diff --git a/demo/bordered.html b/demo/bordered.html new file mode 100644 index 0000000..1ea48d4 --- /dev/null +++ b/demo/bordered.html @@ -0,0 +1,53 @@ + + + + + + + + + + + Bordered panzoom demo + + + +
+ sample-image +
+ + + + GitHub + + diff --git a/dist/panzoom.js b/dist/panzoom.js index 3ed6a77..1472ace 100644 --- a/dist/panzoom.js +++ b/dist/panzoom.js @@ -64,6 +64,10 @@ function createPanZoom(domElement, options) { var maxZoom = typeof options.maxZoom === 'number' ? options.maxZoom : Number.POSITIVE_INFINITY; var minZoom = typeof options.minZoom === 'number' ? options.minZoom : 0; + if (options.bordered && (!minZoom || minZoom < 1)) { + throw new Error('Cannot create bordered panzoom with minZoom less than 1'); + } + var boundsPadding = typeof options.boundsPadding === 'number' ? options.boundsPadding : 0.05; var zoomDoubleClickSpeed = typeof options.zoomDoubleClickSpeed === 'number' ? options.zoomDoubleClickSpeed : defaultDoubleTapZoomSpeed; var beforeWheel = options.beforeWheel || noop; @@ -178,6 +182,48 @@ function createPanZoom(domElement, options) { return paused; } + function resolveTransformScale(scale) { + if (minZoom) { + scale = Math.max(scale, minZoom) + } + + return scale; + } + + function setTransformScale(scale) { + transform.scale = resolveTransformScale(scale); + } + + function setTransformX(x, scale = null) { + scale = scale || transform.scale; + scale = resolveTransformScale(scale); + + if (options.bordered) { + if (x > 0) { + x = 0; + } else { + x = Math.max(x, -(domElement.clientWidth * scale - domElement.clientWidth)) + } + } + + transform.x = x; + } + + function setTransformY(y, scale = null) { + scale = scale || transform.scale; + scale = resolveTransformScale(scale); + + if (options.bordered) { + if (y > 0) { + y = 0; + } else { + y = Math.max(y, -(domElement.clientHeight * scale - domElement.clientHeight)) + } + } + + transform.y = y; + } + function showRectangle(rect) { // TODO: this duplicates autocenter. I think autocenter should go. var clientRect = owner.getBoundingClientRect(); @@ -192,9 +238,9 @@ function createPanZoom(domElement, options) { 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; + setTransformX(-(rect.left + rectWidth / 2) * scale + size.x / 2); + setTransformY(-(rect.top + rectHeight / 2) * scale + size.y / 2); + setTransformScale(scale); } function transformToScreen(x, y) { @@ -241,9 +287,9 @@ function createPanZoom(domElement, options) { 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; + setTransformX(-(bbox.left + bbox.width / 2) * scale + w / 2 + left, scale); + setTransformY(-(bbox.top + bbox.height / 2) * scale + h / 2 + top, scale); + setTransformScale(scale); } function getTransformModel() { @@ -294,8 +340,8 @@ function createPanZoom(domElement, options) { } function moveTo(x, y) { - transform.x = x; - transform.y = y; + setTransformX(x); + setTransformY(y); keepTransformInsideBounds(); @@ -412,16 +458,16 @@ function createPanZoom(domElement, options) { var size = transformToScreen(clientX, clientY); - transform.x = size.x - ratio * (size.x - transform.x); - transform.y = size.y - ratio * (size.y - transform.y); + setTransformX(size.x - ratio * (size.x - transform.x), newScale); + setTransformY(size.y - ratio * (size.y - transform.y), newScale); // TODO: https://github.com/anvaka/panzoom/issues/112 if (bounds && boundsPadding === 1 && minZoom === 1) { - transform.scale *= ratio; + setTransformScale(transform.scale * ratio); keepTransformInsideBounds(); } else { var transformAdjusted = keepTransformInsideBounds(); - if (!transformAdjusted) transform.scale *= ratio; + if (!transformAdjusted) setTransformScale(transform.scale * ratio); } triggerEvent('zoom'); @@ -1327,12 +1373,12 @@ function makeSvgController(svgElement, options) { } function getBBox() { - var bbox = svgElement.getBBox(); + var boundingBox = svgElement.getBBox(); return { - left: bbox.x, - top: bbox.y, - width: bbox.width, - height: bbox.height, + left: boundingBox.x, + top: boundingBox.y, + width: boundingBox.width, + height: boundingBox.height, }; } @@ -1574,7 +1620,7 @@ function makeAggregateRaf() { var t = backBuffer; backBuffer = frontBuffer; - frontBuffer = t; + frontBuffer = t; frontBuffer.forEach(function(callback) { callback(); diff --git a/dist/panzoom.min.js b/dist/panzoom.min.js index a8984e4..ee387f4 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);if(bounds&&boundsPadding===1&&minZoom===1){transform.scale*=ratio;keepTransformInsideBounds()}else{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 smoothMoveTo(x,y){internalMoveBy(x-transform.x,y-transform.y,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,{passive:false});owner.addEventListener("dblclick",onDoubleClick,{passive:false});owner.addEventListener("touchstart",onTouch,{passive:false});owner.addEventListener("keydown",onKeyDown,{passive:false});wheel.addWheelListener(owner,onMouseWheel,{passive:false});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();textSelection.release();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*100);var offset=transformOrigin?getTransformOriginOffset():midPoint();publicZoomTo(offset.x,offset.y,scaleMultiplier)}}function midPoint(){var ownerRect=owner.getBoundingClientRect();return{x:ownerRect.width/2,y:ownerRect.height/2}}function onTouch(e){beforeTouch(e);clearPendingClickEventTimeout();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){clearPendingClickEventTimeout();if(options.onDoubleClick&&!options.onDoubleClick(e)){return}e.preventDefault();e.stopPropagation()}function handleSingleFingerTouch(e){lastTouchStartTime=new Date;var touch=e.touches[0];var offset=getOffsetXY(touch);lastSingleFingerOffset=offset;var point=transformToScreen(offset.x,offset.y);mouseX=point.x;mouseY=point.y;clickX=mouseX;clickY=mouseY;smoothScroll.cancel();startTouchListenerIfNeeded()}function startTouchListenerIfNeeded(){if(touchInProgress){return}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 point=transformToScreen(offset.x,offset.y);var dx=point.x-mouseX;var dy=point.y-mouseY;if(dx!==0&&dy!==0){triggerPanStart()}mouseX=point.x;mouseY=point.y;internalMoveBy(dx,dy)}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+(currentPinchLength/pinchZoomLength-1)*pinchSpeed;var firstTouchPoint=getOffsetXY(t1);var secondTouchPoint=getOffsetXY(t2);mouseX=(firstTouchPoint.x+secondTouchPoint.x)/2;mouseY=(firstTouchPoint.y+secondTouchPoint.y)/2;if(transformOrigin){var offset=getTransformOriginOffset();mouseX=offset.x;mouseY=offset.y}publicZoomTo(mouseX,mouseY,scaleMultiplier);pinchZoomLength=currentPinchLength;e.stopPropagation();e.preventDefault()}}function clearPendingClickEventTimeout(){if(pendingClickEventTimeout){clearTimeout(pendingClickEventTimeout);pendingClickEventTimeout=0}}function handlePotentialClickEvent(e){if(!options.onClick)return;clearPendingClickEventTimeout();var dx=mouseX-clickX;var dy=mouseY-clickY;var l=Math.sqrt(dx*dx+dy*dy);if(l>5)return;pendingClickEventTimeout=setTimeout(function(){pendingClickEventTimeout=0;options.onClick(e)},doubleTapSpeedInMS)}function handleTouchEnd(e){clearPendingClickEventTimeout();if(e.touches.length>0){var offset=getOffsetXY(e.touches[0]);var point=transformToScreen(offset.x,offset.y);mouseX=point.x;mouseY=point.y}else{var now=new Date;if(now-lastTouchEndTime0)delta*=100;var scaleMultiplier=getScaleMultiplier(delta);if(scaleMultiplier!==1){var offset=transformOrigin?getTransformOriginOffset():getOffsetXY(e);publicZoomTo(offset.x,offset.y,scaleMultiplier);e.preventDefault()}}function getOffsetXY(e){var offsetX,offsetY;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)},done:triggerZoomEnd})}function smoothZoomAbs(clientX,clientY,toScaleValue){var fromValue=transform.scale;var from={scale:fromValue};var to={scale:toScaleValue};smoothScroll.cancel();cancelZoomAnimation();zoomToAnimation=animate(from,to,{step:function(v){zoomAbs(clientX,clientY,v.scale)}})}function getTransformOriginOffset(){var ownerRect=owner.getBoundingClientRect();return{x:ownerRect.width*transformOrigin.x,y:ownerRect.height*transformOrigin.y}}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 sign=Math.sign(delta);var deltaAdjustedSpeed=Math.min(.25,Math.abs(speed*delta/128));return 1-sign*deltaAdjustedSpeed}function