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OpenSeadragon
An open-source, web-based viewer for zoomable images, implemented in pure JavaScript.
See it in action and get started using it at http://openseadragon.github.io/.
Stable Builds
See the GitHub releases page.
Development
If you want to use OpenSeadragon in your own projects, you can find the latest stable build, API documentation, and example code at http://openseadragon.github.io/. If you want to modify OpenSeadragon and/or contribute to its development, read on.
First Time Setup
All command-line operations for building and testing OpenSeadragon are scripted using Grunt which is based on Node.js. To get set up:
- Install Node, if you haven't already (available at the link above)
- Install the Grunt command line runner (if you haven't already); on the command line, run
npm install -g grunt-cli - Clone the openseadragon repository
- On the command line, go in to the openseadragon folder
- Run
npm install
You're set... continue reading for build and test instructions.
Building from Source
To build, just run (on the command line, in the openseadragon folder):
grunt
If you want Grunt to watch your source files and rebuild every time you change one, use:
grunt watch
The built files appear in the build folder.
If you want to build tar and zip files for distribution (they will also appear in the build folder), use:
grunt package
Note that the build folder is masked with .gitignore; it's just for your local use, and won't be checked in to the repository.
You can also publish the built version to the site-build repository. This assumes you have cloned it next to this repository. The command is:
grunt publish
... which will delete the existing openseadragon folder, along with the .zip and .tar.gz files, out of the site-build folder and replace them with newly built ones from the source in this repository; you'll then need to commit the changes to site-build.
Testing
Our tests are based on QUnit and PhantomJS; they're both installed when you run npm install. At the moment we don't have much in the way of tests, but we're working to fix that. To run on the command line:
grunt test
If you wish to work interactively with the tests or test your changes:
grunt connect watch
and open http://localhost:8000/test/test.html in your browser.
Another good page, if you want to interactively test out your changes, is http://localhost:8000/test/demo/basic.html.
Contributing
OpenSeadragon is truly a community project; we welcome your involvement!
When contributing, please attempt to match the code style already in the codebase. Note that we use four spaces per indentation stop. For more thoughts on code style, see https://github.com/rwldrn/idiomatic.js/.
When fixing bugs and adding features, when appropriate please also:
- Update related doc comments (we use JSDoc 3)
- Add/update related unit tests
If you're new to the project, check out our good first bug issues for some places to dip your toe in the water.
If you're new to open source in general, check out GitHub's open source intro guide.
License
OpenSeadragon is released under the New BSD license. For details, see the file LICENSE.txt.
