@cantoo/pdf-lib
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Create and modify PDF files with JavaScript
749 lines • 31.6 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.drawSvg = exports.transformationToMatrix = exports.combineMatrix = void 0;
const tslib_1 = require("tslib");
const node_html_better_parser_1 = require("node-html-better-parser");
const colors_1 = require("./colors");
const rotations_1 = require("./rotations");
const PDFSvg_1 = tslib_1.__importDefault(require("./PDFSvg"));
const PDFPageOptions_1 = require("./PDFPageOptions");
const operators_1 = require("./operators");
const matrix_1 = require("../types/matrix");
const combineMatrix = ([a, b, c, d, e, f], [a2, b2, c2, d2, e2, f2]) => [
a * a2 + c * b2,
b * a2 + d * b2,
a * c2 + c * d2,
b * c2 + d * d2,
a * e2 + c * f2 + e,
b * e2 + d * f2 + f,
];
exports.combineMatrix = combineMatrix;
const applyTransformation = ([a, b, c, d, e, f], { x, y }) => ({
x: a * x + c * y + e,
y: b * x + d * y + f,
});
const transformationToMatrix = (name, args) => {
switch (name) {
case 'scale':
case 'scaleX':
case 'scaleY': {
// [sx 0 0 sy 0 0]
const [sx, sy = sx] = args;
return [
name === 'scaleY' ? 1 : sx,
0,
0,
name === 'scaleX' ? 1 : sy,
0,
0,
];
}
case 'translate':
case 'translateX':
case 'translateY': {
// [1 0 0 1 tx ty]
const [tx, ty = tx] = args;
// -ty is necessary because the pdf's y axis is inverted
return [
1,
0,
0,
1,
name === 'translateY' ? 0 : tx,
name === 'translateX' ? 0 : -ty,
];
}
case 'rotate': {
// [cos(a) sin(a) -sin(a) cos(a) 0 0]
const [a, x = 0, y = 0] = args;
const t1 = (0, exports.transformationToMatrix)('translate', [x, y]);
const t2 = (0, exports.transformationToMatrix)('translate', [-x, -y]);
// -args[0] -> the '-' operator is necessary because the pdf rotation system is inverted
const aRadians = (0, rotations_1.degreesToRadians)(-a);
const r = [
Math.cos(aRadians),
Math.sin(aRadians),
-Math.sin(aRadians),
Math.cos(aRadians),
0,
0,
];
// rotation around a point is the combination of: translate * rotate * (-translate)
return (0, exports.combineMatrix)((0, exports.combineMatrix)(t1, r), t2);
}
case 'skewY':
case 'skewX': {
// [1 tan(a) 0 1 0 0]
// [1 0 tan(a) 1 0 0]
// -args[0] -> the '-' operator is necessary because the pdf rotation system is inverted
const a = (0, rotations_1.degreesToRadians)(-args[0]);
const skew = Math.tan(a);
const skewX = name === 'skewX' ? skew : 0;
const skewY = name === 'skewY' ? skew : 0;
return [1, skewY, skewX, 1, 0, 0];
}
case 'matrix': {
const [a, b, c, d, e, f] = args;
const r = (0, exports.transformationToMatrix)('scale', [1, -1]);
const m = [a, b, c, d, e, f];
return (0, exports.combineMatrix)((0, exports.combineMatrix)(r, m), r);
}
default:
return matrix_1.identityMatrix;
}
};
exports.transformationToMatrix = transformationToMatrix;
const combineTransformation = (matrix, name, args) => (0, exports.combineMatrix)(matrix, (0, exports.transformationToMatrix)(name, args));
const StrokeLineCapMap = {
butt: operators_1.LineCapStyle.Butt,
round: operators_1.LineCapStyle.Round,
square: operators_1.LineCapStyle.Projecting,
};
const FillRuleMap = {
evenodd: operators_1.FillRule.EvenOdd,
nonzero: operators_1.FillRule.NonZero,
};
const StrokeLineJoinMap = {
bevel: operators_1.LineJoinStyle.Bevel,
miter: operators_1.LineJoinStyle.Miter,
round: operators_1.LineJoinStyle.Round,
};
// TODO: Improve type system to require the correct props for each tagName.
