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pdf.js.mirror/src/core/font_renderer.js
Jonas Jenwald de36b2aaba Enable auto-formatting of the entire code-base using Prettier (issue 11444) 
Note that Prettier, purposely, has only limited [configuration options](https://prettier.io/docs/en/options.html). The configuration file is based on [the one in `mozilla central`](https://searchfox.org/mozilla-central/source/.prettierrc) with just a few additions (to avoid future breakage if the defaults ever changes).

Prettier is being used for a couple of reasons:

 - To be consistent with `mozilla-central`, where Prettier is already in use across the tree.

 - To ensure a *consistent* coding style everywhere, which is automatically enforced during linting (since Prettier is used as an ESLint plugin). This thus ends "all" formatting disussions once and for all, removing the need for review comments on most stylistic matters.

Many ESLint options are now redundant, and I've tried my best to remove all the now unnecessary options (but I may have missed some).
Note also that since Prettier considers the `printWidth` option as a guide, rather than a hard rule, this patch resorts to a small hack in the ESLint config to ensure that *comments* won't become too long.

*Please note:* This patch is generated automatically, by appending the `--fix` argument to the ESLint call used in the `gulp lint` task. It will thus require some additional clean-up, which will be done in a *separate* commit.

(On a more personal note, I'll readily admit that some of the changes Prettier makes are *extremely* ugly. However, in the name of consistency we'll probably have to live with that.)
2019-12-26 12:34:24 +01:00

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/* Copyright 2012 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 {
bytesToString,
FONT_IDENTITY_MATRIX,
FormatError,
unreachable,
warn,
} from "../shared/util";
import { CFFParser } from "./cff_parser";
import { getGlyphsUnicode } from "./glyphlist";
import { StandardEncoding } from "./encodings";
import { Stream } from "./stream";
var FontRendererFactory = (function FontRendererFactoryClosure() {
function getLong(data, offset) {
return (
(data[offset] << 24) |
(data[offset + 1] << 16) |
(data[offset + 2] << 8) |
data[offset + 3]
);
}
function getUshort(data, offset) {
return (data[offset] << 8) | data[offset + 1];
}
function parseCmap(data, start, end) {
var offset =
getUshort(data, start + 2) === 1
? getLong(data, start + 8)
: getLong(data, start + 16);
var format = getUshort(data, start + offset);
var ranges, p, i;
if (format === 4) {
getUshort(data, start + offset + 2); // length
var segCount = getUshort(data, start + offset + 6) >> 1;
p = start + offset + 14;
ranges = [];
for (i = 0; i < segCount; i++, p += 2) {
ranges[i] = { end: getUshort(data, p) };
}
p += 2;
for (i = 0; i < segCount; i++, p += 2) {
ranges[i].start = getUshort(data, p);
}
for (i = 0; i < segCount; i++, p += 2) {
ranges[i].idDelta = getUshort(data, p);
}
for (i = 0; i < segCount; i++, p += 2) {
var idOffset = getUshort(data, p);
if (idOffset === 0) {
continue;
}
ranges[i].ids = [];
for (var j = 0, jj = ranges[i].end - ranges[i].start + 1; j < jj; j++) {
ranges[i].ids[j] = getUshort(data, p + idOffset);
idOffset += 2;
}
}
return ranges;
} else if (format === 12) {
getLong(data, start + offset + 4); // length
var groups = getLong(data, start + offset + 12);
p = start + offset + 16;
ranges = [];
for (i = 0; i < groups; i++) {
ranges.push({
start: getLong(data, p),
end: getLong(data, p + 4),
idDelta: getLong(data, p + 8) - getLong(data, p),
});
p += 12;
}
return ranges;
}
throw new FormatError(`unsupported cmap: ${format}`);
