/*	GEMMNLIB.C	04/26/84 - 08/14/86	Lowell Webster		*/
/*	merge High C vers. w. 2.2 		8/21/87		mdf	*/ 
/*	fix mn_bar -- bar too wide		11/19/87	mdf	*/

/*
*       Copyright 1999, Caldera Thin Clients, Inc.                      
*       This software is licenced under the GNU Public License.         
*       Please see LICENSE.TXT for further information.                 
*                                                                       
*                  Historical Copyright                                 
*	-------------------------------------------------------------
*	GEM Application Environment Services		  Version 3.0
*	Serial No.  XXXX-0000-654321		  All Rights Reserved
*	Copyright (C) 1987			Digital Research Inc.
*	-------------------------------------------------------------
*/

#include <portab.h>
#include <machine.h>
#include <struct.h>
#include <basepage.h>
#include <obdefs.h>
#include <taddr.h>
#include <gemlib.h>
						/* in BB.C		*/
EXTERN	VOID	bb_restore();
EXTERN	VOID	bb_save();
						/* in EVLIB.C		*/
EXTERN	WORD	ev_multi();
						/* in OBLIB.C		*/
EXTERN	WORD	ob_find();
EXTERN	VOID	ob_draw();
EXTERN	VOID	ob_change();
						/* in OBED.C		*/
EXTERN	VOID	ob_actxywh();

EXTERN PD	*fpdnm();

EXTERN VOID 	w_nilit();			/* in WMLIB.C		*/
EXTERN VOID	ap_sendmsg();
EXTERN VOID	ob_relxywh();			/* in OBLIB.C		*/
EXTERN VOID 	ob_setxywh();
EXTERN WORD 	strlen();			/* in OPTIMOPT.A86	*/
EXTERN VOID 	rc_copy();
EXTERN VOID 	movs();
EXTERN VOID	gsx_sclip();			/* in GRAF.C		*/
EXTERN VOID	gsx_cline();
EXTERN VOID	post_keybd();			/* in INPUT.C		*/

EXTERN WORD	gl_width;
EXTERN WORD	gl_hbox;
EXTERN GRECT	gl_rzero;
EXTERN GRECT	gl_rmenu;

EXTERN WORD	gl_wchar;
EXTERN WORD	gl_hchar;

EXTERN WORD	appl_msg[];
EXTERN PD	*ctl_pd;
EXTERN MOBLK	gl_ctwait;

EXTERN WORD	button;
EXTERN WORD	gl_mnclick;

GLOBAL LONG	gl_mntree;
GLOBAL PD	*gl_mnppd;

GLOBAL LONG	desk_acc[NUM_DESKACC];
GLOBAL PD	*desk_ppd[NUM_DESKACC];
GLOBAL LONG	menu_tree[NUM_PDS];

GLOBAL BYTE	menu_name[11];

GLOBAL BYTE	*desk_str[NUM_DESKACC] = 
{
	"  0345678901234567890",
	"  1345678901234567890",
	"  2345678901234567890",
	"  3345678901234567890",
	"  4345678901234567890",
	"  5345678901234567890",
	"  6345678901234567890",
	"  7345678901234567890",
#if SINGLAPP
	"  8345678901234567890"
};
#endif
#if MULTIAPP
	"  8345678901234567890",
	"  9345678901234567890",
	"  1045678901234567890",
	"  1145678901234567890",
	"  1245678901234567890",
	"  1345678901234567890",
	"  1445678901234567890",
	"  1545678901234567890",
	"  1645678901234567890"
};
#endif

GLOBAL WORD	gl_dacnt;
GLOBAL WORD	gl_dabox;
GLOBAL LONG	gl_datree;

GLOBAL OBJECT	M_DESK[3+NUM_DESKACC];

#if MULTIAPP
EXTERN SHELL	sh[];

OBJECT	gl_sysmenu[10] = {
-1,  1,  4,  G_IBOX, NONE, NORMAL,       0x0L, 0, 0, 80, 25, /* SCREEN   */
 4,  2,  2,   G_BOX, NONE, NORMAL,    0x1100L, 0, 0, 80,513, /* BAR      */
 1,  3,  3,  G_IBOX, NONE, NORMAL,       0x0L, 2, 0, 20,769, /* ACTIVE   */
 2, -1, -1, G_TITLE, NONE, NORMAL,       0x0L, 0, 0,  8,769, /* TITLE #1 */ 
 0, -1, -1,  G_IBOX, NONE, NORMAL,	 0x0L, 0,769,80, 19  /* MENUS    */
};

