592 lines
20 KiB
JavaScript
592 lines
20 KiB
JavaScript
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/******************************************************************************
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Copyright (c) Microsoft Corporation.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE.
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***************************************************************************** */
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function __spreadArray(to, from, pack) {
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if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
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if (ar || !(i in from)) {
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if (!ar) ar = Array.prototype.slice.call(from, 0, i);
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ar[i] = from[i];
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}
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}
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return to.concat(ar || Array.prototype.slice.call(from));
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}
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var ARG_LENGTH = {
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a: 7,
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c: 6,
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h: 1,
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l: 2,
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m: 2,
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q: 4,
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s: 4,
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t: 2,
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v: 1,
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z: 0
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};
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var SEGMENT_PATTERN = /([astvzqmhlc])([^astvzqmhlc]*)/gi;
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var NUMBER = /-?[0-9]*\.?[0-9]+(?:e[-+]?\d+)?/gi;
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function parseValues(args) {
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var numbers = args.match(NUMBER);
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return numbers ? numbers.map(Number) : [];
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}
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/**
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* parse an svg path data string. Generates an Array
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* of commands where each command is an Array of the
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* form `[command, arg1, arg2, ...]`
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*
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* https://www.w3.org/TR/SVG/paths.html#PathDataGeneralInformation
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* @ignore
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*
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* @param {string} path
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* @returns {array}
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*/
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function parsePath(path) {
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var data = [];
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var p = String(path).trim();
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// A path data segment (if there is one) must begin with a "moveto" command
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if (p[0] !== "M" && p[0] !== "m") {
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return data;
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}
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p.replace(SEGMENT_PATTERN, function (_, command, args) {
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var theArgs = parseValues(args);
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var type = command.toLowerCase();
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var theCommand = command;
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// overloaded moveTo
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if (type === "m" && theArgs.length > 2) {
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data.push(__spreadArray([theCommand], theArgs.splice(0, 2), true));
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type = "l";
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theCommand = theCommand === "m" ? "l" : "L";
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}
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// Ignore invalid commands
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if (theArgs.length < ARG_LENGTH[type]) {
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return "";
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}
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data.push(__spreadArray([theCommand], theArgs.splice(0, ARG_LENGTH[type]), true));
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// The command letter can be eliminated on subsequent commands if the
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// same command is used multiple times in a row (e.g., you can drop the
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// second "L" in "M 100 200 L 200 100 L -100 -200" and use
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// "M 100 200 L 200 100 -100 -200" instead).
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while (theArgs.length >= ARG_LENGTH[type] && theArgs.length && ARG_LENGTH[type]) {
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data.push(__spreadArray([theCommand], theArgs.splice(0, ARG_LENGTH[type]), true));
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}
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return "";
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});
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return data;
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}
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function rotatePoint(point, angle) {
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var nx = point.x * Math.cos(angle) - point.y * Math.sin(angle);
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var ny = point.y * Math.cos(angle) + point.x * Math.sin(angle);
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point.x = nx;
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point.y = ny;
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}
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function translatePoint(point, dx, dy) {
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point.x += dx;
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point.y += dy;
