lv_draw_sw_blend.h

Functions

void lv_draw_sw_blend(lv_draw_unit_t *draw_unit, const lv_draw_sw_blend_dsc_t *dsc)

Call the blend function of the layer.

参数:
  • draw_unit -- pointer to a draw unit

  • dsc -- pointer to an initialized blend descriptor

struct lv_draw_sw_blend_dsc_t

Public Members

const lv_area_t *blend_area

The area with absolute coordinates to draw on layer->buf will be clipped to layer->clip_area

const void *src_buf

Pointer to an image to blend. If set fill_color is ignored

uint32_t src_stride
lv_color_format_t src_color_format
const lv_area_t *src_area
lv_opa_t opa

The overall opacity

lv_color_t color

Fill color

const lv_opa_t *mask_buf

NULL if ignored, or an alpha mask to apply on blend_area

lv_draw_sw_mask_res_t mask_res

The result of the previous mask operation

const lv_area_t *mask_area

The area of mask_buf with absolute coordinates

int32_t mask_stride
lv_blend_mode_t blend_mode

E.g. LV_BLEND_MODE_ADDITIVE

struct _lv_draw_sw_blend_fill_dsc_t

Public Members

void *dest_buf
int32_t dest_w
int32_t dest_h
int32_t dest_stride
const lv_opa_t *mask_buf
int32_t mask_stride
lv_color_t color
lv_opa_t opa
struct _lv_draw_sw_blend_image_dsc_t

Public Members

void *dest_buf
int32_t dest_w
int32_t dest_h
int32_t dest_stride
const lv_opa_t *mask_buf
int32_t mask_stride
const void *src_buf
int32_t src_stride
lv_color_format_t src_color_format
lv_opa_t opa
lv_blend_mode_t blend_mode