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[blueimp-load-image] enhanced load image callback with metadata argument (#37848)

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* extended loadimagecallback with metadata argument.

* lint.

* extended unit test.

* cleanup test.

* polishing.
This commit is contained in:
KonstantinLukaschenko 2019-08-22 23:44:08 +02:00 committed by Sheetal Nandi
parent 982b76ff4a
commit a67c19be85
2 changed files with 24 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
types/blueimp-load-image/blueimp-load-image-tests.ts
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@ -1,7 +1,9 @@
import loadImage from 'blueimp-load-image';
import loadImage, { MetaData } from 'blueimp-load-image';
// Test image taken from package tests: https://github.com/blueimp/JavaScript-Load-Image/blob/master/test/test.js
// 2x1px JPEG (color white, with the Exif orientation flag set to 6 and the
// IPTC ObjectName (2:5) set to 'objectname'):
const b64DataJPEG =
'/9j/4AAQSkZJRgABAQEAYABgAAD/4QAiRXhpZgAASUkqAAgAAAABABIBAwABAAAA' +
'BgASAAAAAAD/7QAsUGhvdG9zaG9wIDMuMAA4QklNBAQAAAAAAA8cAgUACm9iamVj' +
@ -20,7 +22,9 @@ const b64DataJPEG =
'2uLj5OXm5+jp6vLz9PX29/j5+v/aAAwDAQACEQMRAD8A/v4ooooA/9k=';
const imageUrlJPEG = 'data:image/jpeg;base64,' + b64DataJPEG;
loadImage(imageUrlJPEG, (canvas: HTMLCanvasElement): void => {
loadImage(imageUrlJPEG, (image: HTMLCanvasElement | HTMLImageElement, data?: MetaData): void => {
const canvas = image as HTMLCanvasElement;
console.log(data);
canvas.toBlob((blob: Blob | null): void => {
const url = canvas.toDataURL("image/png");
console.log(url);

19
types/blueimp-load-image/index.d.ts vendored
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@ -1,11 +1,28 @@
// Type definitions for blueimp-load-image 2.23
// Project: https://github.com/blueimp/JavaScript-Load-Image
// Definitions by: Evan Kesten <https://github.com/ebk46>
// Konstantin Lukaschenko <https://github.com/KonstantinLukaschenko>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
/// <reference types="node" />
export type LoadImageCallback = (canvas: HTMLCanvasElement) => void;
export type LoadImageCallback = (image: HTMLCanvasElement | HTMLImageElement, data?: MetaData) => void;
export interface Exif {
[tag: number]: number | string | string[];
}
export interface Iptc {
[tag: number]: number | string | string[];
}
export interface MetaData {
originalWidth?: number;
originalHeight?: number;
imageHead?: ArrayBuffer | Uint8Array;
exif?: Exif;
iptc?: Iptc;
}
export interface BasicOptions {
maxWidth?: number; maxHeight?: number;