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}
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function scalePoint(point, s) {
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point.x *= s;
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point.y *= s;
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}
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/**
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* Implements a browser's Path2D api
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*/
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var Path2D = /** @class */ (function () {
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function Path2D(path) {
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var _a;
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this.commands = [];
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if (path && path instanceof Path2D) {
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(_a = this.commands).push.apply(_a, path.commands);
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}
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else if (path) {
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this.commands = parsePath(path);
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}
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}
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Path2D.prototype.addPath = function (path) {
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var _a;
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if (path && path instanceof Path2D) {
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(_a = this.commands).push.apply(_a, path.commands);
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}
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};
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Path2D.prototype.moveTo = function (x, y) {
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this.commands.push(["M", x, y]);
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};
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Path2D.prototype.lineTo = function (x, y) {
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this.commands.push(["L", x, y]);
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};
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Path2D.prototype.arc = function (x, y, r, start, end, ccw) {
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this.commands.push(["AC", x, y, r, start, end, !!ccw]);
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};
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Path2D.prototype.arcTo = function (x1, y1, x2, y2, r) {
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this.commands.push(["AT", x1, y1, x2, y2, r]);
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};
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Path2D.prototype.ellipse = function (x, y, rx, ry, angle, start, end, ccw) {
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this.commands.push(["E", x, y, rx, ry, angle, start, end, !!ccw]);
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};
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Path2D.prototype.closePath = function () {
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this.commands.push(["Z"]);
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};
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Path2D.prototype.bezierCurveTo = function (cp1x, cp1y, cp2x, cp2y, x, y) {
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this.commands.push(["C", cp1x, cp1y, cp2x, cp2y, x, y]);
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};
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Path2D.prototype.quadraticCurveTo = function (cpx, cpy, x, y) {
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this.commands.push(["Q", cpx, cpy, x, y]);
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};
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Path2D.prototype.rect = function (x, y, width, height) {
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this.commands.push(["R", x, y, width, height]);
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};
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Path2D.prototype.roundRect = function (x, y, width, height, radii) {
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if (typeof radii === "undefined") {
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this.commands.push(["RR", x, y, width, height, 0]);
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}
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else {
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this.commands.push(["RR", x, y, width, height, radii]);
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}
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};
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return Path2D;
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}());
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function buildPath(ctx, commands) {
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var x = 0;
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var y = 0;
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var endAngle;
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var startAngle;
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var largeArcFlag;
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var sweepFlag;
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var endPoint;
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var midPoint;
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var angle;
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var lambda;
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var t1;
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var t2;
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var x1;
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var y1;
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var r;
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var rx;
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var ry;
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var w;
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var h;
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var pathType;
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var centerPoint;
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var ccw;
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var radii;
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var cpx = null;
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var cpy = null;
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var qcpx = null;
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var qcpy = null;
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var startPoint = null;
