532 lines
18 KiB
JavaScript
532 lines
18 KiB
JavaScript
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// https://d3js.org/d3-zoom/ v3.0.0 Copyright 2010-2021 Mike Bostock
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-dispatch'), require('d3-drag'), require('d3-interpolate'), require('d3-selection'), require('d3-transition')) :
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typeof define === 'function' && define.amd ? define(['exports', 'd3-dispatch', 'd3-drag', 'd3-interpolate', 'd3-selection', 'd3-transition'], factory) :
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(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3, global.d3, global.d3, global.d3, global.d3));
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}(this, (function (exports, d3Dispatch, d3Drag, d3Interpolate, d3Selection, d3Transition) { 'use strict';
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var constant = x => () => x;
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function ZoomEvent(type, {
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sourceEvent,
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target,
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transform,
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dispatch
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}) {
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Object.defineProperties(this, {
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type: {value: type, enumerable: true, configurable: true},
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sourceEvent: {value: sourceEvent, enumerable: true, configurable: true},
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target: {value: target, enumerable: true, configurable: true},
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transform: {value: transform, enumerable: true, configurable: true},
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_: {value: dispatch}
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});
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}
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function Transform(k, x, y) {
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this.k = k;
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this.x = x;
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this.y = y;
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}
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Transform.prototype = {
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constructor: Transform,
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scale: function(k) {
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return k === 1 ? this : new Transform(this.k * k, this.x, this.y);
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},
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translate: function(x, y) {
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return x === 0 & y === 0 ? this : new Transform(this.k, this.x + this.k * x, this.y + this.k * y);
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},
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apply: function(point) {
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return [point[0] * this.k + this.x, point[1] * this.k + this.y];
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},
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applyX: function(x) {
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return x * this.k + this.x;
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},
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applyY: function(y) {
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return y * this.k + this.y;
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},
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invert: function(location) {
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return [(location[0] - this.x) / this.k, (location[1] - this.y) / this.k];
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},
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invertX: function(x) {
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return (x - this.x) / this.k;
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},
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invertY: function(y) {
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return (y - this.y) / this.k;
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},
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rescaleX: function(x) {
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return x.copy().domain(x.range().map(this.invertX, this).map(x.invert, x));
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},
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rescaleY: function(y) {
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return y.copy().domain(y.range().map(this.invertY, this).map(y.invert, y));
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},
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toString: function() {
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return "translate(" + this.x + "," + this.y + ") scale(" + this.k + ")";
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}
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};
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var identity = new Transform(1, 0, 0);
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transform.prototype = Transform.prototype;
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function transform(node) {
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while (!node.__zoom) if (!(node = node.parentNode)) return identity;
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return node.__zoom;
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}
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function nopropagation(event) {
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event.stopImmediatePropagation();
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}
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function noevent(event) {
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event.preventDefault();
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event.stopImmediatePropagation();
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}
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// Ignore right-click, since that should open the context menu.
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// except for pinch-to-zoom, which is sent as a wheel+ctrlKey event
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function defaultFilter(event) {
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return (!event.ctrlKey || event.type === 'wheel') && !event.button;
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}
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function defaultExtent() {
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var e = this;
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if (e instanceof SVGElement) {
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e = e.ownerSVGElement || e;
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if (e.hasAttribute("viewBox")) {
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e = e.viewBox.baseVal;
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return [[e.x, e.y], [e.x + e.width, e.y + e.height]];
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}
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return [[0, 0], [e.width.baseVal.value, e.height.baseVal.value]];
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}
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return [[0, 0], [e.clientWidth, e.clientHeight]];
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}
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function defaultTransform() {
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return this.__zoom || identity;
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}
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function defaultWheelDelta(event) {
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return -event.deltaY * (event.deltaMode === 1 ? 0.05 : event.deltaMode ? 1 : 0.002) * (event.ctrlKey ? 10 : 1);
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}
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function defaultTouchable() {
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return navigator.maxTouchPoints || ("ontouchstart" in this);
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}
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function defaultConstrain(transform, extent, translateExtent) {
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var dx0 = transform.invertX(extent[0][0]) - translateExtent[0][0],
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dx1 = transform.invertX(extent[1][0]) - translateExtent[1][0],
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dy0 = transform.invertY(extent[0][1]) - translateExtent[0][1],
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dy1 = transform.invertY(extent[1][1]) - translateExtent[1][1];
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return transform.translate(
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dx1 > dx0 ? (dx0 + dx1) / 2 : Math.min(0, dx0) || Math.max(0, dx1),
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dy1 > dy0 ? (dy0 + dy1) / 2 : Math.min(0, dy0) || Math.max(0, dy1)
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);
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}
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function zoom() {
