lv_slider.h

Typedefs

typedef _lv_slider_mode_t lv_slider_mode_t

Enums

enum _lv_slider_mode_t

Values:

enumerator LV_SLIDER_MODE_NORMAL

enumerator LV_SLIDER_MODE_SYMMETRICAL

enumerator LV_SLIDER_MODE_RANGE

Functions

lv_obj_t *lv_slider_create(lv_obj_t *parent)

Create a slider object

参数:: parent -- pointer to an object, it will be the parent of the new slider.
返回:: pointer to the created slider

static inline void lv_slider_set_value(lv_obj_t *obj, int32_t value, lv_anim_enable_t anim)

Set a new value on the slider

参数:

obj -- pointer to a slider object
value -- the new value
anim -- LV_ANIM_ON: set the value with an animation; LV_ANIM_OFF: change the value immediately

static inline void lv_slider_set_left_value(lv_obj_t *obj, int32_t value, lv_anim_enable_t anim)

Set a new value for the left knob of a slider

参数:

obj -- pointer to a slider object
value -- new value
anim -- LV_ANIM_ON: set the value with an animation; LV_ANIM_OFF: change the value immediately

static inline void lv_slider_set_range(lv_obj_t *obj, int32_t min, int32_t max)

Set minimum and the maximum values of a bar

参数:

obj -- pointer to the slider object
min -- minimum value
max -- maximum value

static inline void lv_slider_set_mode(lv_obj_t *obj, lv_slider_mode_t mode)

Set the mode of slider.

参数:

obj -- pointer to a slider object
mode -- the mode of the slider. See ::lv_slider_mode_t

static inline int32_t lv_slider_get_value(const lv_obj_t *obj)

Get the value of the main knob of a slider

参数:: obj -- pointer to a slider object
返回:: the value of the main knob of the slider

static inline int32_t lv_slider_get_left_value(const lv_obj_t *obj)

Get the value of the left knob of a slider

参数:: obj -- pointer to a slider object
返回:: the value of the left knob of the slider

static inline int32_t lv_slider_get_min_value(const lv_obj_t *obj)

Get the minimum value of a slider

参数:: obj -- pointer to a slider object
返回:: the minimum value of the slider

static inline int32_t lv_slider_get_max_value(const lv_obj_t *obj)

Get the maximum value of a slider

参数:: obj -- pointer to a slider object
返回:: the maximum value of the slider

bool lv_slider_is_dragged(const lv_obj_t *obj)

Give the slider is being dragged or not

参数:: obj -- pointer to a slider object
返回:: true: drag in progress false: not dragged

static inline lv_slider_mode_t lv_slider_get_mode(lv_obj_t *slider)

Get the mode of the slider.

参数:: slider -- pointer to a slider object
返回:: see ::lv_slider_mode_t

static inline bool lv_slider_is_symmetrical(lv_obj_t *obj)

Give the slider is in symmetrical mode or not

参数:: obj -- pointer to slider object
返回:: true: in symmetrical mode false : not in

Variables

const lv_obj_class_t lv_slider_class

struct lv_slider_t

Public Members

lv_bar_t bar

lv_area_t left_knob_area

lv_area_t right_knob_area

lv_point_t pressed_point

int32_t *value_to_set

uint8_t dragging

uint8_t left_knob_focus