/** methods to draw SVGElements onto a PDFPage */
const runnersToPage = (page, options) => ({
text(element) {
const anchor = element.svgAttributes.textAnchor;
const dominantBaseline = element.svgAttributes.dominantBaseline;
const text = element.text.trim().replace(/\s/g, ' ');
const fontSize = element.svgAttributes.fontSize || 12;
/** This will find the best font for the provided style in the list */
const getBestFont = (style, fonts) => {
const family = style.fontFamily;
if (!family)
return undefined;
const isBold = style.fontWeight === 'bold' || Number(style.fontWeight) >= 700;
const isItalic = style.fontStyle === 'italic';
const getFont = (bold, italic, fontFamily) => fonts[fontFamily + (bold ? '_bold' : '') + (italic ? '_italic' : '')];
const key = Object.keys(fonts).find((fontFamily) => fontFamily.startsWith(family));
return (getFont(isBold, isItalic, family) ||
getFont(isBold, false, family) ||
getFont(false, isItalic, family) ||
getFont(false, false, family) ||
(key ? fonts[key] : undefined));
};
const font = options.fonts && getBestFont(element.svgAttributes, options.fonts);
const textWidth = (font || page.getFont()[0]).widthOfTextAtSize(text, fontSize);
const textHeight = (font || page.getFont()[0]).heightAtSize(fontSize);
const overLineHeight = (font || page.getFont()[0]).heightAtSize(fontSize, {
descender: false,
});
const offsetX = anchor === 'middle' ? textWidth / 2 : anchor === 'end' ? textWidth : 0;
let offsetY = 0;
switch (dominantBaseline) {
case 'middle':
case 'central':
offsetY = overLineHeight - textHeight / 2;
break;
case 'mathematical':
offsetY = fontSize * 0.6; // Mathematical (approximation)
break;
case 'hanging':
offsetY = overLineHeight; // Hanging baseline is at the top
break;
case 'text-before-edge':
offsetY = fontSize; // Top of the text
break;
case 'ideographic':
case 'text-after-edge':
offsetY = overLineHeight - textHeight; // After edge (similar to text-bottom)
break;
case 'text-top':
case 'text-bottom':
case 'auto':
case 'use-script':
case 'no-change':
case 'reset-size':
case 'alphabetic':
default:
offsetY = 0; // Default to alphabetic if not specified
break;
}
page.drawText(text, {
x: -offsetX,
y: -offsetY,
font,
// TODO: the font size should be correctly scaled too
size: fontSize,
color: element.svgAttributes.fill,
opacity: element.svgAttributes.fillOpacity,
matrix: element.svgAttributes.matrix,
clipSpaces: element.svgAttributes.clipSpaces,
blendMode: element.svgAttributes.blendMode || options.blendMode,
});
},
line(element) {
page.drawLine({
start: {
x: element.svgAttributes.x1 || 0,
y: -element.svgAttributes.y1 || 0,
},
end: {
x: element.svgAttributes.x2 || 0,
y: -element.svgAttributes.y2 || 0,
},
thickness: element.svgAttributes.strokeWidth,
color: element.svgAttributes.stroke,
opacity: element.svgAttributes.strokeOpacity,
lineCap: element.svgAttributes.strokeLineCap,
matrix: element.svgAttributes.matrix,
clipSpaces: element.svgAttributes.clipSpaces,
blendMode: element.svgAttributes.blendMode || options.blendMode,
});
},
path(element) {
if (!element.svgAttributes.d)
return;
// See https://jsbin.com/kawifomupa/edit?html,output and
page.drawSvgPath(element.svgAttributes.d, {
x: 0,
y: 0,
borderColor: element.svgAttributes.stroke,
borderWidth: element.svgAttributes.strokeWidth,
borderOpacity: element.svgAttributes.strokeOpacity,
borderLineCap: element.svgAttributes.strokeLineCap,
color: element.svgAttributes.fill,
opacity: element.svgAttributes.fillOpacity,
fillRule: element.svgAttributes.fillRule,
// drawSvgPath already handle the page y coord correctly, so we can undo the svg parsing correction
matrix: combineTransformation(element.svgAttributes.matrix, 'scale', [1, -1]),
clipSpaces: element.svgAttributes.clipSpaces,
