314 lines
10 KiB
JavaScript
314 lines
10 KiB
JavaScript
/*!
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* DrawSVGPlugin 3.13.0
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* https://gsap.com
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*
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* @license Copyright 2008-2025, GreenSock. All rights reserved.
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* Subject to the terms at https://gsap.com/standard-license
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* @author: Jack Doyle, jack@greensock.com
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*/
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/* eslint-disable */
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var gsap,
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_toArray,
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_doc,
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_win,
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_isEdge,
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_coreInitted,
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_warned,
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_getStyleSaver,
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_reverting,
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_windowExists = function _windowExists() {
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return typeof window !== "undefined";
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},
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_getGSAP = function _getGSAP() {
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return gsap || _windowExists() && (gsap = window.gsap) && gsap.registerPlugin && gsap;
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},
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_numExp = /[-+=\.]*\d+[\.e\-\+]*\d*[e\-\+]*\d*/gi,
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//finds any numbers, including ones that start with += or -=, negative numbers, and ones in scientific notation like 1e-8.
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_types = {
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rect: ["width", "height"],
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circle: ["r", "r"],
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ellipse: ["rx", "ry"],
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line: ["x2", "y2"]
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},
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_round = function _round(value) {
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return Math.round(value * 10000) / 10000;
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},
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_parseNum = function _parseNum(value) {
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return parseFloat(value) || 0;
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},
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_parseSingleVal = function _parseSingleVal(value, length) {
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var num = _parseNum(value);
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return ~value.indexOf("%") ? num / 100 * length : num;
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},
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_getAttributeAsNumber = function _getAttributeAsNumber(target, attr) {
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return _parseNum(target.getAttribute(attr));
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},
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_sqrt = Math.sqrt,
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_getDistance = function _getDistance(x1, y1, x2, y2, scaleX, scaleY) {
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return _sqrt(Math.pow((_parseNum(x2) - _parseNum(x1)) * scaleX, 2) + Math.pow((_parseNum(y2) - _parseNum(y1)) * scaleY, 2));
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},
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_warn = function _warn(message) {
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return console.warn(message);
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},
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_hasNonScalingStroke = function _hasNonScalingStroke(target) {
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return target.getAttribute("vector-effect") === "non-scaling-stroke";
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},
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_bonusValidated = 1,
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//<name>DrawSVGPlugin</name>
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//accepts values like "100%" or "20% 80%" or "20 50" and parses it into an absolute start and end position on the line/stroke based on its length. Returns an an array with the start and end values, like [0, 243]
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_parse = function _parse(value, length, defaultStart) {
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var i = value.indexOf(" "),
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s,
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e;
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if (i < 0) {
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s = defaultStart !== undefined ? defaultStart + "" : value;
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e = value;
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} else {
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s = value.substr(0, i);
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e = value.substr(i + 1);
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}
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s = _parseSingleVal(s, length);
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e = _parseSingleVal(e, length);
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return s > e ? [e, s] : [s, e];
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},
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_getLength = function _getLength(target) {
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target = _toArray(target)[0];
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if (!target) {
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return 0;
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}
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var type = target.tagName.toLowerCase(),
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style = target.style,
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scaleX = 1,
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scaleY = 1,
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length,
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bbox,
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points,
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prevPoint,
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i,
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rx,
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ry;
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if (_hasNonScalingStroke(target)) {
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//non-scaling-stroke basically scales the shape and then strokes it at the screen-level (after transforms), thus we need to adjust the length accordingly.
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scaleY = target.getScreenCTM();
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scaleX = _sqrt(scaleY.a * scaleY.a + scaleY.b * scaleY.b);
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scaleY = _sqrt(scaleY.d * scaleY.d + scaleY.c * scaleY.c);
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}
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try {
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//IE bug: calling <path>.getTotalLength() locks the repaint area of the stroke to whatever its current dimensions are on that frame/tick. To work around that, we must call getBBox() to force IE to recalculate things.
