Re: A few quick questions about gtkprint

[Vamsi Krishna Davuluri <vamsi davuluri gmail com>]

Thank you again!
Here is the code I was talking about; my code pretty much does the job of
printing .txt files and related mime types,
http://pastebin.be/17838
But I would love to see your code as well.

Our Read activity (sugar apps are called activities) supports a plethora of
formats (let me just check how it draws on screen), okay it uses the evince
library, meaning I should be able to draw to a Cairo context right? as the
underlying lower level implementation would be cairo if I am not mistaken?
(let me make sure that too). Yep evince uses poppler for pdf, and that cairo
as backends.



On Wed, Apr 15, 2009 at 4:15 PM, Chris Vine <chris cvine freeserve co uk>wrote:

> I think that will depend on the application.  If it draws pages using
> cairo and then paints them directly to X server side objects
> (eg GDK drawables via gdk_cairo_create()) then you are in a very
> straightforward position because you should be able to use the same
> drawing functions when drawing to cairo surfaces for painting to the
> print cairo context.  All you may have to do is do some scaling of the
> print cairo context.
>
> If the application doesn't do that, but you can get hold of (or convert
> to) pixel data in an image format supported by
> cairo_image_surface_create_for_data() then you can use that to paint to
> the print cairo context (after scaling).
>
> If though the application uses higher-level GTK+ interfaces to display
> program material, such as GtkTextView, then I think you are going to
> have to draw the text yourself with pango-cairo.  If it is just pure
> text you are thinking about, this is pretty straightforward (I can send
> you an url to some code I have written to print plain text log
> files using GtkPrintOperation if you like).
>
> Chris
>