swayfx/sway/tree/output.c
Ryan Dwyer b6058703fa Refactor destroy functions and save workspaces when there's no outputs
This changes the destroy functions to the following:

* output_begin_destroy
* output_destroy
* workspace_begin_destroy
* workspace_destroy
* container_begin_destroy
* container_destroy
* view_begin_destroy
* view_destroy

The terminology was `destroy` and `free`, and it has been changed to
`begin_destroy` and `destroy` respectively.

When the last output is disconnected, its workspaces will now be stashed
in the root. Upon connection of a new output they will be restored.

There is a new function `workspace_consider_destroy` which decides
whether the given workspace should be destroyed or not (ie. empty and
not visible).

Calling container_begin_destroy will no longer automatically reap the
parents. In some places we want to reap the parents and in some we
don't, so this is left to the caller.

container_reap_empty_recursive and container_reap_empty have been
combined into one function and it will recurse up the tree.
2018-08-24 22:17:28 +10:00

282 lines
7.9 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <ctype.h>
#include <string.h>
#include <strings.h>
#include "sway/ipc-server.h"
#include "sway/output.h"
#include "sway/tree/arrange.h"
#include "sway/tree/output.h"
#include "sway/tree/workspace.h"
#include "log.h"
static void restore_workspaces(struct sway_container *output) {
// Workspace output priority
for (int i = 0; i < root_container.children->length; i++) {
struct sway_container *other = root_container.children->items[i];
if (other == output) {
continue;
}
for (int j = 0; j < other->children->length; j++) {
struct sway_container *ws = other->children->items[j];
struct sway_container *highest =
workspace_output_get_highest_available(ws, NULL);
if (highest == output) {
container_remove_child(ws);
container_add_child(output, ws);
ipc_event_workspace(NULL, ws, "move");
j--;
}
}
}
// Saved workspaces
list_t *saved = root_container.sway_root->saved_workspaces;
for (int i = 0; i < saved->length; ++i) {
struct sway_container *ws = saved->items[i];
container_add_child(output, ws);
ipc_event_workspace(NULL, ws, "move");
}
saved->length = 0;
output_sort_workspaces(output);
}
struct sway_container *output_create(
struct sway_output *sway_output) {
const char *name = sway_output->wlr_output->name;
char identifier[128];
output_get_identifier(identifier, sizeof(identifier), sway_output);
struct output_config *oc = NULL, *all = NULL;
for (int i = 0; i < config->output_configs->length; ++i) {
struct output_config *cur = config->output_configs->items[i];
if (strcasecmp(name, cur->name) == 0 ||
strcasecmp(identifier, cur->name) == 0) {
wlr_log(WLR_DEBUG, "Matched output config for %s", name);
oc = cur;
}
if (strcasecmp("*", cur->name) == 0) {
wlr_log(WLR_DEBUG, "Matched wildcard output config for %s", name);
all = cur;
}
if (oc && all) {
break;
}
}
if (!oc) {
oc = all;
}
if (oc && !oc->enabled) {
return NULL;
}
struct sway_container *output = container_create(C_OUTPUT);
output->sway_output = sway_output;
output->name = strdup(name);
if (output->name == NULL) {
output_begin_destroy(output);
return NULL;
}
apply_output_config(oc, output);
container_add_child(&root_container, output);
load_swaybars();
struct wlr_box size;
wlr_output_effective_resolution(sway_output->wlr_output, &size.width,
&size.height);
output->width = size.width;
output->height = size.height;
restore_workspaces(output);
if (!output->children->length) {
// Create workspace
char *ws_name = workspace_next_name(output->name);
wlr_log(WLR_DEBUG, "Creating default workspace %s", ws_name);
struct sway_container *ws = workspace_create(output, ws_name);
// Set each seat's focus if not already set
struct sway_seat *seat = NULL;
wl_list_for_each(seat, &input_manager->seats, link) {
if (!seat->has_focus) {
seat_set_focus(seat, ws);
}
}
free(ws_name);
}
container_create_notify(output);
return output;
}
static void output_evacuate(struct sway_container *output) {
if (!output->children->length) {
return;
}
struct sway_container *fallback_output = NULL;
if (root_container.children->length > 1) {
fallback_output = root_container.children->items[0];
if (fallback_output == output) {
fallback_output = root_container.children->items[1];
}
}
while (output->children->length) {
