swayfx/sway/tree/output.c
Simon Zeni 0cd8efe0bb sway: replace noop_output by fallback_output
wlroots removed the support for the noop backend. Instead we rely on the
headless backend to provide the fallback output.
2021-11-25 17:48:34 +01:00

406 lines
12 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <ctype.h>
#include <string.h>
#include <strings.h>
#include <wlr/types/wlr_output_damage.h>
#include "sway/ipc-server.h"
#include "sway/layers.h"
#include "sway/output.h"
#include "sway/tree/arrange.h"
#include "sway/tree/workspace.h"
#include "log.h"
#include "util.h"
enum wlr_direction opposite_direction(enum wlr_direction d) {
switch (d) {
case WLR_DIRECTION_UP:
return WLR_DIRECTION_DOWN;
case WLR_DIRECTION_DOWN:
return WLR_DIRECTION_UP;
case WLR_DIRECTION_RIGHT:
return WLR_DIRECTION_LEFT;
case WLR_DIRECTION_LEFT:
return WLR_DIRECTION_RIGHT;
}
assert(false);
return 0;
}
static void restore_workspaces(struct sway_output *output) {
// Workspace output priority
for (int i = 0; i < root->outputs->length; i++) {
struct sway_output *other = root->outputs->items[i];
if (other == output) {
continue;
}
for (int j = 0; j < other->workspaces->length; j++) {
struct sway_workspace *ws = other->workspaces->items[j];
struct sway_output *highest =
workspace_output_get_highest_available(ws, NULL);
if (highest == output) {
workspace_detach(ws);
output_add_workspace(output, ws);
ipc_event_workspace(NULL, ws, "move");
j--;
}
}
if (other->workspaces->length == 0) {
char *next = workspace_next_name(other->wlr_output->name);
struct sway_workspace *ws = workspace_create(other, next);
free(next);
ipc_event_workspace(NULL, ws, "init");
}
}
// Saved workspaces
while (root->fallback_output->workspaces->length) {
struct sway_workspace *ws = root->fallback_output->workspaces->items[0];
workspace_detach(ws);
output_add_workspace(output, ws);
// If the floater was made floating while on the NOOP output, its width
// and height will be zero and it should be reinitialized as a floating
// container to get the appropriate size and location. Additionally, if
// the floater is wider or taller than the output or is completely
// outside of the output's bounds, do the same as the output layout has
// likely changed and the maximum size needs to be checked and the
// floater re-centered
for (int i = 0; i < ws->floating->length; i++) {
struct sway_container *floater = ws->floating->items[i];
if (floater->pending.width == 0 || floater->pending.height == 0 ||
floater->pending.width > output->width ||
floater->pending.height > output->height ||
floater->pending.x > output->lx + output->width ||
floater->pending.y > output->ly + output->height ||
floater->pending.x + floater->pending.width < output->lx ||
floater->pending.y + floater->pending.height < output->ly) {
container_floating_resize_and_center(floater);
}
}
ipc_event_workspace(NULL, ws, "move");
}
output_sort_workspaces(output);
}
struct sway_output *output_create(struct wlr_output *wlr_output) {
struct sway_output *output = calloc(1, sizeof(struct sway_output));
node_init(&output->node, N_OUTPUT, output);
output->wlr_output = wlr_output;
wlr_output->data = output;
output->detected_subpixel = wlr_output->subpixel;
output->scale_filter = SCALE_FILTER_NEAREST;
wl_signal_init(&output->events.destroy);
wl_list_insert(&root->all_outputs, &output->link);
output->workspaces = create_list();
output->current.workspaces = create_list();
size_t len = sizeof(output->layers) / sizeof(output->layers[0]);
for (size_t i = 0; i < len; ++i) {
wl_list_init(&output->layers[i]);
}
return output;
}
void output_enable(struct sway_output *output) {
if (!sway_assert(!output->enabled, "output is already enabled")) {
return;
}
struct wlr_output *wlr_output = output->wlr_output;
output->enabled = true;
list_add(root->outputs, output);
restore_workspaces(output);
struct sway_workspace *ws = NULL;
if (!output->workspaces->length) {
// Create workspace
char *ws_name = workspace_next_name(wlr_output->name);
sway_log(SWAY_DEBUG, "Creating default workspace %s", ws_name);
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, &server.input->seats, link) {
if (!seat->has_focus) {
seat_set_focus_workspace(seat, ws);
}
}
free(ws_name);
ipc_event_workspace(NULL, ws, "init");
}
if (ws && config->default_orientation == L_NONE) {
// Since the output transformation and resolution could have changed
// due to applying the output config, the previously set layout for the
// created workspace may not be correct for `default_orientation auto`
ws->layout = output_get_default_layout(output);
}
input_manager_configure_xcursor();
wl_signal_emit(&root->events.new_node, &output->node);
arrange_layers(output);
arrange_root();
}
static void evacuate_sticky(struct sway_workspace *old_ws,
struct sway_output *new_output) {
struct sway_workspace *new_ws = output_get_active_workspace(new_output);
if (!sway_assert(new_ws, "New output does not have a workspace")) {
return;
}
while(old_ws->floating->length) {
struct sway_container *sticky = old_ws->floating->items[0];
container_detach(sticky);
workspace_add_floating(new_ws, sticky);
container_handle_fullscreen_reparent(sticky);
container_floating_move_to_center(sticky);
ipc_event_window(sticky, "move");
}
workspace_detect_urgent(new_ws);
}
static void output_evacuate(struct sway_output *output) {
if (!output->workspaces->length) {
return;
}
struct sway_output *fallback_output = NULL;
if (root->outputs->length > 1) {
fallback_output = root->outputs->items[0];
if (fallback_output == output) {
fallback_output = root->outputs->items[1];
}
}
while (output->workspaces->length) {
struct sway_workspace *workspace = output->workspaces->items[0];
workspace_detach(workspace);
struct sway_output *new_output =
workspace_output_get_highest_available(workspace, output);
if (!new_output) {
new_output = fallback_output;
}
if (!new_output) {
new_output = root->fallback_output;
}
struct sway_workspace *new_output_ws =
output_get_active_workspace(new_output);
if (workspace_is_empty(workspace)) {
// If the new output has an active workspace (the noop output may
// not have one), move all sticky containers to it
if (new_output_ws &&
workspace_num_sticky_containers(workspace) > 0) {
evacuate_sticky(workspace, new_output);
}
if (workspace_num_sticky_containers(workspace) == 0) {
workspace_begin_destroy(workspace);
continue;
}
}
workspace_output_add_priority(workspace, new_output);
output_add_workspace(new_output, workspace);
output_sort_workspaces(new_output);
ipc_event_workspace(NULL, workspace, "move");
// If there is an old workspace (the noop output may not have one),
// check to see if it is empty and should be destroyed.
