I have to print hundreds of single page PDF files and I wonder if I can detect if a PDF is black and white or color, I want to send black and white pdfs to a print queue and color ones to another.
I'm processing these pdfs in Java, can someone suggest me some technique?
I think you could give a try to PDFBox
In this example they extract an .icc (color profile) so may be what you are looking for.
How do you extract color profiles from a PDF file using pdfbox (or other open source Java lib)
I'm trying to create a PDF using iText library. The PDF has to embed an animation, which is a set of bitmaps. And there are buttons to control the animation. To understand it, see the following file:
http://www.texample.net/media/tikz/examples/PDF/wankel-motor.pdf
How can I create such a file from iText?
I know that I can embed a video file with this code:
http://itextpdf.com/examples/iia.php?id=188
But here I don't want to embed a video file, but a set of bitmaps and to add the control buttons.
Thanks in advance,
V. Henley
The document doesn't have any images. Instead it has a large series of Widget annotations inside a rectangle of which the lower-left and upper-right corners have the following coordinates:
llx = 4.981
lly = 287.238
urx = 322.053
ury = 542.754
These widget annotations are buttons that overlap each other and of which the appearance is defined using PDF syntax (paths consisting of straight lines and Bézier curves).
There are also a number of smaller buttons with arrows and other symbols. When clicking them, some JavaScript is executed:
The animations is actually JavaScript alternating the visibility of the different buttons. If you want to know more about the JavaScript that is used, you have to dig into the document using iText RUPS (which is what I did to create the above screen shot).
The principle that is used to create this PDF is identical to the principle that was used in the Calculator example, which is an example that was distributed with the same book you refer to.
Finally, I've been able to create such a PDF using latex code:
This is the latex code:
\documentclass[10pt]{article}
\usepackage{animate}
\usepackage{graphicx}
\usepackage{media9}
\pagestyle{empty}
\begin{document}
\AtEndDocument{%
\label{lastpage}%
}
\animategraphics[width=9.54cm,height=6.36cm,controls]{2}{C:/Users/casa/Documents/programacion/tex/construc_}{0}{3}
\end{document}
So after compiling such code with a latex compiler, it produces a pdf similar to the one I posted.
Kind Regards
I'm looking to automate filling out a pdf contract by putting variable text in predefined locations(such as a date or dollar value). I've been trying to wrap my head around iText as a solution but am having trouble actually stamping text onto a pdf. I would really appreciate an example snipped that simply stamps a piece of text on a specific (x,y) coordinate of a pdf file.
If there is a better solution than iText to my problem I would also love to hear other possible solutions.
I'm working on application in Java that will maintain database of song lyrics in plain text and print out some songbooks/chordbooks(that is create PDF file from selected songs). I was planing that the Java application will generate source code for pdflatex and after compiling this source user will get PDF file.
Lately I've run into a lot of problems because of latex limitation: fixed memory size (some pictures will also be drawn to PDF) - error when exceeded, no way to query end of line or and of page dynamically, it's very hard to override latex placement algorithm in a complex way,... see also some my other questions regarding latex. I come to conclusion that latex is not good option for automated PDF generation.
So I need replacement. I need to be able to typeset:
Chords over lyrics when the lyrics are in variable char width so I need to be able to measure text width
Chord diagrams that means I'll have to draw quite complex pictures
Each song on separate double page
Different fonts etc.
Thanks for all answers
Here are some PDF open source APIs
http://java-source.net/open-source/pdf-libraries
This has been asked many time, You might want to look at this post
IText is a free library which offers lots of capabilities for creating PDFs programmatically.
Rather than try to manage/calculate the complexities of the desired layout, you could try Docmosis. It will let you layout a document as a template using doc or odt formats. This means if you could make a doc or odt look like you want, you can turn it into a template and get Docmosis to render it as a PDF. Text and images can be placed inside or outside tables which makes layout fairly easy to manage.
ConTeXt is another TeX system, but it is easier to control the layout than with LaTeX. For drawing you could use PGF/TikZ or MetaPost. Support for both is available in ConTeXt. With ConTeXt's built in Lua scripting you could draw the chords automatically, assuming you have them stored in some sort of data structure.
why not just use lilypond with latex? it's meant for typesetting music.
We have some code which produces an RTF document from a RTF template. It is basically doing string search and replaces of special tags within the RTF file. This is accessible via a web page.
Typically, the processing time for this is really quick.
However, we need to embed an image within a template. We've been embedding these as JPEG images using Word's "Insert/Picture/From File..." functionality. But we've found that the resultant RTF file size is massively dependant upon the image.
For example, I've inserted a 20k JPEG logo (which is basically a solid background with some text). The RTF file increased in size from around 390k (without the image) to 510k (with the image).
Then we inserted a JPEG containing a screenshot, i.e. the image contains text, multiple colours, etc. The JPEG is around 150k. Using this image, the RTF file increased in size from 390k to 3.5MB.