GLOBAL LONG	ad_sysmenu; 
GLOBAL WORD	gl_mninit = FALSE;

mn_init() /* initialize default menu */
{
	WORD	i;

	if (gl_mninit)
    return;
	ad_sysmenu = ADDR(gl_sysmenu);
	for (i=0; i<=4; i++)
	  rs_obfix(ad_sysmenu, i);
	gl_sysmenu[3].ob_spec = ADDR(" SWITCH ");
	menu_tree[1] = ad_sysmenu;
}
#endif

/*
*	Routine to find a desk accessory id number given a process descriptor.
*/
	WORD
mn_getda(ppd)
	PD		*ppd;
{
	REG WORD	i;

	for (i=0; i<NUM_DESKACC; i++)
	{
	  if (ppd == desk_ppd[i])
	    return(i);
	}
	return(0);
}


	VOID
menu_fixup(pname)
	BYTE		*pname;
{
	REG OBJECT	*pob;
	GRECT		t;
	WORD		i, cnt, st, desktitle, imenu, offw;
	GRECT		ta, dt, tmp;
	LONG		tree;

	if ( (tree = gl_mntree) == 0x0L )
	  return;

	w_nilit(3 + NUM_DESKACC, &M_DESK[0]);
						
	gl_dabox = LWGET(OB_HEAD(THEMENUS));
	gl_datree = ADDR( pob = &M_DESK[ROOT] );

	desktitle = LWGET(OB_HEAD(THEACTIVE));
	ob_relxywh(tree, desktitle, &dt);
	ob_relxywh(tree, THEACTIVE, &ta);
						/* if desk title not	*/
						/*   moved then move it	*/
	menu_name[0] = menu_name[9] = ' ';
	movs(8, pname, &menu_name[1]);
	menu_name[10] = NULL;
	LLSET( OB_SPEC(desktitle), ADDR(&menu_name[0]) );

	if (dt.g_x == 0x0)
	{
	  offw = dt.g_w;

	  dt.g_w = strlen( &menu_name[0] ) * gl_wchar; 

	  dt.g_x = gl_width - dt.g_w - ta.g_x - ta.g_x;
	  ta.g_w = (dt.g_x - ta.g_x) + dt.g_w - 1;
	  ob_setxywh(tree, THEACTIVE, &ta);
	  ob_setxywh(tree, desktitle, &dt);
	  i = desktitle;
						
	  while ( (i = LWGET(OB_NEXT(i))) > desktitle )
	  {
	    ob_relxywh(tree, i, &tmp);
	    tmp.g_x -= offw;
	    ob_setxywh(tree, i, &tmp);
	    imenu = menu_sub(&tree, i);
	    ob_relxywh(tree, imenu, &tmp);
	    tmp.g_x -= offw;
	    ob_setxywh(tree, imenu, &tmp);
	  }
	}
						/* fix up desk root	*/
	pob->ob_type = G_BOX;
	pob->ob_state = pob->ob_flags = 0x0;
	pob->ob_spec = 0x00FF1100L;
	ob_actxywh(tree, gl_dabox, &pob->ob_x);
	pob->ob_x = gl_width - pob->ob_width - ta.g_x;

	cnt = (gl_dacnt) ? (2 + gl_dacnt) : 1;
						/* fix up links		*/
#if MULTIAPP
	pob->ob_head = 3;
#endif
#if SINGLAPP
	pob->ob_head = 1;
#endif
	pob->ob_tail = cnt;
						/* build up desk items	*/
	ob_relxywh(tree, gl_dabox + 1, &t);
#if MULTIAPP
	for(i=3; i<=cnt; i++)
#endif
#if SINGLAPP
	for(i=1; i<=cnt; i++)
#endif
	{
	  pob = &M_DESK[i];
	  pob->ob_next = i+1;
	  pob->ob_type = G_STRING;
	  pob->ob_state = pob->ob_flags = 0x0;
	  if (i > 2)
	  {
	    st = i-3;
	    while( !desk_acc[st] )
	      st++;
	    pob->ob_spec = desk_acc[st];
	  }
	  else
	    pob->ob_spec = LLGET(OB_SPEC(gl_dabox+i));
	  rc_copy(&t, &pob->ob_x);
	  t.g_y += gl_hchar;
	}
						/* link back to root	*/
	pob->ob_next = 0;
						/* fix up size		*/
	M_DESK[ROOT].ob_height = t.g_y;
						/* fix up disabled line	*/
	M_DESK[2].ob_state = DISABLED;
}