}
function parseCff(data, start, end, seacAnalysisEnabled) {
var properties = {};
var parser = new CFFParser(
new Stream(data, start, end - start),
properties,
seacAnalysisEnabled
);
var cff = parser.parse();
return {
glyphs: cff.charStrings.objects,
subrs:
cff.topDict.privateDict &&
cff.topDict.privateDict.subrsIndex &&
cff.topDict.privateDict.subrsIndex.objects,
gsubrs: cff.globalSubrIndex && cff.globalSubrIndex.objects,
isCFFCIDFont: cff.isCIDFont,
fdSelect: cff.fdSelect,
fdArray: cff.fdArray,
};
}
function parseGlyfTable(glyf, loca, isGlyphLocationsLong) {
var itemSize, itemDecode;
if (isGlyphLocationsLong) {
itemSize = 4;
itemDecode = function fontItemDecodeLong(data, offset) {
return (
(data[offset] << 24) |
(data[offset + 1] << 16) |
(data[offset + 2] << 8) |
data[offset + 3]
);
};
} else {
itemSize = 2;
itemDecode = function fontItemDecode(data, offset) {
return (data[offset] << 9) | (data[offset + 1] << 1);
};
}
var glyphs = [];
var startOffset = itemDecode(loca, 0);
for (var j = itemSize; j < loca.length; j += itemSize) {
var endOffset = itemDecode(loca, j);
glyphs.push(glyf.subarray(startOffset, endOffset));
startOffset = endOffset;
}
return glyphs;
}
function lookupCmap(ranges, unicode) {
var code = unicode.codePointAt(0),
gid = 0;
var l = 0,
r = ranges.length - 1;
while (l < r) {
var c = (l + r + 1) >> 1;
if (code < ranges[c].start) {
r = c - 1;
} else {
l = c;
}
}
if (ranges[l].start <= code && code <= ranges[l].end) {
gid =
(ranges[l].idDelta +
(ranges[l].ids ? ranges[l].ids[code - ranges[l].start] : code)) &
0xffff;
}
return {
charCode: code,
glyphId: gid,
};
}
function compileGlyf(code, cmds, font) {
function moveTo(x, y) {
cmds.push({ cmd: "moveTo", args: [x, y] });
}
function lineTo(x, y) {
cmds.push({ cmd: "lineTo", args: [x, y] });
}
function quadraticCurveTo(xa, ya, x, y) {
cmds.push({ cmd: "quadraticCurveTo", args: [xa, ya, x, y] });
}
var i = 0;
var numberOfContours = ((code[i] << 24) | (code[i + 1] << 16)) >> 16;
var flags;
var x = 0,
y = 0;
i += 10;
if (numberOfContours < 0) {
// composite glyph
do {
flags = (code[i] << 8) | code[i + 1];
var glyphIndex = (code[i + 2] << 8) | code[i + 3];
i += 4;
var arg1, arg2;
if (flags & 0x01) {
arg1 = ((code[i] << 24) | (code[i + 1] << 16)) >> 16;
arg2 = ((code[i + 2] << 24) | (code[i + 3] << 16)) >> 16;
i += 4;
} else {
arg1 = code[i++];
arg2 = code[i++];
}
if (flags & 0x02) {
x = arg1;
y = arg2;
} else {
x = 0;
y = 0; // TODO "they are points" ?
}
var scaleX = 1,
scaleY = 1,
scale01 = 0,
scale10 = 0;
if (flags & 0x08) {
scaleX = scaleY =
((code[i] << 24) | (code[i + 1] << 16)) / 1073741824;
i += 2;
} else if (flags & 0x40) {
scaleX = ((code[i] << 24) | (code[i + 1] << 16)) / 1073741824;
scaleY = ((code[i + 2] << 24) | (code[i + 3] << 16)) / 1073741824;
i += 4;
} else if (flags & 0x80) {
scaleX = ((code[i] << 24) | (code[i + 1] << 16)) / 1073741824;
scale01 = ((code[i + 2] << 24) | (code[i + 3] << 16)) / 1073741824;
scale10 = ((code[i + 4] << 24) | (code[i + 5] << 16)) / 1073741824;
scaleY = ((code[i + 6] << 24) | (code[i + 7] << 16)) / 1073741824;
i += 8;
}
var subglyph = font.glyphs[glyphIndex];
if (subglyph) {
cmds.push({ cmd: "save" });
cmds.push({
cmd: "transform",
args: [scaleX, scale01, scale10, scaleY, x, y],
});
compileGlyf(subglyph, cmds, font);
cmds.push({ cmd: "restore" });
}
} while (flags & 0x20);
} else {
// simple glyph
var endPtsOfContours = [];
var j, jj;
for (j = 0; j < numberOfContours; j++) {
endPtsOfContours.push((code[i] << 8) | code[i + 1]);
i += 2;
}
var instructionLength = (code[i] << 8) | code[i + 1];
i += 2 + instructionLength; // skipping the instructions
var numberOfPoints = endPtsOfContours[endPtsOfContours.length - 1] + 1;
