wlroots/examples/foreign-toplevel.c

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#define _POSIX_C_SOURCE 200809L
#include <getopt.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wayland-client.h>
#include "wlr-foreign-toplevel-management-unstable-v1-client-protocol.h"
#define WLR_FOREIGN_TOPLEVEL_MANAGEMENT_VERSION 2
/**
* Usage:
* 1. foreign-toplevel
* Prints a list of opened toplevels
* 2. foreign-toplevel -f <id>
* Focus the toplevel with the given id
* 3. foreign-toplevel -a <id>
* Maximize the toplevel with the given id
* 4. foreign-toplevel -u <id>
* Unmaximize the toplevel with the given id
* 5. foreign-toplevel -i <id>
* Minimize the toplevel with the given id
* 6. foreign-toplevel -r <id>
* Restore(unminimize) the toplevel with the given id
* 7. foreign-toplevel -c <id>
* Close the toplevel with the given id
* 8. foreign-toplevel -m
* Continuously print changes to the list of opened toplevels.
* Can be used together with some of the previous options.
*/
enum toplevel_state_field {
TOPLEVEL_STATE_MAXIMIZED = (1 << 0),
TOPLEVEL_STATE_MINIMIZED = (1 << 1),
TOPLEVEL_STATE_ACTIVATED = (1 << 2),
TOPLEVEL_STATE_FULLSCREEN = (1 << 3),
TOPLEVEL_STATE_INVALID = (1 << 4),
};
struct toplevel_state {
char *title;
char *app_id;
uint32_t state;
};
static void copy_state(struct toplevel_state *current,
struct toplevel_state *pending) {
if (current->title && pending->title) {
free(current->title);
}
if (current->app_id && pending->app_id) {
free(current->app_id);
}
if (pending->title) {
current->title = pending->title;
pending->title = NULL;
}
if (pending->app_id) {
current->app_id = pending->app_id;
pending->app_id = NULL;
}
if (!(pending->state & TOPLEVEL_STATE_INVALID)) {
current->state = pending->state;
}
pending->state = TOPLEVEL_STATE_INVALID;
}
static uint32_t global_id = 0;
struct toplevel_v1 {
struct wl_list link;
struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel;
uint32_t id;
struct toplevel_state current, pending;
};
static void print_toplevel(struct toplevel_v1 *toplevel, bool print_endl) {
printf("-> %d. title=%s app_id=%s", toplevel->id,
toplevel->current.title ?: "(nil)",
toplevel->current.app_id ?: "(nil)");
if (print_endl) {
printf("\n");
}
}
static void print_toplevel_state(struct toplevel_v1 *toplevel, bool print_endl) {
if (toplevel->current.state & TOPLEVEL_STATE_MAXIMIZED) {
printf(" maximized");
} else {
printf(" unmaximized");
}
if (toplevel->current.state & TOPLEVEL_STATE_MINIMIZED) {
printf(" minimized");
} else {
printf(" unminimized");
}
if (toplevel->current.state & TOPLEVEL_STATE_ACTIVATED) {
printf(" active");
} else {
printf(" inactive");
}
if (toplevel->current.state & TOPLEVEL_STATE_FULLSCREEN) {
printf(" fullscreen");
}
if (print_endl) {
printf("\n");
}
}
static void toplevel_handle_title(void *data,
struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel,
const char *title) {
struct toplevel_v1 *toplevel = data;
free(toplevel->pending.title);
toplevel->pending.title = strdup(title);
}
static void toplevel_handle_app_id(void *data,
struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel,
const char *app_id) {
struct toplevel_v1 *toplevel = data;
free(toplevel->pending.app_id);
toplevel->pending.app_id = strdup(app_id);
}
static void toplevel_handle_output_enter(void *data,
struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel,
struct wl_output *output) {
struct toplevel_v1 *toplevel = data;
print_toplevel(toplevel, false);
printf(" enter output %u\n",
(uint32_t)(size_t)wl_output_get_user_data(output));
}
static void toplevel_handle_output_leave(void *data,
struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel,
struct wl_output *output) {
struct toplevel_v1 *toplevel = data;
print_toplevel(toplevel, false);
printf(" leave output %u\n",
(uint32_t)(size_t)wl_output_get_user_data(output));
}
static uint32_t array_to_state(struct wl_array *array) {
uint32_t state = 0;
uint32_t *entry;
wl_array_for_each(entry, array) {
if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MAXIMIZED)
state |= TOPLEVEL_STATE_MAXIMIZED;
if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MINIMIZED)
state |= TOPLEVEL_STATE_MINIMIZED;
