284 lines
8.8 KiB
C
284 lines
8.8 KiB
C
#define _POSIX_C_SOURCE 200112L
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#define _XOPEN_SOURCE 500
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#include <GLES2/gl2.h>
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#include <getopt.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <time.h>
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#include <unistd.h>
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#include <wayland-server-protocol.h>
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#include <wayland-server.h>
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#include <wlr/backend.h>
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#include <wlr/backend/session.h>
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#include <wlr/render/wlr_renderer.h>
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#include <wlr/types/wlr_keyboard.h>
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#include <wlr/types/wlr_output.h>
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#include <wlr/types/wlr_output_layout.h>
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#include <wlr/types/wlr_input_device.h>
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#include <wlr/types/wlr_matrix.h>
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#include <wlr/util/log.h>
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#include <xkbcommon/xkbcommon.h>
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#include "cat.h"
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struct sample_state {
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struct wl_display *display;
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struct wl_listener new_output;
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struct wl_listener new_input;
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struct timespec last_frame;
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struct wlr_renderer *renderer;
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struct wlr_texture *cat_texture;
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struct wl_list outputs;
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enum wl_output_transform transform;
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};
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struct sample_output {
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struct sample_state *sample;
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struct wlr_output *output;
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struct wl_listener frame;
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struct wl_listener destroy;
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float x_offs, y_offs;
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float x_vel, y_vel;
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struct wl_list link;
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};
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struct sample_keyboard {
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struct sample_state *sample;
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struct wlr_input_device *device;
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struct wl_listener key;
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struct wl_listener destroy;
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};
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static void output_frame_notify(struct wl_listener *listener, void *data) {
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struct sample_output *sample_output = wl_container_of(listener, sample_output, frame);
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struct sample_state *sample = sample_output->sample;
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struct wlr_output *wlr_output = sample_output->output;
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struct timespec now;
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clock_gettime(CLOCK_MONOTONIC, &now);
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int32_t width, height;
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wlr_output_effective_resolution(wlr_output, &width, &height);
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wlr_output_make_current(wlr_output, NULL);
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wlr_renderer_begin(sample->renderer, wlr_output->width, wlr_output->height);
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wlr_renderer_clear(sample->renderer, (float[]){0.25f, 0.25f, 0.25f, 1});
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for (int y = -128 + (int)sample_output->y_offs; y < height; y += 128) {
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for (int x = -128 + (int)sample_output->x_offs; x < width; x += 128) {
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wlr_render_texture(sample->renderer, sample->cat_texture,
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wlr_output->transform_matrix, x, y, 1.0f);
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}
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}
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wlr_renderer_end(sample->renderer);
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wlr_output_swap_buffers(wlr_output, NULL, NULL);
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long ms = (now.tv_sec - sample->last_frame.tv_sec) * 1000 +
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(now.tv_nsec - sample->last_frame.tv_nsec) / 1000000;
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float seconds = ms / 1000.0f;
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sample_output->x_offs += sample_output->x_vel * seconds;
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sample_output->y_offs += sample_output->y_vel * seconds;
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if (sample_output->x_offs > 128) {
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sample_output->x_offs = 0;
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}
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if (sample_output->y_offs > 128) {
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sample_output->y_offs = 0;
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}
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sample->last_frame = now;
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}
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static void update_velocities(struct sample_state *sample,
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float x_diff, float y_diff) {
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struct sample_output *sample_output;
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wl_list_for_each(sample_output, &sample->outputs, link) {
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sample_output->x_vel += x_diff;
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sample_output->y_vel += y_diff;
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}
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}
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void output_remove_notify(struct wl_listener *listener, void *data) {
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struct sample_output *sample_output = wl_container_of(listener, sample_output, destroy);
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wl_list_remove(&sample_output->frame.link);
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wl_list_remove(&sample_output->destroy.link);
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free(sample_output);
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}
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void new_output_notify(struct wl_listener *listener, void *data) {
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struct wlr_output *output = data;
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struct sample_state *sample = wl_container_of(listener, sample, new_output);
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struct sample_output *sample_output = calloc(1, sizeof(struct sample_output));
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if (wl_list_length(&output->modes) > 0) {
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struct wlr_output_mode *mode = wl_container_of((&output->modes)->prev, mode, link);
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wlr_output_set_mode(output, mode);
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}
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sample_output->x_offs = sample_output->y_offs = 0;
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sample_output->x_vel = sample_output->y_vel = 128;
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wlr_output_set_transform(output, sample->transform);
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sample_output->output = output;
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sample_output->sample = sample;
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wl_signal_add(&output->events.frame, &sample_output->frame);
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sample_output->frame.notify = output_frame_notify;
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wl_signal_add(&output->events.destroy, &sample_output->destroy);
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sample_output->destroy.notify = output_remove_notify;
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wl_list_insert(&sample->outputs, &sample_output->link);
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}
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void keyboard_key_notify(struct wl_listener *listener, void *data) {
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struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, key);
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struct sample_state *sample = keyboard->sample;
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struct wlr_event_keyboard_key *event = data;
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uint32_t keycode = event->keycode + 8;
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const xkb_keysym_t *syms;
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int nsyms = xkb_state_key_get_syms(keyboard->device->keyboard->xkb_state,
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keycode, &syms);
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for (int i = 0; i < nsyms; i++) {
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xkb_keysym_t sym = syms[i];
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if (sym == XKB_KEY_Escape) {
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wl_display_terminate(sample->display);
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}
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if (event->state == WLR_KEY_PRESSED) {
