Given an acrokey, is it possible to find the absolute position and dimension of that particular field (getLeft, getTop, getWidth, getHeight) ?
And is the viceversa possible - if I know the position, can I get the acrokey of the field?
First part of your question:
Suppose that you have an AcroFields instance (form), either retrieved from a PdfReader (read only) or a PdfStamper instance, then you can get the field position of the first widget that corresponds with a specific field name like this:
Rectangle rectangle = form.getFieldPositions(name).get(0).position;
Note that one field can correspond with multiple widgets. For instance, to get the second widget, you need:
Rectangle rectangle = form.getFieldPositions(name).get(1).position;
Of course: you probably also want to know the page number:
int page = form.getFieldPositions(name).get(0).page;
Second part of your question
Fields correspond with widget annotations. If you know the page number of the widget annotation, you could get the page dictionary and inspect the entries of the /Annots array. You'll have to loop over the different annotations, inspecting each annotation's /Rect entry. Once you find a match, you need to crawl the content for the field that corresponds with the annotation. That's more work than can be provided in a code sample on this site.
Related
I'm struggling with a little Java Project:
I made a Program which autofills a PDF Formular. Mostly everything works fine for me, but there is a Problem: In this PDF Formular (which is given from my company, so I have to deal with this document) is a equation Field, which is used for calculation the Costs from Number of Items and the single Price. When I insert the Price of a single Item as a String to my PDF
public void setEinzelpreis(String Einzelpreis)
{
try {
fieldList.get(30).setValue(Einzelpreis);
...
There should be the single Price on the empty field in the first row. The last Cell of the row is auto-calculated by the pdf.
When I Click in the PDF in the "empty" Field, the Value appears:
When I click to another Field, the Value disappears. This is my Problem.
I'm getting the FieldList via pdfbox and the Code for getting my fieldList of the PFD is:
try {
pdfTemplate = PDDocument.load(template);
PDDocumentCatalog docCatalog = pdfTemplate.getDocumentCatalog();
PDAcroForm acroForm = docCatalog.getAcroForm();
if (acroForm != null)
{
// Get field names
fieldList = acroForm.getFields();
}
...
So, can anybody tell what I'm doing wrong? Maybe the PDF wants a double Value for the equation and I am giving a String? But I don't know how to write a double in the FieldList. Thanks a lot for every hint!
Edit:
The PDF File which I'm using:
https://1drv.ms/b/s!Av6exjPNXlgOioouAuXL6QV4eUGkqg?e=ocfhvC
And this is the file I generated:
https://1drv.ms/b/s!Av6exjPNXlgOioovK-HuRuXW2aRy_w?e=D1ZCA8
The strange thing is: when I change the value in the document by hand, everything acts normal, even with a different Document Viewer.
First of all, the AcroForm form structure in your PDF is weird. It looks like someone used a graphical form generation tool he did not understand and clicked, dragged, dropped, copied, ... until the form in a viewer did what he wanted, not caring about it having become difficult to maintain.
In particular the Einzelpreis fields have a completely unnecessary structure of intermediate and final fields, e.g.
Thus, the field Einzelpreis in € exkl USt1 (the '€' is missing in the tree above) is not the one to fill in, it's merely an intermediary field. The actual form field to fill in is Einzelpreis in € exkl USt1.0.0.0.0.
Unfortunately you in your code simply grab the 30th field in the field list returned by PDAcroForm, and this field happens to be the intermediary field Einzelpreis in € exkl USt1; as an intermediary field it has no visible widgets of its own, so your setValue call doesn't change the visible Einzelpreis.
The JavaScript instruction calculating the Gesamtpreis uses the value from the final field, too:
AFSimple_Calculate("PRD", new Array ("Anzahl1", "Einzelpreis in € exkl USt1.0.0.0.0"));
But as the field value is inheritable and none of the .0 fields has an own value, the calculation sees the 100 once form calculation has been triggered and uses it.
Thus, you should fill the Einzelpreis in € exkl USt1.0.0.0.0 field instead. And the more secure way to retrieve it is not by index in a field list but by name:
PDField fieldByName = acroForm.getField("Einzelpreis in € exkl USt1.0.0.0.0");
(excerpt from FillInForm test testFill2020_04BeschaffungsantragEinzelpreis)
After filling that field, the "100" should be visible in your form.
The remaining problem that the Gesamtpreis value is not calculated is due to the fact already mentioned by #Tilman in a comment to the question: PDFBox doesn't use javascript. Thus, you have to calculate those values yourself and update the fields in question accordingly.
If you need to know the correct name of a form field, you can do as Tilman proposed and use the PDFBox PDFDebugger. If you hover over the field there, it will display the name in the status bar at the bottom.
By the way, the AcroForm method getFields won't return the field required here anyways. As documented in its JavaDocs, this method will return all of the documents root fields, no fields further down in the hierarchy, at least not immediately. (From the user perspective the method name getFields is a misnomer. It is accurate, though, from the PDF specification perspective as the corresponding entry in the AcroForms object has the key Fields.)
Beware, though, you probably will have to update your PDFBox version. In earlier versions PDFBox did not update appearances of fields with JavaScript actions (believing some JavaScript would fill it in anyways). I used the current 3.0.0-SNAPSHOT in which that behavior has been changed.
How can I start a new page at paragraph level? I know I can do this at document level, but this would break my formatting.
Perhaps there is function to find the remaining lines on page depending on font and fontsize?
You can definitely do this.
But it requires some knowledge about how iText renders its content.
Internally, when a Paragraph object is rendered, it uses a ParagraphRenderer. Each ParagraphRenderer has one or more LineRenderer objects as its children. And similarly, each LineRenderer has one or more TextRenderer objects.