/*
*	Change a mouse-wait rectangle based on an object's size.
*/
	VOID
rect_change(tree, prmob, iob, x)
	LONG		tree;
	MOBLK		*prmob;
	WORD		iob;
	WORD		x;
{
	ob_actxywh(tree, iob, &prmob->m_x);
	prmob->m_out = x;
}



/*
*	Routine to change the state of a particular object.  The
*	change in state will not occur if the object is disabled
*	and the chkdisabled parameter is set.  The object will
*	be drawn with its new state only if the dodraw parameter
*	is set.
*/

	UWORD
do_chg(tree, iitem, chgvalue, dochg, dodraw, chkdisabled)
	REG LONG	tree;			/* tree that holds item	*/
	WORD		iitem;			/* item to affect	*/
	REG UWORD	chgvalue;		/* bit value to change	*/
	WORD		dochg;			/* set or reset value	*/
	WORD		dodraw;			/* draw resulting change*/
	WORD		chkdisabled;		/* only if item enabled	*/
{
	REG UWORD	curr_state;

	curr_state = LWGET(OB_STATE(iitem));
	if ( (chkdisabled) &&
	     (curr_state & DISABLED) )
	  return(FALSE);
	
	if ( dochg )
	  curr_state |= chgvalue;
	else
	  curr_state &= ~chgvalue;

	if (dodraw)
	  gsx_sclip(&gl_rzero);
	
	ob_change(tree, iitem, curr_state, dodraw);
	return(TRUE);
}


/*
*	Routine to set and reset values of certain items if they
*	are not the current item
*/
	WORD
menu_set(tree, last_item, cur_item, setit)
	LONG		tree;
	REG WORD	last_item;
	WORD		cur_item;
	WORD		setit;
{
	if ( (last_item != NIL) &&
	     (last_item != cur_item) )
	{
	  return( do_chg( tree, last_item, SELECTED, setit, TRUE, TRUE) );
	}
	return(FALSE);
}

/*
*	Routine to save or restore the portion of the screen underneath
*	a menu tree.  This involves BLTing out and back
*	the data that was underneath the menu before it was pulled
*	down.
*/
	VOID
menu_sr(saveit, tree, imenu)
	WORD		saveit;
	REG LONG	tree;
	WORD		imenu;
{
	GRECT		t;
						/* do the blit to save	*/
						/*   or restore		*/
	gsx_sclip(&gl_rzero);	
	ob_actxywh(tree, imenu, &t);
	t.g_x -= MTH;
	t.g_w += 2*MTH;
	t.g_h += 2*MTH;
	if (saveit)
	  bb_save(&t);
	else
	  bb_restore(&t);
}


	WORD
menu_sub(ptree, ititle)
	LONG		*ptree;
	WORD		ititle;
{
	LONG		tree;
	WORD		imenu;
	WORD		i;

	tree = *ptree;
						/* correlate title #	*/
						/*   to menu subtree #	*/
	imenu = LWGET(OB_HEAD(THEMENUS));
	for (i=ititle-THEACTIVE; i>1; i--)
	  imenu = LWGET(OB_NEXT(imenu));
						/* special case desk acc*/
	if (imenu == gl_dabox)	
	{
	  *ptree = gl_datree;
	  imenu = 0;
	}

	return(imenu);
}



/*
*	Routine to pull a menu down.  This involves saving the data
*	underneath the menu and drawing in the proper menu sub-tree.
*/
	WORD
menu_down(ititle)
	REG WORD	ititle;
{
	LONG		tree;
	REG WORD	imenu;

	tree = gl_mntree;
	imenu = menu_sub(&tree, ititle);
						/* draw title selected	*/
	if ( do_chg(gl_mntree, ititle, SELECTED, TRUE, TRUE, TRUE) )
	{
						/* save area underneath	*/
						/*   the menu		*/
	  menu_sr(TRUE, tree, imenu);
						/* draw all items in menu */
	  ob_draw(tree, imenu, MAX_DEPTH);
	}
	return(imenu);
}


	WORD
mn_do(ptitle, pitem)
	WORD		*ptitle, *pitem;
{
	REG LONG	tree;
	LONG		buparm, cur_tree, last_tree;
	WORD		mnu_flags, done;
	REG WORD	cur_menu, cur_item, last_item;
	WORD		cur_title, last_title;
	UWORD		ev_which;
	MOBLK		p1mor, p2mor;
	WORD		menu_state, theval;
	WORD		rets[6];