var points = [];
while (points.length < numberOfPoints) {
flags = code[i++];
var repeat = 1;
if (flags & 0x08) {
repeat += code[i++];
}
while (repeat-- > 0) {
points.push({ flags });
}
}
for (j = 0; j < numberOfPoints; j++) {
switch (points[j].flags & 0x12) {
case 0x00:
x += ((code[i] << 24) | (code[i + 1] << 16)) >> 16;
i += 2;
break;
case 0x02:
x -= code[i++];
break;
case 0x12:
x += code[i++];
break;
}
points[j].x = x;
}
for (j = 0; j < numberOfPoints; j++) {
switch (points[j].flags & 0x24) {
case 0x00:
y += ((code[i] << 24) | (code[i + 1] << 16)) >> 16;
i += 2;
break;
case 0x04:
y -= code[i++];
break;
case 0x24:
y += code[i++];
break;
}
points[j].y = y;
}
var startPoint = 0;
for (i = 0; i < numberOfContours; i++) {
var endPoint = endPtsOfContours[i];
// contours might have implicit points, which is located in the middle
// between two neighboring off-curve points
var contour = points.slice(startPoint, endPoint + 1);
if (contour[0].flags & 1) {
contour.push(contour[0]); // using start point at the contour end
} else if (contour[contour.length - 1].flags & 1) {
// first is off-curve point, trying to use one from the end
contour.unshift(contour[contour.length - 1]);
} else {
// start and end are off-curve points, creating implicit one
var p = {
flags: 1,
x: (contour[0].x + contour[contour.length - 1].x) / 2,
y: (contour[0].y + contour[contour.length - 1].y) / 2,
};
contour.unshift(p);
contour.push(p);
}
moveTo(contour[0].x, contour[0].y);
for (j = 1, jj = contour.length; j < jj; j++) {
if (contour[j].flags & 1) {
lineTo(contour[j].x, contour[j].y);
} else if (contour[j + 1].flags & 1) {
quadraticCurveTo(
contour[j].x,
contour[j].y,
contour[j + 1].x,
contour[j + 1].y
);
j++;
} else {
quadraticCurveTo(
contour[j].x,
contour[j].y,
(contour[j].x + contour[j + 1].x) / 2,
(contour[j].y + contour[j + 1].y) / 2
);
}
}
startPoint = endPoint + 1;
}
}
}
function compileCharString(code, cmds, font, glyphId) {
var stack = [];
var x = 0,
y = 0;
var stems = 0;
function moveTo(x, y) {
cmds.push({ cmd: "moveTo", args: [x, y] });
}
function lineTo(x, y) {
cmds.push({ cmd: "lineTo", args: [x, y] });
}
function bezierCurveTo(x1, y1, x2, y2, x, y) {
cmds.push({ cmd: "bezierCurveTo", args: [x1, y1, x2, y2, x, y] });
}
function parse(code) {
var i = 0;
while (i < code.length) {
var stackClean = false;
var v = code[i++];
var xa, xb, ya, yb, y1, y2, y3, n, subrCode;
switch (v) {
case 1: // hstem
stems += stack.length >> 1;
stackClean = true;
break;
case 3: // vstem
stems += stack.length >> 1;
stackClean = true;
break;
case 4: // vmoveto
y += stack.pop();
moveTo(x, y);
stackClean = true;
break;
case 5: // rlineto
while (stack.length > 0) {
x += stack.shift();
y += stack.shift();
lineTo(x, y);
}
break;
case 6: // hlineto
while (stack.length > 0) {
x += stack.shift();
lineTo(x, y);
if (stack.length === 0) {
break;
}
y += stack.shift();
lineTo(x, y);
}
break;
case 7: // vlineto
while (stack.length > 0) {
y += stack.shift();
lineTo(x, y);
if (stack.length === 0) {
break;
}
x += stack.shift();
lineTo(x, y);
}
break;
case 8: // rrcurveto
while (stack.length > 0) {
xa = x + stack.shift();
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb + stack.shift();
y = yb + stack.shift();
bezierCurveTo(xa, ya, xb, yb, x, y);
}
break;
case 10: // callsubr
n = stack.pop();
subrCode = null;
if (font.isCFFCIDFont) {
let fdIndex = font.fdSelect.getFDIndex(glyphId);
if (fdIndex >= 0 && fdIndex < font.fdArray.length) {
let fontDict = font.fdArray[fdIndex],
subrs;
if (fontDict.privateDict && fontDict.privateDict.subrsIndex) {
subrs = fontDict.privateDict.subrsIndex.objects;
}
if (subrs) {
let numSubrs = subrs.length;
// Add subroutine bias.