blendMode: element.svgAttributes.blendMode || options.blendMode,
});
},
image(element) {
var _a, _b;
const { src } = element.svgAttributes;
if (!(src && ((_a = options.images) === null || _a === void 0 ? void 0 : _a[src])))
return;
const img = (_b = options.images) === null || _b === void 0 ? void 0 : _b[src];
const { x, y, width, height } = getFittingRectangle(img.width, img.height, element.svgAttributes.width || img.width, element.svgAttributes.height || img.height, element.svgAttributes.preserveAspectRatio);
page.drawImage(img, {
x,
y: -y - height,
width,
height,
opacity: element.svgAttributes.fillOpacity,
matrix: element.svgAttributes.matrix,
clipSpaces: element.svgAttributes.clipSpaces,
blendMode: element.svgAttributes.blendMode || options.blendMode,
});
},
rect(element) {
if (!element.svgAttributes.fill && !element.svgAttributes.stroke)
return;
page.drawRectangle({
x: 0,
y: 0,
width: element.svgAttributes.width,
height: element.svgAttributes.height,
rx: element.svgAttributes.rx,
ry: element.svgAttributes.ry,
borderColor: element.svgAttributes.stroke,
borderWidth: element.svgAttributes.strokeWidth,
borderOpacity: element.svgAttributes.strokeOpacity,
borderLineCap: element.svgAttributes.strokeLineCap,
color: element.svgAttributes.fill,
opacity: element.svgAttributes.fillOpacity,
matrix: combineTransformation(element.svgAttributes.matrix, 'translateY', [element.svgAttributes.height]),
clipSpaces: element.svgAttributes.clipSpaces,
blendMode: element.svgAttributes.blendMode || options.blendMode,
});
},
ellipse(element) {
page.drawEllipse({
x: element.svgAttributes.cx || 0,
y: -(element.svgAttributes.cy || 0),
xScale: element.svgAttributes.rx,
yScale: element.svgAttributes.ry,
borderColor: element.svgAttributes.stroke,
borderWidth: element.svgAttributes.strokeWidth,
borderOpacity: element.svgAttributes.strokeOpacity,
borderLineCap: element.svgAttributes.strokeLineCap,
color: element.svgAttributes.fill,
opacity: element.svgAttributes.fillOpacity,
matrix: element.svgAttributes.matrix,
clipSpaces: element.svgAttributes.clipSpaces,
blendMode: element.svgAttributes.blendMode || options.blendMode,
});
},
circle(element) {
return runnersToPage(page, options).ellipse(element);
},
});
const styleOrAttribute = (attributes, style, attribute, def) => {
const value = style[attribute] || attributes[attribute];
if (!value && typeof def !== 'undefined')
return def;
return value;
};
const parseStyles = (style) => {
const cssRegex = /([^:\s]+)*\s*:\s*([^;]+)/g;
const css = {};
let match = cssRegex.exec(style);
while (match !== null) {
css[match[1]] = match[2];
match = cssRegex.exec(style);
}
return css;
};
const parseColor = (color, inherited) => {
if (!color || color.length === 0)
return undefined;
if (['none', 'transparent'].includes(color))
return undefined;
if (color === 'currentColor')
return inherited || parseColor('#000000');
const parsedColor = (0, colors_1.colorString)(color);
return {
rgb: parsedColor.rgb,
alpha: parsedColor.alpha ? parsedColor.alpha + '' : undefined,
};
};
const parseAttributes = (element, inherited, matrix) => {
var _a, _b, _c, _d;
const attributes = element.attributes;
const style = parseStyles(attributes.style);
const widthRaw = styleOrAttribute(attributes, style, 'width', '');
const heightRaw = styleOrAttribute(attributes, style, 'height', '');
const fillRaw = parseColor(styleOrAttribute(attributes, style, 'fill'));
const fillOpacityRaw = styleOrAttribute(attributes, style, 'fill-opacity');
const opacityRaw = styleOrAttribute(attributes, style, 'opacity');
const strokeRaw = parseColor(styleOrAttribute(attributes, style, 'stroke'));
const strokeOpacityRaw = styleOrAttribute(attributes, style, 'stroke-opacity');
const strokeLineCapRaw = styleOrAttribute(attributes, style, 'stroke-linecap');
