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/**
* @file lv_bar.h
*
*/
#ifndef LV_BAR_H
#define LV_BAR_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#ifdef LV_CONF_INCLUDE_SIMPLE
#include "lv_conf.h"
#else
#include "../../../lv_conf.h"
#endif
#if LV_USE_BAR != 0
#include "../lv_core/lv_obj.h"
#include "../lv_misc/lv_anim.h"
#include "lv_cont.h"
#include "lv_btn.h"
#include "lv_label.h"
/*********************
* DEFINES
*********************/
/** Bar animation start value. (Not the real value of the Bar just indicates process animation)*/
#define LV_BAR_ANIM_STATE_START 0
/** Bar animation end value. (Not the real value of the Bar just indicates process animation)*/
#define LV_BAR_ANIM_STATE_END 256
/** Mark no animation is in progress */
#define LV_BAR_ANIM_STATE_INV -1
/** log2(LV_BAR_ANIM_STATE_END) used to normalize data*/
#define LV_BAR_ANIM_STATE_NORM 8
LV_EXPORT_CONST_INT(LV_BAR_ANIM_STATE_START);
LV_EXPORT_CONST_INT(LV_BAR_ANIM_STATE_END);
LV_EXPORT_CONST_INT(LV_BAR_ANIM_STATE_INV);
LV_EXPORT_CONST_INT(LV_BAR_ANIM_STATE_NORM);
/**********************
* TYPEDEFS
**********************/
/** Data of bar*/
typedef struct
{
/*No inherited ext, derived from the base object */
/*New data for this type */
int16_t cur_value; /*Current value of the bar*/
int16_t min_value; /*Minimum value of the bar*/
int16_t max_value; /*Maximum value of the bar*/
#if LV_USE_ANIMATION
lv_anim_value_t anim_start;
lv_anim_value_t anim_end;
lv_anim_value_t anim_state;
lv_anim_value_t anim_time;
#endif
uint8_t sym : 1; /*Symmetric: means the center is around zero value*/
const lv_style_t * style_indic; /*Style of the indicator*/
} lv_bar_ext_t;
/** Bar styles. */
enum {
LV_BAR_STYLE_BG, /** Bar background style. */
LV_BAR_STYLE_INDIC, /** Bar fill area style. */
};
typedef uint8_t lv_bar_style_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Create a bar objects
* @param par pointer to an object, it will be the parent of the new bar
* @param copy pointer to a bar object, if not NULL then the new object will be copied from it
* @return pointer to the created bar
*/
lv_obj_t * lv_bar_create(lv_obj_t * par, const lv_obj_t * copy);
/*=====================
* Setter functions
*====================*/
/**
* Set a new value on the bar
* @param bar pointer to a bar object
* @param value new value
* @param anim LV_ANIM_ON: set the value with an animation; LV_ANIM_OFF: change the value immediately
*/
void lv_bar_set_value(lv_obj_t * bar, int16_t value, lv_anim_enable_t anim);
/**
* Set minimum and the maximum values of a bar
* @param bar pointer to the bar object
* @param min minimum value
* @param max maximum value
*/
void lv_bar_set_range(lv_obj_t * bar, int16_t min, int16_t max);
/**
* Make the bar symmetric to zero. The indicator will grow from zero instead of the minimum
* position.
* @param bar pointer to a bar object
* @param en true: enable disable symmetric behavior; false: disable
*/
void lv_bar_set_sym(lv_obj_t * bar, bool en);
/**
* Set the animation time of the bar
* @param bar pointer to a bar object
* @param anim_time the animation time in milliseconds.
*/
void lv_bar_set_anim_time(lv_obj_t * bar, uint16_t anim_time);
/**
* Set a style of a bar
* @param bar pointer to a bar object
* @param type which style should be set
* @param style pointer to a style
*/
void lv_bar_set_style(lv_obj_t * bar, lv_bar_style_t type, const lv_style_t * style);
/*=====================
* Getter functions
*====================*/
/**
* Get the value of a bar
* @param bar pointer to a bar object
* @return the value of the bar
*/
int16_t lv_bar_get_value(const lv_obj_t * bar);
/**
* Get the minimum value of a bar
* @param bar pointer to a bar object
* @return the minimum value of the bar
*/
int16_t lv_bar_get_min_value(const lv_obj_t * bar);
/**
* Get the maximum value of a bar
* @param bar pointer to a bar object
* @return the maximum value of the bar
*/
int16_t lv_bar_get_max_value(const lv_obj_t * bar);
/**
* Get whether the bar is symmetric or not.
* @param bar pointer to a bar object
* @return true: symmetric is enabled; false: disable
*/
bool lv_bar_get_sym(lv_obj_t * bar);
/**
* Get the animation time of the bar
* @param bar pointer to a bar object
* @return the animation time in milliseconds.
*/
uint16_t lv_bar_get_anim_time(lv_obj_t * bar);
/**
* Get a style of a bar
* @param bar pointer to a bar object
* @param type which style should be get
* @return style pointer to a style
*/
const lv_style_t * lv_bar_get_style(const lv_obj_t * bar, lv_bar_style_t type);
/**********************
* MACROS
**********************/
#endif /*LV_USE_BAR*/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_BAR_H*/
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