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1902 lines
61 KiB
1902 lines
61 KiB
// svg-pan-zoom v3.5.1
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// https://github.com/ariutta/svg-pan-zoom
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(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
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var svgPanZoom = require('./svg-pan-zoom.js');
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// UMD module definition
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(function(window, document){
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// AMD
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if (typeof define === 'function' && define.amd) {
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define('svg-pan-zoom', function () {
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return svgPanZoom;
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});
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// CMD
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} else if (typeof module !== 'undefined' && module.exports) {
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module.exports = svgPanZoom;
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// Browser
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// Keep exporting globally as module.exports is available because of browserify
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window.svgPanZoom = svgPanZoom;
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}
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})(window, document)
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},{"./svg-pan-zoom.js":4}],2:[function(require,module,exports){
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var SvgUtils = require('./svg-utilities');
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module.exports = {
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enable: function(instance) {
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// Select (and create if necessary) defs
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var defs = instance.svg.querySelector('defs')
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if (!defs) {
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defs = document.createElementNS(SvgUtils.svgNS, 'defs')
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instance.svg.appendChild(defs)
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}
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// Check for style element, and create it if it doesn't exist
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var styleEl = defs.querySelector('style#svg-pan-zoom-controls-styles');
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if (!styleEl) {
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var style = document.createElementNS(SvgUtils.svgNS, 'style')
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style.setAttribute('id', 'svg-pan-zoom-controls-styles')
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style.setAttribute('type', 'text/css')
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style.textContent = '.svg-pan-zoom-control { cursor: pointer; fill: black; fill-opacity: 0.333; } .svg-pan-zoom-control:hover { fill-opacity: 0.8; } .svg-pan-zoom-control-background { fill: white; fill-opacity: 0.5; } .svg-pan-zoom-control-background { fill-opacity: 0.8; }'
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defs.appendChild(style)
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}
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// Zoom Group
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var zoomGroup = document.createElementNS(SvgUtils.svgNS, 'g');
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zoomGroup.setAttribute('id', 'svg-pan-zoom-controls');
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zoomGroup.setAttribute('transform', 'translate(' + ( instance.width - 70 ) + ' ' + ( instance.height - 76 ) + ') scale(0.75)');
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zoomGroup.setAttribute('class', 'svg-pan-zoom-control');
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// Control elements
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zoomGroup.appendChild(this._createZoomIn(instance))
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zoomGroup.appendChild(this._createZoomReset(instance))
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zoomGroup.appendChild(this._createZoomOut(instance))
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// Finally append created element
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instance.svg.appendChild(zoomGroup)
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// Cache control instance
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instance.controlIcons = zoomGroup
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}
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, _createZoomIn: function(instance) {
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var zoomIn = document.createElementNS(SvgUtils.svgNS, 'g');
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zoomIn.setAttribute('id', 'svg-pan-zoom-zoom-in');
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zoomIn.setAttribute('transform', 'translate(30.5 5) scale(0.015)');
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zoomIn.setAttribute('class', 'svg-pan-zoom-control');
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zoomIn.addEventListener('click', function() {instance.getPublicInstance().zoomIn()}, false)
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zoomIn.addEventListener('touchstart', function() {instance.getPublicInstance().zoomIn()}, false)
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var zoomInBackground = document.createElementNS(SvgUtils.svgNS, 'rect'); // TODO change these background space fillers to rounded rectangles so they look prettier
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zoomInBackground.setAttribute('x', '0');
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zoomInBackground.setAttribute('y', '0');
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zoomInBackground.setAttribute('width', '1500'); // larger than expected because the whole group is transformed to scale down
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zoomInBackground.setAttribute('height', '1400');
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zoomInBackground.setAttribute('class', 'svg-pan-zoom-control-background');
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zoomIn.appendChild(zoomInBackground);
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var zoomInShape = document.createElementNS(SvgUtils.svgNS, 'path');
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zoomInShape.setAttribute('d', 'M1280 576v128q0 26 -19 45t-45 19h-320v320q0 26 -19 45t-45 19h-128q-26 0 -45 -19t-19 -45v-320h-320q-26 0 -45 -19t-19 -45v-128q0 -26 19 -45t45 -19h320v-320q0 -26 19 -45t45 -19h128q26 0 45 19t19 45v320h320q26 0 45 19t19 45zM1536 1120v-960 q0 -119 -84.5 -203.5t-203.5 -84.5h-960q-119 0 -203.5 84.5t-84.5 203.5v960q0 119 84.5 203.5t203.5 84.5h960q119 0 203.5 -84.5t84.5 -203.5z');
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zoomInShape.setAttribute('class', 'svg-pan-zoom-control-element');
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zoomIn.appendChild(zoomInShape);
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return zoomIn
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}
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, _createZoomReset: function(instance){
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// reset
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var resetPanZoomControl = document.createElementNS(SvgUtils.svgNS, 'g');
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resetPanZoomControl.setAttribute('id', 'svg-pan-zoom-reset-pan-zoom');
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resetPanZoomControl.setAttribute('transform', 'translate(5 35) scale(0.4)');
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resetPanZoomControl.setAttribute('class', 'svg-pan-zoom-control');
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resetPanZoomControl.addEventListener('click', function() {instance.getPublicInstance().reset()}, false);
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resetPanZoomControl.addEventListener('touchstart', function() {instance.getPublicInstance().reset()}, false);
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var resetPanZoomControlBackground = document.createElementNS(SvgUtils.svgNS, 'rect'); // TODO change these background space fillers to rounded rectangles so they look prettier
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resetPanZoomControlBackground.setAttribute('x', '2');
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resetPanZoomControlBackground.setAttribute('y', '2');
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resetPanZoomControlBackground.setAttribute('width', '182'); // larger than expected because the whole group is transformed to scale down
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resetPanZoomControlBackground.setAttribute('height', '58');
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resetPanZoomControlBackground.setAttribute('class', 'svg-pan-zoom-control-background');
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resetPanZoomControl.appendChild(resetPanZoomControlBackground);
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var resetPanZoomControlShape1 = document.createElementNS(SvgUtils.svgNS, 'path');
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resetPanZoomControlShape1.setAttribute('d', 'M33.051,20.632c-0.742-0.406-1.854-0.609-3.338-0.609h-7.969v9.281h7.769c1.543,0,2.701-0.188,3.473-0.562c1.365-0.656,2.048-1.953,2.048-3.891C35.032,22.757,34.372,21.351,33.051,20.632z');
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resetPanZoomControlShape1.setAttribute('class', 'svg-pan-zoom-control-element');
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resetPanZoomControl.appendChild(resetPanZoomControlShape1);
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var resetPanZoomControlShape2 = document.createElementNS(SvgUtils.svgNS, 'path');
