Malakh - deep zoom viewer

Research and development project requested by the National Library of Poland made by Laboratorium EE.

How to run a viewer on your own image?

Generating DZI files

First, prepare the environment:

1. Get Python 2.7.
2. Install the libjpeg development package with a system package manager, e.g. on OS X: brew install libjpeg, on Ubuntu: sudo apt-get install libjpeg-dev.
3. Install the Pillow package: sudo pip install Pillow or sudo easy_install Pillow.

Now, run:

./utils/deepzoom.py PATH_TO_THE_IMAGE_FILE

Firing up the viewer

First, construct a new Malakh object:

var malakh = new Malakh(containerSelectorOrElement, [configOverrides]);

where the first argument points to a container element (or its selector) where Malakh will create its components. The container will be emptied.

For example:

var malakh = new Malakh('#malakh_container');

Then, open an image:

malakh.openDzi({
    imageDataUrl: PATH_TO_DZI,
});

Malakh will automatically deduce the tiles directory path from the above. If this path is non-canonical, you can provide it as an additional argument:

malakh.openDzi({
    imageDataUrl: PATH_TO_DZI,
    tilesUrl: PATH_TO_TILES_DIRECTORY,
});

How to build your own Malakh

First, clone a copy of the main Malakh git repo by running:

git clone https://github.com/Polona/malakh.git

Enter the malakh directory and install the Node dependencies:

cd malakh && npm install

The built version of Malakh will be put in the dist/ subdirectory, along with the minified copy and an associated map file.

Customizing own Malakh version

If you want to build your own, modified version, the above process may last too long. In that case, install the grunt-cli package, this time globally, to have the grunt binary available:

npm install -g grunt-cli

Make sure you have grunt installed by testing:

grunt --version

Then, to get a complete, minified, linted version of Malakh, type the following:

grunt

If you don't want to build minified files (e.g. during development), run:

grunt dev

Modules

Special builds can be created that optionally exclude or include any of the following modules:

• magnifier
• picker
• markers

Make sure all Node dependencies are installed and all Git submodules are checked out:

npm install && grunt

To create a custom build, use the following special grunt commands:

Exclude magnifier:

grunt custom:-magnifier

The same applies to other modules.

Exclude all optional modules:

grunt custom:-magnifier,-picker,-markers

Note: dependencies will be handled internally, by the build process.