HexaPDF
xournalpp
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HexaPDF | xournalpp | |
---|---|---|
26 | 221 | |
1,176 | 10,106 | |
- | 3.3% | |
9.3 | 9.4 | |
6 days ago | 8 days ago | |
Ruby | C++ | |
AGPL-3.0, Nonstandard | GNU General Public License v3.0 only |
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HexaPDF
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Question about Yard
An example for a very simple setup is the cmdparse gem documentation. It only has a few additional documentation files that accompany the main API documentation. The other end of the spectrum is the documentation for HexaPDF which encompasses many additional documentation files besides the API documentation and deeply integrates the API docs into the whole documentation website.
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HexaPDF Extras - Additional functionality for the HexaPDF library
I have just released my new gem hexapdf-extras which provides additional functionality on top of the HexaPDF library.
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Understanding Text in PDF
Regarding TrueType font support: What I meant was that the library isn't a full TrueType font library but contains just the parts necessary for PDF supports. So what it can do is write a subset of a TrueType file because that's needed. But it can't serialize any arbitrary TrueType tables and it only handles those TrueType tables needed for displaying text in PDF. More advanced things like glyph positioning based on the language and characters in question is also not supported but may be in the future. Have a look at https://github.com/gettalong/hexapdf/tree/master/lib/hexapdf/font/true_type/ to see the implementation. All the things in this folder and below should be independent of PDF.
TrueType subsetting mainly consists of generating the necessary glyph and various index tables, and copying over all the other necessary tables which don't need to be adjusted. See https://github.com/gettalong/hexapdf/blob/master/lib/hexapdf/font/true_type/subsetter.rb for what is needed to subset.
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What do you use ruby for?
for all my PDF processing needs, courtesy of HexaPDF,
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One Class/Module per File Rules - Working With Nested Modules
Break the "rules" if need be. There is no need to separate out small classes into their own file because "something says so". If one were to look for the file of such a class, they would see there isn't one and automatically look into the file of the parent module/class. See e.g. https://github.com/gettalong/hexapdf/blob/master/lib/hexapdf/type/annotation.rb
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[WIP] Creating Digital Signatures for PDFs with HexaPDF
I'm currently in the process of adding support for digital signatures to HexaPDF.
The code for all this is in the devel branch if you want to try it out.
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Free / low cost software to remove a page from PDF on Windows 10?
There are a variety of command line tools like HexaPDF and qpdf that can do this; however, they need to be used on the command line.
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Hooking into RDoc for better documentation with automatically executed examples
After I got some feedback about missing examples in the API documentation of HexaPDF, I decided to do something about it.
xournalpp
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Rnote – An open-source vector-based drawing app
I highly recommend Rnote to anyone on Linux that misses the "hodgepodge" notetaking of apps like OneNote. It works like a dream on touchscreens and drawing tablets, with a surprising amount of configuration under the hood.
Also worth noting is Xournal, an older but similar project: https://xournalpp.github.io/
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Book list for streetfighting computer scientists
I've been using Xournalpp[1] for many years, highlighting books as I read them, adding in text/hand drawn annotations in whitespaces if necessary. Unlike other PDF readers/annotators, it saves a separate file, so the original PDF is untouched. It can also export the annotated PDF as a new PDF with highlights and annotations.
Obsidian[2] also has PDF support, where you can open a markdown document side by side with the PDF to take notes as you read. I think it also lets you highlight the PDF itself.
Emacs I think has a similar feature, via plugins/org-mode(?) to the Obsidian setup.
And of course your typical PDF reader probably has support for highlighting PDFs too, but I find them clunky and they save by exporting a PDF, which can be a bit heavy-handed IMO compared to just saving the annotations/highlights as a separate file as Xournalpp does.
- A kernel update broke my stylus
- PicoCalc
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Combined metric for finding and decoding (digitally) handwritten text on a page?
Currently, I am trying to build a small open source NLP project for which I first find text on a page and then translate it; see the current project state here: https://github.com/PellelNitram/xournalpp_htr. The purpose of this project is to make handwritten text in Xournal++ searchable for all users.
- Pdftool.org: modify pdfs offline in the browser
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What should I use to take notes in college?
you can try xournal++ https://github.com/xournalpp/xournalpp
- Where does it end? Subscription License Increase.
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Alternative to MS OneNote that’s truly as good? Flair is limited but more precisely is I’d like cross-platform.
On Linux, Xournal++ is the best thing that can do inking. https://github.com/xournalpp/xournalpp
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Project management tools
Personally, I've used xournal++ for a few semesters, but I would be lying if I've said that it's anywhere near feature parity with OneNote. There's also Styluslabs Write, but it generated files that are a little difficult to manage. Obsidian is also a great choice, but it's markdown only, if you're expecting pen support
What are some alternatives?
rnote - Sketch and take handwritten notes.
obsidian-excalidraw-plugin - A plugin to edit and view Excalidraw drawings in Obsidian
notekit - A GTK3 hierarchical markdown notetaking application with tablet support.
logseq - A local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base. Use it to organize your todo list, to write your journals, or to record your unique life.
onenote - 📚 Linux Electron Onenote - A Linux compatible version of OneNote
Prawn - Fast, Nimble PDF Writer for Ruby
Trilium Notes - Build your personal knowledge base with Trilium Notes
Wicked Pdf - PDF generator (from HTML) plugin for Ruby on Rails
Joplin - Joplin - the secure note taking and to-do app with synchronisation capabilities for Windows, macOS, Linux, Android and iOS.
vimtex - VimTeX: A modern Vim and neovim filetype plugin for LaTeX files.
QOwnNotes - QOwnNotes is a plain-text file notepad and todo-list manager with Markdown support and Nextcloud / ownCloud integration.
Pdfkit - A Ruby gem to transform HTML + CSS into PDFs using the command-line utility wkhtmltopdf