I haven't looked at this code in a few years, so I am not in a position to
expound on it. I offer it in the possibility it suggests something. Caveat: I
seem to recall they wanted their radio buttons optionally to do some things
that did not seem radio-button-like to me.
private static void addRadiobuttonAtRect(PDDocument document, PDPage page,
PDAcroForm acroForm, String name,
Map<String, String> optionMap, PDRectangle rect, GroupInfo groupInfo, String
dflt) {
PDAnnotationWidget radioButton = new PDAnnotationWidget();
String grp = Utils.unescapeChar(optionMap.get("grp"));
System.out.println("grp=" + grp + "; name=" + name + "; num=" +
optionMap.get("num"));
radioButton.setRectangle(rect);
radioButton.setPrinted(true);
int wd = Utils.getInt(optionMap.get("wd"));
if (wd == -1) {
System.out.println("Zero or invalid wd of radio button '" +
optionMap.get("wd") + "'");
wd = 8;
}
rect.setUpperRightX(rect.getLowerLeftX() + wd);
rect.setUpperRightY(rect.getLowerLeftY() + wd); // assume buttons are never
oblong/oval
boolean squareButtons = true;
String type = optionMap.get("btnshape");
if ((type != null) && type.equals("round")) {
squareButtons = false;
}
PDFormFieldAdditionalActions fieldActions = new
PDFormFieldAdditionalActions();
PDAnnotationAdditionalActions annotationActions = new
PDAnnotationAdditionalActions();
setWidgetActions(optionMap, fieldActions, annotationActions);
radioButton.setActions(annotationActions);
PDAppearanceCharacteristicsDictionary fieldAppearance
= new PDAppearanceCharacteristicsDictionary(new
COSDictionary());
if (Utils.getInt(optionMap.get("brdwt")) != 0) {
/*
* For borderWeight of zero to work reliably (and not exhibit a thin
rule),
* it is important not so set any border color.
*/
fieldAppearance.setBorderColour(Utils.hexToPDColor(optionMap.get("brdclr")));
}
fieldAppearance.setBackground(Utils.hexToPDColor(optionMap.get("bclr")));
radioButton.setAnnotationFlags(4);
radioButton.setPage(page);
PDRadioButton radioGroupWidget = (PDRadioButton)
groupInfo.getGroupButton();
radioButton.setParent(radioGroupWidget);
COSDictionary apNDict = new COSDictionary();
COSDictionary apDDict = new COSDictionary();
PDAppearanceDictionary appearance = new PDAppearanceDictionary();
PDAppearanceEntry appearanceNEntry;
PDAppearanceEntry appearanceDEntry;
COSStream offNStream = new COSStream();
offNStream.setItem(COSName.BBOX, rect);
offNStream.setItem(COSName.FORMTYPE, COSInteger.ONE);
offNStream.setItem(COSName.TYPE, COSName.XOBJECT);
offNStream.setItem(COSName.SUBTYPE, COSName.FORM);
apNDict.setItem(COSName.Off, offNStream);
COSStream onNStream = new COSStream();
onNStream.setItem(COSName.BBOX, rect);
onNStream.setItem(COSName.FORMTYPE, COSInteger.ONE);
onNStream.setItem(COSName.TYPE, COSName.XOBJECT);
onNStream.setItem(COSName.SUBTYPE, COSName.FORM);
apNDict.setItem(name, onNStream);
COSStream offDStream = new COSStream();
offDStream.setItem(COSName.BBOX, rect);
offDStream.setItem(COSName.FORMTYPE, COSInteger.ONE);
offDStream.setItem(COSName.TYPE, COSName.XOBJECT);
offDStream.setItem(COSName.SUBTYPE, COSName.FORM);
apDDict.setItem(COSName.Off, offDStream);
COSStream onDStream = new COSStream();
onDStream.setItem(COSName.BBOX, rect);
onDStream.setItem(COSName.FORMTYPE, COSInteger.ONE);
onDStream.setItem(COSName.TYPE, COSName.XOBJECT);
onDStream.setItem(COSName.SUBTYPE, COSName.FORM);
apDDict.setItem(name, onDStream);
if ((dflt != null) && dflt.equals("Yes")) {
//radioButton.setAppearanceState(name);
} else {
radioButton.setAppearanceState("Off");
}
radioButton.setAppearance(appearance);
radioButton.setAppearanceCharacteristics(fieldAppearance);
appearanceNEntry = new PDAppearanceEntry(apNDict);
appearanceDEntry = new PDAppearanceEntry(apDDict);
appearance.setNormalAppearance(appearanceNEntry);
appearance.setDownAppearance(appearanceDEntry);
if (squareButtons) {
/* The following controls what appears within a selected square.