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bbox = target.getBBox(); //solely for fixing bug in IE - we don't actually use the bbox.
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} catch (e) {
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//firefox has a bug that throws an error if the element isn't visible.
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_warn("Some browsers won't measure invisible elements (like display:none or masks inside defs).");
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}
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var _ref = bbox || {
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x: 0,
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y: 0,
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width: 0,
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height: 0
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},
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x = _ref.x,
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y = _ref.y,
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width = _ref.width,
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height = _ref.height;
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if ((!bbox || !width && !height) && _types[type]) {
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//if the element isn't visible, try to discern width/height using its attributes.
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width = _getAttributeAsNumber(target, _types[type][0]);
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height = _getAttributeAsNumber(target, _types[type][1]);
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if (type !== "rect" && type !== "line") {
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//double the radius for circles and ellipses
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width *= 2;
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height *= 2;
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}
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if (type === "line") {
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x = _getAttributeAsNumber(target, "x1");
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y = _getAttributeAsNumber(target, "y1");
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width = Math.abs(width - x);
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height = Math.abs(height - y);
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}
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}
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if (type === "path") {
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prevPoint = style.strokeDasharray;
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style.strokeDasharray = "none";
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length = target.getTotalLength() || 0;
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_round(scaleX) !== _round(scaleY) && !_warned && (_warned = 1) && _warn("Warning: <path> length cannot be measured when vector-effect is non-scaling-stroke and the element isn't proportionally scaled.");
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length *= (scaleX + scaleY) / 2;
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style.strokeDasharray = prevPoint;
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} else if (type === "rect") {
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length = width * 2 * scaleX + height * 2 * scaleY;
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} else if (type === "line") {
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length = _getDistance(x, y, x + width, y + height, scaleX, scaleY);
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} else if (type === "polyline" || type === "polygon") {
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points = target.getAttribute("points").match(_numExp) || [];
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type === "polygon" && points.push(points[0], points[1]);
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length = 0;
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for (i = 2; i < points.length; i += 2) {
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length += _getDistance(points[i - 2], points[i - 1], points[i], points[i + 1], scaleX, scaleY) || 0;
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}
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} else if (type === "circle" || type === "ellipse") {
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rx = width / 2 * scaleX;
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ry = height / 2 * scaleY;
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length = Math.PI * (3 * (rx + ry) - _sqrt((3 * rx + ry) * (rx + 3 * ry)));
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}
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return length || 0;
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},
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_getPosition = function _getPosition(target, length) {
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target = _toArray(target)[0];
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if (!target) {
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return [0, 0];
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}
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length || (length = _getLength(target) + 1);
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var cs = _win.getComputedStyle(target),
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dash = cs.strokeDasharray || "",
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offset = _parseNum(cs.strokeDashoffset),
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i = dash.indexOf(",");
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i < 0 && (i = dash.indexOf(" "));
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dash = i < 0 ? length : _parseNum(dash.substr(0, i));
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dash > length && (dash = length);
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return [-offset || 0, dash - offset || 0];
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},
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_initCore = function _initCore() {
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if (_windowExists()) {
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_doc = document;
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_win = window;
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_coreInitted = gsap = _getGSAP();
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_toArray = gsap.utils.toArray;
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_getStyleSaver = gsap.core.getStyleSaver;
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_reverting = gsap.core.reverting || function () {};
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_isEdge = ((_win.navigator || {}).userAgent || "").indexOf("Edge") !== -1; //Microsoft Edge has a bug that causes it not to redraw the path correctly if the stroke-linecap is anything other than "butt" (like "round") and it doesn't match the stroke-linejoin. A way to trigger it is to change the stroke-miterlimit, so we'll only do that if/when we have to (to maximize performance)
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}
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};
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export var DrawSVGPlugin = {
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version: "3.13.0",
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name: "drawSVG",
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register: function register(core) {
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gsap = core;
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_initCore();
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},
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init: function init(target, value, tween, index, targets) {
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if (!target.getBBox) {
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return false;
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}
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_coreInitted || _initCore();
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var length = _getLength(target),
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start,
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end,
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cs;
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this.styles = _getStyleSaver && _getStyleSaver(target, "strokeDashoffset,strokeDasharray,strokeMiterlimit");
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this.tween = tween;
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this._style = target.style;
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this._target = target;
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if (value + "" === "true") {
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value = "0 100%";
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} else if (!value) {
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value = "0 0";
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} else if ((value + "").indexOf(" ") === -1) {
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value = "0 " + value;
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}
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start = _getPosition(target, length);
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end = _parse(value, length, start[0]);
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this._length = _round(length);
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this._dash = _round(start[1] - start[0]); //some browsers render artifacts if dash is 0, so we use a very small number in that case.
