lv_draw_label_private.h

struct _lv_draw_label_hint_t

#include <lv_draw_label_private.h>

Store some info to speed up drawing of very large texts It takes a lot of time to get the first visible character because all the previous characters needs to be checked to calculate the positions. This structure stores an earlier (e.g. at -1000 px) coordinate and the index of that line. Therefore the calculations can start from here.

Public Members

int32_t line_start: Index of the line at y coordinate

int32_t y: Give the y coordinate of the first letter at line start index. Relative to the label's coordinates

int32_t coord_y: The 'y1' coordinate of the label when the hint was saved. Used to invalidate the hint if the label has moved too much.

struct _lv_draw_glyph_dsc_t

Public Members

const void *glyph_data: Depends on format field, it could be image source or draw buf of bitmap or vector data.

lv_font_glyph_format_t format

const lv_area_t *letter_coords

const lv_area_t *bg_coords

lv_font_glyph_dsc_t *g

lv_color_t color

lv_opa_t opa

int32_t rotation

lv_point_t pivot: Rotation pivot point associated with total glyph including line_height

lv_draw_buf_t *_draw_buf: a shared draw buf for get_bitmap, do not use it directly, use glyph_data instead