swayfx/sway/config/output.c
2018-11-13 13:45:01 +00:00

357 lines
9.8 KiB
C

#define _XOPEN_SOURCE 700
#include <assert.h>
#include <stdbool.h>
#include <string.h>
#include <signal.h>
#include <sys/wait.h>
#include <unistd.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
#include "sway/config.h"
#include "sway/output.h"
#include "sway/tree/root.h"
#include "log.h"
int output_name_cmp(const void *item, const void *data) {
const struct output_config *output = item;
const char *name = data;
return strcmp(output->name, name);
}
void output_get_identifier(char *identifier, size_t len,
struct sway_output *output) {
struct wlr_output *wlr_output = output->wlr_output;
snprintf(identifier, len, "%s %s %s", wlr_output->make, wlr_output->model,
wlr_output->serial);
}
struct output_config *new_output_config(const char *name) {
struct output_config *oc = calloc(1, sizeof(struct output_config));
if (oc == NULL) {
return NULL;
}
oc->name = strdup(name);
if (oc->name == NULL) {
free(oc);
return NULL;
}
oc->enabled = -1;
oc->width = oc->height = -1;
oc->refresh_rate = -1;
oc->x = oc->y = -1;
oc->scale = -1;
oc->transform = -1;
return oc;
}
void merge_output_config(struct output_config *dst, struct output_config *src) {
if (src->enabled != -1) {
dst->enabled = src->enabled;
}
if (src->width != -1) {
dst->width = src->width;
}
if (src->height != -1) {
dst->height = src->height;
}
if (src->x != -1) {
dst->x = src->x;
}
if (src->y != -1) {
dst->y = src->y;
}
if (src->scale != -1) {
dst->scale = src->scale;
}
if (src->refresh_rate != -1) {
dst->refresh_rate = src->refresh_rate;
}
if (src->transform != -1) {
dst->transform = src->transform;
}
if (src->background) {
free(dst->background);
dst->background = strdup(src->background);
}
if (src->background_option) {
free(dst->background_option);
dst->background_option = strdup(src->background_option);
}
if (src->background_fallback) {
free(dst->background_fallback);
dst->background_fallback = strdup(src->background_fallback);
}
if (src->dpms_state != 0) {
dst->dpms_state = src->dpms_state;
}
}
static void merge_wildcard_on_all(struct output_config *wildcard) {
for (int i = 0; i < config->output_configs->length; i++) {
struct output_config *oc = config->output_configs->items[i];
if (strcmp(wildcard->name, oc->name) != 0) {
wlr_log(WLR_DEBUG, "Merging output * config on %s", oc->name);
merge_output_config(oc, wildcard);
}
}
}
struct output_config *store_output_config(struct output_config *oc) {
bool wildcard = strcmp(oc->name, "*") == 0;
if (wildcard) {
merge_wildcard_on_all(oc);
}
int i = list_seq_find(config->output_configs, output_name_cmp, oc->name);
if (i >= 0) {
wlr_log(WLR_DEBUG, "Merging on top of existing output config");
struct output_config *current = config->output_configs->items[i];
merge_output_config(current, oc);
free_output_config(oc);
oc = current;
} else if (!wildcard) {
wlr_log(WLR_DEBUG, "Adding non-wildcard output config");
i = list_seq_find(config->output_configs, output_name_cmp, "*");
if (i >= 0) {
wlr_log(WLR_DEBUG, "Merging on top of output * config");
struct output_config *current = new_output_config(oc->name);
merge_output_config(current, config->output_configs->items[i]);
merge_output_config(current, oc);
free_output_config(oc);
oc = current;
}
list_add(config->output_configs, oc);
} else {
// New wildcard config. Just add it
wlr_log(WLR_DEBUG, "Adding output * config");
list_add(config->output_configs, oc);
}
wlr_log(WLR_DEBUG, "Config stored for output %s (enabled: %d) (%dx%d@%fHz "
"position %d,%d scale %f transform %d) (bg %s %s) (dpms %d)",
oc->name, oc->enabled, oc->width, oc->height, oc->refresh_rate,
oc->x, oc->y, oc->scale, oc->transform, oc->background,
oc->background_option, oc->dpms_state);
return oc;
}
static void set_mode(struct wlr_output *output, int width, int height,
float refresh_rate) {
int mhz = (int)(refresh_rate * 1000);
if (wl_list_empty(&output->modes)) {
wlr_log(WLR_DEBUG, "Assigning custom mode to %s", output->name);
wlr_output_set_custom_mode(output, width, height, mhz);
return;
}
struct wlr_output_mode *mode, *best = NULL;
wl_list_for_each(mode, &output->modes, link) {
if (mode->width == width && mode->height == height) {
if (mode->refresh == mhz) {
best = mode;
break;
}
best = mode;
}
}
if (!best) {
wlr_log(WLR_ERROR, "Configured mode for %s not available", output->name);
} else {
wlr_log(WLR_DEBUG, "Assigning configured mode to %s", output->name);
wlr_output_set_mode(output, best);
}
}
void terminate_swaybg(pid_t pid) {
int ret = kill(pid, SIGTERM);
if (ret != 0) {
wlr_log(WLR_ERROR, "Unable to terminate swaybg [pid: %d]", pid);
} else {
int status;
waitpid(pid, &status, 0);
}
}
void apply_output_config(struct output_config *oc, struct sway_output *output) {
struct wlr_output *wlr_output = output->wlr_output;
