From d3bbfa411be40015ad0ac96e7786e613ec9565bb Mon Sep 17 00:00:00 2001
From: nick black <dankamongmen@gmail.com>
Date: Thu, 18 Feb 2021 02:00:06 -0500
Subject: [PATCH] add ton's sample code PoC #1350

---
 src/poc/1350.c | 118 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/poc/1350.c

diff --git a/src/poc/1350.c b/src/poc/1350.c
new file mode 100644
index 000000000..2193d7bd5
--- /dev/null
+++ b/src/poc/1350.c
@@ -0,0 +1,118 @@
+#include <locale.h>
+#include <notcurses/notcurses.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+static struct ncplane *make_status_line_plane(struct ncplane *std_plane) {
+  struct ncplane_options opts = {0};
+  opts.rows = 1;
+  opts.cols = ncplane_dim_x(std_plane);
+  opts.y = ncplane_dim_y(std_plane) - 1;
+  opts.x = 0;
+
+  nccell c = CELL_CHAR_INITIALIZER(' ');
+  cell_set_bg_rgb8(&c, 0x20, 0x20, 0x20);
+
+  struct ncplane *status_line_plane = ncplane_create(std_plane, &opts);
+  ncplane_set_base_cell(status_line_plane, &c);
+  return status_line_plane;
+}
+
+static void print_status_line(struct ncplane *plane) {
+  ncplane_putstr_aligned(plane, 0, NCALIGN_LEFT, " ?: help");
+}
+
+static void print_help(struct ncplane *plane) {
+  ncplane_erase(plane);
+  ncplane_putstr_aligned(plane, 0, NCALIGN_LEFT,
+                         " g: jump to address   q: quit");
+  ncplane_putstr_aligned(plane, 0, NCALIGN_RIGHT,
+                         "press any key to close help ");
+}
+
+static int query_address(struct notcurses *nc, struct ncplane *plane,
+                         const char *question, uint16_t *address) {
+  int y = 0;
+  int x = strlen(question) + 1;
+  ncplane_translate(plane, NULL, &y, &x);
+
+  ncplane_printf_yx(plane, 0, 1, question);
+  notcurses_cursor_enable(nc, y, x);
+
+  struct ncplane_options plane_opts = {0};
+  plane_opts.rows = 1;
+  plane_opts.cols = 4;
+  plane_opts.y = 0;
+  plane_opts.x = strlen(question) + 1;
+
+  struct ncplane *reader_plane = ncplane_create(plane, &plane_opts);
+
+  struct ncreader_options reader_opts = {0};
+  reader_opts.flags = NCREADER_OPTION_CURSOR;
+
+  struct ncreader *reader = ncreader_create(reader_plane, &reader_opts);
+  notcurses_render(nc);
+
+  char32_t c;
+  struct ncinput input;
+  while ((c = notcurses_getc_blocking(nc, &input)) != NCKEY_ENTER &&
+         c != NCKEY_ESC) {
+    if (('0' <= c && c <= '9') || ('a' <= c && c <= 'f') ||
+        ('A' <= c && c <= 'F') || c == NCKEY_BACKSPACE) {
+      ncreader_offer_input(reader, &input);
+      notcurses_render(nc);
+    }
+  }
+
+  char *contents;
+  ncreader_destroy(reader, &contents);
+  const int is_success =
+      (c != NCKEY_ESC && sscanf(contents, "%4hx", address) == 1) ? 0 : -1;
+
+  free(contents);
+  ncplane_erase(plane);
+
+  return is_success;
+}
+
+int main(void) {
+  setlocale(LC_ALL, "");
+
+  notcurses_options opts = {0};
+  opts.flags = NCOPTION_SUPPRESS_BANNERS;
+
+  struct notcurses *nc;
+  if ((nc = notcurses_core_init(&opts, NULL)) == NULL) {
+    return EXIT_FAILURE;
+  }
+
+  struct ncplane *std_plane = notcurses_stdplane(nc);
+  struct ncplane *status_line_plane = make_status_line_plane(std_plane);
+
+  ncplane_move_top(status_line_plane);
+
+  struct ncinput input = {0};
+  bool quit = false;
+  while (!quit) {
+    print_status_line(status_line_plane);
+    notcurses_render(nc);
+    notcurses_getc_blocking(nc, &input);
+    switch (input.id) {
+    case '?':
+      print_help(status_line_plane);
+      notcurses_render(nc);
+      notcurses_getc_blocking(nc, &input);
+      ncplane_erase(status_line_plane);
+      break;
+    case 'g': {
+      uint16_t address;
+      query_address(nc, status_line_plane, "Jump to address: $", &address);
+    } break;
+    case 'q':
+      quit = true;
+      break;
+    }
+  }
+
+  notcurses_stop(nc);
+}