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Merge pull request mozilla#13591 from calixteman/xfa_default_font
XFA - Match font family correctly
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,157 @@ | ||
| /* Copyright 2021 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 { warn } from "../../shared/util.js"; | ||
|
|
||
| class FontFinder { | ||
| constructor(pdfFonts) { | ||
| this.fonts = new Map(); | ||
| this.cache = new Map(); | ||
| this.warned = new Set(); | ||
| this.defaultFont = null; | ||
| for (const pdfFont of pdfFonts) { | ||
| const cssFontInfo = pdfFont.cssFontInfo; | ||
| const name = cssFontInfo.fontFamily; | ||
| let font = this.fonts.get(name); | ||
| if (!font) { | ||
| font = Object.create(null); | ||
| this.fonts.set(name, font); | ||
| if (!this.defaultFont) { | ||
| this.defaultFont = font; | ||
| } | ||
| } | ||
| let property = ""; | ||
| if (cssFontInfo.italicAngle !== "0") { | ||
| if (parseFloat(cssFontInfo.fontWeight) >= 700) { | ||
| property = "bolditalic"; | ||
| } else { | ||
| property = "italic"; | ||
| } | ||
| } else if (parseFloat(cssFontInfo.fontWeight) >= 700) { | ||
| property = "bold"; | ||
| } | ||
|
|
||
| if (!property) { | ||
| if ( | ||
| pdfFont.name.includes("Bold") || | ||
| (pdfFont.psName && pdfFont.psName.includes("Bold")) | ||
| ) { | ||
| property = "bold"; | ||
| } | ||
| if ( | ||
| pdfFont.name.includes("Italic") || | ||
| pdfFont.name.endsWith("It") || | ||
| (pdfFont.psName && | ||
| (pdfFont.psName.includes("Italic") || | ||
| pdfFont.psName.endsWith("It"))) | ||
| ) { | ||
| property += "italic"; | ||
| } | ||
| } | ||
|
|
||
| if (!property) { | ||
| property = "regular"; | ||
| } | ||
|
|
||
| font[property] = pdfFont; | ||
| } | ||
|
|
||
| for (const pdfFont of this.fonts.values()) { | ||
| if (!pdfFont.regular) { | ||
| pdfFont.regular = pdfFont.italic || pdfFont.bold || pdfFont.bolditalic; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| getDefault() { | ||
| return this.defaultFont; | ||
| } | ||
|
|
||
| find(fontName, mustWarn = true) { | ||
| let font = this.fonts.get(fontName) || this.cache.get(fontName); | ||
| if (font) { | ||
| return font; | ||
| } | ||
|
|
||
| const pattern = /,|-| |bolditalic|bold|italic|regular|it/gi; | ||
| let name = fontName.replace(pattern, ""); | ||
| font = this.fonts.get(name); | ||
| if (font) { | ||
| this.cache.set(fontName, font); | ||
| return font; | ||
| } | ||
| name = name.toLowerCase(); | ||
|
|
||
| const maybe = []; | ||
| for (const [family, pdfFont] of this.fonts.entries()) { | ||
| if (family.replace(pattern, "").toLowerCase().startsWith(name)) { | ||
| maybe.push(pdfFont); | ||
| } | ||
| } | ||
|
|
||
| if (maybe.length === 0) { | ||
| for (const [, pdfFont] of this.fonts.entries()) { | ||
| if ( | ||
| pdfFont.regular.name && | ||
| pdfFont.regular.name | ||
| .replace(pattern, "") | ||
| .toLowerCase() | ||
| .startsWith(name) | ||
| ) { | ||
| maybe.push(pdfFont); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if (maybe.length === 0) { | ||
| name = name.replace(/psmt|mt/gi, ""); | ||
| for (const [family, pdfFont] of this.fonts.entries()) { | ||
| if (family.replace(pattern, "").toLowerCase().startsWith(name)) { | ||
| maybe.push(pdfFont); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if (maybe.length === 0) { | ||
| for (const pdfFont of this.fonts.values()) { | ||
| if ( | ||
| pdfFont.regular.name && | ||
| pdfFont.regular.name | ||
| .replace(pattern, "") | ||
| .toLowerCase() | ||
| .startsWith(name) | ||
| ) { | ||
| maybe.push(pdfFont); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if (maybe.length >= 1) { | ||
| if (maybe.length !== 1 && mustWarn) { | ||
| warn(`XFA - Too many choices to guess the correct font: ${fontName}`); | ||
| } | ||
| this.cache.set(fontName, maybe[0]); | ||
| return maybe[0]; | ||
| } | ||
|
|
||
| if (mustWarn && !this.warned.has(fontName)) { | ||
| this.warned.add(fontName); | ||
| warn(`XFA - Cannot find the font: ${fontName}`); | ||
| } | ||
| return null; | ||
| } | ||
| } | ||
|
|
||
| export { FontFinder }; |
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