1 #include "demo.h"
2
qrcode_demo(struct notcurses * nc,uint64_t startns)3 int qrcode_demo(struct notcurses* nc, uint64_t startns){
4 (void)startns;
5 if(!notcurses_canutf8(nc)){
6 return 0;
7 }
8 #ifdef USE_QRCODEGEN
9 char data[128];
10 unsigned dimy, dimx;
11 struct ncplane *stdn = notcurses_stddim_yx(nc, &dimy, &dimx);
12 ncplane_erase(stdn);
13 struct ncplane* n = ncplane_dup(stdn, NULL);
14 for(int i = 0 ; i < 1024 ; ++i){
15 ncplane_erase(n);
16 size_t len = rand() % sizeof(data) + 1;
17 size_t done = 0;
18 // done this tedious way because getrand() doesn't exist on freebsd 11
19 while(done < len){
20 long r = rand();
21 memcpy(data + done, &r, sizeof(r));
22 done += sizeof(r);
23 }
24 ncplane_home(n);
25 unsigned y = dimy, x = dimx;
26 ncplane_home(n);
27 int qlen = ncplane_qrcode(n, &y, &x, data, len);
28 if(qlen > 0){ // FIXME can fail due to being too large for display; distinguish this case
29 ncplane_move_yx(n, (dimy - y) / 2, (dimx - x) / 2);
30 ncplane_home(n);
31 ncplane_set_fg_rgb8(n, rand() % 255 + 1, rand() % 255 + 1, rand() % 255 + 1);
32 DEMO_RENDER(nc);
33 }
34 }
35 ncplane_mergedown_simple(n, stdn); // leave the last one on-screen
36 ncplane_destroy(n);
37 #endif
38 return 0;
39 }
40