JavaFX :使用icepdf显示pdf
JavaFX :使用icepdf显示pdf
提问于 2015-09-16 22:36:39
我正在寻找一种在我的JavaFx应用程序中显示pdf文件的方法。我正在尝试用icePDF来做这件事，但我似乎只找到了swing的代码。现在，我将代码插入到SwingNode中，并将其嵌入到窗格中，但问题是包含icePDF pdf阅读器的JPanel不适合JavaFx窗格的大小。
我是这样做的：
private void handleApercuBtn(){
SwingController controller = new SwingController();
SwingViewBuilder factory = new SwingViewBuilder(controller);
JPanel viewerComponentPanel = factory.buildViewerPanel();
ComponentKeyBinding.install(controller, viewerComponentPanel);
controller.getDocumentViewController().setAnnotationCallback(
new org.icepdf.ri.common.MyAnnotationCallback(
controller.getDocumentViewController()));
final SwingNode swingNode = new SwingNode();
createAndSetSwingContent(swingNode,viewerComponentPanel);
apercuPane.getChildren().add(swingNode);
controller.openDocument(filePath);
}如何将包含icePDF阅读器的JPanel放入我的窗格(apercuPane)？我怎么能不使用Swing代码来做到这一点呢？
回答 2
Stack Overflow用户
发布于 2018-05-31 18:49:16
/**
* FXML Controller class
*
* @author Sudarshan
*/
public class PDFFXMLController implements Initializable {
private static String pdfPath;
private SwingController swingController;
private JComponent viewerPanel;
@FXML
private BorderPane borderPane;
/**
* Initializes the controller class.
*/
@Override
public void initialize(URL url, ResourceBundle rb) {
String pdfPathLoad;
try {
pdfPathLoad = loadPDF("http://21-04-2017/17854381660C617.pdf");
createViewer(borderPane);
openDocument(pdfPathLoad );
} catch (IOException ex) {
Logger.getLogger(PDFFXMLController.class.getName()).log(Level.SEVERE, null, ex);
}
}
private void createViewer(BorderPane borderPane) {
try {
SwingUtilities.invokeAndWait(() -> {
swingController = new SwingController();
swingController.setIsEmbeddedComponent(true);
PropertiesManager properties = new PropertiesManager(System.getProperties(),
ResourceBundle.getBundle(PropertiesManager.DEFAULT_MESSAGE_BUNDLE));
properties.set(PropertiesManager.PROPERTY_SHOW_TOOLBAR_FIT, "false");
properties.set(PropertiesManager.PROPERTY_SHOW_TOOLBAR_ROTATE, "false");
properties.set(PropertiesManager.PROPERTY_SHOW_TOOLBAR_TOOL, "false");
properties.set(PropertiesManager.PROPERTY_DEFAULT_ZOOM_LEVEL, "1.25");
properties.setBoolean(PropertiesManager.PROPERTY_SHOW_STATUSBAR_VIEWMODE, Boolean.FALSE);
properties.set(PropertiesManager.PROPERTY_SHOW_TOOLBAR_PAGENAV, "false");
ResourceBundle messageBundle = ResourceBundle.getBundle(PropertiesManager.DEFAULT_MESSAGE_BUNDLE);
new FontPropertiesManager(properties, System.getProperties(), messageBundle);
swingController.getDocumentViewController().setAnnotationCallback(
new org.icepdf.ri.common.MyAnnotationCallback(swingController.getDocumentViewController()));
SwingViewBuilder factory = new SwingViewBuilder(swingController, properties);
viewerPanel = factory.buildViewerPanel();
viewerPanel.revalidate();
SwingNode swingNode = new SwingNode();
swingNode.setContent(viewerPanel);
borderPane.setCenter(swingNode);
swingController.setToolBarVisible(false);
swingController.setUtilityPaneVisible(false);
});
} catch (InterruptedException | InvocationTargetException e) {
}
}
private void openDocument(String document) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
swingController.openDocument(document);
viewerPanel.revalidate();
}
});
}
public String loadPDF(String adresse) throws IOException {
System.out.println("In load PDf");
if (!adresse.toLowerCase().endsWith("pdf")) {
return null;
}
String fileName = adresse.substring(adresse.lastIndexOf("/") + 1,
adresse.lastIndexOf("."));
String suffix = adresse.substring(adresse.lastIndexOf("."),
adresse.length());
File temp = null;
try {
InputStream input = new URL(adresse).openStream();
temp = File.createTempFile(fileName, suffix);
temp.deleteOnExit();
Files.copy(input, Paths.get(temp.toURI()),
StandardCopyOption.REPLACE_EXISTING);
} catch (MalformedURLException ex) {
Logger.getLogger(PDFFXMLController.class.getName()).log(Level.SEVERE, null, ex);
}
return temp.getAbsolutePath();
}
}Stack Overflow用户
发布于 2017-01-16 23:51:08
回答有点晚，但也许有人会发现这在未来会有帮助。这是我们公司的做法。也许有更好的方法来做到这一点，但至少它是有效的。
简而言之，PDF作为IcePDF文档加载，并转换为可显示的图像。
示例代码：
@FXML
private ScrollPane scrollPane;
private final ObjectProperty<ImageView> currentImage;
...
scrollPane.contentProperty().bind(currentImage);
...
org.icepdf.core.pobjects.Document currentDocument = new Document();
try {
File file = new File("/path/to/pdf");
currentDocument .setFile(file.getAbsolutePath());
} catch (PDFException | PDFSecurityException | IOException ex) {
logger.debug("Trying to load file: " + ex);
}
...
private void drawPage(int pageNo) {
float scale = 1.0f;
float rotation = 0f;
// Paint each pages content to an image
BufferedImage image = (BufferedImage) currentDocument.get().getPageImage(pageNo,
GraphicsRenderingHints.SCREEN, Page.BOUNDARY_CROPBOX, rotation, scale);
WritableImage fxImage = javafx.embed.swing.SwingFXUtils.toFXImage(image, null);
if (currentImage.get() != null) {
currentImage.get().setImage(fxImage);
} else {
currentImage.set(new ImageView(fxImage));
}
//Clean up
image.flush();
}
...
drawPage(0);页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/32611666
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