diff --git a/dist/panzoom.js b/dist/panzoom.js index 8c701cb..817208f 100644 --- a/dist/panzoom.js +++ b/dist/panzoom.js @@ -1,1170 +1,1213 @@ (function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.panzoom = f()}})(function(){var define,module,exports;return (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 0) { - transform.x += diff - adjusted = true - } - // check the other side: - diff = boundingBox.right - clientRect.left - if (diff < 0) { - transform.x += diff - adjusted = true - } - - // y axis: - diff = boundingBox.top - clientRect.bottom - if (diff > 0) { - // we adjust transform, so that it matches exactly our bounding box: - // transform.y = boundingBox.top - (boundingBox.height + boundingBox.y) * transform.scale => - // transform.y = boundingBox.top - (clientRect.bottom - transform.y) => - // transform.y = diff + transform.y => - transform.y += diff - adjusted = true - } - - diff = boundingBox.bottom - clientRect.top - if (diff < 0) { - transform.y += diff - adjusted = true - } - return adjusted - } - - /** - * Returns bounding box that should be used to restrict scene movement. - */ - function getBoundingBox() { - if (!bounds) return // client does not want to restrict movement - - if (typeof bounds === 'boolean') { - // for boolean type we use parent container bounds - var ownerRect = owner.getBoundingClientRect() - var sceneWidth = ownerRect.width - var sceneHeight = ownerRect.height - - return { - left: sceneWidth * boundsPadding, - top: sceneHeight * boundsPadding, - right: sceneWidth * (1 - boundsPadding), - bottom: sceneHeight * (1 - boundsPadding), - } - } - - return bounds - } - - function getClientRect() { - var bbox = panController.getBBox() - var leftTop = client(bbox.left, bbox.top) - - return { - left: leftTop.x, - top: leftTop.y, - right: bbox.width * transform.scale + leftTop.x, - bottom: bbox.height * transform.scale + leftTop.y - } - } - - function client(x, y) { - return { - x: (x * transform.scale) + transform.x, - y: (y * transform.scale) + transform.y - } - } - - function makeDirty() { - isDirty = true - frameAnimation = window.requestAnimationFrame(frame) - } - - function zoomByRatio(clientX, clientY, ratio) { - if (isNaN(clientX) || isNaN(clientY) || isNaN(ratio)) { - throw new Error('zoom requires valid numbers') - } - - var newScale = transform.scale * ratio - - if (newScale < minZoom) { - if (transform.scale === minZoom) return; - - ratio = minZoom / transform.scale - } - if (newScale > maxZoom) { - if (transform.scale === maxZoom) return; - - ratio = maxZoom / transform.scale - } - - var size = transformToScreen(clientX, clientY) - - transform.x = size.x - ratio * (size.x - transform.x) - transform.y = size.y - ratio * (size.y - transform.y) - - var transformAdjusted = keepTransformInsideBounds() - if (!transformAdjusted) transform.scale *= ratio - - triggerEvent('zoom') - - makeDirty() - } - - function zoomAbs(clientX, clientY, zoomLevel) { - var ratio = zoomLevel / transform.scale - zoomByRatio(clientX, clientY, ratio) - } - - function centerOn(ui) { - var parent = ui.ownerSVGElement - if (!parent) throw new Error('ui element is required to be within the scene') - - // TODO: should i use controller's screen CTM? - var clientRect = ui.getBoundingClientRect() - var cx = clientRect.left + clientRect.width/2 - var cy = clientRect.top + clientRect.height/2 - - var container = parent.getBoundingClientRect() - var dx = container.width/2 - cx - var dy = container.height/2 - cy - - internalMoveBy(dx, dy, true) - } - - function internalMoveBy(dx, dy, smooth) { - if (!smooth) { - return moveBy(dx, dy) - } - - if (moveByAnimation) moveByAnimation.cancel() - - var from = { x: 0, y: 0 } - var to = { x: dx, y : dy } - var lastX = 0 - var lastY = 0 - - moveByAnimation = animate(from, to, { - step: function(v) { - moveBy(v.x - lastX, v.y - lastY) - - lastX = v.x - lastY = v.y - } - }) - } - - function scroll(x, y) { - cancelZoomAnimation() - moveTo(x, y) - } - - function dispose() { - releaseEvents(); - } - - function listenForEvents() { - owner.addEventListener('mousedown', onMouseDown) - owner.addEventListener('dblclick', onDoubleClick) - owner.addEventListener('touchstart', onTouch) - owner.addEventListener('keydown', onKeyDown) - - // Need to listen on the owner container, so that we are not limited - // by the size of the scrollable domElement - wheel.addWheelListener(owner, onMouseWheel) - - makeDirty() - } - - function releaseEvents() { - wheel.removeWheelListener(owner, onMouseWheel) - owner.removeEventListener('mousedown', onMouseDown) - owner.removeEventListener('keydown', onKeyDown) - owner.removeEventListener('dblclick', onDoubleClick) - owner.removeEventListener('touchstart', onTouch) - - if (frameAnimation) { - window.cancelAnimationFrame(frameAnimation) - frameAnimation = 0 - } - - smoothScroll.cancel() - - releaseDocumentMouse() - releaseTouches() - - triggerPanEnd() - } - - - function frame() { - if (isDirty) applyTransform() - } - - function applyTransform() { - isDirty = false - - // TODO: Should I allow to cancel this? - panController.applyTransform(transform) - - triggerEvent('transform') - frameAnimation = 0 - } - - function onKeyDown(e) { - var x = 0, y = 0, z = 0 - if (e.keyCode === 38) { - y = 1 // up - } else if (e.keyCode === 40) { - y = -1 // down - } else if (e.keyCode === 37) { - x = 1 // left - } else if (e.keyCode === 39) { - x = -1 // right - } else if (e.keyCode === 189 || e.keyCode === 109) { // DASH or SUBTRACT - z = 1 // `-` - zoom out - } else if (e.keyCode === 187 || e.keyCode === 107) { // EQUAL SIGN or ADD - z = -1 // `=` - zoom in (equal sign on US layout is under `+`) - } - - if (filterKey(e, x, y, z)) { - // They don't want us to handle the key: https://github.com/anvaka/panzoom/issues/45 - return; - } - - if (x || y) { - e.preventDefault() - e.stopPropagation() - - var clientRect = owner.getBoundingClientRect() - // movement speed should be the same in both X and Y direction: - var offset = Math.min(clientRect.width, clientRect.height) - var moveSpeedRatio = 0.05 - var dx = offset * moveSpeedRatio * x - var dy = offset * moveSpeedRatio * y - - // TODO: currently we do not animate this. It could be better to have animation - internalMoveBy(dx, dy) - } - - if (z) { - var scaleMultiplier = getScaleMultiplier(z) - var ownerRect = owner.getBoundingClientRect() - publicZoomTo(ownerRect.width/2, ownerRect.height/2, scaleMultiplier) - } - } - - function onTouch(e) { - // let the override the touch behavior - beforeTouch(e); - - if (e.touches.length === 1) { - return handleSingleFingerTouch(e, e.touches[0]) - } else if (e.touches.length === 2) { - // handleTouchMove() will care about pinch zoom. - pinchZoomLength = getPinchZoomLength(e.touches[0], e.touches[1]) - multitouch = true - startTouchListenerIfNeeded() - } - } - - function beforeTouch(e) { - if (options.onTouch && !options.onTouch(e)) { - // if they return `false` from onTouch, we don't want to stop - // events propagation. Fixes https://github.com/anvaka/panzoom/issues/12 - return - } - - e.stopPropagation() - e.preventDefault() - } - - function beforeDoubleClick(e) { - if (options.onDoubleClick && !options.onDoubleClick(e)) { - // if they return `false` from onTouch, we don't want to stop - // events propagation. Fixes https://github.com/anvaka/panzoom/issues/46 - return - } - - e.preventDefault() - e.stopPropagation() - } - - function handleSingleFingerTouch(e) { - var touch = e.touches[0] - var offset = getOffsetXY(touch) - mouseX = offset.x - mouseY = offset.y - - smoothScroll.cancel() - startTouchListenerIfNeeded() - } - - function startTouchListenerIfNeeded() { - if (!touchInProgress) { - touchInProgress = true - document.addEventListener('touchmove', handleTouchMove) - document.addEventListener('touchend', handleTouchEnd) - document.addEventListener('touchcancel', handleTouchEnd) - } - } - - function handleTouchMove(e) { - if (e.touches.length === 1) { - e.stopPropagation() - var touch = e.touches[0] - - var offset = getOffsetXY(touch) - - var dx = offset.x - mouseX - var dy = offset.y - mouseY - - if (dx !== 0 && dy !== 0) { - triggerPanStart() - } - mouseX = offset.x - mouseY = offset.y - var point = transformToScreen(dx, dy) - internalMoveBy(point.x, point.y) - } else if (e.touches.length === 2) { - // it's a zoom, let's find direction - multitouch = true - var t1 = e.touches[0] - var t2 = e.touches[1] - var currentPinchLength = getPinchZoomLength(t1, t2) - - var scaleMultiplier = 1 - - if (realPinch) { - scaleMultiplier = currentPinchLength / pinchZoomLength - } else { - var delta = 0 - if (currentPinchLength < pinchZoomLength) { - delta = 1 - } else if (currentPinchLength > pinchZoomLength) { - delta = -1 - } - - scaleMultiplier = getScaleMultiplier(delta) - } - - mouseX = (t1.clientX + t2.clientX)/2 - mouseY = (t1.clientY + t2.clientY)/2 - - publicZoomTo(mouseX, mouseY, scaleMultiplier) - - pinchZoomLength = currentPinchLength - e.stopPropagation() - e.preventDefault() - } - } - - function handleTouchEnd(e) { - if (e.touches.length > 0) { - var offset = getOffsetXY(e.touches[0]) - mouseX = offset.x - mouseY = offset.y - } else { - var now = new Date() - if (now - lastTouchEndTime < doubleTapSpeedInMS) { - smoothZoom(mouseX, mouseY, zoomDoubleClickSpeed) - } - - lastTouchEndTime = now - - touchInProgress = false - triggerPanEnd() - releaseTouches() - } - } - - function getPinchZoomLength(finger1, finger2) { - return Math.sqrt((finger1.clientX - finger2.clientX) * (finger1.clientX - finger2.clientX) + - (finger1.clientY - finger2.clientY) * (finger1.clientY - finger2.clientY)) - } - - function onDoubleClick(e) { - beforeDoubleClick(e); - var offset = getOffsetXY(e) - smoothZoom(offset.x, offset.y, zoomDoubleClickSpeed) - } - - function onMouseDown(e) { - if (touchInProgress) { - // modern browsers will fire mousedown for touch events too - // we do not want this: touch is handled separately. - e.stopPropagation() - return false - } - // for IE, left click == 1 - // for Firefox, left click == 0 - var isLeftButton = ((e.button === 1 && window.event !