javafx大图崩溃

JavaFX的新手

此示例适用于小图像。但是大图像会使ImageView崩溃。

我的示例代码有缺陷吗？JavaFX中的大图像是否存在问题？还有别的吗

我从网上获取一个示例：

http://www.java2s.com/Code/Java/JavaFX/JavaFXImageZoomExample.htm

我下载并处理PDF文件：

http://optics.byu.edu/BYUOpticsBook_2013.pdf

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

这给了我5100×6600像素的图像。

我尝试查看该图像：几秒钟后，出现一个窗口，其中有一个空的滚动窗格，并向控制台发出了stacktrace。

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);
  }
} 

堆栈跟踪：

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)