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Posted to commits@pdfbox.apache.org by ti...@apache.org on 2018/07/03 16:15:29 UTC
svn commit: r1835002 -
/pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDSquigglyAppearanceHandler.java
Author: tilman
Date: Tue Jul 3 16:15:29 2018
New Revision: 1835002
URL: http://svn.apache.org/viewvc?rev=1835002&view=rev
Log:
PDFBOX-3353: add handler for squiggly annotation
Modified:
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDSquigglyAppearanceHandler.java
Modified: pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDSquigglyAppearanceHandler.java
URL: http://svn.apache.org/viewvc/pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDSquigglyAppearanceHandler.java?rev=1835002&r1=1835001&r2=1835002&view=diff
==============================================================================
--- pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDSquigglyAppearanceHandler.java (original)
+++ pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDSquigglyAppearanceHandler.java Tue Jul 3 16:15:29 2018
@@ -16,9 +16,26 @@
package org.apache.pdfbox.pdmodel.interactive.annotation.handlers;
+import java.awt.geom.AffineTransform;
+import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
+import org.apache.pdfbox.cos.COSName;
+import org.apache.pdfbox.cos.COSStream;
+import org.apache.pdfbox.pdmodel.PDAppearanceContentStream;
+import org.apache.pdfbox.pdmodel.PDFormContentStream;
+import org.apache.pdfbox.pdmodel.PDPatternContentStream;
+import org.apache.pdfbox.pdmodel.PDResources;
+import org.apache.pdfbox.pdmodel.common.PDRectangle;
+import org.apache.pdfbox.pdmodel.graphics.color.PDColor;
+import org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace;
+import org.apache.pdfbox.pdmodel.graphics.color.PDDeviceRGB;
+import org.apache.pdfbox.pdmodel.graphics.color.PDPattern;
+import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
+import org.apache.pdfbox.pdmodel.graphics.pattern.PDTilingPattern;
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotation;
+import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationSquiggly;
+import org.apache.pdfbox.util.Matrix;
/**
*
@@ -43,7 +60,111 @@ public class PDSquigglyAppearanceHandler
@Override
public void generateNormalAppearance()
{
- //TODO
+ PDAnnotationSquiggly annotation = (PDAnnotationSquiggly) getAnnotation();
+ PDRectangle rect = annotation.getRectangle();
+ float[] pathsArray = annotation.getQuadPoints();
+ if (pathsArray == null)
+ {
+ return;
+ }
+ AnnotationBorder ab = AnnotationBorder.getAnnotationBorder(annotation, annotation.getBorderStyle());
+ PDColor color = annotation.getColor();
+ if (color == null || color.getComponents().length == 0)
+ {
+ return;
+ }
+ if (Float.compare(ab.width, 0) == 0)
+ {
+ // value found in adobe reader
+ ab.width = 1.5f;
+ }
+
+ // Adjust rectangle even if not empty, see PLPDF.com-MarkupAnnotations.pdf
+ //TODO in a class structure this should be overridable
+ // this is similar to polyline but different data type
+ // all coordinates (unlike painting) are used because I'm lazy
+ float minX = Float.MAX_VALUE;
+ float minY = Float.MAX_VALUE;
+ float maxX = Float.MIN_VALUE;
+ float maxY = Float.MIN_VALUE;
+ for (int i = 0; i < pathsArray.length / 2; ++i)
+ {
+ float x = pathsArray[i * 2];
+ float y = pathsArray[i * 2 + 1];
+ minX = Math.min(minX, x);
+ minY = Math.min(minY, y);
+ maxX = Math.max(maxX, x);
+ maxY = Math.max(maxY, y);
+ }
+ rect.setLowerLeftX(Math.min(minX - ab.width / 2, rect.getLowerLeftX()));
+ rect.setLowerLeftY(Math.min(minY - ab.width / 2, rect.getLowerLeftY()));
+ rect.setUpperRightX(Math.max(maxX + ab.width / 2, rect.getUpperRightX()));
+ rect.setUpperRightY(Math.max(maxY + ab.width / 2, rect.getUpperRightY()));
+ annotation.setRectangle(rect);
+
+ try (PDAppearanceContentStream cs = getNormalAppearanceAsContentStream())
+ {
+ setOpacity(cs, annotation.getConstantOpacity());
+
+ cs.setStrokingColor(color);
+
+ //TODO we ignore dash pattern and line width for now. Do they have any effect?
+
+
+ // quadpoints spec is incorrect
+ // https://stackoverflow.com/questions/9855814/pdf-spec-vs-acrobat-creation-quadpoints
+ for (int i = 0; i < pathsArray.length / 8; ++i)
+ {
+ // Adobe uses a fixed pattern that assumes a height of 40, and it transforms to that height
+ // horizontally and the same / 1.8 vertically.
+ // translation apparently based on bottom left, but slightly different in Adobe
+ //TODO what if the annotation is not horizontal?
+ float height = pathsArray[i * 8 + 1] - pathsArray[i * 8 + 5];
+ cs.transform(new Matrix(height / 40f, 0, 0, height / 40f / 1.8f, pathsArray[i * 8 + 4], pathsArray[i * 8 + 5]));
+
+ // Create form, BBox is mostly fixed, except for the horizontal size which is
+ // horizontal size divided by the horizontal transform factor from above
+ // (almost)
+ PDFormXObject form = new PDFormXObject(new COSStream());
+ form.setBBox(new PDRectangle(-0.5f, -0.5f, (pathsArray[i * 8 + 2] - pathsArray[i * 8]) / height * 40f + 0.5f, 13));
+ form.setResources(new PDResources());
+ form.setMatrix(AffineTransform.getTranslateInstance(0.5f, 0.5f));
+ cs.drawForm(form);
+ try (PDFormContentStream formCS = new PDFormContentStream(form))
+ {
+ PDTilingPattern pattern = new PDTilingPattern();
+ pattern.setBBox(new PDRectangle(0, 0, 10, 12));
+ pattern.setXStep(10);
+ pattern.setYStep(13);
+ pattern.setTilingType(PDTilingPattern.TILING_CONSTANT_SPACING_FASTER_TILING);
+ pattern.setPaintType(PDTilingPattern.PAINT_UNCOLORED);
+ try (PDPatternContentStream patternCS = new PDPatternContentStream(pattern))
+ {
+ // from Adobe
+ patternCS.setLineCapStyle(1);
+ patternCS.setLineJoinStyle(1);
+ patternCS.setLineWidth(1);
+ patternCS.setMiterLimit(10);
+ patternCS.moveTo(0, 1);
+ patternCS.lineTo(5, 11);
+ patternCS.lineTo(10, 1);
+ patternCS.stroke();
+ }
+ COSName patternName = form.getResources().add(pattern);
+ PDColorSpace patternColorSpace = new PDPattern(null, PDDeviceRGB.INSTANCE);
+ PDColor patternColor = new PDColor(color.getComponents(), patternName, patternColorSpace);
+ formCS.setNonStrokingColor(patternColor);
+
+ // With Adobe, the horizontal size is slightly different, don't know why
+ formCS.addRect(0, 0, (pathsArray[i * 8 + 2] - pathsArray[i * 8]) / height * 40f, 12);
+ formCS.fill();
+ }
+ }
+ }
+ catch (IOException ex)
+ {
+ LOG.error(ex);
+ }
}
@Override