922 lines
26 KiB
JavaScript
922 lines
26 KiB
JavaScript
/**
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* @licstart The following is the entire license notice for the
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* JavaScript code in this page
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*
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* Copyright 2022 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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* @licend The above is the entire license notice for the
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* JavaScript code in this page
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*/
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.PDFPageView = void 0;
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var _pdf = require("../pdf");
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var _ui_utils = require("./ui_utils.js");
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var _app_options = require("./app_options.js");
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var _l10n_utils = require("./l10n_utils.js");
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var _text_accessibility = require("./text_accessibility.js");
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const MAX_CANVAS_PIXELS = _app_options.compatibilityParams.maxCanvasPixels || 16777216;
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class PDFPageView {
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#annotationMode = _pdf.AnnotationMode.ENABLE_FORMS;
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#useThumbnailCanvas = {
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initialOptionalContent: true,
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regularAnnotations: true
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};
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constructor(options) {
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const container = options.container;
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const defaultViewport = options.defaultViewport;
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this.id = options.id;
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this.renderingId = "page" + this.id;
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this.pdfPage = null;
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this.pageLabel = null;
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this.rotation = 0;
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this.scale = options.scale || _ui_utils.DEFAULT_SCALE;
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this.viewport = defaultViewport;
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this.pdfPageRotate = defaultViewport.rotation;
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this._optionalContentConfigPromise = options.optionalContentConfigPromise || null;
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this.hasRestrictedScaling = false;
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this.textLayerMode = options.textLayerMode ?? _ui_utils.TextLayerMode.ENABLE;
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this.#annotationMode = options.annotationMode ?? _pdf.AnnotationMode.ENABLE_FORMS;
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this.imageResourcesPath = options.imageResourcesPath || "";
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this.useOnlyCssZoom = options.useOnlyCssZoom || false;
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this.maxCanvasPixels = options.maxCanvasPixels || MAX_CANVAS_PIXELS;
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this.pageColors = options.pageColors || null;
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this.eventBus = options.eventBus;
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this.renderingQueue = options.renderingQueue;
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this.textLayerFactory = options.textLayerFactory;
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this.annotationLayerFactory = options.annotationLayerFactory;
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this.annotationEditorLayerFactory = options.annotationEditorLayerFactory;
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this.xfaLayerFactory = options.xfaLayerFactory;
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this.textHighlighter = options.textHighlighterFactory?.createTextHighlighter({
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pageIndex: this.id - 1,
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eventBus: this.eventBus
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});
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this.structTreeLayerFactory = options.structTreeLayerFactory;
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this.renderer = options.renderer || _ui_utils.RendererType.CANVAS;
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this.l10n = options.l10n || _l10n_utils.NullL10n;
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this.paintTask = null;
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this.paintedViewportMap = new WeakMap();
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this.renderingState = _ui_utils.RenderingStates.INITIAL;
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this.resume = null;
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this._renderError = null;
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this._isStandalone = !this.renderingQueue?.hasViewer();
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this._annotationCanvasMap = null;
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this.annotationLayer = null;
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this.annotationEditorLayer = null;
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this.textLayer = null;
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this.zoomLayer = null;
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this.xfaLayer = null;
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this.structTreeLayer = null;
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const div = document.createElement("div");
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div.className = "page";
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div.style.width = Math.floor(this.viewport.width) + "px";
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div.style.height = Math.floor(this.viewport.height) + "px";
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div.setAttribute("data-page-number", this.id);
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div.setAttribute("role", "region");
