1496 lines
44 KiB
JavaScript
1496 lines
44 KiB
JavaScript
/* 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.
|
|
*/
|
|
/* globals __non_webpack_require__ */
|
|
/* eslint no-var: error */
|
|
|
|
import {
|
|
createObjectURL, FONT_IDENTITY_MATRIX, IDENTITY_MATRIX, ImageKind, isNum, OPS,
|
|
TextRenderingMode, Util, warn
|
|
} from '../shared/util';
|
|
import { DOMSVGFactory } from './display_utils';
|
|
import isNodeJS from '../shared/is_node';
|
|
|
|
let SVGGraphics = function() {
|
|
throw new Error('Not implemented: SVGGraphics');
|
|
};
|
|
|
|
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
|
|
|
|
const SVG_DEFAULTS = {
|
|
fontStyle: 'normal',
|
|
fontWeight: 'normal',
|
|
fillColor: '#000000',
|
|
};
|
|
const XML_NS = 'http://www.w3.org/XML/1998/namespace';
|
|
const XLINK_NS = 'http://www.w3.org/1999/xlink';
|
|
const LINE_CAP_STYLES = ['butt', 'round', 'square'];
|
|
const LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
|
|
|
|
const convertImgDataToPng = (function() {
|
|
const PNG_HEADER =
|
|
new Uint8Array([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]);
|
|
const CHUNK_WRAPPER_SIZE = 12;
|
|
|
|
const crcTable = new Int32Array(256);
|
|
for (let i = 0; i < 256; i++) {
|
|
let c = i;
|
|
for (let h = 0; h < 8; h++) {
|
|
if (c & 1) {
|
|
c = 0xedB88320 ^ ((c >> 1) & 0x7fffffff);
|
|
} else {
|
|
c = (c >> 1) & 0x7fffffff;
|
|
}
|
|
}
|
|
crcTable[i] = c;
|
|
}
|
|
|
|
function crc32(data, start, end) {
|
|
let crc = -1;
|
|
for (let i = start; i < end; i++) {
|
|
const a = (crc ^ data[i]) & 0xff;
|
|
const b = crcTable[a];
|
|
crc = (crc >>> 8) ^ b;
|
|
}
|
|
return crc ^ -1;
|
|
}
|
|
|
|
function writePngChunk(type, body, data, offset) {
|
|
let p = offset;
|
|
const len = body.length;
|
|
|
|
data[p] = len >> 24 & 0xff;
|
|
data[p + 1] = len >> 16 & 0xff;
|
|
data[p + 2] = len >> 8 & 0xff;
|
|
data[p + 3] = len & 0xff;
|
|
p += 4;
|
|
|
|
data[p] = type.charCodeAt(0) & 0xff;
|
|
data[p + 1] = type.charCodeAt(1) & 0xff;
|
|
data[p + 2] = type.charCodeAt(2) & 0xff;
|
|
data[p + 3] = type.charCodeAt(3) & 0xff;
|
|
p += 4;
|
|
|
|
data.set(body, p);
|
|
p += body.length;
|
|
|
|
const crc = crc32(data, offset + 4, p);
|
|
data[p] = crc >> 24 & 0xff;
|
|
data[p + 1] = crc >> 16 & 0xff;
|
|
data[p + 2] = crc >> 8 & 0xff;
|
|
data[p + 3] = crc & 0xff;
|
|
}
|
|
|
|
function adler32(data, start, end) {
|
|
let a = 1;
|
|
let b = 0;
|
|
for (let i = start; i < end; ++i) {
|
|
a = (a + (data[i] & 0xff)) % 65521;
|
|
b = (b + a) % 65521;
|
|
}
|
|
return (b << 16) | a;
|
|
}
|
|
|
|
/**
|
|
* @param {Uint8Array} literals The input data.
|
|
* @returns {Uint8Array} The DEFLATE-compressed data stream in zlib format.
|
|
* This is the required format for compressed streams in the PNG format:
|
|
* http://www.libpng.org/pub/png/spec/1.2/PNG-Compression.html
|
|
*/
|
|
function deflateSync(literals) {
|
|
if (!isNodeJS()) {
|
|
// zlib is certainly not available outside of Node.js. We can either use
|
|
// the pako library for client-side DEFLATE compression, or use the canvas
|
|
// API of the browser to obtain a more optimal PNG file.
|
|
return deflateSyncUncompressed(literals);
|
|
}
|
|
try {
|
|
// NOTE: This implementation is far from perfect, but already way better
|
|
// than not applying any compression.
|
|
//
|
|
// A better algorithm will try to choose a good predictor/filter and
|
|
// then choose a suitable zlib compression strategy (e.g. 3,Z_RLE).
|
|
//
|
|
// Node v0.11.12 zlib.deflateSync is introduced (and returns a Buffer).
|
|
// Node v3.0.0 Buffer inherits from Uint8Array.
|
|
// Node v8.0.0 zlib.deflateSync accepts Uint8Array as input.
|
|
let input;
|
|
// eslint-disable-next-line no-undef
|
|
if (parseInt(process.versions.node) >= 8) {
|
|
input = literals;
|
|
} else {
|
|
// eslint-disable-next-line no-undef
|
|
input = new Buffer(literals);
|
|
}
|
|
const output = __non_webpack_require__('zlib')
|
|
.deflateSync(input, { level: 9, });
|
|
return output instanceof Uint8Array ? output : new Uint8Array(output);
|
|
} catch (e) {
|
|
warn('Not compressing PNG because zlib.deflateSync is unavailable: ' + e);
|
|
}
|
|
|
|
return deflateSyncUncompressed(literals);
|
|
}
|
|
|
|
// An implementation of DEFLATE with compression level 0 (Z_NO_COMPRESSION).
