971 lines
46 KiB
JavaScript
971 lines
46 KiB
JavaScript
/* globals SVGPathSeg, SVGPathSegMovetoRel, SVGPathSegMovetoAbs,
|
|
SVGPathSegMovetoRel, SVGPathSegLinetoRel, SVGPathSegLinetoAbs,
|
|
SVGPathSegLinetoHorizontalRel, SVGPathSegLinetoHorizontalAbs,
|
|
SVGPathSegLinetoVerticalRel, SVGPathSegLinetoVerticalAbs,
|
|
SVGPathSegClosePath, SVGPathSegCurvetoCubicRel,
|
|
SVGPathSegCurvetoCubicAbs, SVGPathSegCurvetoCubicSmoothRel,
|
|
SVGPathSegCurvetoCubicSmoothAbs, SVGPathSegCurvetoQuadraticRel,
|
|
SVGPathSegCurvetoQuadraticAbs, SVGPathSegCurvetoQuadraticSmoothRel,
|
|
SVGPathSegCurvetoQuadraticSmoothAbs, SVGPathSegArcRel, SVGPathSegArcAbs */
|
|
/**
|
|
* SVGPathSeg API polyfill
|
|
* https://github.com/progers/pathseg
|
|
*
|
|
* This is a drop-in replacement for the `SVGPathSeg` and `SVGPathSegList` APIs
|
|
* that were removed from SVG2 ({@link https://lists.w3.org/Archives/Public/www-svg/2015Jun/0044.html}),
|
|
* including the latest spec changes which were implemented in Firefox 43 and
|
|
* Chrome 46.
|
|
*/
|
|
/* eslint-disable no-shadow, class-methods-use-this */
|
|
// Linting: We avoid `no-shadow` as ESLint thinks these are still available globals
|
|
// Linting: We avoid `class-methods-use-this` as this is a polyfill that must
|
|
// follow the conventions
|
|
(() => {
|
|
if (!('SVGPathSeg' in window)) {
|
|
// Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSeg
|
|
class SVGPathSeg {
|
|
constructor (type, typeAsLetter, owningPathSegList) {
|
|
this.pathSegType = type;
|
|
this.pathSegTypeAsLetter = typeAsLetter;
|
|
this._owningPathSegList = owningPathSegList;
|
|
}
|
|
// Notify owning PathSegList on any changes so they can be synchronized back to the path element.
|
|
_segmentChanged () {
|
|
if (this._owningPathSegList) {
|
|
this._owningPathSegList.segmentChanged(this);
|
|
}
|
|
}
|
|
}
|
|
SVGPathSeg.prototype.classname = 'SVGPathSeg';
|
|
|
|
SVGPathSeg.PATHSEG_UNKNOWN = 0;
|
|
SVGPathSeg.PATHSEG_CLOSEPATH = 1;
|
|
SVGPathSeg.PATHSEG_MOVETO_ABS = 2;
|
|
SVGPathSeg.PATHSEG_MOVETO_REL = 3;
|
|
SVGPathSeg.PATHSEG_LINETO_ABS = 4;
|
|
SVGPathSeg.PATHSEG_LINETO_REL = 5;
|
|
SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS = 6;
|
|
SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL = 7;
|
|
SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS = 8;
|
|
SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL = 9;
|
|
SVGPathSeg.PATHSEG_ARC_ABS = 10;
|
|
SVGPathSeg.PATHSEG_ARC_REL = 11;
|
|
SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS = 12;
|
|
SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL = 13;
|
|
SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS = 14;
|
|
SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL = 15;
|
|
SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS = 16;
|
|
SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL = 17;
|
|
SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS = 18;
|
|
SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL = 19;
|
|
|
|
class SVGPathSegClosePath extends SVGPathSeg {
|
|
constructor (owningPathSegList) {
|
|
super(SVGPathSeg.PATHSEG_CLOSEPATH, 'z', owningPathSegList);
|
|
}
|
|
toString () { return '[object SVGPathSegClosePath]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter; }
|
|
clone () { return new SVGPathSegClosePath(undefined); }
|
|
}
|
|
|
|
class SVGPathSegMovetoAbs extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y) {
|
|
super(SVGPathSeg.PATHSEG_MOVETO_ABS, 'M', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
}
|
|
toString () { return '[object SVGPathSegMovetoAbs]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegMovetoAbs(undefined, this._x, this._y); }
|
|
}
|
|
Object.defineProperties(SVGPathSegMovetoAbs.prototype, {
|
|
x: {
|
|
get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true
|
|
},
|
|
y: {
|
|
get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true
|
|
}
|
|
});
|
|
|
|
class SVGPathSegMovetoRel extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y) {
|
|
super(SVGPathSeg.PATHSEG_MOVETO_REL, 'm', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
}
|
|
toString () { return '[object SVGPathSegMovetoRel]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegMovetoRel(undefined, this._x, this._y); }
|
|
}
|
|
Object.defineProperties(SVGPathSegMovetoRel.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegLinetoAbs extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y) {
|
|
super(SVGPathSeg.PATHSEG_LINETO_ABS, 'L', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
}
|
|
toString () { return '[object SVGPathSegLinetoAbs]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegLinetoAbs(undefined, this._x, this._y); }
|
|
}
|
|
Object.defineProperties(SVGPathSegLinetoAbs.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegLinetoRel extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y) {
|
|
super(SVGPathSeg.PATHSEG_LINETO_REL, 'l', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
}
|
|
toString () { return '[object SVGPathSegLinetoRel]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegLinetoRel(undefined, this._x, this._y); }
|
|
}
|
|
Object.defineProperties(SVGPathSegLinetoRel.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegCurvetoCubicAbs extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y, x1, y1, x2, y2) {
