JNIEXPORT void JNICALL
Java_org_zoy_caca_Canvas_canvasRender(JNIEnv *env, jclass cls, jlong ptr, jlong font_ptr,
jbyteArray buf, jint width, jint height, jint pitch)
{
jbyte *elems = (*env)->GetByteArrayElements(env, buf, 0);
caca_render_canvas((caca_canvas_t *)ptr, (caca_font_t *)font_ptr, elems, width, height, pitch);
(*env)->ReleaseByteArrayElements(env, buf, elems, 0);
}
void
_mod_caca_plasma_anim (lw6sys_context_t * sys_context, _mod_caca_context_t * caca_context)
{
if (frame != 0)
{
_increment_frame (sys_context, caca_context, NULL, NULL, NULL);
return;
}
int wc, hc;
caca_canvas_t *cv = NULL;
caca_font_t *f = NULL;
caca_dither_t *d = NULL;
uint8_t *buf = NULL;
char const *const *fonts;
cv = caca_create_canvas (10, 1);
if (cv == NULL)
{
lw6sys_log (sys_context, LW6SYS_LOG_ERROR, _x_ ("Can't create tmp canvas"));
return;
}
hc = caca_get_canvas_height (caca_context->canvas);
wc = caca_get_canvas_width (caca_context->canvas);
_plasma (sys_context, PREPARE, caca_context->canvas);
_plasma (sys_context, INIT, caca_context->canvas);
caca_set_color_ansi (cv, CACA_BLACK, CACA_TRANSPARENT);
caca_put_str (cv, 0, 0, "LiquidWar6");
fonts = caca_get_font_list ();
if (fonts[0] == NULL || fonts[1] == NULL)
{
lw6sys_log (sys_context, LW6SYS_LOG_ERROR, _x_ ("libcaca was compiled without any fonts"));
return;
}
f = caca_load_font (fonts[1], 0);
if (f == NULL)
{
lw6sys_log (sys_context, LW6SYS_LOG_ERROR, _x_ ("could not load font : '%s'"), fonts[0]);
return;
}
buf = malloc (4 * wc * hc);
if (buf == NULL)
return;
caca_render_canvas (cv, f, buf, wc, hc, 4 * wc);
d = caca_create_dither (32, wc, hc, 4 * wc, 0xff00, 0xff0000, 0xff000000, 0xff);
_increment_frame (sys_context, caca_context, f, d, buf);
_mod_caca_splash_free (sys_context, caca_context, f, d, buf, 1);
caca_free_canvas (cv);
}
int main(int argc, char *argv[])
{
caca_canvas_t *cv;
caca_display_t *dp;
caca_font_t *f;
caca_dither_t *d;
uint8_t *buf;
unsigned int w, h;
char const * const * fonts;
/* Create a canvas */
cv = caca_create_canvas(8, 2);
if(cv == NULL)
{
printf("Can't create canvas\n");
return -1;
}
/* Draw stuff on our canvas */
caca_set_color_ansi(cv, CACA_WHITE, CACA_BLACK);
caca_put_str(cv, 0, 0, "ABcde");
caca_set_color_ansi(cv, CACA_LIGHTRED, CACA_BLACK);
caca_put_str(cv, 5, 0, "\\o/");
caca_set_color_ansi(cv, CACA_WHITE, CACA_BLUE);
caca_put_str(cv, 0, 1, "&$âøÿØ?!");
/* Load a libcaca internal font */
fonts = caca_get_font_list();
if(fonts[0] == NULL)
{
fprintf(stderr, "error: libcaca was compiled without any fonts\n");
return -1;
}
f = caca_load_font(fonts[0], 0);
if(f == NULL)
{
fprintf(stderr, "error: could not load font \"%s\"\n", fonts[0]);
return -1;
}
/* Create our bitmap buffer (32-bit ARGB) */
w = caca_get_canvas_width(cv) * caca_get_font_width(f);
h = caca_get_canvas_height(cv) * caca_get_font_height(f);
buf = malloc(4 * w * h);
/* Render the canvas onto our image buffer */
caca_render_canvas(cv, f, buf, w, h, 4 * w);
/* Just for fun, render the image using libcaca */
caca_set_canvas_size(cv, 80, 32);
dp = caca_create_display(cv);
{
#if defined(HAVE_ENDIAN_H)
if(__BYTE_ORDER == __BIG_ENDIAN)
#else
/* This is compile-time optimised with at least -O1 or -Os */
uint32_t const tmp = 0x12345678;
if(*(uint8_t const *)&tmp == 0x12)
#endif
d = caca_create_dither(32, w, h, 4 * w,
0xff0000, 0xff00, 0xff, 0xff000000);
else
d = caca_create_dither(32, w, h, 4 * w,
0xff00, 0xff0000, 0xff000000, 0xff);
}
caca_dither_bitmap(cv, 0, 0, caca_get_canvas_width(cv),
caca_get_canvas_height(cv), d, buf);
caca_refresh_display(dp);
caca_get_event(dp, CACA_EVENT_KEY_PRESS, NULL, -1);
/* Free everything */
caca_free_display(dp);
free(buf);
caca_free_dither(d);
caca_free_font(f);
caca_free_canvas(cv);
return 0;
}