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var currentPoint = null;
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ctx.beginPath();
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for (var i = 0; i < commands.length; ++i) {
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pathType = commands[i][0];
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// Reset control point if command is not cubic
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if (pathType !== "S" && pathType !== "s" && pathType !== "C" && pathType !== "c") {
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cpx = null;
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cpy = null;
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}
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if (pathType !== "T" && pathType !== "t" && pathType !== "Q" && pathType !== "q") {
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qcpx = null;
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qcpy = null;
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}
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var c = void 0;
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switch (pathType) {
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case "m":
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case "M":
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c = commands[i];
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if (pathType === "m") {
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x += c[1];
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y += c[2];
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}
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else {
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x = c[1];
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y = c[2];
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}
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if (pathType === "M" || !startPoint) {
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startPoint = { x: x, y: y };
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}
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ctx.moveTo(x, y);
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break;
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case "l":
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c = commands[i];
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x += c[1];
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y += c[2];
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ctx.lineTo(x, y);
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break;
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case "L":
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c = commands[i];
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x = c[1];
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y = c[2];
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ctx.lineTo(x, y);
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break;
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case "H":
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c = commands[i];
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x = c[1];
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ctx.lineTo(x, y);
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break;
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case "h":
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c = commands[i];
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x += c[1];
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ctx.lineTo(x, y);
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break;
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case "V":
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c = commands[i];
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y = c[1];
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ctx.lineTo(x, y);
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break;
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case "v":
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c = commands[i];
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y += c[1];
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ctx.lineTo(x, y);
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break;
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case "a":
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case "A":
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c = commands[i];
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if (currentPoint === null) {
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throw new Error("This should never happen");
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}
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if (pathType === "a") {
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x += c[6];
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y += c[7];
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}
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else {
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x = c[6];
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y = c[7];
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}
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rx = c[1]; // rx
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ry = c[2]; // ry
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angle = (c[3] * Math.PI) / 180;
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largeArcFlag = !!c[4];
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sweepFlag = !!c[5];
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endPoint = { x: x, y: y };
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// https://www.w3.org/TR/SVG/implnote.html#ArcImplementationNotes
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midPoint = {
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x: (currentPoint.x - endPoint.x) / 2,
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y: (currentPoint.y - endPoint.y) / 2
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};
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rotatePoint(midPoint, -angle);
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// radius correction
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lambda = (midPoint.x * midPoint.x) / (rx * rx) + (midPoint.y * midPoint.y) / (ry * ry);
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if (lambda > 1) {
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lambda = Math.sqrt(lambda);
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rx *= lambda;
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ry *= lambda;
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}
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centerPoint = {
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x: (rx * midPoint.y) / ry,