triggerPanStart(){if(!panstartFired){triggerEvent("panstart");panstartFired=true;smoothScroll.start()}}function triggerPanEnd(){if(panstartFired){if(!multiTouch)smoothScroll.stop();triggerEvent("panend")}}function triggerZoomEnd(){triggerEvent("zoomend")}function triggerEvent(name){api.fire(name,api)}}function parseTransformOrigin(options){if(!options)return;if(typeof options==="object"){if(!isNumber(options.x)||!isNumber(options.y))failTransformOrigin(options);return options}failTransformOrigin()}function failTransformOrigin(options){console.error(options);throw new Error(["Cannot parse transform origin.","Some good examples:",' "center center" can be achieved with {x: 0.5, y: 0.5}',' "top center" can be achieved with {x: 0.5, y: 0}',' "bottom right" can be achieved with {x: 1, y: 1}'].join("\n"))}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;for(var i=0;iminVelocity){ax=amplitude*vx;targetX+=ax}if(vy<-minVelocity||vy>minVelocity){ay=amplitude*vy;targetY+=ay}raf=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=requestAnimationFrame(autoScroll)}}}function getCancelAnimationFrame(){if(typeof cancelAnimationFrame==="function")return cancelAnimationFrame;return clearTimeout}function getRequestAnimationFrame(){if(typeof requestAnimationFrame==="function")return requestAnimationFrame;return function(handler){return setTimeout(handler,16)}}},{}],3:[function(require,module,exports){module.exports=makeDomController;module.exports.canAttach=isDomElement;function makeDomController(domElement,options){var elementValid=isDomElement(domElement);if(!elementValid){throw new Error("panzoom requires DOM element to be attached to the DOM tree")}var owner=domElement.parentElement;domElement.scrollTop=0;if(!options.disableKeyboardInteraction){owner.setAttribute("tabindex",0)}var api={getBBox:getBBox,getOwner:getOwner,applyTransform:applyTransform};return api;function getOwner(){return owner}function getBBox(){return{left:0,top:0,width:domElement.clientWidth,height:domElement.clientHeight}}function applyTransform(transform){domElement.style.transformOrigin="0 0 0";domElement.style.transform="matrix("+transform.scale+", 0, 0, "+transform.scale+", "+transform.x+", "+transform.y+")"}}function isDomElement(element){return element&&element.parentElement&&element.style}},{}],4:[function(require,module,exports){module.exports=makeSvgController;module.exports.canAttach=isSVGElement;function makeSvgController(svgElement,options){if(!isSVGElement(svgElement)){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")}if(!options.disableKeyboardInteraction){owner.setAttribute("tabindex",0)}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(){var ctm=owner.getCTM();if(!ctm){return owner.getScreenCTM()}return ctm}function initTransform(transform){var screenCTM=svgElement.getCTM();if(screenCTM===null){screenCTM=document.createElementNS("http://www.w3.org/2000/svg","svg").createSVGMatrix()}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 isSVGElement(element){return element&&element.ownerSVGElement&&element.getCTM}},{}],5:[function(require,module,exports){module.exports=makeTextSelectionInterceptor;function makeTextSelectionInterceptor(useFake){if(useFake){return{capture:noop,release:noop}}var dragObject;var prevSelectStart;var prevDragStart;var wasCaptured=false;return{capture:capture,release:release};function capture(domObject){wasCaptured=true;prevSelectStart=window.document.onselectstart;prevDragStart=window.document.ondragstart;window.document.onselectstart=disabled;dragObject=domObject;dragObject.ondragstart=disabled}function release(){if(!wasCaptured)return;wasCaptured=false;window.document.onselectstart=prevSelectStart;if(dragObject)dragObject.ondragstart=prevDragStart}}function disabled(e){e.stopPropagation();return false}function noop(){}},{}],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 eventify(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){x=0}else{x=Math.max(x,-(domElement.clientWidth*scale-domElement.clientWidth))}}transform.x=x}function