n += numSubrs < 1240 ? 107 : numSubrs < 33900 ? 1131 : 32768;
subrCode = subrs[n];
}
} else {
warn("Invalid fd index for glyph index.");
}
} else {
subrCode = font.subrs[n + font.subrsBias];
}
if (subrCode) {
parse(subrCode);
}
break;
case 11: // return
return;
case 12:
v = code[i++];
switch (v) {
case 34: // flex
xa = x + stack.shift();
xb = xa + stack.shift();
y1 = y + stack.shift();
x = xb + stack.shift();
bezierCurveTo(xa, y, xb, y1, x, y1);
xa = x + stack.shift();
xb = xa + stack.shift();
x = xb + stack.shift();
bezierCurveTo(xa, y1, xb, y, x, y);
break;
case 35: // flex
xa = x + stack.shift();
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb + stack.shift();
y = yb + stack.shift();
bezierCurveTo(xa, ya, xb, yb, x, y);
xa = x + stack.shift();
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb + stack.shift();
y = yb + stack.shift();
bezierCurveTo(xa, ya, xb, yb, x, y);
stack.pop(); // fd
break;
case 36: // hflex1
xa = x + stack.shift();
y1 = y + stack.shift();
xb = xa + stack.shift();
y2 = y1 + stack.shift();
x = xb + stack.shift();
bezierCurveTo(xa, y1, xb, y2, x, y2);
xa = x + stack.shift();
xb = xa + stack.shift();
y3 = y2 + stack.shift();
x = xb + stack.shift();
bezierCurveTo(xa, y2, xb, y3, x, y);
break;
case 37: // flex1
var x0 = x,
y0 = y;
xa = x + stack.shift();
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb + stack.shift();
y = yb + stack.shift();
bezierCurveTo(xa, ya, xb, yb, x, y);
xa = x + stack.shift();
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb;
y = yb;
if (Math.abs(x - x0) > Math.abs(y - y0)) {
x += stack.shift();
} else {
y += stack.shift();
}
bezierCurveTo(xa, ya, xb, yb, x, y);
break;
default:
throw new FormatError(`unknown operator: 12 ${v}`);
}
break;
case 14: // endchar
if (stack.length >= 4) {
var achar = stack.pop();
var bchar = stack.pop();
y = stack.pop();
x = stack.pop();
cmds.push({ cmd: "save" });
cmds.push({ cmd: "translate", args: [x, y] });
var cmap = lookupCmap(
font.cmap,
String.fromCharCode(font.glyphNameMap[StandardEncoding[achar]])
);
compileCharString(
font.glyphs[cmap.glyphId],
cmds,
font,
cmap.glyphId
);
cmds.push({ cmd: "restore" });
cmap = lookupCmap(
font.cmap,
String.fromCharCode(font.glyphNameMap[StandardEncoding[bchar]])
);
compileCharString(
font.glyphs[cmap.glyphId],
cmds,
font,
cmap.glyphId
);
}
return;
case 18: // hstemhm
stems += stack.length >> 1;
stackClean = true;
break;
case 19: // hintmask
stems += stack.length >> 1;
i += (stems + 7) >> 3;
stackClean = true;
break;
case 20: // cntrmask
stems += stack.length >> 1;
i += (stems + 7) >> 3;
stackClean = true;
break;
case 21: // rmoveto
y += stack.pop();
x += stack.pop();
moveTo(x, y);
stackClean = true;
break;
case 22: // hmoveto
x += stack.pop();
moveTo(x, y);
stackClean = true;
break;
case 23: // vstemhm
stems += stack.length >> 1;
stackClean = true;
break;
case 24: // rcurveline
while (stack.length > 2) {
xa = x + stack.shift();
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb + stack.shift();
y = yb + stack.shift();
bezierCurveTo(xa, ya, xb, yb, x, y);
}
x += stack.shift();
y += stack.shift();
lineTo(x, y);
break;
case 25: // rlinecurve
while (stack.length > 6) {
x += stack.shift();