|
|
super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS, 'C', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
this._x1 = x1;
|
|
this._y1 = y1;
|
|
this._x2 = x2;
|
|
this._y2 = y2;
|
|
}
|
|
toString () { return '[object SVGPathSegCurvetoCubicAbs]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegCurvetoCubicAbs(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }
|
|
}
|
|
Object.defineProperties(SVGPathSegCurvetoCubicAbs.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},
|
|
x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},
|
|
y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},
|
|
x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},
|
|
y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegCurvetoCubicRel extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y, x1, y1, x2, y2) {
|
|
super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL, 'c', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
this._x1 = x1;
|
|
this._y1 = y1;
|
|
this._x2 = x2;
|
|
this._y2 = y2;
|
|
}
|
|
toString () { return '[object SVGPathSegCurvetoCubicRel]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegCurvetoCubicRel(undefined, this._x, this._y, this._x1, this._y1, this._x2, this._y2); }
|
|
}
|
|
Object.defineProperties(SVGPathSegCurvetoCubicRel.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},
|
|
x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},
|
|
y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true},
|
|
x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},
|
|
y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegCurvetoQuadraticAbs extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y, x1, y1) {
|
|
super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS, 'Q', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
this._x1 = x1;
|
|
this._y1 = y1;
|
|
}
|
|
toString () { return '[object SVGPathSegCurvetoQuadraticAbs]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegCurvetoQuadraticAbs(undefined, this._x, this._y, this._x1, this._y1); }
|
|
}
|
|
Object.defineProperties(SVGPathSegCurvetoQuadraticAbs.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},
|
|
x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},
|
|
y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegCurvetoQuadraticRel extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y, x1, y1) {
|
|
super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL, 'q', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
this._x1 = x1;
|
|
this._y1 = y1;
|
|
}
|
|
toString () { return '[object SVGPathSegCurvetoQuadraticRel]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x1 + ' ' + this._y1 + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegCurvetoQuadraticRel(undefined, this._x, this._y, this._x1, this._y1); }
|
|
}
|
|
Object.defineProperties(SVGPathSegCurvetoQuadraticRel.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},
|
|
x1: {get () { return this._x1; }, set (x1) { this._x1 = x1; this._segmentChanged(); }, enumerable: true},
|
|
y1: {get () { return this._y1; }, set (y1) { this._y1 = y1; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegArcAbs extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {
|
|
super(SVGPathSeg.PATHSEG_ARC_ABS, 'A', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
this._r1 = r1;
|
|
this._r2 = r2;
|
|
this._angle = angle;
|
|
this._largeArcFlag = largeArcFlag;
|
|
this._sweepFlag = sweepFlag;
|
|
}
|
|
toString () { return '[object SVGPathSegArcAbs]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegArcAbs(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }
|
|
}
|
|
Object.defineProperties(SVGPathSegArcAbs.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},
|
|
r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},
|
|
r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},
|
|
angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},
|
|
largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},
|
|
sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegArcRel extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y, r1, r2, angle, largeArcFlag, sweepFlag) {
|
|
super(SVGPathSeg.PATHSEG_ARC_REL, 'a', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
this._r1 = r1;
|
|
this._r2 = r2;
|
|
this._angle = angle;
|
|
this._largeArcFlag = largeArcFlag;
|
|
this._sweepFlag = sweepFlag;
|
|
}
|
|
toString () { return '[object SVGPathSegArcRel]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._r1 + ' ' + this._r2 + ' ' + this._angle + ' ' + (this._largeArcFlag ? '1' : '0') + ' ' + (this._sweepFlag ? '1' : '0') + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegArcRel(undefined, this._x, this._y, this._r1, this._r2, this._angle, this._largeArcFlag, this._sweepFlag); }
|
|
}
|
|
Object.defineProperties(SVGPathSegArcRel.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},
|
|
r1: {get () { return this._r1; }, set (r1) { this._r1 = r1; this._segmentChanged(); }, enumerable: true},
|
|
r2: {get () { return this._r2; }, set (r2) { this._r2 = r2; this._segmentChanged(); }, enumerable: true},
|
|
angle: {get () { return this._angle; }, set (angle) { this._angle = angle; this._segmentChanged(); }, enumerable: true},
|
|
largeArcFlag: {get () { return this._largeArcFlag; }, set (largeArcFlag) { this._largeArcFlag = largeArcFlag; this._segmentChanged(); }, enumerable: true},