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resetPanZoomControlShape2.setAttribute('d', 'M170.231,0.5H15.847C7.102,0.5,0.5,5.708,0.5,11.84v38.861C0.5,56.833,7.102,61.5,15.847,61.5h154.384c8.745,0,15.269-4.667,15.269-10.798V11.84C185.5,5.708,178.976,0.5,170.231,0.5z M42.837,48.569h-7.969c-0.219-0.766-0.375-1.383-0.469-1.852c-0.188-0.969-0.289-1.961-0.305-2.977l-0.047-3.211c-0.03-2.203-0.41-3.672-1.142-4.406c-0.732-0.734-2.103-1.102-4.113-1.102h-7.05v13.547h-7.055V14.022h16.524c2.361,0.047,4.178,0.344,5.45,0.891c1.272,0.547,2.351,1.352,3.234,2.414c0.731,0.875,1.31,1.844,1.737,2.906s0.64,2.273,0.64,3.633c0,1.641-0.414,3.254-1.242,4.84s-2.195,2.707-4.102,3.363c1.594,0.641,2.723,1.551,3.387,2.73s0.996,2.98,0.996,5.402v2.32c0,1.578,0.063,2.648,0.19,3.211c0.19,0.891,0.635,1.547,1.333,1.969V48.569z M75.579,48.569h-26.18V14.022h25.336v6.117H56.454v7.336h16.781v6H56.454v8.883h19.125V48.569z M104.497,46.331c-2.44,2.086-5.887,3.129-10.34,3.129c-4.548,0-8.125-1.027-10.731-3.082s-3.909-4.879-3.909-8.473h6.891c0.224,1.578,0.662,2.758,1.316,3.539c1.196,1.422,3.246,2.133,6.15,2.133c1.739,0,3.151-0.188,4.236-0.562c2.058-0.719,3.087-2.055,3.087-4.008c0-1.141-0.504-2.023-1.512-2.648c-1.008-0.609-2.607-1.148-4.796-1.617l-3.74-0.82c-3.676-0.812-6.201-1.695-7.576-2.648c-2.328-1.594-3.492-4.086-3.492-7.477c0-3.094,1.139-5.664,3.417-7.711s5.623-3.07,10.036-3.07c3.685,0,6.829,0.965,9.431,2.895c2.602,1.93,3.966,4.73,4.093,8.402h-6.938c-0.128-2.078-1.057-3.555-2.787-4.43c-1.154-0.578-2.587-0.867-4.301-0.867c-1.907,0-3.428,0.375-4.565,1.125c-1.138,0.75-1.706,1.797-1.706,3.141c0,1.234,0.561,2.156,1.682,2.766c0.721,0.406,2.25,0.883,4.589,1.43l6.063,1.43c2.657,0.625,4.648,1.461,5.975,2.508c2.059,1.625,3.089,3.977,3.089,7.055C108.157,41.624,106.937,44.245,104.497,46.331z M139.61,48.569h-26.18V14.022h25.336v6.117h-18.281v7.336h16.781v6h-16.781v8.883h19.125V48.569z M170.337,20.14h-10.336v28.43h-7.266V20.14h-10.383v-6.117h27.984V20.14z');
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resetPanZoomControlShape2.setAttribute('class', 'svg-pan-zoom-control-element');
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resetPanZoomControl.appendChild(resetPanZoomControlShape2);
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return resetPanZoomControl
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}
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, _createZoomOut: function(instance){
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// zoom out
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var zoomOut = document.createElementNS(SvgUtils.svgNS, 'g');
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zoomOut.setAttribute('id', 'svg-pan-zoom-zoom-out');
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zoomOut.setAttribute('transform', 'translate(30.5 70) scale(0.015)');
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zoomOut.setAttribute('class', 'svg-pan-zoom-control');
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zoomOut.addEventListener('click', function() {instance.getPublicInstance().zoomOut()}, false);
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zoomOut.addEventListener('touchstart', function() {instance.getPublicInstance().zoomOut()}, false);
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var zoomOutBackground = document.createElementNS(SvgUtils.svgNS, 'rect'); // TODO change these background space fillers to rounded rectangles so they look prettier
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zoomOutBackground.setAttribute('x', '0');
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zoomOutBackground.setAttribute('y', '0');
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zoomOutBackground.setAttribute('width', '1500'); // larger than expected because the whole group is transformed to scale down
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zoomOutBackground.setAttribute('height', '1400');
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zoomOutBackground.setAttribute('class', 'svg-pan-zoom-control-background');
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zoomOut.appendChild(zoomOutBackground);
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var zoomOutShape = document.createElementNS(SvgUtils.svgNS, 'path');
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zoomOutShape.setAttribute('d', 'M1280 576v128q0 26 -19 45t-45 19h-896q-26 0 -45 -19t-19 -45v-128q0 -26 19 -45t45 -19h896q26 0 45 19t19 45zM1536 1120v-960q0 -119 -84.5 -203.5t-203.5 -84.5h-960q-119 0 -203.5 84.5t-84.5 203.5v960q0 119 84.5 203.5t203.5 84.5h960q119 0 203.5 -84.5 t84.5 -203.5z');
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zoomOutShape.setAttribute('class', 'svg-pan-zoom-control-element');
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zoomOut.appendChild(zoomOutShape);
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return zoomOut
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}
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, disable: function(instance) {
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if (instance.controlIcons) {
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instance.controlIcons.parentNode.removeChild(instance.controlIcons)
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instance.controlIcons = null
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}
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}
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}
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},{"./svg-utilities":5}],3:[function(require,module,exports){
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var SvgUtils = require('./svg-utilities')
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, Utils = require('./utilities')
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;
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var ShadowViewport = function(viewport, options){
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this.init(viewport, options)
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}
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/**
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* Initialization
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*
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* @param {SVGElement} viewport
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* @param {Object} options
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*/
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ShadowViewport.prototype.init = function(viewport, options) {
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// DOM Elements
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this.viewport = viewport
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this.options = options
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// State cache
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this.originalState = {zoom: 1, x: 0, y: 0}
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this.activeState = {zoom: 1, x: 0, y: 0}
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this.updateCTMCached = Utils.proxy(this.updateCTM, this)
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// Create a custom requestAnimationFrame taking in account refreshRate
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this.requestAnimationFrame = Utils.createRequestAnimationFrame(this.options.refreshRate)
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// ViewBox
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this.viewBox = {x: 0, y: 0, width: 0, height: 0}
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this.cacheViewBox()
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// Process CTM
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var newCTM = this.processCTM()
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// Update viewport CTM and cache zoom and pan
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this.setCTM(newCTM)
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// Update CTM in this frame
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this.updateCTM()
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}
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/**
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* Cache initial viewBox value
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* If no viewBox is defined, then use viewport size/position instead for viewBox values
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*/
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ShadowViewport.prototype.cacheViewBox = function() {
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var svgViewBox = this.options.svg.getAttribute('viewBox')
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if (svgViewBox) {
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var viewBoxValues = svgViewBox.split(/[\s\,]/).filter(function(v){return v}).map(parseFloat)
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// Cache viewbox x and y offset
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this.viewBox.x = viewBoxValues[0]
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this.viewBox.y = viewBoxValues[1]
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this.viewBox.width = viewBoxValues[2]
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this.viewBox.height = viewBoxValues[3]
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var zoom = Math.min(this.options.width / this.viewBox.width, this.options.height / this.viewBox.height)
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// Update active state
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this.activeState.zoom = zoom
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this.activeState.x = (this.options.width - this.viewBox.width * zoom) / 2
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this.activeState.y = (this.options.height - this.viewBox.height * zoom) / 2
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// Force updating CTM
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this.updateCTMOnNextFrame()
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this.options.svg.removeAttribute('viewBox')
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} else {
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this.simpleViewBoxCache()
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}
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}
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/**
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* Recalculate viewport sizes and update viewBox cache
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*/