|
|
function deflateSyncUncompressed(literals) {
|
|
let len = literals.length;
|
|
const maxBlockLength = 0xFFFF;
|
|
|
|
const deflateBlocks = Math.ceil(len / maxBlockLength);
|
|
const idat = new Uint8Array(2 + len + deflateBlocks * 5 + 4);
|
|
let pi = 0;
|
|
idat[pi++] = 0x78; // compression method and flags
|
|
idat[pi++] = 0x9c; // flags
|
|
|
|
let pos = 0;
|
|
while (len > maxBlockLength) {
|
|
// writing non-final DEFLATE blocks type 0 and length of 65535
|
|
idat[pi++] = 0x00;
|
|
idat[pi++] = 0xff;
|
|
idat[pi++] = 0xff;
|
|
idat[pi++] = 0x00;
|
|
idat[pi++] = 0x00;
|
|
idat.set(literals.subarray(pos, pos + maxBlockLength), pi);
|
|
pi += maxBlockLength;
|
|
pos += maxBlockLength;
|
|
len -= maxBlockLength;
|
|
}
|
|
|
|
// writing non-final DEFLATE blocks type 0
|
|
idat[pi++] = 0x01;
|
|
idat[pi++] = len & 0xff;
|
|
idat[pi++] = len >> 8 & 0xff;
|
|
idat[pi++] = (~len & 0xffff) & 0xff;
|
|
idat[pi++] = (~len & 0xffff) >> 8 & 0xff;
|
|
idat.set(literals.subarray(pos), pi);
|
|
pi += literals.length - pos;
|
|
|
|
const adler = adler32(literals, 0, literals.length); // checksum
|
|
idat[pi++] = adler >> 24 & 0xff;
|
|
idat[pi++] = adler >> 16 & 0xff;
|
|
idat[pi++] = adler >> 8 & 0xff;
|
|
idat[pi++] = adler & 0xff;
|
|
return idat;
|
|
}
|
|
|
|
function encode(imgData, kind, forceDataSchema, isMask) {
|
|
const width = imgData.width;
|
|
const height = imgData.height;
|
|
let bitDepth, colorType, lineSize;
|
|
const bytes = imgData.data;
|
|
|
|
switch (kind) {
|
|
case ImageKind.GRAYSCALE_1BPP:
|
|
colorType = 0;
|
|
bitDepth = 1;
|
|
lineSize = (width + 7) >> 3;
|
|
break;
|
|
case ImageKind.RGB_24BPP:
|
|
colorType = 2;
|
|
bitDepth = 8;
|
|
lineSize = width * 3;
|
|
break;
|
|
case ImageKind.RGBA_32BPP:
|
|
colorType = 6;
|
|
bitDepth = 8;
|
|
lineSize = width * 4;
|
|
break;
|
|
default:
|
|
throw new Error('invalid format');
|
|
}
|
|
|
|
// prefix every row with predictor 0
|
|
const literals = new Uint8Array((1 + lineSize) * height);
|
|
let offsetLiterals = 0, offsetBytes = 0;
|
|
for (let y = 0; y < height; ++y) {
|
|
literals[offsetLiterals++] = 0; // no prediction
|
|
literals.set(bytes.subarray(offsetBytes, offsetBytes + lineSize),
|
|
offsetLiterals);
|
|
offsetBytes += lineSize;
|
|
offsetLiterals += lineSize;
|
|
}
|
|
|
|
if (kind === ImageKind.GRAYSCALE_1BPP && isMask) {
|
|
// inverting for image masks
|
|
offsetLiterals = 0;
|
|
for (let y = 0; y < height; y++) {
|
|
offsetLiterals++; // skipping predictor
|
|
for (let i = 0; i < lineSize; i++) {
|
|
literals[offsetLiterals++] ^= 0xFF;
|
|
}
|
|
}
|
|
}
|
|
|
|
const ihdr = new Uint8Array([
|
|
width >> 24 & 0xff,
|
|
width >> 16 & 0xff,
|
|
width >> 8 & 0xff,
|
|
width & 0xff,
|
|
height >> 24 & 0xff,
|
|
height >> 16 & 0xff,
|
|
height >> 8 & 0xff,
|
|
height & 0xff,
|
|
bitDepth, // bit depth
|
|
colorType, // color type
|
|
0x00, // compression method
|
|
0x00, // filter method
|
|
0x00 // interlace method
|
|
]);
|
|
const idat = deflateSync(literals);
|
|
|
|
// PNG consists of: header, IHDR+data, IDAT+data, and IEND.
|
|
const pngLength = PNG_HEADER.length + (CHUNK_WRAPPER_SIZE * 3) +
|
|
ihdr.length + idat.length;
|
|
const data = new Uint8Array(pngLength);
|
|
let offset = 0;
|
|
data.set(PNG_HEADER, offset);
|
|
offset += PNG_HEADER.length;
|
|
writePngChunk('IHDR', ihdr, data, offset);
|
|
offset += CHUNK_WRAPPER_SIZE + ihdr.length;
|
|
writePngChunk('IDATA', idat, data, offset);
|
|
offset += CHUNK_WRAPPER_SIZE + idat.length;
|
|
writePngChunk('IEND', new Uint8Array(0), data, offset);
|
|
|
|
return createObjectURL(data, 'image/png', forceDataSchema);
|
|
}
|
|
|
|
return function convertImgDataToPng(imgData, forceDataSchema, isMask) {
|
|
const kind = (imgData.kind === undefined ?
|
|
ImageKind.GRAYSCALE_1BPP : imgData.kind);
|
|
return encode(imgData, kind, forceDataSchema, isMask);
|
|
};
|
|
})();
|
|
|
|
class SVGExtraState {
|
|
constructor() {
|
|
this.fontSizeScale = 1;
|
|
this.fontWeight = SVG_DEFAULTS.fontWeight;
|
|
this.fontSize = 0;
|
|
|
|
this.textMatrix = IDENTITY_MATRIX;
|
|
this.fontMatrix = FONT_IDENTITY_MATRIX;
|
|
this.leading = 0;
|
|
this.textRenderingMode = TextRenderingMode.FILL;
|
|
this.textMatrixScale = 1;
|
|
|
|
// Current point (in user coordinates)
|
|
this.x = 0;
|
|
this.y = 0;
|
|
|
|
// Start of text line (in text coordinates)
|
|
this.lineX = 0;
|
|
this.lineY = 0;
|
|
|
|
// Character and word spacing
|
|
this.charSpacing = 0;
|
|
this.wordSpacing = 0;
|
|
this.textHScale = 1;
|
|
this.textRise = 0;
|
|
|
|
// Default foreground and background colors
|
|
this.fillColor = SVG_DEFAULTS.fillColor;
|
|
this.strokeColor = '#000000';
|
|
|
|
this.fillAlpha = 1;
|
|
this.strokeAlpha = 1;
|
|
this.lineWidth = 1;
|
|
this.lineJoin = '';
|
|
this.lineCap = '';
|
|
this.miterLimit = 0;
|
|
|
|
this.dashArray = [];
|
|
this.dashPhase = 0;
|
|
|
|
this.dependencies = [];
|
|
|
|
// Clipping
|
|
this.activeClipUrl = null;
|
|
this.clipGroup = null;
|
|
|
|
this.maskId = '';
|
|
}
|
|
|
|
clone() {
|
|
return Object.create(this);
|
|
}
|
|
|
|
setCurrentPoint(x, y) {
|
|
this.x = x;
|
|
this.y = y;
|
|
}
|
|
}
|
|
|
|
// eslint-disable-next-line no-inner-declarations
|
|
function opListToTree(opList) {
|
|
let opTree = [];
|
|
const tmp = [];
|
|
|
|
for (const opListElement of opList) {
|
|
if (opListElement.fn === 'save') {
|
|
opTree.push({ 'fnId': 92, 'fn': 'group', 'items': [], });
|
|
tmp.push(opTree);
|
|
opTree = opTree[opTree.length - 1].items;
|
|
continue;
|
|
}
|
|
|
|
if (opListElement.fn === 'restore') {
|
|
opTree = tmp.pop();
|
|
} else {
|
|
opTree.push(opListElement);
|
|
}
|
|
}
|
|
return opTree;
|
|
}
|
|
|
|
/**
|
|
* Format a float number as a string.
|
|
*
|
|
* @param value {number} - The float number to format.
|
|
* @returns {string}
|
|
*/
|
|
// eslint-disable-next-line no-inner-declarations
|
|
function pf(value) {
|
|
if (Number.isInteger(value)) {
|
|
return value.toString();
|
|
}
|
|
const s = value.toFixed(10);
|
|
let i = s.length - 1;
|
|
if (s[i] !== '0') {
|
|
return s;
|
|
}
|
|
|
|
// Remove trailing zeros.