|
|
sweepFlag: {get () { return this._sweepFlag; }, set (sweepFlag) { this._sweepFlag = sweepFlag; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegLinetoHorizontalAbs extends SVGPathSeg {
|
|
constructor (owningPathSegList, x) {
|
|
super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS, 'H', owningPathSegList);
|
|
this._x = x;
|
|
}
|
|
toString () { return '[object SVGPathSegLinetoHorizontalAbs]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }
|
|
clone () { return new SVGPathSegLinetoHorizontalAbs(undefined, this._x); }
|
|
}
|
|
Object.defineProperty(SVGPathSegLinetoHorizontalAbs.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});
|
|
|
|
class SVGPathSegLinetoHorizontalRel extends SVGPathSeg {
|
|
constructor (owningPathSegList, x) {
|
|
super(SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL, 'h', owningPathSegList);
|
|
this._x = x;
|
|
}
|
|
toString () { return '[object SVGPathSegLinetoHorizontalRel]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x; }
|
|
clone () { return new SVGPathSegLinetoHorizontalRel(undefined, this._x); }
|
|
}
|
|
Object.defineProperty(SVGPathSegLinetoHorizontalRel.prototype, 'x', {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true});
|
|
|
|
class SVGPathSegLinetoVerticalAbs extends SVGPathSeg {
|
|
constructor (owningPathSegList, y) {
|
|
super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS, 'V', owningPathSegList);
|
|
this._y = y;
|
|
}
|
|
toString () { return '[object SVGPathSegLinetoVerticalAbs]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }
|
|
clone () { return new SVGPathSegLinetoVerticalAbs(undefined, this._y); }
|
|
}
|
|
Object.defineProperty(SVGPathSegLinetoVerticalAbs.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});
|
|
|
|
class SVGPathSegLinetoVerticalRel extends SVGPathSeg {
|
|
constructor (owningPathSegList, y) {
|
|
super(SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL, 'v', owningPathSegList);
|
|
this._y = y;
|
|
}
|
|
toString () { return '[object SVGPathSegLinetoVerticalRel]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._y; }
|
|
clone () { return new SVGPathSegLinetoVerticalRel(undefined, this._y); }
|
|
}
|
|
Object.defineProperty(SVGPathSegLinetoVerticalRel.prototype, 'y', {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true});
|
|
|
|
class SVGPathSegCurvetoCubicSmoothAbs extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y, x2, y2) {
|
|
super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS, 'S', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
this._x2 = x2;
|
|
this._y2 = y2;
|
|
}
|
|
toString () { return '[object SVGPathSegCurvetoCubicSmoothAbs]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, this._x, this._y, this._x2, this._y2); }
|
|
}
|
|
Object.defineProperties(SVGPathSegCurvetoCubicSmoothAbs.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},
|
|
x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},
|
|
y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegCurvetoCubicSmoothRel extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y, x2, y2) {
|
|
super(SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL, 's', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
this._x2 = x2;
|
|
this._y2 = y2;
|
|
}
|
|
toString () { return '[object SVGPathSegCurvetoCubicSmoothRel]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x2 + ' ' + this._y2 + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegCurvetoCubicSmoothRel(undefined, this._x, this._y, this._x2, this._y2); }
|
|
}
|
|
Object.defineProperties(SVGPathSegCurvetoCubicSmoothRel.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true},
|
|
x2: {get () { return this._x2; }, set (x2) { this._x2 = x2; this._segmentChanged(); }, enumerable: true},
|
|
y2: {get () { return this._y2; }, set (y2) { this._y2 = y2; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegCurvetoQuadraticSmoothAbs extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y) {
|
|
super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS, 'T', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
}
|
|
toString () { return '[object SVGPathSegCurvetoQuadraticSmoothAbs]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, this._x, this._y); }
|
|
}
|
|
Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothAbs.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
class SVGPathSegCurvetoQuadraticSmoothRel extends SVGPathSeg {
|
|
constructor (owningPathSegList, x, y) {
|
|
super(SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL, 't', owningPathSegList);
|
|
this._x = x;
|
|
this._y = y;
|
|
}
|
|
toString () { return '[object SVGPathSegCurvetoQuadraticSmoothRel]'; }
|
|
_asPathString () { return this.pathSegTypeAsLetter + ' ' + this._x + ' ' + this._y; }
|
|
clone () { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, this._x, this._y); }
|
|
}
|
|
Object.defineProperties(SVGPathSegCurvetoQuadraticSmoothRel.prototype, {
|
|
x: {get () { return this._x; }, set (x) { this._x = x; this._segmentChanged(); }, enumerable: true},
|
|
y: {get () { return this._y; }, set (y) { this._y = y; this._segmentChanged(); }, enumerable: true}
|
|
});
|
|
|
|
// Add createSVGPathSeg* functions to SVGPathElement.
|
|
// Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathElement.
