sway/wayland/registry.c

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C
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#include <wayland-client.h>
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#include <xkbcommon/xkbcommon.h>
#include <stdlib.h>
#include <string.h>
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#include <unistd.h>
#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/timerfd.h>
#include "wayland-desktop-shell-client-protocol.h"
#include "wayland-swaylock-client-protocol.h"
#include "client/registry.h"
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#include "stringop.h"
#include "log.h"
static void display_handle_mode(void *data, struct wl_output *wl_output,
uint32_t flags, int32_t width, int32_t height, int32_t refresh) {
struct output_state *state = data;
if (flags & WL_OUTPUT_MODE_CURRENT) {
state->flags = flags;
state->width = width;
state->height = height;
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sway_log(L_DEBUG, "Got mode %dx%d:0x%X for output %p",
width, height, flags, data);
}
}
static void display_handle_geometry(void *data, struct wl_output *wl_output,
int32_t x, int32_t y, int32_t physical_width, int32_t physical_height,
int32_t subpixel, const char *make, const char *model, int32_t transform) {
// this space intentionally left blank
}
static void display_handle_done(void *data, struct wl_output *wl_output) {
// this space intentionally left blank
}
static void display_handle_scale(void *data, struct wl_output *wl_output, int32_t factor) {
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struct output_state *state = data;
state->scale = factor;
sway_log(L_DEBUG, "Got scale factor %d for output %p", factor, data);
}
static const struct wl_output_listener output_listener = {
.mode = display_handle_mode,
.geometry = display_handle_geometry,
.done = display_handle_done,
.scale = display_handle_scale
};
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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",
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};
const enum mod_bit XKB_MODS[MASK_LAST] = {
MOD_SHIFT,
MOD_CAPS,
MOD_CTRL,
MOD_ALT,
MOD_MOD2,
MOD_MOD3,
MOD_LOGO,
MOD_MOD5
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};
static void keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
uint32_t format, int fd, uint32_t size) {
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// Keyboard errors are abort-worthy because you wouldn't be able to unlock your screen otherwise.
struct registry *registry = data;
if (!data) {
close(fd);
return;
}
if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
close(fd);
sway_abort("Unknown keymap format %d, aborting", format);
}
char *map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
if (map_str == MAP_FAILED) {
close(fd);
sway_abort("Unable to initialized shared keyboard memory, aborting");
}
struct xkb_keymap *keymap = xkb_keymap_new_from_string(registry->input->xkb.context,
map_str, XKB_KEYMAP_FORMAT_TEXT_V1, 0);
munmap(map_str, size);
close(fd);
if (!keymap) {
sway_abort("Failed to compile keymap, aborting");
}
struct xkb_state *state = xkb_state_new(keymap);
if (!state) {
xkb_keymap_unref(keymap);
sway_abort("Failed to create xkb state, aborting");
}
xkb_keymap_unref(registry->input->xkb.keymap);
xkb_state_unref(registry->input->xkb.state);
registry->input->xkb.keymap = keymap;
registry->input->xkb.state = state;
int i;
for (i = 0; i < MASK_LAST; ++i) {
registry->input->xkb.masks[i] = 1 << xkb_keymap_mod_get_index(registry->input->xkb.keymap, XKB_MASK_NAMES[i]);
}
}
static void keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
uint32_t serial, struct wl_surface *surface, struct wl_array *keys) {
// this space intentionally left blank
}
static void keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
uint32_t serial, struct wl_surface *surface) {
// this space intentionally left blank
}
static void keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
uint32_t serial, uint32_t time, uint32_t key, uint32_t state_w) {
struct registry *registry = data;
enum wl_keyboard_key_state state = state_w;
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if (!registry->input->xkb.state) {
return;
}
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xkb_keysym_t sym = xkb_state_key_get_one_sym(registry->input->xkb.state, key + 8);
registry->input->sym = (state == WL_KEYBOARD_KEY_STATE_PRESSED ? sym : XKB_KEY_NoSymbol);
registry->input->code = (state == WL_KEYBOARD_KEY_STATE_PRESSED ? key + 8 : 0);
uint32_t codepoint = xkb_state_key_get_utf32(registry->input->xkb.state, registry->input->code);
if (registry->input->notify) {
registry->input->notify(state, sym, key, codepoint);
}
}
static void keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
uint32_t serial, uint32_t mods_depressed, uint32_t mods_latched,
uint32_t mods_locked, uint32_t group) {
struct registry *registry = data;
