Re: [Gtk2hs-users] How to draw a cairo surface to another?

[Magicloud M. <mag...@gm...>]

Er... how to treat drawable as pixbuf, castToPixbuf? It failed when running....

On Mon, Aug 17, 2009 at 6:10 PM, Axel Simon<Axe...@en...> wrote:
>
> On Aug 17, 2009, at 11:41, Magicloud Magiclouds wrote:
>
>> Hi,
>>  The situation is like this. I have a drawable widget, I draw
>> something on it using cairo. And I have another pixmap, I draw some
>> lines on it.
>>  Now I want to cover the picture in the pixmap on the widget. By
>> cover, I meant only draw the lines to the widget, not totally cover.
>>  How to do that? I cannot figure out a proper way in gtk2hs.
>
> You can treat a drawable as a pixbuf and as a cairo surface at the same time
> using the functions
>
> http://www.haskell.org/gtk2hs/docs/gtk2hs-docs-0.10.0/Graphics-UI-Gtk-Cairo.html#v%3AcairoImageSurfaceFromPixbuf
>
> I've added these functions due to a similar request. I was never able to
> test them, so it would be good if you could give us some feedback if they
> work as expected.
>
> Axel.
>
>> 竹密岂妨流水过
>> 山高哪阻野云飞
>>
>>
>> ------------------------------------------------------------------------------
>> Let Crystal Reports handle the reporting - Free Crystal Reports 2008
>> 30-Day
>> trial. Simplify your report design, integration and deployment - and focus
>> on
>> what you do best, core application coding. Discover what's new with
>> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
>> _______________________________________________
>> Gtk2hs-users mailing list
>> Gtk...@li...
>> https://lists.sourceforge.net/lists/listinfo/gtk2hs-users
>
>



-- 
竹密岂妨流水过
山高哪阻野云飞