lv_roller.h

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#ifndef LV_ROLLER_H
#define LV_ROLLER_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*********************
 *      INCLUDES
 *********************/
#include "../lv_conf_internal.h"
 
#if LV_USE_ROLLER != 0
 
/*Testing of dependencies*/
#if LV_USE_LABEL == 0
#error "lv_roller: lv_label is required. Enable it in lv_conf.h (LV_USE_ROLLER 1)"
#endif
 
#include "../core/lv_obj.h"
#include "lv_label.h"
 
/*********************
 *      DEFINES
 *********************/
 
/**********************
 *      TYPEDEFS
 **********************/
 
enum {
    LV_ROLLER_MODE_NORMAL, 
    LV_ROLLER_MODE_INFINITE, 
};
 
typedef uint8_t lv_roller_mode_t;
 
typedef struct {
    lv_obj_t obj;
    uint16_t option_cnt;          
    uint16_t sel_opt_id;          
    uint16_t sel_opt_id_ori;      
    lv_roller_mode_t mode : 1;
    uint32_t moved : 1;
} lv_roller_t;
 
extern const lv_obj_class_t lv_roller_class;
 
 
/**********************
 * GLOBAL PROTOTYPES
 **********************/
 
lv_obj_t * lv_roller_create(lv_obj_t * parent);
 
/*=====================
 * Setter functions
 *====================*/
 
void lv_roller_set_options(lv_obj_t * obj, const char * options, lv_roller_mode_t mode);
 
void lv_roller_set_selected(lv_obj_t * obj, uint16_t sel_opt, lv_anim_enable_t anim);
 
void lv_roller_set_visible_row_count(lv_obj_t * obj, uint8_t row_cnt);
 
/*=====================
 * Getter functions
 *====================*/
 
uint16_t lv_roller_get_selected(const lv_obj_t * obj);
 
void lv_roller_get_selected_str(const lv_obj_t * obj, char * buf, uint32_t buf_size);
 
 
const char * lv_roller_get_options(const lv_obj_t * obj);
 
uint16_t lv_roller_get_option_cnt(const lv_obj_t * obj);
 
/**********************
 *      MACROS
 **********************/
 
#endif /*LV_USE_ROLLER*/
 
#ifdef __cplusplus
} /*extern "C"*/
#endif
 
#endif /*LV_ROLLER_H*/