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this.l10n.get("page_landmark", {
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page: this.id
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}).then(msg => {
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div.setAttribute("aria-label", msg);
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});
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this.div = div;
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container?.append(div);
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if (this._isStandalone) {
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const {
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optionalContentConfigPromise
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} = options;
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if (optionalContentConfigPromise) {
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optionalContentConfigPromise.then(optionalContentConfig => {
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if (optionalContentConfigPromise !== this._optionalContentConfigPromise) {
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return;
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}
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this.#useThumbnailCanvas.initialOptionalContent = optionalContentConfig.hasInitialVisibility;
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});
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}
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}
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}
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setPdfPage(pdfPage) {
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this.pdfPage = pdfPage;
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this.pdfPageRotate = pdfPage.rotate;
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const totalRotation = (this.rotation + this.pdfPageRotate) % 360;
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this.viewport = pdfPage.getViewport({
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scale: this.scale * _pdf.PixelsPerInch.PDF_TO_CSS_UNITS,
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rotation: totalRotation
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});
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this.reset();
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}
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destroy() {
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this.reset();
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if (this.pdfPage) {
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this.pdfPage.cleanup();
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}
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}
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async _renderAnnotationLayer() {
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let error = null;
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try {
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await this.annotationLayer.render(this.viewport, "display");
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} catch (ex) {
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console.error(`_renderAnnotationLayer: "${ex}".`);
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error = ex;
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} finally {
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this.eventBus.dispatch("annotationlayerrendered", {
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source: this,
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pageNumber: this.id,
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error
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});
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}
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}
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async _renderAnnotationEditorLayer() {
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let error = null;
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try {
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await this.annotationEditorLayer.render(this.viewport, "display");
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} catch (ex) {
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console.error(`_renderAnnotationEditorLayer: "${ex}".`);
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error = ex;
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} finally {
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this.eventBus.dispatch("annotationeditorlayerrendered", {
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source: this,
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pageNumber: this.id,
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error
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});
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}
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}
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async _renderXfaLayer() {
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let error = null;
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try {
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const result = await this.xfaLayer.render(this.viewport, "display");
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if (this.textHighlighter) {
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this._buildXfaTextContentItems(result.textDivs);
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}
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} catch (ex) {
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console.error(`_renderXfaLayer: "${ex}".`);
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error = ex;
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} finally {
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this.eventBus.dispatch("xfalayerrendered", {
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source: this,
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pageNumber: this.id,
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error
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});
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}
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}
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async _buildXfaTextContentItems(textDivs) {
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const text = await this.pdfPage.getTextContent();
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const items = [];
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for (const item of text.items) {
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items.push(item.str);