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var filter = defaultFilter,
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extent = defaultExtent,
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constrain = defaultConstrain,
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wheelDelta = defaultWheelDelta,
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touchable = defaultTouchable,
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scaleExtent = [0, Infinity],
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translateExtent = [[-Infinity, -Infinity], [Infinity, Infinity]],
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duration = 250,
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interpolate = d3Interpolate.interpolateZoom,
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listeners = d3Dispatch.dispatch("start", "zoom", "end"),
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touchstarting,
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touchfirst,
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touchending,
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touchDelay = 500,
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wheelDelay = 150,
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clickDistance2 = 0,
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tapDistance = 10;
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function zoom(selection) {
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selection
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.property("__zoom", defaultTransform)
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.on("wheel.zoom", wheeled, {passive: false})
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.on("mousedown.zoom", mousedowned)
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.on("dblclick.zoom", dblclicked)
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.filter(touchable)
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.on("touchstart.zoom", touchstarted)
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.on("touchmove.zoom", touchmoved)
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.on("touchend.zoom touchcancel.zoom", touchended)
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.style("-webkit-tap-highlight-color", "rgba(0,0,0,0)");
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}
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zoom.transform = function(collection, transform, point, event) {
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var selection = collection.selection ? collection.selection() : collection;
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selection.property("__zoom", defaultTransform);
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if (collection !== selection) {
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schedule(collection, transform, point, event);
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} else {
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selection.interrupt().each(function() {
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gesture(this, arguments)
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.event(event)
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.start()
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.zoom(null, typeof transform === "function" ? transform.apply(this, arguments) : transform)
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.end();
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});
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}
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};
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zoom.scaleBy = function(selection, k, p, event) {
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zoom.scaleTo(selection, function() {
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var k0 = this.__zoom.k,
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k1 = typeof k === "function" ? k.apply(this, arguments) : k;
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return k0 * k1;
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}, p, event);
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};
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zoom.scaleTo = function(selection, k, p, event) {
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zoom.transform(selection, function() {
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var e = extent.apply(this, arguments),
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t0 = this.__zoom,
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p0 = p == null ? centroid(e) : typeof p === "function" ? p.apply(this, arguments) : p,
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p1 = t0.invert(p0),
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k1 = typeof k === "function" ? k.apply(this, arguments) : k;
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return constrain(translate(scale(t0, k1), p0, p1), e, translateExtent);
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}, p, event);
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};
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zoom.translateBy = function(selection, x, y, event) {
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zoom.transform(selection, function() {
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return constrain(this.__zoom.translate(
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typeof x === "function" ? x.apply(this, arguments) : x,
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typeof y === "function" ? y.apply(this, arguments) : y
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), extent.apply(this, arguments), translateExtent);
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}, null, event);
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};
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zoom.translateTo = function(selection, x, y, p, event) {
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zoom.transform(selection, function() {
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var e = extent.apply(this, arguments),
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t = this.__zoom,
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p0 = p == null ? centroid(e) : typeof p === "function" ? p.apply(this, arguments) : p;
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return constrain(identity.translate(p0[0], p0[1]).scale(t.k).translate(
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typeof x === "function" ? -x.apply(this, arguments) : -x,
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typeof y === "function" ? -y.apply(this, arguments) : -y
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), e, translateExtent);
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}, p, event);
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};
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function scale(transform, k) {
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k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], k));
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return k === transform.k ? transform : new Transform(k, transform.x, transform.y);
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}
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function translate(transform, p0, p1) {
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var x = p0[0] - p1[0] * transform.k, y = p0[1] - p1[1] * transform.k;
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return x === transform.x && y === transform.y ? transform : new Transform(transform.k, x, y);
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}
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function centroid(extent) {
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return [(+extent[0][0] + +extent[1][0]) / 2, (+extent[0][1] + +extent[1][1]) / 2];
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}
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function schedule(transition, transform, point, event) {
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transition
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.on("start.zoom", function() { gesture(this, arguments).event(event).start(); })
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.on("interrupt.zoom end.zoom", function() { gesture(this, arguments).event(event).end(); })
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.tween("zoom", function() {
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var that = this,
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args = arguments,
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g = gesture(that, args).event(event),
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e = extent.apply(that, args),
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p = point == null ? centroid(e) : typeof point === "function" ? point.apply(that, args) : point,
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w = Math.max(e[1][0] - e[0][0], e[1][1] - e[0][1]),
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a = that.__zoom,
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b = typeof transform === "function" ? transform.apply(that, args) : transform,
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i = interpolate(a.invert(p).concat(w / a.k), b.invert(p).concat(w / b.k));
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return function(t) {
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if (t === 1) t = b; // Avoid rounding error on end.
