code / btui

   1 /*
   2  * This file contains a basic example of BTUI C API usage.
   3  */
   4 
   5 #include <stdio.h>
   6 #include "btui.h"
   7 
   8 int main(void)
   9 {
  10     btui_t *bt = btui_create(BTUI_MODE_TUI);
  11     if (!bt) return 1;
  12     int done = 0;
  13     int x = 1, y = 1;
  14     while (!done) {
  15         const char *title = "BTUI C Demo";
  16         int w = (int)strlen(title);
  17         int center = (bt->width - w) / 2;
  18 
  19         btui_set_attributes(bt, BTUI_FG_BLUE | BTUI_BG_NORMAL);
  20         btui_draw_shadow(bt, center-2, 0, w+4, 3);
  21 
  22         btui_set_attributes(bt, BTUI_BG_BLUE | BTUI_FG_BLACK);
  23         btui_fill_box(bt, center-2, 0, w+4, 3);
  24 
  25         btui_move_cursor(bt, center, 1);
  26         btui_printf(bt, "%s", title);
  27         btui_set_attributes(bt, BTUI_NORMAL);
  28 
  29         btui_set_attributes(bt, BTUI_BOLD);
  30         btui_move_cursor(bt, 0, bt->height-2);
  31         btui_printf(bt, "Press 'q' to quit");
  32         btui_set_attributes(bt, BTUI_NORMAL);
  33 
  34         btui_set_attributes(bt, BTUI_FAINT);
  35         btui_move_cursor(bt, bt->width-16, bt->height-2);
  36         btui_printf(bt, "Size = %dx%d", bt->width, bt->height);
  37         btui_set_attributes(bt, BTUI_NORMAL);
  38 
  39         btui_flush(bt);
  40 
  41         int mouse_x = -1, mouse_y = -1;
  42         int key = btui_getkey(bt, -1, &mouse_x, &mouse_y);
  43         btui_clear(bt, BTUI_CLEAR_SCREEN);
  44         switch (key) {
  45             case 'q': case KEY_CTRL_C: done = 1; break;
  46             case KEY_CTRL_Z:
  47                 btui_suspend(bt);
  48                 break;
  49             case -1: break;
  50             case KEY_ARROW_DOWN:
  51                 btui_scroll(bt, 1, bt->height-1, +1);
  52                 break;
  53             case KEY_ARROW_UP:
  54                 btui_scroll(bt, 1, bt->height-1, -1);
  55                 break;
  56             default: {
  57                 if (mouse_x != -1) {
  58                     x = mouse_x - 15;
  59                     y = mouse_y;
  60                 }
  61                 char buf[256] = {0};
  62                 btui_keyname(key, buf);
  63 
  64                 btui_set_fg_hex(bt, 0xacff40);
  65                 btui_draw_linebox(bt, x, y, 30, 1);
  66 
  67                 btui_move_cursor(bt, x, y);
  68                 btui_set_fg_hex(bt, 0xacff40);
  69                 btui_printf(bt, " Pressed: %s ", buf);
  70 
  71                 btui_set_attributes(bt, BTUI_NORMAL);
  72                 fflush(bt->out);
  73                 break;
  74             }
  75         }
  76     }
  77     btui_disable(bt);
  78     return 0;
  79 }