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web: Add device_fonts_rendering integration test
This test check whether device font glyphs are rendered inside proper bounds.
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‎web/packages/selfhosted/test/integration_tests/device_fonts_rendering/Test.as‎

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package {
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import flash.display.*;
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import flash.text.*;
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[SWF(width="100", height="100", backgroundColor="#FF00FF")]
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public class Test extends MovieClip {
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public function Test() {
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var text:TextField = createTextField();
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addChild(text);
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trace("Loaded test!");
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trace("Character bounds:");
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trace(text.getCharBoundaries(0).x + text.x);
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trace(text.getCharBoundaries(0).width);
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trace(text.getCharBoundaries(0).y + text.y);
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trace(text.getCharBoundaries(0).height);
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}
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private function createTextField():TextField {
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var text:TextField = new TextField();
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text.text = "M";
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text.x = 20;
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text.y = 20;
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text.width = 80;
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text.height = 80;
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return text;
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}
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}
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}

‎web/packages/selfhosted/test/integration_tests/device_fonts_rendering/index.html‎

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<!doctype html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<script>
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const urlParams = new URLSearchParams(window.location.search);
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window.RufflePlayer = window.RufflePlayer || {};
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window.RufflePlayer.config = {
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"deviceFontRenderer": urlParams.get('deviceFontRenderer'),
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};
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</script>
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</head>
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<body>
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<div>
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<object type="application/x-shockwave-flash" data="test.swf" width="100" height="100" id="objectElement"></object>
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</div>
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</body>
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</html>

‎web/packages/selfhosted/test/integration_tests/device_fonts_rendering/test.swf‎

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‎web/packages/selfhosted/test/integration_tests/device_fonts_rendering/test.ts‎

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import {
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assertNoMoreTraceOutput,
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expectTraceOutput,
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getTraceOutput,
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hideHardwareAccelerationModal,
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injectRuffleAndWait,
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openTest,
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playAndMonitor,
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} from "../../utils.js";
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import { expect, use } from "chai";
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import chaiHtml from "chai-html";
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use(chaiHtml);
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const deviceFontRenderers = ["embedded", "canvas"];
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describe("Device Fonts: Rendering", () => {
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for (const deviceFontRenderer of deviceFontRenderers) {
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it(`load the test: ${deviceFontRenderer}`, async () => {
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await openTest(
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browser,
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"integration_tests/device_fonts_rendering",
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`index.html?deviceFontRenderer=${deviceFontRenderer}`,
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);
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await injectRuffleAndWait(browser);
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const player = await browser.$("<ruffle-object>");
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await playAndMonitor(browser, player, ["Loaded test!"]);
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await hideHardwareAccelerationModal(browser, player);
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});
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it("check rendered image", async () => {
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const player = await browser.$("#objectElement");
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await expectTraceOutput(browser, player, ["Character bounds:"]);
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const messages = await getTraceOutput(browser, player, 4);
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const boundsX = Number(messages[0]);
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const boundsWidth = Number(messages[1]);
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const boundsY = Number(messages[2]);
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const boundsHeight = Number(messages[3]);
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expect(boundsX).to.be.greaterThan(0);
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expect(boundsWidth).to.be.greaterThan(0);
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expect(boundsY).to.greaterThan(0);
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expect(boundsHeight).to.be.greaterThan(0);
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const canvas = await player.shadow$("canvas");
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const [canvasWidth, canvasHeight, pixels] = await browser.execute(
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(el) => {
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const canvas = el as HTMLCanvasElement;
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const ctx =
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canvas.getContext("webgl") ||
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canvas.getContext("webgl2");
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const pixels = new Uint8Array(
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canvas.width * canvas.height * 4,
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);
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ctx?.readPixels(
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0,
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0,
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canvas.width,
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canvas.height,
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ctx.RGBA,
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ctx.UNSIGNED_BYTE,
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pixels,
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);
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return [canvas.width, canvas.height, [...pixels]];
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},
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canvas,
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);
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let insideBoundsBg = 0;
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let insideBoundsNonBg = 0;
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for (let i = 0; i < pixels.length; i += 4) {
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const pixelIndex = i / 4;
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const pixel = pixels.slice(i, i + 4);
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const x = pixelIndex % canvasWidth;
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const y = Math.floor(pixelIndex / canvasWidth);
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const scaledX = (x * 100) / canvasWidth;
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const scaledY = (y * 100) / canvasHeight;
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const insideBounds =
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boundsX <= scaledX &&
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scaledX <= boundsX + boundsWidth &&
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boundsY <= scaledY &&
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scaledY <= boundsY + boundsHeight;
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if (insideBounds) {
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// All pixels should be shades of magenta.
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expect(pixel[1]).to.be.equal(0);
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expect(pixel[0]).to.be.equal(pixel[2]);
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expect(pixel[3]).to.be.equal(255);
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// Background is magenta.
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const isBackground =
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pixel.toString() === [255, 0, 255, 255].toString();
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if (isBackground) {
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insideBoundsBg += 1;
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} else {
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insideBoundsNonBg += 1;
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}
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} else {
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// Pixels outside of bounds should be background only.
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expect(pixel.toString()).to.be.equal(
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[255, 0, 255, 255].toString(),
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);
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}
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}
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// Make sure there are both background and black pixels inside bounds.
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expect(insideBoundsBg).is.greaterThan(0);
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expect(insideBoundsNonBg).is.greaterThan(0);
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});
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it("no more traces", async function () {
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const player = await browser.$("#objectElement");
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assertNoMoreTraceOutput(browser, player);
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});
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}
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});

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