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PDFSketch

PDFSketch is currently alpha quality software: it is not feature complete and will probably crash. However, if you use it carefully, it can function.

PDFSketch is a PDF annotator/editor. It can be used to mark up a PDF file with text, circles, freehand squiggles, and checkmarks.

The top row of buttons is actions to perform. The next row of buttons it the current tool you have selected.

License

This project is dual license BSD and GPL v2. Keep in mind that Poppler is GPL v2, so this codebase is effectively GPL v2 unless you get a non-GPL license from the Poppler team.

Building

The core of the app is written in C++, using poppler to render

If on Chome OS device, get crouton going:

sudo sh -e ~/Downloads/crouton -t xfce
sudo enter-chroot

Make sure you have the right tools:

sudo apt-get install git make lib32stdc++6 g++ zip cmake

Install NaCl SDK from https://developer.chrome.com/native-client/sdk/download . use pepper_33

unzip nacl_sdk.zip
cd nacl_sdk
./naclsdk install pepper_33

Check out modified naclports from https://github.com/adlr/naclports (use branch ‘pdfsketch’)

set env variables: (you probably want to make a script so you don’t need to redo these each time). Fix the paths to match your environment.

export NACL_SDK_ROOT=$(readlink -f ~/Downloads/nacl_sdk/pepper_33)
export NACL_ARCH=pnacl

Build PDFSketch dependencies:

cd naclports
make cairo
make poppler
make protobuf
make libtar
make podofo

build protocol compiler locally:

cd somewhere
tar xzvf .../path/to/naclports/out/tarballs/protobuf*.tar.gz
cd protobuf*
./configure && make
sudo make install

Check out PDFSketch and build it:

# Note, I had to modify LD_LIBRARY_PATH to make protoc find its required libraries
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/usr/local/lib make dist.zip

You can then navigate Chrome to chrome://extensions and load this as an unpacked extension.

Enabling printf debugging

On Linux, you need to run chrome like this: (You may want to make a script called chrome-debug.sh). You can pick any location for the output files.

export NACL_EXE_STDOUT=/usr/local/nacl/stdout.txt
export NACL_EXE_STDERR=/usr/local/nacl/stderr.txt
google-chrome --enable-nacl --no-sandbox

On Chrome OS, you'll need to disable rootfs verification, then edit /sbin/session_manager_setup.sh. At the end of the file you'll find a giant chrome command line. Add --enable-nacl --no-sandbox there. Then right before the call to chrome, add:

export NACL_EXE_STDOUT=/usr/local/nacl/stdout.txt
export NACL_EXE_STDERR=/usr/local/nacl/stderr.txt

Then, restart the ui to get the new chrome:

sudo restart ui

Remember that chrome need permissions to write those output files!