Re: Drawing Pango Layouts

[Twiine <cooli_best gmx de>]

Havoc Pennington wrote:

> Twiine <cooli_best gmx de> writes:
>
> > I have a question concerning the drawing of pango layouts. I want to
> > draw a pango layout using different colors. So I added the needed
> > attributes using pango_layout_set_attributes and tried to draw the
> > entire thing with gtk_paint_layout. This doesn`t work since
> > gtk_paint_layout uses the GCs of the style argument to determine the
> > colors of the text. As far as I know its the same for
> > gtk_draw_layout. Is there a function which uses the pango attributes
> > for drawing? Or can I convert the attributes to a GC so that I can
> > paint them with gdk_draw_layout?
>
> gtk_paint_layout and gdk_draw_layout() should use any colors specified
> in the PangoAttrList for the layout.
I modified hello world with the commands my program uses but I still get 
the same results. When I click the button the appearing text ist still 
black on gray :). What am I doing wrong?

#include <gtk/gtk.h>

void hello( GtkWidget *widget,
          gpointer   data )
{
  PangoLayout *layout;    PangoAttrList *attrs;

  layout = gtk_widget_create_pango_layout(widget,NULL);

  pango_layout_set_font_description(layout,                   
pango_font_description_from_string("fixed 10"));

  attrs = pango_attr_list_new();
  pango_attr_list_insert(attrs,                
pango_attr_foreground_new(0x0000, 0xFFFF, 0x0000));
  pango_attr_list_insert(attrs,                
pango_attr_background_new(0xFFFF, 0x0000, 0x0000));

  pango_layout_set_attributes(layout, attrs);

  pango_layout_set_text(layout ,"WWWW", -1);

  gtk_paint_layout (widget->style, widget->window, 
GTK_WIDGET_STATE(widget),
             FALSE, NULL, widget, "label",
             0, 0, layout);

  g_free(attrs);
  g_free(layout);
}

gint delete_event( GtkWidget *widget,
                 GdkEvent  *event,
          gpointer   data )
{
  g_print ("delete event occurred\n");

  return TRUE;
}

void destroy( GtkWidget *widget,
            gpointer   data )
{
  gtk_main_quit ();
}

int main( int   argc,
        char *argv[] )
{
  GtkWidget *window;
  GtkWidget *button;
     gtk_init (&argc, &argv);

  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
     g_signal_connect (G_OBJECT (window), "delete_event",
             G_CALLBACK (delete_event), NULL);
     g_signal_connect (G_OBJECT (window), "destroy",
             G_CALLBACK (destroy), NULL);
     gtk_container_set_border_width (GTK_CONTAINER (window), 30);
     button = gtk_button_new_with_label ("Click me");
     g_signal_connect (G_OBJECT (button), "clicked",
             G_CALLBACK (hello), NULL);
     gtk_container_add (GTK_CONTAINER (window), button);
     gtk_widget_show (button);
  gtk_widget_show (window);
     gtk_main ();
     return 0;
}