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}
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this.textHighlighter.setTextMapping(textDivs, items);
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this.textHighlighter.enable();
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}
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_resetZoomLayer(removeFromDOM = false) {
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if (!this.zoomLayer) {
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return;
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}
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const zoomLayerCanvas = this.zoomLayer.firstChild;
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this.paintedViewportMap.delete(zoomLayerCanvas);
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zoomLayerCanvas.width = 0;
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zoomLayerCanvas.height = 0;
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if (removeFromDOM) {
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this.zoomLayer.remove();
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}
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this.zoomLayer = null;
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}
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reset({
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keepZoomLayer = false,
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keepAnnotationLayer = false,
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keepAnnotationEditorLayer = false,
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keepXfaLayer = false
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} = {}) {
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this.cancelRendering({
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keepAnnotationLayer,
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keepAnnotationEditorLayer,
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keepXfaLayer
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});
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this.renderingState = _ui_utils.RenderingStates.INITIAL;
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const div = this.div;
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div.style.width = Math.floor(this.viewport.width) + "px";
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div.style.height = Math.floor(this.viewport.height) + "px";
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const childNodes = div.childNodes,
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zoomLayerNode = keepZoomLayer && this.zoomLayer || null,
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annotationLayerNode = keepAnnotationLayer && this.annotationLayer?.div || null,
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annotationEditorLayerNode = keepAnnotationEditorLayer && this.annotationEditorLayer?.div || null,
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xfaLayerNode = keepXfaLayer && this.xfaLayer?.div || null;
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for (let i = childNodes.length - 1; i >= 0; i--) {
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const node = childNodes[i];
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switch (node) {
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case zoomLayerNode:
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case annotationLayerNode:
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case annotationEditorLayerNode:
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case xfaLayerNode:
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continue;
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}
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node.remove();
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}
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div.removeAttribute("data-loaded");
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if (annotationLayerNode) {
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this.annotationLayer.hide();
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}
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if (annotationEditorLayerNode) {
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this.annotationEditorLayer.hide();
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} else {
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this.annotationEditorLayer?.destroy();
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}
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if (xfaLayerNode) {
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this.xfaLayer.hide();
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}
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if (!zoomLayerNode) {
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if (this.canvas) {
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this.paintedViewportMap.delete(this.canvas);
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this.canvas.width = 0;
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this.canvas.height = 0;
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delete this.canvas;
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}
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this._resetZoomLayer();
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}
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if (this.svg) {
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this.paintedViewportMap.delete(this.svg);
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delete this.svg;
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}
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this.loadingIconDiv = document.createElement("div");
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this.loadingIconDiv.className = "loadingIcon notVisible";
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if (this._isStandalone) {
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this.toggleLoadingIconSpinner(true);
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}
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this.loadingIconDiv.setAttribute("role", "img");
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this.l10n.get("loading").then(msg => {
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this.loadingIconDiv?.setAttribute("aria-label", msg);
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});
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div.append(this.loadingIconDiv);
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}
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update({