						/* initially wait to	*/
						/*   go into the active	*/
						/*   part of the bar	*/
						/*   or the button state*/
						/*   to change		*/
						/*   or out of the bar	*/
						/*   when nothing is	*/
						/*   down		*/
	menu_state = INBAR;

	done = FALSE;
	buparm = 0x00010101L;
	cur_title = cur_menu = cur_item = NIL;
	cur_tree = tree = gl_mntree;
	
	while (!done)
	{
						/* assume menustate is	*/
						/*   the OUTTITLE case	*/
	  mnu_flags = MU_KEYBD | MU_BUTTON | MU_M1;
	  last_tree = tree;
	  last_item = cur_title;
	  theval = TRUE;
						/* switch on menu state	*/
	  switch (menu_state)
	  {
	    case INBAR:
		mnu_flags |= MU_M2;
		last_item = THEBAR;
		break;
	    case INBARECT:
		mnu_flags |= MU_M2;
		last_item = cur_menu;
		theval = FALSE;
		if (last_item == 0)
		  last_tree = gl_datree;
		break;
	    case OUTITEM:
		last_tree = cur_tree;
		last_item = cur_item;
		buparm = (button & 0x0001) ? 0x00010100L : 0x00010101L;
		break;
	  }
						/* set up rects. to	*/
						/*   wait for		*/
	  if (last_item == NIL)
	    last_item = THEBAR;
	  if (mnu_flags & MU_M2)
	  {
	    rect_change(last_tree, &p2mor, last_item, theval);
	    last_tree = tree;
	    last_item = THEACTIVE;
	    theval = FALSE;
	  }
	  rect_change(last_tree, &p1mor, last_item, theval);
						/* wait for something	*/
	  rets[5] = 0;
	  ev_which = ev_multi(mnu_flags, &p1mor, &p2mor, 0x0L,
				buparm, 0x0L, &rets[0]);
						/* if its a button and	*/
						/*   not in a title then*/
						/*   done else flip state*/
	  if ( ev_which & MU_BUTTON )
	  {
	    if ( (menu_state != OUTTITLE) &&
	         ((buparm & 0x00000001) || (gl_mnclick != 0)) )
	      done = TRUE;
	    else
	      buparm ^= 0x00000001;
	  }
						/* if not done then do	*/
						/*   menus		*/
	  if ( !done )
	  {
						/* save old values	*/
	    last_title = cur_title;
	    last_item = cur_item;
						/* see if over the bar	*/

	    cur_title = ob_find( tree, THEACTIVE, 1, rets[0], rets[1] );
	    if ( (cur_title != NIL) && (cur_title != THEACTIVE) )
	    {
	      menu_state = OUTTITLE;
	      if ((gl_mnclick == 0) || (rets[5] == 1))
	        cur_item = NIL;
	      else
	        cur_title = last_title;
	    }
	    else
	    {
	      cur_title = last_title;
	      					/* if menu never shown	*/
						/*  nothing selected.	*/
	      if (cur_menu == NIL)
	        cur_title = NIL;
						/* if nothing selected	*/
						/*  get out.		*/
	      if (cur_title == NIL)
	      {
		menu_state = INBAR;
		done = TRUE;
	      }
	      else
	      {
	        cur_item = ob_find(cur_tree, cur_menu, 1, rets[0], rets[1]);
		if (cur_item != NIL)
		  menu_state = OUTITEM;
		else
		{
		  if ( (LWGET(OB_STATE(cur_title))) & DISABLED )
		  {
		    menu_state = INBAR;
		    cur_title = NIL;
		    done = TRUE;
		  }
		  else
		    menu_state = INBARECT;
		}
	      }
	    }
						/* unhilite old item	*/
	    menu_set(cur_tree, last_item, cur_item, FALSE);
						/* unhilite old title &	*/
						/*   pull up old menu	*/
	    if ( menu_set(tree, last_title, cur_title, FALSE) )
	      menu_sr(FALSE, cur_tree, cur_menu);
						/* hilite new title & 	*/
						/*   pull down new menu	*/
	    if ( menu_set(tree, cur_title, last_title, TRUE) )
	    {
	      cur_menu = menu_down(cur_title);
						/* special case desk acc*/
	      cur_tree = (cur_menu == 0) ? gl_datree : gl_mntree;
	    }
						/* hilite new item	*/
	    menu_set(cur_tree, cur_item, last_item, TRUE);
	  }
	}
						/* decide what should	*/
						/*   be cleaned up and	*/
						/*   returned		*/
	done = FALSE;
	if ( cur_title != NIL )
	{
	  menu_sr(FALSE, cur_tree, cur_menu);
	  if ( (cur_item != NIL) &&
	       ( do_chg( cur_tree, cur_item, SELECTED, FALSE, FALSE, TRUE) ) )
	  {
						/* only return TRUE when*/
						/*   item is enabled and*/
						/*   is not NIL		*/
	     *ptitle = cur_title;
	     *pitem = cur_item;
	     done = TRUE;
	  }
	  else
	    do_chg( tree, cur_title, SELECTED, FALSE, TRUE, TRUE);
	}
	return(done);
}


