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import JSZip from 'jszip';
import JSZipUtils from 'jszip-utils';
import SketchRender from './sketch_render';
export default class SketchLoader {
constructor(container) {
this.container = container;
this.loadingIcon = this.container.querySelector('.js-loading-icon');
this.sketchBrowserId = 'sketch-browser';
this.sketchBrowserPropsId = 'sketch-browser-props';
this.canvasId = 'sketch-canvas';
this.load();
}
load() {
return this.getZipFile()
.then(data => {
return JSZip.loadAsync(data)
})
.then(asyncResult => {
this.sketchRender = new SketchRender(this.sketchBrowserId, this.sketchBrowserPropsId, this.canvasId, asyncResult.files);
return asyncResult.files['previews/preview.png'].async('uint8array')
})
.then((content) => {
const url = window.URL || window.webkitURL;
const blob = new Blob([new Uint8Array(content)], {
type: 'image/png',
});
const previewUrl = url.createObjectURL(blob);
this.render(previewUrl);
})
.catch(this.error.bind(this));
}
getZipFile() {
return new JSZip.external.Promise((resolve, reject) => {
JSZipUtils.getBinaryContent(this.container.dataset.endpoint, (err, data) => {
if (err) {
reject(err);
} else {
resolve(data);
}
});
});
}
render(previewUrl) {
const previewLink = document.createElement('a');
const previewImage = document.createElement('img');
const sketchCanvas = document.createElement('canvas');
const sketchBrowser = document.createElement('aside');
const sketchBrowserProps = document.createElement('aside');
const sketchBrowserInner = `
<div class="sketch-panel">
<div class="heading">Pages</div>
<ul>
<li class="page" v-for="(page, i) in pages" :class="{active: currentPageIndex === i}">
<a href='#' @click.prevent="pageSelected(i)">{{page.name}}</a>
</li>
</ul>
<div class="heading">{{currentPage.name}}</div>
<ul>
<layer v-for="layer in currentPage.layers" @layerselected="layerSelected" :active-layer="activeLayer" :class="{active: activeLayer === layer.do_objectID}" :key="layer.do_objectID" :layer="layer"></layer>
</ul>
</div>
`;
const sketchBrowserPropsInner = `
<div class="sketch-panel">
<div class="heading">Properties</div>
<section class="prop-section">
<fieldset>
<legend>Position</legend>
<label>
<span>Y</span>
<input type="text" v-model="currentPos.y" class="form-control" readonly="readonly"/>
</label>
<label>
<span>X</span>
<input type="text" v-model="currentPos.x" class="form-control" readonly="readonly"/>
</label>
</fieldset>
<fieldset>
<legend>Size</legend>
<label>
<span>W</span>
<input type="text" v-model="currentPos.width" class="form-control" readonly="readonly"/>
</label>
<label>
<span>H</span>
<input type="text" v-model="currentPos.height" class="form-control" readonly="readonly"/>
</label>
</fieldset>
<fieldset v-if="backgroundColor">
<legend>BG Color</legend>
<label>
<span>Hex</span>
<code>{{backgroundColor.hex}}</code>
</label>
<div class="swatch" :title="backgroundColor.rgba" :style="{background: backgroundColor.rgba}"></div>
</fieldset>
</section>
</div>
`;
sketchCanvas.id = this.canvasId;
sketchBrowser.id = this.sketchBrowserId;
sketchBrowser.className = 'sketch-panel';
sketchBrowser.innerHTML = sketchBrowserInner;
sketchBrowserProps.id = this.sketchBrowserPropsId;
sketchBrowserProps.className = 'sketch-panel';
sketchBrowserProps.innerHTML = sketchBrowserPropsInner;
previewLink.href = previewUrl;
previewLink.target = '_blank';
previewImage.src = previewUrl;
previewLink.appendChild(previewImage);
this.container.appendChild(previewLink);
this.container.insertBefore(sketchBrowser, previewLink);
this.container.appendChild(sketchBrowserProps);
this.sketchRender.render();
this.removeLoadingIcon();
}
error() {
const errorMsg = document.createElement('p');
errorMsg.className = 'prepend-top-default append-bottom-default text-center';
errorMsg.textContent = `
Cannot show preview. For previews on sketch files, they must have the file format
introduced by Sketch version 43 and above.
`;
this.container.appendChild(errorMsg);
this.removeLoadingIcon();
}
removeLoadingIcon() {
if (this.loadingIcon) {
this.loadingIcon.remove();
}
}
}
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