const strokeLineJoinRaw = styleOrAttribute(attributes, style, 'stroke-linejoin');
const fillRuleRaw = styleOrAttribute(attributes, style, 'fill-rule');
const strokeWidthRaw = styleOrAttribute(attributes, style, 'stroke-width');
const fontFamilyRaw = styleOrAttribute(attributes, style, 'font-family');
const fontStyleRaw = styleOrAttribute(attributes, style, 'font-style');
const fontWeightRaw = styleOrAttribute(attributes, style, 'font-weight');
const fontSizeRaw = styleOrAttribute(attributes, style, 'font-size');
const blendModeRaw = styleOrAttribute(attributes, style, 'mix-blend-mode');
const width = parseFloatValue(widthRaw, inherited.width);
const height = parseFloatValue(heightRaw, inherited.height);
const x = parseFloatValue(attributes.x, inherited.width);
const y = parseFloatValue(attributes.y, inherited.height);
const x1 = parseFloatValue(attributes.x1, inherited.width);
const x2 = parseFloatValue(attributes.x2, inherited.width);
const y1 = parseFloatValue(attributes.y1, inherited.height);
const y2 = parseFloatValue(attributes.y2, inherited.height);
const cx = parseFloatValue(attributes.cx, inherited.width);
const cy = parseFloatValue(attributes.cy, inherited.height);
const rx = parseFloatValue(attributes.rx || attributes.r, inherited.width);
const ry = parseFloatValue(attributes.ry || attributes.r, inherited.height);
const newInherited = {
fontFamily: fontFamilyRaw || inherited.fontFamily,
fontStyle: fontStyleRaw || inherited.fontStyle,
fontWeight: fontWeightRaw || inherited.fontWeight,
fontSize: (_a = parseFloatValue(fontSizeRaw)) !== null && _a !== void 0 ? _a : inherited.fontSize,
fill: (fillRaw === null || fillRaw === void 0 ? void 0 : fillRaw.rgb) || inherited.fill,
fillOpacity: (_b = parseFloatValue(fillOpacityRaw || opacityRaw || (fillRaw === null || fillRaw === void 0 ? void 0 : fillRaw.alpha))) !== null && _b !== void 0 ? _b : inherited.fillOpacity,
fillRule: FillRuleMap[fillRuleRaw] || inherited.fillRule,
stroke: (strokeRaw === null || strokeRaw === void 0 ? void 0 : strokeRaw.rgb) || inherited.stroke,
strokeWidth: (_c = parseFloatValue(strokeWidthRaw)) !== null && _c !== void 0 ? _c : inherited.strokeWidth,
strokeOpacity: (_d = parseFloatValue(strokeOpacityRaw || opacityRaw || (strokeRaw === null || strokeRaw === void 0 ? void 0 : strokeRaw.alpha))) !== null && _d !== void 0 ? _d : inherited.strokeOpacity,
strokeLineCap: StrokeLineCapMap[strokeLineCapRaw] || inherited.strokeLineCap,
strokeLineJoin: StrokeLineJoinMap[strokeLineJoinRaw] || inherited.strokeLineJoin,
width: width || inherited.width,
height: height || inherited.height,
rotation: inherited.rotation,
viewBox: element.tagName === 'svg' && element.attributes.viewBox
? parseViewBox(element.attributes.viewBox)
: inherited.viewBox,
blendMode: parseBlendMode(blendModeRaw) || inherited.blendMode,
};
const svgAttributes = {
src: attributes.src || attributes.href || attributes['xlink:href'],
textAnchor: attributes['text-anchor'],
dominantBaseline: attributes['dominant-baseline'],
preserveAspectRatio: attributes.preserveAspectRatio,
};
let transformList = attributes.transform || '';
// Handle transformations set as direct attributes
[
'translate',
'translateX',
'translateY',
'skewX',
'skewY',
'rotate',
'scale',
'scaleX',
'scaleY',
'matrix',
].forEach((name) => {
if (attributes[name]) {
transformList = attributes[name] + ' ' + transformList;
}
});
// Convert x/y as if it was a translation
if (x || y) {
transformList = transformList + `translate(${x || 0} ${y || 0}) `;
}
let newMatrix = matrix;
// Apply the transformations
if (transformList) {
const regexTransform = /(\w+)\((.+?)\)/g;
let parsed = regexTransform.exec(transformList);
while (parsed !== null) {
