94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
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/**
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* @file lv_line.h
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*
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*/
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#ifndef LV_LINE_H
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#define LV_LINE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include "../lv_conf_internal.h"
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#if LV_USE_LINE != 0
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#include "../core/lv_obj.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/*Data of line*/
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typedef struct {
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lv_obj_t obj;
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const lv_point_t * point_array; /**< Pointer to an array with the points of the line*/
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uint16_t point_num; /**< Number of points in 'point_array'*/
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uint8_t y_inv : 1; /**< 1: y == 0 will be on the bottom*/
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} lv_line_t;
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extern const lv_obj_class_t lv_line_class;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Create a line object
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* @param parent pointer to an object, it will be the parent of the new line
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* @return pointer to the created line
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*/
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lv_obj_t * lv_line_create(lv_obj_t * parent);
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/*=====================
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* Setter functions
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*====================*/
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/**
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* Set an array of points. The line object will connect these points.
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* @param obj pointer to a line object
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* @param points an array of points. Only the address is saved, so the array needs to be alive while the line exists
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* @param point_num number of points in 'point_a'
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*/
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void lv_line_set_points(lv_obj_t * obj, const lv_point_t points[], uint16_t point_num);
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/**
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* Enable (or disable) the y coordinate inversion.
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* If enabled then y will be subtracted from the height of the object,
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* therefore the y = 0 coordinate will be on the bottom.
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* @param obj pointer to a line object
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* @param en true: enable the y inversion, false:disable the y inversion
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*/
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void lv_line_set_y_invert(lv_obj_t * obj, bool en);
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/*=====================
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* Getter functions
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*====================*/
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/**
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* Get the y inversion attribute
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* @param obj pointer to a line object
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* @return true: y inversion is enabled, false: disabled
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*/
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bool lv_line_get_y_invert(const lv_obj_t * obj);
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/**********************
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* MACROS
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**********************/
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#endif /*LV_USE_LINE*/
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#ifdef __cplusplus
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} /*extern "C"*/
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#endif
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#endif /*LV_LINE_H*/
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