sway/swaylock/main.c
2018-04-04 18:47:48 -04:00

486 lines
14 KiB
C

#define _XOPEN_SOURCE 700
#define _POSIX_C_SOURCE 200112L
#include <assert.h>
#include <ctype.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <time.h>
#include <unistd.h>
#include <wayland-client.h>
#include <wlr/util/log.h>
#include <xkbcommon/xkbcommon.h>
#include "background-image.h"
#include "pool-buffer.h"
#include "cairo.h"
#include "util.h"
#include "wlr-layer-shell-unstable-v1-client-protocol.h"
struct swaylock_args {
uint32_t color;
enum background_mode mode;
bool show_indicator;
};
enum mod_bit {
MOD_SHIFT = 1<<0,
MOD_CAPS = 1<<1,
MOD_CTRL = 1<<2,
MOD_ALT = 1<<3,
MOD_MOD2 = 1<<4,
MOD_MOD3 = 1<<5,
MOD_LOGO = 1<<6,
MOD_MOD5 = 1<<7,
};
enum mask {
MASK_SHIFT,
MASK_CAPS,
MASK_CTRL,
MASK_ALT,
MASK_MOD2,
MASK_MOD3,
MASK_LOGO,
MASK_MOD5,
MASK_LAST
};
const char *XKB_MASK_NAMES[MASK_LAST] = {
XKB_MOD_NAME_SHIFT,
XKB_MOD_NAME_CAPS,
XKB_MOD_NAME_CTRL,
XKB_MOD_NAME_ALT,
"Mod2",
"Mod3",
XKB_MOD_NAME_LOGO,
"Mod5",
};
const enum mod_bit XKB_MODS[MASK_LAST] = {
MOD_SHIFT,
MOD_CAPS,
MOD_CTRL,
MOD_ALT,
MOD_MOD2,
MOD_MOD3,
MOD_LOGO,
MOD_MOD5
};
struct swaylock_xkb {
uint32_t modifiers;
struct xkb_state *state;
struct xkb_context *context;
struct xkb_keymap *keymap;
xkb_mod_mask_t masks[MASK_LAST];
};
struct swaylock_state {
struct wl_display *display;
struct wl_compositor *compositor;
struct zwlr_layer_shell_v1 *layer_shell;
struct wl_shm *shm;
struct wl_list contexts;
struct swaylock_args args;
struct swaylock_xkb xkb;
bool run_display;
};
struct swaylock_context {
cairo_surface_t *image;
struct swaylock_state *state;
struct wl_output *output;
struct wl_surface *surface;
struct zwlr_layer_surface_v1 *layer_surface;
struct pool_buffer buffers[2];
struct pool_buffer *current_buffer;
uint32_t width, height;
struct wl_list link;
};
static void daemonize() {
if (fork() == 0) {
int devnull = open("/dev/null", O_RDWR);
dup2(STDOUT_FILENO, devnull);
dup2(STDERR_FILENO, devnull);
chdir("/");
} else {
exit(0);
}
}
static void render_frame(struct swaylock_context *context) {
struct swaylock_state *state = context->state;
context->current_buffer = get_next_buffer(state->shm,
context->buffers, context->width, context->height);
cairo_t *cairo = context->current_buffer->cairo;
if (state->args.mode == BACKGROUND_MODE_SOLID_COLOR) {
cairo_set_source_u32(cairo, state->args.color);
cairo_paint(cairo);
} else {
render_background_image(cairo, context->image,
state->args.mode, context->width, context->height);
}
wl_surface_attach(context->surface, context->current_buffer->buffer, 0, 0);
wl_surface_damage(context->surface, 0, 0, context->width, context->height);
wl_surface_commit(context->surface);
}
static void layer_surface_configure(void *data,
struct zwlr_layer_surface_v1 *surface,
uint32_t serial, uint32_t width, uint32_t height) {
struct swaylock_context *context = data;
context->width = width;
context->height = height;
zwlr_layer_surface_v1_ack_configure(surface, serial);
render_frame(context);
}
static void layer_surface_closed(void *data,
struct zwlr_layer_surface_v1 *surface) {
struct swaylock_context *context = data;
zwlr_layer_surface_v1_destroy(context->layer_surface);
wl_surface_destroy(context->surface);
context->state->run_display = false;
}
static struct zwlr_layer_surface_v1_listener layer_surface_listener = {
.configure = layer_surface_configure,
.closed = layer_surface_closed,
};
static void keyboard_keymap(void *data, struct wl_keyboard *wl_keyboard,
uint32_t format, int32_t fd, uint32_t size) {
struct swaylock_state *state = data;
if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
close(fd);
wlr_log(L_ERROR, "Unknown keymap format %d, aborting", format);
exit(1);
}
char *map_shm = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
if (map_shm == MAP_FAILED) {
close(fd);
wlr_log(L_ERROR, "Unable to initialize keymap shm, aborting");
exit(1);
}
struct xkb_keymap *keymap = xkb_keymap_new_from_string(
state->xkb.context, map_shm, XKB_KEYMAP_FORMAT_TEXT_V1, 0);
munmap(map_shm, size);
close(fd);
assert(keymap);
struct xkb_state *xkb_state = xkb_state_new(keymap);
assert(xkb_state);
xkb_keymap_unref(state->xkb.keymap);
xkb_state_unref(state->xkb.state);
state->xkb.keymap = keymap;
state->xkb.state = xkb_state;
}
static void keyboard_enter(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, struct wl_surface *surface, struct wl_array *keys) {
// Who cares
}
static void keyboard_leave(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, struct wl_surface *surface) {
// Who cares
}
static void keyboard_key(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, uint32_t time, uint32_t key, uint32_t _key_state) {
struct swaylock_state *state = data;
enum wl_keyboard_key_state key_state = _key_state;
xkb_keysym_t sym = xkb_state_key_get_one_sym(state->xkb.state, key + 8);
uint32_t keycode = key_state == WL_KEYBOARD_KEY_STATE_PRESSED ?
