ImageSurface.createFromPngStream

Creates a new image surface from PNG data read incrementally via the read_func function. Since 1.0

class ImageSurface
static
createFromPngStream
(
cairo_read_func_t readFunc
,
void* closure
)

Parameters

readFunc cairo_read_func_t

function called to read the data of the file

closure void*

data to pass to read_func.

Return Value

a new cairo_surface_t initialized with the contents of the PNG file or a "nil" surface if the data read is not a valid PNG image or memory could not be allocated for the operation. A nil surface can be checked for with cairo_surface_status(surface) which