|
|
do {
|
|
i--;
|
|
} while (s[i] === '0');
|
|
return s.substring(0, s[i] === '.' ? i : i + 1);
|
|
}
|
|
|
|
/**
|
|
* Format a transform matrix as a string. The standard rotation, scale and
|
|
* translation matrices are replaced by their shorter forms, and for
|
|
* identity matrices an empty string is returned to save memory.
|
|
*
|
|
* @param m {Array} - The transform matrix to format.
|
|
* @returns {string}
|
|
*/
|
|
// eslint-disable-next-line no-inner-declarations
|
|
function pm(m) {
|
|
if (m[4] === 0 && m[5] === 0) {
|
|
if (m[1] === 0 && m[2] === 0) {
|
|
if (m[0] === 1 && m[3] === 1) {
|
|
return '';
|
|
}
|
|
return `scale(${pf(m[0])} ${pf(m[3])})`;
|
|
}
|
|
if (m[0] === m[3] && m[1] === -m[2]) {
|
|
const a = Math.acos(m[0]) * 180 / Math.PI;
|
|
return `rotate(${pf(a)})`;
|
|
}
|
|
} else {
|
|
if (m[0] === 1 && m[1] === 0 && m[2] === 0 && m[3] === 1) {
|
|
return `translate(${pf(m[4])} ${pf(m[5])})`;
|
|
}
|
|
}
|
|
return `matrix(${pf(m[0])} ${pf(m[1])} ${pf(m[2])} ${pf(m[3])} ${pf(m[4])} ` +
|
|
`${pf(m[5])})`;
|
|
}
|
|
|
|
// The counts below are relevant for all pages, so they have to be global
|
|
// instead of being members of `SVGGraphics` (which is recreated for
|
|
// each page).
|
|
let clipCount = 0;
|
|
let maskCount = 0;
|
|
let shadingCount = 0;
|
|
|
|
SVGGraphics = class SVGGraphics {
|
|
constructor(commonObjs, objs, forceDataSchema) {
|
|
this.svgFactory = new DOMSVGFactory();
|
|
|
|
this.current = new SVGExtraState();
|
|
this.transformMatrix = IDENTITY_MATRIX; // Graphics state matrix
|
|
this.transformStack = [];
|
|
this.extraStack = [];
|
|
this.commonObjs = commonObjs;
|
|
this.objs = objs;
|
|
this.pendingClip = null;
|
|
this.pendingEOFill = false;
|
|
|
|
this.embedFonts = false;
|
|
this.embeddedFonts = Object.create(null);
|
|
this.cssStyle = null;
|
|
this.forceDataSchema = !!forceDataSchema;
|
|
|
|
// In `src/shared/util.js` the operator names are mapped to IDs.
|
|
// The list below represents the reverse of that, i.e., it maps IDs
|
|
// to operator names.
|
|
this._operatorIdMapping = [];
|
|
for (const op in OPS) {
|
|
this._operatorIdMapping[OPS[op]] = op;
|
|
}
|
|
}
|
|
|
|
save() {
|
|
this.transformStack.push(this.transformMatrix);
|
|
const old = this.current;
|
|
this.extraStack.push(old);
|
|
this.current = old.clone();
|
|
}
|
|
|
|
restore() {
|
|
this.transformMatrix = this.transformStack.pop();
|
|
this.current = this.extraStack.pop();
|
|
this.pendingClip = null;
|
|
this.tgrp = null;
|
|
}
|
|
|
|
group(items) {
|
|
this.save();
|
|
this.executeOpTree(items);
|
|
this.restore();
|
|
}
|
|
|
|
loadDependencies(operatorList) {
|
|
const fnArray = operatorList.fnArray;
|
|
const argsArray = operatorList.argsArray;
|
|
|
|
for (let i = 0, ii = fnArray.length; i < ii; i++) {
|
|
if (fnArray[i] !== OPS.dependency) {
|
|
continue;
|
|
}
|
|
|
|
for (const obj of argsArray[i]) {
|
|
const objsPool = obj.startsWith('g_') ? this.commonObjs : this.objs;
|
|
const promise = new Promise((resolve) => {
|
|
objsPool.get(obj, resolve);
|
|
});
|
|
this.current.dependencies.push(promise);
|
|
}
|
|
}
|
|
return Promise.all(this.current.dependencies);
|
|
}
|
|
|
|
transform(a, b, c, d, e, f) {
|
|
const transformMatrix = [a, b, c, d, e, f];
|
|
this.transformMatrix = Util.transform(this.transformMatrix,
|
|
transformMatrix);
|
|
this.tgrp = null;
|
|
}
|
|
|
|
getSVG(operatorList, viewport) {
|
|
this.viewport = viewport;
|
|
|
|
const svgElement = this._initialize(viewport);
|
|
return this.loadDependencies(operatorList).then(() => {
|
|
this.transformMatrix = IDENTITY_MATRIX;
|
|
this.executeOpTree(this.convertOpList(operatorList));
|
|
return svgElement;
|
|
});
|
|
}
|
|
|
|
convertOpList(operatorList) {
|
|
const operatorIdMapping = this._operatorIdMapping;
|
|
const argsArray = operatorList.argsArray;
|
|
const fnArray = operatorList.fnArray;
|
|
const opList = [];
|
|
for (let i = 0, ii = fnArray.length; i < ii; i++) {
|
|
const fnId = fnArray[i];
|
|
opList.push({
|
|
'fnId': fnId,
|
|
'fn': operatorIdMapping[fnId],
|
|
'args': argsArray[i],
|
|
});
|
|
}
|
|
return opListToTree(opList);
|
|
}
|
|
|
|
executeOpTree(opTree) {
|
|
for (const opTreeElement of opTree) {
|
|
const fn = opTreeElement.fn;
|
|
const fnId = opTreeElement.fnId;
|
|
const args = opTreeElement.args;
|
|
|
|
switch (fnId | 0) {
|
|
case OPS.beginText:
|
|
this.beginText();
|
|
break;
|
|
case OPS.dependency:
|
|
// Handled in `loadDependencies`, so no warning should be shown.