== null) || e.button === 0) - if (!isLeftButton) return - - smoothScroll.cancel() - - var offset = getOffsetXY(e); - var point = transformToScreen(offset.x, offset.y) - mouseX = point.x - mouseY = point.y - - // We need to listen on document itself, since mouse can go outside of the - // window, and we will loose it - document.addEventListener('mousemove', onMouseMove) - document.addEventListener('mouseup', onMouseUp) - - preventTextSelection.capture(e.target || e.srcElement) - - return false - } - - function onMouseMove(e) { - // no need to worry about mouse events when touch is happening - if (touchInProgress) return - - triggerPanStart() - - var offset = getOffsetXY(e); - var point = transformToScreen(offset.x, offset.y) - var dx = point.x - mouseX - var dy = point.y - mouseY - - mouseX = point.x - mouseY = point.y - - internalMoveBy(dx, dy) - } - - function onMouseUp() { - preventTextSelection.release() - triggerPanEnd() - releaseDocumentMouse() - } - - function releaseDocumentMouse() { - document.removeEventListener('mousemove', onMouseMove) - document.removeEventListener('mouseup', onMouseUp) - panstartFired = false - } - - function releaseTouches() { - document.removeEventListener('touchmove', handleTouchMove) - document.removeEventListener('touchend', handleTouchEnd) - document.removeEventListener('touchcancel', handleTouchEnd) - panstartFired = false - multitouch = false - } - - function onMouseWheel(e) { - // if client does not want to handle this event - just ignore the call - if (beforeWheel(e)) return - - smoothScroll.cancel() - - var scaleMultiplier = getScaleMultiplier(e.deltaY) - - if (scaleMultiplier !== 1) { - var offset = getOffsetXY(e) - publicZoomTo(offset.x, offset.y, scaleMultiplier) - e.preventDefault() - } - } - - function getOffsetXY(e) { - var offsetX, offsetY; - // I tried using e.offsetX, but that gives wrong results for svg, when user clicks on a path. - var ownerRect = owner.getBoundingClientRect(); - offsetX = e.clientX - ownerRect.left - offsetY = e.clientY - ownerRect.top - - return {x: offsetX, y: offsetY}; - } - - function smoothZoom(clientX, clientY, scaleMultiplier) { - var fromValue = transform.scale - var from = {scale: fromValue} - var to = {scale: scaleMultiplier * fromValue} - - smoothScroll.cancel() - cancelZoomAnimation() - - zoomToAnimation = animate(from, to, { - step: function(v) { - zoomAbs(clientX, clientY, v.scale) - } - }) - } - - function publicZoomTo(clientX, clientY, scaleMultiplier) { - smoothScroll.cancel() - cancelZoomAnimation() - return zoomByRatio(clientX, clientY, scaleMultiplier) - } - - function cancelZoomAnimation() { - if (zoomToAnimation) { - zoomToAnimation.cancel() - zoomToAnimation = null - } - } - - function getScaleMultiplier(delta) { - var scaleMultiplier = 1 - if (delta > 0) { // zoom out - scaleMultiplier = (1 - speed) - } else if (delta < 0) { // zoom in - scaleMultiplier = (1 + speed) - } - - return scaleMultiplier - } - - function triggerPanStart() { - if (!panstartFired) { - triggerEvent('panstart') - panstartFired = true - smoothScroll.start() - } - } - - function triggerPanEnd() { - if (panstartFired) { - // we should never run smooth scrolling if it was multitouch (pinch zoom animation): - if (!multitouch) smoothScroll.stop() - triggerEvent('panend') - } - } - - function triggerEvent(name) { - api.fire(name, api); - } -} - -function noop() { } - -function validateBounds(bounds) { - var boundsType = typeof bounds - if (boundsType === 'undefined' || boundsType === 'boolean') return // this is okay - // otherwise need to be more thorough: - var validBounds = isNumber(bounds.left) && isNumber(bounds.top) && - isNumber(bounds.bottom) && isNumber(bounds.right) - - if (!validBounds) throw new Error('Bounds object is not valid. It can be: ' + - 'undefined, boolean (true|false) or an object {left, top, right, bottom}') -} - -function isNumber(x) { - return Number.isFinite(x) -} - -// IE 11 does not support isNaN: -function isNaN(value) { - if (Number.isNaN) { - return Number.isNaN(value) - } - - return value !== value -} - -function rigidScroll() { - return { - start: noop, - stop: noop, - cancel: noop - } -} - - -function autoRun() { - if (typeof document === 'undefined') return - - var scripts = document.getElementsByTagName('script'); - if (!scripts) return; - var panzoomScript; - - Array.from(scripts).forEach(function(x) { - if (x.src && x.src.match(/\bpanzoom(\.min)?\.js/)) { - panzoomScript = x - } - }) - - if (!panzoomScript) return; - - var query = panzoomScript.getAttribute('query') - if (!query) return; - - var globalName = panzoomScript.getAttribute('name') || 'pz' - var started = Date.now() - - tryAttach(); - - function tryAttach() { - var el = document.querySelector(query) - if (!el) { - var now = Date.now() - var elapsed = now - started; - if (elapsed < 2000) { - // Let's wait a bit - setTimeout(tryAttach, 100); - return; - } - // If we don't attach within 2 seconds to the target element, consider it a failure - console.error('Cannot find the panzoom element', globalName) - return - } - var options = collectOptions(panzoomScript) - console.log(options) - window[globalName] = createPanZoom(el, options); - } - - function collectOptions(script) { - var attrs = script.attributes; - var options = {}; - for(var i = 0; i < attrs.length; ++i) { - var attr = attrs[i]; - var nameValue = getPanzoomAttributeNameValue(attr); - if (nameValue) { - options[nameValue.name] = nameValue.value - } - } - - return options; - } - - function getPanzoomAttributeNameValue(attr) { - if (!attr.name) return; - var isPanZoomAttribute = attr.name[0] === 'p' && attr.name[1] === 'z' && attr.name[2] === '-'; - - if (!isPanZoomAttribute) return; - - var name = attr.name.substr(3) - var value = JSON.parse(attr.value); - return {name: name, value: value}; - } -} - -autoRun(); +'use strict'; + +/* globals SVGElement */ +/** + * Allows to drag and zoom svg elements + */ +var wheel = require('wheel') +var animate = require('amator') +var eventify = require('ngraph.events'); +var kinetic = require('./lib/kinetic.js') +var preventTextSelection = require('./lib/textSelectionInterceptor.js')() +var Transform = require('./lib/transform.js'); +var makeSvgController = require('./lib/svgController.js') +var makeDomController = require('./lib/domController.js') + +var defaultZoomSpeed = 0.065 +var defaultDoubleTapZoomSpeed = 1.75 +var doubleTapSpeedInMS = 300 + +module.exports = createPanZoom + +/** + * Creates a new instance of panzoom, so that an object can be panned and zoomed + * + * @param {DOMElement} domElement where panzoom should be attached. + * @param {Object} options that configure behavior. + */ +function createPanZoom(domElement, options) { + options = options || {} + + var panController = options.controller + + if (!panController) { + if (domElement instanceof SVGElement) { + panController = makeSvgController(domElement) + } + + if (domElement instanceof HTMLElement) { + panController = makeDomController(domElement) + } + } + + if (!panController) { + throw new Error('Cannot create panzoom for the current type of dom element') + } + var owner = panController.getOwner() + // just to avoid GC pressure, every time we do intermediate transform + // we return this object. For internal use only. Never give it back to the consumer of this library + var storedCTMResult = {x: 0, y: 0} + + var isDirty = false + var transform = new Transform() + + if (panController.initTransform) { + panController.initTransform(transform) + } + + var filterKey = typeof options.filterKey === 'function' ? options.filterKey : noop; + var realPinch = typeof options.realPinch === 'boolean' ? options.realPinch : false + var bounds = options.bounds + var maxZoom = typeof options.maxZoom === 'number' ? options.maxZoom : Number.POSITIVE_INFINITY + var minZoom = typeof options.minZoom === 'number' ? options.minZoom : 0 + + var boundsPadding = typeof options.boundsPadding === 'number' ? options.boundsPadding : 0.05 + var zoomDoubleClickSpeed = typeof options.zoomDoubleClickSpeed === 'number' ? options.zoomDoubleClickSpeed : defaultDoubleTapZoomSpeed + var beforeWheel = options.beforeWheel || noop + var speed = typeof options.zoomSpeed === 'number' ? options.zoomSpeed : defaultZoomSpeed + + validateBounds(bounds) + + if (options.autocenter) { + autocenter() + } + + var frameAnimation + + var lastTouchEndTime = 0 + + var touchInProgress = false + + // We only need to fire panstart when actual move happens + var panstartFired = false + + // cache mouse coordinates here + var mouseX + var mouseY + + var pinchZoomLength + + var smoothScroll + if ('smoothScroll' in options && !options.smoothScroll) { + // If user explicitly asked us not to use smooth scrolling, we obey + smoothScroll = rigidScroll() + } else { + // otherwise we use forward smoothScroll settings to kinetic API + // which makes scroll smoothing. + smoothScroll = kinetic(getPoint, scroll, options.smoothScroll) + } + + var moveByAnimation + var zoomToAnimation + + var multitouch + var paused = false + + listenForEvents() + + var api = { + dispose: dispose, + moveBy: internalMoveBy, + moveTo: moveTo, + centerOn: centerOn, + zoomTo: publicZoomTo, + zoomAbs: zoomAbs, + smoothZoom: smoothZoom, + getTransform: getTransformModel, + showRectangle: showRectangle, + + pause: pause, + resume: resume, + isPaused: isPaused, + } + + eventify(api); + + return api; + + function pause() { + releaseEvents() + paused = true + } + + function resume() { + if (paused) { + listenForEvents() + paused = false + } + } + + function isPaused() { + return paused; + } + + function showRectangle(rect) { + // TODO: this duplicates autocenter. I think autocenter should go. + var size = transformToScreen(owner.clientWidth, owner.clientHeight) + + var rectWidth = rect.right - rect.left + var rectHeight = rect.bottom - rect.top + if (!Number.isFinite(rectWidth) || !Number.isFinite(rectHeight)) { + throw new Error('Invalid rectangle'); + } + + var dw = size.x/rectWidth + var dh = size.y/rectHeight + var scale = Math.min(dw, dh) + transform.x = -(rect.left + rectWidth/2) * scale + size.x/2 + transform.y = -(rect.top + rectHeight/2) * scale + size.y/2 + transform.scale = scale + } + + function transformToScreen(x, y) { + if (panController.getScreenCTM) { + var parentCTM = panController.getScreenCTM() + var parentScaleX = parentCTM.a + var parentScaleY = parentCTM.d + var parentOffsetX = parentCTM.e + var parentOffsetY = parentCTM.f + storedCTMResult.x = x * parentScaleX - parentOffsetX + storedCTMResult.y = y * parentScaleY - parentOffsetY + } else { + storedCTMResult.x = x + storedCTMResult.y = y + } + + return storedCTMResult + } + + function autocenter() { + var w // width of the parent + var h // height of the parent + var left = 0 + var top = 0 + var sceneBoundingBox = getBoundingBox() + if (sceneBoundingBox) { + // If we have bounding box - use it. + left = sceneBoundingBox.left + top = sceneBoundingBox.top + w = sceneBoundingBox.right - sceneBoundingBox.left + h = sceneBoundingBox.bottom - sceneBoundingBox.top + } else { + // otherwise just use whatever space we have + var ownerRect = owner.getBoundingClientRect(); + w = ownerRect.width + h = ownerRect.height + } + var bbox = panController.getBBox() + if (bbox.width === 0 || bbox.height === 0) { + // we probably do not have any elements in the SVG + // just bail out; + return; + } + var dh = h/bbox.height + var dw = w/bbox.width + var scale = Math.min(dw, dh) + transform.x = -(bbox.left + bbox.width/2) * scale + w/2 + left + transform.y = -(bbox.top + bbox.height/2) * scale + h/2 + top + transform.scale = scale + } + + function getTransformModel() { + // TODO: should this be read only? + return transform + } + + function getPoint() { + return { + x: transform.x, + y: transform.y + } + } + + function moveTo(x, y) { + transform.x = x + transform.y = y + + keepTransformInsideBounds() + + triggerEvent('pan') + makeDirty() + } + + function moveBy(dx, dy) { + moveTo(transform.x + dx, transform.y + dy) + } + + function keepTransformInsideBounds() { + var boundingBox = getBoundingBox() + if (!boundingBox) return + + var adjusted = false + var clientRect = getClientRect() + + var diff = boundingBox.left - clientRect.right + if (diff > 0) { + transform.x += diff + adjusted = true + } + // check the other side: + diff = boundingBox.right - clientRect.left + if (diff < 0) { + transform.x += diff + adjusted = true + } + + // y axis: + diff = boundingBox.top - clientRect.bottom + if (diff > 0) { + // we adjust transform, so that it matches exactly our bounding box: + // transform.y = boundingBox.top - (boundingBox.height + boundingBox.y) * transform.scale => + // transform.y = boundingBox.top - (clientRect.bottom - transform.y) => + // transform.y = diff + transform.y => + transform.y += diff + adjusted = true + } + + diff = boundingBox.bottom - clientRect.top + if (diff < 0) { + transform.y += diff + adjusted = true + } + return adjusted + } + + /** + * Returns bounding box that should be used to restrict scene movement. + */ + function getBoundingBox() { + if (!bounds) return // client does not want to restrict movement + + if (typeof bounds === 'boolean') { + // for boolean type we use parent container bounds + var ownerRect = owner.getBoundingClientRect() + var sceneWidth = ownerRect.width + var sceneHeight = ownerRect.height + + return { + left: sceneWidth * boundsPadding, + top: sceneHeight * boundsPadding, + right: sceneWidth * (1 - boundsPadding), + bottom: sceneHeight * (1 - boundsPadding), + } + } + + return bounds + } + + function getClientRect() { + var bbox = panController.getBBox() + var leftTop = client(bbox.left, bbox.top) + + return { + left: leftTop.x, + top: leftTop.y, + right: bbox.width * transform.scale + leftTop.x, + bottom: bbox.height * transform.scale + leftTop.y + } + } + + function client(x, y) { + return { + x: (x * transform.scale) + transform.x, + y: (y * transform.scale) + transform.y + } + } + + function makeDirty() { + isDirty = true + frameAnimation = window.requestAnimationFrame(frame) + } + + function zoomByRatio(clientX, clientY, ratio) { + if (isNaN(clientX) || isNaN(clientY) || isNaN(ratio)) { + throw new Error('zoom requires valid numbers') + } + + var newScale = transform.scale * ratio + + if (newScale < minZoom) { + if (transform.scale === minZoom) return; + + ratio = minZoom / transform.scale + } + if (newScale > maxZoom) { + if (transform.scale === maxZoom) return; + + ratio = maxZoom / transform.scale + } + + var size = transformToScreen(clientX, clientY) + + transform.x = size.x - ratio * (size.x - transform.x) + transform.y = size.y - ratio * (size.y - transform.y) + + var transformAdjusted = keepTransformInsideBounds() + if (!transformAdjusted) transform.scale *= ratio + + triggerEvent('zoom') + + makeDirty() + } + + function zoomAbs(clientX, clientY, zoomLevel) { + var ratio = zoomLevel / transform.scale + zoomByRatio(clientX, clientY, ratio) + } + + function centerOn(ui) { + var parent = ui.ownerSVGElement + if (!parent) throw new Error('ui element is required to be within the scene') + + // TODO: should i use controller's screen CTM? + var clientRect = ui.getBoundingClientRect() + var cx = clientRect.left + clientRect.width/2 + var cy = clientRect.top + clientRect.height/2 + + var container = parent.getBoundingClientRect() + var dx = container.width/2 - cx + var dy = container.height/2 - cy + + internalMoveBy(dx, dy, true) + } + + function internalMoveBy(dx, dy, smooth) { + if (!smooth) { + return moveBy(dx, dy) + } + + if (moveByAnimation) moveByAnimation.cancel() + + var from = { x: 0, y: 0 } + var to = { x: dx, y : dy } + var lastX = 0 + var lastY = 0 + + moveByAnimation = animate(from, to, { + step: function(v) { + moveBy(v.x - lastX, v.y - lastY) + + lastX = v.x + lastY = v.y + } + }) + } + + function scroll(x, y) { + cancelZoomAnimation() + moveTo(x, y) + } + + function dispose() { + releaseEvents(); + } + + function listenForEvents() { + owner.addEventListener('mousedown', onMouseDown) + owner.addEventListener('dblclick', onDoubleClick) + owner.addEventListener('touchstart', onTouch) + owner.addEventListener('keydown', onKeyDown) + + // Need to listen on the owner container, so that we are not limited + // by the size of the scrollable domElement + wheel.addWheelListener(owner, onMouseWheel) + + makeDirty() + } + + function releaseEvents() { + wheel.removeWheelListener(owner, onMouseWheel) + owner.removeEventListener('mousedown', onMouseDown) + owner.removeEventListener('keydown', onKeyDown) + owner.removeEventListener('dblclick', onDoubleClick) + owner.removeEventListener('touchstart', onTouch) + + if (frameAnimation) { + window.cancelAnimationFrame(frameAnimation) + frameAnimation = 0 + } + + smoothScroll.cancel() + + releaseDocumentMouse() + releaseTouches() + + triggerPanEnd() + } + + + function frame() { + if (isDirty) applyTransform() + } + + function applyTransform() { + isDirty = false + + // TODO: Should I allow to cancel this? + panController.applyTransform(transform) + + triggerEvent('transform') + frameAnimation = 0 + } + + function onKeyDown(e) { + var x = 0, y = 0, z = 0 + if (e.keyCode === 38) { + y = 1 // up + } else if (e.keyCode === 40) { + y = -1 // down + } else if (e.keyCode === 37) { + x = 1 // left + } else if (e.keyCode === 39) { + x = -1 // right + } else if (e.keyCode === 189 || e.keyCode === 109) { // DASH or SUBTRACT + z = 1 // `-` - zoom out + } else if (e.keyCode === 187 || e.keyCode === 107) { // EQUAL SIGN or ADD + z = -1 // `=` - zoom in (equal sign on US layout is under `+`) + } + + if (filterKey(e, x, y, z)) { + // They don't want us to handle the key: https://github.com/anvaka/panzoom/issues/45 + return; + } + + transform = panController.getTransform(); + + if (x || y) { + e.preventDefault() + e.stopPropagation() + + var clientRect = owner.getBoundingClientRect() + // movement speed should be the same in both X and Y direction: + var offset = Math.min(clientRect.width, clientRect.height) + var moveSpeedRatio = 0.05 + var dx = offset * moveSpeedRatio * x + var dy = offset * moveSpeedRatio * y + + // TODO: currently we do not animate this. It could be better to have animation + internalMoveBy(dx, dy) + } + + if (z) { + var scaleMultiplier = getScaleMultiplier(z) + var ownerRect = owner.getBoundingClientRect() + publicZoomTo(ownerRect.width/2, ownerRect.height/2, scaleMultiplier) + } + } + + function onTouch(e) { + // let the override the touch behavior + beforeTouch(e); + + transform = panController.getTransform(); + + if (e.touches.length === 1) { + return handleSingleFingerTouch(e, e.touches[0]) + } else if (e.touches.length === 2) { + // handleTouchMove() will care about pinch zoom. + pinchZoomLength = getPinchZoomLength(e.touches[0], e.touches[1]) + multitouch = true + startTouchListenerIfNeeded() + } + } + + function beforeTouch(e) { + if (options.onTouch && !options.onTouch(e)) { + // if they return `false` from onTouch, we don't want to stop + // events propagation. Fixes https://github.com/anvaka/panzoom/issues/12 + return + } + + e.stopPropagation() + e.preventDefault() + } + + function beforeDoubleClick(e) { + if (options.onDoubleClick && !options.onDoubleClick(e)) { + // if they return `false` from onTouch, we don't want to stop + // events propagation. Fixes https://github.com/anvaka/panzoom/issues/46 + return + } + + e.preventDefault() + e.stopPropagation() + } + + function handleSingleFingerTouch(e) { + var touch = e.touches[0] + var offset = getOffsetXY(touch) + mouseX = offset.x + mouseY = offset.y + + smoothScroll.cancel() + startTouchListenerIfNeeded() + } + + function startTouchListenerIfNeeded() { + if (!touchInProgress) { + touchInProgress = true + document.addEventListener('touchmove', handleTouchMove) + document.addEventListener('touchend', handleTouchEnd) + document.addEventListener('touchcancel', handleTouchEnd) + } + } + + function handleTouchMove(e) { + if (e.touches.length === 1) { + e.stopPropagation() + var touch = e.touches[0] + + var offset = getOffsetXY(touch) + + var dx = offset.x - mouseX + var dy = offset.y - mouseY + + if (dx !== 0 && dy !