|
|
SVGPathElement.prototype.createSVGPathSegClosePath = function () { return new SVGPathSegClosePath(undefined); };
|
|
SVGPathElement.prototype.createSVGPathSegMovetoAbs = function (x, y) { return new SVGPathSegMovetoAbs(undefined, x, y); };
|
|
SVGPathElement.prototype.createSVGPathSegMovetoRel = function (x, y) { return new SVGPathSegMovetoRel(undefined, x, y); };
|
|
SVGPathElement.prototype.createSVGPathSegLinetoAbs = function (x, y) { return new SVGPathSegLinetoAbs(undefined, x, y); };
|
|
SVGPathElement.prototype.createSVGPathSegLinetoRel = function (x, y) { return new SVGPathSegLinetoRel(undefined, x, y); };
|
|
SVGPathElement.prototype.createSVGPathSegCurvetoCubicAbs = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicAbs(undefined, x, y, x1, y1, x2, y2); };
|
|
SVGPathElement.prototype.createSVGPathSegCurvetoCubicRel = function (x, y, x1, y1, x2, y2) { return new SVGPathSegCurvetoCubicRel(undefined, x, y, x1, y1, x2, y2); };
|
|
SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticAbs = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticAbs(undefined, x, y, x1, y1); };
|
|
SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticRel = function (x, y, x1, y1) { return new SVGPathSegCurvetoQuadraticRel(undefined, x, y, x1, y1); };
|
|
SVGPathElement.prototype.createSVGPathSegArcAbs = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcAbs(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };
|
|
SVGPathElement.prototype.createSVGPathSegArcRel = function (x, y, r1, r2, angle, largeArcFlag, sweepFlag) { return new SVGPathSegArcRel(undefined, x, y, r1, r2, angle, largeArcFlag, sweepFlag); };
|
|
SVGPathElement.prototype.createSVGPathSegLinetoHorizontalAbs = function (x) { return new SVGPathSegLinetoHorizontalAbs(undefined, x); };
|
|
SVGPathElement.prototype.createSVGPathSegLinetoHorizontalRel = function (x) { return new SVGPathSegLinetoHorizontalRel(undefined, x); };
|
|
SVGPathElement.prototype.createSVGPathSegLinetoVerticalAbs = function (y) { return new SVGPathSegLinetoVerticalAbs(undefined, y); };
|
|
SVGPathElement.prototype.createSVGPathSegLinetoVerticalRel = function (y) { return new SVGPathSegLinetoVerticalRel(undefined, y); };
|
|
SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothAbs = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothAbs(undefined, x, y, x2, y2); };
|
|
SVGPathElement.prototype.createSVGPathSegCurvetoCubicSmoothRel = function (x, y, x2, y2) { return new SVGPathSegCurvetoCubicSmoothRel(undefined, x, y, x2, y2); };
|
|
SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothAbs = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothAbs(undefined, x, y); };
|
|
SVGPathElement.prototype.createSVGPathSegCurvetoQuadraticSmoothRel = function (x, y) { return new SVGPathSegCurvetoQuadraticSmoothRel(undefined, x, y); };
|
|
|
|
if (!('getPathSegAtLength' in SVGPathElement.prototype)) {
|
|
// Add getPathSegAtLength to SVGPathElement.
|
|
// Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-__svg__SVGPathElement__getPathSegAtLength
|
|
// This polyfill requires SVGPathElement.getTotalLength to implement the distance-along-a-path algorithm.
|
|
SVGPathElement.prototype.getPathSegAtLength = function (distance) {
|
|
if (distance === undefined || !isFinite(distance)) {
|
|
throw new Error('Invalid arguments.');
|
|
}
|
|
|
|
const measurementElement = document.createElementNS('http://www.w3.org/2000/svg', 'path');
|
|
measurementElement.setAttribute('d', this.getAttribute('d'));
|
|
let lastPathSegment = measurementElement.pathSegList.numberOfItems - 1;
|
|
|
|
// If the path is empty, return 0.
|
|
if (lastPathSegment <= 0) {
|
|
return 0;
|
|
}
|
|
|
|
do {
|
|
measurementElement.pathSegList.removeItem(lastPathSegment);
|
|
if (distance > measurementElement.getTotalLength()) {
|
|
break;
|
|
}
|
|
lastPathSegment--;
|
|
} while (lastPathSegment > 0);
|
|
return lastPathSegment;
|
|
};
|
|
}
|
|
|
|
window.SVGPathSeg = SVGPathSeg;
|
|
window.SVGPathSegClosePath = SVGPathSegClosePath;
|
|
window.SVGPathSegMovetoAbs = SVGPathSegMovetoAbs;
|
|
window.SVGPathSegMovetoRel = SVGPathSegMovetoRel;
|
|
window.SVGPathSegLinetoAbs = SVGPathSegLinetoAbs;
|
|
window.SVGPathSegLinetoRel = SVGPathSegLinetoRel;
|
|
window.SVGPathSegCurvetoCubicAbs = SVGPathSegCurvetoCubicAbs;
|
|
window.SVGPathSegCurvetoCubicRel = SVGPathSegCurvetoCubicRel;
|
|
window.SVGPathSegCurvetoQuadraticAbs = SVGPathSegCurvetoQuadraticAbs;
|
|
window.SVGPathSegCurvetoQuadraticRel = SVGPathSegCurvetoQuadraticRel;
|
|
window.SVGPathSegArcAbs = SVGPathSegArcAbs;
|
|
window.SVGPathSegArcRel = SVGPathSegArcRel;
|
|
window.SVGPathSegLinetoHorizontalAbs = SVGPathSegLinetoHorizontalAbs;
|
|
window.SVGPathSegLinetoHorizontalRel = SVGPathSegLinetoHorizontalRel;
|
|
window.SVGPathSegLinetoVerticalAbs = SVGPathSegLinetoVerticalAbs;
|
|
window.SVGPathSegLinetoVerticalRel = SVGPathSegLinetoVerticalRel;
|
|
window.SVGPathSegCurvetoCubicSmoothAbs = SVGPathSegCurvetoCubicSmoothAbs;
|
|
window.SVGPathSegCurvetoCubicSmoothRel = SVGPathSegCurvetoCubicSmoothRel;
|
|
window.SVGPathSegCurvetoQuadraticSmoothAbs = SVGPathSegCurvetoQuadraticSmoothAbs;
|
|
window.SVGPathSegCurvetoQuadraticSmoothRel = SVGPathSegCurvetoQuadraticSmoothRel;
|
|
}
|
|
|
|
// Checking for SVGPathSegList in window checks for the case of an implementation without the
|
|
// SVGPathSegList API.
