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* Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
* http://paperjs.org/
*
* Copyright (c) 2011 - 2020, Jürg Lehni & Jonathan Puckey
* http://juerglehni.com/ & https://puckey.studio/
*
* Distributed under the MIT license. See LICENSE file for details.
*
* All rights reserved.
*/
// TODO: remove eslint-disable comment and deal with errors over time
/* eslint-disable */
import { Base } from '~/straps';
import { Matrix } from '~/basic/Matrix';
import { Point } from '~/basic/Point';
import { Rectangle } from '~/basic/Rectangle';
import { Item } from '~/item/Item';
import { Project } from '~/item/Project';
import { Formatter } from '~/util/Formatter';
import { Numerical } from '~/util/Numerical';
import { UID } from '~/util/UID';
import { SvgElement } from './SvgElement';
import { SvgStyles } from './SvgStyles';
/**
* A function scope holding all the functionality needed to convert a
* Paper.js DOM to a SVG DOM.
*/
new (function () {
// TODO: Consider moving formatter into options object, and pass it along.
var formatter;
function getTransform(matrix, coordinates, center) {
// Use new Base() so we can use Base#set() on it.
var attrs = new Base(),
trans = matrix.getTranslation();
if (coordinates) {
// If the item supports x- and y- coordinates, we're taking out the
// translation part of the matrix and move it to x, y attributes, to
// produce more readable markup, and not have to use center points
// in rotate(). To do so, SVG requires us to inverse transform the
// translation point by the matrix itself, since they are provided
// in local coordinates.
var point;
if (matrix.isInvertible()) {
matrix = matrix._shiftless();
point = matrix._inverseTransform(trans);
trans = null;
} else {
point = new Point();
}
attrs[center ? 'cx' : 'x'] = point.x;
attrs[center ? 'cy' : 'y'] = point.y;
}
if (!matrix.isIdentity()) {
// See if we can decompose the matrix and can formulate it as a
// simple translate/scale/rotate command sequence.
var decomposed = matrix.decompose();
if (decomposed) {
var parts = [],
angle = decomposed.rotation,
scale = decomposed.scaling,
skew = decomposed.skewing;
if (trans && !trans.isZero()) parts.push('translate(' + formatter.point(trans) + ')');
if (angle) parts.push('rotate(' + formatter.number(angle) + ')');
if (!Numerical.isZero(scale.x - 1) || !Numerical.isZero(scale.y - 1))
parts.push('scale(' + formatter.point(scale) + ')');
if (skew.x) parts.push('skewX(' + formatter.number(skew.x) + ')');
if (skew.y) parts.push('skewY(' + formatter.number(skew.y) + ')');
attrs.transform = parts.join(' ');
} else {
attrs.transform = 'matrix(' + matrix.getValues().join(',') + ')';
}
}
return attrs;
}
function exportGroup(item, options) {
// @ts-expect-error
var attrs = getTransform(item._matrix),
children = item._children;
var node = SvgElement.create('g', attrs, formatter);
for (var i = 0, l = children.length; i < l; i++) {
var child = children[i];
// @ts-expect-error
var childNode = exportSVG(child, options);
if (childNode) {
if (child.isClipMask()) {
var clip = SvgElement.create('clipPath');
clip.appendChild(childNode);
setDefinition(child, clip, 'clip');
SvgElement.set(node, {
'clip-path': 'url(#' + clip.id + ')',
});
} else {
node.appendChild(childNode);
}
}
}
return node;
}
function exportRaster(item, options) {
// @ts-expect-error
var attrs = getTransform(item._matrix, true),
size = item.getSize(),
image = item.getImage();
// Take into account that rasters are centered:
attrs.x -= size.width / 2;
attrs.y -= size.height / 2;
attrs.width = size.width;
attrs.height = size.height;
attrs.href = (options.embedImages == false && image && image.src) || item.toDataURL();
return SvgElement.create('image', attrs, formatter);
}
function exportPath(item, options) {
var matchShapes = options.matchShapes;
if (matchShapes) {
var shape = item.toShape(false);
// @ts-expect-error
if (shape) return exportShape(shape, options);
}
var segments = item._segments,
length = segments.length,
type,
// @ts-expect-error
attrs = getTransform(item._matrix);
if (matchShapes && length >= 2 && !item.hasHandles()) {
if (length > 2) {
type = item._closed ? 'polygon' : 'polyline';