const [, name, rawArgs] = parsed;
const args = (rawArgs || '')
.split(/\s*,\s*|\s+/)
.filter((value) => value.length > 0)
.map((value) => parseFloat(value));
newMatrix = combineTransformation(newMatrix, name, args);
parsed = regexTransform.exec(transformList);
}
}
svgAttributes.x = x;
svgAttributes.y = y;
if (attributes.cx || attributes.cy) {
svgAttributes.cx = cx;
svgAttributes.cy = cy;
}
if (attributes.rx || attributes.ry || attributes.r) {
svgAttributes.rx = rx;
svgAttributes.ry = ry;
}
if (attributes.x1 || attributes.y1) {
svgAttributes.x1 = x1;
svgAttributes.y1 = y1;
}
if (attributes.x2 || attributes.y2) {
svgAttributes.x2 = x2;
svgAttributes.y2 = y2;
}
if (attributes.width || attributes.height) {
svgAttributes.width = width !== null && width !== void 0 ? width : inherited.width;
svgAttributes.height = height !== null && height !== void 0 ? height : inherited.height;
}
if (attributes.d) {
newMatrix = combineTransformation(newMatrix, 'scale', [1, -1]);
svgAttributes.d = attributes.d;
}
if (newInherited.fontFamily) {
// Handle complex fontFamily like `"Linux Libertine O", serif`
const inner = newInherited.fontFamily.match(/^"(.*?)"|^'(.*?)'/);
if (inner)
newInherited.fontFamily = inner[1] || inner[2];
}
if (newInherited.strokeWidth) {
svgAttributes.strokeWidth = newInherited.strokeWidth;
}
return {
inherited: newInherited,
svgAttributes,
tagName: element.tagName,
matrix: newMatrix,
};
};
const getFittingRectangle = (originalWidth, originalHeight, targetWidth, targetHeight, preserveAspectRatio) => {
if (preserveAspectRatio === 'none') {
return { x: 0, y: 0, width: targetWidth, height: targetHeight };
}
const originalRatio = originalWidth / originalHeight;
const targetRatio = targetWidth / targetHeight;
const width = targetRatio > originalRatio ? originalRatio * targetHeight : targetWidth;
const height = targetRatio >= originalRatio ? targetHeight : targetWidth / originalRatio;
const dx = targetWidth - width;
const dy = targetHeight - height;
const [x, y] = (() => {
switch (preserveAspectRatio) {
case 'xMinYMin':
return [0, 0];
case 'xMidYMin':
return [dx / 2, 0];
case 'xMaxYMin':
return [dx, dy / 2];
case 'xMinYMid':
return [0, dy];
case 'xMaxYMid':
return [dx, dy / 2];
case 'xMinYMax':
return [0, dy];
case 'xMidYMax':
return [dx / 2, dy];
case 'xMaxYMax':
return [dx, dy];
case 'xMidYMid':
default:
return [dx / 2, dy / 2];
}
})();
return { x, y, width, height };
};
// this function should reproduce the behavior described here: https://www.w3.org/TR/SVG11/coords.html#ViewBoxAttribute
const getAspectRatioTransformation = (matrix, originalWidth, originalHeight, targetWidth, targetHeight, preserveAspectRatioProp = 'xMidYMid') => {
const [preserveAspectRatio, meetOrSlice = 'meet'] = preserveAspectRatioProp.split(' ');
const scaleX = targetWidth / originalWidth;
const scaleY = targetHeight / originalHeight;
const boxScale = combineTransformation(matrix, 'scale', [scaleX, scaleY]);
if (preserveAspectRatio === 'none') {
return {
clipBox: boxScale,
content: boxScale,
};
}
const scale = meetOrSlice === 'slice'
? Math.max(scaleX, scaleY)
: // since 'meet' is the default value, any value other than 'slice' should be handled as 'meet'
Math.min(scaleX, scaleY);
const dx = targetWidth - originalWidth * scale;
const dy = targetHeight - originalHeight * scale;
const [x, y] = (() => {
switch (preserveAspectRatio) {
case 'xMinYMin':
return [0, 0];
case 'xMidYMin':
return [dx / 2, 0];
case 'xMaxYMin':
return [dx, dy / 2];
case 'xMinYMid':
return [0, dy];
case 'xMaxYMid':
return [dx, dy / 2];
case 'xMinYMax':
return [0, dy];
case 'xMidYMax':
return [dx / 2, dy];
case 'xMaxYMax':
return [dx, dy];
case 'xMidYMid':
default:
return [dx / 2, dy / 2];
}
})();
