Re: gdk_draw_string deprecated?

[Mathieu Lacage <mathieu_lacage myrealbox com>]

On Tue, 2003-10-14 at 14:13, Andrej Prsa wrote:
> Hello!
> 
> > I am not sure what you are trying to do but you can get the platform's
> > default context object for a given layout with pango_layout_get_context.
> 
> Well, it's just the other way around; I thought I have to create a context
> in order to create a layout in order to put some text on the drawable. I
> did all this with gdk_draw_string before and now I just want to
> "modernize" my program to GTK+2.* policy. O;)

well, I should have read my sample code better: here is something which
works (it draws a vertical scale). Sorry for the mistake.

This code might not build (I had to edit some stuff out of it) but it
worked at one point, that's for sure :)

{
        PangoLayout *layout;
        PangoContext *context;
        gint max_width;
        gint height, width;
        /* vertical rule */
        gdk_draw_line (draw, gc, x, 0, x, display_end);
                                                                                                                                                                    
        /* horizontal rules + text */
        gint32 y_step = display_end/n_steps;
        gint32 y = 0;
        gdouble real_y_step = ((gdouble )real_end)/((gdouble)n_steps);
        gdouble real_y = 0;
        context = gdk_pango_context_get ();
        layout = pango_layout_new (context);
        pango_layout_set_alignment (layout, PANGO_ALIGN_LEFT);
        max_width = 0;
        for (RMuint8 i = 0; i < n_steps; i++) {
                gdk_draw_line (draw, gc, x, y, x+10, y);
                gchar *str = g_strdup_printf ("%u", (guint)real_y);
                pango_layout_set_text (layout, str, -1);
                g_free (str);
                gdk_draw_layout (draw, gc, x, y, layout);
                pango_layout_get_pixel_size (layout, &width, &height);
                max_width = max (width, max_width);
                y += y_step;
                real_y += real_y_step;
        }
        g_assert (max_width >= 0);
        return max_width;
}

Mathieu
-- 
Mathieu Lacage <mathieu gnu org>