All Downloads are FREE. Search and download functionalities are using the official Maven repository.
Please wait. This can take some minutes ...
Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
org.jpedal.parser.fx.PDFtoImageConvertorFX Maven / Gradle / Ivy
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2017 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
@LICENSE@
*
* ---------------
* PDFtoImageConvertorFX.java
* ---------------
*/
package org.jpedal.parser.fx;
import java.awt.image.BufferedImage;
import java.util.concurrent.CountDownLatch;
import javafx.application.Platform;
import javafx.beans.property.SimpleObjectProperty;
import javafx.embed.swing.SwingFXUtils;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.SnapshotResult;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.transform.Transform;
import javafx.util.Callback;
import org.jpedal.exception.PdfException;
import org.jpedal.io.ObjectStore;
import org.jpedal.objects.acroforms.AcroRenderer;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.parser.DecoderOptions;
import org.jpedal.parser.PDFtoImageConvertor;
import org.jpedal.parser.PdfStreamDecoder;
import org.jpedal.render.DynamicVectorRenderer;
import org.jpedal.render.FXDisplay;
import org.jpedal.render.FXDisplayForRasterizing;
public class PDFtoImageConvertorFX extends PDFtoImageConvertor {
int pageIndex;
public PDFtoImageConvertorFX(final float multiplyer, final DecoderOptions options) {
super(multiplyer, options);
isFX = true;
}
@Override
public DynamicVectorRenderer getDisplay(final int pageIndex, final ObjectStore localStore, final boolean isTransparent) {
this.pageIndex = pageIndex;
return imageDisplay = new FXDisplayForRasterizing(pageIndex, !isTransparent, 5000, localStore); //note !isTransparent as actually addBackground
}
@Override
public BufferedImage pageToImage(final boolean imageIsTransparent, final PdfStreamDecoder currentImageDecoder,
final float scaling, final PdfObject pdfObject, final AcroRenderer formRenderer) throws PdfException {
final SimpleObjectProperty imageProperty = new SimpleObjectProperty();
// Locks the Thread until the image is generated
final CountDownLatch latch = new CountDownLatch(1);
if (Platform.isFxApplicationThread()) {
snapshot(currentImageDecoder, scaling, pdfObject, null, imageProperty, formRenderer);
} else {
Platform.runLater(new Runnable() {
@Override
public void run() {
snapshot(currentImageDecoder, scaling, pdfObject, latch, imageProperty, formRenderer);
}
});
}
try {
// This will hang if we're on the FX Thread
if (!Platform.isFxApplicationThread()) {
latch.await();
}
} catch (final InterruptedException ex) {
ex.printStackTrace();
}
return imageProperty.get();
}
private void snapshot(final PdfStreamDecoder currentImageDecoder, final float scaling, final PdfObject pdfObject,
final CountDownLatch latch, final SimpleObjectProperty imageProperty, final AcroRenderer formRenderer) {
final Pane g = new Pane();
try {
formRenderer.getCompData().setRootDisplayComponent(g);
// currentImageDecoder.setObjectValue(ValueTypes.DirectRendering, null);//(Graphics2D) graphics);
currentImageDecoder.decodePageContent(pdfObject);
formRenderer.createDisplayComponentsForPage(pageIndex, currentImageDecoder);
formRenderer.displayComponentsOnscreen(pageIndex, pageIndex);
formRenderer.getCompData().resetScaledLocation(scaling, 0, 0);
} catch (final Exception ex) {
ex.printStackTrace();
}
final Group group;
group = ((FXDisplay) imageDisplay).getFXPane();
group.getChildren().addAll(g.getChildren());
// Transform from PDF coordinates and apply scaling
group.getTransforms().add(Transform.affine(1 * scaling, 0, 0, -1 * scaling, crx, h + cry));
final Scene scene = new Scene(group, w, h);
// Fixes blending
scene.setFill(Color.rgb(255, 255, 255, 1.0));
if (latch != null) {
// Async call to snapshot
scene.snapshot(new Callback() {
@Override
public Void call(final SnapshotResult p) {
imageProperty.set(SwingFXUtils.fromFXImage(p.getImage(), null));
latch.countDown();
return null;
}
}, null);
} else { // If we're on the FX Thread, get the snapshot straight away.
imageProperty.set(SwingFXUtils.fromFXImage(scene.snapshot(null), null));
}
}
}