var parts = [];
for (var i = 0; i < length; i++) {
parts.push(formatter.point(segments[i]._point));
}
attrs.points = parts.join(' ');
} else {
type = 'line';
var start = segments[0]._point,
end = segments[1]._point;
attrs.set({
x1: start.x,
y1: start.y,
x2: end.x,
y2: end.y,
});
}
} else {
type = 'path';
attrs.d = item.getPathData(null, options.precision);
}
return SvgElement.create(type, attrs, formatter);
}
function exportShape(item) {
var type = item._type,
radius = item._radius,
attrs = getTransform(item._matrix, true, type !== 'rectangle');
if (type === 'rectangle') {
type = 'rect'; // SVG
var size = item._size,
width = size.width,
height = size.height;
attrs.x -= width / 2;
attrs.y -= height / 2;
attrs.width = width;
attrs.height = height;
if (radius.isZero()) radius = null;
}
if (radius) {
if (type === 'circle') {
attrs.r = radius;
} else {
attrs.rx = radius.width;
attrs.ry = radius.height;
}
}
return SvgElement.create(type, attrs, formatter);
}
function exportCompoundPath(item, options) {
// @ts-expect-error
var attrs = getTransform(item._matrix);
var data = item.getPathData(null, options.precision);
if (data) attrs.d = data;
return SvgElement.create('path', attrs, formatter);
}
function exportSymbolItem(item, options) {
// @ts-expect-error
var attrs = getTransform(item._matrix, true),
definition = item._definition,
node = getDefinition(definition, 'symbol'),
definitionItem = definition._item,
bounds = definitionItem.getStrokeBounds();
if (!node) {
node = SvgElement.create('symbol', {
viewBox: formatter.rectangle(bounds),
});
// @ts-expect-error
node.appendChild(exportSVG(definitionItem, options));
setDefinition(definition, node, 'symbol');
}
attrs.href = '#' + node.id;
attrs.x += bounds.x;
attrs.y += bounds.y;
attrs.width = bounds.width;
attrs.height = bounds.height;
attrs.overflow = 'visible';
return SvgElement.create('use', attrs, formatter);
}
function exportGradient(color) {
// NOTE: As long as the fillTransform attribute is not implemented,
// we need to create a separate gradient object for each gradient,
// even when they share the same gradient definition.
// http://www.svgopen.org/2011/papers/20-Separating_gradients_from_geometry/
// TODO: Implement gradient merging in SvgImport
var gradientNode = getDefinition(color, 'color');
if (!gradientNode) {
var gradient = color.getGradient(),
radial = gradient._radial,
origin = color.getOrigin(),
destination = color.getDestination(),
attrs;
if (radial) {
attrs = {
cx: origin.x,
cy: origin.y,
r: origin.getDistance(destination),
};
var highlight = color.getHighlight();
if (highlight) {
attrs.fx = highlight.x;
attrs.fy = highlight.y;
}
} else {
attrs = {
x1: origin.x,
y1: origin.y,
x2: destination.x,
y2: destination.y,
};
}
attrs.gradientUnits = 'userSpaceOnUse';
gradientNode = SvgElement.create((radial ? 'radial' : 'linear') + 'Gradient', attrs, formatter);
var stops = gradient._stops;
for (var i = 0, l = stops.length; i < l; i++) {
var stop = stops[i],
stopColor = stop._color,
alpha = stopColor.getAlpha(),
offset = stop._offset;
attrs = {
offset: offset == null ? i / (l - 1) : offset,
};
if (stopColor) attrs['stop-color'] = stopColor.toCSS(true);
// See applyStyle for an explanation of why there are separated
// opacity / color attributes.
if (alpha < 1) attrs['stop-opacity'] = alpha;
gradientNode.appendChild(SvgElement.create('stop', attrs, formatter));
}
setDefinition(color, gradientNode, 'color');
}
return 'url(#' + gradientNode.id + ')';
}
function exportText(item) {
// @ts-expect-error
var node = SvgElement.create('text', getTransform(item._matrix, true), formatter);
node.textContent = item._content;
return node;
}
var exporters = {
Group: exportGroup,
Layer: exportGroup,
Raster: exportRaster,
Path: exportPath,
Shape: exportShape,
CompoundPath: exportCompoundPath,
SymbolItem: exportSymbolItem,
PointText: exportText,
};
function applyStyle(item, node, options, isRoot) {
var attrs: any = {},
parent = !isRoot && item.getParent(),
style = [];
if (item._name != null) attrs.id = item._name;
Base.each(SvgStyles, function (entry) {
// Get a given style only if it differs from the value on the parent
// (A layer or group which can have style values in SVG).
