Move BaseCanvasFactory, BaseCMapReaderFactory, and BaseStandardFontDataFactory to their own file
Given that these factories are being used in *different* files, for Browser respectively Node.js implementations, it seems reasonable to move them into their own file instead.
This commit is contained in:
Jonas Jenwald
parent
2a6111044e
commit
248113bbf0
129
src/display/base_factory.js
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129
src/display/base_factory.js
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@ -0,0 +1,129 @@
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/* Copyright 2015 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 { CMapCompressionType, unreachable } from "../shared/util.js";
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class BaseCanvasFactory {
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constructor() {
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if (this.constructor === BaseCanvasFactory) {
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unreachable("Cannot initialize BaseCanvasFactory.");
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}
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}
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create(width, height) {
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unreachable("Abstract method `create` called.");
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}
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reset(canvasAndContext, width, height) {
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if (!canvasAndContext.canvas) {
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throw new Error("Canvas is not specified");
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}
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if (width <= 0 || height <= 0) {
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throw new Error("Invalid canvas size");
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}
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canvasAndContext.canvas.width = width;
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canvasAndContext.canvas.height = height;
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}
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destroy(canvasAndContext) {
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if (!canvasAndContext.canvas) {
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throw new Error("Canvas is not specified");
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}
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// Zeroing the width and height cause Firefox to release graphics
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// resources immediately, which can greatly reduce memory consumption.
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canvasAndContext.canvas.width = 0;
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canvasAndContext.canvas.height = 0;
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canvasAndContext.canvas = null;
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canvasAndContext.context = null;
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}
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}
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class BaseCMapReaderFactory {
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constructor({ baseUrl = null, isCompressed = false }) {
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if (this.constructor === BaseCMapReaderFactory) {
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unreachable("Cannot initialize BaseCMapReaderFactory.");
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}
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this.baseUrl = baseUrl;
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this.isCompressed = isCompressed;
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}
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async fetch({ name }) {
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if (!this.baseUrl) {
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throw new Error(
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'The CMap "baseUrl" parameter must be specified, ensure that ' +
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'the "cMapUrl" and "cMapPacked" API parameters are provided.'
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);
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}
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if (!name) {
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throw new Error("CMap name must be specified.");
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}
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const url = this.baseUrl + name + (this.isCompressed ? ".bcmap" : "");
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const compressionType = this.isCompressed
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? CMapCompressionType.BINARY
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: CMapCompressionType.NONE;
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return this._fetchData(url, compressionType).catch(reason => {
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throw new Error(
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`Unable to load ${this.isCompressed ? "binary " : ""}CMap at: ${url}`
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);
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});
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}
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/**
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* @private
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*/
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_fetchData(url, compressionType) {
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unreachable("Abstract method `_fetchData` called.");
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}
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}
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class BaseStandardFontDataFactory {
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constructor({ baseUrl = null }) {
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if (this.constructor === BaseStandardFontDataFactory) {
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unreachable("Cannot initialize BaseStandardFontDataFactory.");
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}
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this.baseUrl = baseUrl;
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}
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async fetch({ filename }) {
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if (!this.baseUrl) {
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throw new Error(
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'The standard font "baseUrl" parameter must be specified, ensure that ' +
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'the "standardFontDataUrl" API parameter is provided.'
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);
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}
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if (!filename) {
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throw new Error("Font filename must be specified.");
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}
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const url = this.baseUrl + filename + ".pfb";
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return this._fetchData(url).catch(reason => {
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throw new Error(`Unable to load font data at: ${url}`);
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});
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}
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/**
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* @private
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*/
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_fetchData(url) {
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unreachable("Abstract method `_fetchData` called.");
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}
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}
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export {
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BaseCanvasFactory,
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BaseCMapReaderFactory,
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BaseStandardFontDataFactory,
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};
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@ -16,53 +16,21 @@
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import {
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assert,
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BaseException,
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CMapCompressionType,
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isString,
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removeNullCharacters,
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stringToBytes,
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unreachable,
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Util,
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warn,
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} from "../shared/util.js";
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import {
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BaseCanvasFactory,
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BaseCMapReaderFactory,
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BaseStandardFontDataFactory,
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} from "./base_factory.js";
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const DEFAULT_LINK_REL = "noopener noreferrer nofollow";
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const SVG_NS = "http://www.w3.org/2000/svg";
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class BaseCanvasFactory {
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constructor() {
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if (this.constructor === BaseCanvasFactory) {
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unreachable("Cannot initialize BaseCanvasFactory.");
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}
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}
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create(width, height) {
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unreachable("Abstract method `create` called.");
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}
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reset(canvasAndContext, width, height) {
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if (!canvasAndContext.canvas) {
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throw new Error("Canvas is not specified");
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}
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if (width <= 0 || height <= 0) {
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throw new Error("Invalid canvas size");
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}
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canvasAndContext.canvas.width = width;
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canvasAndContext.canvas.height = height;
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}
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destroy(canvasAndContext) {
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if (!canvasAndContext.canvas) {
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throw new Error("Canvas is not specified");
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}
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// Zeroing the width and height cause Firefox to release graphics
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// resources immediately, which can greatly reduce memory consumption.