key + 8 : 0;
uint32_t codepoint = xkb_state_key_get_utf32(state->xkb.state, keycode);
wlr_log(L_DEBUG, "%c %d", codepoint, sym);
}
static void keyboard_modifiers(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, uint32_t mods_depressed, uint32_t mods_latched,
uint32_t mods_locked, uint32_t group) {
struct swaylock_state *state = data;
xkb_state_update_mask(state->xkb.state,
mods_depressed, mods_latched, mods_locked, 0, 0, group);
xkb_mod_mask_t mask = xkb_state_serialize_mods(state->xkb.state,
XKB_STATE_MODS_DEPRESSED | XKB_STATE_MODS_LATCHED);
state->xkb.modifiers = 0;
for (uint32_t i = 0; i < MASK_LAST; ++i) {
if (mask & state->xkb.masks[i]) {
state->xkb.modifiers |= XKB_MODS[i];
}
}
}
static void keyboard_repeat_info(void *data, struct wl_keyboard *wl_keyboard,
int32_t rate, int32_t delay) {
// TODO
}
static struct wl_keyboard_listener keyboard_listener = {
.keymap = keyboard_keymap,
.enter = keyboard_enter,
.leave = keyboard_leave,
.key = keyboard_key,
.modifiers = keyboard_modifiers,
.repeat_info = keyboard_repeat_info,
};
static void wl_pointer_enter(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, struct wl_surface *surface,
wl_fixed_t surface_x, wl_fixed_t surface_y) {
wl_pointer_set_cursor(wl_pointer, serial, NULL, 0, 0);
}
static void wl_pointer_leave(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, struct wl_surface *surface) {
// Who cares
}
static void wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
uint32_t time, wl_fixed_t surface_x, wl_fixed_t surface_y) {
// Who cares
}
static void wl_pointer_button(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, uint32_t time, uint32_t button, uint32_t state) {
// Who cares
}
static void wl_pointer_axis(void *data, struct wl_pointer *wl_pointer,
uint32_t time, uint32_t axis, wl_fixed_t value) {
// Who cares
}
static void wl_pointer_frame(void *data, struct wl_pointer *wl_pointer) {
// Who cares
}
static void wl_pointer_axis_source(void *data, struct wl_pointer *wl_pointer,
uint32_t axis_source) {
// Who cares
}
static void wl_pointer_axis_stop(void *data, struct wl_pointer *wl_pointer,
uint32_t time, uint32_t axis) {
// Who cares
}
static void wl_pointer_axis_discrete(void *data, struct wl_pointer *wl_pointer,
uint32_t axis, int32_t discrete) {
// Who cares
}
static struct wl_pointer_listener pointer_listener = {
.enter = wl_pointer_enter,
.leave = wl_pointer_leave,
.motion = wl_pointer_motion,
.button = wl_pointer_button,
.axis = wl_pointer_axis,
.frame = wl_pointer_frame,
.axis_source = wl_pointer_axis_source,
.axis_stop = wl_pointer_axis_stop,
.axis_discrete = wl_pointer_axis_discrete,
};
static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
enum wl_seat_capability caps) {
struct swaylock_state *state = data;
if ((caps & WL_SEAT_CAPABILITY_POINTER)) {
struct wl_pointer *pointer = wl_seat_get_pointer(wl_seat);
wl_pointer_add_listener(pointer, &pointer_listener, NULL);
}
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD)) {
struct wl_keyboard *keyboard = wl_seat_get_keyboard(wl_seat);
wl_keyboard_add_listener(keyboard, &keyboard_listener, state);
}
}
static void seat_handle_name(void *data, struct wl_seat *wl_seat,
const char *name) {
// Who cares
}
const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
.name = seat_handle_name,
};
static void handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version) {
struct swaylock_state *state = data;
if (strcmp(interface, wl_compositor_interface.name) == 0) {
state->compositor = wl_registry_bind(registry, name,
&wl_compositor_interface, 1);
} else if (strcmp(interface, wl_shm_interface.name) == 0) {
state->shm = wl_registry_bind(registry, name,
&wl_shm_interface, 1);
} else if (strcmp(interface, wl_seat_interface.name) == 0) {
struct wl_seat *seat = wl_registry_bind(
registry, name, &wl_seat_interface, 1);
wl_seat_add_listener(seat, &seat_listener, state);
} else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
state->layer_shell = wl_registry_bind(
registry, name, &zwlr_layer_shell_v1_interface, 1);
} else if (strcmp(interface, wl_output_interface.name) == 0) {
