
enum sway_container_layout container_get_default_layout(
struct sway_container *con) {
if (con->type != C_OUTPUT) {
con = container_parent(con, C_OUTPUT);
}
if (!sway_assert(con != NULL,
"container_get_default_layout must be called on an attached"
" container below the root container")) {
return 0;
}
if (config->default_layout != L_NONE) {
return config->default_layout;
} else if (config->default_orientation != L_NONE) {
return config->default_orientation;
} else if (con->width >= con->height) {
return L_HORIZ;
} else {
return L_VERT;
}
}
static int sort_workspace_cmp_qsort(const void *_a, const void *_b) {
struct sway_container *a = *(void **)_a;
struct sway_container *b = *(void **)_b;
int retval = 0;
if (isdigit(a->name[0]) && isdigit(b->name[0])) {
int a_num = strtol(a->name, NULL, 10);
int b_num = strtol(b->name, NULL, 10);
retval = (a_num < b_num) ? -1 : (a_num > b_num);
} else if (isdigit(a->name[0])) {
retval = -1;
} else if (isdigit(b->name[0])) {
retval = 1;
}
return retval;
}
void container_sort_workspaces(struct sway_container *output) {
list_stable_sort(output->children, sort_workspace_cmp_qsort);
}
static void apply_horiz_layout(struct sway_container *container, const double x,
const double y, const double width,
const double height, const int start,
const int end);
static void apply_vert_layout(struct sway_container *container, const double x,
const double y, const double width,
const double height, const int start,
const int end);
void arrange_windows(struct sway_container *container,
double width, double height) {
if (config->reloading) {
return;
}
int i;
if (width == -1 || height == -1) {
width = container->width;
height = container->height;
}
// pixels are indivisible. if we don't round the pixels, then the view
// calculations will be off (e.g. 50.5 + 50.5 = 101, but in reality it's
// 50 + 50 = 100). doing it here cascades properly to all width/height/x/y.
width = floor(width);
height = floor(height);
wlr_log(L_DEBUG, "Arranging layout for %p %s %fx%f+%f,%f", container,
container->name, container->width, container->height, container->x,
container->y);
double x = 0, y = 0;
switch (container->type) {
case C_ROOT:
for (i = 0; i < container->children->length; ++i) {
struct sway_container *output = container->children->items[i];
const struct wlr_box *output_box = wlr_output_layout_get_box(
container->sway_root->output_layout,
output->sway_output->wlr_output);
output->x = output_box->x;
output->y = output_box->y;
output->width = output_box->width;
output->height = output_box->height;
wlr_log(L_DEBUG, "Arranging output '%s' at %f,%f",
output->name, output->x, output->y);
arrange_windows(output, output_box->width, output_box->height);
}
return;
case C_OUTPUT:
// arrange all workspaces:
for (i = 0; i < container->children->length; ++i) {
struct sway_container *child = container->children->items[i];
arrange_windows(child, -1, -1);
}
return;
case C_WORKSPACE:
{
struct sway_container *output =
container_parent(container, C_OUTPUT);
struct wlr_box *area = &output->sway_output->usable_area;
wlr_log(L_DEBUG, "Usable area for ws: %dx%d@%d,%d",
area->width, area->height, area->x, area->y);
container->width = width = area->width;
container->height = height = area->height;
container->x = x = area->x;
container->y = y = area->y;
wlr_log(L_DEBUG, "Arranging workspace '%s' at %f, %f",
container->name, container->x, container->y);
}
// children are properly handled below
break;
case C_VIEW:
{
container->width = width;
container->height = height;
view_configure(container->sway_view, container->x, container->y,
container->width, container->height);
wlr_log(L_DEBUG, "Set view to %.f x %.f @ %.f, %.f",
container->width, container->height,
container->x, container->y);
}
return;
default:
container->width = width;
container->height = height;
x = container->x;
y = container->y;
break;
}
switch (container->layout) {
case L_HORIZ:
apply_horiz_layout(container, x, y, width, height, 0,
container->children->length);
break;
case L_VERT:
apply_vert_layout(container, x, y, width, height, 0,
container->children->length);
break;
default:
wlr_log(L_DEBUG, "TODO: arrange layout type %d", container->layout);
apply_horiz_layout(container, x, y, width, height, 0,
container->children->length);
break;
}
container_damage_whole(container);
// TODO: Make this less shitty
update_debug_tree();
}
static void apply_horiz_layout(struct sway_container *container,
const double x, const double y,
const double width, const double height,
const int start, const int end) {
double scale = 0;
// Calculate total width
for (int i = start; i < end; ++i) {
double *old_width =
&((struct sway_container *)container->children->items[i])->width;
if (*old_width <= 0) {
if (end - start > 1) {
*old_width = width / (end - start - 1);
} else {
*old_width = width;
}
}
scale += *old_width;
}
scale = width / scale;
// Resize windows
double child_x = x;
if (scale > 0.1) {
wlr_log(L_DEBUG, "Arranging %p horizontally", container);
for (int i = start; i < end; ++i) {
struct sway_container *child = container->children->items[i];
wlr_log(L_DEBUG,
"Calculating arrangement for %p:%d (will scale %f by %f)",
child, child->type, width, scale);
if (child->type == C_VIEW) {
view_configure(child->sway_view, child_x, y, child->width,
child->height);
} else {
child->x = child_x;
child->y = y;
}
if (i == end - 1) {
double remaining_width = x + width - child_x;
arrange_windows(child, remaining_width, height);
} else {
arrange_windows(child, child->width * scale, height);
}
child_x += child->width;
}
// update focused view border last because it may
// depend on the title bar geometry of its siblings.
