lv_draw_line.h

Functions

void lv_draw_line_dsc_init(lv_draw_line_dsc_t *dsc)

Initialize a line draw descriptor

Parameters:

dsc – pointer to a draw descriptor

lv_draw_line_dsc_t *lv_draw_task_get_line_dsc(lv_draw_task_t *task)

Try to get a line draw descriptor from a draw task.

Parameters:

task – draw task

Returns:

the task's draw descriptor or NULL if the task is not of type LV_DRAW_TASK_TYPE_LINE

void lv_draw_line(lv_layer_t *layer, const lv_draw_line_dsc_t *dsc)

Create a line draw task

Parameters:

• layer – pointer to a layer

• dsc – pointer to an initialized lv_draw_line_dsc_t variable

struct lv_draw_line_dsc_t

Public Members

lv_draw_dsc_base_t base

lv_point_precise_t p1

The first point of the line. If LV_USE_FLOAT is enabled float number can be also used

lv_point_precise_t p2

The second point of the line. If LV_USE_FLOAT is enabled float number can be also used

lv_color_t color

The color of the line

int32_t width

The width (thickness) of the line

int32_t dash_width

The length of a dash (0: don't dash)

int32_t dash_gap

The length of the gaps between dashes (0: don't dash)

lv_opa_t opa

Opacity of the line in 0...255 range. LV_OPA_TRANSP, LV_OPA_10, LV_OPA_20, .. LV_OPA_COVER can be used as well

uint8_t round_start

Make the line start rounded

uint8_t round_end

Make the line end rounded

uint8_t raw_end

1: Do not bother with line ending (if it's not visible for any reason)