setTransformY(y,scale=null){scale=scale||transform.scale;scale=resolveTransformScale(scale);if(options.bordered){if(y>0){y=0}else{y=Math.max(y,-(domElement.clientHeight*scale-domElement.clientHeight))}}transform.y=y}function showRectangle(rect){var clientRect=owner.getBoundingClientRect();var size=transformToScreen(clientRect.width,clientRect.height);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);setTransformX(-(rect.left+rectWidth/2)*scale+size.x/2);setTransformY(-(rect.top+rectHeight/2)*scale+size.y/2);setTransformScale(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;var h;var left=0;var top=0;var sceneBoundingBox=getBoundingBox();if(sceneBoundingBox){left=sceneBoundingBox.left;top=sceneBoundingBox.top;w=sceneBoundingBox.right-sceneBoundingBox.left;h=sceneBoundingBox.bottom-sceneBoundingBox.top}else{var ownerRect=owner.getBoundingClientRect();w=ownerRect.width;h=ownerRect.height}var bbox=panController.getBBox();if(bbox.width===0||bbox.height===0){return}var dh=h/bbox.height;var dw=w/bbox.width;var scale=Math.min(dw,dh);setTransformX(-(bbox.left+bbox.width/2)*scale+w/2+left,scale);setTransformY(-(bbox.top+bbox.height/2)*scale+h/2+top,scale);setTransformScale(scale)}function getTransformModel(){return transform}function getMinZoom(){return minZoom}function setMinZoom(newMinZoom){minZoom=newMinZoom}function getMaxZoom(){return maxZoom}function setMaxZoom(newMaxZoom){maxZoom=newMaxZoom}function getTransformOrigin(){return transformOrigin}function setTransformOrigin(newTransformOrigin){transformOrigin=parseTransformOrigin(newTransformOrigin)}function getZoomSpeed(){return speed}function setZoomSpeed(newSpeed){if(!Number.isFinite(newSpeed)){throw new Error("Zoom speed should be a number")}speed=newSpeed}function getPoint(){return{x:transform.x,y:transform.y}}function moveTo(x,y){setTransformX(x);setTransformY(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}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);setTransformX(size.x-ratio*(size.x-transform.x),newScale);setTransformY(size.y-ratio*(size.y-transform.y),newScale);if(bounds&&boundsPadding===1&&minZoom===1){setTransformScale(transform.scale*ratio);keepTransformInsideBounds()}else{var transformAdjusted=keepTransformInsideBounds();if(!transformAdjusted)setTransformScale(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 smoothMoveTo(x,y){internalMoveBy(x-transform.x,y-transform.y,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,{passive:false});owner.addEventListener("dblclick",onDoubleClick,{passive:false});owner.addEventListener("touchstart",onTouch,{passive:false});owner.addEventListener("keydown",onKeyDown,{passive:false});wheel.addWheelListener(owner,onMouseWheel,{passive:false});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();textSelection.release();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*100);var offset=transformOrigin?getTransformOriginOffset():midPoint();publicZoomTo(offset.x,offset.y,scaleMultiplier)}}function midPoint(){var ownerRect=owner.getBoundingClientRect();return{x:ownerRect.width/2,y:ownerRect.height/2}}function onTouch(e){beforeTouch(e);clearPendingClickEventTimeout();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){clearPendingClickEventTimeout();if(options.onDoubleClick&&!options.onDoubleClick(e)){return}e.preventDefault();e.stopPropagation()}function handleSingleFingerTouch(e){lastTouchStartTime=new Date;var touch=e.touches[0];var offset=getOffsetXY(touch);lastSingleFingerOffset=offset;var point=transformToScreen(offset.x,offset.y);mouseX=point.x;mouseY=point.y;clickX=mouseX;clickY=mouseY;smoothScroll.cancel();startTouchListenerIfNeeded()}function startTouchListenerIfNeeded(){if(touchInProgress){return}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 point=transformToScreen(offset.x,offset.y);var dx=point.x-mouseX;var dy=point.y-mouseY;if(dx!==0&&dy!