/* TODO WLR
if (focused && container->children->length > 1) {
update_container_border(focused);
}
*/
}
}
void apply_vert_layout(struct sway_container *container,
const double x, const double y,
const double width, const double height, const int start,
const int end) {
int i;
double scale = 0;
// Calculate total height
for (i = start; i < end; ++i) {
double *old_height =
&((struct sway_container *)container->children->items[i])->height;
if (*old_height <= 0) {
if (end - start > 1) {
*old_height = height / (end - start - 1);
} else {
*old_height = height;
}
}
scale += *old_height;
}
scale = height / scale;
// Resize
double child_y = y;
if (scale > 0.1) {
wlr_log(L_DEBUG, "Arranging %p vertically", container);
for (i = start; i < end; ++i) {
struct sway_container *child = container->children->items[i];
wlr_log(L_DEBUG,
"Calculating arrangement for %p:%d (will scale %f by %f)",
child, child->type, height, scale);
if (child->type == C_VIEW) {
view_configure(child->sway_view, x, child_y, child->width,
child->height);
} else {
child->x = x;
child->y = child_y;
}
if (i == end - 1) {
double remaining_height = y + height - child_y;
arrange_windows(child, width, remaining_height);
} else {
arrange_windows(child, width, child->height * scale);
}
child_y += child->height;
}
// update focused view border last because it may
// depend on the title bar geometry of its siblings.
/* TODO WLR
if (focused && container->children->length > 1) {
update_container_border(focused);
}
*/
}
}
/**
* Get swayc in the direction of newly entered output.
*/
static struct sway_container *get_swayc_in_output_direction(
struct sway_container *output, enum movement_direction dir,
struct sway_seat *seat) {
if (!output) {
return NULL;
}
struct sway_container *ws = seat_get_focus_inactive(seat, output);
if (ws->type != C_WORKSPACE) {
ws = container_parent(ws, C_WORKSPACE);
}
if (ws == NULL) {
wlr_log(L_ERROR, "got an output without a workspace");
return NULL;
}
if (ws->children->length > 0) {
switch (dir) {
case MOVE_LEFT:
// get most right child of new output
return ws->children->items[ws->children->length-1];
case MOVE_RIGHT:
// get most left child of new output
return ws->children->items[0];
case MOVE_UP:
case MOVE_DOWN: {
struct sway_container *focused =
seat_get_focus_inactive(seat, ws);
if (focused && focused->parent) {
struct sway_container *parent = focused->parent;
if (parent->layout == L_VERT) {
if (dir == MOVE_UP) {
// get child furthest down on new output
int idx = parent->children->length - 1;
return parent->children->items[idx];
} else if (dir == MOVE_DOWN) {
// get child furthest up on new output
return parent->children->items[0];
}
}
return focused;
}
break;
}
default:
break;
}
}
return ws;
}
static void get_layout_center_position(struct sway_container *container,
int *x, int *y) {
// FIXME view coords are inconsistently referred to in layout/output systems
if (container->type == C_OUTPUT) {
*x = container->x + container->width/2;
*y = container->y + container->height/2;
} else {
struct sway_container *output = container_parent(container, C_OUTPUT);
if (container->type == C_WORKSPACE) {
// Workspace coordinates are actually wrong/arbitrary, but should
// be same as output.
