lv_indev_private.h

API reference for lv_indev_private.h

Summary

Functions

indev/lv_indev_private.h:150function

lv_indev_find_scroll_obj

Find a scrollable object based on the current scroll vector in the indev. In handles scroll propagation to the parent if needed, and scroll directions too.

lv_obj_t * lv_indev_find_scroll_obj(lv_indev_t *indev)

Name	Type	Description
`indev`	`lv_indev_t *`	pointer to an indev

Returns: lv_obj_t * — the found scrollable object or NULL if not found.

Structs

struct

_lv_indev_t

Member	Type	Description
`ext_data`	`lv_ext_data_t`
`type`	`lv_indev_type_t`	Input device type
`read_cb`	`lv_indev_read_cb_t`	Function pointer to read input device data.
`state`	`lv_indev_state_t`	Current state of the input device.
`prev_state`	`lv_indev_state_t`	Previous state of the input device.
`mode`	`lv_indev_mode_t`
`long_pr_sent`	`uint8_t`
`reset_query`	`uint8_t`
`enabled`	`uint8_t`
`wait_until_release`	`uint8_t`
`stop_processing_query`	`uint8_t`
`timestamp`	`uint32_t`	Timestamp of last event
`pr_timestamp`	`uint32_t`	Pressed time stamp
`longpr_rep_timestamp`	`uint32_t`	Long press repeat time stamp
`driver_data`	`void *`
`user_data`	`void *`	Pointer to the assigned display
`disp`	`lv_display_t *`	Timer to periodically read the input device
`read_timer`	`lv_timer_t *`	Number of pixels to slide before actually drag the object
`scroll_limit`	`uint8_t`	Drag throw slow-down in [%]. Greater value means faster slow-down
`scroll_throw`	`uint8_t`	Minimum velocity: difference between consecutive points must exceed this (in pixels) to detect gesture speed
`gesture_min_velocity`	`uint8_t`	Minimum distance: total travel from first to current point must exceed this (in pixels) to trigger gesture
`gesture_min_distance`	`uint8_t`	Long press time in milliseconds
`long_press_time`	`uint16_t`	Repeated trigger period in long press [ms]
`long_press_repeat_time`	`uint16_t`	Rotary diff count will be multiplied by this value and divided by 256
`rotary_sensitivity`	`int32_t`
`act_point`	`lv_point_t`	Current point of input device.
`last_point`	`lv_point_t`	Last point of input device.
`last_raw_point`	`lv_point_t`	Last point read from read_cb.
`vect`	`lv_point_t`	Difference between `act_point` and `last_point`.
`vect_hist`	`lv_point_t[8]`
`vect_hist_timestamp`	`uint32_t[8]`
`vect_hist_index`	`uint8_t`
`scroll_sum`	`lv_point_t`
`scroll_throw_vect`	`lv_point_t`
`scroll_throw_vect_ori`	`lv_point_t`
`act_obj`	`lv_obj_t *`
`scroll_obj`	`lv_obj_t *`
`last_pressed`	`lv_obj_t *`
`last_hovered`	`lv_obj_t *`
`scroll_area`	`lv_area_t`
`gesture_sum`	`lv_point_t`
`diff`	`int32_t`
`short_click_streak`	`uint8_t`
`last_short_click_point`	`lv_point_t`
`last_short_click_timestamp`	`uint32_t`
`scroll_dir`	`uint8_t`
`gesture_dir`	`uint8_t`
`gesture_sent`	`uint8_t`
`press_moved`	`uint8_t`
`pressed`	`uint8_t`
`pointer`	`struct _lv_indev_t`
`last_state`	`lv_indev_state_t`
`last_key`	`uint32_t`
`keypad`	`struct _lv_indev_t`
`cursor`	`lv_obj_t *`	Cursor for LV_INPUT_TYPE_POINTER
`group`	`lv_group_t *`	Keypad destination group
`btn_points`	`const lv_point_t *`	Array points assigned to the button ()screen will be pressed here by the buttons
`event_list`	`lv_event_list_t`
`scroll_throw_anim`	`lv_anim_t *`	Key remapping callback
`key_remap_cb`	`lv_indev_key_remap_cb_t`
`recognizers`	`lv_indev_gesture_recognizer_t[LV_INDEV_GESTURE_CNT]`
`cur_gesture`	`lv_indev_gesture_type_t`
`gesture_data`	`void *[LV_INDEV_GESTURE_CNT]`
`gesture_type`	`lv_indev_gesture_type_t[LV_INDEV_GESTURE_CNT]`

Macros

indev/lv_indev_private.h:25macro

LV_INDEV_VECT_HIST_SIZE

#define LV_INDEV_VECT_HIST_SIZE 8