== 0) { + triggerPanStart() + } + mouseX = offset.x + mouseY = offset.y + var point = transformToScreen(dx, dy) + internalMoveBy(point.x, point.y) + } else if (e.touches.length === 2) { + // it's a zoom, let's find direction + multitouch = true + var t1 = e.touches[0] + var t2 = e.touches[1] + var currentPinchLength = getPinchZoomLength(t1, t2) + + var scaleMultiplier = 1 + + if (realPinch) { + scaleMultiplier = currentPinchLength / pinchZoomLength + } else { + var delta = 0 + if (currentPinchLength < pinchZoomLength) { + delta = 1 + } else if (currentPinchLength > pinchZoomLength) { + delta = -1 + } + + scaleMultiplier = getScaleMultiplier(delta) + } + + mouseX = (t1.clientX + t2.clientX)/2 + mouseY = (t1.clientY + t2.clientY)/2 + + publicZoomTo(mouseX, mouseY, scaleMultiplier) + + pinchZoomLength = currentPinchLength + e.stopPropagation() + e.preventDefault() + } + } + + function handleTouchEnd(e) { + if (e.touches.length > 0) { + var offset = getOffsetXY(e.touches[0]) + mouseX = offset.x + mouseY = offset.y + } else { + var now = new Date() + if (now - lastTouchEndTime < doubleTapSpeedInMS) { + smoothZoom(mouseX, mouseY, zoomDoubleClickSpeed) + } + + lastTouchEndTime = now + + touchInProgress = false + triggerPanEnd() + releaseTouches() + } + } + + function getPinchZoomLength(finger1, finger2) { + return Math.sqrt((finger1.clientX - finger2.clientX) * (finger1.clientX - finger2.clientX) + + (finger1.clientY - finger2.clientY) * (finger1.clientY - finger2.clientY)) + } + + function onDoubleClick(e) { + beforeDoubleClick(e); + transform = panController.getTransform(); + var offset = getOffsetXY(e) + smoothZoom(offset.x, offset.y, zoomDoubleClickSpeed) + } + + function onMouseDown(e) { + if (touchInProgress) { + // modern browsers will fire mousedown for touch events too + // we do not want this: touch is handled separately. + e.stopPropagation() + return false + } + // for IE, left click == 1 + // for Firefox, left click == 0 + var isLeftButton = ((e.button === 1 && window.event !== null) || e.button === 0) + if (!isLeftButton) return + + transform = panController.getTransform(); + + smoothScroll.cancel() + + var offset = getOffsetXY(e); + var point = transformToScreen(offset.x, offset.y) + mouseX = point.x + mouseY = point.y + + // We need to listen on document itself, since mouse can go outside of the + // window, and we will loose it + document.addEventListener('mousemove', onMouseMove) + document.addEventListener('mouseup', onMouseUp) + + preventTextSelection.capture(e.target || e.srcElement) + + return false + } + + function onMouseMove(e) { + // no need to worry about mouse events when touch is happening + if (touchInProgress) return + + triggerPanStart() + + var offset = getOffsetXY(e); + var point = transformToScreen(offset.x, offset.y) + var dx = point.x - mouseX + var dy = point.y - mouseY + + mouseX = point.x + mouseY = point.y + + internalMoveBy(dx, dy) + } + + function onMouseUp() { + preventTextSelection.release() + triggerPanEnd() + releaseDocumentMouse() + } + + function releaseDocumentMouse() { + document.removeEventListener('mousemove', onMouseMove) + document.removeEventListener('mouseup', onMouseUp) + panstartFired = false + } + + function releaseTouches() { + document.removeEventListener('touchmove', handleTouchMove) + document.removeEventListener('touchend', handleTouchEnd) + document.removeEventListener('touchcancel', handleTouchEnd) + panstartFired = false + multitouch = false + } + + function onMouseWheel(e) { + // if client does not want to handle this event - just ignore the call + if (beforeWheel(e)) return + + smoothScroll.cancel() + + var scaleMultiplier = getScaleMultiplier(e.deltaY) + + if (scaleMultiplier !== 1) { + var offset = getOffsetXY(e) + publicZoomTo(offset.x, offset.y, scaleMultiplier) + e.preventDefault() + } + } + + function getOffsetXY(e) { + var offsetX, offsetY; + // I tried using e.offsetX, but that gives wrong results for svg, when user clicks on a path. + var ownerRect = owner.getBoundingClientRect(); + offsetX = e.clientX - ownerRect.left + offsetY = e.clientY - ownerRect.top + + return {x: offsetX, y: offsetY}; + } + + function smoothZoom(clientX, clientY, scaleMultiplier) { + var fromValue = transform.scale + var from = {scale: fromValue} + var to = {scale: scaleMultiplier * fromValue} + + smoothScroll.cancel() + cancelZoomAnimation() + + zoomToAnimation = animate(from, to, { + step: function(v) { + zoomAbs(clientX, clientY, v.scale) + } + }) + } + + function publicZoomTo(clientX, clientY, scaleMultiplier) { + smoothScroll.cancel() + cancelZoomAnimation() + return zoomByRatio(clientX, clientY, scaleMultiplier) + } + + function cancelZoomAnimation() { + if (zoomToAnimation) { + zoomToAnimation.cancel() + zoomToAnimation = null + } + } + + function getScaleMultiplier(delta) { + var scaleMultiplier = 1 + if (delta > 0) { // zoom out + scaleMultiplier = (1 - speed) + } else if (delta < 0) { // zoom in + scaleMultiplier = (1 + speed) + } + + return scaleMultiplier + } + + function triggerPanStart() { + if (!panstartFired) { + triggerEvent('panstart') + panstartFired = true + smoothScroll.start() + } + } + + function triggerPanEnd() { + if (panstartFired) { + // we should never run smooth scrolling if it was multitouch (pinch zoom animation): + if (!multitouch) smoothScroll.stop() + triggerEvent('panend') + } + } + + function triggerEvent(name) { + api.fire(name, api); + } +} + +function noop() { } + +function validateBounds(bounds) { + var boundsType = typeof bounds + if (boundsType === 'undefined' || boundsType === 'boolean') return // this is okay + // otherwise need to be more thorough: + var validBounds = isNumber(bounds.left) && isNumber(bounds.top) && + isNumber(bounds.bottom) && isNumber(bounds.right) + + if (!validBounds) throw new Error('Bounds object is not valid. It can be: ' + + 'undefined, boolean (true|false) or an object {left, top, right, bottom}') +} + +function isNumber(x) { + return Number.isFinite(x) +} + +// IE 11 does not support isNaN: +function isNaN(value) { + if (Number.isNaN) { + return Number.isNaN(value) + } + + return value !== value +} + +function rigidScroll() { + return { + start: noop, + stop: noop, + cancel: noop + } +} + + +function autoRun() { + if (typeof document === 'undefined') return + + var scripts = document.getElementsByTagName('script'); + if (!scripts) return; + var panzoomScript; + + Array.from(scripts).forEach(function(x) { + if (x.src && x.src.match(/\bpanzoom(\.min)?\.js/)) { + panzoomScript = x + } + }) + + if (!panzoomScript) return; + + var query = panzoomScript.getAttribute('query') + if (!query) return; + + var globalName = panzoomScript.getAttribute('name') || 'pz' + var started = Date.now() + + tryAttach(); + + function tryAttach() { + var el = document.querySelector(query) + if (!el) { + var now = Date.now() + var elapsed = now - started; + if (elapsed < 2000) { + // Let's wait a bit + setTimeout(tryAttach, 100); + return; + } + // If we don't attach within 2 seconds to the target element, consider it a failure + console.error('Cannot find the panzoom element', globalName) + return + } + var options = collectOptions(panzoomScript) + console.log(options) + window[globalName] = createPanZoom(el, options); + } + + function collectOptions(script) { + var attrs = script.attributes; + var options = {}; + for(var i = 0; i < attrs.length; ++i) { + var attr = attrs[i]; + var nameValue = getPanzoomAttributeNameValue(attr); + if (nameValue) { + options[nameValue.name] = nameValue.value + } + } + + return options; + } + + function getPanzoomAttributeNameValue(attr) { + if (!attr.name) return; + var isPanZoomAttribute = attr.name[0] === 'p' && attr.name[1] === 'z' && attr.name[2] === '-'; + + if (!isPanZoomAttribute) return; + + var name = attr.name.substr(3) + var value = JSON.parse(attr.value); + return {name: name, value: value}; + } +} + +autoRun(); },{"./lib/domController.js":2,"./lib/kinetic.js":3,"./lib/svgController.js":4,"./lib/textSelectionInterceptor.js":5,"./lib/transform.js":6,"amator":7,"ngraph.events":9,"wheel":10}],2:[function(require,module,exports){ -module.exports = makeDomController - -function makeDomController(domElement) { - var elementValid = (domElement instanceof HTMLElement) - if (!elementValid) { - throw new Error('svg element is required for svg.panzoom to work') - } - - var owner = domElement.parentElement - if (!owner) { - throw new Error( - 'Do not apply panzoom to the detached DOM element. ' - ) - } - - domElement.scrollTop = 0; - owner.setAttribute('tabindex', 1); // TODO: not sure if this is really polite - - var api = { - getBBox: getBBox, - getOwner: getOwner, - applyTransform: applyTransform, - } - - return api - - function getOwner() { - return owner - } - - function getBBox() { - // TODO: We should probably cache this? - return { - left: 0, - top: 0, - width: domElement.clientWidth, - height: domElement.clientHeight - } - } - - function applyTransform(transform) { - // TODO: Should we cache this? - domElement.style.transformOrigin = '0 0 0'; - domElement.style.transform = 'matrix(' + - transform.scale + ', 0, 0, ' + - transform.scale + ', ' + - transform.x + ', ' + transform.y + ')' - } -} - -},{}],3:[function(require,module,exports){ -/** - * Allows smooth kinetic scrolling of the surface - */ -module.exports = kinetic; - -function kinetic(getPoint, scroll, settings) { - if (typeof settings !== 'object') { - // setting could come as boolean, we should ignore it, and use an object. - settings = {} - } - - var minVelocity = (typeof settings.minVelocity === 'number') ? settings.minVelocity : 5 - var amplitude = (typeof settings.amplitude === 'number') ? settings.amplitude : 0.25 - - var lastPoint - var timestamp - var timeConstant = 342 - - var ticker - var vx, targetX, ax; - var vy, targetY, ay; - - var raf - - return { - start: start, - stop: stop, - cancel: dispose - } - - function dispose() { - window.clearInterval(ticker) - window.cancelAnimationFrame(raf) - } - - function start() { - lastPoint = getPoint() - - ax = ay = vx = vy = 0 - timestamp = new Date() - - window.clearInterval(ticker) - window.cancelAnimationFrame(raf) - - // we start polling the point position to accumulate velocity - // Once we stop(), we will use accumulated velocity to keep scrolling - // an object. - ticker = window.setInterval(track, 100); - } - - function track() { - var now = Date.now(); - var elapsed = now - timestamp; - timestamp = now; - - var currentPoint = getPoint() - - var dx = currentPoint.x - lastPoint.x - var dy = currentPoint.y - lastPoint.y - - lastPoint = currentPoint - - var dt = 1000 / (1 + elapsed) - - // moving average - vx = 0.8 * dx * dt + 0.2 * vx - vy = 0.8 * dy * dt + 0.2 * vy - } - - function stop() { - window.clearInterval(ticker); - window.cancelAnimationFrame(raf) - - var currentPoint = getPoint() - - targetX = currentPoint.x - targetY = currentPoint.y - timestamp = Date.now() - - if (vx < -minVelocity || vx > minVelocity) { - ax = amplitude * vx - targetX += ax - } - - if (vy < -minVelocity || vy > minVelocity) { - ay = amplitude * vy - targetY += ay - } - - raf = window.requestAnimationFrame(autoScroll); - } - - function autoScroll() { - var elapsed = Date.now() - timestamp - - var moving = false - var dx = 0 - var dy = 0 - - if (ax) { - dx = -ax * Math.exp(-elapsed / timeConstant) - - if (dx > 0.5 || dx < -0.5) moving = true - else dx = ax = 0 - } - - if (ay) { - dy = -ay * Math.exp(-elapsed / timeConstant) - - if (dy > 0.5 || dy < -0.5) moving = true - else dy = ay = 0 - } - - if (moving) { - scroll(targetX + dx, targetY + dy) - raf = window.requestAnimationFrame(autoScroll); - } - } - -} +module.exports = makeDomController + +var Transform = require('./transform.js'); + +function makeDomController(domElement) { + var elementValid = (domElement instanceof HTMLElement) + if (!elementValid) { + throw new Error('svg element is required for svg.panzoom to work') + } + + var owner = domElement.parentElement + if (!owner) { + throw new Error( + 'Do not apply panzoom to the detached DOM element. ' + ) + } + + domElement.scrollTop = 0; + owner.setAttribute('tabindex', 1); // TODO: not sure if this is really polite + + var api = { + getBBox: getBBox, + getOwner: getOwner, + applyTransform: applyTransform, + getTransform: getTransform, + } + + return api + + function getOwner() { + return owner + } + + function getBBox() { + // TODO: We should probably cache this? + return { + left: 0, + top: 0, + width: domElement.clientWidth, + height: domElement.clientHeight + } + } + + function applyTransform(transform) { + // TODO: Should we cache this? + domElement.style.transformOrigin = '0 0 0'; + domElement.style.transform = 'matrix(' + + transform.scale + ', 0, 0, ' + + transform.scale + ', ' + + transform.x + ', ' + transform.y + ')' + } + + function getTransform() { + var transformStyle = domElement.style.transform; + var transform = new Transform(); + if (!transformStyle.startsWith('matrix(')) { + return transform; + } + + var transformArray = transformStyle.substring(transformStyle.indexOf('(') + 1, transformStyle.lastIndexOf(')')).split(', '); + transform.x = parseFloat(transformArray[4]); + transform.y = parseFloat(transformArray[5]); + transform.scale = parseFloat(transformArray[0]); + + return transform; + } +} + +},{"./transform.js":6}],3:[function(require,module,exports){ +/** + * Allows smooth kinetic scrolling of the surface + */ +module.exports = kinetic; + +function kinetic(getPoint, scroll, settings) { + if (typeof settings !== 'object') { + // setting could come as boolean, we should ignore it, and use an object. + settings = {} + } + + var minVelocity = (typeof settings.minVelocity === 'number') ? settings.minVelocity : 5 + var amplitude = (typeof settings.amplitude === 'number') ? settings.amplitude : 0.25 + + var lastPoint + var timestamp + var timeConstant = 342 + + var ticker + var vx, targetX, ax; + var vy, targetY, ay; + + var raf + + return { + start: start, + stop: stop, + cancel: dispose + } + + function dispose() { + window.clearInterval(ticker) + window.cancelAnimationFrame(raf) + } + + function start() { + lastPoint = getPoint() + + ax = ay = vx = vy = 0 + timestamp = new Date() + + window.clearInterval(ticker) + window.cancelAnimationFrame(raf) + + // we start polling the point position to accumulate velocity + // Once we stop(), we will use accumulated velocity to keep scrolling + // an object. + ticker = window.setInterval(track, 100); + } + + function track() { + var now = Date.now(); + var elapsed = now - timestamp; + timestamp = now; + + var currentPoint = getPoint() + + var dx = currentPoint.x - lastPoint.x + var dy = currentPoint.y - lastPoint.y + + lastPoint = currentPoint + + var dt = 1000 / (1 + elapsed) + + // moving average + vx = 0.8 * dx * dt + 0.2 * vx + vy = 0.8 * dy * dt + 0.2 * vy + } + + function stop() { + window.clearInterval(ticker); + window.cancelAnimationFrame(raf) + + var currentPoint = getPoint() + + targetX = currentPoint.x + targetY = currentPoint.y + timestamp = Date.now() + + if (vx < -minVelocity || vx > minVelocity) { + ax = amplitude * vx + targetX += ax + } + + if (vy < -minVelocity || vy > minVelocity) { + ay = amplitude * vy + targetY += ay + } + + raf = window.requestAnimationFrame(autoScroll); + } + + function autoScroll() { + var elapsed = Date.now() - timestamp + + var moving = false + var dx = 0 + var dy = 0 + + if (ax) { + dx = -ax * Math.exp(-elapsed / timeConstant) + + if (dx > 0.5 || dx < -0.5) moving = true + else dx = ax = 0 + } + + if (ay) { + dy = -ay * Math.exp(-elapsed / timeConstant) + + if (dy > 0.5 || dy < -0.5) moving = true + else dy = ay = 0 + } + + if (moving) { + scroll(targetX + dx, targetY + dy) + raf = window.requestAnimationFrame(autoScroll); + } + } + +} },{}],4:[function(require,module,exports){ -module.exports = makeSvgController - -function makeSvgController(svgElement) { - var elementValid = (svgElement instanceof SVGElement) - if (!elementValid) { - throw new Error('svg element is required for svg.panzoom to work') - } - - var owner = svgElement.ownerSVGElement - if (!owner) { - throw new Error( - 'Do not apply panzoom to the root element. ' + - 'Use its child instead (e.g. ). ' + - 'As of March 2016 only FireFox supported transform on the root element') - } - - owner.setAttribute('tabindex', 1); // TODO: not sure if this is really polite - - var api = { - getBBox: getBBox, - getScreenCTM: getScreenCTM, - getOwner: getOwner, - applyTransform: applyTransform, - initTransform: initTransform - } - - return api - - function getOwner() { - return owner - } - - function getBBox() { - var bbox = svgElement.getBBox() - return { - left: bbox.x, - top: bbox.y, - width: bbox.width, - height: bbox.height, - } - } - - function getScreenCTM() { - return owner.getScreenCTM() - } - - function initTransform(transform) { - var screenCTM = svgElement.getScreenCTM() - transform.x = screenCTM.e; - transform.y = screenCTM.f; - transform.scale = screenCTM.a; - owner.removeAttributeNS(null, 'viewBox'); - } - - function applyTransform(transform) { - svgElement.setAttribute('transform', 'matrix(' + - transform.scale + ' 0 0 ' + - transform.scale + ' ' + - transform.x + ' ' + transform.y + ')') - } -} -},{}],5:[function(require,module,exports){ -/** - * Disallows selecting text. - */ -module.exports = createTextSelectionInterceptor - -function createTextSelectionInterceptor() { - var dragObject - var prevSelectStart - var prevDragStart - - return { - capture: capture, - release: release - } - - function capture(domObject) { - prevSelectStart = window.document.onselectstart - prevDragStart = window.document.ondragstart - - window.document.onselectstart = disabled - - dragObject = domObject - dragObject.ondragstart = disabled - } - - function release() { - window.document.onselectstart = prevSelectStart - if (dragObject) dragObject.ondragstart = prevDragStart - } -} - -function disabled(e) { - e.stopPropagation() - return false +module.exports = makeSvgController + +var Transform = require('./transform.js'); + +function makeSvgController(svgElement) { + var elementValid = (svgElement instanceof SVGElement) + if (!elementValid) { + throw new Error('svg element is required for svg.panzoom to work') + } + + var owner = svgElement.ownerSVGElement + if (!owner) { + throw new Error( + 'Do not apply panzoom to the root element. ' + + 'Use its child instead (e.g. ). ' + + 'As of March 2016 only FireFox supported transform on the root element') + } + + owner.setAttribute('tabindex', 1); // TODO: not sure if this is really polite + + var api = { + getBBox: getBBox, + getScreenCTM: getScreenCTM, + getOwner: getOwner, + applyTransform: applyTransform, + initTransform: initTransform, + getTransform: getTransform, + } + + return api + + function getOwner() { + return owner + } + + function getBBox() { + var bbox = svgElement.getBBox() + return { + left: bbox.x, + top: bbox.y, + width: bbox.width, + height: bbox.height, + } + } + + function getScreenCTM() { + return owner.getScreenCTM() + } + + function initTransform(transform) { + var screenCTM = svgElement.getScreenCTM() + transform.x = screenCTM.e; + transform.y = screenCTM.f; + transform.scale = screenCTM.a; + owner.removeAttributeNS(null, 'viewBox'); + } + + function applyTransform(transform) { + svgElement.setAttribute('transform', 'matrix(' + + transform.scale + ' 0 0 ' + + transform.scale + ' ' + + transform.x + ' ' + transform.y + ')') + } + + function getTransform() { + var transformStyle = svgElement.getAttribute('transform'); + var transform = new Transform(); + if (!transformStyle.startsWith('matrix(')) { + return transform; + } + + var transformArray = transformStyle.substring(transformStyle.indexOf('(') + 1, transformStyle.lastIndexOf(')')).split(' '); + transform.x = parseFloat(transformArray[4]); + transform.y = parseFloat(transformArray[5]); + transform.scale = parseFloat(transformArray[0]); + + return transform; + } } +},{"./transform.js":6}],5:[function(require,module,exports){ +/** + * Disallows selecting text. + */ +module.exports = createTextSelectionInterceptor + +function createTextSelectionInterceptor() { + var dragObject + var prevSelectStart + var prevDragStart + + return { + capture: capture, + release: release + } + + function capture(domObject) { + prevSelectStart = window.document.onselectstart + prevDragStart = window.document.ondragstart + + window.document.onselectstart = disabled + + dragObject = domObject + dragObject.ondragstart = disabled + } + + function release() { + window.document.onselectstart = prevSelectStart + if (dragObject) dragObject.ondragstart = prevDragStart + } +} + +function disabled(e) { + e.stopPropagation() + return false +} },{}],6:[function(require,module,exports){ -module.exports = Transform; - -function Transform() { - this.x = 0; - this.y = 0; - this.scale = 1; -} +module.exports = Transform; + +function Transform() { + this.x = 0; + this.y = 0; + this.scale = 1; +} },{}],7:[function(require,module,exports){ var BezierEasing = require('bezier-easing') diff --git a/dist/panzoom.min.js b/dist/panzoom.min.js index 06456cd..bfac210 100644 --- a/dist/panzoom.min.js +++ b/dist/panzoom.min.js @@ -1 +1 @@ -(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.panzoom=f()}})(function(){var define,module,exports;return 