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<div align="center">
  <h1>ohif-viewer</h1>
  <p><strong>ohif-viewer</strong> is a zero-footprint medical image viewer. It is a configurable and exstensible progressive web application with out of the box support for PACS like orthanc, dcm4che, and Google's Healthcare API.</p>
</div>


<div align="center">
  <a href="https://deploy-preview-398--ohif.netlify.com/"><strong>Read The Docs</strong></a> |
  <a href="https://github.com/OHIF/Viewers/tree/react/docs/latest">Edit the docs</a>
</div>


<hr />

[![CircleCI][circleci-image]][circleci-url]
[![codecov][codecov-image]][codecov-url]
[![All Contributors][all-contributors-image]][contributing-url]
[![code style: prettier][prettier-image]][prettier-url]
[![semantic-release][semantic-image]][semantic-url]

[![NPM version][npm-version-image]][npm-url]
[![NPM downloads][npm-downloads-image]][npm-url]
[![MIT License][license-image]][license-url]
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## Why?

Building a web based medical imaging viewer from scratch is time intensive, hard
to get right, and expensive. Instead of re-inventing the wheel, you can use the
OHIF Viewer as a rock solid platform to build on top of. The Viewer is a
[React][react-url] [Progressive Web Application][pwa-url] that can be embedded
in existing applications via it's [packaged source
(ohif-viewer)][ohif-viewer-url] or hosted stand-alone. The Viewer exposes
[configuration][configuration-url] and [extensions][extensions-url] to support
workflow customization and advanced functionality at common integration points.

If you're interested in using the OHIF Viewer, but you're not sure it supports
your use case
[check out our docs](https://deploy-preview-398--ohif.netlify.com/). Still not
sure, or you would like to propose new features? Don't hesitate to
[create an issue](https://github.com/OHIF/Viewers/issues) or open a pull request
^\_^

## Getting Started

This readme is specific to testing and developing locally. If you're more
interested in production deployment strategies,
[you can check out our documentation on publishing](https://deploy-preview-398--ohif.netlify.com/).

Want to play around before you dig in?
[Check out our LIVE Demo](https://viewer.ohif.org/)

### Setup

_Requirements:_

- [NodeJS & NPM](https://nodejs.org/en/download/)
- [Yarn](https://yarnpkg.com/lang/en/docs/install/)

_Steps:_

1. Fork this repository
2. Clone your forked repository (your `origin`)

- `git clone git@github.com:YOUR_GITHUB_USERNAME/Viewers.git`

3. Add `OHIF/Viewers` as a `remote` repository (the `upstream`)

- `git remote add upstream git@github.com:OHIF/Viewers.git`

### Developing Locally

In your cloned repository's root folder, run:

```js
// Restore dependencies
yarn install

// Stands up local server to host Viewer.
// Viewer connects to our public cloud PACS by default
yarn start
```

For more advanced local development scenarios, like using your own locally
hosted PACS and test data,
[check out our Essential: Getting Started](https://deploy-preview-398--ohif.netlify.com/essentials/getting-started.html)
guide.

### Contributing

> Large portions of the Viewer's functionality are maintained in other
> repositories. To get a better understanding of the Viewer's architecture and
> "where things live", read
> [our docs on the Viewer's architecture](https://deploy-preview-398--ohif.netlify.com/advanced/architecture.html#diagram)

It is notoriously difficult to setup multiple dependent repositories for
end-to-end testing and development. That's why we recommend writing and running
unit tests when adding and modifying features. This allows us to program in
isolation without a complex setup, and has the added benefit of producing
well-tested business logic.

1. Clone this repository
2. Navigate to the project directory, and `yarn install`
3. To begin making changes, `yarn run dev`
4. To commit changes, run `yarn run cm`

When creating tests, place the test file "next to" the file you're testing.
[For example](https://github.com/OHIF/Viewers/blob/react/src/index.test.js):

```js
// File
index.js

// Test for file
index.test.js
```

As you add and modify code, `jest` will watch for uncommitted changes and run
your tests, reporting the results to your terminal. Make a pull request with
your changes to `master`, and a core team member will review your work. If you
have any questions, please don't hesitate to reach out via a GitHub issue.

## Issues

_Looking to contribute? Look for the [Good First Issue][good-first-issue]
label._

### 🐛 Bugs

Please file an issue for bugs, missing documentation, or unexpected behavior.

[**See Bugs**][bugs]

### 💡 Feature Requests

Please file an issue to suggest new features. Vote on feature requests by adding
a 👍. This helps maintainers prioritize what to work on.

[**See Feature Requests**][requests-feature]

### ❓ Questions

For questions related to using the library, please visit our support community,
or file an issue on GitHub.

[Google Group][google-group]

## License

MIT © [OHIF](https://github.com/OHIF)

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[all-contributors-image]: https://img.shields.io/badge/all_contributors-0-orange.svg?style=flat-square
[contributing-url]: https://github.com/OHIF/Viewers/blob/react/CONTRIBUTING.md
[circleci-image]: https://circleci.com/gh/OHIF/Viewers.svg?style=svg
[circleci-url]: https://circleci.com/gh/OHIF/Viewers
[codecov-image]: https://codecov.io/gh/OHIF/Viewers/branch/react/graph/badge.svg
[codecov-url]: https://codecov.io/gh/OHIF/Viewers/branch/react
[prettier-image]: https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square
[prettier-url]: https://github.com/prettier/prettier
[semantic-image]: https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg
[semantic-url]: https://github.com/semantic-release/semantic-release
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[npm-url]: https://npmjs.org/package/ohif-viewer
[npm-downloads-image]: https://img.shields.io/npm/dm/ohif-viewer.svg?style=flat-square
[npm-version-image]: https://img.shields.io/npm/v/ohif-viewer.svg?style=flat-square
[license-image]: https://img.shields.io/badge/license-MIT-blue.svg?style=flat-square
[license-url]: LICENSE
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[react-url]: https://reactjs.org/
[pwa-url]: https://developers.google.com/web/progressive-web-apps/
[ohif-viewer-url]: https://www.npmjs.com/package/ohif-viewer
[configuration-url]: https://deploy-preview-398--ohif.netlify.com/essentials/configuration.html
[extensions-url]: https://deploy-preview-398--ohif.netlify.com/advanced/extensions.html
<!-- Misc. -->
[react-viewer]: https://github.com/OHIF/Viewers/tree/react
<!-- Issue Boilerplate -->
[bugs]: https://github.com/OHIF/Viewers/labels/bug
[requests-feature]: https://github.com/OHIF/Viewers/labels/enhancement
[good-first-issue]: https://github.com/OHIF/Viewers/labels/good%20first%20issue
[google-group]: https://groups.google.com/forum/#!forum/cornerstone-platform
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