|
|
// The second check for appendItem is specific to Firefox 59+ which removed only parts of the
|
|
// SVGPathSegList API (e.g., appendItem). In this case we need to re-implement the entire API
|
|
// so the polyfill data (i.e., _list) is used throughout.
|
|
if (!('SVGPathSegList' in window) || !('appendItem' in window.SVGPathSegList.prototype)) {
|
|
// Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGPathSegList
|
|
class SVGPathSegList {
|
|
constructor (pathElement) {
|
|
this._pathElement = pathElement;
|
|
this._list = this._parsePath(this._pathElement.getAttribute('d'));
|
|
|
|
// Use a MutationObserver to catch changes to the path's "d" attribute.
|
|
this._mutationObserverConfig = {attributes: true, attributeFilter: ['d']};
|
|
this._pathElementMutationObserver = new MutationObserver(this._updateListFromPathMutations.bind(this));
|
|
this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);
|
|
}
|
|
// Process any pending mutations to the path element and update the list as needed.
|
|
// This should be the first call of all public functions and is needed because
|
|
// MutationObservers are not synchronous so we can have pending asynchronous mutations.
|
|
_checkPathSynchronizedToList () {
|
|
this._updateListFromPathMutations(this._pathElementMutationObserver.takeRecords());
|
|
}
|
|
|
|
_updateListFromPathMutations (mutationRecords) {
|
|
if (!this._pathElement) {
|
|
return;
|
|
}
|
|
let hasPathMutations = false;
|
|
mutationRecords.forEach((record) => {
|
|
if (record.attributeName === 'd') {
|
|
hasPathMutations = true;
|
|
}
|
|
});
|
|
if (hasPathMutations) {
|
|
this._list = this._parsePath(this._pathElement.getAttribute('d'));
|
|
}
|
|
}
|
|
|
|
// Serialize the list and update the path's 'd' attribute.
|
|
_writeListToPath () {
|
|
this._pathElementMutationObserver.disconnect();
|
|
this._pathElement.setAttribute('d', SVGPathSegList._pathSegArrayAsString(this._list));
|
|
this._pathElementMutationObserver.observe(this._pathElement, this._mutationObserverConfig);
|
|
}
|
|
|
|
// When a path segment changes the list needs to be synchronized back to the path element.
|
|
segmentChanged (pathSeg) {
|
|
this._writeListToPath();
|
|
}
|
|
|
|
clear () {
|
|
this._checkPathSynchronizedToList();
|
|
|
|
this._list.forEach((pathSeg) => {
|
|
pathSeg._owningPathSegList = null;
|
|
});
|
|
this._list = [];
|
|
this._writeListToPath();
|
|
}
|
|
|
|
initialize (newItem) {
|
|
this._checkPathSynchronizedToList();
|
|
|
|
this._list = [newItem];
|
|
newItem._owningPathSegList = this;
|
|
this._writeListToPath();
|
|
return newItem;
|
|
}
|
|
|
|
_checkValidIndex (index) {
|
|
if (isNaN(index) || index < 0 || index >= this.numberOfItems) {
|
|
throw new Error('INDEX_SIZE_ERR');
|
|
}
|
|
}
|
|
|
|
getItem (index) {
|
|
this._checkPathSynchronizedToList();
|
|
|
|
this._checkValidIndex(index);
|
|
return this._list[index];
|
|
}
|
|
|
|
insertItemBefore (newItem, index) {
|
|
this._checkPathSynchronizedToList();
|
|
|
|
// Spec: If the index is greater than or equal to numberOfItems, then the new item is appended to the end of the list.
|
|
if (index > this.numberOfItems) {
|
|
index = this.numberOfItems;
|
|
}
|
|
if (newItem._owningPathSegList) {
|
|
// SVG2 spec says to make a copy.
|
|
newItem = newItem.clone();
|
|
}
|
|
this._list.splice(index, 0, newItem);
|
|
newItem._owningPathSegList = this;
|
|
this._writeListToPath();
|
|
return newItem;
|
|
}
|
|
|
|
replaceItem (newItem, index) {
|
|
this._checkPathSynchronizedToList();
|
|
|
|
if (newItem._owningPathSegList) {
|
|
// SVG2 spec says to make a copy.
|
|
newItem = newItem.clone();
|
|
}
|
|
this._checkValidIndex(index);
|
|
this._list[index] = newItem;
|
|
newItem._owningPathSegList = this;
|
|
this._writeListToPath();
|
|
return newItem;
|
|
}
|
|
|
|
removeItem (index) {
|
|
this._checkPathSynchronizedToList();
|
|
|
|
this._checkValidIndex(index);
|
|
const item = this._list[index];
|
|
this._list.splice(index, 1);
|
|
this._writeListToPath();
|
|
return item;
|
|
}
|
|
|
|
appendItem (newItem) {
|
|
this._checkPathSynchronizedToList();
|
|
|
|
if (newItem._owningPathSegList) {
|
|
// SVG2 spec says to make a copy.
|
|
newItem = newItem.clone();
|
|
}
|
|
this._list.push(newItem);
|
|
newItem._owningPathSegList = this;
|
|
// TODO: Optimize this to just append to the existing attribute.
