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Slice up PDFs like a pro.

Project description

Slice up PDFs like a pro:

% bocho my-fancy-file.pdf --pages 1 3 5 6 10 --angle 30 --zoom 1.6
my-fancy-file-bocho-630x290.png

Takes a PDF file and creates a “stacked page” preview from a selection of pages.

It accepts a bunch of options for customising the output (pass the -h flag for details).

Installation

Requires ImageMagick so you might need to, e.g:

% sudo apt-get install imagemagick

If you want to use Wand instead of calling convert directly, you’ll also need to perform some some additional steps, e.g:

% sudo apt-get install libmagickwand-dev
% pip install wand

See their installation instructions for more details.

On OS X, you’ll want to use Homebrew to get the low-level dependencies in place:

% brew install ghostscript imagemagick

Once all that’s sorted, you just need to pip install deba-bocho.

Usage

For information on usage, run bocho --help. If you want to use it as a module:

>>> import bocho
>>> help(bocho.assemble)

Configuration

If you will be using the same options many times, it’s probably worth creating a preset in a config.ini file (see config.example.ini or the example below to get started).

By default, bocho will check for $HOME/.config/bocho/config.ini, so it’s probably best to keep your config there, but you can pass the --config option with the path to an alternative location.

[example]
pages = 1,3,5,7,9
width = 630
height = 290
border = 4
reuse = true
delete = true
verbose = true
use_convert = true

You can tell bocho to use this preset by calling:

bocho /path/to/file.pdf --preset example [--config /path/to/config.ini]

TODO

  • implement rotation properly ✓
  • allow a “zoom” option ✓
  • optional drop-shadows ✓
  • make shadows smarter in their orientation (they’re currently uniform, not respecting the angle / affine transformation)
  • make the basic edge separators optional ✓
  • automatic spacing as an option as well as fixed pixel spacing
  • horizontal and vertical spacing ✓
  • horizontal and vertical offsets ✓
  • optional right-to-left stacking ✓
  • handle non-A4 aspect ratio input documents ✓
  • optionally apply transforms:
    • affine ✓ (basic, subtle, non-configurable)
    • perspective
  • ensure sliced PNGs are large enough when custom width / height are specified
  • fix x and y spacing calculation to account for any applied rotation & transformation
  • allow transforms to be configurable (probably with presets defined in an .ini file)
  • drop the PyPDF dependency ✓
  • use an ImageMagick binding rather than using subprocess to call convert ✓ (Wand)
  • optionally re-use pages between runs ✓
  • allow user-specified resolution for the PDF to PNG conversion ✓
  • docs ✓
  • pretty pictures illustrating the effect of the various options
  • use proper logging

Project details


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