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scale = 0,
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rotation = null,
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optionalContentConfigPromise = null
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}) {
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this.scale = scale || this.scale;
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if (typeof rotation === "number") {
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this.rotation = rotation;
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}
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if (optionalContentConfigPromise instanceof Promise) {
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this._optionalContentConfigPromise = optionalContentConfigPromise;
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optionalContentConfigPromise.then(optionalContentConfig => {
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if (optionalContentConfigPromise !== this._optionalContentConfigPromise) {
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return;
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}
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this.#useThumbnailCanvas.initialOptionalContent = optionalContentConfig.hasInitialVisibility;
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});
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}
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const totalRotation = (this.rotation + this.pdfPageRotate) % 360;
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this.viewport = this.viewport.clone({
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scale: this.scale * _pdf.PixelsPerInch.PDF_TO_CSS_UNITS,
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rotation: totalRotation
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});
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if (this._isStandalone) {
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_ui_utils.docStyle.setProperty("--scale-factor", this.viewport.scale);
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}
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if (this.svg) {
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this.cssTransform({
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target: this.svg,
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redrawAnnotationLayer: true,
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redrawAnnotationEditorLayer: true,
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redrawXfaLayer: true
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});
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this.eventBus.dispatch("pagerendered", {
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source: this,
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pageNumber: this.id,
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cssTransform: true,
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timestamp: performance.now(),
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error: this._renderError
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});
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return;
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}
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let isScalingRestricted = false;
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if (this.canvas && this.maxCanvasPixels > 0) {
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const outputScale = this.outputScale;
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if ((Math.floor(this.viewport.width) * outputScale.sx | 0) * (Math.floor(this.viewport.height) * outputScale.sy | 0) > this.maxCanvasPixels) {
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isScalingRestricted = true;
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}
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}
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if (this.canvas) {
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if (this.useOnlyCssZoom || this.hasRestrictedScaling && isScalingRestricted) {
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this.cssTransform({
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target: this.canvas,
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redrawAnnotationLayer: true,
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redrawAnnotationEditorLayer: true,
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redrawXfaLayer: true
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});
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this.eventBus.dispatch("pagerendered", {
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source: this,
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pageNumber: this.id,
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cssTransform: true,
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timestamp: performance.now(),
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error: this._renderError
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});
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return;
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}
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if (!this.zoomLayer && !this.canvas.hidden) {
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this.zoomLayer = this.canvas.parentNode;
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this.zoomLayer.style.position = "absolute";
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}
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}
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if (this.zoomLayer) {
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this.cssTransform({
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target: this.zoomLayer.firstChild
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});
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}
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this.reset({
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keepZoomLayer: true,
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keepAnnotationLayer: true,
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keepAnnotationEditorLayer: true,
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keepXfaLayer: true
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});
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}
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cancelRendering({
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keepAnnotationLayer = false,
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keepAnnotationEditorLayer = false,
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keepXfaLayer = false
