/* $Id: desktop.c,v 1.1 2004/08/28 19:25:45 dannybackx Exp $ *//*****************************************************************************//**       Copyright 1988 by Evans & Sutherland Computer Corporation,        **//**                          Salt Lake City, Utah                           **//**  Portions Copyright 1989 by the Massachusetts Institute of Technology   **//**                        Cambridge, Massachusetts                         **//**                                                                         **//**                           All Rights Reserved                           **//**                                                                         **//**    Permission to use, copy, modify, and distribute this software and    **//**    its documentation  for  any  purpose  and  without  fee is hereby    **//**    granted, provided that the above copyright notice appear  in  all    **//**    copies and that both  that  copyright  notice  and  this  permis-    **//**    sion  notice appear in supporting  documentation,  and  that  the    **//**    names of Evans & Sutherland and M.I.T. not be used in advertising    **//**    in publicity pertaining to distribution of the  software  without    **//**    specific, written prior permission.                                  **//**                                                                         **//**    EVANS & SUTHERLAND AND M.I.T. DISCLAIM ALL WARRANTIES WITH REGARD    **//**    TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES  OF  MERCHANT-    **//**    ABILITY  AND  FITNESS,  IN  NO  EVENT SHALL EVANS & SUTHERLAND OR    **//**    M.I.T. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL  DAM-    **//**    AGES OR  ANY DAMAGES WHATSOEVER  RESULTING FROM LOSS OF USE, DATA    **//**    OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER    **//**    TORTIOUS ACTION, ARISING OUT OF OR IN  CONNECTION  WITH  THE  USE    **//**    OR PERFORMANCE OF THIS SOFTWARE.                                     **//*****************************************************************************//**************************************************************************** * This module is based on Twm, but has been siginificantly modified  * by Rob Nation  ****************************************************************************//*********************************************************************** * The rest of it is all my fault -- MLM * mwm - "LessTif Window Manager" ***********************************************************************/#include <LTconfig.h>#include <Xm/Xm.h>#include <Xm/MwmUtil.h>#include "mwm.h"/**************************************************************************** * * <Desktop description> * ****************************************************************************//* * Unmaps a window on transition to a new desktop */static voidremove_from_desktop(ScreenInfo *scr, MwmWindow *t){    XWindowAttributes winattrs;    unsigned long eventMask;    /*     * Prevent the receipt of an UnmapNotify, since that would     * cause a transition to the Withdrawn state.     */    XGetWindowAttributes(dpy, t->w, &winattrs);    eventMask = winattrs.your_event_mask;    XSelectInput(dpy, t->w, eventMask & ~StructureNotifyMask);    if (t->flags & ICONIFIED)    {	if (t->icon_pixmap_w != None)	    XUnmapWindow(dpy, t->icon_pixmap_w);	if (t->icon_w != None)	    XUnmapWindow(dpy, t->icon_w);    }    else if (t->flags & (MAPPED | MAP_PENDING))    {	XUnmapWindow(dpy, t->frame);    }    XSelectInput(dpy, t->w, eventMask);    PAGER_UpdateView(scr, t);}/* * Maps a window on transition to a new desktop */static voidadd_to_desktop(ScreenInfo *scr, MwmWindow *t){    if (t->flags & ICONIFIED)    {	if (t->icon_pixmap_w != None)	    XMapWindow(dpy, t->icon_pixmap_w);	if (t->icon_w != None)	    XMapWindow(dpy, t->icon_w);    }    else if (t->flags & MAPPED)    {	XMapWindow(dpy, t->frame);	t->flags |= MAP_PENDING;	XMapWindow(dpy, t->parent);    }    PAGER_UpdateView(scr, t);}/* * save the desktop state */voidDT_SaveState(ScreenInfo *scr){    MwmWindow *t;    unsigned long data[1];    for (t = scr->mwm_root.next; t != NULL; t = t->next)    {	data[0] = (unsigned long)t->Desk;	XChangeProperty(dpy, t->w, XA_WM_DESKTOP, XA_WM_DESKTOP, 32,			PropModeReplace, (unsigned char *)data, 1);    }    data[0] = (unsigned long)scr->current_desk;    XChangeProperty(dpy, scr->root_win, XA_WM_DESKTOP, XA_WM_DESKTOP, 32,		    PropModeReplace, (unsigned char *)data, 1);    XSync(dpy, 0);}/* * Move to a new desktop */voidDT_ChangeDesks(ScreenInfo *scr, int val1, int val2){    int oldDesk;    MwmWindow *t;    MwmWindow *FocusWin = 0;    static MwmWindow *StickyWin = 0;    oldDesk = scr->current_desk;    if (val1 != 0)    {	scr->current_desk = scr->current_desk + val1;    }    else    {	scr->current_desk = val2;	if (scr->current_desk == oldDesk)	    return;    }    /* Scan the window list, mapping windows on the new Desk,     * unmapping windows on the old Desk */    XGrabServer(dpy);    for (t = scr->mwm_root.next; t != NULL; t = t->next)    {	/* Only change mapping for non-sticky windows */	if ((!(t->flags & STICKY)) && (!(t->flags & ICON_UNMAPPED)))	{	    if (t->Desk == oldDesk)	    {		if (scr->mwm_focus == t)		    t->FocusDesk = oldDesk;		else		    t->FocusDesk = -1;		remove_from_desktop(scr, t);	    }	    else if (t->Desk == scr->current_desk)	    {		add_to_desktop(scr, t);		if (t->FocusDesk == scr->current_desk)		{		    FocusWin = t;		}	    }	}	else	{	    /* Window is sticky */	    t->Desk = scr->current_desk;	    if (scr->mwm_focus == t)	    {		t->FocusDesk = oldDesk;		StickyWin = t;	    }	}    }    XUngrabServer(dpy);    for (t = scr->mwm_root.next; t != NULL; t = t->next)    {	/* If its an icon, and its sticking, autoplace it so	 * that it doesn't wind up on top a a stationary	 * icon */	if ((t->flags & STICKY) && (t->flags & ICONIFIED) &&	    (!(t->flags & ICON_MOVED)) && (!(t->flags & ICON_UNMAPPED)))	    ICON_AutoPlace(scr, t);    }    /* Better re-draw the pager now */    PAGER_Clear(scr);    if (Mwm.keyboard_focus_policy == XmEXPLICIT)    {	if (Mwm.auto_key_focus)	{	    if (FocusWin)	    {		WIN_SetFocusInTree(FocusWin);		WIN_SetFocus(scr, FocusWin->w, FocusWin);	    }	    else if (StickyWin && (StickyWin->flags && STICKY))	    {		WIN_SetFocusInTree(StickyWin);		WIN_SetFocus(scr, StickyWin->w, StickyWin);	    }	}	else        {	    WIN_SetFocus(scr, scr->no_focus_win, NULL);        }    }}/* * Move to a new desktop */voidDT_WindowChangingDesks(ScreenInfo *scr, MwmWindow *t, int val1){    if (val1 == t->Desk)	return;    /* Scan the window list, mapping windows on the new Desk,     * unmapping windows on the old Desk */    /* Only change mapping for non-sticky windows */    if ((!(t->flags & STICKY)) && (!(t->flags & ICON_UNMAPPED)))    {	if (t->Desk == scr->current_desk)	{	    t->Desk = val1;	    remove_from_desktop(scr, t);	}	else if (val1 == scr->current_desk)	{	    t->Desk = val1;	    /* If its an icon, auto-place it */	    if (t->flags & ICONIFIED)		ICON_AutoPlace(scr, t);	    add_to_desktop(scr, t);	}	else	    t->Desk = val1;    }    /* Better re-draw the pager now */    PAGER_Clear(scr);}