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else { var l = i(t), k = w / l[2]; t = new Transform(k, p[0] - l[0] * k, p[1] - l[1] * k); }
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g.zoom(null, t);
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};
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});
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}
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function gesture(that, args, clean) {
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return (!clean && that.__zooming) || new Gesture(that, args);
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}
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function Gesture(that, args) {
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this.that = that;
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this.args = args;
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this.active = 0;
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this.sourceEvent = null;
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this.extent = extent.apply(that, args);
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this.taps = 0;
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}
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Gesture.prototype = {
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event: function(event) {
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if (event) this.sourceEvent = event;
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return this;
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},
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start: function() {
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if (++this.active === 1) {
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this.that.__zooming = this;
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this.emit("start");
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}
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return this;
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},
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zoom: function(key, transform) {
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if (this.mouse && key !== "mouse") this.mouse[1] = transform.invert(this.mouse[0]);
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if (this.touch0 && key !== "touch") this.touch0[1] = transform.invert(this.touch0[0]);
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if (this.touch1 && key !== "touch") this.touch1[1] = transform.invert(this.touch1[0]);
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this.that.__zoom = transform;
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this.emit("zoom");
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return this;
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},
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end: function() {
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if (--this.active === 0) {
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delete this.that.__zooming;
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this.emit("end");
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}
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return this;
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},
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emit: function(type) {
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var d = d3Selection.select(this.that).datum();
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listeners.call(
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type,
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this.that,
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new ZoomEvent(type, {
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sourceEvent: this.sourceEvent,
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target: zoom,
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type,
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transform: this.that.__zoom,
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dispatch: listeners
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}),
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d
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);
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}
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};
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function wheeled(event, ...args) {
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if (!filter.apply(this, arguments)) return;
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var g = gesture(this, args).event(event),
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t = this.__zoom,
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k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], t.k * Math.pow(2, wheelDelta.apply(this, arguments)))),