/*
*	Routine to display the menu bar.  Clipping is turned completely
*	off so that this operation will be as fast as possible.  The
*	global variable gl_mntree which is used in CTLMGR88.C is also
*	set or reset.
*/
	VOID
mn_bar(tree, showit, pid)
	REG LONG	tree;
	WORD		showit;
	WORD		pid;
{
	PD		*p;

	p = fpdnm(NULLPTR, pid);
	
	if ( showit )
	{
	  gl_mnppd = p;
	  menu_tree[pid] = gl_mntree = tree;
	  menu_fixup(&p->p_name[0]);
	  LWSET(OB_WIDTH(1), gl_width - LWGET(OB_X(1)));
	  ob_actxywh(gl_mntree, THEACTIVE, &gl_ctwait.m_x);
	  gsx_sclip(&gl_rzero);
	  ob_draw(gl_mntree, THEBAR, MAX_DEPTH);
	  gsx_cline(0, gl_hbox - 1, gl_width - 1, gl_hbox - 1);
	}
	else
	{
	  menu_tree[pid] = gl_mntree = 0x0L;
	  rc_copy(&gl_rmenu, &gl_ctwait.m_x);
	}
						/* make ctlmgr fix up	*/
						/*   the size of rect 	*/
						/*   its waiting for	*/
						/*   by sending fake key*/
	post_keybd(ctl_pd->p_cda, 0x0000);
}

#if SINGLAPP
/*
*	Routine to tell all desk accessories that the currently running
*	application is about to terminate.
*/
	VOID
mn_clsda()
{
	REG WORD	i;

	for (i=0; i<NUM_DESKACC; i++)
	{
	  if (desk_ppd[i])
	    ap_sendmsg(appl_msg, AC_CLOSE, desk_ppd[i], i, 0, 0, 0, 0);
	}
}
#endif

/*
*	Routine to register a desk accessory item on the menu bar.
*	The return value is the object index of the menu item that
*	was added.
*/
	WORD
mn_register(pid, pstr)
	REG WORD	pid;
	REG LONG	pstr;
{
	WORD		openda;
	WORD		len;
	BYTE		*ptmp;
#if MULTIAPP
	LONG		pdest;
#endif
						/* add desk acc. if room*/
	if ( (pid >= 0) &&
	     (gl_dacnt < NUM_DESKACC) )
	{
	  gl_dacnt++;
	  openda = 0;
	  while( desk_acc[openda] )
	    openda++;
	  desk_ppd[openda] = rlr;
	  desk_acc[openda] = ADDR(desk_str[openda]);

#if MULTIAPP
	  pdest = desk_acc[openda];
	  if (sh[pid].sh_isacc)
	  {
	    LBSET(pdest, '*');
	    pdest += 1;
	  }
	  len = LSTCPY(pdest, pstr);
#endif
#if SINGLAPP
	  len = LSTCPY(desk_acc[openda], pstr);
#endif
	  ptmp = desk_str[openda] + len + 1;
	  while( *ptmp == ' ' )
	  {
	    *ptmp = NULL;
	    ptmp--;
	  } 
	  strcat(" ", desk_str[openda]);

	  menu_fixup(&rlr->p_name[0]);
	  return(openda);
	}
	else
	  return(-1);
}	


/*
*	Routine to unregister a desk accessory item on the menu bar.
*/
	VOID
mn_unregister(da_id)
	WORD		da_id;
{
	WORD i, j;

	for (i=da_id; i<gl_dacnt-1; i++)
	{ 
	  for (j=0; j<22; j++)
	    *(desk_str[i]+j) = *(desk_str[i+1]+j);
	  desk_ppd[i] = desk_ppd[i+1];
	}
	gl_dacnt--;
	desk_ppd[gl_dacnt] = (PD *)0x0;
	desk_acc[gl_dacnt] = 0x0L;
#if SINGLAPP
	menu_fixup(&rlr->p_name[0]);
#endif
}	

#if MULTIAPP
/*
*	Given a PD * , find its desk accessory id
*/
	WORD
mn_ppdtoid(p)
	PD	*p;
{
	WORD i;

	for (i=0; i<NUM_DESKACC; i++)
	  if (desk_ppd[i] == p) 
	    return(i);
	return(NIL);	 			/* should never get here*/
}
#endif