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Diffstat (limited to 'misc/flot/jquery.flot.navigate.js')
| -rw-r--r-- | misc/flot/jquery.flot.navigate.js | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/misc/flot/jquery.flot.navigate.js b/misc/flot/jquery.flot.navigate.js new file mode 100644 index 0000000..13fb7f1 --- /dev/null +++ b/misc/flot/jquery.flot.navigate.js @@ -0,0 +1,346 @@ +/* Flot plugin for adding the ability to pan and zoom the plot. + +Copyright (c) 2007-2014 IOLA and Ole Laursen. +Licensed under the MIT license. + +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 +"plotpan" and "plotzoom" events, useful for synchronizing plots. + +The plugin supports these 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(a){function e(h){var k,j=this,l=h.data||{};if(l.elem)j=h.dragTarget=l.elem,h.dragProxy=d.proxy||j,h.cursorOffsetX=l.pageX-l.left,h.cursorOffsetY=l.pageY-l.top,h.offsetX=h.pageX-h.cursorOffsetX,h.offsetY=h.pageY-h.cursorOffsetY;else if(d.dragging||l.which>0&&h.which!=l.which||a(h.target).is(l.not))return;switch(h.type){case"mousedown":return a.extend(l,a(j).offset(),{elem:j,target:h.target,pageX:h.pageX,pageY:h.pageY}),b.add(document,"mousemove mouseup",e,l),i(j,!1),d.dragging=null,!1;case!d.dragging&&"mousemove":if(g(h.pageX-l.pageX)+g(h.pageY-l.pageY)<l.distance)break;h.target=l.target,k=f(h,"dragstart",j),k!==!1&&(d.dragging=j,d.proxy=h.dragProxy=a(k||j)[0]);case"mousemove":if(d.dragging){if(k=f(h,"drag",j),c.drop&&(c.drop.allowed=k!==!1,c.drop.handler(h)),k!==!1)break;h.type="mouseup"}case"mouseup":b.remove(document,"mousemove mouseup",e),d.dragging&&(c.drop&&c.drop.handler(h),f(h,"dragend",j)),i(j,!0),d.dragging=d.proxy=l.elem=!1}return!0}function f(b,c,d){b.type=c;var e=a.event.dispatch.call(d,b);return e===!1?!1:e||b.result}function g(a){return Math.pow(a,2)}function h(){return d.dragging===!1}function i(a,b){a&&(a.unselectable=b?"off":"on",a.onselectstart=function(){return b},a.style&&(a.style.MozUserSelect=b?"":"none"))}a.fn.drag=function(a,b,c){return b&&this.bind("dragstart",a),c&&this.bind("dragend",c),a?this.bind("drag",b?b:a):this.trigger("drag")};var b=a.event,c=b.special,d=c.drag={not:":input",distance:0,which:1,dragging:!1,setup:function(c){c=a.extend({distance:d.distance,which:d.which,not:d.not},c||{}),c.distance=g(c.distance),b.add(this,"mousedown",e,c),this.attachEvent&&this.attachEvent("ondragstart",h)},teardown:function(){b.remove(this,"mousedown",e),this===d.dragging&&(d.dragging=d.proxy=!1),i(this,!0),this.detachEvent&&this.detachEvent("ondragstart",h)}};c.dragstart=c.dragend={setup:function(){},teardown:function(){}}})(jQuery); + +/* jquery.mousewheel.min.js + * Copyright (c) 2011 Brandon Aaron (http://brandonaaron.net) + * Licensed under the MIT License (LICENSE.txt). + * 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. + * Thanks to: Seamus Leahy for adding deltaX and deltaY + * + * Version: 3.0.6 + * + * Requires: 1.2.2+ + */ +(function(d){function e(a){var b=a||window.event,c=[].slice.call(arguments,1),f=0,e=0,g=0,a=d.event.fix(b);a.type="mousewheel";b.wheelDelta&&(f=b.wheelDelta/120);b.detail&&(f=-b.detail/3);g=f;void 0!==b.axis&&b.axis===b.HORIZONTAL_AXIS&&(g=0,e=-1*f);void 0!==b.wheelDeltaY&&(g=b.wheelDeltaY/120);void 0!==b.wheelDeltaX&&(e=-1*b.wheelDeltaX/120);c.unshift(a,f,e,g);return(d.event.dispatch||d.event.handle).apply(this,c)}var c=["DOMMouseScroll","mousewheel"];if(d.event.fixHooks)for(var h=c.length;h;)d.event.fixHooks[c[--h]]=d.event.mouseHooks;d.event.special.mousewheel={setup:function(){if(this.addEventListener)for(var a=c.length;a;)this.addEventListener(c[--a],e,!1);else this.onmousewheel=e},teardown:function(){if(this.removeEventListener)for(var a=c.length;a;)this.removeEventListener(c[--a],e,!1);else this.onmousewheel=null}};d.fn.extend({mousewheel:function(a){return a?this.bind("mousewheel",a):this.trigger("mousewheel")},unmousewheel:function(a){return this.unbind("mousewheel",a)}})})(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) { + e.preventDefault(); + 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, + pr = opts.panRange; + + 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; + } + + //Check that we are in panRange + if (pr) { + if (pr[0] != null && min < pr[0]) { + min = pr[0]; + } + if (pr[1] != null && max > pr[1]) { + max = pr[1]; + } + } + + var range = max - min; + if (zr && + ((zr[0] != null && range < zr[0] && amount >1) || + (zr[1] != null && range > zr[1] && amount <1))) + return; + + opts.min = min; + opts.max = max; + }); + + plot.setupGrid(); + plot.draw(); + + if (!args.preventEvent) + plot.getPlaceholder().trigger("plotzoom", [ plot, args ]); + }; + + 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, args ]); + }; + + 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); |