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ShadowViewport.prototype.simpleViewBoxCache = function() {
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var bBox = this.viewport.getBBox()
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this.viewBox.x = bBox.x
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this.viewBox.y = bBox.y
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this.viewBox.width = bBox.width
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this.viewBox.height = bBox.height
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}
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/**
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* Returns a viewbox object. Safe to alter
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*
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* @return {Object} viewbox object
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*/
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ShadowViewport.prototype.getViewBox = function() {
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return Utils.extend({}, this.viewBox)
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}
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/**
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* Get initial zoom and pan values. Save them into originalState
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* Parses viewBox attribute to alter initial sizes
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*
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* @return {CTM} CTM object based on options
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*/
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ShadowViewport.prototype.processCTM = function() {
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var newCTM = this.getCTM()
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if (this.options.fit || this.options.contain) {
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var newScale;
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if (this.options.fit) {
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newScale = Math.min(this.options.width/this.viewBox.width, this.options.height/this.viewBox.height);
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} else {
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newScale = Math.max(this.options.width/this.viewBox.width, this.options.height/this.viewBox.height);
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}
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newCTM.a = newScale; //x-scale
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newCTM.d = newScale; //y-scale
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newCTM.e = -this.viewBox.x * newScale; //x-transform
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newCTM.f = -this.viewBox.y * newScale; //y-transform
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}
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if (this.options.center) {
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var offsetX = (this.options.width - (this.viewBox.width + this.viewBox.x * 2) * newCTM.a) * 0.5
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, offsetY = (this.options.height - (this.viewBox.height + this.viewBox.y * 2) * newCTM.a) * 0.5
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newCTM.e = offsetX
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newCTM.f = offsetY
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}
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// Cache initial values. Based on activeState and fix+center opitons
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this.originalState.zoom = newCTM.a
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this.originalState.x = newCTM.e
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this.originalState.y = newCTM.f
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return newCTM
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}
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/**
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* Return originalState object. Safe to alter
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*
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* @return {Object}
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*/
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ShadowViewport.prototype.getOriginalState = function() {
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return Utils.extend({}, this.originalState)
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}
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/**
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* Return actualState object. Safe to alter
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*
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* @return {Object}
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*/
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ShadowViewport.prototype.getState = function() {
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return Utils.extend({}, this.activeState)
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}
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/**
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* Get zoom scale
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*
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* @return {Float} zoom scale
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*/
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ShadowViewport.prototype.getZoom = function() {
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return this.activeState.zoom
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}
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/**
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* Get zoom scale for pubilc usage
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*
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* @return {Float} zoom scale
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*/
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ShadowViewport.prototype.getRelativeZoom = function() {
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return this.activeState.zoom / this.originalState.zoom
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}
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/**
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* Compute zoom scale for pubilc usage
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*
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* @return {Float} zoom scale
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*/
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ShadowViewport.prototype.computeRelativeZoom = function(scale) {
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return scale / this.originalState.zoom
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}
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/**
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* Get pan
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*
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* @return {Object}
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*/
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ShadowViewport.prototype.getPan = function() {
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return {x: this.activeState.x, y: this.activeState.y}
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}
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/**
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* Return cached viewport CTM value that can be safely modified
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*
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* @return {SVGMatrix}
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*/
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ShadowViewport.prototype.getCTM = function() {
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var safeCTM = this.options.svg.createSVGMatrix()
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// Copy values manually as in FF they are not itterable
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safeCTM.a = this.activeState.zoom
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safeCTM.b = 0
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safeCTM.c = 0
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safeCTM.d = this.activeState.zoom
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safeCTM.e = this.activeState.x
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safeCTM.f = this.activeState.y
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return safeCTM
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}
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/**
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* Set a new CTM
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*
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* @param {SVGMatrix} newCTM
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*/
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ShadowViewport.prototype.setCTM = function(newCTM) {
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var willZoom = this.isZoomDifferent(newCTM)
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, willPan = this.isPanDifferent(newCTM)
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if (willZoom || willPan) {
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// Before zoom
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if (willZoom) {
|
|
// If returns false then cancel zooming
|
|
if (this.options.beforeZoom(this.getRelativeZoom(), this.computeRelativeZoom(newCTM.a)) === false) {
|
|
newCTM.a = newCTM.d = this.activeState.zoom
|
|
willZoom = false
|
|
} else {
|
|
this.updateCache(newCTM);
|
|
this.options.onZoom(this.getRelativeZoom())
|
|
}
|
|
}
|
|
|
|
// Before pan
|
|
if (willPan) {
|
|
var preventPan = this.options.beforePan(this.getPan(), {x: newCTM.e, y: newCTM.f})
|
|
// If prevent pan is an object
|
|
, preventPanX = false
|
|
, preventPanY = false
|
|
|
|
// If prevent pan is Boolean false
|
|
if (preventPan === false) {
|
|
// Set x and y same as before
|
|
newCTM.e = this.getPan().x
|
|
newCTM.f = this.getPan().y
|
|
|
|
preventPanX = preventPanY = true
|
|
} else if (Utils.isObject(preventPan)) {
|
|
// Check for X axes attribute
|
|
if (preventPan.x === false) {
|
|
// Prevent panning on x axes
|
|
newCTM.e = this.getPan().x
|
|
preventPanX = true
|
|
