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// https://d3js.org/d3-zoom/ Version 1.7.1. Copyright 2017 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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(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 = function(x) {
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return function() {
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return x;
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};
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};
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function ZoomEvent(target, type, transform) {
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this.target = target;
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this.type = type;
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this.transform = transform;
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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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return node.__zoom || identity;
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}
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function nopropagation() {
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d3Selection.event.stopImmediatePropagation();
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}
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var noevent = function() {
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d3Selection.event.preventDefault();
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d3Selection.event.stopImmediatePropagation();
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};
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// Ignore right-click, since that should open the context menu.
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function defaultFilter() {
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return !d3Selection.event.button;
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}
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function defaultExtent() {
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var e = this, w, h;
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if (e instanceof SVGElement) {
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e = e.ownerSVGElement || e;
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w = e.width.baseVal.value;
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h = e.height.baseVal.value;
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} else {
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w = e.clientWidth;
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h = e.clientHeight;
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}
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return [[0, 0], [w, h]];
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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() {
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return -d3Selection.event.deltaY * (d3Selection.event.deltaMode ? 120 : 1) / 500;
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}
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function defaultTouchable() {
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return "ontouchstart" in this;
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}
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function defaultConstrain(transform$$1, extent, translateExtent) {
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var dx0 = transform$$1.invertX(extent[0][0]) - translateExtent[0][0],
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dx1 = transform$$1.invertX(extent[1][0]) - translateExtent[1][0],
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dy0 = transform$$1.invertY(extent[0][1]) - translateExtent[0][1],
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dy1 = transform$$1.invertY(extent[1][1]) - translateExtent[1][1];
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return transform$$1.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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var zoom = function() {
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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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gestures = [],
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listeners = d3Dispatch.dispatch("start", "zoom", "end"),
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touchstarting,
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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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function zoom(selection) {
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selection
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.property("__zoom", defaultTransform)
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.on("wheel.zoom", wheeled)
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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("touch-action", "none")
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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$$1) {
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var selection = collection.selection ? collection.selection() : collection;
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selection.property("__zoom", defaultTransform);
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if (collection !== selection) {
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schedule(collection, transform$$1);
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} else {
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selection.interrupt().each(function() {
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gesture(this, arguments)
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.start()
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.zoom(null, typeof transform$$1 === "function" ? transform$$1.apply(this, arguments) : transform$$1)
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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) {
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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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});
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};
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zoom.scaleTo = function(selection, k) {
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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 = centroid(e),
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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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});
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};
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zoom.translateBy = function(selection, x, y) {
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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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});
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};
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zoom.translateTo = function(selection, x, y) {
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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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p = centroid(e);
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return constrain(identity.translate(p[0], p[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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});
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};
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function scale(transform$$1, k) {
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k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], k));
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return k === transform$$1.k ? transform$$1 : new Transform(k, transform$$1.x, transform$$1.y);
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}
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function translate(transform$$1, p0, p1) {
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var x = p0[0] - p1[0] * transform$$1.k, y = p0[1] - p1[1] * transform$$1.k;
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return x === transform$$1.x && y === transform$$1.y ? transform$$1 : new Transform(transform$$1.k, x, y);
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}
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function centroid(extent) {
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return [(+extent[0][0] + +extent[1][0]) / 2, (+extent[0][1] + +extent[1][1]) / 2];
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}
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function schedule(transition, transform$$1, center) {
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transition
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.on("start.zoom", function() { gesture(this, arguments).start(); })
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.on("interrupt.zoom end.zoom", function() { gesture(this, arguments).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),
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e = extent.apply(that, args),
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p = center || centroid(e),
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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$$1 === "function" ? transform$$1.apply(that, args) : transform$$1,
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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) {
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for (var i = 0, n = gestures.length, g; i < n; ++i) {
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if ((g = gestures[i]).that === that) {
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return g;
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}
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}
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return 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.index = -1;
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this.active = 0;
