4a7e29865d
This moves, and slightly simplifies, code that's currently residing in the unit-test utils into the actual library, such that it's bundled with `GENERIC`-builds and used in e.g. the API-code. As an added bonus, this also brings out-of-the-box support for CMaps in e.g. the Node.js examples.
110 lines
3.0 KiB
JavaScript
110 lines
3.0 KiB
JavaScript
/* Copyright 2017 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { buildGetDocumentParams } from "./test_utils.js";
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import { DOMCanvasFactory } from "../../src/display/display_utils.js";
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import { getDocument } from "../../src/display/api.js";
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import { isNodeJS } from "../../src/shared/is_node.js";
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import { NodeCanvasFactory } from "../../src/display/node_utils.js";
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function getTopLeftPixel(canvasContext) {
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const imgData = canvasContext.getImageData(0, 0, 1, 1);
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return {
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r: imgData.data[0],
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g: imgData.data[1],
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b: imgData.data[2],
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a: imgData.data[3],
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};
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}
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describe("custom canvas rendering", function () {
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const transparentGetDocumentParams = buildGetDocumentParams(
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"transparent.pdf"
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);
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let CanvasFactory;
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let loadingTask;
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let page;
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beforeAll(function (done) {
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if (isNodeJS) {
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CanvasFactory = new NodeCanvasFactory();
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} else {
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CanvasFactory = new DOMCanvasFactory();
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}
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loadingTask = getDocument(transparentGetDocumentParams);
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loadingTask.promise
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.then(function (doc) {
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return doc.getPage(1);
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})
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.then(function (data) {
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page = data;
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done();
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})
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.catch(done.fail);
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});
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afterAll(function (done) {
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CanvasFactory = null;
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page = null;
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loadingTask.destroy().then(done);
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});
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it("renders to canvas with a default white background", function (done) {
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var viewport = page.getViewport({ scale: 1 });
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var canvasAndCtx = CanvasFactory.create(viewport.width, viewport.height);
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const renderTask = page.render({
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canvasContext: canvasAndCtx.context,
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viewport,
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});
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renderTask.promise
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.then(function () {
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expect(getTopLeftPixel(canvasAndCtx.context)).toEqual({
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r: 255,
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g: 255,
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b: 255,
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a: 255,
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});
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CanvasFactory.destroy(canvasAndCtx);
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done();
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})
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.catch(done.fail);
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});
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it("renders to canvas with a custom background", function (done) {
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var viewport = page.getViewport({ scale: 1 });
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var canvasAndCtx = CanvasFactory.create(viewport.width, viewport.height);
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const renderTask = page.render({
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canvasContext: canvasAndCtx.context,
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viewport,
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background: "rgba(255,0,0,1.0)",
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});
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renderTask.promise
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.then(function () {
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expect(getTopLeftPixel(canvasAndCtx.context)).toEqual({
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r: 255,
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g: 0,
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b: 0,
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a: 255,
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});
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CanvasFactory.destroy(canvasAndCtx);
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done();
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})
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.catch(done.fail);
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});
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});
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