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#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "ipc-client.h"
#include "list.h"
#include "log.h"
#include "ipc.h"
#include "render.h"
#include "config.h"
#include "status_line.h"
#include "state.h"
static void state_init(struct swaybar_state *state) {
state->config = init_config();
state->status = init_status_line();
state->output = malloc(sizeof(struct output));
state->output->window = NULL;
state->output->registry = NULL;
state->output->workspaces = create_list();
state->output->name = NULL;
}
static void spawn_status_cmd_proc(struct swaybar_state *state) {
if (state->config->status_command) {
int pipefd[2];
pipe(pipefd);
state->status_command_pid = fork();
if (state->status_command_pid == 0) {
close(pipefd[0]);
dup2(pipefd[1], STDOUT_FILENO);
close(pipefd[1]);
char *const cmd[] = {
"sh",
"-c",
state->config->status_command,
NULL,
};
execvp(cmd[0], cmd);
return;
}
close(pipefd[1]);
state->status_read_fd = pipefd[0];
fcntl(state->status_read_fd, F_SETFL, O_NONBLOCK);
}
}
void state_setup(struct swaybar_state *state, const char *socket_path, const char *bar_id, int desired_output) {
/* initialize state with default values */
state_init(state);
state->output->registry = registry_poll();
if (!state->output->registry->desktop_shell) {
sway_abort("swaybar requires the compositor to support the desktop-shell extension.");
}
/* connect to sway ipc */
state->ipc_socketfd = ipc_open_socket(socket_path);
state->ipc_event_socketfd = ipc_open_socket(socket_path);
ipc_bar_init(state, desired_output, bar_id);
struct output_state *output = state->output->registry->outputs->items[desired_output];
state->output->window = window_setup(state->output->registry, output->width, 30, false);
if (!state->output->window) {
sway_abort("Failed to create window.");
}
desktop_shell_set_panel(state->output->registry->desktop_shell, output->output, state->output->window->surface);
desktop_shell_set_panel_position(state->output->registry->desktop_shell, state->config->position);
/* set font */
state->output->window->font = state->config->font;
/* set window height */
set_window_height(state->output->window, state->config->height);
/* spawn status command */
spawn_status_cmd_proc(state);
}
void state_run(struct swaybar_state *state) {
fd_set readfds;
int activity;
bool dirty = true;
while (1) {
if (dirty) {
struct output *output = state->output;
if (window_prerender(output->window) && output->window->cairo) {
render(output, state->config, state->status);
window_render(output->window);
if (wl_display_dispatch(output->registry->display) == -1) {
break;
}
}
}
dirty = false;
FD_ZERO(&readfds);
FD_SET(state->ipc_event_socketfd, &readfds);
FD_SET(state->status_read_fd, &readfds);
activity = select(FD_SETSIZE, &readfds, NULL, NULL, NULL);
if (activity < 0) {
sway_log(L_ERROR, "polling failed: %d", errno);
}
if (FD_ISSET(state->ipc_event_socketfd, &readfds)) {
sway_log(L_DEBUG, "Got IPC event.");
dirty = handle_ipc_event(state);
}
if (state->config->status_command && FD_ISSET(state->status_read_fd, &readfds)) {
sway_log(L_DEBUG, "Got update from status command.");
dirty = handle_status_line(state);
}
}
}
void free_workspaces(list_t *workspaces) {
int i;
for (i = 0; i < workspaces->length; ++i) {
struct workspace *ws = workspaces->items[i];
free(ws->name);
free(ws);
}
list_free(workspaces);
}
static void free_output(struct output *output) {
window_teardown(output->window);
if (output->registry) {
registry_teardown(output->registry);
}
free(output->name);
if (output->workspaces) {
free_workspaces(output->workspaces);
}
free(output);
}
static void terminate_status_command(pid_t pid) {
if (pid) {
// terminate status_command process
int ret = kill(pid, SIGTERM);
if (ret != 0) {
sway_log(L_ERROR, "Unable to terminate status_command [pid: %d]", pid);
} else {
int status;
waitpid(pid, &status, 0);
}
}
}
void state_teardown(struct swaybar_state *state) {
free_config(state->config);
free_output(state->output);
free_status_line(state->status);
/* close sockets/pipes */
if (state->status_read_fd) {
close(state->status_read_fd);
}
if (state->ipc_socketfd) {
close(state->ipc_socketfd);
}
if (state->ipc_event_socketfd) {
close(state->ipc_event_socketfd);
}
/* terminate status command process */
terminate_status_command(state->status_command_pid);
}
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