|
|
this._writeListToPath();
|
|
return newItem;
|
|
}
|
|
|
|
// This closely follows SVGPathParser::parsePath from Source/core/svg/SVGPathParser.cpp.
|
|
_parsePath (string) {
|
|
if (!string || !string.length) {
|
|
return [];
|
|
}
|
|
|
|
const owningPathSegList = this; // eslint-disable-line consistent-this
|
|
|
|
class Builder {
|
|
constructor () {
|
|
this.pathSegList = [];
|
|
}
|
|
appendSegment (pathSeg) {
|
|
this.pathSegList.push(pathSeg);
|
|
}
|
|
}
|
|
|
|
class Source {
|
|
constructor (string) {
|
|
this._string = string;
|
|
this._currentIndex = 0;
|
|
this._endIndex = this._string.length;
|
|
this._previousCommand = SVGPathSeg.PATHSEG_UNKNOWN;
|
|
|
|
this._skipOptionalSpaces();
|
|
}
|
|
_isCurrentSpace () {
|
|
const character = this._string[this._currentIndex];
|
|
return character <= ' ' && (character === ' ' || character === '\n' || character === '\t' || character === '\r' || character === '\f');
|
|
}
|
|
|
|
_skipOptionalSpaces () {
|
|
while (this._currentIndex < this._endIndex && this._isCurrentSpace()) {
|
|
this._currentIndex++;
|
|
}
|
|
return this._currentIndex < this._endIndex;
|
|
}
|
|
|
|
_skipOptionalSpacesOrDelimiter () {
|
|
if (this._currentIndex < this._endIndex && !this._isCurrentSpace() && this._string.charAt(this._currentIndex) !== ',') {
|
|
return false;
|
|
}
|
|
if (this._skipOptionalSpaces()) {
|
|
if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === ',') {
|
|
this._currentIndex++;
|
|
this._skipOptionalSpaces();
|
|
}
|
|
}
|
|
return this._currentIndex < this._endIndex;
|
|
}
|
|
|
|
hasMoreData () {
|
|
return this._currentIndex < this._endIndex;
|
|
}
|
|
|
|
peekSegmentType () {
|
|
const lookahead = this._string[this._currentIndex];
|
|
return this._pathSegTypeFromChar(lookahead);
|
|
}
|
|
|
|
_pathSegTypeFromChar (lookahead) {
|
|
switch (lookahead) {
|
|
case 'Z':
|
|
case 'z':
|
|
return SVGPathSeg.PATHSEG_CLOSEPATH;
|
|
case 'M':
|
|
return SVGPathSeg.PATHSEG_MOVETO_ABS;
|
|
case 'm':
|
|
return SVGPathSeg.PATHSEG_MOVETO_REL;
|
|
case 'L':
|
|
return SVGPathSeg.PATHSEG_LINETO_ABS;
|
|
case 'l':
|
|
return SVGPathSeg.PATHSEG_LINETO_REL;
|
|
case 'C':
|
|
return SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS;
|
|
case 'c':
|
|
return SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL;
|
|
case 'Q':
|
|
return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS;
|
|
case 'q':
|
|
return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL;
|
|
case 'A':
|
|
return SVGPathSeg.PATHSEG_ARC_ABS;
|
|
case 'a':
|
|
return SVGPathSeg.PATHSEG_ARC_REL;
|
|
case 'H':
|
|
return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS;
|
|
case 'h':
|
|
return SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL;
|
|
case 'V':
|
|
return SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS;
|
|
case 'v':
|
|
return SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL;
|
|
case 'S':
|
|
return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS;
|
|
case 's':
|
|
return SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL;
|
|
case 'T':
|
|
return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS;
|
|
case 't':
|
|
return SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL;
|
|
default:
|
|
return SVGPathSeg.PATHSEG_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
_nextCommandHelper (lookahead, previousCommand) {
|
|
// Check for remaining coordinates in the current command.
|
|
if ((lookahead === '+' || lookahead === '-' || lookahead === '.' || (lookahead >= '0' && lookahead <= '9')) && previousCommand !== SVGPathSeg.PATHSEG_CLOSEPATH) {
|
|
if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_ABS) {
|
|
return SVGPathSeg.PATHSEG_LINETO_ABS;
|
|
}
|
|
if (previousCommand === SVGPathSeg.PATHSEG_MOVETO_REL) {
|
|
return SVGPathSeg.PATHSEG_LINETO_REL;
|
|
}
|
|
return previousCommand;
|
|
}
|
|
return SVGPathSeg.PATHSEG_UNKNOWN;
|
|
}
|
|
|
|
initialCommandIsMoveTo () {
|
|
// If the path is empty it is still valid, so return true.
|
|
if (!this.hasMoreData()) {
|
|
return true;
|
|
}
|
|
const command = this.peekSegmentType();
|
|
// Path must start with moveTo.
|
|
return command === SVGPathSeg.PATHSEG_MOVETO_ABS || command === SVGPathSeg.PATHSEG_MOVETO_REL;
|
|
}
|
|
|
|
// Parse a number from an SVG path. This very closely follows genericParseNumber(...) from Source/core/svg/SVGParserUtilities.cpp.
