fbconscroll PoC

src/poc/fbconscroll.c

@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <notcurses/notcurses.h>
+
+int main(int argc, char** argv){
+  int rows = 1;
+  if(argc > 2){
+    fprintf(stderr, "usage: fbconscroll [rows]\n");
+    return EXIT_FAILURE;
+  }else if(argc == 2){
+    rows = atoi(argv[1]);
+    if(rows < 1){
+      fprintf(stderr, "usage: fbconscroll [rows]\n");
+      return EXIT_FAILURE;
+    }
+  }
+  struct notcurses_options nopts = {
+    .flags = NCOPTION_NO_ALTERNATE_SCREEN
+             | NCOPTION_NO_CLEAR_BITMAPS
+             | NCOPTION_SUPPRESS_BANNERS
+             | NCOPTION_NO_FONT_CHANGES
+             | NCOPTION_PRESERVE_CURSOR,
+  };
+  struct notcurses* nc = notcurses_init(&nopts, NULL);
+  if(nc == NULL){
+    return EXIT_FAILURE;
+  }
+  int dimy, dimx;
+  struct ncplane* n = notcurses_stddim_yx(nc, &dimy, &dimx);
+  ncplane_set_scrolling(n, true);
+  for(int i = 0 ; i < rows ; ++i){
+    int r;
+    if((r = ncplane_putchar(n, '\n')) != 0){
+      notcurses_stop(nc);
+      fprintf(stderr, "RET: %d\n", r);
+      return EXIT_FAILURE;
+    }
+  }
+  notcurses_render(nc);
+  notcurses_stop(nc);
+  return EXIT_SUCCESS;
+}