pdf.js/test/unit/text_layer_spec.js
Calixte Denizet eed9bf71c5 Refactor the text layer code in order to avoid to recompute it on each draw
The idea is just to resuse what we got on the first draw.
Now, we only update the scaleX of the different spans and the other values
are dependant of --scale-factor.
Move some properties in the CSS in order to avoid any updates in JS.
2022-12-01 18:42:43 +01:00

63 lines
1.9 KiB
JavaScript

/* Copyright 2022 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.
*/
import {
renderTextLayer,
TextLayerRenderTask,
} from "../../src/display/text_layer.js";
import { buildGetDocumentParams } from "./test_utils.js";
import { getDocument } from "../../src/display/api.js";
import { isNodeJS } from "../../src/shared/is_node.js";
describe("textLayer", function () {
it("creates textLayer from ReadableStream", async function () {
if (isNodeJS) {
pending("document.createElement is not supported in Node.js.");
}
const loadingTask = getDocument(buildGetDocumentParams("basicapi.pdf"));
const pdfDocument = await loadingTask.promise;
const page = await pdfDocument.getPage(1);
const textContentItemsStr = [];
const textLayerRenderTask = renderTextLayer({
textContentStream: page.streamTextContent(),
container: document.createElement("div"),
viewport: page.getViewport(),
textContentItemsStr,
});
expect(textLayerRenderTask instanceof TextLayerRenderTask).toEqual(true);
await textLayerRenderTask.promise;
expect(textContentItemsStr).toEqual([
"Table Of Content",
"",
"Chapter 1",
" ",
"..........................................................",
" ",
"2",
"",
"Paragraph 1.1",
" ",
"......................................................",
" ",
"3",
"",
"page 1 / 3",
]);
});
});