Quellcode-Bibliothek

^© Kompilation durch diese Firma

[Weder Korrektheit noch Funktionsfähigkeit der Software werden zugesichert.]

Datei: WriteAbortTest.java Sprache: C

/*
* Copyright (c) 2016, 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.
*
* 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.
*/

/*
* @test
* @bug     8164931
* @summary Test verifies that if we call ImageWriter.abort() in
*          IIOWriteProgressListener.imageStarted() or
*          IIOWriteProgressListener.imageProgress() are we
*          calling IIOWriteProgressListener.readAborted() for all readers.
* @run     main WriteAbortTest
*/
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import javax.imageio.stream.ImageInputStream;
import java.awt.Color;
import java.awt.Graphics2D;
import java.nio.file.Files;
import javax.imageio.ImageWriter;
import javax.imageio.event.IIOWriteProgressListener;
import javax.imageio.stream.ImageOutputStream;

public class WriteAbortTest implements IIOWriteProgressListener {

    ImageWriter writer = null;
    ImageOutputStream ios = null;
    BufferedImage bimg = null;
    File file;
    boolean startAbort = false;
    boolean startAborted = false;
    boolean progressAbort = false;
    boolean progressAborted = false;
    Color srccolor = Color.red;
    int width = 100;
    int heght = 100;

    public WriteAbortTest(String format) throws Exception {
        try {
            System.out.println("Test for format " + format);
            bimg = new BufferedImage(width, heght,
                    BufferedImage.TYPE_INT_RGB);

            Graphics2D g = bimg.createGraphics();
            g.setColor(srccolor);
            g.fillRect(0, 0, width, heght);
            g.dispose();

            file = File.createTempFile("src_", "." + format, new File("."));
            ImageInputStream ios = ImageIO.createImageOutputStream(file);

            ImageWriter writer =
                    ImageIO.getImageWritersByFormatName(format).next();

            writer.setOutput(ios);
            writer.addIIOWriteProgressListener(this);

            // Abort writing in IIOWriteProgressListener.imageStarted().
            startAbort = true;
            writer.write(bimg);
            startAbort = false;

            // Abort writing in IIOWriteProgressListener.imageProgress().
            progressAbort = true;
            writer.write(bimg);
            progressAbort = false;

            ios.close();
            /*
             * All abort requests from imageStarted,imageProgress
             * from IIOWriteProgressListener should be reached
             * otherwise throw RuntimeException.
             */
            if (!(startAborted
                    && progressAborted)) {
                throw new RuntimeException("All IIOWriteProgressListener abort"
                        + " requests are not processed for format "
                        + format);
            }
        } finally {
            Files.delete(file.toPath());
        }
    }

    /*
     * Abstract methods that we need to implement from
     * IIOWriteProgressListener, and relevant for this test case.
     */
    @Override
    public void imageStarted(ImageWriter source, int imageIndex) {
        System.out.println("imageStarted called");
        if (startAbort) {
            source.abort();
        }
    }

    @Override
    public void imageProgress(ImageWriter source, float percentageDone) {
        System.out.println("imageProgress called");
        if (progressAbort) {
            source.abort();
        }
    }

    @Override
    public void writeAborted(ImageWriter source) {
        System.out.println("writeAborted called");
        // Verify IIOWriteProgressListener.imageStarted() abort request.
        if (startAbort) {
            System.out.println("imageStarted aborted ");
            startAborted = true;
        }

        // Verify IIOWriteProgressListener.imageProgress() abort request.
        if (progressAbort) {
            System.out.println("imageProgress aborted ");
            progressAborted = true;
        }
    }

    public static void main(String args[]) throws Exception {
        final String[] formats = {"bmp", "png", "gif", "jpg", "tif"};
        for (String format : formats) {
            new WriteAbortTest(format);
        }
    }

    /*
     * Remaining abstract methods that we need to implement from
     * IIOWriteProgressListener, but not relevant for this test case.
     */
    @Override
    public void imageComplete(ImageWriter source) {
    }

    @Override
    public void thumbnailStarted(ImageWriter source, int imageIndex,
                                 int thumbnailIndex) {
    }

    @Override
    public void thumbnailProgress(ImageWriter source, float percentageDone) {
    }

    @Override
    public void thumbnailComplete(ImageWriter source) {
    }
}

¤ Dauer der Verarbeitung: 0.23 Sekunden (vorverarbeitet) ¤

Download des Quellennavigators
Download des sprechenden Kalenders
in der Quellcodebibliothek suchen

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.