|
|
// Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-PathDataBNF
|
|
_parseNumber () {
|
|
let exponent = 0;
|
|
let integer = 0;
|
|
let frac = 1;
|
|
let decimal = 0;
|
|
let sign = 1;
|
|
let expsign = 1;
|
|
|
|
const startIndex = this._currentIndex;
|
|
|
|
this._skipOptionalSpaces();
|
|
|
|
// Read the sign.
|
|
if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '+') {
|
|
this._currentIndex++;
|
|
} else if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '-') {
|
|
this._currentIndex++;
|
|
sign = -1;
|
|
}
|
|
|
|
if (this._currentIndex === this._endIndex || ((this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') && this._string.charAt(this._currentIndex) !== '.')) {
|
|
// The first character of a number must be one of [0-9+-.].
|
|
return undefined;
|
|
}
|
|
|
|
// Read the integer part, build right-to-left.
|
|
const startIntPartIndex = this._currentIndex;
|
|
while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {
|
|
this._currentIndex++; // Advance to first non-digit.
|
|
}
|
|
|
|
if (this._currentIndex !== startIntPartIndex) {
|
|
let scanIntPartIndex = this._currentIndex - 1;
|
|
let multiplier = 1;
|
|
while (scanIntPartIndex >= startIntPartIndex) {
|
|
integer += multiplier * (this._string.charAt(scanIntPartIndex--) - '0');
|
|
multiplier *= 10;
|
|
}
|
|
}
|
|
|
|
// Read the decimals.
|
|
if (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) === '.') {
|
|
this._currentIndex++;
|
|
|
|
// There must be a least one digit following the .
|
|
if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {
|
|
return undefined;
|
|
}
|
|
while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {
|
|
frac *= 10;
|
|
decimal += (this._string.charAt(this._currentIndex) - '0') / frac;
|
|
this._currentIndex += 1;
|
|
}
|
|
}
|
|
|
|
// Read the exponent part.
|
|
if (this._currentIndex !== startIndex && this._currentIndex + 1 < this._endIndex && (this._string.charAt(this._currentIndex) === 'e' || this._string.charAt(this._currentIndex) === 'E') && (this._string.charAt(this._currentIndex + 1) !== 'x' && this._string.charAt(this._currentIndex + 1) !== 'm')) {
|
|
this._currentIndex++;
|
|
|
|
// Read the sign of the exponent.
|
|
if (this._string.charAt(this._currentIndex) === '+') {
|
|
this._currentIndex++;
|
|
} else if (this._string.charAt(this._currentIndex) === '-') {
|
|
this._currentIndex++;
|
|
expsign = -1;
|
|
}
|
|
|
|
// There must be an exponent.
|
|
if (this._currentIndex >= this._endIndex || this._string.charAt(this._currentIndex) < '0' || this._string.charAt(this._currentIndex) > '9') {
|
|
return undefined;
|
|
}
|
|
|
|
while (this._currentIndex < this._endIndex && this._string.charAt(this._currentIndex) >= '0' && this._string.charAt(this._currentIndex) <= '9') {
|
|
exponent *= 10;
|
|
exponent += (this._string.charAt(this._currentIndex) - '0');
|
|
this._currentIndex++;
|
|
}
|
|
}
|
|
|
|
let number = integer + decimal;
|
|
number *= sign;
|
|
|
|
if (exponent) {
|
|
number *= 10 ** (expsign * exponent);
|
|
}
|
|
|
|
if (startIndex === this._currentIndex) {
|
|
return undefined;
|
|
}
|
|
|
|
this._skipOptionalSpacesOrDelimiter();
|
|
|
|
return number;
|
|
}
|
|
|
|
_parseArcFlag () {
|
|
if (this._currentIndex >= this._endIndex) {
|
|
return undefined;
|
|
}
|
|
let flag = false;
|
|
const flagChar = this._string.charAt(this._currentIndex++);
|
|
if (flagChar === '0') {
|
|
flag = false;
|
|
} else if (flagChar === '1') {
|
|
flag = true;
|
|
} else {
|
|
return undefined;
|
|
}
|
|
|
|
this._skipOptionalSpacesOrDelimiter();
|
|
return flag;
|
|
}
|
|
|
|
parseSegment () {
|
|
const lookahead = this._string[this._currentIndex];
|
|
let command = this._pathSegTypeFromChar(lookahead);
|
|
if (command === SVGPathSeg.PATHSEG_UNKNOWN) {
|
|
// Possibly an implicit command. Not allowed if this is the first command.
