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#756 Adding alt text feature

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This commit is contained in:
Dolan
2022-10-26 23:09:36 +01:00
parent ccf66dbd50
commit 522b21862b
13 changed files with 359 additions and 45 deletions
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19
src/file/paragraph/run/image-run.ts
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@ -1,6 +1,7 @@
import { uniqueId } from "@util/convenience-functions";
import { IContext, IXmlableObject } from "@file/xml-components";
import { DocPropertiesOptions } from "@file/drawing/doc-properties/doc-properties";
import { Drawing, IFloating } from "../../drawing";
import { IMediaTransformation } from "../../media";
@ -11,6 +12,7 @@ export interface IImageOptions {
readonly data: Buffer | string | Uint8Array | ArrayBuffer;
readonly transformation: IMediaTransformation;
readonly floating?: IFloating;
readonly altText?: DocPropertiesOptions;
}
export class ImageRun extends Run {
@ -37,7 +39,7 @@ export class ImageRun extends Run {
rotation: options.transformation.rotation ? options.transformation.rotation * 60000 : undefined,
},
};
const drawing = new Drawing(this.imageData, { floating: options.floating });
const drawing = new Drawing(this.imageData, { floating: options.floating, docProperties: options.altText });
this.root.push(drawing);
}
@ -49,15 +51,16 @@ export class ImageRun extends Run {
}
private convertDataURIToBinary(dataURI: string): Uint8Array {
// https://gist.github.com/borismus/1032746
// https://github.com/mafintosh/base64-to-uint8array
const BASE64_MARKER = ";base64,";
const base64Index = dataURI.indexOf(BASE64_MARKER) + BASE64_MARKER.length;
if (typeof atob === "function") {
// https://gist.github.com/borismus/1032746
// https://github.com/mafintosh/base64-to-uint8array
const BASE64_MARKER = ";base64,";
const base64Index = dataURI.indexOf(BASE64_MARKER);
const base64IndexWithOffset = base64Index === -1 ? 0 : base64Index + BASE64_MARKER.length;
return new Uint8Array(
atob(dataURI.substring(base64Index))
atob(dataURI.substring(base64IndexWithOffset))
.split("")
.map((c) => c.charCodeAt(0)),
);