Re: Printing a second page from the canvas



On Thu, 2011-10-06 at 10:32 +0100, Damon Chaplin wrote:
> On Thu, 2011-10-06 at 09:05 +0200, Murray Cumming wrote:
> > I'm using goo_canvas_render() in a GtkPrintOperation::draw-page handler,
> > but maybe I misunderstand the meaning of goo_canvas_render()'s bounds
> > parameter.
> > 
> > In this simple test case, the first page is fine, but the second page is
> > always blank, as you can see in the print preview.
> > https://bugzilla.gnome.org/show_bug.cgi?id=660553#c5
> 
> I think you just need to translate the output to the position you want
> it on the page, e.g.:
> 
> In draw_page():
>     cr = gtk_print_context_get_cairo_context(context);
> +   cairo_translate (cr, 0, -A4_PAGE_HEIGHT * page_nr);
>     goo_canvas_render(GOO_CANVAS(data->canvas), cr, &bounds, 0.0);
> 
> That seems to work here.
> 
> We should add some documentation for this.

Thanks. That works. I was doing the cairo_translate() after
goo_canvas_render(), not before.

I'll add something to the documentation. Maybe we can even add this test
case as an example in git.

-- 
murrayc murrayc com
www.murrayc.com
www.openismus.com



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