scratch-render/test/helper/page-util.js
2024-12-20 10:29:22 -08:00

54 lines
1.6 KiB
JavaScript

/* global VirtualMachine, ScratchStorage, ScratchSVGRenderer */
/* eslint-env browser */
// Wait for all SVG skins to be loaded.
// TODO: this is extremely janky and should be removed once vm.loadProject waits for SVG skins to load
// https://github.com/LLK/scratch-render/issues/563
window.waitForSVGSkinLoad = renderer => new Promise(resolve => {
// eslint-disable-next-line prefer-const
let interval;
const waitInner = () => {
let numSVGSkins = 0;
let numLoadedSVGSkins = 0;
for (const skin of renderer._allSkins) {
if (skin.constructor.name !== 'SVGSkin') continue;
numSVGSkins++;
if (skin._svgImage.complete) numLoadedSVGSkins++;
}
if (numSVGSkins === numLoadedSVGSkins) {
clearInterval(interval);
resolve();
}
};
interval = setInterval(waitInner, 1);
});
window.loadFileInputIntoVM = (fileInput, vm, render) => {
const reader = new FileReader();
return new Promise(resolve => {
reader.onload = () => {
vm.start();
vm.loadProject(reader.result)
.then(() => window.waitForSVGSkinLoad(render))
.then(() => {
resolve();
});
};
reader.readAsArrayBuffer(fileInput.files[0]);
});
};
window.initVM = render => {
const vm = new VirtualMachine();
const storage = new ScratchStorage.ScratchStorage();
vm.attachStorage(storage);
vm.attachRenderer(render);
vm.attachV2SVGAdapter(ScratchSVGRenderer.V2SVGAdapter);
vm.attachV2BitmapAdapter(new ScratchSVGRenderer.BitmapAdapter());
return vm;
};