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XkbComputeShapeTop(3)            XKB FUNCTIONS           XkbComputeShapeTop(3)



NAME
       XkbComputeShapeTop  - Determines the bounding box of the top surface of
       a shape

SYNOPSIS
       Bool XkbComputeShapeTop ( shape, bounds_rtrn )
             XkbShapePtr shape;
             XkbBoundsPtr bounds_rtrn;

ARGUMENTS
       - shape
              shape to be examined

       - bounds_rtrn
              backfilled with the bounding box for the shape

DESCRIPTION
       Xkb provides a number of convenience functions to help use  a  keyboard
       geometry.   These  include  functions  to  return the bounding box of a
       shape's top surface and to update the bounding box of a  shape  row  or
       section.

       A  shape  is made up of a number of outlines. Each outline is a polygon
       made up of a number of points. The bounding box of a shape is a rectan-
       gle that contains all the outlines of that shape.

       XkbComputeShapeTop  returns a BoundsRec that contains two x and y coor-
       dinates. These coordinates describe the corners  of  a  rectangle  that
       contains  the  outline that describes the top surface of the shape. The
       top surface is defined to be the approximating outline  if  the  approx
       field  of  shape  is  not  NULL.  If approx is NULL, the top surface is
       defined as the last outline in the shape's array of outlines.   XkbCom-
       puteShapeTop returns False if shape is NULL or if there are no outlines
       for the shape; otherwise, it returns True.

STRUCTURES
       typedef struct _XkbBounds {
            short     x1,y1;    /* upper left corner of the bounds, in mm/10 */
            short     x2,y2;    /* lower right corner of the bounds, in mm/10 */
       } XkbBoundsRec, *XkbBoundsPtr;




X Version 11                     libX11 1.1.5            XkbComputeShapeTop(3)