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+/*
+Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in
+ the documentation and/or other materials provided with the
+ distribution.
+
+ - Neither the name of The Numerical ALgorithms Group Ltd. nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#ifndef _X10_H_
+#define _X10_H_
+
+/* Used in XDraw and XDrawFilled */
+
+typedef struct _Vertex {
+ short x, y;
+ unsigned short flags;
+} Vertex;
+
+/* The meanings of the flag bits. If the bit is 1 the predicate is true */
+
+#define VertexRelative 0x0001 /* else absolute */
+#define VertexDontDraw 0x0002 /* else draw */
+#define VertexCurved 0x0004 /* else straight */
+#define VertexStartClosed 0x0008 /* else not */
+#define VertexEndClosed 0x0010 /* else not */
+
+/*
+ The VertexDrawLastPoint option has not been implemented in XDraw and
+ XDrawFilled so it shouldn't be defined.
+*/
+
+/*
+ XAssoc - Associations used in the XAssocTable data structure. The
+ associations are used as circular queue entries in the association table
+ which is contains an array of circular queues (buckets).
+ */
+typedef struct _XAssoc {
+ struct _XAssoc *next; /* Next object in this bucket. */
+ struct _XAssoc *prev; /* Previous obejct in this bucket. */
+ Display *display; /* Display which ownes the id. */
+ XID x_id; /* X Window System id. */
+ char *data; /* Pointer to untyped memory. */
+} XAssoc;
+
+/*
+ XAssocTable - X Window System id to data structure pointer association
+ table. An XAssocTable is a hash table whose buckets are circular
+ queues of XAssoc's. The XAssocTable is constructed from an array of
+ XAssoc's which are the circular queue headers (bucket headers).
+ An XAssocTable consists an XAssoc pointer that points to the first
+ bucket in the bucket array and an integer that indicates the number
+ of buckets in the array.
+ */
+typedef struct _XAssocTable {
+ XAssoc **buckets; /* Pointer to first bucket in bucket array.*/
+ int size; /* Table size (number of buckets). */
+} XAssocTable;
+
+
+#endif /* _X10_H_ */
+