a24ad28d75
It was pointed out the the old name felt confusing, so let's just rename the getter since it's an internal property anyway.
73 lines
2.1 KiB
JavaScript
73 lines
2.1 KiB
JavaScript
/* Copyright 2014 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 { BaseViewer } from "./base_viewer.js";
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import { shadow } from "pdfjs-lib";
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class PDFViewer extends BaseViewer {
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get _viewerElement() {
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return shadow(this, "_viewerElement", this.viewer);
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}
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_scrollIntoView({ pageDiv, pageSpot = null, pageNumber = null }) {
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if (!pageSpot && !this.isInPresentationMode) {
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const left = pageDiv.offsetLeft + pageDiv.clientLeft;
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const right = left + pageDiv.clientWidth;
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const { scrollLeft, clientWidth } = this.container;
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if (
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this._isScrollModeHorizontal ||
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left < scrollLeft ||
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right > scrollLeft + clientWidth
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) {
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pageSpot = { left: 0, top: 0 };
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}
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}
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super._scrollIntoView({ pageDiv, pageSpot, pageNumber });
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}
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_getVisiblePages() {
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if (this.isInPresentationMode) {
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// The algorithm in `getVisibleElements` doesn't work in all browsers and
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// configurations (e.g. Chrome) when Presentation Mode is active.
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return this._getCurrentVisiblePage();
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}
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return super._getVisiblePages();
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}
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_updateHelper(visiblePages) {
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if (this.isInPresentationMode) {
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return;
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}
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let currentId = this._currentPageNumber;
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let stillFullyVisible = false;
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for (const page of visiblePages) {
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if (page.percent < 100) {
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break;
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}
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if (page.id === currentId) {
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stillFullyVisible = true;
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break;
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}
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}
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if (!stillFullyVisible) {
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currentId = visiblePages[0].id;
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}
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this._setCurrentPageNumber(currentId);
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}
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}
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export { PDFViewer };
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