y += stack.shift();
lineTo(x, y);
}
xa = x + stack.shift();
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb + stack.shift();
y = yb + stack.shift();
bezierCurveTo(xa, ya, xb, yb, x, y);
break;
case 26: // vvcurveto
if (stack.length % 2) {
x += stack.shift();
}
while (stack.length > 0) {
xa = x;
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb;
y = yb + stack.shift();
bezierCurveTo(xa, ya, xb, yb, x, y);
}
break;
case 27: // hhcurveto
if (stack.length % 2) {
y += stack.shift();
}
while (stack.length > 0) {
xa = x + stack.shift();
ya = y;
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb + stack.shift();
y = yb;
bezierCurveTo(xa, ya, xb, yb, x, y);
}
break;
case 28:
stack.push(((code[i] << 24) | (code[i + 1] << 16)) >> 16);
i += 2;
break;
case 29: // callgsubr
n = stack.pop() + font.gsubrsBias;
subrCode = font.gsubrs[n];
if (subrCode) {
parse(subrCode);
}
break;
case 30: // vhcurveto
while (stack.length > 0) {
xa = x;
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb + stack.shift();
y = yb + (stack.length === 1 ? stack.shift() : 0);
bezierCurveTo(xa, ya, xb, yb, x, y);
if (stack.length === 0) {
break;
}
xa = x + stack.shift();
ya = y;
xb = xa + stack.shift();
yb = ya + stack.shift();
y = yb + stack.shift();
x = xb + (stack.length === 1 ? stack.shift() : 0);
bezierCurveTo(xa, ya, xb, yb, x, y);
}
break;
case 31: // hvcurveto
while (stack.length > 0) {
xa = x + stack.shift();
ya = y;
xb = xa + stack.shift();
yb = ya + stack.shift();
y = yb + stack.shift();
x = xb + (stack.length === 1 ? stack.shift() : 0);
bezierCurveTo(xa, ya, xb, yb, x, y);
if (stack.length === 0) {
break;
}
xa = x;
ya = y + stack.shift();
xb = xa + stack.shift();
yb = ya + stack.shift();
x = xb + stack.shift();
y = yb + (stack.length === 1 ? stack.shift() : 0);
bezierCurveTo(xa, ya, xb, yb, x, y);
}
break;
default:
if (v < 32) {
throw new FormatError(`unknown operator: ${v}`);
}
if (v < 247) {
stack.push(v - 139);
} else if (v < 251) {
stack.push((v - 247) * 256 + code[i++] + 108);
} else if (v < 255) {
stack.push(-(v - 251) * 256 - code[i++] - 108);
} else {
stack.push(
((code[i] << 24) |
(code[i + 1] << 16) |
(code[i + 2] << 8) |
code[i + 3]) /
65536
);
i += 4;
}
break;
}
if (stackClean) {
stack.length = 0;
}
}
}
parse(code);
}
const NOOP = [];
class CompiledFont {
constructor(fontMatrix) {
if (this.constructor === CompiledFont) {
unreachable("Cannot initialize CompiledFont.");
}
this.fontMatrix = fontMatrix;
this.compiledGlyphs = Object.create(null);
this.compiledCharCodeToGlyphId = Object.create(null);
}
getPathJs(unicode) {
const cmap = lookupCmap(this.cmap, unicode);
let fn = this.compiledGlyphs[cmap.glyphId];
if (!fn) {
fn = this.compileGlyph(this.glyphs[cmap.glyphId], cmap.glyphId);
this.compiledGlyphs[cmap.glyphId] = fn;
}
if (this.compiledCharCodeToGlyphId[cmap.charCode] === undefined) {
this.compiledCharCodeToGlyphId[cmap.charCode] = cmap.glyphId;
}
return fn;
}
compileGlyph(code, glyphId) {
if (!code || code.length === 0 || code[0] === 14) {
return NOOP;
}
let fontMatrix = this.fontMatrix;
if (this.isCFFCIDFont) {
// Top DICT's FontMatrix can be ignored because CFFCompiler always
// removes it and copies to FDArray DICTs.
