/*
* Copyright 2003-2012 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package me.champeau.deck2pdf;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfWriter;
import javafx.animation.PauseTransition;
import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.concurrent.Worker;
import javafx.embed.swing.SwingFXUtils;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.HPos;
import javafx.geometry.VPos;
import javafx.scene.image.WritableImage;
import javafx.scene.layout.Region;
import javafx.scene.text.FontSmoothingType;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.util.Duration;
import java.awt.image.BufferedImage;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/**
* This class is responsible for converting a slide deck into a PDF file. It performs the following:
* <p/>
* <ul> <li>opens a web view with the slide deck</li> <li>captures each slide after one second</li> <li>puts the capture
* into a PDF file</li> <li>exits the VM</li> </ul>
*
* @author Cédric Champeau
*/
class Browser extends Region {
private final WebView browser = new WebView();
private final WebEngine webEngine = browser.getEngine();
private final String exportFile;
private final int width;
private final int height;
public Browser(String rootURL, String export, int width, int height) {
//apply the styles
getStyleClass().add("browser");
// load the web page
webEngine.load(rootURL);
//add the web view to the scene
getChildren().add(browser);
browser.setFontSmoothingType(FontSmoothingType.GRAY);
this.exportFile = export;
this.width = width;
this.height = height;
}
public WebEngine getEngine() {
return webEngine;
}
private void handleError(Exception e) {
throw new RuntimeException("Unable to export to PDF", e);
}
public void doExport(final Profile profile, final int width, final int height) {
final PauseTransition pt = new PauseTransition();
pt.setDuration(Duration.millis(profile.getPause()));
final AtomicInteger cpt = new AtomicInteger();
final Document document = new Document(new Rectangle(width, height), 0, 0, 0, 0);
try {
PdfWriter.getInstance(document, new FileOutputStream(exportFile));
} catch (DocumentException | FileNotFoundException e) {
handleError(e);
return;
}
document.open();
profile.setDocument(document);
pt.setOnFinished(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent actionEvent) {
WritableImage image = browser.snapshot(null, null);
BufferedImage bufferedImage = SwingFXUtils.fromFXImage(image, null);
double scaler = ((document.getPageSize().getWidth() - document.leftMargin()
- document.rightMargin()) / image.getWidth()) * 100;
try {
com.itextpdf.text.Image image2 =
com.itextpdf.text.Image.getInstance(bufferedImage, null);
image2.scalePercent((float) scaler);
document.add(image2);
document.newPage();
int current = cpt.incrementAndGet();
int nbSlides = profile.getSlideCount();
System.out.println("Exported slide " + current + (nbSlides > 0 ? "/" + nbSlides : ""));
if (!profile.isLastSlide(current)) {
profile.nextSlide();
pt.setDuration(Duration.millis(profile.getPause()));
pt.play();
} else {
profile.finish();
document.close();
System.out.println("Export complete.");
Platform.exit();
}
} catch (IOException | DocumentException e) {
handleError(e);
}
}
});
webEngine.getLoadWorker().stateProperty().addListener(
new ChangeListener<Worker.State>() {
public void changed(ObservableValue ov, Worker.State oldState, Worker.State newState) {
if (newState == Worker.State.SUCCEEDED) {
profile.setup();
profile.ready(new Runnable() { public void run() { pt.play(); } });
}
}
});
}
@Override
protected void layoutChildren() {
double w = getWidth();
double h = getHeight();
layoutInArea(browser, 0, 0, w, h, 0, HPos.CENTER, VPos.CENTER);
}
@Override
protected double computePrefWidth(double height) {
return width;
}
@Override
protected double computePrefHeight(double width) {
return height;
}
}