Re: Pango Rendering API

[soheil hassas yeganeh <hassas ce sharif edu>]

Dear All

I made an XftDraw as Noah said, and I drew a Rectangle on that Draw so I
think my XftDraw is a correct XftDraw but when I call pango_xft_render()
it did not render anything on that draw.
And I call pango_itemize and pango_shape before the rendering API, they
did their job well and created correct glyphs for me but when I passed
these correct structs (XftDraw, Color, Font, GlyphString , ... ) to
pango_xft_render() it did not work well for me.
By the way, I'm sure that these font is handeled bye Xft section of pango
API, I'd trace it . The returned analysis structure has the engine ID of
ArabicXft engine.

would you please help me !!!!!


context = gtk_widget_create_pango_context(widget);
/* .... Creatring any other needed variables .... */
list = pango_itemize(context, x, 0, 4, attrs, NULL);
item = list->data;
if(list)
{
        if(item->analysis.shape_engine)
        {
                printf("%x\n", item->analysis.font);
                gls = pango_glyph_string_new();
                pango_shape(x, 4, &(item->analysis) , gls);
        }
        else return;//)
}
else return;//)

/*   ... Creating XftDraw like Noah said .... */

font = pango_context_load_font
             (context, pango_font_description_from_string("serif 20"));


pango_xft_render                 (xftdraw,
                                  &color,
                                  font,
                                  gls,
                                  100,
                                  100);

.....

Best Regards
Soheil Hassas Yeganeh
> On Sat, 2003-08-16 at 08:20, soheil hassas yeganeh wrote:
> > Dear All
> >
> > I call the pango rendering API directly from a gtk+ application
> >
> > I first user pango_itemize routine, after, pango_shape routine, and
> > after i call the pango_xft_render, but i doesn't show anything on the
> > main frame !!!
>
> Look at the docs for gdk_window_get_internal_paint_info()
>
> > What can i do to render the text directly by pango API ????
>
> If you are using it in a GTK+ program, just use gdk_draw_layout(), it's
> the same as using the low level calls but:
>
>  - Takes care of drawing to the right target; it knows about
>    double buffering.
>  - It uses the right backend - pango_xft_render(), pango_win32_render()
>    or whatever is appropriate.
>  - It creates the XftDraw automatically.
>
> Regards,
>                                               Owen
>
>
>
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