|
|
break;
|
|
case OPS.setLeading:
|
|
this.setLeading(args);
|
|
break;
|
|
case OPS.setLeadingMoveText:
|
|
this.setLeadingMoveText(args[0], args[1]);
|
|
break;
|
|
case OPS.setFont:
|
|
this.setFont(args);
|
|
break;
|
|
case OPS.showText:
|
|
this.showText(args[0]);
|
|
break;
|
|
case OPS.showSpacedText:
|
|
this.showText(args[0]);
|
|
break;
|
|
case OPS.endText:
|
|
this.endText();
|
|
break;
|
|
case OPS.moveText:
|
|
this.moveText(args[0], args[1]);
|
|
break;
|
|
case OPS.setCharSpacing:
|
|
this.setCharSpacing(args[0]);
|
|
break;
|
|
case OPS.setWordSpacing:
|
|
this.setWordSpacing(args[0]);
|
|
break;
|
|
case OPS.setHScale:
|
|
this.setHScale(args[0]);
|
|
break;
|
|
case OPS.setTextMatrix:
|
|
this.setTextMatrix(args[0], args[1], args[2],
|
|
args[3], args[4], args[5]);
|
|
break;
|
|
case OPS.setTextRise:
|
|
this.setTextRise(args[0]);
|
|
break;
|
|
case OPS.setTextRenderingMode:
|
|
this.setTextRenderingMode(args[0]);
|
|
break;
|
|
case OPS.setLineWidth:
|
|
this.setLineWidth(args[0]);
|
|
break;
|
|
case OPS.setLineJoin:
|
|
this.setLineJoin(args[0]);
|
|
break;
|
|
case OPS.setLineCap:
|
|
this.setLineCap(args[0]);
|
|
break;
|
|
case OPS.setMiterLimit:
|
|
this.setMiterLimit(args[0]);
|
|
break;
|
|
case OPS.setFillRGBColor:
|
|
this.setFillRGBColor(args[0], args[1], args[2]);
|
|
break;
|
|
case OPS.setStrokeRGBColor:
|
|
this.setStrokeRGBColor(args[0], args[1], args[2]);
|
|
break;
|
|
case OPS.setStrokeColorN:
|
|
this.setStrokeColorN(args);
|
|
break;
|
|
case OPS.setFillColorN:
|
|
this.setFillColorN(args);
|
|
break;
|
|
case OPS.shadingFill:
|
|
this.shadingFill(args[0]);
|
|
break;
|
|
case OPS.setDash:
|
|
this.setDash(args[0], args[1]);
|
|
break;
|
|
case OPS.setRenderingIntent:
|
|
this.setRenderingIntent(args[0]);
|
|
break;
|
|
case OPS.setFlatness:
|
|
this.setFlatness(args[0]);
|
|
break;
|
|
case OPS.setGState:
|
|
this.setGState(args[0]);
|
|
break;
|
|
case OPS.fill:
|
|
this.fill();
|
|
break;
|
|
case OPS.eoFill:
|
|
this.eoFill();
|
|
break;
|
|
case OPS.stroke:
|
|
this.stroke();
|
|
break;
|
|
case OPS.fillStroke:
|
|
this.fillStroke();
|
|
break;
|
|
case OPS.eoFillStroke:
|
|
this.eoFillStroke();
|
|
break;
|
|
case OPS.clip:
|
|
this.clip('nonzero');
|
|
break;
|
|
case OPS.eoClip:
|
|
this.clip('evenodd');
|
|
break;
|
|
case OPS.paintSolidColorImageMask:
|
|
this.paintSolidColorImageMask();
|
|
break;
|
|
case OPS.paintJpegXObject:
|
|
this.paintJpegXObject(args[0], args[1], args[2]);
|
|
break;
|
|
case OPS.paintImageXObject:
|
|
this.paintImageXObject(args[0]);
|
|
break;
|
|
case OPS.paintInlineImageXObject:
|
|
this.paintInlineImageXObject(args[0]);
|
|
break;
|
|
case OPS.paintImageMaskXObject:
|
|
this.paintImageMaskXObject(args[0]);
|
|
break;
|
|
case OPS.paintFormXObjectBegin:
|
|
this.paintFormXObjectBegin(args[0], args[1]);
|
|
break;
|
|
case OPS.paintFormXObjectEnd:
|
|
this.paintFormXObjectEnd();
|
|
break;
|
|
case OPS.closePath:
|
|
this.closePath();
|
|
break;
|
|
case OPS.closeStroke:
|
|
this.closeStroke();
|
|
break;
|
|
case OPS.closeFillStroke:
|
|
this.closeFillStroke();
|
|
break;
|
|
case OPS.closeEOFillStroke:
|
|
this.closeEOFillStroke();
|
|
break;
|
|
case OPS.nextLine:
|
|
this.nextLine();
|
|
break;
|
|
case OPS.transform:
|
|
this.transform(args[0], args[1], args[2], args[3], args[4], args[5]);
|
|
break;
|
|
case OPS.constructPath:
|
|
this.constructPath(args[0], args[1]);
|
|
break;
|
|
case OPS.endPath:
|
|
this.endPath();
|
|
break;
|
|
case 92:
|
|
this.group(opTreeElement.items);
|
|
break;
|
|
default:
|
|
warn(`Unimplemented operator ${fn}`);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
setWordSpacing(wordSpacing) {
|
|
this.current.wordSpacing = wordSpacing;
|
|
}
|
|
|
|
setCharSpacing(charSpacing) {
|
|
this.current.charSpacing = charSpacing;
|
|
}
|
|
|
|
nextLine() {
|
|
this.moveText(0, this.current.leading);
|
|
}
|
|
|
|
setTextMatrix(a, b, c, d, e, f) {
|
|
const current = this.current;
|
|
current.textMatrix = current.lineMatrix = [a, b, c, d, e, f];
|
|
current.textMatrixScale = Math.sqrt(a * a + b * b);
|
|
|
|
current.x = current.lineX = 0;
|
|
current.y = current.lineY = 0;
|
|
|
|
current.xcoords = [];
|
|
current.tspan = this.svgFactory.createElement('svg:tspan');
|
|
current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
|
|
current.tspan.setAttributeNS(null, 'font-size',
|
|
`${pf(current.fontSize)}px`);
|
|
current.tspan.setAttributeNS(null, 'y', pf(-current.y));
|
|
|
|
current.txtElement = this.svgFactory.createElement('svg:text');
|
|
current.txtElement.appendChild(current.tspan);
|
|
}
|
|
|
|
beginText() {
|
|
const current = this.current;
|
|
current.x = current.lineX = 0;
|
|
current.y = current.lineY = 0;
|
|
current.textMatrix = IDENTITY_MATRIX;
|
|
current.lineMatrix = IDENTITY_MATRIX;
|
|
current.textMatrixScale = 1;
|
|
current.tspan = this.svgFactory.createElement('svg:tspan');
|
|
current.txtElement = this.svgFactory.createElement('svg:text');
|
|
current.txtgrp = this.svgFactory.createElement('svg:g');
|
|
current.xcoords = [];
|
|
}
|
|
|
|
moveText(x, y) {
|
|
const current = this.current;
|
|
current.x = current.lineX += x;
|
|
current.y = current.lineY += y;
|
|
|
|
current.xcoords = [];
|
|
current.tspan = this.svgFactory.createElement('svg:tspan');
|
|
current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
|
|
current.tspan.setAttributeNS(null, 'font-size',
|
|
`${pf(current.fontSize)}px`);
|
|
current.tspan.setAttributeNS(null, 'y', pf(-current.y));
|
|
}
|
|
|
|
showText(glyphs) {
|
|
const current = this.current;
|
|
const font = current.font;
|
|
const fontSize = current.fontSize;
|
|
if (fontSize === 0) {
|
|
return;
|
|
}
|
|
|
|
const charSpacing = current.charSpacing;
|
|
const wordSpacing = current.wordSpacing;
|
|
const fontDirection = current.fontDirection;
|
|
const textHScale = current.textHScale * fontDirection;
|
|
const vertical = font.vertical;
|
|
const widthAdvanceScale = fontSize * current.fontMatrix[0];
|
|
|
|
let x = 0;
|
|
for (const glyph of glyphs) {
|
|
if (glyph === null) {
|
|
// Word break
|
|
x += fontDirection * wordSpacing;
|
|
continue;
|
|
} else if (isNum(glyph)) {
|
|
x += -glyph * fontSize * 0.001;
|
|
continue;
|
|
}
|
|
|
|
const width = glyph.width;
|
|
const character = glyph.fontChar;
|
|
const spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing;
|
|
const charWidth = width * widthAdvanceScale + spacing * fontDirection;
|
|
|
|
if (!glyph.isInFont && !font.missingFile) {
|
|
x += charWidth;
|
|
// TODO: To assist with text selection, we should replace the missing
|
|
// character with a space character if charWidth is not zero.
