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.\" Copyright 1999 Sun Microsystems, Inc. All rights reserved.
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.\"
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2007-09-30 04:11:57 -06:00
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.\" Permission is hereby granted, free of charge, to any person obtaining a
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.\" copy of this software and associated documentation files (the "Software"),
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.\" to deal in the Software without restriction, including without limitation
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.\" the rights to use, copy, modify, merge, publish, distribute, sublicense,
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.\" and/or sell copies of the Software, and to permit persons to whom the
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.\" Software is furnished to do so, subject to the following conditions:
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.\"
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.\" The above copyright notice and this permission notice (including the next
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.\" paragraph) shall be included in all copies or substantial portions of the
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.\" Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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.\" THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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.\" LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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.\" FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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.\" DEALINGS IN THE SOFTWARE.
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.\"
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.TH XkbComputeShapeTop __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
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.SH NAME
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XkbComputeShapeTop \- Determines the bounding box of the top surface of a shape
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.SH SYNOPSIS
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.HP
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.B Bool XkbComputeShapeTop
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.BI "(\^XkbShapePtr " "shape" "\^,"
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.BI "XkbBoundsPtr " "bounds_rtrn" "\^);"
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.if n .ti +5n
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.if t .ti +.5i
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.SH ARGUMENTS
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.TP
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.I \- shape
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shape to be examined
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.TP
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.I \- bounds_rtrn
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backfilled with the bounding box for the shape
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.SH DESCRIPTION
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.LP
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Xkb provides a number of convenience functions to help use a keyboard geometry.
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These include functions to return the bounding box of a shape's top surface and
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to update the bounding box of a shape row or section.
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A shape is made up of a number of outlines. Each outline is a polygon made up of
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a number of points. The bounding box of a shape is a rectangle that contains all
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the outlines of that shape.
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.I XkbComputeShapeTop
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returns a BoundsRec that contains two x and y coordinates. These coordinates
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describe the corners of a rectangle that contains the outline that describes the
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top surface of the shape. The top surface is defined to be the approximating
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outline if the
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.I approx
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field of
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.I shape
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is not NULL. If
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.I approx
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is NULL, the top surface is defined as the last outline in the
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.I shape's
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array of outlines.
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.I XkbComputeShapeTop
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returns False if
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.I shape
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is NULL or if there are no outlines for the shape; otherwise, it returns True.
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.SH STRUCTURES
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.LP
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.nf
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typedef struct _XkbBounds {
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short x1,y1; /\(** upper left corner of the bounds, in mm/10 */
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short x2,y2; /\(** lower right corner of the bounds, in mm/10 */
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} XkbBoundsRec, *XkbBoundsPtr;
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.fi
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