discourse/app/assets/javascripts/wizard/components/image-preview-apple-touch-icon-url.js.es6

import { observes } from 'ember-addons/ember-computed-decorators';
import { createPreviewComponent } from 'wizard/lib/preview';

export default createPreviewComponent(325, 125, {
  ios: null,
  image: null,

  @observes('field.value')
  imageChanged() {
    this.reload();
  },

  images() {
    return { ios: '/images/wizard/apple-mask.png', image: this.get('field.value') };
  },

  paint(ctx, colors, width, height) {
    ctx.drawImage(this.image, 10, 8, 87, 87);
    ctx.drawImage(this.ios, 0, 0, width, height);
  }
});