/* Example program that links against the waymini library.
 * No external dependencies beyond waymini itself and the C standard library.
 */

#include "waymini.h"

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static void on_key(void *user, uint32_t keycode, uint32_t state) {
  (void)user;
  const char *label = state ? "down" : "up  ";
  printf("key %s: %u\n", label, keycode);
  fflush(stdout);
}

int main(void) {
  uint32_t w = 320, h = 200;

  struct waymini *wm = waymini_create(w, h, on_key, NULL);
  if (!wm) return 1;

  printf("surface: %ux%u stride=%u\n",
         waymini_get_width(wm), waymini_get_height(wm), waymini_get_stride(wm));

  uint8_t *pixels = (uint8_t *)waymini_get_pixels(wm);
  if (!pixels) {
    waymini_destroy(wm);
    return 1;
  }

  /* Fill a simple gradient. Each row is stride bytes. */
  for (uint32_t y = 0; y < h; y++) {
    for (uint32_t x = 0; x < w; x++) {
      size_t i = (size_t)y * waymini_get_stride(wm) + (size_t)x * 4;
      pixels[i + 0] = 0x20;                       /* B */
      pixels[i + 1] = (uint8_t)(y * 255 / h);     /* G */
      pixels[i + 2] = (uint8_t)(x * 255 / w);     /* R */
      pixels[i + 3] = 0xff;                       /* A (ignored for XRGB) */
    }
  }

  waymini_present(wm);

  while (!waymini_should_close(wm)) {
    if (waymini_dispatch(wm) < 0) break;
  }

  waymini_destroy(wm);
  return 0;
}