|
|
// But we cannot just do "character = ' '", because the ' ' character
|
|
// might actually map to a different glyph.
|
|
continue;
|
|
}
|
|
current.xcoords.push(current.x + x * textHScale);
|
|
current.tspan.textContent += character;
|
|
x += charWidth;
|
|
}
|
|
if (vertical) {
|
|
current.y -= x * textHScale;
|
|
} else {
|
|
current.x += x * textHScale;
|
|
}
|
|
|
|
current.tspan.setAttributeNS(null, 'x',
|
|
current.xcoords.map(pf).join(' '));
|
|
current.tspan.setAttributeNS(null, 'y', pf(-current.y));
|
|
current.tspan.setAttributeNS(null, 'font-family', current.fontFamily);
|
|
current.tspan.setAttributeNS(null, 'font-size',
|
|
`${pf(current.fontSize)}px`);
|
|
if (current.fontStyle !== SVG_DEFAULTS.fontStyle) {
|
|
current.tspan.setAttributeNS(null, 'font-style', current.fontStyle);
|
|
}
|
|
if (current.fontWeight !== SVG_DEFAULTS.fontWeight) {
|
|
current.tspan.setAttributeNS(null, 'font-weight', current.fontWeight);
|
|
}
|
|
|
|
const fillStrokeMode = current.textRenderingMode &
|
|
TextRenderingMode.FILL_STROKE_MASK;
|
|
if (fillStrokeMode === TextRenderingMode.FILL ||
|
|
fillStrokeMode === TextRenderingMode.FILL_STROKE) {
|
|
if (current.fillColor !== SVG_DEFAULTS.fillColor) {
|
|
current.tspan.setAttributeNS(null, 'fill', current.fillColor);
|
|
}
|
|
if (current.fillAlpha < 1) {
|
|
current.tspan.setAttributeNS(null, 'fill-opacity', current.fillAlpha);
|
|
}
|
|
} else if (current.textRenderingMode === TextRenderingMode.ADD_TO_PATH) {
|
|
// Workaround for Firefox: We must set fill="transparent" because
|
|
// fill="none" would generate an empty clipping path.
|
|
current.tspan.setAttributeNS(null, 'fill', 'transparent');
|
|
} else {
|
|
current.tspan.setAttributeNS(null, 'fill', 'none');
|
|
}
|
|
|
|
if (fillStrokeMode === TextRenderingMode.STROKE ||
|
|
fillStrokeMode === TextRenderingMode.FILL_STROKE) {
|
|
const lineWidthScale = 1 / (current.textMatrixScale || 1);
|
|
this._setStrokeAttributes(current.tspan, lineWidthScale);
|
|
}
|
|
|
|
// Include the text rise in the text matrix since the `pm` function
|
|
// creates the SVG element's `translate` entry (work on a copy to avoid
|
|
// altering the original text matrix).
|
|
let textMatrix = current.textMatrix;
|
|
if (current.textRise !== 0) {
|
|
textMatrix = textMatrix.slice();
|
|
textMatrix[5] += current.textRise;
|
|
}
|
|
|
|
current.txtElement.setAttributeNS(null, 'transform',
|
|
`${pm(textMatrix)} scale(1, -1)`);
|
|
current.txtElement.setAttributeNS(XML_NS, 'xml:space', 'preserve');
|
|
current.txtElement.appendChild(current.tspan);
|
|
current.txtgrp.appendChild(current.txtElement);
|
|
|
|
this._ensureTransformGroup().appendChild(current.txtElement);
|
|
}
|
|
|
|
setLeadingMoveText(x, y) {
|
|
this.setLeading(-y);
|
|
this.moveText(x, y);
|
|
}
|
|
|
|
addFontStyle(fontObj) {
|
|
if (!this.cssStyle) {
|
|
this.cssStyle = this.svgFactory.createElement('svg:style');
|
|
this.cssStyle.setAttributeNS(null, 'type', 'text/css');
|
|
this.defs.appendChild(this.cssStyle);
|
|
}
|
|
|
|
const url = createObjectURL(fontObj.data, fontObj.mimetype,
|
|
this.forceDataSchema);
|
|
this.cssStyle.textContent +=
|
|
`@font-face { font-family: "${fontObj.loadedName}";` +
|
|
` src: url(${url}); }\n`;
|
|
}
|
|
|
|
setFont(details) {
|
|
const current = this.current;
|
|
const fontObj = this.commonObjs.get(details[0]);
|
|
let size = details[1];
|
|
current.font = fontObj;
|
|
|
|
if (this.embedFonts && fontObj.data &&
|
|
!this.embeddedFonts[fontObj.loadedName]) {
|
|
this.addFontStyle(fontObj);
|
|
this.embeddedFonts[fontObj.loadedName] = fontObj;
|
|
}
|
|
|
|
current.fontMatrix = (fontObj.fontMatrix ?
|
|
fontObj.fontMatrix : FONT_IDENTITY_MATRIX);
|
|
|
|
const bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') :
|
|
(fontObj.bold ? 'bold' : 'normal');
|
|
const italic = fontObj.italic ? 'italic' : 'normal';
|
|
|
|
if (size < 0) {
|
|
size = -size;
|
|
current.fontDirection = -1;
|
|
} else {
|
|
current.fontDirection = 1;
|
|
}
|
|
current.fontSize = size;
|
|
current.fontFamily = fontObj.loadedName;
|
|
current.fontWeight = bold;
|
|
current.fontStyle = italic;
|
|
|
|
current.tspan = this.svgFactory.createElement('svg:tspan');
|
|
current.tspan.setAttributeNS(null, 'y', pf(-current.y));
|
|
current.xcoords = [];
|
|
}
|
|
|
|
endText() {
|
|
const current = this.current;
|
|
if ((current.textRenderingMode & TextRenderingMode.ADD_TO_PATH_FLAG) &&
|
|
current.txtElement && current.txtElement.hasChildNodes()) {
|
|
// If no glyphs are shown (i.e. no child nodes), no clipping occurs.
