lv_scale_private.h

API reference for lv_scale_private.h

See Also: Public APIThis is the private implementation. See the public header for the stable interface.lv_scale.h

Structs

struct

_lv_scale_section_t

Member	Type	Description
main_style	const lv_style_t *	Style to use for MAIN part(s) of scale when it falls within this section's range
indicator_style	const lv_style_t *	Style to use for INDICATOR part(s) of scale when it falls within this section's range
items_style	const lv_style_t *	Style to use for ITEMS part(s) of scale when it falls within this section's range
range_min	int32_t	Scale parts with value >= this value will be drawn using applicable style.
range_max	int32_t	Scale parts with value <= this value will be drawn using applicable style.
first_tick_idx_in_section	uint32_t	Internal (set during drawing): Tick index of first tick that falls within this section; LV_SCALE_TICK_IDX_DEFAULT_ID if section contains no ticks.
last_tick_idx_in_section	uint32_t	Internal (set during drawing): Tick index of last tick that falls within this section; LV_SCALE_TICK_IDX_DEFAULT_ID if section contains no ticks.
first_tick_in_section_width	int32_t	Internal (set during drawing)
last_tick_in_section_width	int32_t	Internal (set during drawing)
first_tick_in_section	lv_point_t	Internal (set during drawing)
last_tick_in_section	lv_point_t	Internal (set during drawing)
first_tick_idx_is_major	uint32_t	Internal (set during drawing): true if first_tick_idx_in_section represents a major tick.
last_tick_idx_is_major	uint32_t	Internal (set during drawing): true if last_tick_idx_in_section represents a major tick.

struct

lv_scale_needle_t

Member	Type	Description
obj	lv_obj_t *
value	int32_t
length	int32_t

struct

_lv_scale_t

Member	Type	Description
obj	lv_obj_t	Base Widget part of Scale
section_ll	lv_ll_t	Linked list for the sections (stores lv_scale_section_t)
txt_src	const char **	Optional list of text strings for major ticks when custom labels are provided.
mode	lv_scale_mode_t	Orientation and layout of scale.
range_min	int32_t	Scale's minimum value
range_max	int32_t	Scale's maximum value
total_tick_count	uint32_t	Total number of ticks (major and minor)
major_tick_every	uint32_t	Frequency of major ticks to minor ticks
label_enabled	uint32_t	Draw labels for major ticks?
post_draw	uint32_t	false: drawing occurs during LV_EVENT_DRAW_MAIN; true : drawing occurs during LV_EVENT_DRAW_POST.
draw_ticks_on_top	uint32_t	Draw ticks on top of main line?
angle_range	uint32_t	Degrees between low end and high end of scale
rotation	int32_t	Clockwise angular offset from 3-o'clock position of low end of scale
custom_label_cnt	int32_t	Number of custom labels provided in txt_src
last_tick_width	int32_t	Width of last tick in pixels
first_tick_width	int32_t	Width of first tick in pixels
needles	lv_array_t	Needle list of this scale

Dependencies