| /* | |
| Flot plugin for adding panning and zooming capabilities to a plot. | |
| The default behaviour is double click and scrollwheel up/down to zoom | |
| in, drag to pan. The plugin defines plot.zoom({ center }), | |
| plot.zoomOut() and plot.pan(offset) so you easily can add custom | |
| controls. It also fires a "plotpan" and "plotzoom" event when | |
| something happens, useful for synchronizing plots. | |
| Options: | |
| zoom: { | |
| interactive: false | |
| trigger: "dblclick" // or "click" for single click | |
| amount: 1.5 // 2 = 200% (zoom in), 0.5 = 50% (zoom out) | |
| } | |
| pan: { | |
| interactive: false | |
| cursor: "move" // CSS mouse cursor value used when dragging, e.g. "pointer" | |
| frameRate: 20 | |
| } | |
| xaxis, yaxis, x2axis, y2axis: { | |
| zoomRange: null // or [number, number] (min range, max range) or false | |
| panRange: null // or [number, number] (min, max) or false | |
| } | |
| "interactive" enables the built-in drag/click behaviour. If you enable | |
| interactive for pan, then you'll have a basic plot that supports | |
| moving around; the same for zoom. | |
| "amount" specifies the default amount to zoom in (so 1.5 = 150%) | |
| relative to the current viewport. | |
| "cursor" is a standard CSS mouse cursor string used for visual | |
| feedback to the user when dragging. | |
| "frameRate" specifies the maximum number of times per second the plot | |
| will update itself while the user is panning around on it (set to null | |
| to disable intermediate pans, the plot will then not update until the | |
| mouse button is released). | |
| "zoomRange" is the interval in which zooming can happen, e.g. with | |
| zoomRange: [1, 100] the zoom will never scale the axis so that the | |
| difference between min and max is smaller than 1 or larger than 100. | |
| You can set either end to null to ignore, e.g. [1, null]. If you set | |
| zoomRange to false, zooming on that axis will be disabled. | |
| "panRange" confines the panning to stay within a range, e.g. with | |
| panRange: [-10, 20] panning stops at -10 in one end and at 20 in the | |
| other. Either can be null, e.g. [-10, null]. If you set | |
| panRange to false, panning on that axis will be disabled. | |
| Example API usage: | |
| plot = $.plot(...); | |
| // zoom default amount in on the pixel (10, 20) | |
| plot.zoom({ center: { left: 10, top: 20 } }); | |
| // zoom out again | |
| plot.zoomOut({ center: { left: 10, top: 20 } }); | |
| // zoom 200% in on the pixel (10, 20) | |
| plot.zoom({ amount: 2, center: { left: 10, top: 20 } }); | |
| // pan 100 pixels to the left and 20 down | |
| plot.pan({ left: -100, top: 20 }) | |
| Here, "center" specifies where the center of the zooming should | |
| happen. Note that this is defined in pixel space, not the space of the | |
| data points (you can use the p2c helpers on the axes in Flot to help | |
| you convert between these). | |
| "amount" is the amount to zoom the viewport relative to the current | |
| range, so 1 is 100% (i.e. no change), 1.5 is 150% (zoom in), 0.7 is | |
| 70% (zoom out). You can set the default in the options. | |
| */ | |
| // First two dependencies, jquery.event.drag.js and | |
| // jquery.mousewheel.js, we put them inline here to save people the | |
| // effort of downloading them. | |
| /* | |
| jquery.event.drag.js ~ v1.5 ~ Copyright (c) 2008, Three Dub Media (http://threedubmedia.com) | |
| Licensed under the MIT License ~ http://threedubmedia.googlecode.com/files/MIT-LICENSE.txt | |
| */ | |
