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Java example source code file (jfx.js)

This example Java source code file (jfx.js) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

awtimage, awtrobotcapturer, bywindowtype, canvas, file, jemmyfxroot, paint, pngdecoder, runnable, stage, stringbuffer, testname, timer, timertask

The jfx.js Java example source code

/*
 * Copyright (c) 2013, 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.
 */

/**
 * Base library for JavaFX canvas run by Nashorn testing.
 * @subtest
 * 
 * 
 */

var System               = Java.type("java.lang.System");
var AWTImage             = Java.type("org.jemmy.image.AWTImage");
var PNGDecoder           = Java.type("org.jemmy.image.PNGDecoder");
var JemmyFxRoot          = Java.type("org.jemmy.fx.Root");
var AWTRobotCapturer     = Java.type("org.jemmy.image.AWTRobotCapturer");
var ByWindowType         = Java.type("org.jemmy.fx.ByWindowType");
var Scene                = Java.type("javafx.scene.Scene");
var Stage                = Java.type("javafx.stage.Stage");
var File                 = Java.type("java.io.File");
var OSInfo               = Java.type("sun.awt.OSInfo");
var OSType               = Java.type("sun.awt.OSInfo.OSType");
var StringBuffer         = Java.type("java.lang.StringBuffer");
var Paint                = Java.type("javafx.scene.paint.Paint");
var Color                = Java.type("javafx.scene.paint.Color");
var Image                = Java.type("javafx.scene.image.Image");
var Canvas               = Java.type("javafx.scene.canvas.Canvas");
var BorderPane           = Java.type("javafx.scene.layout.BorderPane");
var StackPane            = Java.type("javafx.scene.layout.StackPane");
var StrokeLineCap        = Java.type("javafx.scene.shape.StrokeLineCap");
var Platform             = Java.type("javafx.application.Platform");
var Runnable             = Java.type("java.lang.Runnable");
var RunnableExtend       = Java.extend(Runnable);
var AnimationTimer       = Java.type("javafx.animation.AnimationTimer");
var AnimationTimerExtend = Java.extend(AnimationTimer);
var Timer                = Java.type("java.util.Timer");
var TimerTask            = Java.type("java.util.TimerTask");

var TESTNAME = "test";
var fsep = System.getProperty("file.separator");

function checkImageAndExit() {
    var raceTimer = new Timer(true);
    var timerTask = new TimerTask() {
        run: function run() {
            var tmpdir = System.getProperty("java.io.tmpdir");
            var timenow = (new Date()).getTime();
            var scrShotTmp = tmpdir + fsep + "screenshot" + timenow +".png";
            var goldenImageDir = __DIR__ + "jfx" + fsep + TESTNAME + fsep + "golden";
            makeScreenShot(scrShotTmp);
            var dupImg = isDuplicateImages(scrShotTmp, goldenImageDir);
            (new File(scrShotTmp)).delete();
            if (!dupImg) System.err.println("ERROR: screenshot does not match the golden image");
            exit(0);
        }
    };
    raceTimer.schedule(timerTask, 100);
}

function makeScreenShot(shootToImg) {
   JemmyFxRoot.ROOT.getEnvironment().setImageCapturer(new AWTRobotCapturer());
   var wrap = JemmyFxRoot.ROOT.lookup(new ByWindowType($STAGE.class)).lookup(Scene.class).wrap(0);
   var imageJemmy = wrap.getScreenImage();
   imageJemmy.save(shootToImg);
}

function isDuplicateImages(screenShot, goldenDir) {
    var f1 = new File(screenShot);
    var f2;
    var sb = new StringBuffer(goldenDir);
    if (OSInfo.getOSType() == OSType.WINDOWS) {
        f2 = new File(sb.append(fsep + "windows.png").toString());
    } else if (OSInfo.getOSType() == OSType.LINUX) {
        f2 = new File(sb.append(fsep + "linux.png").toString());
    } else if (OSInfo.getOSType() == OSType.MACOSX) {
        f2 = new File(sb.append(fsep + "macosx.png").toString());
    }
    if (f1.exists() && f2.exists()) {
        var image1 = new AWTImage(PNGDecoder.decode(f1.getAbsolutePath()));
        var image2 = new AWTImage(PNGDecoder.decode(f2.getAbsolutePath()));
        return image1.compareTo(image2) == null ? true : false;
    }
    return false;
}

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