1XkbComputeShapeTop(3)            XKB FUNCTIONS           XkbComputeShapeTop(3)
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NAME

6       XkbComputeShapeTop  - Determines the bounding box of the top surface of
7       a shape
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SYNOPSIS

10       Bool XkbComputeShapeTop (XkbShapePtr shape, XkbBoundsPtr bounds_rtrn);
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ARGUMENTS

13       - shape
14              shape to be examined
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16       - bounds_rtrn
17              backfilled with the bounding box for the shape
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DESCRIPTION

20       Xkb provides a number of convenience functions to help use  a  keyboard
21       geometry.   These  include  functions  to  return the bounding box of a
22       shape's top surface and to update the bounding box of a  shape  row  or
23       section.
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25       A  shape  is made up of a number of outlines. Each outline is a polygon
26       made up of a number of points. The bounding box of a shape is a rectan‐
27       gle that contains all the outlines of that shape.
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29       XkbComputeShapeTop  returns a BoundsRec that contains two x and y coor‐
30       dinates. These coordinates describe the corners  of  a  rectangle  that
31       contains  the  outline that describes the top surface of the shape. The
32       top surface is defined to be the approximating outline  if  the  approx
33       field  of  shape  is  not  NULL.  If approx is NULL, the top surface is
34       defined as the last outline in the shape's array of outlines.   XkbCom‐
35       puteShapeTop returns False if shape is NULL or if there are no outlines
36       for the shape; otherwise, it returns True.
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STRUCTURES

39       typedef struct _XkbBounds {
40            short     x1,y1;    /∗ upper left corner of the bounds, in mm/10 */
41            short     x2,y2;    /∗ lower right corner of the bounds, in mm/10 */
42       } XkbBoundsRec, *XkbBoundsPtr;
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47X Version 11                     libX11 1.6.9            XkbComputeShapeTop(3)