[Gtk-sharp-list] How can I save a cairo imagesurface as a pixbuf

[Andy Selvig]

Oops, trouble typing code into GMail. Let's finish...

Gtk.DrawingArea area = new Gtk.DrawingArea();
using (Context cr = Gdk.CairoHelper.Create(area.GdkWindow))
{
   // draw the image with Cairo
}
Gdk.Pixbuf pixbuf = Gdk.Pixbuf.FromDrawable(area.GdkWindow,
Gdk.Colormap.System, ...);

I haven't used this exact method, but I don't see why it wouldn't work.
There also might be a better way that I'm not seeing.


On Wed, Dec 24, 2008 at 2:54 PM, Andy Selvig <ajselvig at gmail.com> wrote:

> Alan-
>
> Try creating a Gtk.DrawingArea, then use Gdk.CairoHelper to create a Cairo
> context to draw to. Then you can use Gdk.Pixbuf.FromDrawable to create the
> pixbuf. Something like:
>
> Gtk.DrawingArea area = new Gtk.DrawingArea();
> using (Context cr = Gdk.CairoHelper.Create(area.GdkWindow))
> {
>
>
> }
>
>
> On Mon, Dec 22, 2008 at 11:51 AM, alanb <alan.battersby at ntlworld.com>wrote:
>
>>
>> I have a treeview and I want to store dynamically generated images in one
>> of
>> its columns.  Reading the treeview tutorial I see that I need my image as
>> a
>> pixbuf. I am drawing the images using Cairo, all I can see in the
>> imagesurface  API is to save as a png file directly with no access to its
>> underlying stream which I could use. So how can I convert a Cairo image to
>> a
>> pixbuf?
>>
>> If I use a Gdk.pixmap instead and draw to it, again how do I convert it to
>> a
>> pixbuf?
>>
>> thanks
>> Alan
>> --
>> View this message in context:
>> http://www.nabble.com/How-can-I-save-a-cairo-imagesurface-as-a-pixbuf-tp21131994p21131994.html
>> Sent from the Mono - Gtk# mailing list archive at Nabble.com.
>>
>> _______________________________________________
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>>
>
>
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