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this.extent = extent.apply(that, args);
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}
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Gesture.prototype = {
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start: function() {
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if (++this.active === 1) {
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this.index = gestures.push(this) - 1;
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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$$1) {
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if (this.mouse && key !== "mouse") this.mouse[1] = transform$$1.invert(this.mouse[0]);
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if (this.touch0 && key !== "touch") this.touch0[1] = transform$$1.invert(this.touch0[0]);
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if (this.touch1 && key !== "touch") this.touch1[1] = transform$$1.invert(this.touch1[0]);
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this.that.__zoom = transform$$1;
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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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gestures.splice(this.index, 1);
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this.index = -1;
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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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d3Selection.customEvent(new ZoomEvent(zoom, type, this.that.__zoom), listeners.apply, listeners, [type, this.that, this.args]);
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}
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};
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function wheeled() {
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if (!filter.apply(this, arguments)) return;
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var g = gesture(this, arguments),
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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.mouse(this);
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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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}
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noevent();
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g.wheel = setTimeout(wheelidled, wheelDelay);
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g.zoom("mouse", constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent));
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function wheelidled() {
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g.wheel = null;
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g.end();
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}
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}
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function mousedowned() {
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if (touchending || !filter.apply(this, arguments)) return;
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var g = gesture(this, arguments),
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v = d3Selection.select(d3Selection.event.view).on("mousemove.zoom", mousemoved, true).on("mouseup.zoom", mouseupped, true),
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p = d3Selection.mouse(this),
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x0 = d3Selection.event.clientX,
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y0 = d3Selection.event.clientY;
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d3Drag.dragDisable(d3Selection.event.view);
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nopropagation();
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g.mouse = [p, this.__zoom.invert(p)];
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d3Transition.interrupt(this);
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g.start();
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function mousemoved() {
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noevent();
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if (!g.moved) {
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var dx = d3Selection.event.clientX - x0, dy = d3Selection.event.clientY - y0;
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g.moved = dx * dx + dy * dy > clickDistance2;
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}
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g.zoom("mouse", constrain(translate(g.that.__zoom, g.mouse[0] = d3Selection.mouse(g.that), g.mouse[1]), g.extent, translateExtent));
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}
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function mouseupped() {
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v.on("mousemove.zoom mouseup.zoom", null);
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d3Drag.dragEnable(d3Selection.event.view, g.moved);
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noevent();
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g.end();
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}
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}
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function dblclicked() {
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if (!filter.apply(this, arguments)) return;
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var t0 = this.__zoom,
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p0 = d3Selection.mouse(this),
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p1 = t0.invert(p0),
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k1 = t0.k * (d3Selection.event.shiftKey ? 0.5 : 2),
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t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, arguments), translateExtent);
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noevent();
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if (duration > 0) d3Selection.select(this).transition().duration(duration).call(schedule, t1, p0);
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else d3Selection.select(this).call(zoom.transform, t1);
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}
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function touchstarted() {
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if (!filter.apply(this, arguments)) return;
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var g = gesture(this, arguments),
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touches = d3Selection.event.changedTouches,
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started,
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n = touches.length, i, t, p;
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nopropagation();
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for (i = 0; i < n; ++i) {
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t = touches[i], p = d3Selection.touch(this, touches, t.identifier);
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p = [p, this.__zoom.invert(p), t.identifier];
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if (!g.touch0) g.touch0 = p, started = true;
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else if (!g.touch1) g.touch1 = p;
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}
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// If this is a dbltap, reroute to the (optional) dblclick.zoom handler.
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if (touchstarting) {
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touchstarting = clearTimeout(touchstarting);
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if (!g.touch1) {
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g.end();
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p = d3Selection.select(this).on("dblclick.zoom");
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if (p) p.apply(this, arguments);
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return;
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}
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}
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if (started) {
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touchstarting = setTimeout(function() { touchstarting = null; }, touchDelay);
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d3Transition.interrupt(this);
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g.start();
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}
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}
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function touchmoved() {
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var g = gesture(this, arguments),
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touches = d3Selection.event.changedTouches,
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n = touches.length, i, t, p, l;
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|
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noevent();
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if (touchstarting) touchstarting = clearTimeout(touchstarting);
|
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for (i = 0; i < n; ++i) {
|
|
|
t = touches[i], p = d3Selection.touch(this, touches, t.identifier);
|
|
|
if (g.touch0 && g.touch0[2] === t.identifier) g.touch0[0] = p;
|
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|
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],
|
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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() {
|
|
|
var g = gesture(this, arguments),
|
|
|
touches = d3Selection.event.changedTouches,
|
|
|
n = touches.length, i, t;
|
|
|
|
|
|
nopropagation();
|
|
|
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();
|
|
|
}
|
|
|
|
|
|
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);
|
|
|
};
|
|
|
|
|
|
return zoom;
|
|
|
};
|
|
|
|
|
|
exports.zoom = zoom;
|
|
|
exports.zoomTransform = transform;
|
|
|
exports.zoomIdentity = identity;
|
|
|
|
|
|
Object.defineProperty(exports, '__esModule', { value: true });
|
|
|
|
|
|
})));
|