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switch (sym) {
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case XKB_KEY_Left:
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update_velocities(sample, -16, 0);
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break;
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case XKB_KEY_Right:
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update_velocities(sample, 16, 0);
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break;
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case XKB_KEY_Up:
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update_velocities(sample, 0, -16);
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break;
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case XKB_KEY_Down:
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update_velocities(sample, 0, 16);
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break;
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}
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}
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}
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}
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void keyboard_destroy_notify(struct wl_listener *listener, void *data) {
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struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, destroy);
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wl_list_remove(&keyboard->destroy.link);
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wl_list_remove(&keyboard->key.link);
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free(keyboard);
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}
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void new_input_notify(struct wl_listener *listener, void *data) {
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struct wlr_input_device *device = data;
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struct sample_state *sample = wl_container_of(listener, sample, new_input);
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struct sample_keyboard *keyboard;
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struct xkb_rule_names rules;
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struct xkb_context *context;
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switch (device->type) {
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case WLR_INPUT_DEVICE_KEYBOARD:
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keyboard = calloc(1, sizeof(struct sample_keyboard));
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keyboard->device = device;
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keyboard->sample = sample;
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wl_signal_add(&device->events.destroy, &keyboard->destroy);
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keyboard->destroy.notify = keyboard_destroy_notify;
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wl_signal_add(&device->keyboard->events.key, &keyboard->key);
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keyboard->key.notify = keyboard_key_notify;
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memset(&rules, 0, sizeof(rules));
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rules.rules = getenv("XKB_DEFAULT_RULES");
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rules.model = getenv("XKB_DEFAULT_MODEL");
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rules.layout = getenv("XKB_DEFAULT_LAYOUT");
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rules.variant = getenv("XKB_DEFAULT_VARIANT");
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rules.options = getenv("XKB_DEFAULT_OPTIONS");
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context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
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if (!context) {
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wlr_log(L_ERROR, "Failed to create XKB context");
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exit(1);
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}
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wlr_keyboard_set_keymap(device->keyboard, xkb_map_new_from_names(context,
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&rules, XKB_KEYMAP_COMPILE_NO_FLAGS));
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xkb_context_unref(context);
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break;
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default:
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break;
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}
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}
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int main(int argc, char *argv[]) {
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int c;
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enum wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL;
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while ((c = getopt(argc, argv, "r:")) != -1) {
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switch (c) {
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case 'r':
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if (strcmp(optarg, "90") == 0) {
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transform = WL_OUTPUT_TRANSFORM_90;
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} else if (strcmp(optarg, "180") == 0) {
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transform = WL_OUTPUT_TRANSFORM_180;
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} else if (strcmp(optarg, "270") == 0) {
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transform = WL_OUTPUT_TRANSFORM_270;
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} else if (strcmp(optarg, "flipped") == 0) {
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transform = WL_OUTPUT_TRANSFORM_FLIPPED;
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} else if (strcmp(optarg, "flipped-90") == 0) {
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transform = WL_OUTPUT_TRANSFORM_FLIPPED_90;
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} else if (strcmp(optarg, "flipped-180") == 0) {
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transform = WL_OUTPUT_TRANSFORM_FLIPPED_180;
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} else if (strcmp(optarg, "flipped-270") == 0) {
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transform = WL_OUTPUT_TRANSFORM_FLIPPED_270;
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} else {
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wlr_log(L_ERROR, "got unknown transform value: %s", optarg);
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}
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break;
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default:
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break;
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}
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}
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wlr_log_init(L_DEBUG, NULL);
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struct wl_display *display = wl_display_create();
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struct sample_state state = {
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.display = display,
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.transform = transform
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};
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wl_list_init(&state.outputs);
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struct wlr_backend *wlr = wlr_backend_autocreate(display);
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if (!wlr) {
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exit(1);
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}
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wl_signal_add(&wlr->events.new_output, &state.new_output);
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state.new_output.notify = new_output_notify;
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wl_signal_add(&wlr->events.new_input, &state.new_input);
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state.new_input.notify = new_input_notify;
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clock_gettime(CLOCK_MONOTONIC, &state.last_frame);
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const char *socket = wl_display_add_socket_auto(display);
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if (!socket) {
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wlr_log_errno(L_ERROR, "Unable to open wayland socket");
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wlr_backend_destroy(wlr);
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exit(1);
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}
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setenv("_WAYLAND_DISPLAY", socket, true);
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state.renderer = wlr_backend_get_renderer(wlr);
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if (!state.renderer) {
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wlr_log(L_ERROR, "Could not start compositor, OOM");
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wlr_backend_destroy(wlr);
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exit(EXIT_FAILURE);
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}
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state.cat_texture = wlr_texture_from_pixels(state.renderer,
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WL_SHM_FORMAT_ABGR8888, cat_tex.width * 4, cat_tex.width, cat_tex.height,
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cat_tex.pixel_data);
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if (!state.cat_texture) {
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wlr_log(L_ERROR, "Could not start compositor, OOM");
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exit(EXIT_FAILURE);
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}
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if (!wlr_backend_start(wlr)) {
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wlr_log(L_ERROR, "Failed to start backend");
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wlr_backend_destroy(wlr);
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exit(1);
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}
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wl_display_run(display);
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wlr_texture_destroy(state.cat_texture);
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wlr_renderer_destroy(state.renderer);
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wl_display_destroy(display);
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}
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