Right now I'm working on displaying LaTeX generated document with Java.
Strictly speaking, LaTeX source can be used to directly generate two formats:
DVI using latex, the first one to be supported;
PDF using pdflatex, more recent.
However rendering dvi or pdf is not available as far as I know.
Is there any way to handle those formats ? Or maybe others that makes sense ?
There are not enough details with regards to how you wish to "render" DVI or PDF from a LaTeX document. However, you could always just render the pdf using pdflatex and DVI using latex and use ICEpdf for viewing PDFs and javaDVI for viewing DVIs.
Another neat hack to display pdf in a panel is to pass the file path to an embedded web component in the application, and the web component will use whatever pdf rendering tool is available on your machine (Acrobat, Foxit, Preview, etc.)
I remember there was a post about this a long time ago.
I don't think there's a generic way to preview the rendered output without generating the file itself. You can write your own LaTeX engine which caches the output every few seconds and displays that but regardless of the storage, you have to output it somewhere physically and then render the output separately using any of the steps mentioned above.
Another approach is to convert the div output to an svg image file and render that with SVGGraphics2D. That will produce nice scalable results. Dvi files can be converted to svg on the command line (or in a script) using:
dvisvgm --no-fonts input.dvi -o output.svg
For more conversion options see this thread on how to convert pdf to clean svg.
Related
I am using Inkscape to Convert my PDF to SVG file and I would like to change the text content using the xml format in SVG. However, the changed text font seem to be very different and the alignment is totally off from the original place.
Hence, how can I edit the text content using SVG? is there any other tool can be done by converting the PDF to SVG and edit the text content?
There are differences in the 2 formats that can cause issues when converting from pdf to svg, take a read over this guide. It's suggested to try pdf2svg if you don't mind getting your hands dirty.
Excerpt below:
Conversion with Inkscape
Download Inkscape from www.inkscape.org (version 0.46 and above)
Download the PDF you want to convert
Run Inkscape
Open the PDF file you want convert in Inkscape (not Acrobat)
Uncheck Embed images on the box that comes up and click OK
Wait a little while as Inkscape converts it
Click File>Save As..
Under Save as type:, choose "Plain SVG (*.svg)"
Click Save in the bottom right corner
Done! You now have an SVG file with the same name as the PDF, but with the .svg extension
Before uploading you may assure its W3C-validity, with tool SVG-check
For checking that it displays properly, upload it first to Test.svg
Upload the SVG to Wikimedia Commons and tag it with {{Extracted with Inkscape|v}}
Conversion with PDF2SVG
Some versions of Inkscape do not have PDF support compiled in; also, text importing does not always produce satisfactory results in Inkscape. In that case, you might try performing the conversion with the PDF2SVG command line tool. (It requires that Poppler, Cairo, and X are installed on your system.)
Get PDF2SVG from http://www.cityinthesky.co.uk/opensource/pdf2svg/ and compile it. If you are using Linux or FreeBSD or MacPorts, PDF2SVG might also be installable via the package installer.
Convert the PDF with pdf2svg file.pdf file.svg
If necessary use Inkscape to edit the resulting SVG.
Looking for a Java based PDF creation library. We're currently using Apache Velocity with HTML to render PDFs on the fly.
We'd like to be able to find a way to render large images (sometimes as big as 3000 x 1700) in a creative manner within the PDF container. For instance, a scrollable image pane within a PDF. This might not be possible within a PDF, I might be wrong.
Open source would ideal.
For a good PDF library you should take a look at iText: http://itextpdf.com/
I have used images of around 5000x4000 with iText without any problems.
I don't know if it is possible to create a working scrollpane inside a PDF, unless of course you were doing it through a custom PDF creator/viewer.
iText is open source but make sure to check out the AGPL license before you use it commecrially: http://itextpdf.com/terms-of-use/agpl.php
For just creating PDF files from images iText is a little overdimensioned. Give xsPDF a chance, it has no limits for images sizes and seems to be appropriate for your problem.