var get = entry.get,
type = entry.type,
value = item[get]();
if (
entry.exportFilter
? entry.exportFilter(item, value)
: options.reduceAttributes == false || !parent || !Base.equals(parent[get](), value)
) {
if (type === 'color' && value != null) {
// Support for css-style rgba() values is not in SVG 1.1, so
// separate the alpha value of colors with alpha into the
// separate fill- / stroke-opacity attribute:
var alpha = value.getAlpha();
if (alpha < 1) attrs[entry.attribute + '-opacity'] = alpha;
}
if (type === 'style') {
style.push(entry.attribute + ': ' + value);
} else {
attrs[entry.attribute] =
value == null
? 'none'
: type === 'color'
? value.gradient
? // true for noAlpha, see above
// @ts-expect-error
exportGradient(value, item)
: value.toCSS(true)
: type === 'array'
? value.join(',')
: type === 'lookup'
? entry.toSVG[value]
: value;
}
}
});
if (style.length) attrs.style = style.join(';');
if (attrs.opacity === 1) delete attrs.opacity;
if (!item._visible) attrs.visibility = 'hidden';
return SvgElement.set(node, attrs, formatter);
}
var definitions;
function getDefinition(item, type) {
if (!definitions) definitions = { ids: {}, svgs: {} };
// Use #__id for items that don't have internal #_id properties (Color),
// and give them ids from their own private id pool named 'svg'.
return item && definitions.svgs[type + '-' + (item._id || item.__id || (item.__id = UID.get('svg')))];
}
function setDefinition(item, node, type) {
// Make sure the definitions lookup is created before we use it.
// This is required by 'clip', where getDefinition() is not called.
// @ts-expect-error
if (!definitions) getDefinition();
// Have different id ranges per type
var typeId = (definitions.ids[type] = (definitions.ids[type] || 0) + 1);
// Give the svg node an id, and link to it from the item id.
node.id = type + '-' + typeId;
// See getDefinition() for an explanation of #__id:
definitions.svgs[type + '-' + (item._id || item.__id)] = node;
}
function exportDefinitions(node, options) {
var svg = node,
defs = null;
if (definitions) {
// We can only use svg nodes as definition containers. Have the loop
// produce one if it's a single item of another type (when calling
// #exportSVG() on an item rather than a whole project)
// jsdom in Node.js uses uppercase values for nodeName...
svg = node.nodeName.toLowerCase() === 'svg' && node;
for (var i in definitions.svgs) {
// This code is inside the loop so we only create a container if
// we actually have svgs.
if (!defs) {
if (!svg) {
svg = SvgElement.create('svg');
svg.appendChild(node);
}
defs = svg.insertBefore(SvgElement.create('defs'), svg.firstChild);
}
defs.appendChild(definitions.svgs[i]);
}
// Clear definitions at the end of export
definitions = null;
}
return options.asString ? new globalThis.XMLSerializer().serializeToString(svg) : svg;
}
function exportSVG(item, options, isRoot) {
var exporter = exporters[item._class],
node = exporter && exporter(item, options);
if (node) {
// Support onExportItem callback, to provide mechanism to handle
// special attributes (e.g. inkscape:transform-center)
var onExport = options.onExport;
if (onExport) node = onExport(item, node, options) || node;
var data = JSON.stringify(item._data);
if (data && data !== '{}' && data !== 'null') node.setAttribute('data-paper-data', data);
}
return node && applyStyle(item, node, options, isRoot);
}
function setOptions(options) {
if (!options) options = {};
formatter = new Formatter(options.precision);
return options;
}
Item.inject({
exportSVG: function (options) {
options = setOptions(options);
return exportDefinitions(exportSVG(this, options, true), options);
},
});
Project.inject({
exportSVG: function (options) {
options = setOptions(options);
var children = this._children,
view = this.getView(),
bounds = Base.pick(options.bounds, 'view'),
mx = options.matrix || (bounds === 'view' && view._matrix),
matrix = mx && Matrix.read([mx]),
rect =
bounds === 'view'
? new Rectangle([0, 0], view.getViewSize())
: bounds === 'content'
? Item._getBounds(children, matrix, { stroke: true }).rect
: Rectangle.read([bounds], 0, { readNull: true }),
attrs: any = {
version: '1.1',
xmlns: SvgElement.svg,
'xmlns:xlink': SvgElement.xlink,
};
if (rect) {
attrs.width = rect.width;
attrs.height = rect.height;
if (rect.x || rect.x === 0 || rect.y || rect.y === 0) attrs.viewBox = formatter.rectangle(rect);
}
var node = SvgElement.create('svg', attrs, formatter),
parent = node;
// If the view has a transformation, wrap all layers in a group with
// that transformation applied to.
if (matrix && !matrix.isIdentity()) {
// @ts-expect-error
parent = node.appendChild(SvgElement.create('g', getTransform(matrix), formatter));
}
for (var i = 0, l = children.length; i < l; i++) {
parent.appendChild(exportSVG(children[i], options, true));
}
return exportDefinitions(node, options);
},
});
})();
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