==0){triggerPanStart()}mouseX=point.x;mouseY=point.y;internalMoveBy(dx,dy)}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+(currentPinchLength/pinchZoomLength-1)*pinchSpeed;var firstTouchPoint=getOffsetXY(t1);var secondTouchPoint=getOffsetXY(t2);mouseX=(firstTouchPoint.x+secondTouchPoint.x)/2;mouseY=(firstTouchPoint.y+secondTouchPoint.y)/2;if(transformOrigin){var offset=getTransformOriginOffset();mouseX=offset.x;mouseY=offset.y}publicZoomTo(mouseX,mouseY,scaleMultiplier);pinchZoomLength=currentPinchLength;e.stopPropagation();e.preventDefault()}}function clearPendingClickEventTimeout(){if(pendingClickEventTimeout){clearTimeout(pendingClickEventTimeout);pendingClickEventTimeout=0}}function handlePotentialClickEvent(e){if(!options.onClick)return;clearPendingClickEventTimeout();var dx=mouseX-clickX;var dy=mouseY-clickY;var l=Math.sqrt(dx*dx+dy*dy);if(l>5)return;pendingClickEventTimeout=setTimeout(function(){pendingClickEventTimeout=0;options.onClick(e)},doubleTapSpeedInMS)}function handleTouchEnd(e){clearPendingClickEventTimeout();if(e.touches.length>0){var offset=getOffsetXY(e.touches[0]);var point=transformToScreen(offset.x,offset.y);mouseX=point.x;mouseY=point.y}else{var now=new Date;if(now-lastTouchEndTime0)delta*=100;var scaleMultiplier=getScaleMultiplier(delta);if(scaleMultiplier!==1){var offset=transformOrigin?getTransformOriginOffset():getOffsetXY(e);publicZoomTo(offset.x,offset.y,scaleMultiplier);e.preventDefault()}}function getOffsetXY(e){var offsetX,offsetY;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)},done:triggerZoomEnd})}function smoothZoomAbs(clientX,clientY,toScaleValue){var fromValue=transform.scale;var from={scale:fromValue};var to={scale:toScaleValue};smoothScroll.cancel();cancelZoomAnimation();zoomToAnimation=animate(from,to,{step:function(v){zoomAbs(clientX,clientY,v.scale)}})}function getTransformOriginOffset(){var ownerRect=owner.getBoundingClientRect();return{x:ownerRect.width*transformOrigin.x,y:ownerRect.height*transformOrigin.y}}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 sign=Math.sign(delta);var deltaAdjustedSpeed=Math.min(.25,Math.abs(speed*delta/128));return 1-sign*deltaAdjustedSpeed}function triggerPanStart(){if(!panstartFired){triggerEvent("panstart");panstartFired=true;smoothScroll.start()}}function triggerPanEnd(){if(panstartFired){if(!multiTouch)smoothScroll.stop();triggerEvent("panend")}}function triggerZoomEnd(){triggerEvent("zoomend")}function triggerEvent(name){api.fire(name,api)}}function parseTransformOrigin(options){if(!options)return;if(typeof options==="object"){if(!isNumber(options.x)||!isNumber(options.y))failTransformOrigin(options);return options}failTransformOrigin()}function failTransformOrigin(options){console.error(options);throw new Error(["Cannot parse transform origin.","Some good examples:",' "center center" can be achieved with {x: 0.5, y: 0.5}',' "top center" can be achieved with {x: 0.5, y: 0}',' "bottom right" can be achieved with {x: 1, y: 1}'].join("\n"))}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;for(var i=0;iminVelocity){ax=amplitude*vx;targetX+=ax}if(vy<-minVelocity||vy>minVelocity){ay=amplitude*vy;targetY+=ay}raf=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=requestAnimationFrame(autoScroll)}}}function getCancelAnimationFrame(){if(typeof cancelAnimationFrame==="function")return cancelAnimationFrame;return clearTimeout}function getRequestAnimationFrame(){if(typeof requestAnimationFrame==="function")return requestAnimationFrame;return function(handler){return setTimeout(handler,16)}}},{}],3:[function(require,module,exports){module.exports=makeDomController;module.exports.canAttach=isDomElement;function makeDomController(domElement,options){var elementValid=isDomElement(domElement);if(!elementValid){throw new Error("panzoom requires DOM element to be attached to the DOM tree")}var owner=domElement.parentElement;domElement.scrollTop=0;if(!options.disableKeyboardInteraction){owner.setAttribute("tabindex",0)}var api={getBBox:getBBox,getOwner:getOwner,applyTransform:applyTransform};return api;function getOwner(){return owner}function getBBox(){return{left:0,top:0,width:domElement.clientWidth,height:domElement.clientHeight}}function applyTransform(transform){domElement.style.transformOrigin="0 0 0";domElement.style.transform="matrix("+transform.scale+", 0, 0, "+transform.scale+", "+transform.x+", "+transform.y+")"}}function isDomElement(element){return