|
|
current.element = current.txtElement;
|
|
this.clip('nonzero');
|
|
this.endPath();
|
|
}
|
|
}
|
|
|
|
// Path properties
|
|
setLineWidth(width) {
|
|
if (width > 0) {
|
|
this.current.lineWidth = width;
|
|
}
|
|
}
|
|
|
|
setLineCap(style) {
|
|
this.current.lineCap = LINE_CAP_STYLES[style];
|
|
}
|
|
|
|
setLineJoin(style) {
|
|
this.current.lineJoin = LINE_JOIN_STYLES[style];
|
|
}
|
|
|
|
setMiterLimit(limit) {
|
|
this.current.miterLimit = limit;
|
|
}
|
|
|
|
setStrokeAlpha(strokeAlpha) {
|
|
this.current.strokeAlpha = strokeAlpha;
|
|
}
|
|
|
|
setStrokeRGBColor(r, g, b) {
|
|
this.current.strokeColor = Util.makeCssRgb(r, g, b);
|
|
}
|
|
|
|
setFillAlpha(fillAlpha) {
|
|
this.current.fillAlpha = fillAlpha;
|
|
}
|
|
|
|
setFillRGBColor(r, g, b) {
|
|
this.current.fillColor = Util.makeCssRgb(r, g, b);
|
|
this.current.tspan = this.svgFactory.createElement('svg:tspan');
|
|
this.current.xcoords = [];
|
|
}
|
|
|
|
setStrokeColorN(args) {
|
|
this.current.strokeColor = this._makeColorN_Pattern(args);
|
|
}
|
|
|
|
setFillColorN(args) {
|
|
this.current.fillColor = this._makeColorN_Pattern(args);
|
|
}
|
|
|
|
shadingFill(args) {
|
|
const width = this.viewport.width;
|
|
const height = this.viewport.height;
|
|
const inv = Util.inverseTransform(this.transformMatrix);
|
|
const bl = Util.applyTransform([0, 0], inv);
|
|
const br = Util.applyTransform([0, height], inv);
|
|
const ul = Util.applyTransform([width, 0], inv);
|
|
const ur = Util.applyTransform([width, height], inv);
|
|
const x0 = Math.min(bl[0], br[0], ul[0], ur[0]);
|
|
const y0 = Math.min(bl[1], br[1], ul[1], ur[1]);
|
|
const x1 = Math.max(bl[0], br[0], ul[0], ur[0]);
|
|
const y1 = Math.max(bl[1], br[1], ul[1], ur[1]);
|
|
|
|
const rect = this.svgFactory.createElement('svg:rect');
|
|
rect.setAttributeNS(null, 'x', x0);
|
|
rect.setAttributeNS(null, 'y', y0);
|
|
rect.setAttributeNS(null, 'width', x1 - x0);
|
|
rect.setAttributeNS(null, 'height', y1 - y0);
|
|
rect.setAttributeNS(null, 'fill', this._makeShadingPattern(args));
|
|
this._ensureTransformGroup().appendChild(rect);
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_makeColorN_Pattern(args) {
|
|
if (args[0] === 'TilingPattern') {
|
|
warn('Unimplemented pattern TilingPattern');
|
|
return null;
|
|
}
|
|
return this._makeShadingPattern(args);
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_makeShadingPattern(args) {
|
|
switch (args[0]) {
|
|
case 'RadialAxial':
|
|
const shadingId = `shading${shadingCount++}`;
|
|
const colorStops = args[2];
|
|
let gradient;
|
|
|
|
switch (args[1]) {
|
|
case 'axial':
|
|
const point0 = args[3];
|
|
const point1 = args[4];
|
|
gradient = this.svgFactory.createElement('svg:linearGradient');
|
|
gradient.setAttributeNS(null, 'id', shadingId);
|
|
gradient.setAttributeNS(null, 'gradientUnits', 'userSpaceOnUse');
|
|
gradient.setAttributeNS(null, 'x1', point0[0]);
|
|
gradient.setAttributeNS(null, 'y1', point0[1]);
|
|
gradient.setAttributeNS(null, 'x2', point1[0]);
|
|
gradient.setAttributeNS(null, 'y2', point1[1]);
|
|
break;
|
|
case 'radial':
|
|
const focalPoint = args[3];
|
|
const circlePoint = args[4];
|
|
const focalRadius = args[5];
|
|
const circleRadius = args[6];
|
|
gradient = this.svgFactory.createElement('svg:radialGradient');
|
|
gradient.setAttributeNS(null, 'id', shadingId);
|
|
gradient.setAttributeNS(null, 'gradientUnits', 'userSpaceOnUse');
|
|
gradient.setAttributeNS(null, 'cx', circlePoint[0]);
|
|
gradient.setAttributeNS(null, 'cy', circlePoint[1]);
|
|
gradient.setAttributeNS(null, 'r', circleRadius);
|
|
gradient.setAttributeNS(null, 'fx', focalPoint[0]);
|
|
gradient.setAttributeNS(null, 'fy', focalPoint[1]);
|
|
gradient.setAttributeNS(null, 'fr', focalRadius);
|
|
break;
|
|
default:
|
|
throw new Error(`Unknown RadialAxial type: ${args[1]}`);
|
|
}
|
|
for (const colorStop of colorStops) {
|
|
const stop = this.svgFactory.createElement('svg:stop');
|
|
stop.setAttributeNS(null, 'offset', colorStop[0]);
|
|
stop.setAttributeNS(null, 'stop-color', colorStop[1]);
|
|
gradient.appendChild(stop);
|
|
}
|
|
this.defs.appendChild(gradient);
|
|
return `url(#${shadingId})`;
|
|
case 'Mesh':
|
|
warn('Unimplemented pattern Mesh');
|
|
return null;
|
|
case 'Dummy':
|
|
return 'hotpink';
|
|
default:
|
|
throw new Error(`Unknown IR type: ${args[0]}`);
|
|
}
|
|
}
|
|
|
|
setDash(dashArray, dashPhase) {
|
|
this.current.dashArray = dashArray;
|
|
this.current.dashPhase = dashPhase;
|
|
}
|
|
|
|
constructPath(ops, args) {
|
|
const current = this.current;
|
|
let x = current.x, y = current.y;
|
|
let d = [];
|
|
let j = 0;
|
|
|
|
for (const op of ops) {
|
|
switch (op | 0) {
|
|
case OPS.rectangle:
|
|
x = args[j++];
|
|
y = args[j++];
|
|
const width = args[j++];
|
|
const height = args[j++];
|
|
const xw = x + width;
|
|
const yh = y + height;
|
|
d.push('M', pf(x), pf(y), 'L', pf(xw), pf(y), 'L', pf(xw), pf(yh),
|
|
'L', pf(x), pf(yh), 'Z');
|
|
break;
|
|
case OPS.moveTo:
|
|
x = args[j++];
|
|
y = args[j++];
|
|
d.push('M', pf(x), pf(y));
|
|
break;
|
|
case OPS.lineTo:
|
|
x = args[j++];
|
|
y = args[j++];
|
|
d.push('L', pf(x), pf(y));
|
|
break;
|
|
case OPS.curveTo:
|
|
x = args[j + 4];
|
|
y = args[j + 5];
|
|
d.push('C', pf(args[j]), pf(args[j + 1]), pf(args[j + 2]),
|
|
pf(args[j + 3]), pf(x), pf(y));
|
|
j += 6;
|
|
break;
|
|
case OPS.curveTo2:
|
|
x = args[j + 2];
|
|
y = args[j + 3];
|
|
d.push('C', pf(x), pf(y), pf(args[j]), pf(args[j + 1]),
|
|
pf(args[j + 2]), pf(args[j + 3]));
|
|
j += 4;
|
|
break;
|
|
case OPS.curveTo3:
|
|
x = args[j + 2];
|
|
y = args[j + 3];
|
|
d.push('C', pf(args[j]), pf(args[j + 1]), pf(x), pf(y),
|
|
pf(x), pf(y));
|
|
j += 4;
|
|
break;
|
|
case OPS.closePath:
|
|
d.push('Z');
|
|
break;
|
|
}
|
|
}
|
|
|
|
d = d.join(' ');
|
|
|
|
if (current.path && ops.length > 0 && ops[0] !== OPS.rectangle &&
|
|
ops[0] !== OPS.moveTo) {
|
|
// If a path does not start with an OPS.rectangle or OPS.moveTo, it has
|
|
// probably been divided into two OPS.constructPath operators by
|
|
// OperatorList. Append the commands to the previous path element.