*x = output->x;
*y = output->y;
} else {
*x = output->x + container->x;
*y = output->y + container->y;
}
}
}
static struct sway_container *sway_output_from_wlr(struct wlr_output *output) {
if (output == NULL) {
return NULL;
}
for (int i = 0; i < root_container.children->length; ++i) {
struct sway_container *o = root_container.children->items[i];
if (o->type == C_OUTPUT && o->sway_output->wlr_output == output) {
return o;
}
}
return NULL;
}
struct sway_container *container_get_in_direction(
struct sway_container *container, struct sway_seat *seat,
enum movement_direction dir) {
if (dir == MOVE_CHILD) {
return seat_get_focus_inactive(seat, container);
}
struct sway_container *parent = container->parent;
if (dir == MOVE_PARENT) {
if (parent->type == C_OUTPUT) {
return NULL;
} else {
return parent;
}
}
// TODO WLR fullscreen
/*
if (container->type == C_VIEW && swayc_is_fullscreen(container)) {
wlr_log(L_DEBUG, "Moving from fullscreen view, skipping to output");
container = container_parent(container, C_OUTPUT);
get_layout_center_position(container, &abs_pos);
struct sway_container *output =
swayc_adjacent_output(container, dir, &abs_pos, true);
return get_swayc_in_output_direction(output, dir);
}
if (container->type == C_WORKSPACE && container->fullscreen) {
sway_log(L_DEBUG, "Moving to fullscreen view");
return container->fullscreen;
}
*/
struct sway_container *wrap_candidate = NULL;
while (true) {
bool can_move = false;
int desired;
int idx = index_child(container);
if (parent->type == C_ROOT) {
enum wlr_direction wlr_dir = 0;
if (!sway_assert(sway_dir_to_wlr(dir, &wlr_dir),
"got invalid direction: %d", dir)) {
return NULL;
}
int lx, ly;
get_layout_center_position(container, &lx, &ly);
struct wlr_output_layout *layout =
root_container.sway_root->output_layout;
struct wlr_output *wlr_adjacent =
wlr_output_layout_adjacent_output(layout, wlr_dir,
container->sway_output->wlr_output, lx, ly);
struct sway_container *adjacent =
sway_output_from_wlr(wlr_adjacent);
if (!adjacent || adjacent == container) {
return wrap_candidate;
}
struct sway_container *next =
get_swayc_in_output_direction(adjacent, dir, seat);
if (next == NULL) {
return NULL;
}
if (next->children && next->children->length) {
// TODO consider floating children as well
return seat_get_focus_inactive_view(seat, next);
} else {
return next;
}
} else {
if (dir == MOVE_LEFT || dir == MOVE_RIGHT) {
if (parent->layout == L_HORIZ || parent->layout == L_TABBED) {
can_move = true;
desired = idx + (dir == MOVE_LEFT ? -1 : 1);
}
} else {
if (parent->layout == L_VERT || parent->layout == L_STACKED) {
can_move = true;
desired = idx + (dir == MOVE_UP ? -1 : 1);
}
}
}
if (can_move) {
// TODO handle floating
if (desired < 0 || desired >= parent->children->length) {
can_move = false;
int len = parent->children->length;
if (!wrap_candidate && len > 1) {
if (desired < 0) {
wrap_candidate = parent->children->items[len-1];
} else {
wrap_candidate = parent->children->items[0];
}
if (config->force_focus_wrapping) {
return wrap_candidate;
}
}
} else {
struct sway_container *desired_con = parent->children->items[desired];
wlr_log(L_DEBUG,
"cont %d-%p dir %i sibling %d: %p", idx,
container, dir, desired, desired_con);
struct sway_container *next = seat_get_focus_inactive_view(seat, desired_con);
return next;
}
}
if (!can_move) {
container = parent;
parent = parent->parent;
if (!parent) {
// wrapping is the last chance
return wrap_candidate;
}
}
}
}
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
if (new_child->parent) {
container_remove_child(new_child);
}
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;
}
if (child->type == C_WORKSPACE && child->children->length == 0) {
// Special case: this just behaves like splitt
child->prev_layout = child->layout;
child->layout = layout;
arrange_windows(child, -1, -1);
return child;
}
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->width = child->width;
cont->height = child->height;
cont->x = child->x;
cont->y = child->y;
if (child->type == C_WORKSPACE) {
struct sway_seat *seat = input_manager_get_default_seat(input_manager);
struct sway_container *workspace = child;
bool set_focus = (seat_get_focus(seat) == workspace);
while (workspace->children->length) {
struct sway_container *ws_child = workspace->children->items[0];
container_remove_child(ws_child);
container_add_child(cont, ws_child);
}
container_add_child(workspace, cont);
enum sway_container_layout old_layout = workspace->layout;
container_set_layout(workspace, layout);
cont->layout = old_layout;
if (set_focus) {
seat_set_focus(seat, cont);
}
} else {
cont->layout = layout;
container_replace_child(child, cont);
container_add_child(cont, child);
}
return cont;
}
void container_recursive_resize(struct sway_container *container,
double amount, enum resize_edge edge) {
bool layout_match = true;
wlr_log(L_DEBUG, "Resizing %p with amount: %f", container, amount);
if (edge == RESIZE_EDGE_LEFT || edge == RESIZE_EDGE_RIGHT) {
container->width += amount;
layout_match = container->layout == L_HORIZ;
} else if (edge == RESIZE_EDGE_TOP || edge == RESIZE_EDGE_BOTTOM) {
container->height += amount;
layout_match = container->layout == L_VERT;
}
if (container->children) {
for (int i = 0; i < container->children->length; i++) {
struct sway_container *child = container->children->items[i];
double amt = layout_match ?
amount / container->children->length : amount;
container_recursive_resize(child, amt, edge);
}
}
}