Just a FYI for anyone that may run into this in the future:
I used a library called PDFBox (http://pdfbox.apache.org/) to open a pre-existing PDF and modify the PDF with a custom sized PDFRectangle with the dimensions of the image. Then inserted the image and rectangle into that new page and got the desired results.
I didn't realize you could have multiple page sizes in a single PDF.
I would like to have a preview of a .pdf, .docx or .doc file inside a JDialog. But I'm unable to find previewers that allow nesting of such previews inside a Swing application. Alternatively are there any previewers that can transform such files into .html and then display them in a TextPane.
Fidelity isn't that much of an issue as is embedding and ease of use. Also I don't require one tool to be able to preview all types of files.
That's a tough one because of the formats you're dealing with. You might want to try ImageMagik for PDF -> image format for display in your TextPane. If that works well enough for PDFs, then you could use JOD Converter or Docmosis to get from Doc -> PDF then ImageMagick again for a display image. JODConverter and Docmosis are based on OpenOffice which can do pretty rough html / xhtml output as another option for display. The latest version of OpenOffice can read docx also, meaning all your bases are covered, and if fidelity is not too big a deal as you've indciated, then JODConverter/Docmosis and ImageMagick might be a combo you can use.
We've got an application that displays PDF files in an IFrame at specific Named Destinations. This works well on Windows systems but not Mac. In Safari, with Acrobat, the Named Destination is ignored and the document is displayed at the start.
Does anyone have any suggestions on how we might accomplish the task of displaying this information? Our initial thoughts are to:
Convert the PDF to HTML on the fly and display the HTML version in the IFrame
Convert the PDF on the page referenced to another format such as PNG etc. and display that in the IFrame
Utilize some kind of Java app that allowed us to render the PDF while honouring the Named Destination (not sure if this exists)
Any other ideas on a potential method of better displaying PDF files at Named Destination points that is a little more cross platform?
EDIT: I guess another option is to store the data in XSL/XSLT type format and convert to HTML for veiwing or PDF for saving to the desktop.
Not much help, but I found that alternative ways to display PDF files (other than the Acrobat Reader client) are few and far between. As you say, the commonly accepted way to render PDF's in something that doesn't natively support it seems to be converting it "something else", which is supported (even Acrobat.com does it this way in their Flex client if I remember it correctly).
Even converting the PDF document to other formats may be disappointing - especially if you expect a certain level of quality. It may also introduce server-side performance issues.
I realise this doesn't help anyone much but I'm interested to see if any other suggestions come up. We've dealt with this problem before in the same way, using IFrame controls (but without named destinations) but I'm very much interested in other suggestions/ideas as well.
I am working on a web application (using Grails) which will generate a gift certificate. I'm thinking of a workflow like this:
The user will pick a template which will be stored as an image.
Then the text (name, date, amount etc) will be overlaid on the image to make the final certificate. There is a set of co-ordinates associated with each template which describes where to put each bit of text.
There is a kind of 'live preview' in the browser which shows the user what the final certificate will look like.
When the user is happy with the results, they download the certificate as a PDF and print it.
Can anyone recommend a library for Java (or Groovy) that will make it easy to do this? I'm not particularly worried about speed, as I suspect that the webapp will only be used by a few people at a time.
UPDATE: in the end I used the iText PDF library to overlay text on a PDF template using PDFStamper.
You can do this with the standard Java 2D graphics libraries - create a BufferedImage from the image, get its Graphics and use drawString() to put the text on top. Of course, the text would then be part of the bitmap in the resulting PDF, and not use the full printing resolution.
In addition to the answers above, I have come across the groovy library GraphicsBuilder and the Grails plugin j2D which are also potiential solutions.
You might consider using Batik to do this as SVG. Your image would be an <img> tag and your text would be one or more <text> tags. There's a converter (called FOP, I believe) which will get you PDF output.