/* Layout.c */


/***********************************************************
Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts,
and 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 permission notice appear in 
supporting documentation, and that the names of Digital or MIT not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES 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.

******************************************************************/


/* 
 * Layout.c - Layout composite widget
 * 
 */

#include	<X11/IntrinsicP.h>
#include	<X11/StringDefs.h>
#include	"LayoutP.h"

/****************************************************************
 *
 * Layout Resources
 *
 ****************************************************************/

/* no new resources defined */

/****************************************************************
 *
 * Full class record constant
 *
 ****************************************************************/

static void Initialize();
static void Realize();
static void Resize();
static XtGeometryResult GeometryManager();
static void ChangeManaged();

LayoutClassRec layoutClassRec = {
  {
/* core_class fields      */
    /* superclass         */    (WidgetClass) &compositeClassRec,
    /* class_name         */    "Layout",
    /* widget_size        */    sizeof(LayoutRec),
    /* class_initialize   */    NULL,
    /* class_part_init    */	NULL,
    /* class_inited       */	FALSE,
    /* initialize         */    Initialize,
    /* initialize_hook    */	NULL,
    /* realize            */    Realize,
    /* actions            */    NULL,
    /* num_actions	  */	0,
    /* resources          */    NULL,
    /* num_resources      */    0,
    /* xrm_class          */    NULLQUARK,
    /* compress_motion	  */	TRUE,
    /* compress_exposure  */	TRUE,
    /* compress_enterleave*/	TRUE,
    /* visible_interest   */    FALSE,
    /* destroy            */    NULL,
    /* resize             */    XtInheritResize,
    /* expose             */    NULL,
    /* set_values         */    NULL,
    /* set_values_hook    */	NULL,
    /* set_values_almost  */    XtInheritSetValuesAlmost,
    /* get_values_hook    */	NULL,
    /* accept_focus       */    NULL,
    /* version            */	XtVersion,
    /* callback_private   */    NULL,
    /* tm_table           */    NULL,
    /* query_geometry     */	NULL,
    /* display_accelerator*/	XtInheritDisplayAccelerator,
    /* extension          */	NULL
  },{
/* composite_class fields */
    /* geometry_manager   */    GeometryManager,
    /* change_managed     */    ChangeManaged,
    /* insert_child	  */	XtInheritInsertChild,
    /* delete_child	  */	XtInheritDeleteChild,
    /* extension          */	NULL
  },{
/* Layout class fields */
    /* empty		  */	0,
  }
};

WidgetClass layoutWidgetClass = (WidgetClass)&layoutClassRec;


/****************************************************************
 *
 * Private Routines
 *
 ****************************************************************/

/*
 *
 * Geometry Manager
 *
 * lets the child do whatever it wants to
 *
 */

/*ARGSUSED*/
static XtGeometryResult GeometryManager(w, request, reply)
    Widget		w;
    XtWidgetGeometry	*request;
    XtWidgetGeometry	*reply;	/* RETURN */

{
    if (request->request_mode & (CWX | CWY | CWWidth | CWHeight | CWBorderWidth)) 
	{
	if ((request->request_mode & CWWidth) == 0)
	    request->width = w->core.width;
	if ((request->request_mode & CWHeight) == 0)
	    request->height = w->core.height;
        if ((request->request_mode & CWBorderWidth) == 0)
	    request->border_width = w->core.border_width;
	if ((request->request_mode & CWX) == 0)
	    request->x = w->core.x;
	if ((request->request_mode & CWY) == 0)
	    request->y = w->core.y;

	w->core.x = request->x;
	w->core.y = request->y;
	w->core.width = request->width;
	w->core.height = request->height;
	w->core.border_width = request->border_width;
	}

    return (XtGeometryYes);
}


static void ChangeManaged(w)
    Widget w;
{
	/* don't care if anything goes away or not */
}

/* ARGSUSED */
static void Initialize(request, new)
    Widget request, new;
{
    LayoutWidget newlw = (LayoutWidget)new;

    /* default size is 10x10 */

    if( newlw->core.width == 0 )
	newlw->core.width = 10;
    if( newlw->core.height == 0 )
	newlw->core.height = 10;
    
    newlw->layout.last_query_mode = CWWidth | CWHeight;
    newlw->layout.last_query_width = newlw->core.width;
    newlw->layout.last_query_height = newlw->core.height;

} /* Initialize */

static void Realize(w, valueMask, attributes)
    register Widget w;
    Mask *valueMask;
    XSetWindowAttributes *attributes;
{
    attributes->bit_gravity = NorthWestGravity;
    *valueMask |= CWBitGravity;

    XtCreateWindow( w, (unsigned)InputOutput, (Visual *)CopyFromParent,
		    *valueMask, attributes);
} /* Realize */