if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_ACTIVATED)
state |= TOPLEVEL_STATE_ACTIVATED;
if (*entry == ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN)
state |= TOPLEVEL_STATE_FULLSCREEN;
}
return state;
}
static void toplevel_handle_state(void *data,
struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel,
struct wl_array *state) {
struct toplevel_v1 *toplevel = data;
toplevel->pending.state = array_to_state(state);
}
static void toplevel_handle_done(void *data,
struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel) {
struct toplevel_v1 *toplevel = data;
bool state_changed = toplevel->current.state != toplevel->pending.state;
copy_state(&toplevel->current, &toplevel->pending);
print_toplevel(toplevel, !state_changed);
if (state_changed) {
print_toplevel_state(toplevel, true);
}
}
static void toplevel_handle_closed(void *data,
struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel) {
struct toplevel_v1 *toplevel = data;
print_toplevel(toplevel, false);
printf(" closed\n");
zwlr_foreign_toplevel_handle_v1_destroy(zwlr_toplevel);
}
static const struct zwlr_foreign_toplevel_handle_v1_listener toplevel_impl = {
.title = toplevel_handle_title,
.app_id = toplevel_handle_app_id,
.output_enter = toplevel_handle_output_enter,
.output_leave = toplevel_handle_output_leave,
.state = toplevel_handle_state,
.done = toplevel_handle_done,
.closed = toplevel_handle_closed,
};
static struct zwlr_foreign_toplevel_manager_v1 *toplevel_manager = NULL;
static struct wl_list toplevel_list;
static void toplevel_manager_handle_toplevel(void *data,
struct zwlr_foreign_toplevel_manager_v1 *toplevel_manager,
struct zwlr_foreign_toplevel_handle_v1 *zwlr_toplevel) {
struct toplevel_v1 *toplevel = calloc(1, sizeof(struct toplevel_v1));
if (!toplevel) {
fprintf(stderr, "Failed to allocate memory for toplevel\n");
return;
}
toplevel->id = global_id++;
toplevel->zwlr_toplevel = zwlr_toplevel;
wl_list_insert(&toplevel_list, &toplevel->link);
zwlr_foreign_toplevel_handle_v1_add_listener(zwlr_toplevel, &toplevel_impl,
toplevel);
}
static void toplevel_manager_handle_finished(void *data,
struct zwlr_foreign_toplevel_manager_v1 *toplevel_manager) {
zwlr_foreign_toplevel_manager_v1_destroy(toplevel_manager);
}
static const struct zwlr_foreign_toplevel_manager_v1_listener toplevel_manager_impl = {
.toplevel = toplevel_manager_handle_toplevel,
.finished = toplevel_manager_handle_finished,
};
struct wl_seat *seat = NULL;
static void handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version) {
if (strcmp(interface, wl_output_interface.name) == 0) {
struct wl_output *output = wl_registry_bind(registry, name,
&wl_output_interface, version);
wl_output_set_user_data(output, (void*)(size_t)name); // assign some ID to the output
} else if (strcmp(interface,
zwlr_foreign_toplevel_manager_v1_interface.name) == 0) {
toplevel_manager = wl_registry_bind(registry, name,
&zwlr_foreign_toplevel_manager_v1_interface,
WLR_FOREIGN_TOPLEVEL_MANAGEMENT_VERSION);
wl_list_init(&toplevel_list);
zwlr_foreign_toplevel_manager_v1_add_listener(toplevel_manager,
&toplevel_manager_impl, NULL);
} else if (strcmp(interface, wl_seat_interface.name) == 0 && seat == NULL) {
seat = wl_registry_bind(registry, name, &wl_seat_interface, version);
}
}
static void handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name) {
// who cares
}
static const struct wl_registry_listener registry_listener = {
.global = handle_global,
.global_remove = handle_global_remove,
};
/* return NULL when id == -1
* exit if the given ID cannot be found in the list of toplevels */
static struct toplevel_v1 *toplevel_by_id_or_bail(int32_t id) {
if (id == -1) {
return NULL;
}
struct toplevel_v1 *toplevel;
wl_list_for_each(toplevel, &toplevel_list, link) {
if (toplevel->id == (uint32_t)id) {
return toplevel;
}
}
fprintf(stderr, "No toplevel with the given id: %d\n", id);
exit(EXIT_FAILURE);
}
int main(int argc, char **argv) {
int focus_id = -1, close_id = -1;
int maximize_id = -1, unmaximize_id = -1;
int minimize_id = -1, restore_id = -1;
int fullscreen_id = -1, unfullscreen_id = -1;
int one_shot = 1;
int c;
// TODO maybe print usage with -h?
