S&B Volcano vaporizer remote control with Pi Pico W
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menu.h 2.2KB

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  1. /*
  2. * menu.h
  3. *
  4. * Copyright (c) 2023 Thomas Buck (thomas@xythobuz.de)
  5. *
  6. * This program is free software: you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License as published by
  8. * the Free Software Foundation, either version 3 of the License, or
  9. * (at your option) any later version.
  10. *
  11. * This program is distributed in the hope that it will be useful,
  12. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. * GNU General Public License for more details.
  15. *
  16. * See <http://www.gnu.org/licenses/>.
  17. */
  18. #ifndef __MENU_H__
  19. #define __MENU_H__
  20. #include <stdbool.h>
  21. #define MENU_MAX_LINES 5
  22. #define MENU_MAX_LEN (MENU_MAX_LINES * 32)
  23. #define MENU_BOX_HEIGHT(lines, font, space) ((lines * font) + ((lines - 1) * space))
  24. struct menu_state {
  25. int off;
  26. int selection;
  27. int length;
  28. char buff[MENU_MAX_LEN];
  29. int lines;
  30. int y_off;
  31. };
  32. void menu_init(void (*enter)(int),
  33. void (*up)(int),
  34. void (*down)(int),
  35. void (*exit)(void));
  36. void menu_deinit(void);
  37. void menu_run(void (*cb)(struct menu_state *), bool centered);
  38. extern bool menu_got_input;
  39. #define ADD_STATIC_ELEMENT(format, ...) { \
  40. menu->length += 1; \
  41. if (((menu->length - 1) >= menu->off) \
  42. && ((menu->length - 1 - menu->off) < menu->lines)) { \
  43. if ((menu->length - 1) == menu->selection) { \
  44. pos += snprintf(menu->buff + pos, MENU_MAX_LEN - pos, "> "); \
  45. } else { \
  46. pos += snprintf(menu->buff + pos, MENU_MAX_LEN - pos, " "); \
  47. } \
  48. pos += snprintf(menu->buff + pos, MENU_MAX_LEN - pos, \
  49. format __VA_OPT__(,) __VA_ARGS__); \
  50. pos += snprintf(menu->buff + pos, MENU_MAX_LEN - pos, "\n"); \
  51. } \
  52. }
  53. #endif // __MENU_H__