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;i0){transform.x+=diff;adjusted=true}diff=boundingBox.right-clientRect.left;if(diff<0){transform.x+=diff;adjusted=true}diff=boundingBox.top-clientRect.bottom;if(diff>0){transform.y+=diff;adjusted=true}diff=boundingBox.bottom-clientRect.top;if(diff<0){transform.y+=diff;adjusted=true}return adjusted}function getBoundingBox(){if(!bounds)return;if(typeof bounds==="boolean"){var ownerRect=owner.getBoundingClientRect();var sceneWidth=ownerRect.width;var sceneHeight=ownerRect.height;return{left:sceneWidth*boundsPadding,top:sceneHeight*boundsPadding,right:sceneWidth*(1-boundsPadding),bottom:sceneHeight*(1-boundsPadding)}}return bounds}function getClientRect(){var bbox=panController.getBBox();var leftTop=client(bbox.left,bbox.top);return{left:leftTop.x,top:leftTop.y,right:bbox.width*transform.scale+leftTop.x,bottom:bbox.height*transform.scale+leftTop.y}}function client(x,y){return{x:x*transform.scale+transform.x,y:y*transform.scale+transform.y}}function makeDirty(){isDirty=true;frameAnimation=window.requestAnimationFrame(frame)}function zoomByRatio(clientX,clientY,ratio){if(isNaN(clientX)||isNaN(clientY)||isNaN(ratio)){throw new Error("zoom requires valid numbers")}var newScale=transform.scale*ratio;if(newScalemaxZoom){if(transform.scale===maxZoom)return;ratio=maxZoom/transform.scale}var size=transformToScreen(clientX,clientY);transform.x=size.x-ratio*(size.x-transform.x);transform.y=size.y-ratio*(size.y-transform.y);var transformAdjusted=keepTransformInsideBounds();if(!transformAdjusted)transform.scale*=ratio;triggerEvent("zoom");makeDirty()}function zoomAbs(clientX,clientY,zoomLevel){var ratio=zoomLevel/transform.scale;zoomByRatio(clientX,clientY,ratio)}function centerOn(ui){var parent=ui.ownerSVGElement;if(!parent)throw new Error("ui element is required to be within the scene");var clientRect=ui.getBoundingClientRect();var cx=clientRect.left+clientRect.width/2;var cy=clientRect.top+clientRect.height/2;var container=parent.getBoundingClientRect();var dx=container.width/2-cx;var dy=container.height/2-cy;internalMoveBy(dx,dy,true)}function internalMoveBy(dx,dy,smooth){if(!smooth){return moveBy(dx,dy)}if(moveByAnimation)moveByAnimation.cancel();var from={x:0,y:0};var to={x:dx,y:dy};var lastX=0;var lastY=0;moveByAnimation=animate(from,to,{step:function(v){moveBy(v.x-lastX,v.y-lastY);lastX=v.x;lastY=v.y}})}function scroll(x,y){cancelZoomAnimation();moveTo(x,y)}function dispose(){releaseEvents()}function listenForEvents(){owner.addEventListener("mousedown",onMouseDown);owner.addEventListener("dblclick",onDoubleClick);owner.addEventListener("touchstart",onTouch);owner.addEventListener("keydown",onKeyDown);wheel.addWheelListener(owner,onMouseWheel);makeDirty()}function releaseEvents(){wheel.removeWheelListener(owner,onMouseWheel);owner.removeEventListener("mousedown",onMouseDown);owner.removeEventListener("keydown",onKeyDown);owner.removeEventListener("dblclick",onDoubleClick);owner.removeEventListener("touchstart",onTouch);if(frameAnimation){window.cancelAnimationFrame(frameAnimation);frameAnimation=0}smoothScroll.cancel();releaseDocumentMouse();releaseTouches();triggerPanEnd()}function frame(){if(isDirty)applyTransform()}function applyTransform(){isDirty=false;panController.applyTransform(transform);triggerEvent("transform");frameAnimation=0}function onKeyDown(e){var x=0,y=0,z=0;if(e.keyCode===38){y=1}else if(e.keyCode===40){y=-1}else if(e.keyCode===37){x=1}else if(e.keyCode===39){x=-1}else if(e.keyCode===189||e.keyCode===109){z=1}else if(e.keyCode===187||e.keyCode===107){z=-1}if(filterKey(e,x,y,z)){return}if(x||y){e.preventDefault();e.stopPropagation();var clientRect=owner.getBoundingClientRect();var offset=Math.min(clientRect.width,clientRect.height);var moveSpeedRatio=.05;var dx=offset*moveSpeedRatio*x;var dy=offset*moveSpeedRatio*y;internalMoveBy(dx,dy)}if(z){var scaleMultiplier=getScaleMultiplier(z);var ownerRect=owner.getBoundingClientRect();publicZoomTo(ownerRect.width/2,ownerRect.height/2,scaleMultiplier)}}function onTouch(e){beforeTouch(e);if(e.touches.length===1){return handleSingleFingerTouch(e,e.touches[0])}else if(e.touches.length===2){pinchZoomLength=getPinchZoomLength(e.touches[0],e.touches[1]);multitouch=true;startTouchListenerIfNeeded()}}function beforeTouch(e){if(options.onTouch&&!options.onTouch(e)){return}e.stopPropagation();e.preventDefault()}function beforeDoubleClick(e){if(options.onDoubleClick&&!options.onDoubleClick(e)){return}e.preventDefault();e.stopPropagation()}function handleSingleFingerTouch(e){var touch=e.touches[0];var offset=getOffsetXY(touch);mouseX=offset.x;mouseY=offset.y;smoothScroll.cancel();startTouchListenerIfNeeded()}function startTouchListenerIfNeeded(){if(!touchInProgress){touchInProgress=true;document.addEventListener("touchmove",handleTouchMove);document.addEventListener("touchend",handleTouchEnd);document.addEventListener("touchcancel",handleTouchEnd)}}function handleTouchMove(e){if(e.touches.length===1){e.stopPropagation();var touch=e.touches[0];var offset=getOffsetXY(touch);var dx=offset.x-mouseX;var dy=offset.y-mouseY;if(dx!==0&&dy!==0){triggerPanStart()}mouseX=offset.x;mouseY=offset.y;var point=transformToScreen(dx,dy);internalMoveBy(point.x,point.y)}else if(e.touches.length===2){multitouch=true;var t1=e.touches[0];var t2=e.touches[1];var currentPinchLength=getPinchZoomLength(t1,t2);var scaleMultiplier=1;if(realPinch){scaleMultiplier=currentPinchLength/pinchZoomLength}else{var delta=0;if(currentPinchLengthpinchZoomLength){delta=-1}scaleMultiplier=getScaleMultiplier(delta)}mouseX=(t1.clientX+t2.clientX)/2;mouseY=(t1.clientY+t2.clientY)/2;publicZoomTo(mouseX,mouseY,scaleMultiplier);pinchZoomLength=currentPinchLength;e.stopPropagation();e.preventDefault()}}function handleTouchEnd(e){if(e.touches.length>0){var offset=getOffsetXY(e.touches[0]);mouseX=offset.x;mouseY=offset.y}else{var now=new Date;if(now-lastTouchEndTime0){scaleMultiplier=1-speed}else if(delta<0){scaleMultiplier=1+speed}return scaleMultiplier}function triggerPanStart(){if(!panstartFired){triggerEvent("panstart");panstartFired=true;smoothScroll.start()}}function triggerPanEnd(){if(panstartFired){if(!multitouch)smoothScroll.stop();triggerEvent("panend")}}function triggerEvent(name){api.fire(name,api)}}function noop(){}function validateBounds(bounds){var boundsType=typeof bounds;if(boundsType==="undefined"||boundsType==="boolean")return;var validBounds=isNumber(bounds.left)&&isNumber(bounds.top)&&isNumber(bounds.bottom)&&isNumber(bounds.right);if(!validBounds)throw new Error("Bounds object is not valid. It can be: "+"undefined, boolean (true|false) or an object {left, top, right, bottom}")}function isNumber(x){return Number.isFinite(x)}function isNaN(value){if(Number.isNaN){return Number.isNaN(value)}return value!==value}function rigidScroll(){return{start:noop,stop:noop,cancel:noop}}function autoRun(){if(typeof document==="undefined")return;var scripts=document.getElementsByTagName("script");if(!scripts)return;var panzoomScript;Array.from(scripts).forEach(function(x){if(x.src&&x.src.match(/\bpanzoom(\.min)?\.js/)){panzoomScript=x}});if(!panzoomScript)return;var query=panzoomScript.getAttribute("query");if(!query)return;var globalName=panzoomScript.getAttribute("name")||"pz";var started=Date.now();tryAttach();function tryAttach(){var el=document.querySelector(query);if(!el){var now=Date.now();var elapsed=now-started;if(elapsed<2e3){setTimeout(tryAttach,100);return}console.error("Cannot find the panzoom element",globalName);return}var options=collectOptions(panzoomScript);console.log(options);window[globalName]=createPanZoom(el,options)}function collectOptions(script){var attrs=script.attributes;var options={};for(var i=0;iminVelocity){ax=amplitude*vx;targetX+=ax}if(vy<-minVelocity||vy>minVelocity){ay=amplitude*vy;targetY+=ay}raf=window.requestAnimationFrame(autoScroll)}function autoScroll(){var elapsed=Date.now()-timestamp;var moving=false;var dx=0;var dy=0;if(ax){dx=-ax*Math.exp(-elapsed/timeConstant);if(dx>.5||dx<-.5)moving=true;else dx=ax=0}if(ay){dy=-ay*Math.exp(-elapsed/timeConstant);if(dy>.5||dy<-.5)moving=true;else dy=ay=0}if(moving){scroll(targetX+dx,targetY+dy);raf=window.requestAnimationFrame(autoScroll)}}}},{}],4:[function(require,module,exports){module.exports=makeSvgController;function makeSvgController(svgElement){var elementValid=svgElement instanceof SVGElement;if(!elementValid){throw new Error("svg element is required for svg.panzoom to work")}var owner=svgElement.ownerSVGElement;if(!owner){throw new Error("Do not apply panzoom to the root element. "+"Use its child instead (e.g. ). "+"As of March 2016 only FireFox supported transform on the root element")}owner.setAttribute("tabindex",1);var api={getBBox:getBBox,getScreenCTM:getScreenCTM,getOwner:getOwner,applyTransform:applyTransform,initTransform:initTransform};return api;function getOwner(){return owner}function getBBox(){var bbox=svgElement.getBBox();return{left:bbox.x,top:bbox.y,width:bbox.width,height:bbox.height}}function getScreenCTM(){return owner.getScreenCTM()}function initTransform(transform){var screenCTM=svgElement.getScreenCTM();transform.x=screenCTM.e;transform.y=screenCTM.f;transform.scale=screenCTM.a;owner.removeAttributeNS(null,"viewBox")}function applyTransform(transform){svgElement.setAttribute("transform","matrix("+transform.scale+" 0 0 "+transform.scale+" "+transform.x+" "+transform.y+")")}}},{}],5:[function(require,module,exports){module.exports=createTextSelectionInterceptor;function createTextSelectionInterceptor(){var dragObject;var prevSelectStart;var prevDragStart;return{capture:capture,release:release};function capture(domObject){prevSelectStart=window.document.onselectstart;prevDragStart=window.document.ondragstart;window.document.onselectstart=disabled;dragObject=domObject;dragObject.ondragstart=disabled}function release(){window.document.onselectstart=prevSelectStart;if(dragObject)dragObject.ondragstart=prevDragStart}}function disabled(e){e.stopPropagation();return false}},{}],6:[function(require,module,exports){module.exports=Transform;function Transform(){this.x=0;this.y=0;this.scale=1}},{}],7:[function(require,module,exports){var BezierEasing=require("bezier-easing");var animations={ease:BezierEasing(.25,.1,.25,1),easeIn:BezierEasing(.42,0,1,1),easeOut:BezierEasing(0,0,.58,1),easeInOut:BezierEasing(.42,0,.58,1),linear:BezierEasing(0,0,1,1)};module.exports=animate;module.exports.makeAggregateRaf=makeAggregateRaf;module.exports.sharedScheduler=makeAggregateRaf();function animate(source,target,options){var start=Object.create(null);var diff=Object.create(null);options=options||{};var easing=typeof options.easing==="function"?options.easing:animations[options.easing];if(!easing){if(options.easing){console.warn("Unknown easing function in amator: "+options.easing)}easing=animations.ease}var step=typeof options.step==="function"?options.step:noop;var done=typeof options.done==="function"?options.done:noop;var scheduler=getScheduler(options.scheduler);var keys=Object.keys(target);keys.forEach(function(key){start[key]=source[key];diff[key]=target[key]-source[key]});var durationInMs=typeof options.duration==="number"?options.duration:400;var durationInFrames=Math.max(1,durationInMs*.06);var previousAnimationId;var frame=0;previousAnimationId=scheduler.next(loop);return{cancel:cancel};function cancel(){scheduler.cancel(previousAnimationId);previousAnimationId=0}function loop(){var t=easing(frame/durationInFrames);frame+=1;setValues(t);if(frame<=durationInFrames){previousAnimationId=scheduler.next(loop);step(source)}else{previousAnimationId=0;setTimeout(function(){done(source)},0)}}function setValues(t){keys.forEach(function(key){source[key]=diff[key]*t+start[key]})}}function noop(){}function getScheduler(scheduler){if(!scheduler){var canRaf=typeof window!