libwnck test-tasklist applet

[Seb James <seb esfnet co uk>]

Hello List,

I'm playing with a simple desktop setup which has just metacity and a
tasklist. 

This post relates to libwnck, rather than metacity, please let me know
if there is a better list to post this to.

I've made some trivial changes to test-tasklist.c to make it appear as a
dock-bar at the bottom of the screen. 

There are only two problems.

1) When there is only one task, then the task appears as a button which
is the width of the whole window, rather than having a reasonable
minimum button width.

2) If there are a number of tasks running, then the text describing the
tasks will overflow over the end of the button.

These have been solved in the gnome window-list applet, but I'm
wondering what the easiest way I could add these changes to
test-taskbar.c? 

What signals can I connect to when the number of items in the taskbar
changes?

It seems as if I need to change the size of the containing frame, when
the number of elements  in the tasklist is lower than some number.

Any hints gratefully received.

best regards,

Seb James

Here's my modified version of test-tasklist.c:

-------------------test-tasklist.c--------------------------------------
#include <libwnck/libwnck.h>
#include <gtk/gtk.h>

#define TASKLIST_HEIGHT 30

int
main (int argc, char **argv)
{
  WnckScreen *screen;
  GtkWidget *win;
  GtkWidget *frame;
  GtkWidget *tasklist;
  int w, h;
  int n_elements;
  int * size_hints;

  gtk_init (&argc, &argv);

  screen = wnck_screen_get_default ();
  w = wnck_screen_get_width (screen);
  h = wnck_screen_get_height (screen);
  
  /* because the pager doesn't respond to signals at the moment */
  wnck_screen_force_update (screen);
  win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_window_set_default_size (GTK_WINDOW (win), w, TASKLIST_HEIGHT);
  gtk_window_stick (GTK_WINDOW (win));
  wnck_gtk_window_set_dock_type (GTK_WINDOW (win));

  gtk_window_set_title (GTK_WINDOW (win), "Task List");
  gtk_window_set_policy (GTK_WINDOW (win),
			 TRUE, TRUE, FALSE);

  /* quit on window close */
  g_signal_connect (G_OBJECT (win), "destroy",
                    G_CALLBACK (gtk_main_quit),
                    NULL);

  tasklist = wnck_tasklist_new (screen);
  wnck_tasklist_set_grouping (WNCK_TASKLIST (tasklist),
WNCK_TASKLIST_AUTO_GROUP);

  /* Wonder if size_hints is something to do with solution? */
  size_hints = wnck_tasklist_get_size_hint_list (tasklist, &n_elements);
  g_print ("n elements = %d\n", n_elements);

  frame = gtk_frame_new (NULL);
  gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
  gtk_container_add (GTK_CONTAINER (win), frame);

  gtk_container_add (GTK_CONTAINER (frame), tasklist);  

  gtk_widget_show (tasklist);
  gtk_widget_show (frame);

  gtk_window_move (GTK_WINDOW (win), 0, h-TASKLIST_HEIGHT);
  
  gtk_widget_show (win);
  
  gtk_main ();
  
  return 0;
}
------------------------------------------------------------

-- 
Embedded Software Foundry Ltd. 'Embedded Linux Development'
Tel: +44 (0)845 4580277   Web: http://www.esfnet.co.uk/
Axiom Tech Open Source Member: http://www.axiomtech.co.uk/
Gpg key: http://www.esfnet.co.uk/ssl/seb.gpg