|
|
d = current.path.getAttributeNS(null, 'd') + d;
|
|
} else {
|
|
current.path = this.svgFactory.createElement('svg:path');
|
|
this._ensureTransformGroup().appendChild(current.path);
|
|
}
|
|
|
|
current.path.setAttributeNS(null, 'd', d);
|
|
current.path.setAttributeNS(null, 'fill', 'none');
|
|
|
|
// Saving a reference in current.element so that it can be addressed
|
|
// in 'fill' and 'stroke'
|
|
current.element = current.path;
|
|
current.setCurrentPoint(x, y);
|
|
}
|
|
|
|
endPath() {
|
|
const current = this.current;
|
|
|
|
// Painting operators end a path.
|
|
current.path = null;
|
|
|
|
if (!this.pendingClip) {
|
|
return;
|
|
}
|
|
|
|
// Add the current path to a clipping path.
|
|
const clipId = `clippath${clipCount++}`;
|
|
const clipPath = this.svgFactory.createElement('svg:clipPath');
|
|
clipPath.setAttributeNS(null, 'id', clipId);
|
|
clipPath.setAttributeNS(null, 'transform', pm(this.transformMatrix));
|
|
|
|
// A deep clone is needed when text is used as a clipping path.
|
|
const clipElement = current.element.cloneNode(true);
|
|
if (this.pendingClip === 'evenodd') {
|
|
clipElement.setAttributeNS(null, 'clip-rule', 'evenodd');
|
|
} else {
|
|
clipElement.setAttributeNS(null, 'clip-rule', 'nonzero');
|
|
}
|
|
this.pendingClip = null;
|
|
clipPath.appendChild(clipElement);
|
|
this.defs.appendChild(clipPath);
|
|
|
|
if (current.activeClipUrl) {
|
|
// The previous clipping group content can go out of order -- resetting
|
|
// cached clipGroups.
|
|
current.clipGroup = null;
|
|
this.extraStack.forEach(function(prev) {
|
|
prev.clipGroup = null;
|
|
});
|
|
// Intersect with the previous clipping path.
|
|
clipPath.setAttributeNS(null, 'clip-path', current.activeClipUrl);
|
|
}
|
|
current.activeClipUrl = `url(#${clipId})`;
|
|
|
|
this.tgrp = null;
|
|
}
|
|
|
|
clip(type) {
|
|
this.pendingClip = type;
|
|
}
|
|
|
|
closePath() {
|
|
const current = this.current;
|
|
if (current.path) {
|
|
const d = `${current.path.getAttributeNS(null, 'd')}Z`;
|
|
current.path.setAttributeNS(null, 'd', d);
|
|
}
|
|
}
|
|
|
|
setLeading(leading) {
|
|
this.current.leading = -leading;
|
|
}
|
|
|
|
setTextRise(textRise) {
|
|
this.current.textRise = textRise;
|
|
}
|
|
|
|
setTextRenderingMode(textRenderingMode) {
|
|
this.current.textRenderingMode = textRenderingMode;
|
|
}
|
|
|
|
setHScale(scale) {
|
|
this.current.textHScale = scale / 100;
|
|
}
|
|
|
|
setRenderingIntent(intent) {
|
|
// This operation is ignored since we haven't found a use case for it yet.
|
|
}
|
|
|
|
setFlatness(flatness) {
|
|
// This operation is ignored since we haven't found a use case for it yet.
|
|
}
|
|
|
|
setGState(states) {
|
|
for (const [key, value] of states) {
|
|
switch (key) {
|
|
case 'LW':
|
|
this.setLineWidth(value);
|
|
break;
|
|
case 'LC':
|
|
this.setLineCap(value);
|
|
break;
|
|
case 'LJ':
|
|
this.setLineJoin(value);
|
|
break;
|
|
case 'ML':
|
|
this.setMiterLimit(value);
|
|
break;
|
|
case 'D':
|
|
this.setDash(value[0], value[1]);
|
|
break;
|
|
case 'RI':
|
|
this.setRenderingIntent(value);
|
|
break;
|
|
case 'FL':
|
|
this.setFlatness(value);
|
|
break;
|
|
case 'Font':
|
|
this.setFont(value);
|
|
break;
|
|
case 'CA':
|
|
this.setStrokeAlpha(value);
|
|
break;
|
|
case 'ca':
|
|
this.setFillAlpha(value);
|
|
break;
|
|
default:
|
|
warn(`Unimplemented graphic state operator ${key}`);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
fill() {
|
|
const current = this.current;
|
|
if (current.element) {
|
|
current.element.setAttributeNS(null, 'fill', current.fillColor);
|
|
current.element.setAttributeNS(null, 'fill-opacity', current.fillAlpha);
|
|
this.endPath();
|
|
}
|
|
}
|
|
|
|
stroke() {
|
|
const current = this.current;
|
|
if (current.element) {
|
|
this._setStrokeAttributes(current.element);
|
|
current.element.setAttributeNS(null, 'fill', 'none');
|
|
this.endPath();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_setStrokeAttributes(element, lineWidthScale = 1) {
|
|
const current = this.current;
|
|
let dashArray = current.dashArray;
|
|
if (lineWidthScale !== 1 && dashArray.length > 0) {
|
|
dashArray = dashArray.map(function(value) {
|
|
return lineWidthScale * value;
|
|
});
|
|
}
|
|
element.setAttributeNS(null, 'stroke', current.strokeColor);
|
|
element.setAttributeNS(null, 'stroke-opacity', current.strokeAlpha);
|
|
element.setAttributeNS(null, 'stroke-miterlimit', pf(current.miterLimit));
|
|
element.setAttributeNS(null, 'stroke-linecap', current.lineCap);
|
|
element.setAttributeNS(null, 'stroke-linejoin', current.lineJoin);
|
|
element.setAttributeNS(null, 'stroke-width',
|
|
pf(lineWidthScale * current.lineWidth) + 'px');
|
|
element.setAttributeNS(null, 'stroke-dasharray',
|
|
dashArray.map(pf).join(' '));
|
|
element.setAttributeNS(null, 'stroke-dashoffset',
|
|
pf(lineWidthScale * current.dashPhase) + 'px');
|
|
}
|
|
|
|
eoFill() {
|
|
if (this.current.element) {
|
|
this.current.element.setAttributeNS(null, 'fill-rule', 'evenodd');
|
|
}
|
|
this.fill();
|
|
}
|
|
|
|
fillStroke() {
|
|
// Order is important since stroke wants fill to be none.
|
|
// First stroke, then if fill needed, it will be overwritten.