const contentTransform = combineTransformation(combineTransformation(matrix, 'translate', [x, y]), 'scale', [scale]);
return {
clipBox: boxScale,
content: contentTransform,
};
};
const parseHTMLNode = (node, inherited, matrix, clipSpaces) => {
if (node.nodeType === node_html_better_parser_1.NodeType.COMMENT_NODE)
return [];
else if (node.nodeType === node_html_better_parser_1.NodeType.TEXT_NODE)
return [];
else if (node.tagName === 'g') {
return parseGroupNode(node, inherited, matrix, clipSpaces);
}
else if (node.tagName === 'svg') {
return parseSvgNode(node, inherited, matrix, clipSpaces);
}
else {
if (node.tagName === 'polygon') {
node.tagName = 'path';
node.attributes.d = `M${node.attributes.points}Z`;
delete node.attributes.points;
}
const attributes = parseAttributes(node, inherited, matrix);
const svgAttributes = Object.assign(Object.assign(Object.assign({}, attributes.inherited), attributes.svgAttributes), { matrix: attributes.matrix, clipSpaces });
Object.assign(node, { svgAttributes });
return [node];
}
};
const parseSvgNode = (node, inherited, matrix, clipSpaces) => {
var _a, _b;
// if the width/height aren't set, the svg will have the same dimension as the current drawing space
/* tslint:disable:no-unused-expression */
(_a = node.attributes.width) !== null && _a !== void 0 ? _a : node.setAttribute('width', inherited.viewBox.width + '');
(_b = node.attributes.height) !== null && _b !== void 0 ? _b : node.setAttribute('height', inherited.viewBox.height + '');
/* tslint:enable:no-unused-expression */
const attributes = parseAttributes(node, inherited, matrix);
const result = [];
const viewBox = node.attributes.viewBox
? parseViewBox(node.attributes.viewBox)
: node.attributes.width && node.attributes.height
? parseViewBox(`0 0 ${node.attributes.width} ${node.attributes.height}`)
: inherited.viewBox;
const x = parseFloat(node.attributes.x) || 0;
const y = parseFloat(node.attributes.y) || 0;
let newMatrix = combineTransformation(matrix, 'translate', [x, y]);
const { clipBox: clipBoxTransform, content: contentTransform } = getAspectRatioTransformation(newMatrix, viewBox.width, viewBox.height, parseFloat(node.attributes.width), parseFloat(node.attributes.height), node.attributes.preserveAspectRatio);
const topLeft = applyTransformation(clipBoxTransform, {
x: 0,
y: 0,
});
const topRight = applyTransformation(clipBoxTransform, {
x: viewBox.width,
y: 0,
});
const bottomRight = applyTransformation(clipBoxTransform, {
x: viewBox.width,
y: -viewBox.height,
});
const bottomLeft = applyTransformation(clipBoxTransform, {
x: 0,
y: -viewBox.height,
});
const baseClipSpace = {
topLeft,
topRight,
bottomRight,
bottomLeft,
};
newMatrix = combineTransformation(contentTransform, 'translate', [
-viewBox.x,
-viewBox.y,
]);
node.childNodes.forEach((child) => {
const parsedNodes = parseHTMLNode(child, Object.assign(Object.assign({}, attributes.inherited), { viewBox }), newMatrix, [...clipSpaces, baseClipSpace]);
result.push(...parsedNodes);
});
return result;
};
const parseGroupNode = (node, inherited, matrix, clipSpaces) => {
const attributes = parseAttributes(node, inherited, matrix);
const result = [];
node.childNodes.forEach((child) => {
result.push(...parseHTMLNode(child, attributes.inherited, attributes.matrix, clipSpaces));
});
return result;
};
const parseFloatValue = (value, reference = 1) => {
if (!value)
return undefined;
const v = parseFloat(value);
if (isNaN(v))
return undefined;
if (value.endsWith('%'))
return (v * reference) / 100;
return v;
};
const parseBlendMode = (blendMode) => {
switch (blendMode) {
case 'normal':
return PDFPageOptions_1.BlendMode.Normal;
case 'multiply':
return PDFPageOptions_1.BlendMode.Multiply;
case 'screen':
return PDFPageOptions_1.BlendMode.Screen;
case 'overlay':
