Re: Panels with compiz

On Mon, 28 Apr 2008 09:02:43 +1000
Lucas Hazel <[email protected]> wrote:

> On Sun, 27 Apr 2008 15:06:24 +0100
> "Thomas Leonard" <[email protected]> wrote:
> 
> > 2008/4/27 Lucas Hazel <[email protected]>:
> > > On Fri, 25 Apr 2008 23:24:52 +1000
> > >
> > > Lucas Hazel <[email protected]> wrote:
> > >
> > >  >
> > >  > I just upgraded to compiz-fusion 0.7.4, and the panels come off
> > >  > the screen.
> > > > Not sure if this a bug with ROX or compiz though.
> > >  >
> > >
> > >  Here is a screenshot of the problem,
> > > http://i27.tinypic.com/so1stu.jpg
> > >
> > >  I'm almost certain this is a ROX related bug now. I did a quick
> > > test to see how compiz handles dock type windows:
> > >
> > >  #include <gtk/gtk.h>
> > >
> > >  int main(int argc, char **argv) {
> > >         GtkWidget *panel;
> > >         gtk_init(&argc, &argv);
> > >         panel = gtk_window_new(GTK_WINDOW_TOPLEVEL);
> > >         gtk_window_set_type_hint(GTK_WINDOW(panel),
> > >                 GDK_WINDOW_TYPE_HINT_DOCK);
> > >         gtk_widget_show(panel);
> > >         gtk_main();
> > >         return 0;
> > >  }
> > >
> > >  Under compiz this immediately put the window onto the edge of the
> > >  screen, made it sticky and ignored by pagers and tasklists. So
> > > the only requirement under compiz to create a panel is to set the
> > > dock type window hint.
> > >
> > >  I've been playing with the X11 magic in gui_support.c and panel.c
> > > but can't seem to pinpoint the cause. Is there anywhere else I
> > > should be looking? Or any ideas what might cause this effect?
> > 
> > Is panel_setup_struts() causing the problem?
> > 
> > 
> 
> That was my immediate reaction because it looks like the panels are
> being place outside of the struts. I turned off struts in the code and
> sure enough the panels go to the edge, but this breaks the "do not
> cover panel" option. I've installed fbpanel to see if there is
> anything noticably different, which there isn't. fbpabel uses struts
> and it a dock type window, yet manages to sit on the screen edge.

I'm trying to come up with a minimal example of a dock type window with
struts, but I can't get it to set the strut hints. I've attached the
example, just wondering if there was something obvious I was missing?

-- 
Lucas Hazel <[email protected]>

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#include <gtk/gtk.h>
#include <gdk/gdk.h>

int main(int argc, char **argv) {
	GtkWidget *panel;
	
	struct {
		gulong left, right, top, bottom;
		gulong left_start_y, left_end_y;
		gulong right_start_y, right_end_y;
		gulong top_start_x, top_end_x;
		gulong bottom_start_x, bottom_end_x;
	} strut = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
	
	gtk_init(&argc, &argv);
	
	panel = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	
	gtk_window_resize(GTK_WINDOW(panel), 1440, 32);
	gtk_window_set_type_hint(GTK_WINDOW(panel), GDK_WINDOW_TYPE_HINT_DOCK);
	
	strut.top = 32;
	strut.top_start_x = 0;
	strut.top_end_x = 1439;
	
	gdk_property_change(panel->window,
		gdk_atom_intern("_NET_WM_STRUT", FALSE),
		gdk_atom_intern("CARDINAL", FALSE),
		32, GDK_PROP_MODE_REPLACE,
		(gchar *) &strut, 4);
	
	gdk_property_change(panel->window,
		gdk_atom_intern("_NET_WM_STRUT_PARTIAL", FALSE),
		gdk_atom_intern("CARDINAL", FALSE),
		32, GDK_PROP_MODE_REPLACE,
		(gchar *) &strut, 12);
	
	gtk_widget_show(GTK_WIDGET(panel));
	
	gtk_main();
	return 0;
}