lv_draw_sw.h
Functions
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void lv_draw_sw_init(void)
Initialize the SW renderer. Called in internally. It creates as many SW renderers as defined in LV_DRAW_SW_DRAW_UNIT_CNT
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void lv_draw_sw_deinit(void)
Deinitialize the SW renderers
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void lv_draw_sw_fill(lv_draw_unit_t *draw_unit, const lv_draw_fill_dsc_t *dsc, const lv_area_t *coords)
Fill an area using SW render. Handle gradient and radius.
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
coords -- the coordinates of the rectangle
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void lv_draw_sw_border(lv_draw_unit_t *draw_unit, const lv_draw_border_dsc_t *dsc, const lv_area_t *coords)
Draw border with SW render.
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
coords -- the coordinates of the rectangle
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void lv_draw_sw_box_shadow(lv_draw_unit_t *draw_unit, const lv_draw_box_shadow_dsc_t *dsc, const lv_area_t *coords)
Draw box shadow with SW render.
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
coords -- the coordinates of the rectangle for which the box shadow should be drawn
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void lv_draw_sw_image(lv_draw_unit_t *draw_unit, const lv_draw_image_dsc_t *draw_dsc, const lv_area_t *coords)
Draw an image with SW render. It handles image decoding, tiling, transformations, and recoloring.
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
coords -- the coordinates of the image
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void lv_draw_sw_label(lv_draw_unit_t *draw_unit, const lv_draw_label_dsc_t *dsc, const lv_area_t *coords)
Draw a label with SW render.
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
coords -- the coordinates of the label
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void lv_draw_sw_arc(lv_draw_unit_t *draw_unit, const lv_draw_arc_dsc_t *dsc, const lv_area_t *coords)
Draw an arc with SW render.
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
coords -- the coordinates of the arc
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void lv_draw_sw_line(lv_draw_unit_t *draw_unit, const lv_draw_line_dsc_t *dsc)
Draw a line with SW render.
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
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void lv_draw_sw_layer(lv_draw_unit_t *draw_unit, const lv_draw_image_dsc_t *draw_dsc, const lv_area_t *coords)
Blend a layer with SW render
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
coords -- the coordinates of the layer
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void lv_draw_sw_triangle(lv_draw_unit_t *draw_unit, const lv_draw_triangle_dsc_t *dsc)
Draw a triangle with SW render.
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
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void lv_draw_sw_mask_rect(lv_draw_unit_t *draw_unit, const lv_draw_mask_rect_dsc_t *dsc, const lv_area_t *coords)
Mask out a rectangle with radius from a current layer
- Parameters:
draw_unit -- pointer to a draw unit
dsc -- the draw descriptor
coords -- the coordinates of the mask
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void lv_draw_sw_transform(lv_draw_unit_t *draw_unit, const lv_area_t *dest_area, const void *src_buf, int32_t src_w, int32_t src_h, int32_t src_stride, const lv_draw_image_dsc_t *draw_dsc, const lv_draw_image_sup_t *sup, lv_color_format_t cf, void *dest_buf)
Used internally to get a transformed are of an image
- Parameters:
draw_unit -- pointer to a draw unit
dest_area -- the area to calculate, i.e. get this area from the transformed image
src_buf -- the source buffer
src_w -- source buffer width in pixels
src_h -- source buffer height in pixels
src_stride -- source buffer stride in bytes
dsc -- the draw descriptor
sup -- supplementary data
cf -- color format of the source buffer
dest_buf -- the destination buffer
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void lv_draw_sw_rgb565_swap(void *buf, uint32_t buf_size_px)
Swap the upper and lower byte of an RGB565 buffer. Might be required if a 8bit parallel port or an SPI port send the bytes in the wrong order. The bytes will be swapped in place.
- Parameters:
buf_size_px -- number of pixels in the buffer
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void lv_draw_sw_rotate(const void *src, void *dest, int32_t src_width, int32_t src_height, int32_t src_sride, int32_t dest_stride, lv_display_rotation_t rotation, lv_color_format_t color_format)
Rotate a buffer into an other buffer
- Parameters:
src -- the source buffer
dest -- the destination buffer
src_width -- source width in pixels
src_height -- source height in pixels
src_sride -- source stride in bytes (number of bytes in a row)
dest_stride -- destination stride in bytes (number of bytes in a row)
rotation -- LV_DISPLAY_ROTATION_0/90/180/270
color_format -- LV_COLOR_FORMAT_RGB565/RGB888/XRGB8888/ARGB8888
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struct lv_draw_sw_unit_t