Am 19.07.2016 um 14:34 schrieb Gstöttner Siegfried:
Hi!
I am pretty new to java and currently working on an application for printing
serial letters in JavaFX. I would like to give the user an overview of the
result in a simple pdf-viewer. Like that one shown in an example prior to
ver2.0. Could anybody tell me how to implement this with the actual libry?
Examples missing or i could not find them. Are there any experiences with usage
of Java FX8 Swingnode class to display such a viewer? Thank you very much.
You could look at PDFDebugger source code. Alternatively, here's some
code modified from the code in
https://issues.apache.org/jira/browse/PDFBOX-3359 . However this does
not contain paging, and it isn't with java FX.
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.io.File;
import java.io.IOException;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.WindowConstants;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.rendering.PDFRenderer;
public class PDFBox3359PanelTestEnhanced
{
private static JPanel getTestPanel()
{
final PDDocument doc;
try
{
doc = PDDocument.load(new File("....", "XXX.pdf"));
}
catch (IOException e)
{
e.printStackTrace();
return null;
}
final PDFRenderer renderer = new PDFRenderer(doc);
JPanel panel = new JPanel()
{
int i;
@Override
protected void paintComponent(Graphics g)
{
try
{
g.setColor(Color.red);
g.fillRect(0, 0, getWidth(), getHeight());
PDPage page = doc.getPage(0);
PDRectangle cropBox = page.getCropBox();
boolean rot = false;
if (page.getRotation() == 90 || page.getRotation()
== 270)
{
rot = true;
}
//
https://stackoverflow.com/questions/1106339/resize-image-to-fit-in-bounding-box
float imgWidth = rot ? cropBox.getHeight() :
cropBox.getWidth();
float imgHeight = rot ? cropBox.getWidth() :
cropBox.getHeight();
float xf = getWidth() / imgWidth;
float yf = getHeight() / imgHeight;
float scale = Math.min(xf, yf);
if (yf < xf)
{
g.translate((int) ((getWidth() - imgWidth * yf)
/ 2), 0);
}
else
{
g.translate(0, (int) ((getHeight() - imgHeight
* xf) / 2));
}
renderer.renderPageToGraphics(0, (Graphics2D) g,
scale);
}
catch (IOException e)
{
e.printStackTrace();
}
}
};
return panel;
}
public static void main(String[] args) throws Exception
{
SwingUtilities.invokeLater(new Runnable()
{
@Override
public void run()
{
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.add(getTestPanel());
frame.pack();
frame.setSize(600, 400);
Dimension paneSize = frame.getSize();
Dimension screenSize = frame.getToolkit().getScreenSize();
frame.setLocation((screenSize.width - paneSize.width) /
2, (screenSize.height - paneSize.height) / 2);
frame.setTitle("Test");
frame.setVisible(true);
}
});
}
}
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