if (!registry->input->xkb.keymap) {
return;
}
xkb_state_update_mask(registry->input->xkb.state, mods_depressed, mods_latched, mods_locked, 0, 0, group);
xkb_mod_mask_t mask = xkb_state_serialize_mods(registry->input->xkb.state,
XKB_STATE_MODS_DEPRESSED | XKB_STATE_MODS_LATCHED);
registry->input->modifiers = 0;
for (uint32_t i = 0; i < MASK_LAST; ++i) {
if (mask & registry->input->xkb.masks[i]) {
registry->input->modifiers |= XKB_MODS[i];
}
}
}
static void keyboard_handle_repeat_info(void *data, struct wl_keyboard *keyboard,
int32_t rate, int32_t delay) {
// this space intentionally left blank
}
static const struct wl_keyboard_listener keyboard_listener = {
.keymap = keyboard_handle_keymap,
.enter = keyboard_handle_enter,
.leave = keyboard_handle_leave,
.key = keyboard_handle_key,
.modifiers = keyboard_handle_modifiers,
.repeat_info = keyboard_handle_repeat_info
};
static void seat_handle_capabilities(void *data, struct wl_seat *seat,
enum wl_seat_capability caps) {
struct registry *reg = data;
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if ((caps & WL_SEAT_CAPABILITY_POINTER) && !reg->pointer) {
reg->pointer = wl_seat_get_pointer(reg->seat);
} else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && reg->pointer) {
wl_pointer_destroy(reg->pointer);
reg->pointer = NULL;
}
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !reg->keyboard) {
reg->keyboard = wl_seat_get_keyboard(reg->seat);
wl_keyboard_add_listener(reg->keyboard, &keyboard_listener, reg);
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} else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && reg->keyboard) {
wl_keyboard_destroy(reg->keyboard);
reg->keyboard = NULL;
}
}
static void seat_handle_name(void *data, struct wl_seat *seat, const char *name) {
// this space intentionally left blank
}
static const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
.name = seat_handle_name,
};
static void registry_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version) {
struct registry *reg = data;
if (strcmp(interface, wl_compositor_interface.name) == 0) {
reg->compositor = wl_registry_bind(registry, name, &wl_compositor_interface, version);
} else if (strcmp(interface, wl_shm_interface.name) == 0) {
reg->shm = wl_registry_bind(registry, name, &wl_shm_interface, version);
} else if (strcmp(interface, wl_shell_interface.name) == 0) {
reg->shell = wl_registry_bind(registry, name, &wl_shell_interface, version);
} else if (strcmp(interface, wl_seat_interface.name) == 0) {
reg->seat = wl_registry_bind(registry, name, &wl_seat_interface, version);
wl_seat_add_listener(reg->seat, &seat_listener, reg);
} else if (strcmp(interface, wl_output_interface.name) == 0) {
struct wl_output *output = wl_registry_bind(registry, name, &wl_output_interface, version);
struct output_state *ostate = malloc(sizeof(struct output_state));
ostate->output = output;
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ostate->scale = 1;
wl_output_add_listener(output, &output_listener, ostate);
list_add(reg->outputs, ostate);
} else if (strcmp(interface, desktop_shell_interface.name) == 0) {
reg->desktop_shell = wl_registry_bind(registry, name, &desktop_shell_interface, version);
} else if (strcmp(interface, lock_interface.name) == 0) {
reg->swaylock = wl_registry_bind(registry, name, &lock_interface, version);
}
}
static void registry_global_remove(void *data, struct wl_registry *registry, uint32_t name) {
// this space intentionally left blank
}
static const struct wl_registry_listener registry_listener = {
.global = registry_global,
.global_remove = registry_global_remove
};
struct registry *registry_poll(void) {
struct registry *registry = malloc(sizeof(struct registry));
memset(registry, 0, sizeof(struct registry));
registry->outputs = create_list();
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registry->input = calloc(sizeof(struct input), 1);
registry->input->xkb.context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
registry->display = wl_display_connect(NULL);
if (!registry->display) {
sway_log(L_ERROR, "Error opening display");
registry_teardown(registry);
return NULL;
}
struct wl_registry *reg = wl_display_get_registry(registry->display);
wl_registry_add_listener(reg, &registry_listener, registry);
wl_display_dispatch(registry->display);
wl_display_roundtrip(registry->display);
wl_registry_destroy(reg);
return registry;
}
void registry_teardown(struct registry *registry) {
if (registry->pointer) {
wl_pointer_destroy(registry->pointer);
}
if (registry->seat) {
wl_seat_destroy(registry->seat);
}
if (registry->shell) {
wl_shell_destroy(registry->shell);
}
if (registry->shm) {
wl_shm_destroy(registry->shm);
}
if (registry->compositor) {
wl_compositor_destroy(registry->compositor);
}
if (registry->display) {
wl_display_disconnect(registry->display);
}
if (registry->outputs) {
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free_flat_list(registry->outputs);
}
free(registry);
}