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p = d3Selection.pointer(event);
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// If the mouse is in the same location as before, reuse it.
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// If there were recent wheel events, reset the wheel idle timeout.
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if (g.wheel) {
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if (g.mouse[0][0] !== p[0] || g.mouse[0][1] !== p[1]) {
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g.mouse[1] = t.invert(g.mouse[0] = p);
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}
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clearTimeout(g.wheel);
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}
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// If this wheel event won’t trigger a transform change, ignore it.
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else if (t.k === k) return;
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// Otherwise, capture the mouse point and location at the start.
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else {
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g.mouse = [p, t.invert(p)];
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d3Transition.interrupt(this);
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g.start();
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}
|
|||
|
|
|
|||
|
|
noevent(event);
|
|||
|
|
g.wheel = setTimeout(wheelidled, wheelDelay);
|
|||
|
|
g.zoom("mouse", constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent));
|
|||
|
|
|
|||
|
|
function wheelidled() {
|
|||
|
|
g.wheel = null;
|
|||
|
|
g.end();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
function mousedowned(event, ...args) {
|
|||
|
|
if (touchending || !filter.apply(this, arguments)) return;
|
|||
|
|
var currentTarget = event.currentTarget,
|
|||
|
|
g = gesture(this, args, true).event(event),
|
|||
|
|
v = d3Selection.select(event.view).on("mousemove.zoom", mousemoved, true).on("mouseup.zoom", mouseupped, true),
|
|||
|
|
p = d3Selection.pointer(event, currentTarget),
|
|||
|
|
x0 = event.clientX,
|
|||
|
|
y0 = event.clientY;
|
|||
|
|
|
|||
|
|
d3Drag.dragDisable(event.view);
|
|||
|
|
nopropagation(event);
|
|||
|
|
g.mouse = [p, this.__zoom.invert(p)];
|
|||
|
|
d3Transition.interrupt(this);
|
|||
|
|
g.start();
|
|||
|
|
|
|||
|
|
function mousemoved(event) {
|
|||
|
|
noevent(event);
|
|||
|
|
if (!g.moved) {
|
|||
|
|
var dx = event.clientX - x0, dy = event.clientY - y0;
|
|||
|
|
g.moved = dx * dx + dy * dy > clickDistance2;
|
|||
|
|
}
|
|||
|
|
g.event(event)
|
|||
|
|
.zoom("mouse", constrain(translate(g.that.__zoom, g.mouse[0] = d3Selection.pointer(event, currentTarget), g.mouse[1]), g.extent, translateExtent));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
function mouseupped(event) {
|
|||
|
|
v.on("mousemove.zoom mouseup.zoom", null);
|
|||
|
|
d3Drag.dragEnable(event.view, g.moved);
|
|||
|
|
noevent(event);
|
|||
|
|
g.event(event).end();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
function dblclicked(event, ...args) {
|
|||
|
|
if (!filter.apply(this, arguments)) return;
|
|||
|
|
var t0 = this.__zoom,
|
|||
|
|
p0 = d3Selection.pointer(event.changedTouches ? event.changedTouches[0] : event, this),
|
|||
|
|
p1 = t0.invert(p0),
|
|||
|
|
k1 = t0.k * (event.shiftKey ? 0.5 : 2),
|
|||
|
|
t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, args), translateExtent);
|
|||
|
|
|
|||
|
|
noevent(event);
|
|||
|
|
if (duration > 0) d3Selection.select(this).transition().duration(duration).call(schedule, t1, p0, event);
|
|||
|
|
else d3Selection.select(this).call(zoom.transform, t1, p0, event);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
function touchstarted(event, ...args) {
|
|||
|
|
if (!filter.apply(this, arguments)) return;
|
|||
|
|
var touches = event.touches,
|
|||
|
|
n = touches.length,
|
|||
|
|
g = gesture(this, args, event.changedTouches.length === n).event(event),
|
|||
|
|
started, i, t, p;
|
|||
|
|
|
|||
|
|
nopropagation(event);
|
|||
|
|
for (i = 0; i < n; ++i) {
|
|||
|
|
t = touches[i], p = d3Selection.pointer(t, this);
|
|||
|
|
p = [p, this.__zoom.invert(p), t.identifier];
|
|||
|
|
if (!g.touch0) g.touch0 = p, started = true, g.taps = 1 + !!touchstarting;
|
|||
|
|
else if (!g.touch1 && g.touch0[2] !== p[2]) g.touch1 = p, g.taps = 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (touchstarting) touchstarting = clearTimeout(touchstarting);
|
|||
|
|
|
|||
|
|
if (started) {
|
|||
|
|
if (g.taps < 2) touchfirst = p[0], touchstarting = setTimeout(function() { touchstarting = null; }, touchDelay);
|
|||
|
|
d3Transition.interrupt(this);
|
|||
|
|
g.start();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
function touchmoved(event, ...args) {
|
|||
|
|
if (!this.__zooming) return;
|
|||
|
|
var g = gesture(this, args).event(event),
