[cairo] Virtual surface

[Behdad Esfahbod]

I have the same question as Joonas: what's a single-line statement of the 
purpose of this virtual surface?

behdad

On 08/09/2009 11:49 AM, M Joonas Pihlaja wrote:
> Hi Mike,
>
> On Sat, 8 Aug 2009, Mike Emmel wrote:
>
>> Hi all I have a good start on a virtual surface backed by a real surface.
>
>> I've found it very useful for scaled widgets virtual screens and other
>> cases where you wan't the hard clipping provided by a surface and
>> other surface features but don't want a buffer or image surface. Such
>> as when the backing surface is already buffered.
>
> I scanned through the code real quick and it looks like it's all about
> proxying methods for another surface and also letting the user set the
> size and scale of the new surface.  As far as I can tell, that's all
> it does though.  Did I miss something else?  I'm a little confused as
> to what purpose the virtual surface has and what exactly is "virtual"
> about it.
>
> I'm also not sure what you mean by using this virtual surface for
> clipping.  Isn't it cairo_clip()'s purpose in life to clip your
> drawing for you?
>
> TIA,
>
> Joonas
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