--- /dev/null
+/* Flot plugin for adding the ability to pan and zoom the plot.
+
+Copyright (c) 2007-2013 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]) ||
+ (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, 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);
Code Review / stor4nfv.git / blobdiff