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this._offset = _round(-start[0]);
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this._dashPT = this.add(this, "_dash", this._dash, _round(end[1] - end[0]), 0, 0, 0, 0, 0, 1);
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this._offsetPT = this.add(this, "_offset", this._offset, _round(-end[0]), 0, 0, 0, 0, 0, 1);
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if (_isEdge) {
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//to work around a bug in Microsoft Edge, animate the stroke-miterlimit by 0.0001 just to trigger the repaint (unnecessary if it's "round" and stroke-linejoin is also "round"). Imperceptible, relatively high-performance, and effective. Another option was to set the "d" <path> attribute to its current value on every tick, but that seems like it'd be much less performant.
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cs = _win.getComputedStyle(target);
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if (cs.strokeLinecap !== cs.strokeLinejoin) {
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end = _parseNum(cs.strokeMiterlimit);
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this.add(target.style, "strokeMiterlimit", end, end + 0.01);
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}
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}
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this._live = _hasNonScalingStroke(target) || ~(value + "").indexOf("live");
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this._nowrap = ~(value + "").indexOf("nowrap");
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this._props.push("drawSVG");
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return _bonusValidated;
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},
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render: function render(ratio, data) {
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if (data.tween._time || !_reverting()) {
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var pt = data._pt,
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style = data._style,
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length,
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lengthRatio,
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dash,
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offset;
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if (pt) {
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//when the element has vector-effect="non-scaling-stroke" and the SVG is resized (like on a window resize), it actually changes the length of the stroke! So we must sense that and make the proper adjustments.
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if (data._live) {
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length = _getLength(data._target);
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if (length !== data._length) {
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lengthRatio = length / data._length;
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data._length = length;
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if (data._offsetPT) {
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data._offsetPT.s *= lengthRatio;
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data._offsetPT.c *= lengthRatio;
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}
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if (data._dashPT) {
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data._dashPT.s *= lengthRatio;
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data._dashPT.c *= lengthRatio;
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} else {
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data._dash *= lengthRatio;
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}
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}
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}
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while (pt) {
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pt.r(ratio, pt.d);
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pt = pt._next;
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}
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dash = data._dash || ratio && ratio !== 1 && 0.0001 || 0; // only let it be zero if it's at the start or end of the tween.
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length = data._length - dash + 0.1;
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offset = data._offset;
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dash && offset && dash + Math.abs(offset % data._length) > data._length - 0.05 && (offset += offset < 0 ? 0.005 : -0.005) && (length += 0.005);
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style.strokeDashoffset = dash ? offset : offset + 0.001;
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style.strokeDasharray = length < 0.1 ? "none" : dash ? dash + "px," + (data._nowrap ? 999999 : length) + "px" : "0px, 999999px";
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}
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} else {
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data.styles.revert();
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}
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},
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getLength: _getLength,
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getPosition: _getPosition
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};
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_getGSAP() && gsap.registerPlugin(DrawSVGPlugin);
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export { DrawSVGPlugin as default }; |