=="undefined"&&window.requestAnimationFrame;return canRaf?rafScheduler():timeoutScheduler()}if(typeof scheduler.next!=="function")throw new Error("Scheduler is supposed to have next(cb) function");if(typeof scheduler.cancel!=="function")throw new Error("Scheduler is supposed to have cancel(handle) function");return scheduler}function rafScheduler(){return{next:window.requestAnimationFrame.bind(window),cancel:window.cancelAnimationFrame.bind(window)}}function timeoutScheduler(){return{next:function(cb){return setTimeout(cb,1e3/60)},cancel:function(id){return clearTimeout(id)}}}function makeAggregateRaf(){var frontBuffer=new Set;var backBuffer=new Set;var frameToken=0;return{next:next,cancel:next,clearAll:clearAll};function clearAll(){frontBuffer.clear();backBuffer.clear();cancelAnimationFrame(frameToken);frameToken=0}function next(callback){backBuffer.add(callback);renderNextFrame()}function renderNextFrame(){if(!frameToken)frameToken=requestAnimationFrame(renderFrame)}function renderFrame(){frameToken=0;var t=backBuffer;backBuffer=frontBuffer;frontBuffer=t;frontBuffer.forEach(function(callback){callback()});frontBuffer.clear()}function cancel(callback){backBuffer.delete(callback)}}},{"bezier-easing":8}],8:[function(require,module,exports){var NEWTON_ITERATIONS=4;var NEWTON_MIN_SLOPE=.001;var SUBDIVISION_PRECISION=1e-7;var SUBDIVISION_MAX_ITERATIONS=10;var kSplineTableSize=11;var kSampleStepSize=1/(kSplineTableSize-1);var float32ArraySupported=typeof Float32Array==="function";function A(aA1,aA2){return 1-3*aA2+3*aA1}function B(aA1,aA2){return 3*aA2-6*aA1}function C(aA1){return 3*aA1}function calcBezier(aT,aA1,aA2){return((A(aA1,aA2)*aT+B(aA1,aA2))*aT+C(aA1))*aT}function getSlope(aT,aA1,aA2){return 3*A(aA1,aA2)*aT*aT+2*B(aA1,aA2)*aT+C(aA1)}function binarySubdivide(aX,aA,aB,mX1,mX2){var currentX,currentT,i=0;do{currentT=aA+(aB-aA)/2;currentX=calcBezier(currentT,mX1,mX2)-aX;if(currentX>0){aB=currentT}else{aA=currentT}}while(Math.abs(currentX)>SUBDIVISION_PRECISION&&++i=NEWTON_MIN_SLOPE){return newtonRaphsonIterate(aX,guessForT,mX1,mX2)}else if(initialSlope===0){return guessForT}else{return binarySubdivide(aX,intervalStart,intervalStart+kSampleStepSize,mX1,mX2)}}return function BezierEasing(x){if(x===0){return 0}if(x===1){return 1}return calcBezier(getTForX(x),mY1,mY2)}}},{}],9:[function(require,module,exports){module.exports=function(subject){validateSubject(subject);var eventsStorage=createEventsStorage(subject);subject.on=eventsStorage.on;subject.off=eventsStorage.off;subject.fire=eventsStorage.fire;return subject};function createEventsStorage(subject){var registeredEvents=Object.create(null);return{on:function(eventName,callback,ctx){if(typeof callback!=="function"){throw new Error("callback is expected to be a function")}var handlers=registeredEvents[eventName];if(!handlers){handlers=registeredEvents[eventName]=[]}handlers.push({callback:callback,ctx:ctx});return subject},off:function(eventName,callback){var wantToRemoveAll=typeof eventName==="undefined";if(wantToRemoveAll){registeredEvents=Object.create(null);return subject}if(registeredEvents[eventName]){var deleteAllCallbacksForEvent=typeof callback!=="function";if(deleteAllCallbacksForEvent){delete registeredEvents[eventName]}else{var callbacks=registeredEvents[eventName];for(var i=0;i1){fireArguments=Array.prototype.splice.call(arguments,1)}for(var i=0;i0){transform.x+=diff;adjusted=true}diff=boundingBox.right-clientRect.left;if(diff<0){transform.x+=diff;adjusted=true}diff=boundingBox.top-clientRect.bottom;if(diff>0){transform.y+=diff;adjusted=true}diff=boundingBox.bottom-clientRect.top;if(diff<0){transform.y+=diff;adjusted=true}return adjusted}function getBoundingBox(){if(!bounds)return;if(typeof bounds==="boolean"){var ownerRect=owner.getBoundingClientRect();var sceneWidth=ownerRect.width;var sceneHeight=ownerRect.height;return{left:sceneWidth*boundsPadding,top:sceneHeight*boundsPadding,right:sceneWidth*(1-boundsPadding),bottom:sceneHeight*(1-boundsPadding)}}return bounds}function getClientRect(){var bbox=panController.getBBox();var leftTop=client(bbox.left,bbox.top);return{left:leftTop.x,top:leftTop.y,right:bbox.width*transform.scale+leftTop.x,bottom:bbox.height*transform.scale+leftTop.y}}function client(x,y){return{x:x*transform.scale+transform.x,y:y*transform.scale+transform.y}}function makeDirty(){isDirty=true;frameAnimation=window.requestAnimationFrame(frame)}function zoomByRatio(clientX,clientY,ratio){if(isNaN(clientX)||isNaN(clientY)||isNaN(ratio)){throw new Error("zoom requires valid numbers")}var newScale=transform.scale*ratio;if(newScalemaxZoom){if(transform.scale===maxZoom)return;ratio=maxZoom/transform.scale}var size=transformToScreen(clientX,clientY);transform.x=size.x-ratio*(size.x-transform.x);transform.y=size.y-ratio*(size.y-transform.y);var transformAdjusted=keepTransformInsideBounds();if(!transformAdjusted)transform.scale*=ratio;triggerEvent("zoom");makeDirty()}function zoomAbs(clientX,clientY,zoomLevel){var ratio=zoomLevel/transform.scale;zoomByRatio(clientX,clientY,ratio)}function centerOn(ui){var parent=ui.ownerSVGElement;if(!parent)throw new Error("ui element is required to be within the scene");var clientRect=ui.getBoundingClientRect();var cx=clientRect.left+clientRect.width/2;var cy=clientRect.top+clientRect.height/2;var container=parent.getBoundingClientRect();var dx=container.width/2-cx;var dy=container.height/2-cy;internalMoveBy(dx,dy,true)}function internalMoveBy(dx,dy,smooth){if(!smooth){return moveBy(dx,dy)}if(moveByAnimation)moveByAnimation.cancel();var from={x:0,y:0};var to={x:dx,y:dy};var lastX=0;var lastY=0;moveByAnimation=animate(from,to,{step:function(v){moveBy(v.x-lastX,v.y-lastY);lastX=v.x;lastY=v.y}})}function scroll(x,y){cancelZoomAnimation();moveTo(x,y)}function dispose(){releaseEvents()}function listenForEvents(){owner.addEventListener("mousedown",onMouseDown);owner.addEventListener("dblclick",onDoubleClick);owner.addEventListener("touchstart",onTouch);owner.addEventListener("keydown",onKeyDown);wheel.addWheelListener(owner,onMouseWheel);makeDirty()}function releaseEvents(){wheel.removeWheelListener(owner,onMouseWheel);owner.removeEventListener("mousedown",onMouseDown);owner.removeEventListener("keydown",onKeyDown);owner.removeEventListener("dblclick",onDoubleClick);owner.removeEventListener("touchstart",onTouch);if(frameAnimation){window.cancelAnimationFrame(frameAnimation);frameAnimation=0}smoothScroll.cancel();releaseDocumentMouse();releaseTouches();triggerPanEnd()}function frame(){if(isDirty)applyTransform()}function applyTransform(){isDirty=false;panController.applyTransform(transform);triggerEvent("transform");frameAnimation=0}function onKeyDown(e){var x=0,y=0,z=0;if(e.keyCode===38){y=1}else if(e.keyCode===40){y=-1}else if(e.keyCode===37){x=1}else if(e.keyCode===39){x=-1}else if(e.keyCode===189||e.keyCode===109){z=1}else if(e.keyCode===187||e.keyCode===107){z=-1}if(filterKey(e,x,y,z)){return}transform=panController.getTransform();if(x||y){e.preventDefault();e.stopPropagation();var clientRect=owner.getBoundingClientRect();var offset=Math.min(clientRect.width,clientRect.height);var moveSpeedRatio=.05;var dx=offset*moveSpeedRatio*x;var dy=offset*moveSpeedRatio*y;internalMoveBy(dx,dy)}if(z){var scaleMultiplier=getScaleMultiplier(z);var ownerRect=owner.getBoundingClientRect();publicZoomTo(ownerRect.width/2,ownerRect.height/2,scaleMultiplier)}}function onTouch(e){beforeTouch(e);transform=panController.getTransform();if(e.touches.length===1){return handleSingleFingerTouch(e,e.touches[0])}else if(e.touches.length===2){pinchZoomLength=getPinchZoomLength(e.touches[0],e.touches[1]);multitouch=true;startTouchListenerIfNeeded()}}function beforeTouch(e){if(options.onTouch&&!options.onTouch(e)){return}e.stopPropagation();e.preventDefault()}function beforeDoubleClick(e){if(options.onDoubleClick&&!options.onDoubleClick(e)){return}e.preventDefault();e.stopPropagation()}function handleSingleFingerTouch(e){var touch=e.touches[0];var offset=getOffsetXY(touch);mouseX=offset.x;mouseY=offset.y;smoothScroll.cancel();startTouchListenerIfNeeded()}function startTouchListenerIfNeeded(){if(!touchInProgress){touchInProgress=true;document.addEventListener("touchmove",handleTouchMove);document.addEventListener("touchend",handleTouchEnd);document.addEventListener("touchcancel",handleTouchEnd)}}function handleTouchMove(e){if(e.touches.length===1){e.stopPropagation();var touch=e.touches[0];var offset=getOffsetXY(touch);var dx=offset.x-mouseX;var dy=offset.y-mouseY;if(dx!==0&&dy!