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pintura.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Pintura Editor</title>
<!-- Pintura editor core styles -->
<style>
/*__PINTURA_CSS__*/
/*__PINTURA_VIDEO_CSS__*/
</style>
<!-- Styles for the base page -->
<style>
html {
font-family: sans-serif;
font-size: 16px;
}
html,
body {
padding: 0;
margin: 0;
height: 100%;
}
#app {
width: 100%;
height: 100%;
}
</style>
<!-- This will contain custom editor styles set through `styleRules` property on proxy component -->
<style id="editor-styles"></style>
</head>
<body>
<div id="app"></div>
<script>
// This replaces undefined values in outgoing messages so they're not lost
const stringifyMessage = (obj) =>
JSON.stringify(obj, (k, v) => (v === undefined ? '__UNDEFINED__' : v));
// This deep replaces object values with a replacer function
const deepReplaceValues = (obj, replacer) => {
let out = Array.isArray(obj) ? [...obj] : { ...obj };
Object.entries(out).forEach(([key, value]) => {
if (Array.isArray(value) || typeof value === 'object') {
out[key] = deepReplaceValues(value, replacer);
} else {
out[key] = replacer(key, value);
}
});
return out;
};
// this restores undefined and function values
const replaceValues = (key, value) => {
// only replacing special strings, ignore reset
if (typeof value !== 'string') return value;
// should be set to undefined
if (value === '__UNDEFINED__') return undefined;
// is a function __FUNCTION__foo,bar,baz____body
if (value.startsWith('__FUNCTION__')) {
const parts = value.substring(12).split('____');
return new Function(parts[0], parts[1]);
}
return value;
};
const parseMessage = (str) => deepReplaceValues(JSON.parse(str), replaceValues);
// This enables using console.log for debugging
console.log = (...args) => {
if (!('ReactNativeWebView' in window)) return;
window.ReactNativeWebView.postMessage(
stringifyMessage({ type: 'log', detail: args })
);
};
// Converts a Blob to a dataURL, with React Native we cannot send Blobs through window.postMessage
const toDateURI = (file) =>
new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onload = () => resolve(reader.result);
reader.onerror = reject;
reader.readAsDataURL(file);
});
// Converts an event object entry to a property (basically encodes any Blob values)
const toMessageProp = ([key, value]) =>
new Promise((resolve) => {
// is a blob
if (value instanceof Blob) {
toDateURI(value).then((str) => resolve([key, str]));
return;
}
// not a blob
resolve([key, value]);
});
// All editor events are routed here so we can send them to the React Native layer
const handleEditorEvent = (type, detail) => {
// filter out data uri's from events so messages are faster
if (type === 'load') {
// remove original image source
delete detail.src;
// remove resulting file object as used by editor
delete detail.dest;
} else if (type === 'loadpreview') {
// remove preview data
detail = {};
} else if (type === 'process') {
// remove source image
delete detail.src;
}
// is plain string
if (typeof detail === 'string' || typeof detail === 'number') {
window.ReactNativeWebView.postMessage(stringifyMessage({ type, detail }));
return;
}
// create message for arrays and object
Promise.all(Object.entries(detail || {}).map(toMessageProp)).then((entries) => {
const detail = entries.reduce((prev, [key, value]) => {
prev[key] = value;
return prev;
}, {});
let message;
try {
message = stringifyMessage({ type, detail });
} catch (err) {
alert(err);
return;
}
window.ReactNativeWebView.postMessage(message);
});
};
// Go!
const initEditorProxy = () => {
// Default editor
const {
setPlugins,
appendDefaultEditor,
createDefaultImageReader,
createDefaultImageWriter,
createDefaultMediaWriter,
createMarkupEditorShapeStyleControls,
imageStateToCanvas,
} = pintura;
/*__PINTURA_VIDEO_INIT__*/
// Set properties that can't be set from the native layer in the object below
const editorCustomOptions = {
//
// Your properties here
//
};
// Create the editor
const editor = appendDefaultEditor(window.app, {
// merge custom options
...editorCustomOptions,
/*__PINTURA_VIDEO_OPTIONS__*/
// Route editor events to the React Native layer
handleEvent: handleEditorEvent,
});
// Allow comms with editor from React Native layer
const handleMessage = (event) => {
// parse options
let msg;
try {
msg = parseMessage(event.data);
} catch (err) {
alert(err);
return;
}
// is a `style` object, let's update the styles
if (msg.editorStyleRules) {
const styles = document.getElementById('editor-styles');
styles.textContent = msg.editorStyleRules;
}
// is an `options` object? lets assign to editor
if (msg.editorOptions) {
if (msg.editorOptions.markupEditorShapeStyleControls) {
try {
const controls = createMarkupEditorShapeStyleControls(
msg.editorOptions.markupEditorShapeStyleControls
);
msg.editorOptions.markupEditorShapeStyleControls = controls;
} catch (err) {
console.log(err.message);
}
}
if (msg.editorOptions.imageReader) {
msg.editorOptions.imageReader = createDefaultImageReader(
msg.editorOptions.imageReader
);
}
if (msg.editorOptions.imageWriter) {
msg.editorOptions.imageWriter = createDefaultImageWriter(
msg.editorOptions.imageWriter
);
}
/*__PINTURA_VIDEO_WRITER__*/
return Object.assign(editor, msg.editorOptions);
}
// is a function perhaps, lets run it
if (msg.editorFunction) {
const [name, ...args] = msg.editorFunction;
const method = name.split('.').reduce((prev, curr) => {
return prev[curr];
}, editor);
if (!method) return;
method(...args);
}
};
// for Android
document.addEventListener('message', handleMessage);
// for iOS
window.addEventListener('message', handleMessage);
// now ready to receive messages
window.ReactNativeWebView.postMessage(
stringifyMessage({
type: 'webviewloaded',
})
);
};
// Wait for page to load, then set up proxy
document.addEventListener('DOMContentLoaded', initEditorProxy);
</script>
<script>
/*__PINTURA_JS__*/
/*__PINTURA_VIDEO_JS__*/
/*__VIDEO_MUXER_JS__*/
</script>
</body>
</html>