Improve dockapp recognition

On Wed, Sep 15, 2010 at 04:40:52PM +0200, Gilbert wrote:
>
> "." = {NoAppIcon = Yes;};
>   "*" = {NoAppIcon = Yes;};

Oh, I see. It lets you override NoAppIcon generically instead of for
each app.

> Exactly, having 'DockApp' as the class name makes them behave more
> consistently internally. This might be fixed in some other way
> internally, but I couldn't figure it out...

Except it doesn't, the only thing it changes inside wmaker is that it
avoids displaying the name as "DockApp" on the settings window.

A "dockapp" is just an application that sets icon_window in WM_HINTS
(which causes a window to be displayed as the app icon) and
initial_state to WithdrawnState (which causes the main window to not
actually appear when the window is mapped). The class has nothing to do
with it.

The problems I mentioned stem from gtk+ not allowing you to set
initial_state to WithdrawnState. Openbox and fluxbox (and maybe others)
don't take the icon_window into their "slit" unless initial_state is
WithdrawnState, so the whole thing completely fails. Wmaker always uses
the icon_window for the app icon, so that part works fine, but the
"main" app window still flashes onscreen for a split second before the
app can call gdk_window_withdraw(), and wmaker applies SharedAppIcon to
it which winds up screwing up the "Kill" menu option.

That said, I've attached a patch to have wmaker treat any window with
class DockApp as if it had initial_state = WithdrawnState, and hopefully
openbox, fluxbox, and the like will pick up the idea too so gtk+
hacks[1] will no longer be needed. If this patch is accpeted, I'll poke
fluxbox and openbox to suggest the idea to them.

[1] E.g. http://wmudmount.svn.sourceforge.net/viewvc/wmudmount/dock.c?r1=8&r2=7

Subject: [PATCH] Improve dockapp recognition

Dockapps are traditionally recognized by having initial_state =
WithdrawnState in WM_HINTS. But some toolkits (e.g. gtk+) will not allow
setting initial_state in this way. So we offer an alternative: any
window with the res_class portion of WM_CLASS set as "DockApp" will be
treated as if it had initial_state = WithdrawnState.

src/window.h

@@ -261,6 +261,7 @@ typedef struct WWindow {
         /* info flags */
         unsigned int is_gnustep:1;  /* 1 if the window belongs to a GNUstep
                                        app */
+        unsigned int is_dockapp:1;  /* 1 if the window belongs to a DockApp */
 
         unsigned int buttons_dont_fit:1;
         unsigned int rebuild_texture:1;  /* the window was resized and