|
|||
|
|
touches = event.changedTouches,
|
|||
|
|
n = touches.length, i, t, p, l;
|
|||
|
|
|
|||
|
|
noevent(event);
|
|||
|
|
for (i = 0; i < n; ++i) {
|
|||
|
|
t = touches[i], p = d3Selection.pointer(t, this);
|
|||
|
|
if (g.touch0 && g.touch0[2] === t.identifier) g.touch0[0] = p;
|
|||
|
|
else if (g.touch1 && g.touch1[2] === t.identifier) g.touch1[0] = p;
|
|||
|
|
}
|
|||
|
|
t = g.that.__zoom;
|
|||
|
|
if (g.touch1) {
|
|||
|
|
var p0 = g.touch0[0], l0 = g.touch0[1],
|
|||
|
|
p1 = g.touch1[0], l1 = g.touch1[1],
|
|||
|
|
dp = (dp = p1[0] - p0[0]) * dp + (dp = p1[1] - p0[1]) * dp,
|
|||
|
|
dl = (dl = l1[0] - l0[0]) * dl + (dl = l1[1] - l0[1]) * dl;
|
|||
|
|
t = scale(t, Math.sqrt(dp / dl));
|
|||
|
|
p = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2];
|
|||
|
|
l = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2];
|
|||
|
|
}
|
|||
|
|
else if (g.touch0) p = g.touch0[0], l = g.touch0[1];
|
|||
|
|
else return;
|
|||
|
|
|
|||
|
|
g.zoom("touch", constrain(translate(t, p, l), g.extent, translateExtent));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
function touchended(event, ...args) {
|
|||
|
|
if (!this.__zooming) return;
|
|||
|
|
var g = gesture(this, args).event(event),
|
|||
|
|
touches = event.changedTouches,
|
|||
|
|
n = touches.length, i, t;
|
|||
|
|
|
|||
|
|
nopropagation(event);
|
|||
|
|
if (touchending) clearTimeout(touchending);
|
|||
|
|
touchending = setTimeout(function() { touchending = null; }, touchDelay);
|
|||
|
|
for (i = 0; i < n; ++i) {
|
|||
|
|
t = touches[i];
|
|||
|
|
if (g.touch0 && g.touch0[2] === t.identifier) delete g.touch0;
|
|||
|
|
else if (g.touch1 && g.touch1[2] === t.identifier) delete g.touch1;
|
|||
|
|
}
|
|||
|
|
if (g.touch1 && !g.touch0) g.touch0 = g.touch1, delete g.touch1;
|
|||
|
|
if (g.touch0) g.touch0[1] = this.__zoom.invert(g.touch0[0]);
|
|||
|
|
else {
|
|||
|
|
g.end();
|
|||
|
|
// If this was a dbltap, reroute to the (optional) dblclick.zoom handler.
|
|||
|
|
if (g.taps === 2) {
|
|||
|
|
t = d3Selection.pointer(t, this);
|
|||
|
|
if (Math.hypot(touchfirst[0] - t[0], touchfirst[1] - t[1]) < tapDistance) {
|
|||
|
|
var p = d3Selection.select(this).on("dblclick.zoom");
|
|||
|
|
if (p) p.apply(this, arguments);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
zoom.wheelDelta = function(_) {
|
|||
|
|
return arguments.length ? (wheelDelta = typeof _ === "function" ? _ : constant(+_), zoom) : wheelDelta;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.filter = function(_) {
|
|||
|
|
return arguments.length ? (filter = typeof _ === "function" ? _ : constant(!!_), zoom) : filter;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.touchable = function(_) {
|
|||
|
|
return arguments.length ? (touchable = typeof _ === "function" ? _ : constant(!!_), zoom) : touchable;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.extent = function(_) {
|
|||
|
|
return arguments.length ? (extent = typeof _ === "function" ? _ : constant([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.scaleExtent = function(_) {
|
|||
|
|
return arguments.length ? (scaleExtent[0] = +_[0], scaleExtent[1] = +_[1], zoom) : [scaleExtent[0], scaleExtent[1]];
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.translateExtent = function(_) {
|
|||
|
|
return arguments.length ? (translateExtent[0][0] = +_[0][0], translateExtent[1][0] = +_[1][0], translateExtent[0][1] = +_[0][1], translateExtent[1][1] = +_[1][1], zoom) : [[translateExtent[0][0], translateExtent[0][1]], [translateExtent[1][0], translateExtent[1][1]]];
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.constrain = function(_) {
|
|||
|
|
return arguments.length ? (constrain = _, zoom) : constrain;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.duration = function(_) {
|
|||
|
|
return arguments.length ? (duration = +_, zoom) : duration;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.interpolate = function(_) {
|
|||
|
|
return arguments.length ? (interpolate = _, zoom) : interpolate;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.on = function() {
|
|||
|
|
var value = listeners.on.apply(listeners, arguments);
|
|||
|
|
return value === listeners ? zoom : value;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.clickDistance = function(_) {
|
|||
|
|
return arguments.length ? (clickDistance2 = (_ = +_) * _, zoom) : Math.sqrt(clickDistance2);
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
zoom.tapDistance = function(_) {
|
|||
|
|
return arguments.length ? (tapDistance = +_, zoom) : tapDistance;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
return zoom;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
exports.ZoomTransform = Transform;
|
|||
|
|
exports.zoom = zoom;
|
|||
|
|
exports.zoomIdentity = identity;
|
|||
|
|
exports.zoomTransform = transform;
|
|||
|
|
|
|||
|
|
Object.defineProperty(exports, '__esModule', { value: true });
|
|||
|
|
|
|||
|
|
})));
|