element&&element.parentElement&&element.style}},{}],4:[function(require,module,exports){module.exports=makeSvgController;module.exports.canAttach=isSVGElement;function makeSvgController(svgElement,options){if(!isSVGElement(svgElement)){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")}if(!options.disableKeyboardInteraction){owner.setAttribute("tabindex",0)}var api={getBBox:getBBox,getScreenCTM:getScreenCTM,getOwner:getOwner,applyTransform:applyTransform,initTransform:initTransform};return api;function getOwner(){return owner}function getBBox(){var boundingBox=svgElement.getBBox();return{left:boundingBox.x,top:boundingBox.y,width:boundingBox.width,height:boundingBox.height}}function getScreenCTM(){var ctm=owner.getCTM();if(!ctm){return owner.getScreenCTM()}return ctm}function initTransform(transform){var screenCTM=svgElement.getCTM();if(screenCTM===null){screenCTM=document.createElementNS("http://www.w3.org/2000/svg","svg").createSVGMatrix()}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 isSVGElement(element){return element&&element.ownerSVGElement&&element.getCTM}},{}],5:[function(require,module,exports){module.exports=makeTextSelectionInterceptor;function makeTextSelectionInterceptor(useFake){if(useFake){return{capture:noop,release:noop}}var dragObject;var prevSelectStart;var prevDragStart;var wasCaptured=false;return{capture:capture,release:release};function capture(domObject){wasCaptured=true;prevSelectStart=window.document.onselectstart;prevDragStart=window.document.ondragstart;window.document.onselectstart=disabled;dragObject=domObject;dragObject.ondragstart=disabled}function release(){if(!wasCaptured)return;wasCaptured=false;window.document.onselectstart=prevSelectStart;if(dragObject)dragObject.ondragstart=prevDragStart}}function disabled(e){e.stopPropagation();return false}function noop(){}},{}],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 eventify(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 0) { + x = 0; + } else { + x = Math.max(x, -(domElement.clientWidth * scale - domElement.clientWidth)) + } + } + + transform.x = x; + } + + function setTransformY(y, scale = null) { + scale = scale || transform.scale; + scale = resolveTransformScale(scale); + + if (options.bordered) { + if (y > 0) { + y = 0; + } else { + y = Math.max(y, -(domElement.clientHeight * scale - domElement.clientHeight)) + } + } + + transform.y = y; + } + function showRectangle(rect) { // TODO: this duplicates autocenter. I think autocenter should go. var clientRect = owner.getBoundingClientRect(); @@ -191,9 +237,9 @@ function createPanZoom(domElement, options) { 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; + setTransformX(-(rect.left + rectWidth / 2) * scale + size.x / 2); + setTransformY(-(rect.top + rectHeight / 2) * scale + size.y / 2); + setTransformScale(scale); } function transformToScreen(x, y) { @@ -240,9 +286,9 @@ function createPanZoom(domElement, options) { 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; + setTransformX(-(bbox.left + bbox.width / 2) * scale + w / 2 + left, scale); + setTransformY(-(bbox.top + bbox.height / 2) * scale + h / 2 + top, scale); + setTransformScale(scale); } function getTransformModel() { @@ -293,8 +339,8 @@ function createPanZoom(domElement, options) { } function moveTo(x, y) { - transform.x = x; - transform.y = y; + setTransformX(x); + setTransformY(y); keepTransformInsideBounds(); @@ -411,16 +457,16 @@ function createPanZoom(domElement, options) { var size = transformToScreen(clientX, clientY); - transform.x = size.x - ratio * (size.x - transform.x); - transform.y = size.y - ratio * (size.y - transform.y); + setTransformX(size.x - ratio * (size.x - transform.x), newScale); + setTransformY(size.y - ratio * (size.y - transform.y), newScale); // TODO: https://github.com/anvaka/panzoom/issues/112 if (bounds && boundsPadding === 1 && minZoom === 1) { - transform.scale *= ratio; + setTransformScale(transform.scale * ratio); keepTransformInsideBounds(); } else { var transformAdjusted = keepTransformInsideBounds(); - if (!transformAdjusted) transform.scale *= ratio; + if (!transformAdjusted) setTransformScale(transform.scale * ratio); } triggerEvent('zoom');