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} = {}) {
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if (this.paintTask) {
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this.paintTask.cancel();
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this.paintTask = null;
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}
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this.resume = null;
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if (this.textLayer) {
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this.textLayer.cancel();
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this.textLayer = null;
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}
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if (this.annotationLayer && (!keepAnnotationLayer || !this.annotationLayer.div)) {
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this.annotationLayer.cancel();
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this.annotationLayer = null;
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this._annotationCanvasMap = null;
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}
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if (this.annotationEditorLayer && (!keepAnnotationEditorLayer || !this.annotationEditorLayer.div)) {
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this.annotationEditorLayer.cancel();
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this.annotationEditorLayer = null;
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}
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if (this.xfaLayer && (!keepXfaLayer || !this.xfaLayer.div)) {
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this.xfaLayer.cancel();
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this.xfaLayer = null;
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this.textHighlighter?.disable();
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}
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if (this._onTextLayerRendered) {
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this.eventBus._off("textlayerrendered", this._onTextLayerRendered);
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this._onTextLayerRendered = null;
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}
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}
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cssTransform({
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target,
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redrawAnnotationLayer = false,
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redrawAnnotationEditorLayer = false,
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redrawXfaLayer = false
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}) {
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const width = this.viewport.width;
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const height = this.viewport.height;
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const div = this.div;
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target.style.width = target.parentNode.style.width = div.style.width = Math.floor(width) + "px";
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target.style.height = target.parentNode.style.height = div.style.height = Math.floor(height) + "px";
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const relativeRotation = this.viewport.rotation - this.paintedViewportMap.get(target).rotation;
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const absRotation = Math.abs(relativeRotation);
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let scaleX = 1,
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scaleY = 1;
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if (absRotation === 90 || absRotation === 270) {
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scaleX = height / width;
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scaleY = width / height;
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}
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target.style.transform = `rotate(${relativeRotation}deg) scale(${scaleX}, ${scaleY})`;
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if (this.textLayer) {
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const textLayerViewport = this.textLayer.viewport;
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const textRelativeRotation = this.viewport.rotation - textLayerViewport.rotation;
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const textAbsRotation = Math.abs(textRelativeRotation);
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let scale = width / textLayerViewport.width;
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if (textAbsRotation === 90 || textAbsRotation === 270) {
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scale = width / textLayerViewport.height;
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}
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const textLayerDiv = this.textLayer.textLayerDiv;
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let transX, transY;
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switch (textAbsRotation) {
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case 0:
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transX = transY = 0;
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break;
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case 90:
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transX = 0;
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transY = "-" + textLayerDiv.style.height;
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break;
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case 180:
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transX = "-" + textLayerDiv.style.width;
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transY = "-" + textLayerDiv.style.height;
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break;
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case 270:
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transX = "-" + textLayerDiv.style.width;
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transY = 0;
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break;
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default:
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console.error("Bad rotation value.");
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break;
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}
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textLayerDiv.style.transform = `rotate(${textAbsRotation}deg) ` + `scale(${scale}) ` + `translate(${transX}, ${transY})`;
