Java example source code file (SpanIterator.h)

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spaniteratorfuncs

The SpanIterator.h Java example source code

/*
 * Copyright (c) 1998, 2000, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

#ifndef _Included_SpanIterator
#define _Included_SpanIterator

/*
 * This structure defines the methods used to communicate with a
 * Java SpanIterator at the native level.
 */
typedef struct {
    /**
     * Init and return native data
     */
    void     *(*open)(JNIEnv *env, jobject iterator);

    /**
     * End iteration, dispose data
     */
    void      (*close)(JNIEnv *env, void *clientData);

    /**
     * See SpanIterator.getPathBox()
     */
    void      (*getPathBox)(JNIEnv *env, void *clientData, jint pathbox[]);

    /**
     * See ShapeSpanIterator.ShapeSIIntersectClipBox
     */
    void      (*intersectClipBox)(JNIEnv *env, void *clientData,
                                    jint lox, jint loy, jint hix, jint hiy);

    /**
     * See SpanIterator.nextSpan()
     */
    jboolean  (*nextSpan)(void *clientData, jint spanbox[]);

    /**
     * See SpanIterator.skipDownTo()
     */
    void      (*skipDownTo)(void *clientData, jint y);
} SpanIteratorFuncs;

#endif