#pragma once
#include <pebble.h>

typedef enum {
  TOUCH_SWIPE_LEFT,
  TOUCH_SWIPE_RIGHT
} TouchSwipeDir;

typedef struct {
  void (*on_tap)(GPoint point, void *ctx);
  void (*on_hold)(GPoint point, void *ctx);
  void (*on_swipe)(TouchSwipeDir dir, void *ctx);
  void (*on_pan_move)(GPoint delta_since_start, void *ctx);
  void (*on_pan_end)(bool cancelled, void *ctx);
  void *ctx;
} TouchHandlers;

void touch_init(void);
void touch_deinit(void);
void touch_attach(Window *window, const TouchHandlers *handlers);
void touch_detach(Window *window);

static inline int16_t touch_menu_row_at(int16_t y, int16_t menu_top, int16_t header_h,
                                        int16_t row_h, int16_t scroll_offset_y) {
  int16_t content_y = (int16_t)(y - menu_top - scroll_offset_y - header_h);
  return content_y < 0 ? -1 : (int16_t)(content_y / row_h);
}