In order to get information about where a paragraph would be split, you can ask the Paragraph object to perform layout against a given LayoutContext object (which contains the width and height of available space, as well as some other useful information), and get the LayoutResult back.
LayoutResult will be able to tell you where the Paragraph was split.
Try the following piece of code.
w denotes the available width
h denotes the available height
Rectangle layoutRect = new Rectangle(w,h);
LayoutArea layoutArea = new LayoutArea(1,layoutRect);
LayoutContext context = new LayoutContext(layoutArea);
Text layoutText = new Text(s);
layoutText.setTextRise(0f);
layoutText.setSplitCharacters(new DefaultSplitCharacters());
layoutText.setFont(font);
layoutText.setFontSize(fontSize);
Paragraph p = new Paragraph().add(layoutText);
LayoutResult hwResult = p.createRendererSubTree().layout(context);
At that point, use an IDE to inspect the LayoutResult object. If the text was split, you should see a SplitRenderer, which can give you more information.
I want to create a simple spreadsheet in docx4j / xlsx4j. It shall contain only Strings, no formular is needed. The porpuse is basically switching from a CSV to XLSX
Therefore I tried the example here: https://github.com/plutext/docx4j/blob/master/src/samples/xlsx4j/org/xlsx4j/samples/CreateSimpleSpreadsheet.java
Unfortunetly it is not working. Even after removing the deprecated parts ( http://pastebin.com/bUnJWmFD ).
Excel reports unreadable content and suggest a repair. After that I get the error: "Entfernte Datensätze: Zellinformationen von /xl/worksheets/sheet1.xml-Part". It means something like "removed datasets: Cellinformation at /xl/worksheets/sheet1.xml-Part".
This error occures when createCell is called in line 58 (see. Github, not pastebin) or cell.setV is called with "Hello World" instead of "1234"
I think you are raising 2 issues here:
the resulting XLSX needing repair: this was the result of a typo in cell2.setR, fixed at https://github.com/plutext/docx4j/commit/7d04a65057ad61f5197fb9a98168fc654220f61f
calling setV with "Hello World", you shouldn't do that. Per http://webapp.docx4java.org/OnlineDemo/ecma376/SpreadsheetML/v.html
This element expresses the value contained in a cell. If the cell
contains a string, then this value is an index into the shared string
table, pointing to the actual string value. Otherwise, the value of
the cell is expressed directly in this element. .. For applications
not wanting to implement the shared string table, an 'inline string'
may be expressed in an <is> element under <c> (instead of a
<v> element under <c>),in the same way a string would be
expressed in the shared string table.
though I guess our setV method could detect misuse and either throw an exception or do one of those other things instead.
The CreateSimpleSpreadsheet sample as it stands shows you how to set an inline string, so you just need to test whether your input is a number or not.
In a Java class in my XPages application, I'm trying to get a handle on a Notes Document in a Notes View. The Notes View contains several Notes Documents. To get the Notes Document I want, I use 2 keys. This produces an error. If I use just one key, the first Notes Document in the Notes View is returned. The Notes View contains two sorted columns. The first column contains the empLang value, the second column contains the templateType value. Here is my code:
String empLang = "en";
String templateType = "C";
Database dbCurr = session.getCurrentDatabase();
String viewName = "vieAdminTemplates" + empLang;
View tview = dbCurr.getView(viewName);
Vector viewKey = new Vector();
viewKey.addElement(empLang);
viewKey.addElement(templateType); // this line causes the code to fail
Document templateDoc = tview.getDocumentByKey(viewKey);
What could be the cause of this problem?
A couple of ideas
1) You could concatenate the key into a single column since you said that worked. Something like 'en~C'
2) You could use the database.search method where you include a string of formula language that isolates the document you want. It returns a collection, and then you pull the document from there.
getDocumentByKey works with multiple columns. There's a known problem with doubles, but you're not hitting that there. One thing that stands out is the second column is just a single letter. That could be considered as a Char instead of a String, either when you do addElement or by the view.
I'd recommend debugging out what data type they are. viewKey.get(1).getClass().getName() I think gives you the class it's stored as. Doing the same for the View Column value.
When you say it causes the code to fail, how does it fail? Does it just not return anything or throw an error?
My next step would be to try testing it where the View and the Vector contain more than one character, e.g. "CC", to help check if there's an underlying issue with Java getDocumentByKey and single characters.
I'm very sorry. The problem here is that the view name in the code is incorrect. There is a view "vieAdminTemplates" but it does not have a second column containing the value "C". With the correct view, the code works fine. Thanks for taking the time to respond to my question.
I'm using ASM4 for some Java bytecode manipulation. I want to copy some code from one method to another one. The latter has some additional code and because of that every LabelNode from the first method must be remapped.
The problem arise when local variables needs to be inserted. I followed this pattern: get the local variables from first method, create a copy of it with index and start label and ending label nodes modified. The visitor used to get the local variable has this form:
public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index)
and the code that should insert a new local variable look like this:
localVariableList.add(new LocalVariableNode((String name, String desc, String signature, LabelNode start, LabelNode end, int index)))
Problem is, the info field from Label object is null, therefore I can't get a reference of the old LabelNode so that I could remap with my new label nodes.
I also tried to get the offset from the code with label.getOffset() and then remap the offset to a list of offsets associated with my new list of LabelNode but I get an exception:
java.lang.IllegalStateException: Label offset position has not been resolved yet
at org.objectweb.asm.Label.getOffset(Unknown Source)
If any of you has an idea of how could I get the corresponding LabelNode from a Label would be much appreciated.
Or maybe there's a better approach on copying the code from one method to another one and resolving the issue with labels, lablenode's and localvariables.
Most of the time I use the tree API because of it's simplicity.
Thank for you help.
There is an example of similar transformation in "Inline Method" section of my AOSD'07 paper.