To this method, you need to pass an integer representing the rotation angle by which you want to rotate the image. The following Java program demonstrates how to rotate an image by a given angle on a PDF document using the iText library. It creates a PDF document with the name rotatingImage.
The PdfAnnotation class of the package com. Among its derived classes, PdfTextAnnotation class represents the text annotation. Create an object of this class as shown below. Set color to the annotation using the setColor method of the PdfAnnotation class.
To this method, pass the color object representing the color of the annotation as a parameter. Set the title and contents of the annotation using the setTitle and setContents methods of the PdfAnnotation class respectively, as shown below.
Create a new PdfPage class using the addNewPage method of the PdfDocument class and add the above annotation using the addAnnotation method of PdfPage class, as shown below. The following Java program demonstrates how to add text annotation to a PDF document using the iText library.
It creates a PDF document with the name textAnnotation. Among its derived classes, PdfLinkAnnotation class represents the link annotation. Create an object of this class, as shown below. Set action to the annotation using the setAction method of the PdfLinkAnnotation class, as shown below. Create a link by instantiating the Link class of the package com. Create a new paragraph by instantiating the Paragraph class and add the link created in the previous step using the add method of this class, as shown below.
Add the paragraph to the document using the add method of the Document class, as shown below. The following Java program demonstrates how to add link annotation to a PDF document using the iText library. It creates a PDF document with the name linkAnnotation. Once a PdfDocument object is created, you can add various elements like page, font, file attachment, event handler using the respective methods provided by its class.
Among its derived classes, PdfLineAnnotation class represents the line annotation. Create a new PdfPage class using the addNewPage method of the PdfDocument class and add the above created annotation using the addAnnotation method of PdfPage class, as shown below. The following Java program demonstrates how to add line annotation to a PDF document using the iText library. It creates a PDF document with the name lineAnnotation. In this chapter, we will see how to add text markup annotation to a PDF document using iText library.
Among its derived classes, PdfTextMarkupAnnotation class represents the text markup annotation. Set the title and contents of the annotation using the setTitle and setContents methods of the PdfAnnotation class respectively. The following Java program demonstrates how to add text markup annotation to a PDF document using the iText library.
It creates a PDF document with the name markupAnnotation. Among its derived classes, PdfCircleAnnotation class represents the circle annotation. The following Java program demonstrates how to add circle annotation to a PDF document using the iText library.
It creates a PDF document with the name circleAnnotation. To draw an arc on a PdfDocument, instantiate the PdfCanvas class of the package com. Instantiate the PdfCanvas object of the package com. Draw the arc using the arc method of the Canvas class and fill it using the fill method, as shown below. The following Java program demonstrates how to draw an arc in a PDF document using the iText library.
It creates a PDF document with the name drawingArc. Set the initial point of the line using the moveTO method of the Canvas class, as shown below. Now, draw a line from this point to another point using the lineTo method, as shown below. The following Java program demonstrates how to draw a line in a PDF document using the iText library. It creates a PDF document with the name drawingLine. To draw a circle on a PdfDocument, instantiate the PdfCanvas class of the package com.
Instantiate the PdfDocument class by passing PdfWriter object to its constructor, as shown below. Set the color of the circle using the setColor method of the Canvas class, as shown below. The following Java program demonstrates how to draw a circle on a pdf document using the iText library. It creates a PDF document with the name drawingCircle. Listing 5 illustrates the code to accomplish the first task, to get field data. The one thing to take note of is that in all cases, the value retrieved is a string.
Once a field value is rendered on a PDF, it's a string and often, it's a formatted string, as would be the case for phone numbers, dates, and social security numbers, to name three examples. A PdfField array where each element contains the field name, the value, and the formatted value.
Listing 7 illustrates the PdfField Class. Why doesn't the SetData method use the getFormFields method? The getFormFields method closes the PdfDocument instance. Accordingly, while you strive for maximum re-use, practicality often dictates that you sometimes need to put that ideal on the shelf. Why is the field value in this context always a string.
It has to do with the context in which the data is being used. When you render data in a report, the fact that the underlying value is a date, integer, or Boolean type isn't important. When you deal with and manipulate data in code, its underlying data type matters. Integers are a great example. In code, an integer value will be The PDFLibrary simply takes that information and applies it. From a separation of concerns standpoint, the PDFLibrary isn't concerned with how or why a given piece of data is an integer or a date or why it's displayed in a certain way.
Rather, the PDFLibrary takes the data as it finds it. The PDFLibrary is stateless. It accepts arguments immutable arguments, to be precise , acts on those arguments, and provides an immutable response. The PDFLibrary is inherently thread safe. Therefore, there's nothing to be gained from creating an PDFLibrary instance variable. If you don't need to create state, don't. If you don't need a variable, don't create one. The same goes for always implementing a Using statement when the underlying class implements the IDisposable interface.
The best place to start is with the unit tests. In the Web application, I'll cover how to create an abstraction to the PDFLibrary that's better suited to meet the Web application's needs. My Subscriber Account Advertise Write. Training Home State of. Staffing Home Looking for Staff? Looking for Work?
Contact Us. Dark Kimbie. Published in:. Filed under: iText PDFs. The provision I want to draw your attention to is the final paragraph: You can be released from the requirements of the license [AGPL] by purchasing a commercial license. Write field data to a PDF byte array. Additional functions include: Determining whether a given file is a PDF. Retrieving a field name list from a PDF. Figure 2: HelloWorld. There are several problems with the code.
First, although the text mentions that streams can be used to create files, nowhere is that technique demonstrated. Instead, they just show a figure with a rendered PDF, notwithstanding the fact that the helloworld. Second, in the real world, not all layers in your application architecture have knowledge of or can use a file path.
This is especially true if you're using loosely coupled services as you should be using. In the real world, you need to deal with byte arrays and streams to read from and write to components that, in turn, will eventually write that data to some source, whether it's a disk or another service. Instantiate the PdfDocument class by passing the above created PdfWriter object to its constructor, as shown below. Once a PdfDocument object is created, you can add various elements like page, font, file attachment, and event handler using the respective methods provided by its class.
The Document class of the package com. One of the constructors of this class accepts an object of the class PdfDocument. When we trying to implement pagination as 1 of 3, 2 of This approach brings challenges in removing the intermediate pdf document. Is there any way by which page numbers can be determined during the time we create the pdf very first time so that we will avoid creating one resultant pdf document? Please download the free ebook The Best iText Questions on StackOverflow and read the questions listed in the chapter entitled "Page events".
These are some of the questions that were selected for this book:. You can also look at the keywords page on the official iText site, more specifically at the key word Page X of Y.
In your question, you refer to creating an intermediate document. That's what the TwoPasses example is about.
You are asking for a way to add Page X of Y in a single pass. That's what the MovieCountries1 example is about. As you can see, we create a small place holder named total in the onOpenDocument method.
As we don't know in advance what the total number of pages will be, we add this placeholder to each page without knowing what the page total will be. We only know the final page count when we close the document, and that's why we wait until the onCloseDocument method is triggered to add content to the placeholder. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
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