So the encoding that Word uses for storing images into an RTF doesn't perform linearly. I'm guessing it is dependant upon what is in the JPEG image.
I need to keep the size of the RTF templates to a minimum to try and keep our file processing times to a minimum.
Does anyone have any ideas on how to minimize the size of the RTF files with embedded images?
Is there any way of controlling the encoding that Word uses? I can't see any options anywhere.
Does anyone know what type of binary encoding Word/RTF uses?
Thanks in advance.
Here is the best solution
http://support.microsoft.com/kb/224663
Excerpt:
SYMPTOMS
When you save a Microsoft Word document that contains an EMF,
PNG, GIF, or JPEG graphic as a different file format (for example,
Word 6.0/95 (.doc) or Rich Text Format (.rtf)), the file size of the
document may dramatically increase.
For example, a Microsoft Word 2000 document that contains a JPEG
graphic that is saved as a Word 2000 document may have a file size of
45,568 bytes (44.5KB). However, when you save this file as Word 6.0/95
(.doc) or as Rich Text Format (.rtf), the file size may grow to
1,289,728 bytes (1.22MB).
CAUSE
This functionality is by design in Microsoft Word. If an
EMF, a PNG, a GIF, or a JPEG graphic is inserted into a Word document,
when the document is saved, two copies of the graphic are saved in the
document. Graphics are saved in the applicable EMF, PNG, GIF, or JPEG
format and are also converted to WMF (Windows Metafile) format.
RESOLUTION
Warning If you use
Registry Editor incorrectly, you may cause serious problems that may
require you to reinstall your operating system. Microsoft cannot
guarantee that you can solve problems that result from using Registry
Editor incorrectly. Use Registry Editor at your own risk.
To prevent Word from saving two copies of the graphic in the document,
and to reduce the file size of the document, add the
ExportPictureWithMetafile=0 string value to the Microsoft Windows
registry.
An image in an RTF file gets stored as a WMF, uncompressed. On mac, it it would be macpict. Your best bet to keep the file size down is to link the image to the document rather than insert a copy in the document. The trade-off is that you have to keep the files together.
EDIT
Is compressing the RTF an option? Using zip/rar, you'll get your file size back, but you'll have to uncompress, first obviously. There are supposed to be tools that will do rtf compression, but I have never used them.
We have done a similar project over at work. Only we're not using that "Insert/Picture/From File..." functionality. Our template has a tag named [photos], as I presume your own does also. When we process the document we replace the tag with the RTF codes needed to display images. We're putting them within a table and we're displaying two images on each row, plus a row on top for the title.
So, you might place a tag [photos] in your template. Then you replace the tag with the RTF Codes. You can find some good references to these codes on the web. For eg. here
.
Now, my code looks something like this:
\par {\rtf1\ansi\deff0{\trowd\cellx8810 {title}\intbl\qc\cell\row}{\trowd\cellx4405\cellx8810{\pict\jpegblip\picwgoal4000\pichgoal3000\piccropl-50\piccropr-50\piccropt-50\piccropb-50\hex
Your image as an array of bytes in hexadecimal }\intbl\cell{\pict\jpegblip\picwgoal4000\pichgoal3000\piccropl-50\piccropr-50\piccropt-50\piccropb-50\hex
Your other image }\intbl\cell\row}
if you get your image into a byte array, you may use BitConverter.ToString(array) to get your hex code. only you'll need to replace dashes "-" by "";
Our files will take up less than 1/10th of the space a "normal" RTF will. If we open the doc's code with an editor such as Notepad++, we can see the RTF codes, but if we open the document and save it as RTF (changing its name), it'll go from 1.5Mb to 50Mb!!
I'm guessing DaveParillo's reply justifies it: I'm only writing each image once.
Hope it helps.
Cheers mate
Initially, keep in mind that each byte is stored using 2 characters (two bytes), this means that the increments at least is the double size of original picture.
Other things that you need is that Word and Word Pad insert different (flavor or format) of the same image plus other fields (that RTF can to be displayed without them).
Here are some scripts used to insert images in RTF (https://joseluisbz.wordpress.com/2011/06/22/script-de-clases-rtf-para-jsp-y-php/), and one example of use (https://joseluisbz.wordpress.com/2011/07/16/subiendo-imagenes-png-y-jpg-y-archivos-a-mysql-con-php-y-jsp-y-mostrarlos-en-rtf-usando-clases/)
Now, maybe you will need replace the original Image with another (http://joseluisbz.wordpress.com/2013/07/26/exploring-a-wmf-file-0x000900/).
The Swartbees answer worked perfectly for me. I first reduced the image quality to "0" using G.I.M.P. Save as jpeg functionality. After following the microsoft solution suggested by Swartbees above I reinserted the picture into the file and the size increase was negligible 229k to 279k (as opposed to 29000kb).
Thanks for your suggestions guys.
Yes, by removing the redundant characters. And to do this you must insert them back into your stream.
For instance if you have over twenty f characters in one line, then you can replace with f[20] in your stream. It is a start.
-Best of luck.