| (function(E){E.fn.drag=function(L,K,J){if(K){this.bind("dragstart",L)}if(J){this.bind("dragend",J)}return !L?this.trigger("drag"):this.bind("drag",K?K:L)};var A=E.event,B=A.special,F=B.drag={not:":input",distance:0,which:1,dragging:false,setup:function(J){J=E.extend({distance:F.distance,which:F.which,not:F.not},J||{});J.distance=I(J.distance);A.add(this,"mousedown",H,J);if(this.attachEvent){this.attachEvent("ondragstart",D)}},teardown:function(){A.remove(this,"mousedown",H);if(this===F.dragging){F.dragging=F.proxy=false}G(this,true);if(this.detachEvent){this.detachEvent("ondragstart",D)}}};B.dragstart=B.dragend={setup:function(){},teardown:function(){}};function H(L){var K=this,J,M=L.data||{};if(M.elem){K=L.dragTarget=M.elem;L.dragProxy=F.proxy||K;L.cursorOffsetX=M.pageX-M.left;L.cursorOffsetY=M.pageY-M.top;L.offsetX=L.pageX-L.cursorOffsetX;L.offsetY=L.pageY-L.cursorOffsetY}else{if(F.dragging||(M.which>0&&L.which!=M.which)||E(L.target).is(M.not)){return }}switch(L.type){case"mousedown":E.extend(M,E(K).offset(),{elem:K,target:L.target,pageX:L.pageX,pageY:L.pageY});A.add(document,"mousemove mouseup",H,M);G(K,false);F.dragging=null;return false;case !F.dragging&&"mousemove":if(I(L.pageX-M.pageX)+I(L.pageY-M.pageY)<M.distance){break}L.target=M.target;J=C(L,"dragstart",K);if(J!==false){F.dragging=K;F.proxy=L.dragProxy=E(J||K)[0]}case"mousemove":if(F.dragging){J=C(L,"drag",K);if(B.drop){B.drop.allowed=(J!==false);B.drop.handler(L)}if(J!==false){break}L.type="mouseup"}case"mouseup":A.remove(document,"mousemove mouseup",H);if(F.dragging){if(B.drop){B.drop.handler(L)}C(L,"dragend",K)}G(K,true);F.dragging=F.proxy=M.elem=false;break}return true}function C(M,K,L){M.type=K;var J=E.event.handle.call(L,M);return J===false?false:J||M.result}function I(J){return Math.pow(J,2)}function D(){return(F.dragging===false)}function G(K,J){if(!K){return }K.unselectable=J?"off":"on";K.onselectstart=function(){return J};if(K.style){K.style.MozUserSelect=J?"":"none"}}})(jQuery); | |
| /* jquery.mousewheel.min.js | |
| * Copyright (c) 2009 Brandon Aaron (http://brandonaaron.net) | |
| * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) | |
| * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses. | |
| * Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers. | |
| * Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix. | |
| * | |
| * Version: 3.0.2 | |
| * | |
| * Requires: 1.2.2+ | |
| */ | |
| (function(c){var a=["DOMMouseScroll","mousewheel"];c.event.special.mousewheel={setup:function(){if(this.addEventListener){for(var d=a.length;d;){this.addEventListener(a[--d],b,false)}}else{this.onmousewheel=b}},teardown:function(){if(this.removeEventListener){for(var d=a.length;d;){this.removeEventListener(a[--d],b,false)}}else{this.onmousewheel=null}}};c.fn.extend({mousewheel:function(d){return d?this.bind("mousewheel",d):this.trigger("mousewheel")},unmousewheel:function(d){return this.unbind("mousewheel",d)}});function b(f){var d=[].slice.call(arguments,1),g=0,e=true;f=c.event.fix(f||window.event);f.type="mousewheel";if(f.wheelDelta){g=f.wheelDelta/120}if(f.detail){g=-f.detail/3}d.unshift(f,g);return c.event.handle.apply(this,d)}})(jQuery); | |
| (function ($) { | |
| var options = { | |
| xaxis: { | |
| zoomRange: null, // or [number, number] (min range, max range) | |
| panRange: null // or [number, number] (min, max) | |
| }, | |
| zoom: { | |
| interactive: false, | |
| trigger: "dblclick", // or "click" for single click | |
| amount: 1.5 // how much to zoom relative to current position, 2 = 200% (zoom in), 0.5 = 50% (zoom out) | |
| }, | |
| pan: { | |
| interactive: false, | |
| cursor: "move", | |
| frameRate: 20 | |
| } | |
| }; | |
| function init(plot) { | |
| function onZoomClick(e, zoomOut) { | |
| var c = plot.offset(); | |
| c.left = e.pageX - c.left; | |
| c.top = e.pageY - c.top; | |
| if (zoomOut) | |
| plot.zoomOut({ center: c }); | |
| else | |
| plot.zoom({ center: c }); | |
| } | |
| function onMouseWheel(e, delta) { | |
| onZoomClick(e, delta < 0); | |
| return false; | |
| } | |
| var prevCursor = 'default', prevPageX = 0, prevPageY = 0, | |
| panTimeout = null; | |
| function onDragStart(e) { | |
| if (e.which != 1) // only accept left-click | |
| return false; | |
| var c = plot.getPlaceholder().css('cursor'); | |
| if (c) | |
| prevCursor = c; | |
| plot.getPlaceholder().css('cursor', plot.getOptions().pan.cursor); | |
| prevPageX = e.pageX; | |
| prevPageY = e.pageY; | |
| } | |
| function onDrag(e) { | |
| var frameRate = plot.getOptions().pan.frameRate; | |