let fdIndex = this.fdSelect.getFDIndex(glyphId);
if (fdIndex >= 0 && fdIndex < this.fdArray.length) {
let fontDict = this.fdArray[fdIndex];
fontMatrix = fontDict.getByName("FontMatrix") || FONT_IDENTITY_MATRIX;
} else {
warn("Invalid fd index for glyph index.");
}
}
const cmds = [];
cmds.push({ cmd: "save" });
cmds.push({ cmd: "transform", args: fontMatrix.slice() });
cmds.push({ cmd: "scale", args: ["size", "-size"] });
this.compileGlyphImpl(code, cmds, glyphId);
cmds.push({ cmd: "restore" });
return cmds;
}
compileGlyphImpl() {
unreachable("Children classes should implement this.");
}
hasBuiltPath(unicode) {
const cmap = lookupCmap(this.cmap, unicode);
return (
this.compiledGlyphs[cmap.glyphId] !== undefined &&
this.compiledCharCodeToGlyphId[cmap.charCode] !== undefined
);
}
}
class TrueTypeCompiled extends CompiledFont {
constructor(glyphs, cmap, fontMatrix) {
super(fontMatrix || [0.000488, 0, 0, 0.000488, 0, 0]);
this.glyphs = glyphs;
this.cmap = cmap;
}
compileGlyphImpl(code, cmds) {
compileGlyf(code, cmds, this);
}
}
class Type2Compiled extends CompiledFont {
constructor(cffInfo, cmap, fontMatrix, glyphNameMap) {
super(fontMatrix || [0.001, 0, 0, 0.001, 0, 0]);
this.glyphs = cffInfo.glyphs;
this.gsubrs = cffInfo.gsubrs || [];
this.subrs = cffInfo.subrs || [];
this.cmap = cmap;
this.glyphNameMap = glyphNameMap || getGlyphsUnicode();
this.gsubrsBias =
this.gsubrs.length < 1240
? 107
: this.gsubrs.length < 33900
? 1131
: 32768;
this.subrsBias =
this.subrs.length < 1240
? 107
: this.subrs.length < 33900
? 1131
: 32768;
this.isCFFCIDFont = cffInfo.isCFFCIDFont;
this.fdSelect = cffInfo.fdSelect;
this.fdArray = cffInfo.fdArray;
}
compileGlyphImpl(code, cmds, glyphId) {
compileCharString(code, cmds, this, glyphId);
}
}
return {
create: function FontRendererFactory_create(font, seacAnalysisEnabled) {
var data = new Uint8Array(font.data);
var cmap, glyf, loca, cff, indexToLocFormat, unitsPerEm;
var numTables = getUshort(data, 4);
for (var i = 0, p = 12; i < numTables; i++, p += 16) {
var tag = bytesToString(data.subarray(p, p + 4));
var offset = getLong(data, p + 8);
var length = getLong(data, p + 12);
switch (tag) {
case "cmap":
cmap = parseCmap(data, offset, offset + length);
break;
case "glyf":
glyf = data.subarray(offset, offset + length);
break;
case "loca":
loca = data.subarray(offset, offset + length);
break;
case "head":
unitsPerEm = getUshort(data, offset + 18);
indexToLocFormat = getUshort(data, offset + 50);
break;
case "CFF ":
cff = parseCff(data, offset, offset + length, seacAnalysisEnabled);
break;
}
}
if (glyf) {
var fontMatrix = !unitsPerEm
? font.fontMatrix
: [1 / unitsPerEm, 0, 0, 1 / unitsPerEm, 0, 0];
return new TrueTypeCompiled(
parseGlyfTable(glyf, loca, indexToLocFormat),
cmap,
fontMatrix
);
}
return new Type2Compiled(cff, cmap, font.fontMatrix, font.glyphNameMap);
},
};
})();
export { FontRendererFactory };
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