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Diffstat (limited to 'examples/compositor.c')
| -rw-r--r-- | examples/compositor.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/examples/compositor.c b/examples/compositor.c new file mode 100644 index 00000000..54ab5d5f --- /dev/null +++ b/examples/compositor.c @@ -0,0 +1,191 @@ +#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 <wlr/types/wlr_data_device_manager.h> +#include "wlr/types/wlr_compositor.h" +#include <xkbcommon/xkbcommon.h> +#include <wlr/util/log.h> +#include "shared.h" + +// TODO: move to common header? +int os_create_anonymous_file(off_t size); + +struct sample_state { + struct wlr_renderer *renderer; + struct wlr_compositor compositor; + struct wlr_wl_shell *wl_shell; + struct wlr_seat *wl_seat; + struct wlr_xdg_shell_v6 *xdg_shell; + struct wlr_data_device_manager *data_device_manager; + 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); + + if (wl_resource_get_version(handle->keyboard) >= 2) { + wl_keyboard_send_repeat_info(handle->keyboard, 25, 600); + } +} + +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_create(compositor.backend); + if (!state.renderer) { + wlr_log(L_ERROR, "Could not start compositor, OOM"); + exit(EXIT_FAILURE); + } + wl_display_init_shm(compositor.display); + wlr_compositor_init(&state.compositor, compositor.display, state.renderer); + state.wl_shell = wlr_wl_shell_create(compositor.display); + state.xdg_shell = wlr_xdg_shell_v6_create(compositor.display); + state.data_device_manager = wlr_data_device_manager_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; + } + + wl_display_run(compositor.display); + + close(state.keymap_fd); + wlr_seat_destroy(state.wl_seat); + wlr_data_device_manager_destroy(state.data_device_manager); + wlr_xdg_shell_v6_destroy(state.xdg_shell); + wlr_wl_shell_destroy(state.wl_shell); + wlr_compositor_finish(&state.compositor); + wlr_renderer_destroy(state.renderer); + compositor_fini(&compositor); +} |