if (oc && oc->enabled == 0) {
if (output->enabled) {
if (output->bg_pid != 0) {
terminate_swaybg(output->bg_pid);
output->bg_pid = 0;
}
output_disable(output);
wlr_output_layout_remove(root->output_layout, wlr_output);
}
wlr_output_enable(wlr_output, false);
return;
} else if (!output->enabled) {
if (!oc || oc->dpms_state != DPMS_OFF) {
wlr_output_enable(wlr_output, true);
}
output_enable(output, oc);
return;
}
if (oc && oc->width > 0 && oc->height > 0) {
wlr_log(WLR_DEBUG, "Set %s mode to %dx%d (%f GHz)", oc->name, oc->width,
oc->height, oc->refresh_rate);
set_mode(wlr_output, oc->width, oc->height, oc->refresh_rate);
} else if (!wl_list_empty(&wlr_output->modes)) {
struct wlr_output_mode *mode =
wl_container_of(wlr_output->modes.prev, mode, link);
wlr_output_set_mode(wlr_output, mode);
}
if (oc && oc->scale > 0) {
wlr_log(WLR_DEBUG, "Set %s scale to %f", oc->name, oc->scale);
wlr_output_set_scale(wlr_output, oc->scale);
}
if (oc && oc->transform >= 0) {
wlr_log(WLR_DEBUG, "Set %s transform to %d", oc->name, oc->transform);
wlr_output_set_transform(wlr_output, oc->transform);
}
// Find position for it
if (oc && (oc->x != -1 || oc->y != -1)) {
wlr_log(WLR_DEBUG, "Set %s position to %d, %d", oc->name, oc->x, oc->y);
wlr_output_layout_add(root->output_layout, wlr_output, oc->x, oc->y);
} else {
wlr_output_layout_add_auto(root->output_layout, wlr_output);
}
int output_i;
for (output_i = 0; output_i < root->outputs->length; ++output_i) {
if (root->outputs->items[output_i] == output) {
break;
}
}
if (output->bg_pid != 0) {
terminate_swaybg(output->bg_pid);
}
if (oc && oc->background && config->swaybg_command) {
wlr_log(WLR_DEBUG, "Setting background for output %d to %s",
output_i, oc->background);
size_t len = snprintf(NULL, 0, "%s %d \"%s\" %s %s",
config->swaybg_command, output_i, oc->background,
oc->background_option,
oc->background_fallback ? oc->background_fallback : "");
char *command = malloc(len + 1);
if (!command) {
wlr_log(WLR_DEBUG, "Unable to allocate swaybg command");
return;
}
snprintf(command, len + 1, "%s %d \"%s\" %s %s",
config->swaybg_command, output_i, oc->background,
oc->background_option,
oc->background_fallback ? oc->background_fallback : "");
wlr_log(WLR_DEBUG, "-> %s", command);
char *const cmd[] = { "sh", "-c", command, NULL };
output->bg_pid = fork();
if (output->bg_pid == 0) {
execvp(cmd[0], cmd);
} else {
free(command);
}
}
if (oc) {
switch (oc->dpms_state) {
case DPMS_ON:
wlr_log(WLR_DEBUG, "Turning on screen");
wlr_output_enable(wlr_output, true);
break;
case DPMS_OFF:
wlr_log(WLR_DEBUG, "Turning off screen");
wlr_output_enable(wlr_output, false);
break;
case DPMS_IGNORE:
break;
}
}
}
static struct output_config *get_output_config(char *name, char *identifier) {
int i = list_seq_find(config->output_configs, output_name_cmp, name);
if (i >= 0) {
return config->output_configs->items[i];
}
i = list_seq_find(config->output_configs, output_name_cmp, identifier);
if (i >= 0) {
return config->output_configs->items[i];
}
return NULL;
}
void apply_output_config_to_outputs(struct output_config *oc) {
// Try to find the output container and apply configuration now. If
// this is during startup then there will be no container and config
// will be applied during normal "new output" event from wlroots.
bool wildcard = strcmp(oc->name, "*") == 0;
char id[128];
struct sway_output *sway_output;
wl_list_for_each(sway_output, &root->all_outputs, link) {
char *name = sway_output->wlr_output->name;
output_get_identifier(id, sizeof(id), sway_output);
if (wildcard || !strcmp(name, oc->name) || !strcmp(id, oc->name)) {
struct output_config *current = oc;
if (wildcard) {
struct output_config *tmp = get_output_config(name, id);
if (tmp) {
current = tmp;
}
}
apply_output_config(current, sway_output);
if (!wildcard) {
// Stop looking if the output config isn't applicable to all
// outputs
break;
}
}
}
}
void free_output_config(struct output_config *oc) {
if (!oc) {
return;
}
free(oc->name);
free(oc->background);
free(oc->background_option);
free(oc->background_fallback);
free(oc);
}
static void default_output_config(struct output_config *oc,
struct wlr_output *wlr_output) {
oc->enabled = 1;
if (!wl_list_empty(&wlr_output->modes)) {
struct wlr_output_mode *mode =
wl_container_of(wlr_output->modes.prev, mode, link);
oc->width = mode->width;
oc->height = mode->height;
oc->refresh_rate = mode->refresh;
}
oc->x = oc->y = -1;
oc->scale = 1;
oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
}
void create_default_output_configs(void) {
struct sway_output *sway_output;
wl_list_for_each(sway_output, &root->all_outputs, link) {
char *name = sway_output->wlr_output->name;
struct output_config *oc = new_output_config(name);
default_output_config(oc, sway_output->wlr_output);
list_add(config->output_configs, oc);
}
}