| if (panTimeout || !frameRate) | |
| return; | |
| panTimeout = setTimeout(function () { | |
| plot.pan({ left: prevPageX - e.pageX, | |
| top: prevPageY - e.pageY }); | |
| prevPageX = e.pageX; | |
| prevPageY = e.pageY; | |
| panTimeout = null; | |
| }, 1 / frameRate * 1000); | |
| } | |
| function onDragEnd(e) { | |
| if (panTimeout) { | |
| clearTimeout(panTimeout); | |
| panTimeout = null; | |
| } | |
| plot.getPlaceholder().css('cursor', prevCursor); | |
| plot.pan({ left: prevPageX - e.pageX, | |
| top: prevPageY - e.pageY }); | |
| } | |
| function bindEvents(plot, eventHolder) { | |
| var o = plot.getOptions(); | |
| if (o.zoom.interactive) { | |
| eventHolder[o.zoom.trigger](onZoomClick); | |
| eventHolder.mousewheel(onMouseWheel); | |
| } | |
| if (o.pan.interactive) { | |
| eventHolder.bind("dragstart", { distance: 10 }, onDragStart); | |
| eventHolder.bind("drag", onDrag); | |
| eventHolder.bind("dragend", onDragEnd); | |
| } | |
| } | |
| plot.zoomOut = function (args) { | |
| if (!args) | |
| args = {}; | |
| if (!args.amount) | |
| args.amount = plot.getOptions().zoom.amount | |
| args.amount = 1 / args.amount; | |
| plot.zoom(args); | |
| } | |
| plot.zoom = function (args) { | |
| if (!args) | |
| args = {}; | |
| var c = args.center, | |
| amount = args.amount || plot.getOptions().zoom.amount, | |
| w = plot.width(), h = plot.height(); | |
| if (!c) | |
| c = { left: w / 2, top: h / 2 }; | |
| var xf = c.left / w, | |
| yf = c.top / h, | |
| minmax = { | |
| x: { | |
| min: c.left - xf * w / amount, | |
| max: c.left + (1 - xf) * w / amount | |
| }, | |
| y: { | |
| min: c.top - yf * h / amount, | |
| max: c.top + (1 - yf) * h / amount | |
| } | |
| }; | |
| $.each(plot.getAxes(), function(_, axis) { | |
| var opts = axis.options, | |
| min = minmax[axis.direction].min, | |
| max = minmax[axis.direction].max, | |
| zr = opts.zoomRange; | |
| if (zr === false) // no zooming on this axis | |
| return; | |
| min = axis.c2p(min); | |
| max = axis.c2p(max); | |
| if (min > max) { | |
| // make sure min < max | |
| var tmp = min; | |
| min = max; | |
| max = tmp; | |
| } | |
| var range = max - min; | |
| if (zr && | |
| ((zr[0] != null && range < zr[0]) || | |
| (zr[1] != null && range > zr[1]))) | |
| return; | |
| opts.min = min; | |
| opts.max = max; | |
| }); | |
| plot.setupGrid(); | |
| plot.draw(); | |
| if (!args.preventEvent) | |
| plot.getPlaceholder().trigger("plotzoom", [ plot ]); | |
| } | |
| plot.pan = function (args) { | |
| var delta = { | |
| x: +args.left, | |
| y: +args.top | |
| }; | |
| if (isNaN(delta.x)) | |
| delta.x = 0; | |
| if (isNaN(delta.y)) | |
| delta.y = 0; | |
| $.each(plot.getAxes(), function (_, axis) { | |
| var opts = axis.options, | |
| min, max, d = delta[axis.direction]; | |
| min = axis.c2p(axis.p2c(axis.min) + d), | |
| max = axis.c2p(axis.p2c(axis.max) + d); | |
| var pr = opts.panRange; | |
| if (pr === false) // no panning on this axis | |
| return; | |
| if (pr) { | |
| // check whether we hit the wall | |
| if (pr[0] != null && pr[0] > min) { | |
| d = pr[0] - min; | |
| min += d; | |
| max += d; | |
| } | |
| if (pr[1] != null && pr[1] < max) { | |
| d = pr[1] - max; | |
| min += d; | |
| max += d; | |
| } | |
| } | |
| opts.min = min; | |
| opts.max = max; | |
| }); | |
| plot.setupGrid(); | |
| plot.draw(); | |
| if (!args.preventEvent) | |
| plot.getPlaceholder().trigger("plotpan", [ plot ]); | |
| } | |
| function shutdown(plot, eventHolder) { | |
| eventHolder.unbind(plot.getOptions().zoom.trigger, onZoomClick); | |
| eventHolder.unbind("mousewheel", onMouseWheel); | |
| eventHolder.unbind("dragstart", onDragStart); | |
| eventHolder.unbind("drag", onDrag); | |
| eventHolder.unbind("dragend", onDragEnd); | |
| if (panTimeout) | |
| clearTimeout(panTimeout); | |
| } | |
| plot.hooks.bindEvents.push(bindEvents); | |
| plot.hooks.shutdown.push(shutdown); | |
| } | |
| $.plot.plugins.push({ | |
| init: init, | |
| options: options, | |
| name: 'navigate', | |
| version: '1.3' | |
| }); | |
| })(jQuery); | |