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canvasAndContext.canvas.width = 0;
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canvasAndContext.canvas.height = 0;
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canvasAndContext.canvas = null;
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canvasAndContext.context = null;
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}
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}
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class DOMCanvasFactory extends BaseCanvasFactory {
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constructor({ ownerDocument = globalThis.document } = {}) {
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super();
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@ -134,45 +102,6 @@ function fetchData(url, asTypedArray) {
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});
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}
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class BaseCMapReaderFactory {
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constructor({ baseUrl = null, isCompressed = false }) {
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if (this.constructor === BaseCMapReaderFactory) {
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unreachable("Cannot initialize BaseCMapReaderFactory.");
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}
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this.baseUrl = baseUrl;
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this.isCompressed = isCompressed;
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}
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async fetch({ name }) {
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if (!this.baseUrl) {
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throw new Error(
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'The CMap "baseUrl" parameter must be specified, ensure that ' +
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'the "cMapUrl" and "cMapPacked" API parameters are provided.'
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);
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}
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if (!name) {
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throw new Error("CMap name must be specified.");
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}
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const url = this.baseUrl + name + (this.isCompressed ? ".bcmap" : "");
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const compressionType = this.isCompressed
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? CMapCompressionType.BINARY
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: CMapCompressionType.NONE;
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return this._fetchData(url, compressionType).catch(reason => {
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throw new Error(
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`Unable to load ${this.isCompressed ? "binary " : ""}CMap at: ${url}`
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);
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});
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}
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/**
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* @private
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*/
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_fetchData(url, compressionType) {
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unreachable("Abstract method `_fetchData` called.");
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}
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}
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class DOMCMapReaderFactory extends BaseCMapReaderFactory {
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_fetchData(url, compressionType) {
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return fetchData(url, /* asTypedArray = */ this.isCompressed).then(data => {
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@ -181,32 +110,6 @@ class DOMCMapReaderFactory extends BaseCMapReaderFactory {
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}
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}
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class BaseStandardFontDataFactory {
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constructor({ baseUrl = null }) {
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if (this.constructor === BaseStandardFontDataFactory) {
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unreachable("Cannot initialize BaseStandardFontDataFactory.");
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}
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this.baseUrl = baseUrl;
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}
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async fetch({ filename }) {
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if (!this.baseUrl) {
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throw new Error(
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'The standard font "baseUrl" parameter must be specified, ensure that ' +
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'the "standardFontDataUrl" API parameter is provided.'
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);
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}
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if (!filename) {
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throw new Error("Font filename must be specified.");
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}
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const url = this.baseUrl + filename + ".pfb";
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return this._fetchData(url).catch(reason => {
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throw new Error(`Unable to load font data at: ${url}`);
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});
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}
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}
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class DOMStandardFontDataFactory extends BaseStandardFontDataFactory {
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_fetchData(url) {
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return fetchData(url, /* asTypedArray = */ true);
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@ -740,9 +643,6 @@ class PDFDateString {
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export {
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addLinkAttributes,
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BaseCanvasFactory,
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BaseCMapReaderFactory,
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BaseStandardFontDataFactory,
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DEFAULT_LINK_REL,
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deprecated,
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DOMCanvasFactory,
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@ -18,23 +18,10 @@ import {
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BaseCanvasFactory,
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BaseCMapReaderFactory,
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BaseStandardFontDataFactory,
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} from "./display_utils.js";
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} from "./base_factory.js";
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import { isNodeJS } from "../shared/is_node.js";
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import { unreachable } from "../shared/util.js";
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function fetchData(url) {
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return new Promise((resolve, reject) => {
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const fs = __non_webpack_require__("fs");
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fs.readFile(url, (error, data) => {
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if (error || !data) {
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reject(new Error(error));
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return;
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}
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resolve(new Uint8Array(data));
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});
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});
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}
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let NodeCanvasFactory = class {
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constructor() {
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unreachable("Not implemented: NodeCanvasFactory");
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@ -54,6 +41,19 @@ let NodeStandardFontDataFactory = class {
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};
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if ((typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) && isNodeJS) {
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const fetchData = function (url) {
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return new Promise((resolve, reject) => {
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const fs = __non_webpack_require__("fs");
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fs.readFile(url, (error, data) => {
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if (error || !data) {
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reject(new Error(error));
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return;
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}
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resolve(new Uint8Array(data));
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});
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});
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};
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NodeCanvasFactory = class extends BaseCanvasFactory {
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create(width, height) {
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if (width <= 0 || height <= 0) {
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