DESCRIPTION

	The RubberTile widget is a constraint widget which allows an application to
	layout its children either vertically or horizontally, and then assign relative
	weights to each child so that it absorbs a certain percentage of size changes.
	If the RubberTile is set with a vertical orientation, then the children will
	be layed out vertically in columns, each spanning the width of the RubberTile.  
	If the RubberTile is layed out horizontally, then the children we be placed in a row,
	each one's height spanning the height of the RubberTile.

	The RubberTile resizes it's children according to their specified value in the
	constraint resource, XtNweight.  To determine the percentage of the RubberTile's
	size change a child should absorb, the following formula is used:

	   child's size change percentage = child's XtNweight/sum of all children's XtNweights

	This widget is very useful when laying out panes in a window.  For example, if
	an application requires three panes layed out vertically, and the top pane is
	not to absorb any height changes, however the two lower panes are to each absorb
	half of the height changes, then the application can do the following:
	create a RubberTile with XtNorientation set to OL_VERTICAL, then create each
	child, assigning each the appropriate XtNweight constraint resource value:

		top pane -> 	XtNweight = 0 
		middle pane -> 	XtNweight = 1 
		bottom pane -> 	XtNweight = 1
	
		top pane's size change percentage    =  0 / (0 + 1 + 1) = 0%
		middle Pane's size change percentage =  1 / (0 + 1 + 1) = 50%
		bottom pane's size change percentage =  1 / (0 + 1 + 1) = 50% 
	

 	For more detailed and complete information on the RubberTile Widget, see the following
	Section in the OPEN LOOK Intrinsics Toolkit Widget Set Reference Manual:
		. RUBBERTILE (3W)


EXAMPLE CODE

The code below shows an example of how to create a RubberTile widget like the example shown
in the Table.
/****************************************************************************************/
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <Xol/OpenLook.h>
#include <Xol/RubberTile.h>

#include <Xol/StaticText.h>

main(argc, argv)
int argc;
char **argv;
{
	Widget toplevel, rubbertile, rt_text[3];

	toplevel = OlInitialize(argv[0], "Test", NULL,
						0, &argc, argv);

	/*
	 * Create a RubberTile container and lay it out vertically
 	 */
	rubbertile = XtVaCreateManagedWidget("tile",
					rubberTileWidgetClass,
					toplevel,
					XtNorientation,	(XtArgVal)OL_VERTICAL,
					NULL);

	/*
	 * Create StaticText Children in RubberTile and assign them their
 	 * resize-absorb weights...
	 */
	rt_text[0] = XtVaCreateManagedWidget("text",
					staticTextWidgetClass,
					rubbertile,
					XtNweight,	(XtArgVal)1,
					XtNstring,	(XtArgVal)"I Absorb 1/6 height changes",
					XtNgravity,	(XtArgVal)CenterGravity,
					XtNborderWidth,	(XtArgVal)1,
					NULL);
	rt_text[1] = XtVaCreateManagedWidget("text",
					staticTextWidgetClass,
					rubbertile,
					XtNweight,	(XtArgVal)2,
					XtNstring,	(XtArgVal)"I get 1/3 height changes",
					XtNgravity,	(XtArgVal)CenterGravity,
					XtNborderWidth,	(XtArgVal)1,
					NULL);

	rt_text[2] = XtVaCreateManagedWidget("text",
					staticTextWidgetClass,
					rubbertile,
					XtNweight,	(XtArgVal)3,
					XtNstring,	(XtArgVal)"I Get 1/2 height changes",
					XtNgravity,	(XtArgVal)CenterGravity,
					XtNborderWidth,	(XtArgVal)1,
					NULL);

	/*
	 * Realize widgets and enter event loop...
	 */

	XtRealizeWidget(toplevel);
	XtMainLoop();

}
/*******************************END EXAMPLE******************************/	
	
	
RESOURCES
_______________________________________________________________________________________________
Resource Name		Type		Default		Brief Description
_______________________________________________________________________________________________

RubberTile Resource Set (these are set directly on the RubberTile widget):

XtNancestorSensitive	Boolean		TRUE		Will immediate parent receive events?
XtNbackground		Pixel		White		background color of widget
XtNbackgroundPixmap	Pixmap		(none)		pixmap used for tiling the background
XtNborderColor		Pixel		Black		border color of widget
XtNborderPixmap		Pixmap		(none)		pixmap used for tiling the border
XtNborderWidth		Dimension	0		width of widget's border in pixels
XtNconsumeEvent		XtCallbackList	NULL		called when event occurs
XtNdestroyCallback	XtCallbackList	NULL		routines called when widget is destroyed 
XtNheight		Dimension	(calculated)	height of widget's window in pixels
XtNmappedWhenManaged	Boolean		TRUE		will widget be mapped when managed?
XtNorientation		OlDefine	OL_VERTICAL	what direction will widget layout children?
XtNsensitive		Boolean		TRUE		will widget receive input events?
XtNuserData		XtPointer	NULL		storage for user defined data
XtNwidth		Dimension	(calculated)	width of widget's window in pixels
XtNx			Position	0		x coord of widget's upper left corner
XtNy			Position	0		y coord of widget's uuper left corner


Constraint Resouce Set (these are set on the RubberTile's children to define spatial relationships):

XtNrefName		String		NULL		see Widget man page
XtNrefWidget		Widget		NULL		see Widget man page
XtNspace		Dimension	0		distance (offset) from reference widget
XtNweight		Dimension	1		relative proportion of absorbed size changes