} else if (Utils.isNumber(preventPan.x)) {
|
|
// Set a custom pan value
|
|
newCTM.e = preventPan.x
|
|
}
|
|
|
|
// Check for Y axes attribute
|
|
if (preventPan.y === false) {
|
|
// Prevent panning on x axes
|
|
newCTM.f = this.getPan().y
|
|
preventPanY = true
|
|
} else if (Utils.isNumber(preventPan.y)) {
|
|
// Set a custom pan value
|
|
newCTM.f = preventPan.y
|
|
}
|
|
}
|
|
|
|
// Update willPan flag
|
|
// Check if newCTM is still different
|
|
if ((preventPanX && preventPanY) || !this.isPanDifferent(newCTM)) {
|
|
willPan = false
|
|
} else {
|
|
this.updateCache(newCTM);
|
|
this.options.onPan(this.getPan());
|
|
}
|
|
}
|
|
|
|
// Check again if should zoom or pan
|
|
if (willZoom || willPan) {
|
|
this.updateCTMOnNextFrame()
|
|
}
|
|
}
|
|
}
|
|
|
|
ShadowViewport.prototype.isZoomDifferent = function(newCTM) {
|
|
return this.activeState.zoom !== newCTM.a
|
|
}
|
|
|
|
ShadowViewport.prototype.isPanDifferent = function(newCTM) {
|
|
return this.activeState.x !== newCTM.e || this.activeState.y !== newCTM.f
|
|
}
|
|
|
|
|
|
/**
|
|
* Update cached CTM and active state
|
|
*
|
|
* @param {SVGMatrix} newCTM
|
|
*/
|
|
ShadowViewport.prototype.updateCache = function(newCTM) {
|
|
this.activeState.zoom = newCTM.a
|
|
this.activeState.x = newCTM.e
|
|
this.activeState.y = newCTM.f
|
|
}
|
|
|
|
ShadowViewport.prototype.pendingUpdate = false
|
|
|
|
/**
|
|
* Place a request to update CTM on next Frame
|
|
*/
|
|
ShadowViewport.prototype.updateCTMOnNextFrame = function() {
|
|
if (!this.pendingUpdate) {
|
|
// Lock
|
|
this.pendingUpdate = true
|
|
|
|
// Throttle next update
|
|
this.requestAnimationFrame.call(window, this.updateCTMCached)
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update viewport CTM with cached CTM
|
|
*/
|
|
ShadowViewport.prototype.updateCTM = function() {
|
|
var ctm = this.getCTM()
|
|
|
|
// Updates SVG element
|
|
SvgUtils.setCTM(this.viewport, ctm, this.defs)
|
|
|
|
// Free the lock
|
|
this.pendingUpdate = false
|
|
|
|
// Notify about the update
|
|
if(this.options.onUpdatedCTM) {
|
|
this.options.onUpdatedCTM(ctm)
|
|
}
|
|
}
|
|
|
|
module.exports = function(viewport, options){
|
|
return new ShadowViewport(viewport, options)
|
|
}
|
|
|
|
},{"./svg-utilities":5,"./utilities":7}],4:[function(require,module,exports){
|
|
var Wheel = require('./uniwheel')
|
|
, ControlIcons = require('./control-icons')
|
|
, Utils = require('./utilities')
|
|
, SvgUtils = require('./svg-utilities')
|
|
, ShadowViewport = require('./shadow-viewport')
|
|
|
|
var SvgPanZoom = function(svg, options) {
|
|
this.init(svg, options)
|
|
}
|
|
|
|
var optionsDefaults = {
|
|
viewportSelector: '.svg-pan-zoom_viewport' // Viewport selector. Can be querySelector string or SVGElement
|
|
, panEnabled: true // enable or disable panning (default enabled)
|
|
, controlIconsEnabled: false // insert icons to give user an option in addition to mouse events to control pan/zoom (default disabled)
|
|
, zoomEnabled: true // enable or disable zooming (default enabled)
|
|
, dblClickZoomEnabled: true // enable or disable zooming by double clicking (default enabled)
|
|
, mouseWheelZoomEnabled: true // enable or disable zooming by mouse wheel (default enabled)
|
|
, preventMouseEventsDefault: true // enable or disable preventDefault for mouse events
|
|
, zoomScaleSensitivity: 0.1 // Zoom sensitivity
|
|
, minZoom: 0.5 // Minimum Zoom level
|
|
, maxZoom: 10 // Maximum Zoom level
|
|
, fit: true // enable or disable viewport fit in SVG (default true)
|
|
, contain: false // enable or disable viewport contain the svg (default false)
|
|
, center: true // enable or disable viewport centering in SVG (default true)
|
|
, refreshRate: 'auto' // Maximum number of frames per second (altering SVG's viewport)
|
|
, beforeZoom: null
|
|
, onZoom: null
|
|
, beforePan: null
|
|
, onPan: null
|
|
, customEventsHandler: null
|
|
, eventsListenerElement: null
|
|
, onUpdatedCTM: null
|
|
}
|
|
|
|
SvgPanZoom.prototype.init = function(svg, options) {
|
|
var that = this
|
|
|
|
this.svg = svg
|
|
this.defs = svg.querySelector('defs')
|
|
|
|
// Add default attributes to SVG
|
|
SvgUtils.setupSvgAttributes(this.svg)
|
|
|
|
// Set options
|
|
this.options = Utils.extend(Utils.extend({}, optionsDefaults), options)
|
|
|
|
// Set default state
|
|
this.state = 'none'
|
|
|
|
// Get dimensions
|
|
var boundingClientRectNormalized = SvgUtils.getBoundingClientRectNormalized(svg)
|
|
this.width = boundingClientRectNormalized.width
|
|
this.height = boundingClientRectNormalized.height
|
|
|
|
// Init shadow viewport
|
|
this.viewport = ShadowViewport(SvgUtils.getOrCreateViewport(this.svg, this.options.viewportSelector), {
|
|
svg: this.svg
|
|
, width: this.width
|
|
, height: this.height
|
|
, fit: this.options.fit
|
|
, contain: this.options.contain
|
|
, center: this.options.center
|
|
, refreshRate: this.options.refreshRate
|
|
// Put callbacks into functions as they can change through time
|
|
, beforeZoom: function(oldScale, newScale) {
|
|
if (that.viewport && that.options.beforeZoom) {return that.options.beforeZoom(oldScale, newScale)}
|
|
}
|
|
, onZoom: function(scale) {
|
|
if (that.viewport && that.options.onZoom) {return that.options.onZoom(scale)}
|
|
}
|
|
, beforePan: function(oldPoint, newPoint) {
|
|
if (that.viewport && that.options.beforePan) {return that.options.beforePan(oldPoint, newPoint)}
|
|
}
|
|
, onPan: function(point) {
|
|
if (that.viewport && that.options.onPan) {return that.options.onPan(point)}
|
|
}
|
|
, onUpdatedCTM: function(ctm) {
|
|
if (that.viewport && that.options.onUpdatedCTM) {return that.options.onUpdatedCTM(ctm)}
|
|
}
|
|
})
|
|
|
|
// Wrap callbacks into public API context
|
|
var publicInstance = this.getPublicInstance()
|
|
publicInstance.setBeforeZoom(this.options.beforeZoom)
|
|
publicInstance.setOnZoom(this.options.onZoom)
|
|
publicInstance.setBeforePan(this.options.beforePan)
|
|
publicInstance.setOnPan(this.options.onPan)
|
|
publicInstance.setOnUpdatedCTM(this.options.onUpdatedCTM)
|
|
|
|
if (this.options.controlIconsEnabled) {
|
|
ControlIcons.enable(this)
|
|
}
|
|
|
|
// Init events handlers
|
|
this.lastMouseWheelEventTime = Date.now()
|
|
this.setupHandlers()
|
|
}
|
|
|
|
/**
|
|
* Register event handlers
|
|
*/
|
|
SvgPanZoom.prototype.setupHandlers = function() {
|
|
var that = this
|
|
, prevEvt = null // use for touchstart event to detect double tap
|
|
;
|
|
|
|
this.eventListeners = {
|
|
// Mouse down group
|
|
mousedown: function(evt) {
|
|
var result = that.handleMouseDown(evt, prevEvt);
|
|
prevEvt = evt
|
|
return result;
|
|
}
|
|
, touchstart: function(evt) {
|
|
var result = that.handleMouseDown(evt, prevEvt);
|
|
prevEvt = evt
|
|
return result;
|
|
}
|
|
|
|
// Mouse up group
|
|
, mouseup: function(evt) {
|
|
return that.handleMouseUp(evt);
|
|
}
|
|
, touchend: function(evt) {
|
|
return that.handleMouseUp(evt);
|
|
}
|
|
|
|
// Mouse move group
|
|
, mousemove: function(evt) {
|
|
return that.handleMouseMove(evt);
|
|
}
|
|
, touchmove: function(evt) {
|
|
return that.handleMouseMove(evt);
|
|
}
|
|
|
|
// Mouse leave group
|
|
, mouseleave: function(evt) {
|
|
return that.handleMouseUp(evt);
|
|
}
|
|
, touchleave: function(evt) {
|
|
return that.handleMouseUp(evt);
|
|
}
|
|
, touchcancel: function(evt) {
|
|
return that.handleMouseUp(evt);
|
|
}
|
|
}
|
|
|
|
// Init custom events handler if available
|
|
if (this.options.customEventsHandler != null) { // jshint ignore:line
|
|
this.options.customEventsHandler.init({
|
|
svgElement: this.svg
|
|
, eventsListenerElement: this.options.eventsListenerElement
|
|
, instance: this.getPublicInstance()
|
|
})
|
|
|
|
// Custom event handler may halt builtin listeners
|
|
var haltEventListeners = this.options.customEventsHandler.haltEventListeners
|
|
if (haltEventListeners && haltEventListeners.length) {
|
|
for (var i = haltEventListeners.length - 1; i >= 0; i--) {
|
|
if (this.eventListeners.hasOwnProperty(haltEventListeners[i])) {
|
|
delete this.eventListeners[haltEventListeners[i]]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Bind eventListeners
|
|
for (var event in this.eventListeners) {
|
|
// Attach event to eventsListenerElement or SVG if not available
|
|
(this.options.eventsListenerElement || this.svg)
|
|
.addEventListener(event, this.eventListeners[event], false)
|
|
}
|
|
|
|
// Zoom using mouse wheel
|
|
if (this.options.mouseWheelZoomEnabled) {
|
|
this.options.mouseWheelZoomEnabled = false // set to false as enable will set it back to true
|
|
this.enableMouseWheelZoom()
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Enable ability to zoom using mouse wheel
|
|
*/
|
|
SvgPanZoom.prototype.enableMouseWheelZoom = function() {
|
|
if (!this.options.mouseWheelZoomEnabled) {
|
|
var that = this
|
|
|
|
// Mouse wheel listener
|
|
this.wheelListener = function(evt) {
|
|
return that.handleMouseWheel(evt);
|
|
}
|
|
|
|
// Bind wheelListener
|
|
Wheel.on(this.options.eventsListenerElement || this.svg, this.wheelListener, false)
|
|
|
|
this.options.mouseWheelZoomEnabled = true
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Disable ability to zoom using mouse wheel
|
|
*/
|
|
SvgPanZoom.prototype.disableMouseWheelZoom = function() {
|
|
if (this.options.mouseWheelZoomEnabled) {
|
|
Wheel.off(this.options.eventsListenerElement || this.svg, this.wheelListener, false)
|
|
this.options.mouseWheelZoomEnabled = false
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handle mouse wheel event
|
|
*
|
|
* @param {Event} evt
|
|
*/
|
|
SvgPanZoom.prototype.handleMouseWheel = function(evt) {
|
|
if (!this.options.zoomEnabled || this.state !== 'none') {
|
|
return;
|
|
}
|
|
|
|
if (this.options.preventMouseEventsDefault){
|
|
if (evt.preventDefault) {
|
|
evt.preventDefault();
|
|
} else {
|
|
evt.returnValue = false;
|
|
}
|
|
}
|
|
|
|
// Default delta in case that deltaY is not available
|
|
var delta = evt.deltaY || 1
|
|
, timeDelta = Date.now() - this.lastMouseWheelEventTime
|
|
, divider = 3 + Math.max(0, 30 - timeDelta)
|
|
|
|
// Update cache
|
|
this.lastMouseWheelEventTime = Date.now()
|
|
|
|
// Make empirical adjustments for browsers that give deltaY in pixels (deltaMode=0)
|
|
if ('deltaMode' in evt && evt.deltaMode === 0 && evt.wheelDelta) {
|
|
delta = evt.deltaY === 0 ? 0 : Math.abs(evt.wheelDelta) / evt.deltaY
|
|
}
|
|
|
|
delta = -0.3 < delta && delta < 0.3 ? delta : (delta > 0 ? 1 : -1) * Math.log(Math.abs(delta) + 10) / divider
|
|
|
|
var inversedScreenCTM = this.svg.getScreenCTM().inverse()
|
|
, relativeMousePoint = SvgUtils.getEventPoint(evt, this.svg).matrixTransform(inversedScreenCTM)
|
|
, zoom = Math.pow(1 + this.options.zoomScaleSensitivity, (-1) * delta); // multiplying by neg. 1 so as to make zoom in/out behavior match Google maps behavior
|
|
|
|
this.zoomAtPoint(zoom, relativeMousePoint)
|
|
}
|
|
|
|
/**
|
|
* Zoom in at a SVG point
|
|
*
|
|
* @param {SVGPoint} point
|
|
* @param {Float} zoomScale Number representing how much to zoom
|
|
* @param {Boolean} zoomAbsolute Default false. If true, zoomScale is treated as an absolute value.
|
|
* Otherwise, zoomScale is treated as a multiplied (e.g. 1.10 would zoom in 10%)
|
|
*/
|
|
SvgPanZoom.prototype.zoomAtPoint = function(zoomScale, point, zoomAbsolute) {
|
|
var originalState = this.viewport.getOriginalState()
|
|
|
|
if (!zoomAbsolute) {
|
|
// Fit zoomScale in set bounds
|
|
if (this.getZoom() * zoomScale < this.options.minZoom * originalState.zoom) {
|
|
zoomScale = (this.options.minZoom * originalState.zoom) / this.getZoom()
|
|
} else if (this.getZoom() * zoomScale > this.options.maxZoom * originalState.zoom) {
|
|
zoomScale = (this.options.maxZoom * originalState.zoom) / this.getZoom()
|
|
}
|
|
} else {
|
|
// Fit zoomScale in set bounds
|
|
zoomScale = Math.max(this.options.minZoom * originalState.zoom, Math.min(this.options.maxZoom * originalState.zoom, zoomScale))
|
|
// Find relative scale to achieve desired scale
|
|
zoomScale = zoomScale/this.getZoom()
|
|
}
|
|
|
|
var oldCTM = this.viewport.getCTM()
|
|
, relativePoint = point.matrixTransform(oldCTM.inverse())
|
|
, modifier = this.svg.createSVGMatrix().translate(relativePoint.x, relativePoint.y).scale(zoomScale).translate(-relativePoint.x, -relativePoint.y)
|
|
, newCTM = oldCTM.multiply(modifier)
|
|
|
|
if (newCTM.a !== oldCTM.a) {
|
|
this.viewport.setCTM(newCTM)
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Zoom at center point
|
|
*
|
|
* @param {Float} scale
|
|
* @param {Boolean} absolute Marks zoom scale as relative or absolute
|
|
*/
|
|
SvgPanZoom.prototype.zoom = function(scale, absolute) {
|
|
this.zoomAtPoint(scale, SvgUtils.getSvgCenterPoint(this.svg, this.width, this.height), absolute)
|
|
}
|
|
|
|
/**
|
|
* Zoom used by public instance
|
|
*
|
|
* @param {Float} scale
|
|
* @param {Boolean} absolute Marks zoom scale as relative or absolute
|
|
*/
|
|
SvgPanZoom.prototype.publicZoom = function(scale, absolute) {
|
|
if (absolute) {
|
|
scale = this.computeFromRelativeZoom(scale)
|
|
}
|
|
|
|
this.zoom(scale, absolute)
|
|
}
|
|
|
|
/**
|
|
* Zoom at point used by public instance
|
|
*
|
|
* @param {Float} scale
|
|
* @param {SVGPoint|Object} point An object that has x and y attributes
|
|
* @param {Boolean} absolute Marks zoom scale as relative or absolute
|
|
*/
|
|
SvgPanZoom.prototype.publicZoomAtPoint = function(scale, point, absolute) {
|
|
if (absolute) {
|
|
// Transform zoom into a relative value
|
|
scale = this.computeFromRelativeZoom(scale)
|
|
}
|
|
|
|
// If not a SVGPoint but has x and y then create a SVGPoint
|
|
if (Utils.getType(point) !== 'SVGPoint') {
|
|
if('x' in point && 'y' in point) {
|
|
point = SvgUtils.createSVGPoint(this.svg, point.x, point.y)
|
|
} else {
|
|
throw new Error('Given point is invalid')
|
|
}
|
|
}
|
|
|
|
this.zoomAtPoint(scale, point, absolute)
|
|
}
|
|
|
|
/**
|
|
* Get zoom scale
|
|
*
|
|
* @return {Float} zoom scale
|
|
*/
|
|
SvgPanZoom.prototype.getZoom = function() {
|
|
return this.viewport.getZoom()
|
|
}
|
|
|
|
/**
|
|
* Get zoom scale for public usage
|
|
*
|
|
* @return {Float} zoom scale
|
|
*/
|
|
SvgPanZoom.prototype.getRelativeZoom = function() {
|
|
return this.viewport.getRelativeZoom()
|
|
}
|
|
|
|
/**
|
|
* Compute actual zoom from public zoom
|
|
*
|
|
* @param {Float} zoom
|
|
* @return {Float} zoom scale
|
|
*/
|
|
SvgPanZoom.prototype.computeFromRelativeZoom = function(zoom) {
|
|
return zoom * this.viewport.getOriginalState().zoom
|
|
}
|
|
|
|
/**
|
|
* Set zoom to initial state
|
|
*/
|
|
SvgPanZoom.prototype.resetZoom = function() {
|
|
var originalState = this.viewport.getOriginalState()
|
|
|
|
this.zoom(originalState.zoom, true);
|
|
}
|
|
|
|
/**
|
|
* Set pan to initial state
|
|
*/
|
|
SvgPanZoom.prototype.resetPan = function() {
|
|
this.pan(this.viewport.getOriginalState());
|
|
}
|
|
|
|
/**
|
|
* Set pan and zoom to initial state
|
|
*/
|
|
SvgPanZoom.prototype.reset = function() {
|
|
this.resetZoom()
|
|
this.resetPan()
|
|
}
|
|
|
|
/**
|
|
* Handle double click event
|
|
* See handleMouseDown() for alternate detection method
|
|
*
|
|
* @param {Event} evt
|
|
*/
|
|
SvgPanZoom.prototype.handleDblClick = function(evt) {
|
|
if (this.options.preventMouseEventsDefault) {
|
|
if (evt.preventDefault) {
|
|
evt.preventDefault()
|
|
} else {
|
|
evt.returnValue = false
|
|
}
|
|
}
|
|
|
|
// Check if target was a control button
|
|
if (this.options.controlIconsEnabled) {
|
|
var targetClass = evt.target.getAttribute('class') || ''
|
|
if (targetClass.indexOf('svg-pan-zoom-control') > -1) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
var zoomFactor
|
|
|
|
if (evt.shiftKey) {
|
|
zoomFactor = 1/((1 + this.options.zoomScaleSensitivity) * 2) // zoom out when shift key pressed
|
|
} else {
|
|
zoomFactor = (1 + this.options.zoomScaleSensitivity) * 2
|
|
}
|
|
|
|
var point = SvgUtils.getEventPoint(evt, this.svg).matrixTransform(this.svg.getScreenCTM().inverse())
|
|
this.zoomAtPoint(zoomFactor, point)
|
|
}
|
|
|
|
/**
|
|
* Handle click event
|
|
*
|
|
* @param {Event} evt
|
|
*/
|
|
SvgPanZoom.prototype.handleMouseDown = function(evt, prevEvt) {
|
|
if (this.options.preventMouseEventsDefault) {
|
|
if (evt.preventDefault) {
|
|
evt.preventDefault()
|
|
} else {
|
|
evt.returnValue = false
|
|
}
|
|
}
|
|
|
|
Utils.mouseAndTouchNormalize(evt, this.svg)
|
|
|
|
// Double click detection; more consistent than ondblclick
|
|
if (this.options.dblClickZoomEnabled && Utils.isDblClick(evt, prevEvt)){
|
|
this.handleDblClick(evt)
|
|
} else {
|
|
// Pan mode
|
|
this.state = 'pan'
|
|
this.firstEventCTM = this.viewport.getCTM()
|
|
this.stateOrigin = SvgUtils.getEventPoint(evt, this.svg).matrixTransform(this.firstEventCTM.inverse())
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handle mouse move event
|
|
*
|
|
* @param {Event} evt
|
|
*/
|
|
SvgPanZoom.prototype.handleMouseMove = function(evt) {
|
|
if (this.options.preventMouseEventsDefault) {
|
|
if (evt.preventDefault) {
|
|
evt.preventDefault()
|
|
} else {
|
|
evt.returnValue = false
|
|
}
|
|
}
|
|
|
|
if (this.state === 'pan' && this.options.panEnabled) {
|
|
// Pan mode
|
|
var point = SvgUtils.getEventPoint(evt, this.svg).matrixTransform(this.firstEventCTM.inverse())
|
|
, viewportCTM = this.firstEventCTM.translate(point.x - this.stateOrigin.x, point.y - this.stateOrigin.y)
|
|
|
|
this.viewport.setCTM(viewportCTM)
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handle mouse button release event
|
|
*
|
|
* @param {Event} evt
|
|
*/
|
|
SvgPanZoom.prototype.handleMouseUp = function(evt) {
|
|
if (this.options.preventMouseEventsDefault) {
|
|
if (evt.preventDefault) {
|
|
evt.preventDefault()
|
|
} else {
|
|
evt.returnValue = false
|
|
}
|
|
}
|
|
|
|
if (this.state === 'pan') {
|
|
// Quit pan mode
|
|
this.state = 'none'
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adjust viewport size (only) so it will fit in SVG
|
|
* Does not center image
|
|
*/
|
|
SvgPanZoom.prototype.fit = function() {
|
|
var viewBox = this.viewport.getViewBox()
|
|
, newScale = Math.min(this.width/viewBox.width, this.height/viewBox.height)
|
|
|
|
this.zoom(newScale, true)
|
|
}
|
|
|
|
/**
|
|
* Adjust viewport size (only) so it will contain the SVG
|
|
* Does not center image
|
|
*/
|
|
SvgPanZoom.prototype.contain = function() {
|
|
var viewBox = this.viewport.getViewBox()
|
|
, newScale = Math.max(this.width/viewBox.width, this.height/viewBox.height)
|
|
|
|
this.zoom(newScale, true)
|
|
}
|
|
|
|
/**
|
|
* Adjust viewport pan (only) so it will be centered in SVG
|
|
* Does not zoom/fit/contain image
|
|
*/
|
|
SvgPanZoom.prototype.center = function() {
|
|
var viewBox = this.viewport.getViewBox()
|
|
, offsetX = (this.width - (viewBox.width + viewBox.x * 2) * this.getZoom()) * 0.5
|
|
, offsetY = (this.height - (viewBox.height + viewBox.y * 2) * this.getZoom()) * 0.5
|
|
|
|
this.getPublicInstance().pan({x: offsetX, y: offsetY})
|
|
}
|
|
|
|
/**
|
|
* Update content cached BorderBox
|
|
* Use when viewport contents change
|
|
*/
|
|
SvgPanZoom.prototype.updateBBox = function() {
|
|
this.viewport.simpleViewBoxCache()
|
|
}
|
|
|
|
/**
|
|
* Pan to a rendered position
|
|
*
|
|
* @param {Object} point {x: 0, y: 0}
|
|
*/
|
|
SvgPanZoom.prototype.pan = function(point) {
|
|
var viewportCTM = this.viewport.getCTM()
|
|
viewportCTM.e = point.x
|
|
viewportCTM.f = point.y
|
|
this.viewport.setCTM(viewportCTM)
|
|
}
|
|
|
|
/**
|
|
* Relatively pan the graph by a specified rendered position vector
|
|
*
|
|
* @param {Object} point {x: 0, y: 0}
|
|
*/
|
|
SvgPanZoom.prototype.panBy = function(point) {
|
|
var viewportCTM = this.viewport.getCTM()
|
|
viewportCTM.e += point.x
|
|
viewportCTM.f += point.y
|
|
this.viewport.setCTM(viewportCTM)
|
|
}
|
|
|
|
/**
|
|
* Get pan vector
|
|
*
|
|
* @return {Object} {x: 0, y: 0}
|
|
*/
|
|
SvgPanZoom.prototype.getPan = function() {
|
|
var state = this.viewport.getState()
|
|
|
|
return {x: state.x, y: state.y}
|
|
}
|
|
|
|
/**
|
|
* Recalculates cached svg dimensions and controls position
|
|
*/
|
|
SvgPanZoom.prototype.resize = function() {
|
|
// Get dimensions
|
|
var boundingClientRectNormalized = SvgUtils.getBoundingClientRectNormalized(this.svg)
|
|
this.width = boundingClientRectNormalized.width
|
|
this.height = boundingClientRectNormalized.height
|
|
|
|
// Recalculate original state
|
|
var viewport = this.viewport
|
|
viewport.options.width = this.width
|
|
viewport.options.height = this.height
|
|
viewport.processCTM()
|
|
|
|
// Reposition control icons by re-enabling them
|
|
if (this.options.controlIconsEnabled) {
|
|
this.getPublicInstance().disableControlIcons()
|
|
this.getPublicInstance().enableControlIcons()
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Unbind mouse events, free callbacks and destroy public instance
|
|
*/
|
|
SvgPanZoom.prototype.destroy = function() {
|
|
var that = this
|
|
|
|
// Free callbacks
|
|
this.beforeZoom = null
|
|
this.onZoom = null
|
|
this.beforePan = null
|
|
this.onPan = null
|
|
this.onUpdatedCTM = null
|
|
|
|
// Destroy custom event handlers
|
|
if (this.options.customEventsHandler != null) { // jshint ignore:line
|
|
this.options.customEventsHandler.destroy({
|
|
svgElement: this.svg
|
|
, eventsListenerElement: this.options.eventsListenerElement
|
|
, instance: this.getPublicInstance()
|
|
})
|
|
}
|
|
|
|
// Unbind eventListeners
|
|
for (var event in this.eventListeners) {
|
|
(this.options.eventsListenerElement || this.svg)
|
|
.removeEventListener(event, this.eventListeners[event], false)
|
|
}
|
|
|
|
// Unbind wheelListener
|
|
this.disableMouseWheelZoom()
|
|
|
|
// Remove control icons
|
|
this.getPublicInstance().disableControlIcons()
|
|
|
|
// Reset zoom and pan
|
|
this.reset()
|
|
|
|
// Remove instance from instancesStore
|
|
instancesStore = instancesStore.filter(function(instance){
|
|
return instance.svg !== that.svg
|
|
})
|
|
|
|
// Delete options and its contents
|
|
delete this.options
|
|
|
|
// Delete viewport to make public shadow viewport functions uncallable
|
|
delete this.viewport
|
|
|
|
// Destroy public instance and rewrite getPublicInstance
|
|
delete this.publicInstance
|
|
delete this.pi
|
|
this.getPublicInstance = function(){
|
|
return null
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns a public instance object
|
|
*
|
|
* @return {Object} Public instance object
|
|
*/
|
|
SvgPanZoom.prototype.getPublicInstance = function() {
|
|
var that = this
|
|
|
|
// Create cache
|
|
if (!this.publicInstance) {
|
|
this.publicInstance = this.pi = {
|
|
// Pan
|
|
enablePan: function() {that.options.panEnabled = true; return that.pi}
|
|
, disablePan: function() {that.options.panEnabled = false; return that.pi}
|
|
, isPanEnabled: function() {return !!that.options.panEnabled}
|
|
, pan: function(point) {that.pan(point); return that.pi}
|
|
, panBy: function(point) {that.panBy(point); return that.pi}
|
|
, getPan: function() {return that.getPan()}
|
|
// Pan event
|
|
, setBeforePan: function(fn) {that.options.beforePan = fn === null ? null : Utils.proxy(fn, that.publicInstance); return that.pi}
|
|
, setOnPan: function(fn) {that.options.onPan = fn === null ? null : Utils.proxy(fn, that.publicInstance); return that.pi}
|
|
// Zoom and Control Icons
|
|
, enableZoom: function() {that.options.zoomEnabled = true; return that.pi}
|
|
, disableZoom: function() {that.options.zoomEnabled = false; return that.pi}
|
|
, isZoomEnabled: function() {return !!that.options.zoomEnabled}
|
|
, enableControlIcons: function() {
|
|
if (!that.options.controlIconsEnabled) {
|
|
that.options.controlIconsEnabled = true
|
|
ControlIcons.enable(that)
|
|
}
|
|
return that.pi
|
|
}
|
|
, disableControlIcons: function() {
|
|
if (that.options.controlIconsEnabled) {
|
|
that.options.controlIconsEnabled = false;
|
|
ControlIcons.disable(that)
|
|
}
|
|
return that.pi
|
|
}
|
|
, isControlIconsEnabled: function() {return !!that.options.controlIconsEnabled}
|
|
// Double click zoom
|
|
, enableDblClickZoom: function() {that.options.dblClickZoomEnabled = true; return that.pi}
|
|
, disableDblClickZoom: function() {that.options.dblClickZoomEnabled = false; return that.pi}
|
|
, isDblClickZoomEnabled: function() {return !!that.options.dblClickZoomEnabled}
|
|
// Mouse wheel zoom
|
|
, enableMouseWheelZoom: function() {that.enableMouseWheelZoom(); return that.pi}
|
|
, disableMouseWheelZoom: function() {that.disableMouseWheelZoom(); return that.pi}
|
|
, isMouseWheelZoomEnabled: function() {return !!that.options.mouseWheelZoomEnabled}
|
|
// Zoom scale and bounds
|
|
, setZoomScaleSensitivity: function(scale) {that.options.zoomScaleSensitivity = scale; return that.pi}
|
|
, setMinZoom: function(zoom) {that.options.minZoom = zoom; return that.pi}
|
|
, setMaxZoom: function(zoom) {that.options.maxZoom = zoom; return that.pi}
|
|
// Zoom event
|
|
, setBeforeZoom: function(fn) {that.options.beforeZoom = fn === null ? null : Utils.proxy(fn, that.publicInstance); return that.pi}
|
|
, setOnZoom: function(fn) {that.options.onZoom = fn === null ? null : Utils.proxy(fn, that.publicInstance); return that.pi}
|
|
// Zooming
|
|
, zoom: function(scale) {that.publicZoom(scale, true); return that.pi}
|
|
, zoomBy: function(scale) {that.publicZoom(scale, false); return that.pi}
|
|
, zoomAtPoint: function(scale, point) {that.publicZoomAtPoint(scale, point, true); return that.pi}
|
|
, zoomAtPointBy: function(scale, point) {that.publicZoomAtPoint(scale, point, false); return that.pi}
|
|
, zoomIn: function() {this.zoomBy(1 + that.options.zoomScaleSensitivity); return that.pi}
|
|
, zoomOut: function() {this.zoomBy(1 / (1 + that.options.zoomScaleSensitivity)); return that.pi}
|
|
, getZoom: function() {return that.getRelativeZoom()}
|
|
// CTM update
|
|
, setOnUpdatedCTM: function(fn) {that.options.onUpdatedCTM = fn === null ? null : Utils.proxy(fn, that.publicInstance); return that.pi}
|
|
// Reset
|
|
, resetZoom: function() {that.resetZoom(); return that.pi}
|
|
, resetPan: function() {that.resetPan(); return that.pi}
|
|
, reset: function() {that.reset(); return that.pi}
|
|
// Fit, Contain and Center
|
|
, fit: function() {that.fit(); return that.pi}
|
|
, contain: function() {that.contain(); return that.pi}
|
|
, center: function() {that.center(); return that.pi}
|
|
// Size and Resize
|
|
, updateBBox: function() {that.updateBBox(); return that.pi}
|
|
, resize: function() {that.resize(); return that.pi}
|
|
, getSizes: function() {
|
|
return {
|
|
width: that.width
|
|
, height: that.height
|
|
, realZoom: that.getZoom()
|
|
, viewBox: that.viewport.getViewBox()
|
|
}
|
|
}
|
|
// Destroy
|
|
, destroy: function() {that.destroy(); return that.pi}
|
|
}
|
|
}
|
|
|
|
return this.publicInstance
|
|
}
|
|
|
|
/**
|
|
* Stores pairs of instances of SvgPanZoom and SVG
|
|
* Each pair is represented by an object {svg: SVGSVGElement, instance: SvgPanZoom}
|
|
*
|
|
* @type {Array}
|
|
*/
|
|
var instancesStore = []
|
|
|
|
var svgPanZoom = function(elementOrSelector, options){
|
|
var svg = Utils.getSvg(elementOrSelector)
|
|
|
|
if (svg === null) {
|
|
return null
|
|
} else {
|
|
// Look for existent instance
|
|
for(var i = instancesStore.length - 1; i >= 0; i--) {
|
|
if (instancesStore[i].svg === svg) {
|
|
return instancesStore[i].instance.getPublicInstance()
|
|
}
|
|
}
|
|
|
|
// If instance not found - create one
|
|
instancesStore.push({
|
|
svg: svg
|
|
, instance: new SvgPanZoom(svg, options)
|
|
})
|
|
|
|
// Return just pushed instance
|
|
return instancesStore[instancesStore.length - 1].instance.getPublicInstance()
|
|
}
|
|
}
|
|
|
|
module.exports = svgPanZoom;
|
|
|
|
},{"./control-icons":2,"./shadow-viewport":3,"./svg-utilities":5,"./uniwheel":6,"./utilities":7}],5:[function(require,module,exports){
|
|
var Utils = require('./utilities')
|
|
, _browser = 'unknown'
|
|
;
|
|
|
|
// http://stackoverflow.com/questions/9847580/how-to-detect-safari-chrome-ie-firefox-and-opera-browser
|
|
if (/*@cc_on!@*/false || !!document.documentMode) { // internet explorer
|
|
_browser = 'ie';
|
|
}
|
|
|
|
module.exports = {
|
|
svgNS: 'http://www.w3.org/2000/svg'
|
|
, xmlNS: 'http://www.w3.org/XML/1998/namespace'
|
|
, xmlnsNS: 'http://www.w3.org/2000/xmlns/'
|
|
, xlinkNS: 'http://www.w3.org/1999/xlink'
|
|
, evNS: 'http://www.w3.org/2001/xml-events'
|
|
|
|
/**
|
|
* Get svg dimensions: width and height
|
|
*
|
|
* @param {SVGSVGElement} svg
|
|
* @return {Object} {width: 0, height: 0}
|
|
*/
|
|
, getBoundingClientRectNormalized: function(svg) {
|
|
if (svg.clientWidth && svg.clientHeight) {
|
|
return {width: svg.clientWidth, height: svg.clientHeight}
|
|
} else if (!!svg.getBoundingClientRect()) {
|
|
return svg.getBoundingClientRect();
|
|
} else {
|
|
throw new Error('Cannot get BoundingClientRect for SVG.');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets g element with class of "viewport" or creates it if it doesn't exist
|
|
*
|
|
* @param {SVGSVGElement} svg
|
|
* @return {SVGElement} g (group) element
|
|
*/
|
|
, getOrCreateViewport: function(svg, selector) {
|
|
var viewport = null
|
|
|
|
if (Utils.isElement(selector)) {
|
|
viewport = selector
|
|
} else {
|
|
viewport = svg.querySelector(selector)
|
|
}
|
|
|
|
// Check if there is just one main group in SVG
|
|
if (!viewport) {
|
|
var childNodes = Array.prototype.slice.call(svg.childNodes || svg.children).filter(function(el){
|
|
return el.nodeName !== 'defs' && el.nodeName !== '#text'
|
|
})
|
|
|
|
// Node name should be SVGGElement and should have no transform attribute
|
|
// Groups with transform are not used as viewport because it involves parsing of all transform possibilities
|
|
if (childNodes.length === 1 && childNodes[0].nodeName === 'g' && childNodes[0].getAttribute('transform') === null) {
|
|
viewport = childNodes[0]
|
|
}
|
|
}
|
|
|
|
// If no favorable group element exists then create one
|
|
if (!viewport) {
|
|
var viewportId = 'viewport-' + new Date().toISOString().replace(/\D/g, '');
|
|
viewport = document.createElementNS(this.svgNS, 'g');
|
|
viewport.setAttribute('id', viewportId);
|
|
|
|
// Internet Explorer (all versions?) can't use childNodes, but other browsers prefer (require?) using childNodes
|
|
var svgChildren = svg.childNodes || svg.children;
|
|
if (!!svgChildren && svgChildren.length > 0) {
|
|
for (var i = svgChildren.length; i > 0; i--) {
|
|
// Move everything into viewport except defs
|
|
if (svgChildren[svgChildren.length - i].nodeName !== 'defs') {
|
|
viewport.appendChild(svgChildren[svgChildren.length - i]);
|
|
}
|
|
}
|
|
}
|
|
svg.appendChild(viewport);
|
|
}
|
|
|
|
// Parse class names
|
|
var classNames = [];
|
|
if (viewport.getAttribute('class')) {
|
|
classNames = viewport.getAttribute('class').split(' ')
|
|
}
|
|
|
|
// Set class (if not set already)
|
|
if (!~classNames.indexOf('svg-pan-zoom_viewport')) {
|
|
classNames.push('svg-pan-zoom_viewport')
|
|
viewport.setAttribute('class', classNames.join(' '))
|
|
}
|
|
|
|
return viewport
|
|
}
|
|
|
|
/**
|
|
* Set SVG attributes
|
|
*
|
|
* @param {SVGSVGElement} svg
|
|
*/
|
|
, setupSvgAttributes: function(svg) {
|
|
// Setting default attributes
|
|
svg.setAttribute('xmlns', this.svgNS);
|
|
svg.setAttributeNS(this.xmlnsNS, 'xmlns:xlink', this.xlinkNS);
|
|
svg.setAttributeNS(this.xmlnsNS, 'xmlns:ev', this.evNS);
|
|
|
|
// Needed for Internet Explorer, otherwise the viewport overflows
|
|
if (svg.parentNode !== null) {
|
|
var style = svg.getAttribute('style') || '';
|
|
if (style.toLowerCase().indexOf('overflow') === -1) {
|
|
svg.setAttribute('style', 'overflow: hidden; ' + style);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* How long Internet Explorer takes to finish updating its display (ms).
|
|
*/
|
|
, internetExplorerRedisplayInterval: 300
|
|
|
|
/**
|
|
* Forces the browser to redisplay all SVG elements that rely on an
|
|
* element defined in a 'defs' section. It works globally, for every
|
|
* available defs element on the page.
|
|
* The throttling is intentionally global.
|
|
*
|
|
* This is only needed for IE. It is as a hack to make markers (and 'use' elements?)
|
|
* visible after pan/zoom when there are multiple SVGs on the page.
|
|
* See bug report: https://connect.microsoft.com/IE/feedback/details/781964/
|
|
* also see svg-pan-zoom issue: https://github.com/ariutta/svg-pan-zoom/issues/62
|
|
*/
|
|
, refreshDefsGlobal: Utils.throttle(function() {
|
|
var allDefs = document.querySelectorAll('defs');
|
|
var allDefsCount = allDefs.length;
|
|
for (var i = 0; i < allDefsCount; i++) {
|
|
var thisDefs = allDefs[i];
|
|
thisDefs.parentNode.insertBefore(thisDefs, thisDefs);
|
|
}
|
|
}, this.internetExplorerRedisplayInterval)
|
|
|
|
/**
|
|
* Sets the current transform matrix of an element
|
|
*
|
|
* @param {SVGElement} element
|
|
* @param {SVGMatrix} matrix CTM
|
|
* @param {SVGElement} defs
|
|
*/
|
|
, setCTM: function(element, matrix, defs) {
|
|
var that = this
|
|
, s = 'matrix(' + matrix.a + ',' + matrix.b + ',' + matrix.c + ',' + matrix.d + ',' + matrix.e + ',' + matrix.f + ')';
|
|
|
|
element.setAttributeNS(null, 'transform', s);
|
|
if ('transform' in element.style) {
|
|
element.style.transform = s;
|
|
} else if ('-ms-transform' in element.style) {
|
|
element.style['-ms-transform'] = s;
|
|
} else if ('-webkit-transform' in element.style) {
|
|
element.style['-webkit-transform'] = s;
|
|
}
|
|
|
|
// IE has a bug that makes markers disappear on zoom (when the matrix "a" and/or "d" elements change)
|
|
// see http://stackoverflow.com/questions/17654578/svg-marker-does-not-work-in-ie9-10
|
|
// and http://srndolha.wordpress.com/2013/11/25/svg-line-markers-may-disappear-in-internet-explorer-11/
|
|
if (_browser === 'ie' && !!defs) {
|
|
// this refresh is intended for redisplaying the SVG during zooming
|
|
defs.parentNode.insertBefore(defs, defs);
|
|
// this refresh is intended for redisplaying the other SVGs on a page when panning a given SVG
|
|
// it is also needed for the given SVG itself, on zoomEnd, if the SVG contains any markers that
|
|
// are located under any other element(s).
|
|
window.setTimeout(function() {
|
|
that.refreshDefsGlobal();
|
|
}, that.internetExplorerRedisplayInterval);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Instantiate an SVGPoint object with given event coordinates
|
|
*
|
|
* @param {Event} evt
|
|
* @param {SVGSVGElement} svg
|
|
* @return {SVGPoint} point
|
|
*/
|
|
, getEventPoint: function(evt, svg) {
|
|
var point = svg.createSVGPoint()
|
|
|
|
Utils.mouseAndTouchNormalize(evt, svg)
|
|
|
|
point.x = evt.clientX
|
|
point.y = evt.clientY
|
|
|
|
return point
|
|
}
|
|
|
|
/**
|
|
* Get SVG center point
|
|
*
|
|
* @param {SVGSVGElement} svg
|
|
* @return {SVGPoint}
|
|
*/
|
|
, getSvgCenterPoint: function(svg, width, height) {
|
|
return this.createSVGPoint(svg, width / 2, height / 2)
|
|
}
|
|
|
|
/**
|
|
* Create a SVGPoint with given x and y
|
|
*
|
|
* @param {SVGSVGElement} svg
|
|
* @param {Number} x
|
|
* @param {Number} y
|
|
* @return {SVGPoint}
|
|
*/
|
|
, createSVGPoint: function(svg, x, y) {
|
|
var point = svg.createSVGPoint()
|
|
point.x = x
|
|
point.y = y
|
|
|
|
return point
|
|
}
|
|
}
|
|
|
|
},{"./utilities":7}],6:[function(require,module,exports){
|
|
// uniwheel 0.1.2 (customized)
|
|
// A unified cross browser mouse wheel event handler
|
|
// https://github.com/teemualap/uniwheel
|
|
|
|
module.exports = (function(){
|
|
|
|
//Full details: https://developer.mozilla.org/en-US/docs/Web/Reference/Events/wheel
|
|
|
|
var prefix = "", _addEventListener, _removeEventListener, onwheel, support, fns = [];
|
|
|
|
// detect event model
|
|
if ( window.addEventListener ) {
|
|
_addEventListener = "addEventListener";
|
|
_removeEventListener = "removeEventListener";
|
|
} else {
|
|
_addEventListener = "attachEvent";
|
|
_removeEventListener = "detachEvent";
|
|
prefix = "on";
|
|
}
|
|
|
|
// detect available wheel event
|
|
support = "onwheel" in document.createElement("div") ? "wheel" : // Modern browsers support "wheel"
|
|
document.onmousewheel !== undefined ? "mousewheel" : // Webkit and IE support at least "mousewheel"
|
|
"DOMMouseScroll"; // let's assume that remaining browsers are older Firefox
|
|
|
|
|
|
function createCallback(element,callback,capture) {
|
|
|
|
var fn = function(originalEvent) {
|
|
|
|
!originalEvent && ( originalEvent = window.event );
|
|
|
|
// create a normalized event object
|
|
var event = {
|
|
// keep a ref to the original event object
|
|
originalEvent: originalEvent,
|
|
target: originalEvent.target || originalEvent.srcElement,
|
|
type: "wheel",
|
|
deltaMode: originalEvent.type == "MozMousePixelScroll" ? 0 : 1,
|
|
deltaX: 0,
|
|
delatZ: 0,
|
|
preventDefault: function() {
|
|
originalEvent.preventDefault ?
|
|
originalEvent.preventDefault() :
|
|
originalEvent.returnValue = false;
|
|
}
|
|
};
|
|
|
|
// calculate deltaY (and deltaX) according to the event
|
|
if ( support == "mousewheel" ) {
|
|
event.deltaY = - 1/40 * originalEvent.wheelDelta;
|
|
// Webkit also support wheelDeltaX
|
|
originalEvent.wheelDeltaX && ( event.deltaX = - 1/40 * originalEvent.wheelDeltaX );
|
|
} else {
|
|
event.deltaY = originalEvent.detail;
|
|
}
|
|
|
|
// it's time to fire the callback
|
|
return callback( event );
|
|
|
|
};
|
|
|
|
fns.push({
|
|
element: element,
|
|
fn: fn,
|
|
capture: capture
|
|
});
|
|
|
|
return fn;
|
|
}
|
|
|
|
function getCallback(element,capture) {
|
|
for (var i = 0; i < fns.length; i++) {
|
|
if (fns[i].element === element && fns[i].capture === capture) {
|
|
return fns[i].fn;
|
|
}
|
|
}
|
|
return function(){};
|
|
}
|
|
|
|
function removeCallback(element,capture) {
|
|
for (var i = 0; i < fns.length; i++) {
|
|
if (fns[i].element === element && fns[i].capture === capture) {
|
|
return fns.splice(i,1);
|
|
}
|
|
}
|
|
}
|
|
|
|
function _addWheelListener( elem, eventName, callback, useCapture ) {
|
|
|
|
var cb;
|
|
|
|
if (support === "wheel") {
|
|
cb = callback;
|
|
} else {
|
|
cb = createCallback(elem,callback,useCapture);
|
|
}
|
|
|
|
elem[ _addEventListener ]( prefix + eventName, cb, useCapture || false );
|
|
|
|
}
|
|
|
|
function _removeWheelListener( elem, eventName, callback, useCapture ) {
|
|
|
|
var cb;
|
|
|
|
if (support === "wheel") {
|
|
cb = callback;
|
|
} else {
|
|
cb = getCallback(elem,useCapture);
|
|
}
|
|
|
|
elem[ _removeEventListener ]( prefix + eventName, cb, useCapture || false );
|
|
|
|
removeCallback(elem,useCapture);
|
|
|
|
}
|
|
|
|
function addWheelListener( elem, callback, useCapture ) {
|
|
_addWheelListener( elem, support, callback, useCapture );
|
|
|
|
// handle MozMousePixelScroll in older Firefox
|
|
if( support == "DOMMouseScroll" ) {
|
|
_addWheelListener( elem, "MozMousePixelScroll", callback, useCapture);
|
|
}
|
|
}
|
|
|
|
function removeWheelListener(elem,callback,useCapture){
|
|
_removeWheelListener(elem,support,callback,useCapture);
|
|
|
|
// handle MozMousePixelScroll in older Firefox
|
|
if( support == "DOMMouseScroll" ) {
|
|
_removeWheelListener(elem, "MozMousePixelScroll", callback, useCapture);
|
|
}
|
|
}
|
|
|
|
return {
|
|
on: addWheelListener,
|
|
off: removeWheelListener
|
|
};
|
|
|
|
})();
|
|
|
|
},{}],7:[function(require,module,exports){
|
|
module.exports = {
|
|
/**
|
|
* Extends an object
|
|
*
|
|
* @param {Object} target object to extend
|
|
* @param {Object} source object to take properties from
|
|
* @return {Object} extended object
|
|
*/
|
|
extend: function(target, source) {
|
|
target = target || {};
|
|
for (var prop in source) {
|
|
// Go recursively
|
|
if (this.isObject(source[prop])) {
|
|
target[prop] = this.extend(target[prop], source[prop])
|
|
} else {
|
|
target[prop] = source[prop]
|
|
}
|
|
}
|
|
return target;
|
|
}
|
|
|
|
/**
|
|
* Checks if an object is a DOM element
|
|
*
|
|
* @param {Object} o HTML element or String
|
|
* @return {Boolean} returns true if object is a DOM element
|
|
*/
|
|
, isElement: function(o){
|
|
return (
|
|
o instanceof HTMLElement || o instanceof SVGElement || o instanceof SVGSVGElement || //DOM2
|
|
(o && typeof o === 'object' && o !== null && o.nodeType === 1 && typeof o.nodeName === 'string')
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Checks if an object is an Object
|
|
*
|
|
* @param {Object} o Object
|
|
* @return {Boolean} returns true if object is an Object
|
|
*/
|
|
, isObject: function(o){
|
|
return Object.prototype.toString.call(o) === '[object Object]';
|
|
}
|
|
|
|
/**
|
|
* Checks if variable is Number
|
|
*
|
|
* @param {Integer|Float} n
|
|
* @return {Boolean} returns true if variable is Number
|
|
*/
|
|
, isNumber: function(n) {
|
|
return !isNaN(parseFloat(n)) && isFinite(n);
|
|
}
|
|
|
|
/**
|
|
* Search for an SVG element
|
|
*
|
|
* @param {Object|String} elementOrSelector DOM Element or selector String
|
|
* @return {Object|Null} SVG or null
|
|
*/
|
|
, getSvg: function(elementOrSelector) {
|
|
var element
|
|
, svg;
|
|
|
|
if (!this.isElement(elementOrSelector)) {
|
|
// If selector provided
|
|
if (typeof elementOrSelector === 'string' || elementOrSelector instanceof String) {
|
|
// Try to find the element
|
|
element = document.querySelector(elementOrSelector)
|
|
|
|
if (!element) {
|
|
throw new Error('Provided selector did not find any elements. Selector: ' + elementOrSelector)
|
|
return null
|
|
}
|
|
} else {
|
|
throw new Error('Provided selector is not an HTML object nor String')
|
|
return null
|
|
}
|
|
} else {
|
|
element = elementOrSelector
|
|
}
|
|
|
|
if (element.tagName.toLowerCase() === 'svg') {
|
|
svg = element;
|
|
} else {
|
|
if (element.tagName.toLowerCase() === 'object') {
|
|
svg = element.contentDocument.documentElement;
|
|
} else {
|
|
if (element.tagName.toLowerCase() === 'embed') {
|
|
svg = element.getSVGDocument().documentElement;
|
|
} else {
|
|
if (element.tagName.toLowerCase() === 'img') {
|
|
throw new Error('Cannot script an SVG in an "img" element. Please use an "object" element or an in-line SVG.');
|
|
} else {
|
|
throw new Error('Cannot get SVG.');
|
|
}
|
|
return null
|
|
}
|
|
}
|
|
}
|
|
|
|
return svg
|
|
}
|
|
|
|
/**
|
|
* Attach a given context to a function
|
|
* @param {Function} fn Function
|
|
* @param {Object} context Context
|
|
* @return {Function} Function with certain context
|
|
*/
|
|
, proxy: function(fn, context) {
|
|
return function() {
|
|
return fn.apply(context, arguments)
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns object type
|
|
* Uses toString that returns [object SVGPoint]
|
|
* And than parses object type from string
|
|
*
|
|
* @param {Object} o Any object
|
|
* @return {String} Object type
|
|
*/
|
|
, getType: function(o) {
|
|
return Object.prototype.toString.apply(o).replace(/^\[object\s/, '').replace(/\]$/, '')
|
|
}
|
|
|
|
/**
|
|
* If it is a touch event than add clientX and clientY to event object
|
|
*
|
|
* @param {Event} evt
|
|
* @param {SVGSVGElement} svg
|
|
*/
|
|
, mouseAndTouchNormalize: function(evt, svg) {
|
|
// If no cilentX and but touch objects are available
|
|
if (evt.clientX === void 0 || evt.clientX === null) {
|
|
// Fallback
|
|
evt.clientX = 0
|
|
evt.clientY = 0
|
|
|
|
// If it is a touch event
|
|
if (evt.changedTouches !== void 0 && evt.changedTouches.length) {
|
|
// If touch event has changedTouches
|
|
if (evt.changedTouches[0].clientX !== void 0) {
|
|
evt.clientX = evt.changedTouches[0].clientX
|
|
evt.clientY = evt.changedTouches[0].clientY
|
|
}
|
|
// If changedTouches has pageX attribute
|
|
else if (evt.changedTouches[0].pageX !== void 0) {
|
|
var rect = svg.getBoundingClientRect();
|
|
|
|
evt.clientX = evt.changedTouches[0].pageX - rect.left
|
|
evt.clientY = evt.changedTouches[0].pageY - rect.top
|
|
}
|
|
// If it is a custom event
|
|
} else if (evt.originalEvent !== void 0) {
|
|
if (evt.originalEvent.clientX !== void 0) {
|
|
evt.clientX = evt.originalEvent.clientX
|
|
evt.clientY = evt.originalEvent.clientY
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if an event is a double click/tap
|
|
* TODO: For touch gestures use a library (hammer.js) that takes in account other events
|
|
* (touchmove and touchend). It should take in account tap duration and traveled distance
|
|
*
|
|
* @param {Event} evt
|
|
* @param {Event} prevEvt Previous Event
|
|
* @return {Boolean}
|
|
*/
|
|
, isDblClick: function(evt, prevEvt) {
|
|
// Double click detected by browser
|
|
if (evt.detail === 2) {
|
|
return true;
|
|
}
|
|
// Try to compare events
|
|
else if (prevEvt !== void 0 && prevEvt !== null) {
|
|
var timeStampDiff = evt.timeStamp - prevEvt.timeStamp // should be lower than 250 ms
|
|
, touchesDistance = Math.sqrt(Math.pow(evt.clientX - prevEvt.clientX, 2) + Math.pow(evt.clientY - prevEvt.clientY, 2))
|
|
|
|
return timeStampDiff < 250 && touchesDistance < 10
|
|
}
|
|
|
|
// Nothing found
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns current timestamp as an integer
|
|
*
|
|
* @return {Number}
|
|
*/
|
|
, now: Date.now || function() {
|
|
return new Date().getTime();
|
|
}
|
|
|
|
// From underscore.
|
|
// Returns a function, that, when invoked, will only be triggered at most once
|
|
// during a given window of time. Normally, the throttled function will run
|
|
// as much as it can, without ever going more than once per `wait` duration;
|
|
// but if you'd like to disable the execution on the leading edge, pass
|
|
// `{leading: false}`. To disable execution on the trailing edge, ditto.
|
|
// jscs:disable
|
|
// jshint ignore:start
|
|
, throttle: function(func, wait, options) {
|
|
var that = this;
|
|
var context, args, result;
|
|
var timeout = null;
|
|
var previous = 0;
|
|
if (!options) options = {};
|
|
var later = function() {
|
|
previous = options.leading === false ? 0 : that.now();
|
|
timeout = null;
|
|
result = func.apply(context, args);
|
|
if (!timeout) context = args = null;
|
|
};
|
|
return function() {
|
|
var now = that.now();
|
|
if (!previous && options.leading === false) previous = now;
|
|
var remaining = wait - (now - previous);
|
|
context = this;
|
|
args = arguments;
|
|
if (remaining <= 0 || remaining > wait) {
|
|
clearTimeout(timeout);
|
|
timeout = null;
|
|
previous = now;
|
|
result = func.apply(context, args);
|
|
if (!timeout) context = args = null;
|
|
} else if (!timeout && options.trailing !== false) {
|
|
timeout = setTimeout(later, remaining);
|
|
}
|
|
return result;
|
|
};
|
|
}
|
|
// jshint ignore:end
|
|
// jscs:enable
|
|
|
|
/**
|
|
* Create a requestAnimationFrame simulation
|
|
*
|
|
* @param {Number|String} refreshRate
|
|
* @return {Function}
|
|
*/
|
|
, createRequestAnimationFrame: function(refreshRate) {
|
|
var timeout = null
|
|
|
|
// Convert refreshRate to timeout
|
|
if (refreshRate !== 'auto' && refreshRate < 60 && refreshRate > 1) {
|
|
timeout = Math.floor(1000 / refreshRate)
|
|
}
|
|
|
|
if (timeout === null) {
|
|
return window.requestAnimationFrame || requestTimeout(33)
|
|
} else {
|
|
return requestTimeout(timeout)
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create a callback that will execute after a given timeout
|
|
*
|
|
* @param {Function} timeout
|
|
* @return {Function}
|
|
*/
|
|
function requestTimeout(timeout) {
|
|
return function(callback) {
|
|
window.setTimeout(callback, timeout)
|
|
}
|
|
}
|
|
|
|
},{}]},{},[1]);
|