|
|
this.stroke();
|
|
this.fill();
|
|
}
|
|
|
|
eoFillStroke() {
|
|
if (this.current.element) {
|
|
this.current.element.setAttributeNS(null, 'fill-rule', 'evenodd');
|
|
}
|
|
this.fillStroke();
|
|
}
|
|
|
|
closeStroke() {
|
|
this.closePath();
|
|
this.stroke();
|
|
}
|
|
|
|
closeFillStroke() {
|
|
this.closePath();
|
|
this.fillStroke();
|
|
}
|
|
|
|
closeEOFillStroke() {
|
|
this.closePath();
|
|
this.eoFillStroke();
|
|
}
|
|
|
|
paintSolidColorImageMask() {
|
|
const rect = this.svgFactory.createElement('svg:rect');
|
|
rect.setAttributeNS(null, 'x', '0');
|
|
rect.setAttributeNS(null, 'y', '0');
|
|
rect.setAttributeNS(null, 'width', '1px');
|
|
rect.setAttributeNS(null, 'height', '1px');
|
|
rect.setAttributeNS(null, 'fill', this.current.fillColor);
|
|
|
|
this._ensureTransformGroup().appendChild(rect);
|
|
}
|
|
|
|
paintJpegXObject(objId, w, h) {
|
|
const imgObj = this.objs.get(objId);
|
|
const imgEl = this.svgFactory.createElement('svg:image');
|
|
imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgObj.src);
|
|
imgEl.setAttributeNS(null, 'width', pf(w));
|
|
imgEl.setAttributeNS(null, 'height', pf(h));
|
|
imgEl.setAttributeNS(null, 'x', '0');
|
|
imgEl.setAttributeNS(null, 'y', pf(-h));
|
|
imgEl.setAttributeNS(null, 'transform',
|
|
`scale(${pf(1 / w)} ${pf(-1 / h)})`);
|
|
|
|
this._ensureTransformGroup().appendChild(imgEl);
|
|
}
|
|
|
|
paintImageXObject(objId) {
|
|
const imgData = this.objs.get(objId);
|
|
if (!imgData) {
|
|
warn(`Dependent image with object ID ${objId} is not ready yet`);
|
|
return;
|
|
}
|
|
this.paintInlineImageXObject(imgData);
|
|
}
|
|
|
|
paintInlineImageXObject(imgData, mask) {
|
|
const width = imgData.width;
|
|
const height = imgData.height;
|
|
|
|
const imgSrc = convertImgDataToPng(imgData, this.forceDataSchema, !!mask);
|
|
const cliprect = this.svgFactory.createElement('svg:rect');
|
|
cliprect.setAttributeNS(null, 'x', '0');
|
|
cliprect.setAttributeNS(null, 'y', '0');
|
|
cliprect.setAttributeNS(null, 'width', pf(width));
|
|
cliprect.setAttributeNS(null, 'height', pf(height));
|
|
this.current.element = cliprect;
|
|
this.clip('nonzero');
|
|
|
|
const imgEl = this.svgFactory.createElement('svg:image');
|
|
imgEl.setAttributeNS(XLINK_NS, 'xlink:href', imgSrc);
|
|
imgEl.setAttributeNS(null, 'x', '0');
|
|
imgEl.setAttributeNS(null, 'y', pf(-height));
|
|
imgEl.setAttributeNS(null, 'width', pf(width) + 'px');
|
|
imgEl.setAttributeNS(null, 'height', pf(height) + 'px');
|
|
imgEl.setAttributeNS(null, 'transform',
|
|
`scale(${pf(1 / width)} ${pf(-1 / height)})`);
|
|
if (mask) {
|
|
mask.appendChild(imgEl);
|
|
} else {
|
|
this._ensureTransformGroup().appendChild(imgEl);
|
|
}
|
|
}
|
|
|
|
paintImageMaskXObject(imgData) {
|
|
const current = this.current;
|
|
const width = imgData.width;
|
|
const height = imgData.height;
|
|
const fillColor = current.fillColor;
|
|
|
|
current.maskId = `mask${maskCount++}`;
|
|
const mask = this.svgFactory.createElement('svg:mask');
|
|
mask.setAttributeNS(null, 'id', current.maskId);
|
|
|
|
const rect = this.svgFactory.createElement('svg:rect');
|
|
rect.setAttributeNS(null, 'x', '0');
|
|
rect.setAttributeNS(null, 'y', '0');
|
|
rect.setAttributeNS(null, 'width', pf(width));
|
|
rect.setAttributeNS(null, 'height', pf(height));
|
|
rect.setAttributeNS(null, 'fill', fillColor);
|
|
rect.setAttributeNS(null, 'mask', `url(#${current.maskId})`);
|
|
|
|
this.defs.appendChild(mask);
|
|
this._ensureTransformGroup().appendChild(rect);
|
|
|
|
this.paintInlineImageXObject(imgData, mask);
|
|
}
|
|
|
|
paintFormXObjectBegin(matrix, bbox) {
|
|
if (Array.isArray(matrix) && matrix.length === 6) {
|
|
this.transform(matrix[0], matrix[1], matrix[2],
|
|
matrix[3], matrix[4], matrix[5]);
|
|
}
|
|
|
|
if (bbox) {
|
|
const width = bbox[2] - bbox[0];
|
|
const height = bbox[3] - bbox[1];
|
|
|
|
const cliprect = this.svgFactory.createElement('svg:rect');
|
|
cliprect.setAttributeNS(null, 'x', bbox[0]);
|
|
cliprect.setAttributeNS(null, 'y', bbox[1]);
|
|
cliprect.setAttributeNS(null, 'width', pf(width));
|
|
cliprect.setAttributeNS(null, 'height', pf(height));
|
|
this.current.element = cliprect;
|
|
this.clip('nonzero');
|
|
this.endPath();
|
|
}
|
|
}
|
|
|
|
paintFormXObjectEnd() {}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_initialize(viewport) {
|
|
const svg = this.svgFactory.create(viewport.width, viewport.height);
|
|
|
|
// Create the definitions element.
|
|
const definitions = this.svgFactory.createElement('svg:defs');
|
|
svg.appendChild(definitions);
|
|
this.defs = definitions;
|
|
|
|
// Create the root group element, which acts a container for all other
|
|
// groups and applies the viewport transform.
|
|
const rootGroup = this.svgFactory.createElement('svg:g');
|
|
rootGroup.setAttributeNS(null, 'transform', pm(viewport.transform));
|
|
svg.appendChild(rootGroup);
|
|
|
|
// For the construction of the SVG image we are only interested in the
|
|
// root group, so we expose it as the entry point of the SVG image for
|
|
// the other code in this class.
|
|
this.svg = rootGroup;
|
|
|
|
return svg;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_ensureClipGroup() {
|
|
if (!this.current.clipGroup) {
|
|
const clipGroup = this.svgFactory.createElement('svg:g');
|
|
clipGroup.setAttributeNS(null, 'clip-path', this.current.activeClipUrl);
|
|
this.svg.appendChild(clipGroup);
|
|
this.current.clipGroup = clipGroup;
|
|
}
|
|
return this.current.clipGroup;
|
|
}
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_ensureTransformGroup() {
|
|
if (!this.tgrp) {
|
|
this.tgrp = this.svgFactory.createElement('svg:g');
|
|
this.tgrp.setAttributeNS(null, 'transform', pm(this.transformMatrix));
|
|
if (this.current.activeClipUrl) {
|
|
this._ensureClipGroup().appendChild(this.tgrp);
|
|
} else {
|
|
this.svg.appendChild(this.tgrp);
|
|
}
|
|
}
|
|
return this.tgrp;
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
export {
|
|
SVGGraphics,
|
|
};
|