lv_draw_vector_private.h

API reference for lv_draw_vector_private.h

Summary

Functions

private/draw/lv_draw_vector_private.h:131function

lv_vector_for_each_destroy_tasks

This is the main function to draw the accumulated vector tasks by passing them to a vector renderer callback. When the callback returns the processed vector task will be destroyed.

void lv_vector_for_each_destroy_tasks(lv_ll_t *task_list, vector_draw_task_cb cb, void *user_data)

Name	Type	Description
`task_list`	`lv_ll_t *`	pointer to the linked list in `lv_draw_vector_dsc_t` that stores the path shapes and their attributes.
`cb`	`vector_draw_task_cb`	the callback used to iterate through the task
`user_data`	`void *`	a custom pointer that will be passed to the callback May be `NULL`.

Structs

struct

_lv_vector_path_t

Stores the shape of the path as arrays of operations and points. For example move to 10;20 then draw a line to 30;40 and draw an arc with 30 radius and 70° sweep.

lv_vector_path_ctx_t is also required to describe how to fill and stroke the path.

Member	Type	Description
`quality`	`lv_vector_path_quality_t`
`ops`	`lv_array_t`
`points`	`lv_array_t`

struct

_lv_vector_gradient_t

Member	Type	Description
`style`	`lv_vector_gradient_style_t`
`stops`	`lv_grad_stop_t[2]`	A gradient stop array
`stops_count`	`uint16_t`	The number of used stops in the array
`x1`	`float`
`y1`	`float`
`x2`	`float`
`y2`	`float`
`cx`	`float`
`cy`	`float`
`cr`	`float`
`spread`	`lv_vector_gradient_spread_t`

struct

_lv_vector_fill_dsc_t

Member	Type	Description
`style`	`lv_vector_draw_style_t`
`color`	`lv_color32_t`
`opa`	`lv_opa_t`
`fill_rule`	`lv_vector_fill_t`
`fill_units`	`lv_vector_fill_units_t`
`img_dsc`	`lv_draw_image_dsc_t`
`gradient`	`lv_vector_gradient_t`
`matrix`	`lv_matrix_t`

struct

_lv_vector_stroke_dsc_t

Member	Type	Description
`style`	`lv_vector_draw_style_t`
`color`	`lv_color32_t`
`opa`	`lv_opa_t`
`width`	`float`
`dash_pattern`	`lv_array_t`
`cap`	`lv_vector_stroke_cap_t`
`join`	`lv_vector_stroke_join_t`
`miter_limit`	`uint16_t`
`gradient`	`lv_vector_gradient_t`
`matrix`	`lv_matrix_t`

struct

_lv_vector_path_ctx_t

Stores how to fill, stroke, transform etc a given path

Member	Type	Description
`fill_dsc`	`lv_vector_fill_dsc_t`
`stroke_dsc`	`lv_vector_stroke_dsc_t`
`matrix`	`lv_matrix_t`
`blend_mode`	`lv_vector_blend_t`
`scissor_area`	`lv_area_t`

struct

_lv_draw_vector_dsc_t

Member	Type	Description
`base`	`lv_draw_dsc_base_t`
`ctx`	`lv_vector_path_ctx_t *`	The current colors, opacities, matrix, etc for the next task to be added by
`task_list`	`lv_ll_t *`	Store path shapes and their attributes in a list as `lv_draw_vector_subtask_t`.

struct

lv_draw_vector_subtask_t

Contains a path shape and its attributes together. It's a task that will be passed to the vector rendering engine. It's used in the task_list of lv_draw_vector_dsc_t.

Member	Type	Description
`path`	`lv_vector_path_t *`
`ctx`	`lv_vector_path_ctx_t`

Dependencies

Indirect dependencies

lv_draw_vector_private.h

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