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y: -(ry * midPoint.x) / rx
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};
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t1 = rx * rx * ry * ry;
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t2 = rx * rx * midPoint.y * midPoint.y + ry * ry * midPoint.x * midPoint.x;
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if (sweepFlag !== largeArcFlag) {
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scalePoint(centerPoint, Math.sqrt((t1 - t2) / t2) || 0);
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}
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else {
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scalePoint(centerPoint, -Math.sqrt((t1 - t2) / t2) || 0);
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}
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startAngle = Math.atan2((midPoint.y - centerPoint.y) / ry, (midPoint.x - centerPoint.x) / rx);
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endAngle = Math.atan2(-(midPoint.y + centerPoint.y) / ry, -(midPoint.x + centerPoint.x) / rx);
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rotatePoint(centerPoint, angle);
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translatePoint(centerPoint, (endPoint.x + currentPoint.x) / 2, (endPoint.y + currentPoint.y) / 2);
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ctx.save();
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ctx.translate(centerPoint.x, centerPoint.y);
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ctx.rotate(angle);
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ctx.scale(rx, ry);
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ctx.arc(0, 0, 1, startAngle, endAngle, !sweepFlag);
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ctx.restore();
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break;
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case "C":
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c = commands[i];
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cpx = c[3]; // Last control point
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cpy = c[4];
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x = c[5];
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y = c[6];
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ctx.bezierCurveTo(c[1], c[2], cpx, cpy, x, y);
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break;
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case "c":
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c = commands[i];
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ctx.bezierCurveTo(c[1] + x, c[2] + y, c[3] + x, c[4] + y, c[5] + x, c[6] + y);
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cpx = c[3] + x; // Last control point
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cpy = c[4] + y;
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x += c[5];
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y += c[6];
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break;
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case "S":
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c = commands[i];
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if (cpx === null || cpy === null) {
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cpx = x;
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cpy = y;
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}
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ctx.bezierCurveTo(2 * x - cpx, 2 * y - cpy, c[1], c[2], c[3], c[4]);
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cpx = c[1]; // last control point
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cpy = c[2];
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x = c[3];
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y = c[4];
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break;
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case "s":
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c = commands[i];
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if (cpx === null || cpy === null) {
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cpx = x;
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cpy = y;
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}
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ctx.bezierCurveTo(2 * x - cpx, 2 * y - cpy, c[1] + x, c[2] + y, c[3] + x, c[4] + y);
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cpx = c[1] + x; // last control point
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cpy = c[2] + y;
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x += c[3];
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y += c[4];
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break;
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case "Q":
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c = commands[i];
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qcpx = c[1]; // last control point
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qcpy = c[2];
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x = c[3];
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y = c[4];
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ctx.quadraticCurveTo(qcpx, qcpy, x, y);
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break;
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case "q":
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c = commands[i];
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qcpx = c[1] + x; // last control point
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qcpy = c[2] + y;
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x += c[3];
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y += c[4];
|
||
|
|
ctx.quadraticCurveTo(qcpx, qcpy, x, y);
|
||
|
|
break;
|
||
|
|
case "T":
|
||
|
|
c = commands[i];
|
||
|
|
if (qcpx === null || qcpy === null) {
|
||
|
|
qcpx = x;
|
||
|
|
qcpy = y;
|
||
|
|
}
|
||
|
|
qcpx = 2 * x - qcpx; // last control point
|
||
|
|
qcpy = 2 * y - qcpy;
|
||
|
|
x = c[1];
|
||
|
|
y = c[2];
|
||
|
|
ctx.quadraticCurveTo(qcpx, qcpy, x, y);
|
||
|
|
break;
|
||
|
|
case "t":
|
||
|
|
c = commands[i];
|
||
|
|
if (qcpx === null || qcpy === null) {
|
||
|
|
qcpx = x;
|
||
|
|
qcpy = y;
|
||
|
|
}
|
||
|
|
qcpx = 2 * x - qcpx; // last control point
|
||
|
|
qcpy = 2 * y - qcpy;
|
||
|
|
x += c[1];
|
||
|
|
y += c[2];
|
||
|
|
ctx.quadraticCurveTo(qcpx, qcpy, x, y);
|
||
|
|
break;
|
||
|
|
case "z":
|
||
|
|
case "Z":
|
||
|
|
if (startPoint) {
|
||
|
|
x = startPoint.x;
|
||
|
|
y = startPoint.y;
|
||
|
|
}
|
||
|
|
startPoint = null;
|
||
|
|
ctx.closePath();
|
||
|
|
break;
|
||
|
|
case "AC": // arc
|
||
|
|
c = commands[i];
|
||
|
|
x = c[1];
|
||
|
|
y = c[2];
|
||
|
|
r = c[3];
|
||
|
|
startAngle = c[4];
|
||
|
|
endAngle = c[5];
|
||
|
|
ccw = c[6];
|
||
|
|
