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#define _POSIX_C_SOURCE 199309L
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <inttypes.h>
#include <unistd.h>
#include <sys/mman.h>
#include <wayland-server.h>
#include <wlr/backend.h>
#include <wlr/backend/session.h>
#include <wlr/render.h>
#include <wlr/render/matrix.h>
#include <wlr/render/gles2.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_surface.h>
#include <wlr/types/wlr_wl_shell.h>
#include <wlr/types/wlr_xdg_shell_v6.h>
#include <wlr/types/wlr_seat.h>
#include <xkbcommon/xkbcommon.h>
#include <wlr/util/log.h>
#include "shared.h"
#include "compositor.h"
// TODO: move to common header?
int os_create_anonymous_file(off_t size);
struct sample_state {
struct wlr_renderer *renderer;
struct wl_compositor_state compositor;
struct wlr_wl_shell *wl_shell;
struct wlr_seat *wl_seat;
struct wlr_xdg_shell_v6 *xdg_shell;
struct wl_resource *focus;
struct wl_listener keyboard_bound;
int keymap_fd;
size_t keymap_size;
uint32_t serial;
};
/*
* Convert timespec to milliseconds
*/
static inline int64_t timespec_to_msec(const struct timespec *a) {
return (int64_t)a->tv_sec * 1000 + a->tv_nsec / 1000000;
}
static void output_frame_handle_surface(struct sample_state *sample,
struct wlr_output *wlr_output, struct timespec *ts,
struct wl_resource *_res) {
struct wlr_surface *surface = wl_resource_get_user_data(_res);
float matrix[16];
float transform[16];
wlr_surface_flush_damage(surface);
if (surface->texture->valid) {
wlr_matrix_translate(&transform, 200, 200, 0);
wlr_surface_get_matrix(surface, &matrix,
&wlr_output->transform_matrix, &transform);
wlr_render_with_matrix(sample->renderer, surface->texture, &matrix);
struct wlr_frame_callback *cb, *cnext;
wl_list_for_each_safe(cb, cnext, &surface->frame_callback_list, link) {
wl_callback_send_done(cb->resource, timespec_to_msec(ts));
wl_resource_destroy(cb->resource);
}
}
}
static void handle_output_frame(struct output_state *output, struct timespec *ts) {
struct compositor_state *state = output->compositor;
struct sample_state *sample = state->data;
struct wlr_output *wlr_output = output->output;
wlr_output_make_current(wlr_output);
wlr_renderer_begin(sample->renderer, wlr_output);
struct wlr_wl_shell_surface *wl_shell_surface;
wl_list_for_each(wl_shell_surface, &sample->wl_shell->surfaces, link) {
output_frame_handle_surface(sample, wlr_output, ts, wl_shell_surface->surface);
}
struct wlr_xdg_surface_v6 *xdg_surface;
wl_list_for_each(xdg_surface, &sample->xdg_shell->surfaces, link) {
output_frame_handle_surface(sample, wlr_output, ts, xdg_surface->surface);
}
wlr_renderer_end(sample->renderer);
wlr_output_swap_buffers(wlr_output);
}
static void handle_keyboard_key(struct keyboard_state *keyboard, uint32_t keycode,
xkb_keysym_t sym, enum wlr_key_state key_state) {
struct compositor_state *state = keyboard->compositor;
struct sample_state *sample = state->data;
struct wl_resource *res = NULL;
struct wlr_seat_handle *seat_handle = NULL;
wl_list_for_each(res, &sample->compositor.surfaces, link) {
break;
}
if (res) {
seat_handle = wlr_seat_handle_for_client(sample->wl_seat,
wl_resource_get_client(res));
}
if (res != sample->focus && seat_handle && seat_handle->keyboard) {
struct wl_array keys;
wl_array_init(&keys);
wl_keyboard_send_enter(seat_handle->keyboard, ++sample->serial, res, &keys);
sample->focus = res;
}
if (seat_handle && seat_handle->keyboard) {
uint32_t depressed = xkb_state_serialize_mods(keyboard->xkb_state,
XKB_STATE_MODS_DEPRESSED);
uint32_t latched = xkb_state_serialize_mods(keyboard->xkb_state,
XKB_STATE_MODS_LATCHED);
uint32_t locked = xkb_state_serialize_mods(keyboard->xkb_state,
XKB_STATE_MODS_LOCKED);
uint32_t group = xkb_state_serialize_layout(keyboard->xkb_state,
XKB_STATE_LAYOUT_EFFECTIVE);
wl_keyboard_send_modifiers(seat_handle->keyboard, ++sample->serial, depressed,
latched, locked, group);
wl_keyboard_send_key(seat_handle->keyboard, ++sample->serial, 0, keycode, key_state);
}
}
static void handle_keyboard_bound(struct wl_listener *listener, void *data) {
struct wlr_seat_handle *handle = data;
struct sample_state *state = wl_container_of(listener, state, keyboard_bound);
wl_keyboard_send_keymap(handle->keyboard, WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1,
state->keymap_fd, state->keymap_size);
}
int main() {
struct sample_state state = { 0 };
struct compositor_state compositor = { 0,
.data = &state,
.output_frame_cb = handle_output_frame,
.keyboard_key_cb = handle_keyboard_key
};
compositor_init(&compositor);
state.renderer = wlr_gles2_renderer_init(compositor.backend);
if (!state.renderer) {
wlr_log(L_ERROR, "Could not start compositor, OOM");
exit(EXIT_FAILURE);
}
wl_display_init_shm(compositor.display);
wl_compositor_init(compositor.display, &state.compositor, state.renderer);
state.wl_shell = wlr_wl_shell_create(compositor.display);
state.xdg_shell = wlr_xdg_shell_v6_create(compositor.display);
state.wl_seat = wlr_seat_create(compositor.display, "seat0");
state.keyboard_bound.notify = handle_keyboard_bound;
wl_signal_add(&state.wl_seat->events.keyboard_bound, &state.keyboard_bound);
wlr_seat_set_capabilities(state.wl_seat, WL_SEAT_CAPABILITY_KEYBOARD
| WL_SEAT_CAPABILITY_POINTER | WL_SEAT_CAPABILITY_TOUCH);
struct keyboard_state *kbstate;
wl_list_for_each(kbstate, &compositor.keyboards, link) {
char *keymap = xkb_keymap_get_as_string(kbstate->keymap,
XKB_KEYMAP_FORMAT_TEXT_V1);
state.keymap_size = strlen(keymap);
state.keymap_fd = os_create_anonymous_file(state.keymap_size);
void *ptr = mmap(NULL, state.keymap_size,
PROT_READ | PROT_WRITE,
MAP_SHARED, state.keymap_fd, 0);
strcpy(ptr, keymap);
free(keymap);
break;
}
compositor_run(&compositor);
wlr_wl_shell_destroy(state.wl_shell);
wlr_xdg_shell_v6_destroy(state.xdg_shell);
close(state.keymap_fd);
}
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