Setting up Doka Image Editor with React

For a quick start use the React example project included in the product package as a guideline. It includes a normal, modal, and overlay editor example as well as an integration of react-filepond and Doka Image Editor.

We can install doka and react-doka with npm by copying both of the dependencies to the 'local_modules' folder in the root of our React project and running the following command to install them locally.

npm install --save ./local_modules/react-doka ./local_modules/doka

Now we can import the modules like we normally would and use the React <DokaImageEditor>, <DokaImageEditorModal>, and <DokaImageEditorOverlay> components.

Default implementation example

In the default example below we'll use the getEditorDefaults method to quickly create an image editor.

This creates a "default" editor that has all available plugins loaded and comes preset with all plugin default options and English locale. Each of these settings can be adjusted freely.

// Import the editor styles
import 'doka/doka.css';

// Import the editor default configuration
import { getEditorDefaults } from 'doka';

// Import the editor component from `react-doka`
import { DokaImageEditor } from 'react-doka';

function App() {
    // get default properties
    const editorConfig = getEditorDefaults();

    return (
        <div className="App">
            <DokaImageEditor
                {...editorConfig}
                src="./my-image.jpeg"
                imageCropAspectRatio={1}
            ></DokaImageEditor>
        </div>
    );
}

export default App;

Events and properties

To handle events we can use camelcase props. This means that to listen for the Doka Image Editor load event we have to set the onLoad prop.

<DokaImageEditor onLoad={handleEvent} />

Properties can be used as we would with the normal JavaScript version of the editor.

<DokaImageEditor src="./my-image.jpeg" />

Methods

To run editor methods we need to get a ref to the editor component. We can do so using the useRef hook. When the reference is set up we can access the editor instance.

export default function Example() {
    // get a reference to the DokaImageEditor component
    const componentRef = useRef(null);

    const handleUndo = () => {
        // get reference to editor instance
        const { editor } = componentRef.current;

        // run history.undo()
        editor.history.undo();
    };

    return (
        <div className="App">
            <button onClick={handleUndo}>Undo</button>

            <DokaImageEditor ref={componentRef} src={'./image.jpeg'} />
        </div>
    );
}

Advanced implementation example

In this example we'll create a custom editor, using a custom set of plugins, locale, and available options.

While this example is a lot more verbose it does allow us to create a more optimal editor package. The build process will tree-shake unused functionality resulting in a smaller build target.

// Import the editor styles
import 'doka/doka.css';

// Import the editor functionality
import {
    // Import the default image reader and writer
    createDefaultImageReader,
    createDefaultImageWriter,

    // The method used to register the plugins
    setPlugins,

    // The plugins we want to use
    plugin_crop,
    plugin_finetune,
    plugin_annotate,

    // The user interface and plugin locale objects
    locale_en_gb,
    plugin_crop_locale_en_gb,
    plugin_finetune_locale_en_gb,
    plugin_annotate_locale_en_gb,

    // Because we use the annotate plugin we also need
    // to import the markup editor locale
    markup_editor_locale_en_gb,

    // Import the default configuration for the markup editor and finetune plugins
    markup_editor_defaults,
    plugin_finetune_defaults,
} from 'doka';

// Import the editor component from `react-doka`
import { DokaImageEditor } from 'react-doka';

// This registers the plugins with Doka Image Editor
setPlugins(plugin_crop, plugin_finetune, plugin_filter);

// Create our editor configuration
const editorConfig = {
    // This will read the image data (required)
    imageReader: createDefaultImageReader(),

    // This will write the output image
    imageWriter: createDefaultImageWriter(),

    // The markup editor default options, tools, shape style controls
    ...markup_editor_defaults,

    // The finetune util controls
    ...plugin_finetune_defaults,

    // This will set a square crop aspect ratio
    imageCropAspectRatio: 1,

    // The icons and labels to use in the user interface (required)
    locale: {
        ...locale_en_gb,
        ...plugin_crop_locale_en_gb,
        ...plugin_finetune_locale_en_gb,
        ...plugin_annotate_locale_en_gb,
        ...markup_editor_locale_en_gb,
    },
};

function App() {
    return (
        <div className="App">
            <DokaImageEditor
                {...editorConfig}
                src="./my-image.jpeg"
                imageCropAspectRatio={1}
            ></DokaImageEditor>
        </div>
    );
}

export default App;

Next steps

With the editor set up, we can continue to configure the editor to our liking by adjusting the available configuration options