ctx.arc(x, y, r, startAngle, endAngle, ccw);
|
||
|
|
break;
|
||
|
|
case "AT": // arcTo
|
||
|
|
c = commands[i];
|
||
|
|
x1 = c[1];
|
||
|
|
y1 = c[2];
|
||
|
|
x = c[3];
|
||
|
|
y = c[4];
|
||
|
|
r = c[5];
|
||
|
|
ctx.arcTo(x1, y1, x, y, r);
|
||
|
|
break;
|
||
|
|
case "E": // ellipse
|
||
|
|
c = commands[i];
|
||
|
|
x = c[1];
|
||
|
|
y = c[2];
|
||
|
|
rx = c[3];
|
||
|
|
ry = c[4];
|
||
|
|
angle = c[5];
|
||
|
|
startAngle = c[6];
|
||
|
|
endAngle = c[7];
|
||
|
|
ccw = c[8];
|
||
|
|
ctx.save();
|
||
|
|
ctx.translate(x, y);
|
||
|
|
ctx.rotate(angle);
|
||
|
|
ctx.scale(rx, ry);
|
||
|
|
ctx.arc(0, 0, 1, startAngle, endAngle, ccw);
|
||
|
|
ctx.restore();
|
||
|
|
break;
|
||
|
|
case "R": // rect
|
||
|
|
c = commands[i];
|
||
|
|
x = c[1];
|
||
|
|
y = c[2];
|
||
|
|
w = c[3];
|
||
|
|
h = c[4];
|
||
|
|
startPoint = { x: x, y: y };
|
||
|
|
ctx.rect(x, y, w, h);
|
||
|
|
break;
|
||
|
|
case "RR": // roundedRect
|
||
|
|
c = commands[i];
|
||
|
|
x = c[1];
|
||
|
|
y = c[2];
|
||
|
|
w = c[3];
|
||
|
|
h = c[4];
|
||
|
|
radii = c[5];
|
||
|
|
startPoint = { x: x, y: y };
|
||
|
|
ctx.roundRect(x, y, w, h, radii);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (!currentPoint) {
|
||
|
|
currentPoint = { x: x, y: y };
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
currentPoint.x = x;
|
||
|
|
currentPoint.y = y;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Polyfills CanvasRenderingContext2D stroke, fill and isPointInPath so that they support Path2D objects.
|
||
|
|
* @param {WindowLike} window - window like object containing a CanvasRenderingContext2D constructor
|
||
|
|
*/
|
||
|
|
function polyfillPath2D(window) {
|
||
|
|
if (!window || !window.CanvasRenderingContext2D || window.Path2D)
|
||
|
|
return;
|
||
|
|
var CanvasRenderingContext2D = window.CanvasRenderingContext2D;
|
||
|
|
/* eslint-disable @typescript-eslint/unbound-method */
|
||
|
|
// setting unbound functions here. Make sure this is set in function call later
|
||
|
|
var cFill = CanvasRenderingContext2D.prototype.fill;
|
||
|
|
var cStroke = CanvasRenderingContext2D.prototype.stroke;
|
||
|
|
var cIsPointInPath = CanvasRenderingContext2D.prototype.isPointInPath;
|
||
|
|
/* eslint-enable @typescript-eslint/unbound-method */
|
||
|
|
CanvasRenderingContext2D.prototype.fill = function fill() {
|
||
|
|
var args = [];
|
||
|
|
for (var _i = 0; _i < arguments.length; _i++) {
|
||
|
|
args[_i] = arguments[_i];
|
||
|
|
}
|
||
|
|
if (args[0] instanceof Path2D) {
|
||
|
|
var path = args[0];
|
||
|
|
var fillRule = args[1] || "nonzero";
|
||
|
|
buildPath(this, path.commands);
|
||
|
|
cFill.apply(this, [fillRule]);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
var fillRule = args[0] || "nonzero";
|
||
|
|
return cFill.apply(this, [fillRule]);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
CanvasRenderingContext2D.prototype.stroke = function stroke(path) {
|
||
|
|
if (path) {
|
||
|
|
buildPath(this, path.commands);
|
||
|
|
}
|
||
|
|
cStroke.apply(this);
|
||
|
|
};
|
||
|
|
CanvasRenderingContext2D.prototype.isPointInPath = function isPointInPath() {
|
||
|
|
var args = [];
|
||
|
|
for (var _i = 0; _i < arguments.length; _i++) {
|
||
|
|
args[_i] = arguments[_i];
|
||
|
|
}
|
||
|
|
if (args[0] instanceof Path2D) {
|
||
|
|
// first argument is a Path2D object
|
||
|
|
var path = args[0];
|
||
|
|
var x = args[1];
|
||
|
|
var y = args[2];
|
||
|
|
var fillRule = args[3] || "nonzero";
|
||
|
|
buildPath(this, path.commands);
|
||
|
|
return cIsPointInPath.apply(this, [x, y, fillRule]);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return cIsPointInPath.apply(this, args);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
window.Path2D = Path2D;
|
||
|
|
}
|
||
|
|
|
||
|
|
function roundRect(x, y, width, height, radii) {
|
||
|
|
var _this = this;
|
||
|
|
if (radii === void 0) { radii = 0; }
|
||
|
|
if (typeof radii === "number") {
|
||
|
|
// eslint-disable-next-line no-param-reassign
|
||
|
|
radii = [radii];
|
||
|
|
}
|
||
|
|
// check for range error
|
||
|
|
if (Array.isArray(radii)) {
|
||
|
|
if (radii.length === 0 || radii.length > 4) {
|
||
|
|
throw new RangeError("Failed to execute 'roundRect' on '".concat(this.constructor.name, "': ").concat(radii.length, " radii provided. Between one and four radii are necessary."));
|
||
|
|
}
|
||
|
|
radii.forEach(function (v) {
|
||
|
|
if (v < 0) {
|
||
|
|
throw new RangeError("Failed to execute 'roundRect' on '".concat(_this.constructor.name, "': Radius value ").concat(v, " is negative."));
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (radii.length === 1 && radii[0] === 0) {
|
||
|
|
return this.rect(x, y, width, height);
|
||
|
|
}
|
||
|
|
// set the corners
|
||
|
|
// tl = top left radius
|
||
|
|
// tr = top right radius
|
||
|
|
// br = bottom right radius
|
||
|
|
// bl = bottom left radius
|
||
|
|
var minRadius = Math.min(width, height) / 2;
|
||
|
|
var tr, br, bl;
|
||
|
|
var tl = (tr = br = bl = Math.min(minRadius, radii[0]));
|
||
|
|
if (radii.length === 2) {
|
||
|
|
tr = bl = Math.min(minRadius, radii[1]);
|
||
|
|
}
|
||
|
|
if (radii.length === 3) {
|
||
|
|
tr = bl = Math.min(minRadius, radii[1]);
|
||
|
|
br = Math.min(minRadius, radii[2]);
|
||
|
|
}
|
||
|
|
if (radii.length === 4) {
|
||
|
|
tr = Math.min(minRadius, radii[1]);
|
||
|
|
br = Math.min(minRadius, radii[2]);
|
||
|
|
bl = Math.min(minRadius, radii[3]);
|
||
|
|
}
|
||
|
|
// begin with closing current path
|
||
|
|
// this.closePath();
|
||
|
|
// let's draw the rounded rectangle
|
||
|
|
this.moveTo(x, y + height - bl);
|
||
|
|
this.arcTo(x, y, x + tl, y, tl);
|
||
|
|
this.arcTo(x + width, y, x + width, y + tr, tr);
|
||
|
|
this.arcTo(x + width, y + height, x + width - br, y + height, br);
|
||
|
|
this.arcTo(x, y + height, x, y + height - bl, bl);
|
||
|
|
// and move to rects control point for further path drawing
|
||
|
|
this.moveTo(x, y);
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Polyfills roundRect on CanvasRenderingContext2D and Path2D
|
||
|
|
* @param {WindowLike} window - window like object containing both CanvasRenderingContext2D and Path2D constructor
|
||
|
|
*/
|
||
|
|
function polyfillRoundRect(window) {
|
||
|
|
if (!window || !window.CanvasRenderingContext2D)
|
||
|
|
return;
|
||
|
|
var CanvasRenderingContext2D = window.CanvasRenderingContext2D, Path2D = window.Path2D;
|
||
|
|
// polyfill unsupported roundRect for e.g. firefox https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/roundRect#browser_compatibility
|
||
|
|
if (CanvasRenderingContext2D && !CanvasRenderingContext2D.prototype.roundRect) {
|
||
|
|
CanvasRenderingContext2D.prototype.roundRect = roundRect;
|
||
|
|
}
|
||
|
|
if (Path2D && !Path2D.prototype.roundRect) {
|
||
|
|
Path2D.prototype.roundRect = roundRect;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
export { Path2D, parsePath, polyfillPath2D, polyfillRoundRect };
|