lv_draw_sw_mask.h

Defines

LV_MASK_ID_INV

_LV_MASK_MAX_NUM

Typedefs

typedef uint8_t lv_draw_sw_mask_res_t

typedef uint8_t lv_draw_sw_mask_type_t

typedef lv_draw_sw_mask_res_t (*lv_draw_sw_mask_xcb_t)(lv_opa_t *mask_buf, int32_t abs_x, int32_t abs_y, int32_t len, void *p): A common callback type for every mask type. Used internally by the library.

typedef uint8_t lv_draw_sw_mask_line_side_t

typedef _lv_draw_sw_mask_radius_circle_dsc_t _lv_draw_sw_mask_radius_circle_dsc_arr_t[4]

typedef struct _lv_draw_sw_mask_map_param_t lv_draw_sw_mask_map_param_t

Enums

enum [anonymous]

Values:

enumerator LV_DRAW_SW_MASK_RES_TRANSP

enumerator LV_DRAW_SW_MASK_RES_FULL_COVER

enumerator LV_DRAW_SW_MASK_RES_CHANGED

enumerator LV_DRAW_SW_MASK_RES_UNKNOWN

enum [anonymous]

Values:

enumerator LV_DRAW_SW_MASK_TYPE_LINE

enumerator LV_DRAW_SW_MASK_TYPE_ANGLE

enumerator LV_DRAW_SW_MASK_TYPE_RADIUS

enumerator LV_DRAW_SW_MASK_TYPE_FADE

enumerator LV_DRAW_SW_MASK_TYPE_MAP

enum [anonymous]

Values:

enumerator LV_DRAW_SW_MASK_LINE_SIDE_LEFT

enumerator LV_DRAW_SW_MASK_LINE_SIDE_RIGHT

enumerator LV_DRAW_SW_MASK_LINE_SIDE_TOP

enumerator LV_DRAW_SW_MASK_LINE_SIDE_BOTTOM

Functions

void lv_draw_sw_mask_init(void)

void lv_draw_sw_mask_deinit(void)

void lv_draw_sw_mask_free_param(void *p)

Free the data from the parameter. It's called inside lv_draw_sw_mask_remove_id and lv_draw_sw_mask_remove_custom Needs to be called only in special cases when the mask is not added by lv_draw_mask_add and not removed by lv_draw_mask_remove_id or lv_draw_mask_remove_custom

参数:: p -- pointer to a mask parameter

void _lv_draw_sw_mask_cleanup(void): Called by LVGL the rendering of a screen is ready to clean up the temporal (cache) data of the masks

void lv_draw_sw_mask_line_points_init(lv_draw_sw_mask_line_param_t *param, int32_t p1x, int32_t p1y, int32_t p2x, int32_t p2y, lv_draw_sw_mask_line_side_t side)

Initialize a line mask from two points.

参数:

param -- pointer to a lv_draw_mask_param_t to initialize
p1x -- X coordinate of the first point of the line
p1y -- Y coordinate of the first point of the line
p2x -- X coordinate of the second point of the line
p2y -- y coordinate of the second point of the line
side -- and element of lv_draw_mask_line_side_t to describe which side to keep. With LV_DRAW_MASK_LINE_SIDE_LEFT/RIGHT and horizontal line all pixels are kept With LV_DRAW_MASK_LINE_SIDE_TOP/BOTTOM and vertical line all pixels are kept

void lv_draw_sw_mask_line_angle_init(lv_draw_sw_mask_line_param_t *param, int32_t p1x, int32_t py, int16_t angle, lv_draw_sw_mask_line_side_t side)

Initialize a line mask from a point and an angle.

参数:

param -- pointer to a lv_draw_mask_param_t to initialize
px -- X coordinate of a point of the line
py -- X coordinate of a point of the line
angle -- right 0 deg, bottom: 90
side -- and element of lv_draw_mask_line_side_t to describe which side to keep. With LV_DRAW_MASK_LINE_SIDE_LEFT/RIGHT and horizontal line all pixels are kept With LV_DRAW_MASK_LINE_SIDE_TOP/BOTTOM and vertical line all pixels are kept

void lv_draw_sw_mask_angle_init(lv_draw_sw_mask_angle_param_t *param, int32_t vertex_x, int32_t vertex_y, int32_t start_angle, int32_t end_angle)

Initialize an angle mask.

参数:

param -- pointer to a lv_draw_mask_param_t to initialize
vertex_x -- X coordinate of the angle vertex (absolute coordinates)
vertex_y -- Y coordinate of the angle vertex (absolute coordinates)
start_angle -- start angle in degrees. 0 deg on the right, 90 deg, on the bottom
end_angle -- end angle

void lv_draw_sw_mask_radius_init(lv_draw_sw_mask_radius_param_t *param, const lv_area_t *rect, int32_t radius, bool inv)

Initialize a fade mask.

参数:

param -- pointer to an lv_draw_mask_radius_param_t to initialize
rect -- coordinates of the rectangle to affect (absolute coordinates)
radius -- radius of the rectangle
inv -- true: keep the pixels inside the rectangle; keep the pixels outside of the rectangle

void lv_draw_sw_mask_fade_init(lv_draw_sw_mask_fade_param_t *param, const lv_area_t *coords, lv_opa_t opa_top, int32_t y_top, lv_opa_t opa_bottom, int32_t y_bottom)