Hello,While working on some JFreeChart demos, I noticed a bug with PdfGraphics2D when filling shapes with a cyclic GradientPaint (I use iText 2.0.2 currently). I found this has already been reported at SourceForge as bug 1534739. I created a small test app to reproduce the problem, which for some reason I can't attach to the bug report - so I've attached the source file (and PDF output) to this e-mail.
Let me know if you need any further info... Regards, Dave Gilbert http://www.jfree.org/
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.FileOutputStream;
import com.lowagie.text.Document;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfWriter;
/**
* Test case for cyclic GradientPaint bug in iText 2.0.2.
*/
public class GradientPaintBug {
/**
* Default constructor.
*/
public GradientPaintBug() {
}
/**
* Creates the test PDF output.
*/
public void writeTestPDF() {
Document doc = new Document();
try {
PdfWriter writer = PdfWriter.getInstance(doc, new FileOutputStream(
"GradientPaintBug.pdf"));
doc.open();
doc.add(new Paragraph("This image shows a cyclic GradientPaint:"));
com.lowagie.text.Image img = com.lowagie.text.Image.getInstance(
createTestImage(), null);
doc.add(img);
doc.add(new Paragraph("Here is the same drawing created with "
+ "PdfGraphics2D, but the 'cyclic' flag is ignored:"));
PdfContentByte cb = writer.getDirectContent();
Rectangle size = doc.getPageSize();
Graphics2D g2 = cb.createGraphics(size.width(), size.height());
draw(g2, new Rectangle2D.Double(doc.leftMargin(),
doc.topMargin() + 120, 200, 50));
g2.dispose();
}
catch (Exception e) {
e.printStackTrace();
}
doc.close();
}
/**
* Creates an image showing the correct behaviour for a cyclic
* GradientPaint fill.
*
* @return The image.
*/
private Image createTestImage() {
BufferedImage image = new BufferedImage(200, 50,
BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = image.createGraphics();
draw(g2, new Rectangle2D.Double(0, 0, 200, 50));
return image;
}
/**
* Drawing code used for both the embedded image and the PdfGraphics2D
* drawing.
*
* @param g2 the drawing target.
* @param area the area to fill.
*/
private void draw(Graphics2D g2, Rectangle2D area) {
// create cyclic gradient paint
GradientPaint gp = new GradientPaint((float) area.getMinX(),
(float) area.getCenterY(), Color.yellow,
(float) area.getCenterX(), (float) area.getCenterY(),
Color.red, true);
g2.setPaint(gp);
g2.fill(area);
}
/**
* Entry point for test app.
*
* @param args ignored.
*/
public static void main(String[] args) {
GradientPaintBug app = new GradientPaintBug();
app.writeTestPDF();
}
}
GradientPaintBug.pdf
Description: Adobe PDF document
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