/**
|
* @licstart The following is the entire license notice for the
|
* JavaScript code in this page
|
*
|
* 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.
|
*
|
* @licend The above is the entire license notice for the
|
* JavaScript code in this page
|
*/
|
"use strict";
|
|
Object.defineProperty(exports, "__esModule", {
|
value: true
|
});
|
exports.BaseStandardFontDataFactory = exports.BaseSVGFactory = exports.BaseCanvasFactory = exports.BaseCMapReaderFactory = void 0;
|
|
var _util = require("../shared/util.js");
|
|
class BaseCanvasFactory {
|
constructor() {
|
if (this.constructor === BaseCanvasFactory) {
|
(0, _util.unreachable)("Cannot initialize BaseCanvasFactory.");
|
}
|
}
|
|
create(width, height) {
|
if (width <= 0 || height <= 0) {
|
throw new Error("Invalid canvas size");
|
}
|
|
const canvas = this._createCanvas(width, height);
|
|
return {
|
canvas,
|
context: canvas.getContext("2d")
|
};
|
}
|
|
reset(canvasAndContext, width, height) {
|
if (!canvasAndContext.canvas) {
|
throw new Error("Canvas is not specified");
|
}
|
|
if (width <= 0 || height <= 0) {
|
throw new Error("Invalid canvas size");
|
}
|
|
canvasAndContext.canvas.width = width;
|
canvasAndContext.canvas.height = height;
|
}
|
|
destroy(canvasAndContext) {
|
if (!canvasAndContext.canvas) {
|
throw new Error("Canvas is not specified");
|
}
|
|
canvasAndContext.canvas.width = 0;
|
canvasAndContext.canvas.height = 0;
|
canvasAndContext.canvas = null;
|
canvasAndContext.context = null;
|
}
|
|
_createCanvas(width, height) {
|
(0, _util.unreachable)("Abstract method `_createCanvas` called.");
|
}
|
|
}
|
|
exports.BaseCanvasFactory = BaseCanvasFactory;
|
|
class BaseCMapReaderFactory {
|
constructor({
|
baseUrl = null,
|
isCompressed = false
|
}) {
|
if (this.constructor === BaseCMapReaderFactory) {
|
(0, _util.unreachable)("Cannot initialize BaseCMapReaderFactory.");
|
}
|
|
this.baseUrl = baseUrl;
|
this.isCompressed = isCompressed;
|
}
|
|
async fetch({
|
name
|
}) {
|
if (!this.baseUrl) {
|
throw new Error('The CMap "baseUrl" parameter must be specified, ensure that ' + 'the "cMapUrl" and "cMapPacked" API parameters are provided.');
|
}
|
|
if (!name) {
|
throw new Error("CMap name must be specified.");
|
}
|
|
const url = this.baseUrl + name + (this.isCompressed ? ".bcmap" : "");
|
const compressionType = this.isCompressed ? _util.CMapCompressionType.BINARY : _util.CMapCompressionType.NONE;
|
return this._fetchData(url, compressionType).catch(reason => {
|
throw new Error(`Unable to load ${this.isCompressed ? "binary " : ""}CMap at: ${url}`);
|
});
|
}
|
|
_fetchData(url, compressionType) {
|
(0, _util.unreachable)("Abstract method `_fetchData` called.");
|
}
|
|
}
|
|
exports.BaseCMapReaderFactory = BaseCMapReaderFactory;
|
|
class BaseStandardFontDataFactory {
|
constructor({
|
baseUrl = null
|
}) {
|
if (this.constructor === BaseStandardFontDataFactory) {
|
(0, _util.unreachable)("Cannot initialize BaseStandardFontDataFactory.");
|
}
|
|
this.baseUrl = baseUrl;
|
}
|
|
async fetch({
|
filename
|
}) {
|
if (!this.baseUrl) {
|
throw new Error('The standard font "baseUrl" parameter must be specified, ensure that ' + 'the "standardFontDataUrl" API parameter is provided.');
|
}
|
|
if (!filename) {
|
throw new Error("Font filename must be specified.");
|
}
|
|
const url = `${this.baseUrl}${filename}`;
|
return this._fetchData(url).catch(reason => {
|
throw new Error(`Unable to load font data at: ${url}`);
|
});
|
}
|
|
_fetchData(url) {
|
(0, _util.unreachable)("Abstract method `_fetchData` called.");
|
}
|
|
}
|
|
exports.BaseStandardFontDataFactory = BaseStandardFontDataFactory;
|
|
class BaseSVGFactory {
|
constructor() {
|
if (this.constructor === BaseSVGFactory) {
|
(0, _util.unreachable)("Cannot initialize BaseSVGFactory.");
|
}
|
}
|
|
create(width, height, skipDimensions = false) {
|
if (width <= 0 || height <= 0) {
|
throw new Error("Invalid SVG dimensions");
|
}
|
|
const svg = this._createSVG("svg:svg");
|
|
svg.setAttribute("version", "1.1");
|
|
if (!skipDimensions) {
|
svg.setAttribute("width", `${width}px`);
|
svg.setAttribute("height", `${height}px`);
|
}
|
|
svg.setAttribute("preserveAspectRatio", "none");
|
svg.setAttribute("viewBox", `0 0 ${width} ${height}`);
|
return svg;
|
}
|
|
createElement(type) {
|
if (typeof type !== "string") {
|
throw new Error("Invalid SVG element type");
|
}
|
|
return this._createSVG(type);
|
}
|
|
_createSVG(type) {
|
(0, _util.unreachable)("Abstract method `_createSVG` called.");
|
}
|
|
}
|
|
exports.BaseSVGFactory = BaseSVGFactory;
|
