Author: tilman
Date: Sun Jun 3 18:39:07 2018
New Revision: 1832782
URL: http://svn.apache.org/viewvc?rev=1832782&view=rev
Log:
PDFBOX-3353: draw text box
Modified:
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDFreeTextAppearanceHandler.java
Modified:
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDFreeTextAppearanceHandler.java
URL:
http://svn.apache.org/viewvc/pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDFreeTextAppearanceHandler.java?rev=1832782&r1=1832781&r2=1832782&view=diff
==============================================================================
---
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDFreeTextAppearanceHandler.java
(original)
+++
pdfbox/trunk/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/interactive/annotation/handlers/PDFreeTextAppearanceHandler.java
Sun Jun 3 18:39:07 2018
@@ -23,10 +23,13 @@ import org.apache.fontbox.util.Charsets;
import org.apache.pdfbox.contentstream.operator.Operator;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSBase;
+import org.apache.pdfbox.cos.COSNumber;
import org.apache.pdfbox.cos.COSObject;
import org.apache.pdfbox.pdfparser.PDFStreamParser;
import org.apache.pdfbox.pdmodel.PDAppearanceContentStream;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
+import org.apache.pdfbox.pdmodel.font.PDFont;
+import org.apache.pdfbox.pdmodel.font.PDType1Font;
import org.apache.pdfbox.pdmodel.graphics.color.PDColor;
import org.apache.pdfbox.pdmodel.graphics.color.PDDeviceCMYK;
import org.apache.pdfbox.pdmodel.graphics.color.PDDeviceGray;
@@ -37,6 +40,9 @@ import static org.apache.pdfbox.pdmodel.
import org.apache.pdfbox.pdmodel.interactive.annotation.PDAppearanceStream;
import
org.apache.pdfbox.pdmodel.interactive.annotation.PDBorderEffectDictionary;
import static
org.apache.pdfbox.pdmodel.interactive.annotation.handlers.PDAbstractAppearanceHandler.SHORT_STYLES;
+import org.apache.pdfbox.pdmodel.interactive.annotation.layout.AppearanceStyle;
+import org.apache.pdfbox.pdmodel.interactive.annotation.layout.PlainText;
+import
org.apache.pdfbox.pdmodel.interactive.annotation.layout.PlainTextFormatter;
import org.apache.pdfbox.util.Matrix;
public class PDFreeTextAppearanceHandler extends PDAbstractAppearanceHandler
@@ -191,6 +197,35 @@ public class PDFreeTextAppearanceHandler
cs.drawShape(ab.width, hasStroke, hasBackground);
+ // somewhat inspired by
AppearanceGeneratorHelper.insertGeneratedAppearance()
+ cs.beginText();
+ PDFont font = PDType1Font.HELVETICA;
+ int factor = 1;
+ if (borderEffect != null &&
borderEffect.getStyle().equals(PDBorderEffectDictionary.STYLE_CLOUDY))
+ {
+ factor = 2;
+ }
+ float fontSize = extractFontSize(annotation);
+ cs.setFont(font, fontSize);
+ cs.setNonStrokingColor(strokingColor);
+ AppearanceStyle appearanceStyle = new AppearanceStyle();
+ appearanceStyle.setFont(font);
+ appearanceStyle.setFontSize(fontSize);
+ PlainTextFormatter formatter = new PlainTextFormatter.Builder(cs)
+ .style(appearanceStyle)
+ .text(new PlainText(annotation.getContents()))
+ .width(getRectangle().getWidth())
+ .wrapLines(true)
+ //TODO some reverse engineering needed to find out padding
+ //TODO fat cloudy rectangle in CTAN file has "the"
incomplete
+ .initialOffset(getRectangle().getLowerLeftX() + fontSize /
2 * factor,
+ getRectangle().getUpperRightY() -
font.getBoundingBox().getHeight() * fontSize / 1000 * factor)
+ // Adobe ignores the /Q
+ //.textAlign(annotation.getQ())
+ .build();
+ formatter.format();
+ cs.endText();
+
if (pathsArray.length > 0)
{
@@ -300,6 +335,60 @@ public class PDFreeTextAppearanceHandler
return strokingColor;
}
+ //TODO extractNonStrokingColor and extractFontSize
+ // might somehow be replaced with PDDefaultAppearanceString,
+ // which is quite similar.
+ private float extractFontSize(PDAnnotationFreeText annotation)
+ {
+ String defaultAppearance = annotation.getDefaultAppearance();
+ if (defaultAppearance == null)
+ {
+ return 10;
+ }
+
+ try
+ {
+ // not sure if charset is correct, but we only need numbers and
simple characters
+ PDFStreamParser parser = new
PDFStreamParser(defaultAppearance.getBytes(Charsets.US_ASCII));
+ COSArray arguments = new COSArray();
+ COSArray fontArguments = new COSArray();
+ for (Object token = parser.parseNextToken(); token != null; token
= parser.parseNextToken())
+ {
+ if (token instanceof COSObject)
+ {
+ arguments.add(((COSObject) token).getObject());
+ }
+ else if (token instanceof Operator)
+ {
+ Operator op = (Operator) token;
+ String name = op.getName();
+ if ("Tf".equals(name))
+ {
+ fontArguments = arguments;
+ }
+ arguments = new COSArray();
+ }
+ else
+ {
+ arguments.add((COSBase) token);
+ }
+ }
+ if (fontArguments.size() >= 2)
+ {
+ COSBase base = fontArguments.get(1);
+ if (base instanceof COSNumber)
+ {
+ return ((COSNumber) base).floatValue();
+ }
+ }
+ }
+ catch (IOException ex)
+ {
+ LOG.warn("Problem parsing /DA, will use default 10", ex);
+ }
+ return 10;
+ }
+
@Override
public void generateRolloverAppearance()
{