while ((c = getopt(argc, argv, "f:a:u:i:r:c:s:S:m")) != -1) {
switch (c) {
case 'f':
focus_id = atoi(optarg);
break;
case 'a':
maximize_id = atoi(optarg);
break;
case 'u':
unmaximize_id = atoi(optarg);
break;
case 'i':
minimize_id = atoi(optarg);
break;
case 'r':
restore_id = atoi(optarg);
break;
case 'c':
close_id = atoi(optarg);
break;
case 's':
fullscreen_id = atoi(optarg);
break;
case 'S':
unfullscreen_id = atoi(optarg);
break;
case 'm':
one_shot = 0;
break;
}
}
struct wl_display *display = wl_display_connect(NULL);
if (display == NULL) {
fprintf(stderr, "Failed to create display\n");
return EXIT_FAILURE;
}
struct wl_registry *registry = wl_display_get_registry(display);
wl_registry_add_listener(registry, &registry_listener, NULL);
wl_display_dispatch(display);
wl_display_roundtrip(display);
if (toplevel_manager == NULL) {
fprintf(stderr, "wlr-foreign-toplevel not available\n");
return EXIT_FAILURE;
}
wl_display_roundtrip(display); // load list of toplevels
wl_display_roundtrip(display); // load toplevel details
struct toplevel_v1 *toplevel;
if ((toplevel = toplevel_by_id_or_bail(focus_id))) {
zwlr_foreign_toplevel_handle_v1_activate(toplevel->zwlr_toplevel, seat);
}
if ((toplevel = toplevel_by_id_or_bail(maximize_id))) {
zwlr_foreign_toplevel_handle_v1_set_maximized(toplevel->zwlr_toplevel);
}
if ((toplevel = toplevel_by_id_or_bail(unmaximize_id))) {
zwlr_foreign_toplevel_handle_v1_unset_maximized(toplevel->zwlr_toplevel);
}
if ((toplevel = toplevel_by_id_or_bail(minimize_id))) {
zwlr_foreign_toplevel_handle_v1_set_minimized(toplevel->zwlr_toplevel);
}
if ((toplevel = toplevel_by_id_or_bail(restore_id))) {
zwlr_foreign_toplevel_handle_v1_unset_minimized(toplevel->zwlr_toplevel);
}
if ((toplevel = toplevel_by_id_or_bail(fullscreen_id))) {
zwlr_foreign_toplevel_handle_v1_set_fullscreen(toplevel->zwlr_toplevel, NULL);
}
if ((toplevel = toplevel_by_id_or_bail(unfullscreen_id))) {
zwlr_foreign_toplevel_handle_v1_unset_fullscreen(toplevel->zwlr_toplevel);
}
if ((toplevel = toplevel_by_id_or_bail(close_id))) {
zwlr_foreign_toplevel_handle_v1_close(toplevel->zwlr_toplevel);
}
wl_display_flush(display);
if (one_shot == 0) {
while (wl_display_dispatch(display) != -1) {
// This space intentionally left blank
}
}
return EXIT_SUCCESS;
}