if (new_output_ws) {
workspace_consider_destroy(new_output_ws);
}
}
}
void output_destroy(struct sway_output *output) {
if (!sway_assert(output->node.destroying,
"Tried to free output which wasn't marked as destroying")) {
return;
}
if (!sway_assert(output->wlr_output == NULL,
"Tried to free output which still had a wlr_output")) {
return;
}
if (!sway_assert(output->node.ntxnrefs == 0, "Tried to free output "
"which is still referenced by transactions")) {
return;
}
list_free(output->workspaces);
list_free(output->current.workspaces);
wl_event_source_remove(output->repaint_timer);
free(output);
}
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_disable(struct sway_output *output) {
if (!sway_assert(output->enabled, "Expected an enabled output")) {
return;
}
int index = list_find(root->outputs, output);
if (!sway_assert(index >= 0, "Output not found in root node")) {
return;
}
sway_log(SWAY_DEBUG, "Disabling output '%s'", output->wlr_output->name);
wl_signal_emit(&output->events.destroy, output);
output_evacuate(output);
root_for_each_container(untrack_output, output);
list_del(root->outputs, index);
output->enabled = false;
output->current_mode = NULL;
arrange_root();
// Reconfigure all devices, since devices with map_to_output directives for
// an output that goes offline should stop sending events as long as the
// output remains offline.
input_manager_configure_all_inputs();
}
void output_begin_destroy(struct sway_output *output) {
if (!sway_assert(!output->enabled, "Expected a disabled output")) {
return;
}
sway_log(SWAY_DEBUG, "Destroying output '%s'", output->wlr_output->name);
output->node.destroying = true;
node_set_dirty(&output->node);
wl_list_remove(&output->link);
output->wlr_output->data = NULL;
output->wlr_output = NULL;
}
struct sway_output *output_from_wlr_output(struct wlr_output *output) {
return output->data;
}
struct sway_output *output_get_in_direction(struct sway_output *reference,
enum wlr_direction direction) {
if (!sway_assert(direction, "got invalid direction: %d", direction)) {
return NULL;
}
struct wlr_box *output_box =
wlr_output_layout_get_box(root->output_layout, reference->wlr_output);
int lx = output_box->x + output_box->width / 2;
int ly = output_box->y + output_box->height / 2;
struct wlr_output *wlr_adjacent = wlr_output_layout_adjacent_output(
root->output_layout, direction, reference->wlr_output, lx, ly);
if (!wlr_adjacent) {
return NULL;
}
return output_from_wlr_output(wlr_adjacent);
}
void output_add_workspace(struct sway_output *output,
struct sway_workspace *workspace) {
if (workspace->output) {
workspace_detach(workspace);
}
list_add(output->workspaces, workspace);
workspace->output = output;
node_set_dirty(&output->node);
node_set_dirty(&workspace->node);
}
void output_for_each_workspace(struct sway_output *output,
void (*f)(struct sway_workspace *ws, void *data), void *data) {
for (int i = 0; i < output->workspaces->length; ++i) {
struct sway_workspace *workspace = output->workspaces->items[i];
f(workspace, data);
}
}
void output_for_each_container(struct sway_output *output,
void (*f)(struct sway_container *con, void *data), void *data) {
for (int i = 0; i < output->workspaces->length; ++i) {
struct sway_workspace *workspace = output->workspaces->items[i];
workspace_for_each_container(workspace, f, data);
}
}
struct sway_workspace *output_find_workspace(struct sway_output *output,
bool (*test)(struct sway_workspace *ws, void *data), void *data) {
for (int i = 0; i < output->workspaces->length; ++i) {
struct sway_workspace *workspace = output->workspaces->items[i];
if (test(workspace, data)) {
return workspace;
}
}
return NULL;
}
struct sway_container *output_find_container(struct sway_output *output,
bool (*test)(struct sway_container *con, void *data), void *data) {
struct sway_container *result = NULL;
for (int i = 0; i < output->workspaces->length; ++i) {
struct sway_workspace *workspace = output->workspaces->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_workspace *a = *(void **)_a;
struct sway_workspace *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_output *output) {
list_stable_sort(output->workspaces, sort_workspace_cmp_qsort);
}
void output_get_box(struct sway_output *output, struct wlr_box *box) {
box->x = output->lx;
box->y = output->ly;
box->width = output->width;
box->height = output->height;
}
enum sway_container_layout output_get_default_layout(
struct sway_output *output) {
if (config->default_orientation != L_NONE) {
return config->default_orientation;
}
if (output->height > output->width) {
return L_VERT;
}
return L_HORIZ;
}