struct swaylock_context *context =
calloc(1, sizeof(struct swaylock_context));
context->state = state;
context->output = wl_registry_bind(registry, name,
&wl_output_interface, 1);
wl_list_insert(&state->contexts, &context->link);
}
}
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,
};
static struct swaylock_state state;
static void sigalarm_handler(int sig) {
signal(SIGALRM, SIG_IGN);
// TODO: Hide typing indicator
signal(SIGALRM, sigalarm_handler);
}
int main(int argc, char **argv) {
signal(SIGALRM, sigalarm_handler);
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"color", required_argument, NULL, 'c'},
{"image", required_argument, NULL, 'i'},
{"scaling", required_argument, NULL, 's'},
{"tiling", no_argument, NULL, 't'},
{"version", no_argument, NULL, 'v'},
{"socket", required_argument, NULL, 'p'},
{"no-unlock-indicator", no_argument, NULL, 'u'},
{"daemonize", no_argument, NULL, 'f'},
{0, 0, 0, 0}
};
const char *usage =
"Usage: swaylock [options...]\n"
"\n"
" -h, --help Show help message and quit.\n"
" -c, --color <rrggbb[aa]> Turn the screen into the given color instead of white.\n"
" -s, --scaling Scaling mode: stretch, fill, fit, center, tile.\n"
" -t, --tiling Same as --scaling=tile.\n"
" -v, --version Show the version number and quit.\n"
" -i, --image [<output>:]<path> Display the given image.\n"
" -u, --no-unlock-indicator Disable the unlock indicator.\n"
" -f, --daemonize Detach from the controlling terminal.\n"
" --socket <socket> Use the specified socket.\n";
struct swaylock_args args = {
.mode = BACKGROUND_MODE_SOLID_COLOR,
.color = 0xFFFFFFFF,
.show_indicator = true,
};
state.args = args;
wlr_log_init(L_DEBUG, NULL);
int c;
while (1) {
int option_index = 0;
c = getopt_long(argc, argv, "hc:i:s:tvuf", long_options, &option_index);
if (c == -1) {
break;
}
switch (c) {
case 'c': {
state.args.color = parse_color(optarg);
state.args.mode = BACKGROUND_MODE_SOLID_COLOR;
break;
}
case 'i':
// TODO
return 1;
case 's':
state.args.mode = parse_background_mode(optarg);
if (state.args.mode == BACKGROUND_MODE_INVALID) {
return 1;
}
break;
case 't':
// TODO
break;
case 'v':
#if defined SWAY_GIT_VERSION && defined SWAY_GIT_BRANCH && defined SWAY_VERSION_DATE
fprintf(stdout, "swaylock version %s (%s, branch \"%s\")\n",
SWAY_GIT_VERSION, SWAY_VERSION_DATE, SWAY_GIT_BRANCH);
#else
fprintf(stdout, "version unknown\n");
#endif
return 0;
case 'u':
state.args.show_indicator = false;
break;
case 'f':
daemonize();
break;
default:
fprintf(stderr, "%s", usage);
return 1;
}
}
wl_list_init(&state.contexts);
state.xkb.context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
assert(state.display = wl_display_connect(NULL));
struct wl_registry *registry = wl_display_get_registry(state.display);
wl_registry_add_listener(registry, &registry_listener, &state);
wl_display_roundtrip(state.display);
assert(state.compositor && state.layer_shell && state.shm);
if (wl_list_empty(&state.contexts)) {
wlr_log(L_DEBUG, "Exiting - no outputs to show on.");
return 0;
}
struct swaylock_context *context;
wl_list_for_each(context, &state.contexts, link) {
assert(context->surface =
wl_compositor_create_surface(state.compositor));
context->layer_surface = zwlr_layer_shell_v1_get_layer_surface(
state.layer_shell, context->surface, context->output,
ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY, "lockscreen");
assert(context->layer_surface);
zwlr_layer_surface_v1_set_size(context->layer_surface, 0, 0);
zwlr_layer_surface_v1_set_anchor(context->layer_surface,
ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM |
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT);
zwlr_layer_surface_v1_set_exclusive_zone(context->layer_surface, -1);
zwlr_layer_surface_v1_set_keyboard_interactivity(
context->layer_surface, true);
zwlr_layer_surface_v1_add_listener(context->layer_surface,
&layer_surface_listener, context);
wl_surface_commit(context->surface);
wl_display_roundtrip(state.display);
}
state.run_display = true;
while (wl_display_dispatch(state.display) != -1 && state.run_display) {
// This space intentionally left blank
}
return 0;
}