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#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/wait.h>
#include <poll.h>
#include "ipc-client.h"
#include "list.h"
#include "log.h"
#include "bar/ipc.h"
#include "bar/render.h"
#include "bar/config.h"
#include "bar/status_line.h"
#include "bar/bar.h"
static void bar_init(struct bar *bar) {
bar->config = init_config();
bar->status = init_status_line();
bar->outputs = create_list();
}
static void spawn_status_cmd_proc(struct bar *bar) {
if (bar->config->status_command) {
int pipefd[2];
pipe(pipefd);
bar->status_command_pid = fork();
if (bar->status_command_pid == 0) {
close(pipefd[0]);
dup2(pipefd[1], STDOUT_FILENO);
close(pipefd[1]);
char *const cmd[] = {
"sh",
"-c",
bar->config->status_command,
NULL,
};
execvp(cmd[0], cmd);
return;
}
close(pipefd[1]);
bar->status_read_fd = pipefd[0];
fcntl(bar->status_read_fd, F_SETFL, O_NONBLOCK);
}
}
struct output *new_output(const char *name) {
struct output *output = malloc(sizeof(struct output));
output->name = strdup(name);
output->window = NULL;
output->registry = NULL;
output->workspaces = create_list();
return output;
}
void bar_setup(struct bar *bar, const char *socket_path, const char *bar_id) {
/* initialize bar with default values */
bar_init(bar);
/* connect to sway ipc */
bar->ipc_socketfd = ipc_open_socket(socket_path);
bar->ipc_event_socketfd = ipc_open_socket(socket_path);
ipc_bar_init(bar, bar_id);
int i;
for (i = 0; i < bar->outputs->length; ++i) {
struct output *bar_output = bar->outputs->items[i];
bar_output->registry = registry_poll();
if (!bar_output->registry->desktop_shell) {
sway_abort("swaybar requires the compositor to support the desktop-shell extension.");
}
struct output_state *output = bar_output->registry->outputs->items[bar_output->idx];
bar_output->window = window_setup(bar_output->registry, output->width, 30, false);
if (!bar_output->window) {
sway_abort("Failed to create window.");
}
desktop_shell_set_panel(bar_output->registry->desktop_shell, output->output, bar_output->window->surface);
desktop_shell_set_panel_position(bar_output->registry->desktop_shell, bar->config->position);
/* set font */
bar_output->window->font = bar->config->font;
/* set window height */
set_window_height(bar_output->window, bar->config->height);
}
/* spawn status command */
spawn_status_cmd_proc(bar);
}
void bar_run(struct bar *bar) {
int pfds = bar->outputs->length + 2;
struct pollfd *pfd = malloc(pfds * sizeof(struct pollfd));
bool dirty = true;
pfd[0].fd = bar->ipc_event_socketfd;
pfd[0].events = POLLIN;
pfd[1].fd = bar->status_read_fd;
pfd[1].events = POLLIN;
int i;
for (i = 0; i < bar->outputs->length; ++i) {
struct output *output = bar->outputs->items[i];
pfd[i+2].fd = wl_display_get_fd(output->registry->display);
pfd[i+2].events = POLLIN;
}
while (1) {
if (dirty) {
int i;
for (i = 0; i < bar->outputs->length; ++i) {
struct output *output = bar->outputs->items[i];
if (window_prerender(output->window) && output->window->cairo) {
render(output, bar->config, bar->status);
window_render(output->window);
wl_display_flush(output->registry->display);
}
}
}
dirty = false;
poll(pfd, pfds, -1);
if (pfd[0].revents & POLLIN) {
sway_log(L_DEBUG, "Got IPC event.");
dirty = handle_ipc_event(bar);
}
if (bar->config->status_command && pfd[1].revents & POLLIN) {
sway_log(L_DEBUG, "Got update from status command.");
dirty = handle_status_line(bar);
}
// dispatch wl_display events
for (i = 0; i < bar->outputs->length; ++i) {
struct output *output = bar->outputs->items[i];
if (pfd[i+2].revents & POLLIN) {
if (wl_display_dispatch(output->registry->display) == -1) {
sway_log(L_ERROR, "failed to dispatch wl: %d", errno);
}
} else {
wl_display_dispatch_pending(output->registry->display);
}
}
}
}
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 free_outputs(list_t *outputs) {
int i;
for (i = 0; i < outputs->length; ++i) {
free_output(outputs->items[i]);
}
list_free(outputs);
}
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 bar_teardown(struct bar *bar) {
free_config(bar->config);
free_outputs(bar->outputs);
free_status_line(bar->status);
/* close sockets/pipes */
if (bar->status_read_fd) {
close(bar->status_read_fd);
}
if (bar->ipc_socketfd) {
close(bar->ipc_socketfd);
}
if (bar->ipc_event_socketfd) {
close(bar->ipc_event_socketfd);
}
/* terminate status command process */
terminate_status_command(bar->status_command_pid);
}
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