|
|
if (this._previousCommand === SVGPathSeg.PATHSEG_UNKNOWN) {
|
|
return null;
|
|
}
|
|
command = this._nextCommandHelper(lookahead, this._previousCommand);
|
|
if (command === SVGPathSeg.PATHSEG_UNKNOWN) {
|
|
return null;
|
|
}
|
|
} else {
|
|
this._currentIndex++;
|
|
}
|
|
|
|
this._previousCommand = command;
|
|
|
|
switch (command) {
|
|
case SVGPathSeg.PATHSEG_MOVETO_REL:
|
|
return new SVGPathSegMovetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_MOVETO_ABS:
|
|
return new SVGPathSegMovetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_LINETO_REL:
|
|
return new SVGPathSegLinetoRel(owningPathSegList, this._parseNumber(), this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_LINETO_ABS:
|
|
return new SVGPathSegLinetoAbs(owningPathSegList, this._parseNumber(), this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_REL:
|
|
return new SVGPathSegLinetoHorizontalRel(owningPathSegList, this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_LINETO_HORIZONTAL_ABS:
|
|
return new SVGPathSegLinetoHorizontalAbs(owningPathSegList, this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_LINETO_VERTICAL_REL:
|
|
return new SVGPathSegLinetoVerticalRel(owningPathSegList, this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_LINETO_VERTICAL_ABS:
|
|
return new SVGPathSegLinetoVerticalAbs(owningPathSegList, this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_CLOSEPATH:
|
|
this._skipOptionalSpaces();
|
|
return new SVGPathSegClosePath(owningPathSegList);
|
|
case SVGPathSeg.PATHSEG_CURVETO_CUBIC_REL: {
|
|
const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};
|
|
return new SVGPathSegCurvetoCubicRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);
|
|
} case SVGPathSeg.PATHSEG_CURVETO_CUBIC_ABS: {
|
|
const points = {x1: this._parseNumber(), y1: this._parseNumber(), x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};
|
|
return new SVGPathSegCurvetoCubicAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.x2, points.y2);
|
|
} case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_REL: {
|
|
const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};
|
|
return new SVGPathSegCurvetoCubicSmoothRel(owningPathSegList, points.x, points.y, points.x2, points.y2);
|
|
} case SVGPathSeg.PATHSEG_CURVETO_CUBIC_SMOOTH_ABS: {
|
|
const points = {x2: this._parseNumber(), y2: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};
|
|
return new SVGPathSegCurvetoCubicSmoothAbs(owningPathSegList, points.x, points.y, points.x2, points.y2);
|
|
} case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_REL: {
|
|
const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};
|
|
return new SVGPathSegCurvetoQuadraticRel(owningPathSegList, points.x, points.y, points.x1, points.y1);
|
|
} case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_ABS: {
|
|
const points = {x1: this._parseNumber(), y1: this._parseNumber(), x: this._parseNumber(), y: this._parseNumber()};
|
|
return new SVGPathSegCurvetoQuadraticAbs(owningPathSegList, points.x, points.y, points.x1, points.y1);
|
|
} case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL:
|
|
return new SVGPathSegCurvetoQuadraticSmoothRel(owningPathSegList, this._parseNumber(), this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS:
|
|
return new SVGPathSegCurvetoQuadraticSmoothAbs(owningPathSegList, this._parseNumber(), this._parseNumber());
|
|
case SVGPathSeg.PATHSEG_ARC_REL: {
|
|
const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};
|
|
return new SVGPathSegArcRel(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);
|
|
} case SVGPathSeg.PATHSEG_ARC_ABS: {
|
|
const points = {x1: this._parseNumber(), y1: this._parseNumber(), arcAngle: this._parseNumber(), arcLarge: this._parseArcFlag(), arcSweep: this._parseArcFlag(), x: this._parseNumber(), y: this._parseNumber()};
|
|
return new SVGPathSegArcAbs(owningPathSegList, points.x, points.y, points.x1, points.y1, points.arcAngle, points.arcLarge, points.arcSweep);
|
|
} default:
|
|
throw new Error('Unknown path seg type.');
|
|
}
|
|
}
|
|
}
|
|
|
|
const builder = new Builder();
|
|
const source = new Source(string);
|
|
|
|
if (!source.initialCommandIsMoveTo()) {
|
|
return [];
|
|
}
|
|
while (source.hasMoreData()) {
|
|
const pathSeg = source.parseSegment();
|
|
if (!pathSeg) {
|
|
return [];
|
|
}
|
|
builder.appendSegment(pathSeg);
|
|
}
|
|
|
|
return builder.pathSegList;
|
|
}
|
|
}
|
|
|
|
SVGPathSegList.prototype.classname = 'SVGPathSegList';
|
|
|
|
Object.defineProperty(SVGPathSegList.prototype, 'numberOfItems', {
|
|
get () {
|
|
this._checkPathSynchronizedToList();
|
|
return this._list.length;
|
|
},
|
|
enumerable: true
|
|
});
|
|
|
|
SVGPathSegList._pathSegArrayAsString = function (pathSegArray) {
|
|
let string = '';
|
|
let first = true;
|
|
pathSegArray.forEach((pathSeg) => {
|
|
if (first) {
|
|
first = false;
|
|
string += pathSeg._asPathString();
|
|
} else {
|
|
string += ' ' + pathSeg._asPathString();
|
|
}
|
|
});
|
|
return string;
|
|
};
|
|
|
|
// Add the pathSegList accessors to SVGPathElement.
|
|
// Spec: https://www.w3.org/TR/SVG11/single-page.html#paths-InterfaceSVGAnimatedPathData
|
|
Object.defineProperties(SVGPathElement.prototype, {
|
|
pathSegList: {
|
|
get () {
|
|
if (!this._pathSegList) {
|
|
this._pathSegList = new SVGPathSegList(this);
|
|
}
|
|
return this._pathSegList;
|
|
},
|
|
enumerable: true
|
|
},
|
|
// FIXME: The following are not implemented and simply return SVGPathElement.pathSegList.
|
|
normalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true},
|
|
animatedPathSegList: {get () { return this.pathSegList; }, enumerable: true},
|
|
animatedNormalizedPathSegList: {get () { return this.pathSegList; }, enumerable: true}
|
|
});
|
|
window.SVGPathSegList = SVGPathSegList;
|
|
}
|
|
})();
|