JavaFX large image crashes ImageView

From:

Jeff Higgins <jeff@invalid.invalid>

Newsgroups:

comp.lang.java.programmer

Date:

Wed, 07 Jan 2015 20:32:14 -0500

Message-ID:

<m8kmq0$77h$1@dont-email.me>

New to JavaFX.
Is my example code flawed?
Is there a problem with large images in JavaFX?
Something else?

I grab an example from the web:
<http://www.java2s.com/Code/Java/JavaFX/JavaFXImageZoomExample.htm>

I download and process a PDF file:
<http://optics.byu.edu/BYUOpticsBook_2013.pdf>

gs -sDEVICE=png16m -dNOPAUSE -dBATCH -dSAFER \
    -r600 -dFirstPage=1 -dLastPage=1 \
    -sOutputFile=001.png BYUOpticsBook_2013.pdf

This gives me a 5100 ?? 6600 pixel image.

I attempt to view the image:

import javafx.application.Application;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.ScrollPane;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.input.ScrollEvent;
import javafx.stage.Stage;

/**
  *
  * @author O.J. Sousa Rodrigues (office at halbgasse.at)
  */
public class ZoomExample extends Application {

   private ImageView imageView = new ImageView();
   private ScrollPane scrollPane = new ScrollPane();
   final DoubleProperty zoomProperty = new SimpleDoubleProperty(200);

   @Override
   public void start(Stage stage) throws Exception {

     zoomProperty.addListener(new InvalidationListener() {
       @Override
       public void invalidated(Observable arg0) {
         imageView.setFitWidth(zoomProperty.get() * 4);
         imageView.setFitHeight(zoomProperty.get() * 3);
       }
     });

     scrollPane.addEventFilter(ScrollEvent.ANY,
         new EventHandler<ScrollEvent>() {

       @Override
       public void handle(ScrollEvent event) {
         if (event.getDeltaY() > 0) {
           zoomProperty.set(zoomProperty.get() * 1.1);
         } else if (event.getDeltaY() < 0) {
           zoomProperty.set(zoomProperty.get() / 1.1);
         }
       }
     });

     imageView.setImage(new Image("file:///home/jeff/001.png"));
     imageView.preserveRatioProperty().set(true);
     scrollPane.setContent(imageView);

     stage.setScene(new Scene(scrollPane, 400, 300));
     stage.show();

   }
   public static void main(String[] args) {
     launch(args);
   }
}

I get stack trace:

java.lang.NullPointerException
at com.sun.prism.sw.SWGraphics.drawTexture(SWGraphics.java:686)
at com.sun.prism.sw.SWGraphics.drawTexture(SWGraphics.java:665)
at com.sun.prism.sw.SWGraphics.drawTexture(SWGraphics.java:648)
at com.sun.javafx.sg.prism.NGImageView.renderContent(NGImageView.java:123)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067)
at com.sun.javafx.sg.prism.NGImageView.doRender(NGImageView.java:103)
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067)
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
at com.sun.javafx.sg.prism.NGNode.renderForClip(NGNode.java:2308)
at com.sun.javafx.sg.prism.NGNode.renderRectClip(NGNode.java:2202)
at com.sun.javafx.sg.prism.NGNode.renderClip(NGNode.java:2228)
at
com.sun.javafx.sg.prism.CacheFilter.impl_renderNodeToCache(CacheFilter.java:663)
at com.sun.javafx.sg.prism.CacheFilter.render(CacheFilter.java:567)
at com.sun.javafx.sg.prism.NGNode.renderCached(NGNode.java:2372)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2058)
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067)
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:474)
at com.sun.javafx.tk.quantum.ViewPainter.paintImpl(ViewPainter.java:327)
at com.sun.javafx.tk.quantum.UploadingPainter.run(UploadingPainter.java:135)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:125)
at java.lang.Thread.run(Thread.java:745)

But this works:
I just can't see the image because no scroll, etc.

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class LoadImage extends Application {

   public static void main(String[] args) {
     Application.launch(args);
   }

   @Override
   public void start(Stage primaryStage) {
     primaryStage.setTitle("Load Image");

     StackPane sp = new StackPane();
     Image img = new Image("file:///home/jeff/001.jpg");
     ImageView imgView = new ImageView(img);
     sp.getChildren().add(imgView);

     Scene scene = new Scene(sp);
     primaryStage.setScene(scene);
     primaryStage.show();
   }
}