[cairo] [Fwd: Re: Erase a part of a draw]

[Felix Rabe]

You might want to clip the original surface with the negative mask of
your hole on top of the "unholed" image...

-------- Original Message --------
Subject: 	Re: [cairo] Erase a part of a draw
Date: 	Sat, 10 May 2008 15:12:12 +0200
From: 	fab fab <fabounet03 at gmail.com>
To: 	Felix Rabe <public at felixrabe.textdriven.com>
References:
<29711f840805090156i674db139w5f42d9ba478d8a66 at mail.gmail.com>
<482481AA.8070109 at felixrabe.textdriven.com>



Thanks for your answer !
Yes I could clip a "hole" on the original path before I paint the
surface to it.
But I'd like to make the "hole" after I've painted the surface. Is it
possible ?

2008/5/9 Felix Rabe <public at felixrabe.textdriven.com
<mailto:public at felixrabe.textdriven.com>>:

    Hi,

    I'm not sure you want to "fill a path" here, but you probably want to
    use clipping (look for "clip" in the docs).

    Greetings,
    Felix

    fab fab wrote:
    > Hello, I have a question for Cairo-Dock. I'd like to erase a
    portion of
    > a surface after I have drawned it. For exemple a function paints a
    > surface on the context, and then another function wants to make a
    "hole"
    > in this surface, totally transparent. How could I achieve that ? I've
    > tried to fill a path with all the operators, but it never gives me the
    > result I want.
    > Thanks for your help !
    >
    >
    >
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