==0){triggerPanStart()}mouseX=offset.x;mouseY=offset.y;var point=transformToScreen(dx,dy);internalMoveBy(point.x,point.y)}else if(e.touches.length===2){multitouch=true;var t1=e.touches[0];var t2=e.touches[1];var currentPinchLength=getPinchZoomLength(t1,t2);var scaleMultiplier=1;if(realPinch){scaleMultiplier=currentPinchLength/pinchZoomLength}else{var delta=0;if(currentPinchLengthpinchZoomLength){delta=-1}scaleMultiplier=getScaleMultiplier(delta)}mouseX=(t1.clientX+t2.clientX)/2;mouseY=(t1.clientY+t2.clientY)/2;publicZoomTo(mouseX,mouseY,scaleMultiplier);pinchZoomLength=currentPinchLength;e.stopPropagation();e.preventDefault()}}function handleTouchEnd(e){if(e.touches.length>0){var offset=getOffsetXY(e.touches[0]);mouseX=offset.x;mouseY=offset.y}else{var now=new Date;if(now-lastTouchEndTime0){scaleMultiplier=1-speed}else if(delta<0){scaleMultiplier=1+speed}return scaleMultiplier}function triggerPanStart(){if(!panstartFired){triggerEvent("panstart");panstartFired=true;smoothScroll.start()}}function triggerPanEnd(){if(panstartFired){if(!multitouch)smoothScroll.stop();triggerEvent("panend")}}function triggerEvent(name){api.fire(name,api)}}function noop(){}function validateBounds(bounds){var boundsType=typeof bounds;if(boundsType==="undefined"||boundsType==="boolean")return;var validBounds=isNumber(bounds.left)&&isNumber(bounds.top)&&isNumber(bounds.bottom)&&isNumber(bounds.right);if(!validBounds)throw new Error("Bounds object is not valid. It can be: "+"undefined, boolean (true|false) or an object {left, top, right, bottom}")}function isNumber(x){return Number.isFinite(x)}function isNaN(value){if(Number.isNaN){return Number.isNaN(value)}return value!==value}function rigidScroll(){return{start:noop,stop:noop,cancel:noop}}function autoRun(){if(typeof document==="undefined")return;var scripts=document.getElementsByTagName("script");if(!scripts)return;var panzoomScript;Array.from(scripts).forEach(function(x){if(x.src&&x.src.match(/\bpanzoom(\.min)?\.js/)){panzoomScript=x}});if(!panzoomScript)return;var query=panzoomScript.getAttribute("query");if(!query)return;var globalName=panzoomScript.getAttribute("name")||"pz";var started=Date.now();tryAttach();function tryAttach(){var el=document.querySelector(query);if(!el){var now=Date.now();var elapsed=now-started;if(elapsed<2e3){setTimeout(tryAttach,100);return}console.error("Cannot find the panzoom element",globalName);return}var options=collectOptions(panzoomScript);console.log(options);window[globalName]=createPanZoom(el,options)}function collectOptions(script){var attrs=script.attributes;var options={};for(var i=0;iminVelocity){ax=amplitude*vx;targetX+=ax}if(vy<-minVelocity||vy>minVelocity){ay=amplitude*vy;targetY+=ay}raf=window.requestAnimationFrame(autoScroll)}function autoScroll(){var elapsed=Date.now()-timestamp;var moving=false;var dx=0;var dy=0;if(ax){dx=-ax*Math.exp(-elapsed/timeConstant);if(dx>.5||dx<-.5)moving=true;else dx=ax=0}if(ay){dy=-ay*Math.exp(-elapsed/timeConstant);if(dy>.5||dy<-.5)moving=true;else dy=ay=0}if(moving){scroll(targetX+dx,targetY+dy);raf=window.requestAnimationFrame(autoScroll)}}}},{}],4:[function(require,module,exports){module.exports=makeSvgController;var Transform=require("./transform.js");function makeSvgController(svgElement){var elementValid=svgElement instanceof SVGElement;if(!elementValid){throw new Error("svg element is required for svg.panzoom to work")}var owner=svgElement.ownerSVGElement;if(!owner){throw new Error("Do not apply panzoom to the root element. "+"Use its child instead (e.g. ). "+"As of March 2016 only FireFox supported transform on the root element")}owner.setAttribute("tabindex",1);var api={getBBox:getBBox,getScreenCTM:getScreenCTM,getOwner:getOwner,applyTransform:applyTransform,initTransform:initTransform,getTransform:getTransform};return api;function getOwner(){return owner}function getBBox(){var bbox=svgElement.getBBox();return{left:bbox.x,top:bbox.y,width:bbox.width,height:bbox.height}}function getScreenCTM(){return owner.getScreenCTM()}function initTransform(transform){var screenCTM=svgElement.getScreenCTM();transform.x=screenCTM.e;transform.y=screenCTM.f;transform.scale=screenCTM.a;owner.removeAttributeNS(null,"viewBox")}function applyTransform(transform){svgElement.setAttribute("transform","matrix("+transform.scale+" 0 0 "+transform.scale+" "+transform.x+" "+transform.y+")")}function getTransform(){var transformStyle=svgElement.getAttribute("transform");var transform=new Transform;if(!transformStyle.startsWith("matrix(")){return transform}var transformArray=transformStyle.substring(transformStyle.indexOf("(")+1,transformStyle.lastIndexOf(")")).split(" ");transform.x=parseFloat(transformArray[4]);transform.y=parseFloat(transformArray[5]);transform.scale=parseFloat(transformArray[0]);return transform}}},{"./transform.js":6}],5:[function(require,module,exports){module.exports=createTextSelectionInterceptor;function createTextSelectionInterceptor(){var dragObject;var prevSelectStart;var prevDragStart;return{capture:capture,release:release};function capture(domObject){prevSelectStart=window.document.onselectstart;prevDragStart=window.document.ondragstart;window.document.onselectstart=disabled;dragObject=domObject;dragObject.ondragstart=disabled}function release(){window.document.onselectstart=prevSelectStart;if(dragObject)dragObject.ondragstart=prevDragStart}}function disabled(e){e.stopPropagation();return false}},{}],6:[function(require,module,exports){module.exports=Transform;function Transform(){this.x=0;this.y=0;this.scale=1}},{}],7:[function(require,module,exports){var BezierEasing=require("bezier-easing");var animations={ease:BezierEasing(.25,.1,.25,1),easeIn:BezierEasing(.42,0,1,1),easeOut:BezierEasing(0,0,.58,1),easeInOut:BezierEasing(.42,0,.58,1),linear:BezierEasing(0,0,1,1)};module.exports=animate;module.exports.makeAggregateRaf=makeAggregateRaf;module.exports.sharedScheduler=makeAggregateRaf();function animate(source,target,options){var start=Object.create(null);var diff=Object.create(null);options=options||{};var easing=typeof options.easing==="function"?options.easing:animations[options.easing];if(!easing){if(options.easing){console.warn("Unknown easing function in amator: "+options.easing)}easing=animations.ease}var step=typeof options.step==="function"?options.step:noop;var done=typeof options.done==="function"?options.done:noop;var scheduler=getScheduler(options.scheduler);var keys=Object.keys(target);keys.forEach(function(key){start[key]=source[key];diff[key]=target[key]-source[key]});var durationInMs=typeof options.duration==="number"?options.duration:400;var durationInFrames=Math.max(1,durationInMs*.06);var previousAnimationId;var frame=0;previousAnimationId=scheduler.next(loop);return{cancel:cancel};function cancel(){scheduler.cancel(previousAnimationId);previousAnimationId=0}function loop(){var t=easing(frame/durationInFrames);frame+=1;setValues(t);if(frame<=durationInFrames){previousAnimationId=scheduler.next(loop);step(source)}else{previousAnimationId=0;setTimeout(function(){done(source)},0)}}function setValues(t){keys.forEach(function(key){source[key]=diff[key]*t+start[key]})}}function noop(){}function getScheduler(scheduler){if(!scheduler){var canRaf=typeof window!=="undefined"&&window.requestAnimationFrame;return canRaf?rafScheduler():timeoutScheduler()}if(typeof scheduler.next!=="function")throw new Error("Scheduler is supposed to have next(cb) function");if(typeof scheduler.cancel!=="function")throw new Error("Scheduler is supposed to have cancel(handle) function");return scheduler}function rafScheduler(){return{next:window.requestAnimationFrame.bind(window),cancel:window.cancelAnimationFrame.bind(window)}}function timeoutScheduler(){return{next:function(cb){return setTimeout(cb,1e3/60)},cancel:function(id){return clearTimeout(id)}}}function makeAggregateRaf(){var frontBuffer=new Set;var backBuffer=new Set;var frameToken=0;return{next:next,cancel:next,clearAll:clearAll};function clearAll(){frontBuffer.clear();backBuffer.clear();cancelAnimationFrame(frameToken);frameToken=0}function next(callback){backBuffer.add(callback);renderNextFrame()}function renderNextFrame(){if(!frameToken)frameToken=requestAnimationFrame(renderFrame)}function renderFrame(){frameToken=0;var t=backBuffer;backBuffer=frontBuffer;frontBuffer=t;frontBuffer.forEach(function(callback){callback()});frontBuffer.clear()}function cancel(callback){backBuffer.delete(callback)}}},{"bezier-easing":8}],8:[function(require,module,exports){var NEWTON_ITERATIONS=4;var NEWTON_MIN_SLOPE=.001;var SUBDIVISION_PRECISION=1e-7;var SUBDIVISION_MAX_ITERATIONS=10;var kSplineTableSize=11;var kSampleStepSize=1/(kSplineTableSize-1);var float32ArraySupported=typeof Float32Array==="function";function A(aA1,aA2){return 1-3*aA2+3*aA1}function B(aA1,aA2){return 3*aA2-6*aA1}function C(aA1){return 3*aA1}function calcBezier(aT,aA1,aA2){return((A(aA1,aA2)*aT+B(aA1,aA2))*aT+C(aA1))*aT}function getSlope(aT,aA1,aA2){return 3*A(aA1,aA2)*aT*aT+2*B(aA1,aA2)*aT+C(aA1)}function binarySubdivide(aX,aA,aB,mX1,mX2){var currentX,currentT,i=0;do{currentT=aA+(aB-aA)/2;currentX=calcBezier(currentT,mX1,mX2)-aX;if(currentX>0){aB=currentT}else{aA=currentT}}while(Math.abs(currentX)>SUBDIVISION_PRECISION&&++i=NEWTON_MIN_SLOPE){return newtonRaphsonIterate(aX,guessForT,mX1,mX2)}else if(initialSlope===0){return guessForT}else{return binarySubdivide(aX,intervalStart,intervalStart+kSampleStepSize,mX1,mX2)}}return function BezierEasing(x){if(x===0){return 0}if(x===1){return 1}return calcBezier(getTForX(x),mY1,mY2)}}},{}],9:[function(require,module,exports){module.exports=function(subject){validateSubject(subject);var eventsStorage=createEventsStorage(subject);subject.on=eventsStorage.on;subject.off=eventsStorage.off;subject.fire=eventsStorage.fire;return subject};function createEventsStorage(subject){var registeredEvents=Object.create(null);return{on:function(eventName,callback,ctx){if(typeof callback!=="function"){throw new Error("callback is expected to be a function")}var handlers=registeredEvents[eventName];if(!handlers){handlers=registeredEvents[eventName]=[]}handlers.push({callback:callback,ctx:ctx});return subject},off:function(eventName,callback){var wantToRemoveAll=typeof eventName==="undefined";if(wantToRemoveAll){registeredEvents=Object.create(null);return subject}if(registeredEvents[eventName]){var deleteAllCallbacksForEvent=typeof callback!=="function";if(deleteAllCallbacksForEvent){delete registeredEvents[eventName]}else{var callbacks=registeredEvents[eventName];for(var i=0;i1){fireArguments=Array.prototype.splice.call(arguments,1)}for(var i=0;i