The way I understand the documentation at
http://www.cairographics.org/manual/cairo-Paths.html
is that a Path can either be constructed through a cairo
context, i.e., using
new_path
move_to
line_to
arc_to
etc
and such a path can be read using either
copy_path
copy_path_flat
But a path can also constructed manually, i.e.
not through a cairo context.
I think I understand now why the binding does
not allow "new Cairo.Path". (I may be wrong
here, so please correct me). This is due to
a limitation in vapi. According to the cairo documentation,
a path obtained using copy_path and copy_path_flat
must be disposed using cairo_path_destroy, hence
the following lines in cairo.vapi:
[Compact]
[CCode (free_function = "cairo_path_destroy", etc]
public class Path { etc }
But, the cairo documentation also states that a
manually constructed path must also be destroyed
manually (i.e., not using cairo_path_destroy).
Hence the vapi cannot provide "new Cairo.Path"
because of the inappropirate free_function.
If alternative free_function is a common expectation
in the commonly used libraries, vala should
address this issue.
Please correct me if I'm wrong.
Nice day
Nor Jaidi Tuah
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