PNG Support
Reading and writing PNG images
The PNG functions allow reading PNG images into image surfaces, and writing
any surface to a PNG file.
#cairo_surface_t
Defined if the PNG functions are available.
This macro can be used to conditionally compile code using the cairo
PNG functions.
@filename:
@Returns:
@closure:
@data:
@length:
@Returns:
@read_func:
@closure:
@Returns:
@surface:
@filename:
@Returns:
@closure:
@data:
@length:
@Returns:
@surface:
@write_func:
@closure:
@Returns: