svg-pan-zoom-m
Version:
JavaScript library for panning and zooming an SVG image from the mouse, touches and programmatically.
2,251 lines • 65.9 kB
JavaScript
// svg-pan-zoom v3.6.1
// https://github.com/ariutta/svg-pan-zoom
(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
var SvgUtils = require("./svg-utilities");
module.exports = {
enable: function(instance) {
// Select (and create if necessary) defs
var defs = instance.svg.querySelector("defs");
if (!defs) {
defs = document.createElementNS(SvgUtils.svgNS, "defs");
instance.svg.appendChild(defs);
}
// Check for style element, and create it if it doesn't exist
var styleEl = defs.querySelector("style#svg-pan-zoom-controls-styles");
if (!styleEl) {
var style = document.createElementNS(SvgUtils.svgNS, "style");
style.setAttribute("id", "svg-pan-zoom-controls-styles");
style.setAttribute("type", "text/css");
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; }";
defs.appendChild(style);
}
// Zoom Group
var zoomGroup = document.createElementNS(SvgUtils.svgNS, "g");
zoomGroup.setAttribute("id", "svg-pan-zoom-controls");
zoomGroup.setAttribute(
"transform",
"translate(" +
(instance.width - 70) +
" " +
(instance.height - 76) +
") scale(0.75)"
);
zoomGroup.setAttribute("class", "svg-pan-zoom-control");
// Control elements
zoomGroup.appendChild(this._createZoomIn(instance));
zoomGroup.appendChild(this._createZoomReset(instance));
zoomGroup.appendChild(this._createZoomOut(instance));
// Finally append created element
instance.svg.appendChild(zoomGroup);
// Cache control instance
instance.controlIcons = zoomGroup;
},
_createZoomIn: function(instance) {
var zoomIn = document.createElementNS(SvgUtils.svgNS, "g");
zoomIn.setAttribute("id", "svg-pan-zoom-zoom-in");
zoomIn.setAttribute("transform", "translate(30.5 5) scale(0.015)");
zoomIn.setAttribute("class", "svg-pan-zoom-control");
zoomIn.addEventListener(
"click",
function() {
instance.getPublicInstance().zoomIn();
},
false
);
zoomIn.addEventListener(
"touchstart",
function() {
instance.getPublicInstance().zoomIn();
},
false
);
var zoomInBackground = document.createElementNS(SvgUtils.svgNS, "rect"); // TODO change these background space fillers to rounded rectangles so they look prettier
zoomInBackground.setAttribute("x", "0");
zoomInBackground.setAttribute("y", "0");
zoomInBackground.setAttribute("width", "1500"); // larger than expected because the whole group is transformed to scale down
zoomInBackground.setAttribute("height", "1400");
zoomInBackground.setAttribute("class", "svg-pan-zoom-control-background");
zoomIn.appendChild(zoomInBackground);
var zoomInShape = document.createElementNS(SvgUtils.svgNS, "path");
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"
);
zoomInShape.setAttribute("class", "svg-pan-zoom-control-element");
zoomIn.appendChild(zoomInShape);
return zoomIn;
},
_createZoomReset: function(instance) {
// reset
var resetPanZoomControl = document.createElementNS(SvgUtils.svgNS, "g");
resetPanZoomControl.setAttribute("id", "svg-pan-zoom-reset-pan-zoom");
resetPanZoomControl.setAttribute("transform", "translate(5 35) scale(0.4)");
resetPanZoomControl.setAttribute("class", "svg-pan-zoom-control");
resetPanZoomControl.addEventListener(
"click",
function() {
instance.getPublicInstance().reset();
},
false
);
resetPanZoomControl.addEventListener(
"touchstart",
function() {
instance.getPublicInstance().reset();
},
false
);
var resetPanZoomControlBackground = document.createElementNS(
SvgUtils.svgNS,
"rect"
); // TODO change these background space fillers to rounded rectangles so they look prettier
resetPanZoomControlBackground.setAttribute("x", "2");
resetPanZoomControlBackground.setAttribute("y", "2");
resetPanZoomControlBackground.setAttribute("width", "182"); // larger than expected because the whole group is transformed to scale down
resetPanZoomControlBackground.setAttribute("height", "58");
resetPanZoomControlBackground.setAttribute(
"class",
"svg-pan-zoom-control-background"
);
resetPanZoomControl.appendChild(resetPanZoomControlBackground);
var resetPanZoomControlShape1 = document.createElementNS(
SvgUtils.svgNS,
"path"
);
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"
);
resetPanZoomControlShape1.setAttribute(
"class",
"svg-pan-zoom-control-element"
);
resetPanZoomControl.appendChild(resetPanZoomControlShape1);
var resetPanZoomControlShape2 = document.createElementNS(
SvgUtils.svgNS,
"path"
);
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"
);
resetPanZoomControlShape2.setAttribute(
"class",
"svg-pan-zoom-control-element"
);
resetPanZoomControl.appendChild(resetPanZoomControlShape2);
return resetPanZoomControl;
},
_createZoomOut: function(instance) {
// zoom out
var zoomOut = document.createElementNS(SvgUtils.svgNS, "g");
zoomOut.setAttribute("id", "svg-pan-zoom-zoom-out");
zoomOut.setAttribute("transform", "translate(30.5 70) scale(0.015)");
zoomOut.setAttribute("class", "svg-pan-zoom-control");
zoomOut.addEventListener(
"click",
function() {
instance.getPublicInstance().zoomOut();
},
false
);
zoomOut.addEventListener(
"touchstart",
function() {
instance.getPublicInstance().zoomOut();
},
false
);
var zoomOutBackground = document.createElementNS(SvgUtils.svgNS, "rect"); // TODO change these background space fillers to rounded rectangles so they look prettier
zoomOutBackground.setAttribute("x", "0");
zoomOutBackground.setAttribute("y", "0");
zoomOutBackground.setAttribute("width", "1500"); // larger than expected because the whole group is transformed to scale down
zoomOutBackground.setAttribute("height", "1400");
zoomOutBackground.setAttribute("class", "svg-pan-zoom-control-background");
zoomOut.appendChild(zoomOutBackground);
var zoomOutShape = document.createElementNS(SvgUtils.svgNS, "path");
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"
);
zoomOutShape.setAttribute("class", "svg-pan-zoom-control-element");
zoomOut.appendChild(zoomOutShape);
return zoomOut;
},
disable: function(instance) {
if (instance.controlIcons) {
instance.controlIcons.parentNode.removeChild(instance.controlIcons);
instance.controlIcons = null;
}
}
};
},{"./svg-utilities":5}],2:[function(require,module,exports){
var SvgUtils = require("./svg-utilities"),
Utils = require("./utilities");
var ShadowViewport = function(viewport, options) {
this.init(viewport, options);
};
/**
* Initialization
*
* @param {SVGElement} viewport
* @param {Object} options
*/
ShadowViewport.prototype.init = function(viewport, options) {
// DOM Elements
this.viewport = viewport;
this.options = options;
// State cache
this.originalState = { zoom: 1, x: 0, y: 0 };
this.activeState = { zoom: 1, x: 0, y: 0 };
this.updateCTMCached = Utils.proxy(this.updateCTM, this);
// Create a custom requestAnimationFrame taking in account refreshRate
this.requestAnimationFrame = Utils.createRequestAnimationFrame(
this.options.refreshRate
);
// ViewBox
this.viewBox = { x: 0, y: 0, width: 0, height: 0 };
this.cacheViewBox();
// Process CTM
var newCTM = this.processCTM();
// Update viewport CTM and cache zoom and pan
this.setCTM(newCTM);
// Update CTM in this frame
this.updateCTM();
};
/**
* Cache initial viewBox value
* If no viewBox is defined, then use viewport size/position instead for viewBox values
*/
ShadowViewport.prototype.cacheViewBox = function() {
var svgViewBox = this.options.svg.getAttribute("viewBox");
if (svgViewBox) {
var viewBoxValues = svgViewBox
.split(/[\s\,]/)
.filter(function(v) {
return v;
})
.map(parseFloat);
// Cache viewbox x and y offset
this.viewBox.x = viewBoxValues[0];
this.viewBox.y = viewBoxValues[1];
this.viewBox.width = viewBoxValues[2];
this.viewBox.height = viewBoxValues[3];
var zoom = Math.min(
this.options.width / this.viewBox.width,
this.options.height / this.viewBox.height
);
// Update active state
this.activeState.zoom = zoom;
this.activeState.x = (this.options.width - this.viewBox.width * zoom) / 2;
this.activeState.y = (this.options.height - this.viewBox.height * zoom) / 2;
// Force updating CTM
this.updateCTMOnNextFrame();
this.options.svg.removeAttribute("viewBox");
} else {
this.simpleViewBoxCache();
}
};
/**
* Recalculate viewport sizes and update viewBox cache
*/
ShadowViewport.prototype.simpleViewBoxCache = function() {
var bBox = this.viewport.getBBox();
this.viewBox.x = bBox.x;
this.viewBox.y = bBox.y;
this.viewBox.width = bBox.width;
this.viewBox.height = bBox.height;
};
/**
* Returns a viewbox object. Safe to alter
*
* @return {Object} viewbox object
*/
ShadowViewport.prototype.getViewBox = function() {
return Utils.extend({}, this.viewBox);
};
/**
* Get initial zoom and pan values. Save them into originalState
* Parses viewBox attribute to alter initial sizes
*
* @return {CTM} CTM object based on options
*/
ShadowViewport.prototype.processCTM = function() {
var newCTM = this.getCTM();
if (this.options.fit || this.options.contain) {
var newScale;
if (this.options.fit) {
newScale = Math.min(
this.options.width / this.viewBox.width,
this.options.height / this.viewBox.height
);
} else {
newScale = Math.max(
this.options.width / this.viewBox.width,
this.options.height / this.viewBox.height
);
}
newCTM.a = newScale; //x-scale
newCTM.d = newScale; //y-scale
newCTM.e = -this.viewBox.x * newScale; //x-transform
newCTM.f = -this.viewBox.y * newScale; //y-transform
}
if (this.options.center) {
var offsetX =
(this.options.width -
(this.viewBox.width + this.viewBox.x * 2) * newCTM.a) *
0.5,
offsetY =
(this.options.height -
(this.viewBox.height + this.viewBox.y * 2) * newCTM.a) *
0.5;
newCTM.e = offsetX;
newCTM.f = offsetY;
}
// Cache initial values. Based on activeState and fix+center opitons
this.originalState.zoom = newCTM.a;
this.originalState.x = newCTM.e;
this.originalState.y = newCTM.f;
return newCTM;
};
/**
* Return originalState object. Safe to alter
*
* @return {Object}
*/
ShadowViewport.prototype.getOriginalState = function() {
return Utils.extend({}, this.originalState);
};
/**
* Return actualState object. Safe to alter
*
* @return {Object}
*/
ShadowViewport.prototype.getState = function() {
return Utils.extend({}, this.activeState);
};
/**
* Get zoom scale
*
* @return {Float} zoom scale
*/
ShadowViewport.prototype.getZoom = function() {
return this.activeState.zoom;
};
/**
* Get zoom scale for pubilc usage
*
* @return {Float} zoom scale
*/
ShadowViewport.prototype.getRelativeZoom = function() {
return this.activeState.zoom / this.originalState.zoom;
};
/**
* Compute zoom scale for pubilc usage
*
* @return {Float} zoom scale
*/
ShadowViewport.prototype.computeRelativeZoom = function(scale) {
return scale / this.originalState.zoom;
};
/**
* Get pan
*
* @return {Object}
*/
ShadowViewport.prototype.getPan = function() {
return { x: this.activeState.x, y: this.activeState.y };
};
/**
* Return cached viewport CTM value that can be safely modified
*
* @return {SVGMatrix}
*/
ShadowViewport.prototype.getCTM = function() {
var safeCTM = this.options.svg.createSVGMatrix();
// Copy values manually as in FF they are not itterable
safeCTM.a = this.activeState.zoom;
safeCTM.b = 0;
safeCTM.c = 0;
safeCTM.d = this.activeState.zoom;
safeCTM.e = this.activeState.x;
safeCTM.f = this.activeState.y;
return safeCTM;
};
/**
* Set a new CTM
*
* @param {SVGMatrix} newCTM
*/
ShadowViewport.prototype.setCTM = function(newCTM) {
var willZoom = this.isZoomDifferent(newCTM),
willPan = this.isPanDifferent(newCTM);
if (willZoom || willPan) {
// Before zoom
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}],3:[function(require,module,exports){
var svgPanZoom = require("./svg-pan-zoom.js");
// UMD module definition
(function(window, document) {
// AMD
if (typeof define === "function" && define.amd) {
define("svg-pan-zoom", function() {
return svgPanZoom;
});
// CMD
} else if (typeof module !== "undefined" && module.exports) {
module.exports = svgPanZoom;
// Browser
// Keep exporting globally as module.exports is available because of browserify
window.svgPanZoom = svgPanZoom;
}
})(window, document);
},{"./svg-pan-zoom.js":4}],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,
onlyMouseWheel: false // jusitfy if use `wheel` or `mousewheel` event
};
var passiveListenerOption = { passive: true };
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
// eslint-disable-next-line eqeqeq
if (this.options.customEventsHandler != null) {
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],
!this.options.preventMouseEventsDefault ? passiveListenerOption : 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
var isPassiveListener = !this.options.preventMouseEventsDefault;
Wheel.on(
this.options.eventsListenerElement || this.svg,
this.wheelListener,
isPassiveListener
);
this.options.mouseWheelZoomEnabled = true;
}
};
/**
* Disable ability to zoom using mouse wheel
*/
SvgPanZoom.prototype.disableMouseWheelZoom = function() {
if (this.options.mouseWheelZoomEnabled) {
var isPassiveListener = !this.options.preventMouseEventsDefault;
Wheel.off(
this.options.eventsListenerElement || this.svg,
this.wheelListener,
isPassiveListener
);
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;
}
}
if (this.options.onlyMouseWheel && !evt.ctrlKey) {
return;
}
// 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
// eslint-disable-next-line eqeqeq
if (this.options.customEventsHandler != null) {
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],
!this.options.preventMouseEventsDefault ? passiveListenerOption : 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":1,"./shadow-viewport":2,"./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 ? this.internetExplorerRedisplayInterval : null
),
/**
* Sets the current transform matrix of an element
*
* @param {SVGElement} element
* @param {SVGMatrix} matrix CTM
* @param {SVGElement} defs
*/
setCTM: function(element, matrix, defs) {
if (Number.isNaN(matrix.a) || typeof matrix.a !== "number") {
return;
}
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, support, fns = [];
var passiveOption = {passive: true};
// 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) {
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,
});
return fn;
}
function getCallback(element) {
for (var i = 0; i < fns.length; i++) {
if (fns[i].element === element) {
return fns[i].fn;
}
}
return function(){};
}
function removeCallback(element) {
for (var i = 0; i < fns.length; i++) {
if (fns[i].element === element) {
return fns.splice(i,1);
}
}
}
function _addWheelListener(elem, eventName, callback, isPassiveListener, onlyMouseWhell ) {
var cb;
if (support === "wheel" && !onlyMouseWhell) {
cb = callback;
} else {
cb = createCallback(elem, callback);
}
elem[_addEventListener](prefix + eventName, cb, isPassiveListener ? passiveOption : false);
}
function _removeWheelListener(elem, eventName, callback, isPassiveListener ) {
var cb;
if (support === "wheel") {
cb = callback;
} else {
cb = getCallback(elem);
}
elem[_removeEventListener](prefix + eventName, cb, isPassiveListener ? passiveOption : false);
removeCallback(elem);
}
function addWheelListener( elem, callback, isPassiveListener, onlyMouseWhell ) {
_addWheelListener(elem, support, callback, isPassiveListener, onlyMouseWhell );
// handle MozMousePixelScroll in older Firefox
if( support == "DOMMouseScroll" ) {
_addWheelListener(elem, "MozMousePixelScroll", callback, isPassiveListener );
}
}
function removeWheelListener(elem, callback, isPassiveListener){
_removeWheelListener(elem, support, callback, isPassiveListener);
// handle MozMousePixelScroll in older Firefox
if( support == "DOMMouseScroll" ) {
_removeWheelListener(elem, "MozMousePixelScroll", callback, isPassiveListener);
}
}
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 clientX then fallback
if (evt.clientX === void 0 || evt.clientX === null) {
// Fallback
evt.clientX = 0;
evt.clientY = 0;
// If it is a touch event
if (evt.touches !== void 0 && evt.touches.length) {
if (evt.touches[0].clientX !== void 0) {
evt.clientX = evt.touches[0].clientX;
evt.clientY = evt.touches[0].clientY;
} else if (evt.touches[0].pageX !== void 0) {
var rect = svg.getBoundingClientRect();
evt.clientX = evt.touches[0].pageX - rect.left;
evt.clientY = evt.touches[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.
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; // eslint-disable-line consistent-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;
};
},
/**
* 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);
};
}
},{}]},{},[3]);