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textLayerDiv.style.transformOrigin = "0% 0%";
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}
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if (redrawAnnotationLayer && this.annotationLayer) {
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this._renderAnnotationLayer();
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}
|
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if (redrawAnnotationEditorLayer && this.annotationEditorLayer) {
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this._renderAnnotationEditorLayer();
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}
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if (redrawXfaLayer && this.xfaLayer) {
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this._renderXfaLayer();
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}
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}
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get width() {
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return this.viewport.width;
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}
|
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get height() {
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return this.viewport.height;
|
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}
|
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getPagePoint(x, y) {
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return this.viewport.convertToPdfPoint(x, y);
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}
|
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toggleLoadingIconSpinner(viewVisible = false) {
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this.loadingIconDiv?.classList.toggle("notVisible", !viewVisible);
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}
|
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|
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draw() {
|
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if (this.renderingState !== _ui_utils.RenderingStates.INITIAL) {
|
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console.error("Must be in new state before drawing");
|
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this.reset();
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}
|
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|
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const {
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div,
|
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pdfPage
|
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} = this;
|
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|
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if (!pdfPage) {
|
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this.renderingState = _ui_utils.RenderingStates.FINISHED;
|
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|
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if (this.loadingIconDiv) {
|
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this.loadingIconDiv.remove();
|
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delete this.loadingIconDiv;
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}
|
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|
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return Promise.reject(new Error("pdfPage is not loaded"));
|
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}
|
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|
|
this.renderingState = _ui_utils.RenderingStates.RUNNING;
|
|
const canvasWrapper = document.createElement("div");
|
|
canvasWrapper.style.width = div.style.width;
|
|
canvasWrapper.style.height = div.style.height;
|
|
canvasWrapper.classList.add("canvasWrapper");
|
|
const lastDivBeforeTextDiv = this.annotationLayer?.div || this.annotationEditorLayer?.div;
|
|
|
|
if (lastDivBeforeTextDiv) {
|
|
lastDivBeforeTextDiv.before(canvasWrapper);
|
|
} else {
|
|
div.append(canvasWrapper);
|
|
}
|
|
|
|
let textLayer = null;
|
|
|
|
if (this.textLayerMode !== _ui_utils.TextLayerMode.DISABLE && this.textLayerFactory) {
|
|
this._accessibilityManager ||= new _text_accessibility.TextAccessibilityManager();
|
|
const textLayerDiv = document.createElement("div");
|
|
textLayerDiv.className = "textLayer";
|
|
textLayerDiv.style.width = canvasWrapper.style.width;
|
|
textLayerDiv.style.height = canvasWrapper.style.height;
|
|
|
|
if (lastDivBeforeTextDiv) {
|
|
lastDivBeforeTextDiv.before(textLayerDiv);
|
|
} else {
|
|
div.append(textLayerDiv);
|
|
}
|
|
|
|
textLayer = this.textLayerFactory.createTextLayerBuilder({
|
|
textLayerDiv,
|
|
pageIndex: this.id - 1,
|
|
viewport: this.viewport,
|
|
enhanceTextSelection: this.textLayerMode === _ui_utils.TextLayerMode.ENABLE_ENHANCE,
|
|
eventBus: this.eventBus,
|
|
highlighter: this.textHighlighter,
|
|
accessibilityManager: this._accessibilityManager
|
|
});
|
|
}
|
|
|
|
this.textLayer = textLayer;
|
|
|
|
if (this.#annotationMode !== _pdf.AnnotationMode.DISABLE && this.annotationLayerFactory) {
|
|
this._annotationCanvasMap ||= new Map();
|
|
this.annotationLayer ||= this.annotationLayerFactory.createAnnotationLayerBuilder({
|
|
pageDiv: div,
|
|
pdfPage,
|
|
imageResourcesPath: this.imageResourcesPath,
|
|
renderForms: this.#annotationMode === _pdf.AnnotationMode.ENABLE_FORMS,
|
|
l10n: this.l10n,
|
|
annotationCanvasMap: this._annotationCanvasMap,
|
|
accessibilityManager: this._accessibilityManager
|
|
});
|
|
}
|
|
|
|
if (this.xfaLayer?.div) {
|
|
div.append(this.xfaLayer.div);
|
|
}
|
|
|
|
let renderContinueCallback = null;
|
|
|
|
if (this.renderingQueue) {
|
|
renderContinueCallback = cont => {
|
|
if (!this.renderingQueue.isHighestPriority(this)) {
|
|
this.renderingState = _ui_utils.RenderingStates.PAUSED;
|
|
|
|
this.resume = () => {
|
|
this.renderingState = _ui_utils.RenderingStates.RUNNING;
|
|
cont();
|
|
};
|
|
|
|
return;
|
|
}
|
|
|
|
cont();
|
|
};
|
|
}
|
|
|
|
const finishPaintTask = async (error = null) => {
|
|
if (paintTask === this.paintTask) {
|
|
this.paintTask = null;
|
|
}
|
|
|
|
if (error instanceof _pdf.RenderingCancelledException) {
|
|
this._renderError = null;
|
|
return;
|
|
}
|
|
|
|
this._renderError = error;
|
|
this.renderingState = _ui_utils.RenderingStates.FINISHED;
|
|
|
|
if (this.loadingIconDiv) {
|
|
this.loadingIconDiv.remove();
|
|
delete this.loadingIconDiv;
|
|
}
|
|
|
|
this._resetZoomLayer(true);
|
|
|
|
this.#useThumbnailCanvas.regularAnnotations = !paintTask.separateAnnots;
|
|
this.eventBus.dispatch("pagerendered", {
|
|
source: this,
|
|
pageNumber: this.id,
|
|
cssTransform: false,
|
|
timestamp: performance.now(),
|
|
error: this._renderError
|
|
});
|
|
|
|
if (error) {
|
|
throw error;
|
|
}
|
|
};
|
|
|
|