* If applied to round buttons, they become square. */
// 8 = cross; 4 = checkmark; H = star; u = diamond; n = square, l = dot
fieldAppearance.setNormalCaption("4");
try {
apNDict.setItem(COSName.Off, createRadioButtonAppearanceStream(document,
radioButton, false));
apNDict.setItem(COSName.YES, createRadioButtonAppearanceStream(document,
radioButton, true));
} catch (IOException exc) {
System.out.println("IOException calling createRadioButtonAppearanceStream: " +
exc.getMessage());
}
}
// Add the annotation to the group.
groupInfo.addItem(radioButton);
try {
page.getAnnotations().add(radioButton);
} catch (IOException exc) {
System.out.println("IOException adding readioButton to page: " +
exc.getMessage());
}
}
private static PDAppearanceStream createRadioButtonAppearanceStream (final
PDDocument document, PDAnnotationWidget widget, boolean on) throws IOException {
PDRectangle rect = widget.getRectangle();
PDAppearanceCharacteristicsDictionary appearanceCharacteristics;
PDAppearanceStream yesAP = new PDAppearanceStream(document);
yesAP.setBBox(new PDRectangle(rect.getWidth(), rect.getHeight()));
yesAP.setResources(new PDResources());
try (PDAppearanceContentStream yesAPCS = new
PDAppearanceContentStream(yesAP)) {
appearanceCharacteristics = widget.getAppearanceCharacteristics();
PDColor backgroundColor = appearanceCharacteristics.getBackground();
PDColor borderColor = appearanceCharacteristics.getBorderColour();
float lineWidth = 1.0F;
yesAPCS.setBorderLine(lineWidth, widget.getBorderStyle(),
widget.getBorder());
yesAPCS.setNonStrokingColor(backgroundColor);
yesAPCS.addRect(0, 0, rect.getWidth(), rect.getHeight());
yesAPCS.fill();
if (borderColor != null) {
yesAPCS.setStrokingColor(borderColor);
}
yesAPCS.addRect(lineWidth / 2, lineWidth / 2, rect.getWidth() -
lineWidth, rect.getHeight() - lineWidth);
yesAPCS.stroke();
if (!on) {
return yesAP;
}
yesAPCS.addRect(lineWidth, lineWidth, rect.getWidth() - lineWidth *
2, rect.getHeight() - lineWidth * 2);
yesAPCS.clip();
String normalCaption = appearanceCharacteristics.getNormalCaption();
if (normalCaption == null) {
normalCaption = "4"; // Adobe behaviour
}
if ("8".equals(normalCaption)) {
// Adobe paints a cross instead of using the Zapf Dingbats
cross symbol
yesAPCS.setStrokingColor(0f);
yesAPCS.moveTo(lineWidth * 2, rect.getHeight() - lineWidth * 2);
yesAPCS.lineTo(rect.getWidth() - lineWidth * 2, lineWidth * 2);
yesAPCS.moveTo(rect.getWidth() - lineWidth * 2,
rect.getHeight() - lineWidth * 2);
yesAPCS.lineTo(lineWidth * 2, lineWidth * 2);
yesAPCS.stroke();
} else {
// The caption is not unicode, but the Zapf Dingbats code in
the PDF
// Thus convert it back to unicode
// Assume that only the first character is used.
String name =
PDType1Font.ZAPF_DINGBATS.codeToName(normalCaption.codePointAt(0));
String unicode =
PDType1Font.ZAPF_DINGBATS.getGlyphList().toUnicode(name);
Rectangle2D bounds =
PDType1Font.ZAPF_DINGBATS.getPath(name).getBounds2D();
float size = (float) Math.min(bounds.getWidth(),
bounds.getHeight()) / 1000;
// assume that checkmark has square size
// the calculations approximate what Adobe is doing, i.e. put
the glyph in the middle
float fontSize = (rect.getWidth() - lineWidth * 2) / size *
0.6666f;
float xOffset = (float) (rect.getWidth() - (bounds.getWidth())
/ 1000 * fontSize) / 2;
xOffset -= bounds.getX() / 1000 * fontSize;
float yOffset = (float) (rect.getHeight() -
(bounds.getHeight()) / 1000 * fontSize) / 2;
yOffset -= bounds.getY() / 1000 * fontSize;
yesAPCS.setNonStrokingColor(0);
yesAPCS.beginText();
yesAPCS.setFont(PDType1Font.ZAPF_DINGBATS, fontSize);
yesAPCS.newLineAtOffset(xOffset, yOffset);
yesAPCS.showText(unicode);
yesAPCS.endText();
}
}
return yesAP;
}
-----Original Message-----
From: Tilman Hausherr <[email protected]>
Sent: Thursday, November 7, 2019 12:13 PM
To: [email protected]
Subject: Re: Unable to find documentation on using PDRadioButton.setValue with
regards to PDDocument.saveIncremental (selected appearance not show in PDF
viewer)
Am 07.11.2019 um 14:07 schrieb Jason Pyeron:
> Most of the form is saving and displaying just fine, since we
> carefully call setNeedToBeUpdated(true) after setting fields.
>
>
>
> Radio buttons seem to require a bit more. The actual value is there,
> but the display appearance is blank when going from Off to value, and
> the old value display is still shown when from going from old value to new
> value.
>
>
>
> Where is this properly documented? I have reviewed the examples,
> pdfbox website, stackoverflow, google, etc.
It's not documented, the whole incremental thing is hard to understand even for
me... I suspect you need to add "setNeedToBeUpdated(true)" on the appearance
state / dictionary too. Do a normal save and then look at your PDF with
PDFDebugger to see what's in the field / the annotation.
Then do an incrementalSave and look whether something is missing.
It may also be possible that you can profit from the experimental branch from
PDFBOX-45 (pdfbox/branches/issue45). See the comments around April 2019.
Tilman
>
>
>
> v/r,
>
>
>
> Jason
>
>
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