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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 | /* 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 ]); 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