struct sway_container *workspace = output->children->items[0];
struct sway_container *new_output =
workspace_output_get_highest_available(workspace, output);
if (!new_output) {
new_output = fallback_output;
}
container_remove_child(workspace);
if (new_output) {
workspace_output_add_priority(workspace, new_output);
container_add_child(new_output, workspace);
output_sort_workspaces(new_output);
ipc_event_workspace(NULL, workspace, "move");
} else {
list_add(root_container.sway_root->saved_workspaces, workspace);
}
}
}
void output_destroy(struct sway_container *output) {
if (!sway_assert(output->type == C_OUTPUT, "Expected an output")) {
return;
}
if (!sway_assert(output->destroying,
"Tried to free output which wasn't marked as destroying")) {
return;
}
if (!sway_assert(output->ntxnrefs == 0, "Tried to free output "
"which is still referenced by transactions")) {
return;
}
free(output->name);
free(output->formatted_title);
wlr_texture_destroy(output->title_focused);
wlr_texture_destroy(output->title_focused_inactive);
wlr_texture_destroy(output->title_unfocused);
wlr_texture_destroy(output->title_urgent);
list_free(output->children);
list_free(output->current.children);
list_free(output->outputs);
free(output);
// NOTE: We don't actually destroy the sway_output here
}
static void untrack_output(struct sway_container *con, void *data) {
struct sway_output *output = data;
int index = list_find(con->outputs, output);
if (index != -1) {
list_del(con->outputs, index);
}
}
void output_begin_destroy(struct sway_container *output) {
if (!sway_assert(output->type == C_OUTPUT, "Expected an output")) {
return;
}
wlr_log(WLR_DEBUG, "OUTPUT: Destroying output '%s'", output->name);
wl_signal_emit(&output->events.destroy, output);
output_evacuate(output);
output->destroying = true;
container_set_dirty(output);
root_for_each_container(untrack_output, output->sway_output);
wl_list_remove(&output->sway_output->mode.link);
wl_list_remove(&output->sway_output->transform.link);
wl_list_remove(&output->sway_output->scale.link);
wl_list_remove(&output->sway_output->damage_destroy.link);
wl_list_remove(&output->sway_output->damage_frame.link);
output->sway_output->swayc = NULL;
output->sway_output = NULL;
if (output->parent) {
container_remove_child(output);
}
}
void output_for_each_workspace(struct sway_container *output,
void (*f)(struct sway_container *con, void *data), void *data) {
if (!sway_assert(output->type == C_OUTPUT, "Expected an output")) {
return;
}
for (int i = 0; i < output->children->length; ++i) {
struct sway_container *workspace = output->children->items[i];
f(workspace, data);
}
}
void output_for_each_container(struct sway_container *output,
void (*f)(struct sway_container *con, void *data), void *data) {
if (!sway_assert(output->type == C_OUTPUT, "Expected an output")) {
return;
}
for (int i = 0; i < output->children->length; ++i) {
struct sway_container *workspace = output->children->items[i];
workspace_for_each_container(workspace, f, data);
}
}
struct sway_container *output_find_workspace(struct sway_container *output,
bool (*test)(struct sway_container *con, void *data), void *data) {
if (!sway_assert(output->type == C_OUTPUT, "Expected an output")) {
return NULL;
}
for (int i = 0; i < output->children->length; ++i) {
struct sway_container *workspace = output->children->items[i];
if (test(workspace, data)) {
return workspace;
}
}
return NULL;
}
struct sway_container *output_find_container(struct sway_container *output,
bool (*test)(struct sway_container *con, void *data), void *data) {
if (!sway_assert(output->type == C_OUTPUT, "Expected an output")) {
return NULL;
}
struct sway_container *result = NULL;
for (int i = 0; i < output->children->length; ++i) {
struct sway_container *workspace = output->children->items[i];
if ((result = workspace_find_container(workspace, test, data))) {
return result;
}
}
return NULL;
}
static int sort_workspace_cmp_qsort(const void *_a, const void *_b) {
struct sway_container *a = *(void **)_a;
struct sway_container *b = *(void **)_b;
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);
return (a_num < b_num) ? -1 : (a_num > b_num);
} else if (isdigit(a->name[0])) {
return -1;
} else if (isdigit(b->name[0])) {
return 1;
}
return 0;
}
void output_sort_workspaces(struct sway_container *output) {
list_stable_sort(output->children, sort_workspace_cmp_qsort);
}