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Merge pull request #16699 from Snuffleupagus/rm-svg

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[api-major] Remove the SVG back-end (PR 15173 follow-up)
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Jonas Jenwald 2023-10-03 15:13:14 +02:00 • committed by GitHub
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16 changed files with 1 additions and 2302 deletions
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1
test/unit/clitests.json
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@ -17,7 +17,6 @@
"crypto_spec.js",
"custom_spec.js",
"default_appearance_spec.js",
"display_svg_spec.js",
"display_utils_spec.js",
"document_spec.js",
"editor_spec.js",

163
test/unit/display_svg_spec.js
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@ -1,163 +0,0 @@
/* Copyright 2017 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* globals __non_webpack_require__ */
import { buildGetDocumentParams } from "./test_utils.js";
import { getDocument } from "../../src/display/api.js";
import { isNodeJS } from "../../src/shared/util.js";
import { SVGGraphics } from "../../src/display/svg.js";
const XLINK_NS = "http://www.w3.org/1999/xlink";
// withZlib(true, callback); = run test with require('zlib') if possible.
// withZlib(false, callback); = run test without require('zlib').deflateSync.
// The return value of callback is returned as-is.
function withZlib(isZlibRequired, callback) {
if (isZlibRequired) {
// We could try to polyfill zlib in the browser, e.g. using pako.
// For now, only support zlib functionality on Node.js
if (!isNodeJS) {
throw new Error("zlib test can only be run in Node.js");
}
return callback();
}
if (!isNodeJS) {
// Assume that require('zlib') is unavailable in non-Node.
return callback();
}
const zlib = __non_webpack_require__("zlib");
const deflateSync = zlib.deflateSync;
zlib.deflateSync = disabledDeflateSync;
function disabledDeflateSync() {
throw new Error("zlib.deflateSync is explicitly disabled for testing.");
}
function restoreDeflateSync() {
if (zlib.deflateSync === disabledDeflateSync) {
zlib.deflateSync = deflateSync;
}
}
const promise = callback();
promise.then(restoreDeflateSync, restoreDeflateSync);
return promise;
}
describe("SVGGraphics", function () {
let loadingTask;
let page;
beforeAll(async function () {
loadingTask = getDocument(
buildGetDocumentParams("xobject-image.pdf", {
isOffscreenCanvasSupported: false,
})
);
const doc = await loadingTask.promise;
page = await doc.getPage(1);
});
afterAll(async function () {
await loadingTask.destroy();
});
describe("paintImageXObject", function () {
function getSVGImage() {
let svgGfx;
return page
.getOperatorList()
.then(function (opList) {
const forceDataSchema = true;
svgGfx = new SVGGraphics(page.commonObjs, page.objs, forceDataSchema);
return svgGfx.loadDependencies(opList);
})
.then(function () {
let svgImg;
// A mock to steal the svg:image element from paintInlineImageXObject.
const elementContainer = {
append(...elements) {
svgImg = elements.at(-1);
},
};
// This points to the XObject image in xobject-image.pdf.
const xobjectObjId = "img_p0_1";
if (isNodeJS) {
const { setStubs } = __non_webpack_require__(
"../../examples/node/domstubs.js"
);
setStubs(global);
}
try {
const imgData = svgGfx.objs.get(xobjectObjId);
svgGfx.paintInlineImageXObject(imgData, elementContainer);
} finally {
if (isNodeJS) {
const { unsetStubs } = __non_webpack_require__(
"../../examples/node/domstubs.js"
);
unsetStubs(global);
}
}
return svgImg;
});
}
it('should fail require("zlib") unless in Node.js', function () {
function testFunc() {
__non_webpack_require__("zlib");
}
if (isNodeJS) {
// Verifies that the script loader replaces __non_webpack_require__ with
// require.
expect(testFunc.toString()).toMatch(/\srequire\(["']zlib["']\)/);
expect(testFunc).not.toThrow();
} else {
// require not defined, require('zlib') not a module, etc.
expect(testFunc).toThrow();
}
});
it("should produce a reasonably small svg:image", async function () {
if (!isNodeJS) {
pending("zlib.deflateSync is not supported in non-Node environments.");
}
const svgImg = await withZlib(true, getSVGImage);
expect(svgImg.nodeName).toBe("svg:image");
expect(svgImg.getAttributeNS(null, "width")).toBe("200px");
expect(svgImg.getAttributeNS(null, "height")).toBe("100px");
const imgUrl = svgImg.getAttributeNS(XLINK_NS, "href");
// forceDataSchema = true, so the generated URL should be a data:-URL.
expect(imgUrl).toMatch(/^data:image\/png;base64,/);
// Test whether the generated image has a reasonable file size.
// I obtained a data URL of size 366 with Node 8.1.3 and zlib 1.2.11.
// Without zlib (uncompressed), the size of the data URL was excessive
// (80246).
expect(imgUrl.length).toBeLessThan(367);
});
it("should be able to produce a svg:image without zlib", async function () {
const svgImg = await withZlib(false, getSVGImage);
expect(svgImg.nodeName).toBe("svg:image");
expect(svgImg.getAttributeNS(null, "width")).toBe("200px");
expect(svgImg.getAttributeNS(null, "height")).toBe("100px");
const imgUrl = svgImg.getAttributeNS(XLINK_NS, "href");
expect(imgUrl).toMatch(/^data:image\/png;base64,/);
// The size of our naively generated PNG file is excessive :(
expect(imgUrl.length).toBe(80246);
});
});
});

1
test/unit/jasmine-boot.js
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@ -58,7 +58,6 @@ async function initializePDFJS(callback) {
"pdfjs-test/unit/crypto_spec.js",
"pdfjs-test/unit/custom_spec.js",
"pdfjs-test/unit/default_appearance_spec.js",
"pdfjs-test/unit/display_svg_spec.js",
"pdfjs-test/unit/display_utils_spec.js",
"pdfjs-test/unit/document_spec.js",
"pdfjs-test/unit/editor_spec.js",

2
test/unit/pdf_spec.js
View file

@ -40,7 +40,6 @@ import {
getDocument,
PDFDataRangeTransport,
PDFWorker,
SVGGraphics,
version,
} from "../../src/display/api.js";
import {
@ -105,7 +104,6 @@ const expectedAPI = Object.freeze({
renderTextLayer,
setLayerDimensions,
shadow,
SVGGraphics,
UnexpectedResponseException,
updateTextLayer,
Util,

1
test/unit/unit_test.html
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@ -22,7 +22,6 @@
"display-network": "../../src/display/network.js",
"display-node_stream": "../../src/display/stubs.js",
"display-node_utils": "../../src/display/stubs.js",
"display-svg": "../../src/display/stubs.js",
"web-alt_text_manager": "../../web/alt_text_manager.js",
"web-annotation_editor_params": "../../web/annotation_editor_params.js",