#ifndef MYWIN_SCROLLBAR_H__
#define MYWIN_SCROLLBAR_H__

#define SCROLLBAR_ITEM_MAXLEN 20

// 定义按键按下的消息
#define SCROLLBAR_PRESSED 0x00000001

typedef struct {
  char *pic_path;
  char txt[SCROLLBAR_ITEM_MAXLEN];
} Scrollbar_ItemStruct;

typedef struct {
  WIN_WindowStruct win;
  int index;
  Scrollbar_ItemStruct *items;
  int itemMaxNum;
  int itemNum;
  int y_step;
  int y_offset;
  uint32_t color_light;
  uint32_t color_dark;

  int x_inertia;     // x方向的惯性
  int y_inertia;     // y方向的惯性
  int num_inertia;   // 惯性数目
  int timer_inertia; // 惯性定时器
} WIN_ScrollbarStruct;

WIN_ScrollbarStruct *WIN_CreatScrollbar(
    WIN_WindowStruct *base,
    void (*msgLoop)(struct _WIN_WindowStruct *win, WIN_MsgStruct *msg), int x,
    int y, int x_size, int y_size);

// 设置条目数
void SCROLLBAR_SetItemNum(WIN_ScrollbarStruct *bar, int itemNum);

// 添加条目
void SCROLLBAR_AddItem(WIN_ScrollbarStruct *bar, char *item, char *pic_path);

// 默认绘制函数
void SCROLLBAR_DefaultPaint(WIN_ScrollbarStruct *bar);

// 默认消息处理函数
void SCROLLBAR_DefaultMsgLoop(WIN_ScrollbarStruct *bar, WIN_MsgStruct *msg);

// 在指定位置弹出菜单
WIN_ScrollbarStruct *SCROLLBAR_SelectItem(WIN_WindowStruct *base, char **item,
                                          int itemNum, int x, int y, int x_size,
                                          int y_size);

WIN_ScrollbarStruct *SCROLLBAR_SelectNum(WIN_WindowStruct *base, int min,
                                         int max, int x, int y, int x_size,
                                         int y_size);

#endif