return PDFPageOptions_1.BlendMode.Overlay;
case 'darken':
return PDFPageOptions_1.BlendMode.Darken;
case 'lighten':
return PDFPageOptions_1.BlendMode.Lighten;
case 'color-dodge':
return PDFPageOptions_1.BlendMode.ColorDodge;
case 'color-burn':
return PDFPageOptions_1.BlendMode.ColorBurn;
case 'hard-light':
return PDFPageOptions_1.BlendMode.HardLight;
case 'soft-light':
return PDFPageOptions_1.BlendMode.SoftLight;
case 'difference':
return PDFPageOptions_1.BlendMode.Difference;
case 'exclusion':
return PDFPageOptions_1.BlendMode.Exclusion;
default:
return undefined;
}
};
const parseViewBox = (viewBox) => {
if (!viewBox)
return;
const [xViewBox = 0, yViewBox = 0, widthViewBox = 1, heightViewBox = 1] = (viewBox || '')
.split(' ')
.map((val) => parseFloatValue(val));
return {
x: xViewBox,
y: yViewBox,
width: widthViewBox,
height: heightViewBox,
};
};
const parse = (svg, { width, height, fontSize }, size, matrix) => {
const htmlElement = (0, node_html_better_parser_1.parse)(svg).firstChild;
if (width)
htmlElement.setAttribute('width', width + '');
if (height)
htmlElement.setAttribute('height', height + '');
if (fontSize)
htmlElement.setAttribute('font-size', fontSize + '');
// TODO: what should be the default viewBox?
return parseHTMLNode(htmlElement, Object.assign(Object.assign({}, size), { viewBox: parseViewBox(htmlElement.attributes.viewBox || '0 0 1 1') }), matrix, []);
};
const drawSvg = (page, svg, options) => {
const pdfSvg = typeof svg === 'string' ? new PDFSvg_1.default(svg) : svg;
if (!pdfSvg.svg)
return;
const size = page.getSize();
const svgNode = (0, node_html_better_parser_1.parse)(pdfSvg.svg).querySelector('svg');
if (!svgNode) {
return console.error('This is not an svg. Ignoring: ' + pdfSvg.svg);
}
const attributes = svgNode.attributes;
const style = parseStyles(attributes.style);
const widthRaw = styleOrAttribute(attributes, style, 'width', '');
const heightRaw = styleOrAttribute(attributes, style, 'height', '');
const width = options.width !== undefined ? options.width : parseFloat(widthRaw);
const height = options.height !== undefined ? options.height : parseFloat(heightRaw);
// it's important to add the viewBox to allow svg resizing through the options
if (!attributes.viewBox) {
svgNode.setAttribute('viewBox', `0 0 ${widthRaw || width} ${heightRaw || height}`);
}
if (options.width || options.height) {
if (width !== undefined)
style.width = width + (isNaN(width) ? '' : 'px');
if (height !== undefined) {
style.height = height + (isNaN(height) ? '' : 'px');
}
svgNode.setAttribute('style', Object.entries(style) // tslint:disable-line
.map(([key, val]) => `${key}:${val};`)
.join(''));
}
const baseTransformation = [
1,
0,
0,
1,
options.x || 0,
options.y || 0,
];
const elements = parse(svgNode.outerHTML, options, size, baseTransformation);
const runners = runnersToPage(page, Object.assign(Object.assign({}, options), { images: pdfSvg.images }));
elements.forEach((elt) => {
// uncomment these lines to draw the clipSpaces
// elt.svgAttributes.clipSpaces.forEach(space => {
// page.drawLine({
// start: space.topLeft,
// end: space.topRight,
// color: parseColor('#000000')?.rgb,
// thickness: 1
// })
var _a;
// page.drawLine({
// start: space.topRight,
// end: space.bottomRight,
// color: parseColor('#000000')?.rgb,
// thickness: 1
// })
// page.drawLine({
// start: space.bottomRight,
// end: space.bottomLeft,
// color: parseColor('#000000')?.rgb,
// thickness: 1
// })
// page.drawLine({
// start: space.bottomLeft,
// end: space.topLeft,
// color: parseColor('#000000')?.rgb,
// thickness: 1
// })
// })
(_a = runners[elt.tagName]) === null || _a === void 0 ? void 0 : _a.call(runners, elt);
});
};
exports.drawSvg = drawSvg;
//# sourceMappingURL=svg.js.map