const paintTask = this.renderer === _ui_utils.RendererType.SVG ? this.paintOnSvg(canvasWrapper) : this.paintOnCanvas(canvasWrapper);
|
|
paintTask.onRenderContinue = renderContinueCallback;
|
|
this.paintTask = paintTask;
|
|
const resultPromise = paintTask.promise.then(() => {
|
|
return finishPaintTask(null).then(() => {
|
|
if (textLayer) {
|
|
const readableStream = pdfPage.streamTextContent({
|
|
includeMarkedContent: true
|
|
});
|
|
textLayer.setTextContentStream(readableStream);
|
|
textLayer.render();
|
|
}
|
|
|
|
if (this.annotationLayer) {
|
|
this._renderAnnotationLayer().then(() => {
|
|
if (this.annotationEditorLayerFactory) {
|
|
this.annotationEditorLayer ||= this.annotationEditorLayerFactory.createAnnotationEditorLayerBuilder({
|
|
pageDiv: div,
|
|
pdfPage,
|
|
l10n: this.l10n,
|
|
accessibilityManager: this._accessibilityManager
|
|
});
|
|
|
|
this._renderAnnotationEditorLayer();
|
|
}
|
|
});
|
|
}
|
|
});
|
|
}, function (reason) {
|
|
return finishPaintTask(reason);
|
|
});
|
|
|
|
if (this.xfaLayerFactory) {
|
|
this.xfaLayer ||= this.xfaLayerFactory.createXfaLayerBuilder({
|
|
pageDiv: div,
|
|
pdfPage
|
|
});
|
|
|
|
this._renderXfaLayer();
|
|
}
|
|
|
|
if (this.structTreeLayerFactory && this.textLayer && this.canvas) {
|
|
this._onTextLayerRendered = event => {
|
|
if (event.pageNumber !== this.id) {
|
|
return;
|
|
}
|
|
|
|
this.eventBus._off("textlayerrendered", this._onTextLayerRendered);
|
|
|
|
this._onTextLayerRendered = null;
|
|
|
|
if (!this.canvas) {
|
|
return;
|
|
}
|
|
|
|
this.pdfPage.getStructTree().then(tree => {
|
|
if (!tree) {
|
|
return;
|
|
}
|
|
|
|
if (!this.canvas) {
|
|
return;
|
|
}
|
|
|
|
const treeDom = this.structTreeLayer.render(tree);
|
|
treeDom.classList.add("structTree");
|
|
this.canvas.append(treeDom);
|
|
});
|
|
};
|
|
|
|
this.eventBus._on("textlayerrendered", this._onTextLayerRendered);
|
|
|
|
this.structTreeLayer = this.structTreeLayerFactory.createStructTreeLayerBuilder({
|
|
pdfPage
|
|
});
|
|
}
|
|
|
|
div.setAttribute("data-loaded", true);
|
|
this.eventBus.dispatch("pagerender", {
|
|
source: this,
|
|
pageNumber: this.id
|
|
});
|
|
return resultPromise;
|
|
}
|
|
|
|
paintOnCanvas(canvasWrapper) {
|
|
const renderCapability = (0, _pdf.createPromiseCapability)();
|
|
const result = {
|
|
promise: renderCapability.promise,
|
|
|
|
onRenderContinue(cont) {
|
|
cont();
|
|
},
|
|
|
|
cancel() {
|
|
renderTask.cancel();
|
|
},
|
|
|
|
get separateAnnots() {
|
|
return renderTask.separateAnnots;
|
|
}
|
|
|
|
};
|
|
const viewport = this.viewport;
|
|
const canvas = document.createElement("canvas");
|
|
canvas.setAttribute("role", "presentation");
|
|
canvas.hidden = true;
|
|
let isCanvasHidden = true;
|
|
|
|
const showCanvas = function () {
|
|
if (isCanvasHidden) {
|
|
canvas.hidden = false;
|
|
isCanvasHidden = false;
|
|
}
|
|
};
|
|
|
|
canvasWrapper.append(canvas);
|
|
this.canvas = canvas;
|
|
const ctx = canvas.getContext("2d", {
|
|
alpha: false
|
|
});
|
|
const outputScale = this.outputScale = new _ui_utils.OutputScale();
|
|
|
|
if (this.useOnlyCssZoom) {
|
|
const actualSizeViewport = viewport.clone({
|
|
scale: _pdf.PixelsPerInch.PDF_TO_CSS_UNITS
|
|
});
|
|
outputScale.sx *= actualSizeViewport.width / viewport.width;
|
|
outputScale.sy *= actualSizeViewport.height / viewport.height;
|
|
}
|
|
|
|
if (this.maxCanvasPixels > 0) {
|
|
const pixelsInViewport = viewport.width * viewport.height;
|
|
const maxScale = Math.sqrt(this.maxCanvasPixels / pixelsInViewport);
|
|
|
|
if (outputScale.sx > maxScale || outputScale.sy > maxScale) {
|
|
outputScale.sx = maxScale;
|
|
outputScale.sy = maxScale;
|
|
this.hasRestrictedScaling = true;
|
|
} else {
|
|
this.hasRestrictedScaling = false;
|
|
}
|
|
}
|
|
|
|
const sfx = (0, _ui_utils.approximateFraction)(outputScale.sx);
|
|
const sfy = (0, _ui_utils.approximateFraction)(outputScale.sy);
|
|
canvas.width = (0, _ui_utils.roundToDivide)(viewport.width * outputScale.sx, sfx[0]);
|
|
canvas.height = (0, _ui_utils.roundToDivide)(viewport.height * outputScale.sy, sfy[0]);
|
|
canvas.style.width = (0, _ui_utils.roundToDivide)(viewport.width, sfx[1]) + "px";
|
|
canvas.style.height = (0, _ui_utils.roundToDivide)(viewport.height, sfy[1]) + "px";
|
|
this.paintedViewportMap.set(canvas, viewport);
|
|
const transform = outputScale.scaled ? [outputScale.sx, 0, 0, outputScale.sy, 0, 0] : null;
|
|
const renderContext = {
|
|
canvasContext: ctx,
|
|
transform,
|
|
viewport: this.viewport,
|
|
annotationMode: this.#annotationMode,
|
|
optionalContentConfigPromise: this._optionalContentConfigPromise,
|
|
annotationCanvasMap: this._annotationCanvasMap,
|
|
pageColors: this.pageColors
|
|
};
|
|
const renderTask = this.pdfPage.render(renderContext);
|
|
|
|
renderTask.onContinue = function (cont) {
|
|
showCanvas();
|
|
|
|
if (result.onRenderContinue) {
|
|
result.onRenderContinue(cont);
|
|
} else {
|
|
cont();
|
|
}
|
|
};
|
|
|
|
renderTask.promise.then(function () {
|
|
showCanvas();
|
|
renderCapability.resolve();
|
|
}, function (error) {
|
|
showCanvas();
|
|
renderCapability.reject(error);
|
|
});
|
|
return result;
|
|
}
|
|
|
|
paintOnSvg(wrapper) {
|
|
let cancelled = false;
|
|
|
|
const ensureNotCancelled = () => {
|
|
if (cancelled) {
|
|
throw new _pdf.RenderingCancelledException(`Rendering cancelled, page ${this.id}`, "svg");
|
|
}
|
|
};
|
|
|
|
const pdfPage = this.pdfPage;
|
|
const actualSizeViewport = this.viewport.clone({
|
|
scale: _pdf.PixelsPerInch.PDF_TO_CSS_UNITS
|
|
});
|
|
const promise = pdfPage.getOperatorList({
|
|
annotationMode: this.#annotationMode
|
|
}).then(opList => {
|
|
ensureNotCancelled();
|
|
const svgGfx = new _pdf.SVGGraphics(pdfPage.commonObjs, pdfPage.objs);
|
|
return svgGfx.getSVG(opList, actualSizeViewport).then(svg => {
|
|
ensureNotCancelled();
|
|
this.svg = svg;
|
|
this.paintedViewportMap.set(svg, actualSizeViewport);
|
|
svg.style.width = wrapper.style.width;
|
|
svg.style.height = wrapper.style.height;
|
|
this.renderingState = _ui_utils.RenderingStates.FINISHED;
|
|
wrapper.append(svg);
|
|
});
|
|
});
|
|
return {
|
|
promise,
|
|
|
|
onRenderContinue(cont) {
|
|
cont();
|
|
},
|
|
|
|
cancel() {
|
|
cancelled = true;
|
|
},
|
|
|
|
get separateAnnots() {
|
|
return false;
|
|
}
|
|
|
|
};
|
|
}
|
|
|
|
setPageLabel(label) {
|
|
this.pageLabel = typeof label === "string" ? label : null;
|
|
|
|
if (this.pageLabel !== null) {
|
|
this.div.setAttribute("data-page-label", this.pageLabel);
|
|
} else {
|
|
this.div.removeAttribute("data-page-label");
|
|
}
|
|
}
|
|
|
|
get thumbnailCanvas() {
|
|
const {
|
|
initialOptionalContent,
|
|
regularAnnotations
|
|
} = this.#useThumbnailCanvas;
|
|
return initialOptionalContent && regularAnnotations ? this.canvas : null;
|
|
}
|
|
|
|
}
|
|
|
|
exports.PDFPageView = PDFPageView; |