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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 | /* 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. Example usage: plot = $.plot(...); // zoom default amount in on the pixel (100, 200) plot.zoom({ center: { left: 10, top: 20 } }); // zoom out again plot.zoomOut({ center: { left: 10, top: 20 } }); // pan 100 pixels to the left and 20 down plot.pan({ left: -100, top: 20 }) 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 } xaxis, yaxis, x2axis, y2axis: { zoomRange: null // or [number, number] (min range, max range) panRange: null // or [number, number] (min, max) } "interactive" enables the built-in drag/click behaviour. "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). "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 of them to null to ignore. "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. */ // 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 } }; function init(plot) { function bindEvents(plot, eventHolder) { var o = plot.getOptions(); if (o.zoom.interactive) { function clickHandler(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 }); } eventHolder[o.zoom.trigger](clickHandler); eventHolder.mousewheel(function (e, delta) { clickHandler(e, delta < 0); return false; }); } if (o.pan.interactive) { var prevCursor = 'default', pageX = 0, pageY = 0; eventHolder.bind("dragstart", { distance: 10 }, function (e) { if (e.which != 1) // only accept left-click return false; eventHolderCursor = eventHolder.css('cursor'); eventHolder.css('cursor', 'move'); pageX = e.pageX; pageY = e.pageY; }); eventHolder.bind("drag", function (e) { // unused at the moment, but we need it here to // trigger the dragstart/dragend events }); eventHolder.bind("dragend", function (e) { eventHolder.css('cursor', prevCursor); plot.pan({ left: pageX - e.pageX, top: pageY - e.pageY }); }); } } 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 axes = plot.getAxes(), options = plot.getOptions(), c = args.center, amount = args.amount ? args.amount : options.zoom.amount, w = plot.width(), h = plot.height(); if (!c) c = { left: w / 2, top: h / 2 }; var xf = c.left / w, x1 = c.left - xf * w / amount, x2 = c.left + (1 - xf) * w / amount, yf = c.top / h, y1 = c.top - yf * h / amount, y2 = c.top + (1 - yf) * h / amount; function scaleAxis(min, max, name) { var axis = axes[name], axisOptions = options[name]; if (!axis.used) return; min = axis.c2p(min); max = axis.c2p(max); if (max < min) { // make sure min < max var tmp = min min = max; max = tmp; } var range = max - min, zr = axisOptions.zoomRange; if (zr && ((zr[0] != null && range < zr[0]) || (zr[1] != null && range > zr[1]))) return; axisOptions.min = min; axisOptions.max = max; } scaleAxis(x1, x2, 'xaxis'); scaleAxis(x1, x2, 'x2axis'); scaleAxis(y1, y2, 'yaxis'); scaleAxis(y1, y2, 'y2axis'); plot.setupGrid(); plot.draw(); if (!args.preventEvent) plot.getPlaceholder().trigger("plotzoom", [ plot ]); } plot.pan = function (args) { var l = +args.left, t = +args.top, axes = plot.getAxes(), options = plot.getOptions(); if (isNaN(l)) l = 0; if (isNaN(t)) t = 0; function panAxis(delta, name) { var axis = axes[name], axisOptions = options[name], min, max; if (!axis.used) return; min = axis.c2p(axis.p2c(axis.min) + delta), max = axis.c2p(axis.p2c(axis.max) + delta); var pr = axisOptions.panRange; if (pr) { // check whether we hit the wall if (pr[0] != null && pr[0] > min) { delta = pr[0] - min; min += delta; max += delta; } if (pr[1] != null && pr[1] < max) { delta = pr[1] - max; min += delta; max += delta; } } axisOptions.min = min; axisOptions.max = max; } panAxis(l, 'xaxis'); panAxis(l, 'x2axis'); panAxis(t, 'yaxis'); panAxis(t, 'y2axis'); plot.setupGrid(); plot.draw(); if (!args.preventEvent) plot.getPlaceholder().trigger("plotpan", [ plot ]); } plot.hooks.bindEvents.push(bindEvents); } $.plot.plugins.push({ init: init, options: options, name: 'navigate', version: '1.1' }); })(jQuery); |