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author | 2017-09-01 11:57:47 +0800 | |
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committer | 2017-09-01 11:57:58 +0800 | |
commit | 57dbba269d19bc59fad89160200bb2dbcccb9003 (patch) | |
tree | d466041ceffa2161124ca79a48b3e077777c74b8 /usecaseui-common/src/main/webapp/static/fusion/raptor/dy3/js/plugins/range-selector.js | |
parent | 4ff32341a0af1972b44a7410e76e9b231131e7ab (diff) |
Upload Monitor function code
Change-Id: I33ad76221b4cb771a298ff240245fc24be664efb
Issue-Id: USECASEUI-6
Signed-off-by: shentao <shentao@chinamobile.com>
Diffstat (limited to 'usecaseui-common/src/main/webapp/static/fusion/raptor/dy3/js/plugins/range-selector.js')
-rw-r--r-- | usecaseui-common/src/main/webapp/static/fusion/raptor/dy3/js/plugins/range-selector.js | 852 |
1 files changed, 852 insertions, 0 deletions
diff --git a/usecaseui-common/src/main/webapp/static/fusion/raptor/dy3/js/plugins/range-selector.js b/usecaseui-common/src/main/webapp/static/fusion/raptor/dy3/js/plugins/range-selector.js new file mode 100644 index 00000000..089e64aa --- /dev/null +++ b/usecaseui-common/src/main/webapp/static/fusion/raptor/dy3/js/plugins/range-selector.js @@ -0,0 +1,852 @@ +/** + * @license + * Copyright 2011 Paul Felix (paul.eric.felix@gmail.com) + * MIT-licensed (http://opensource.org/licenses/MIT) + */ +/*global Dygraph:false,TouchEvent:false */ + +/** + * @fileoverview This file contains the RangeSelector plugin used to provide + * a timeline range selector widget for dygraphs. + */ + +Dygraph.Plugins.RangeSelector = (function() { + +/*jshint globalstrict: true */ +/*global Dygraph:false */ +"use strict"; + +var rangeSelector = function() { + this.isIE_ = /MSIE/.test(navigator.userAgent) && !window.opera; + this.hasTouchInterface_ = typeof(TouchEvent) != 'undefined'; + this.isMobileDevice_ = /mobile|android/gi.test(navigator.appVersion); + this.interfaceCreated_ = false; +}; + +rangeSelector.prototype.toString = function() { + return "RangeSelector Plugin"; +}; + +rangeSelector.prototype.activate = function(dygraph) { + this.dygraph_ = dygraph; + this.isUsingExcanvas_ = dygraph.isUsingExcanvas_; + if (this.getOption_('showRangeSelector')) { + this.createInterface_(); + } + return { + layout: this.reserveSpace_, + predraw: this.renderStaticLayer_, + didDrawChart: this.renderInteractiveLayer_ + }; +}; + +rangeSelector.prototype.destroy = function() { + this.bgcanvas_ = null; + this.fgcanvas_ = null; + this.leftZoomHandle_ = null; + this.rightZoomHandle_ = null; + this.iePanOverlay_ = null; +}; + +//------------------------------------------------------------------ +// Private methods +//------------------------------------------------------------------ + +rangeSelector.prototype.getOption_ = function(name) { + return this.dygraph_.getOption(name); +}; + +rangeSelector.prototype.setDefaultOption_ = function(name, value) { + return this.dygraph_.attrs_[name] = value; +}; + +/** + * @private + * Creates the range selector elements and adds them to the graph. + */ +rangeSelector.prototype.createInterface_ = function() { + this.createCanvases_(); + if (this.isUsingExcanvas_) { + this.createIEPanOverlay_(); + } + this.createZoomHandles_(); + this.initInteraction_(); + + // Range selector and animatedZooms have a bad interaction. See issue 359. + if (this.getOption_('animatedZooms')) { + this.dygraph_.warn('Animated zooms and range selector are not compatible; disabling animatedZooms.'); + this.dygraph_.updateOptions({animatedZooms: false}, true); + } + + this.interfaceCreated_ = true; + this.addToGraph_(); +}; + +/** + * @private + * Adds the range selector to the graph. + */ +rangeSelector.prototype.addToGraph_ = function() { + var graphDiv = this.graphDiv_ = this.dygraph_.graphDiv; + graphDiv.appendChild(this.bgcanvas_); + graphDiv.appendChild(this.fgcanvas_); + graphDiv.appendChild(this.leftZoomHandle_); + graphDiv.appendChild(this.rightZoomHandle_); +}; + +/** + * @private + * Removes the range selector from the graph. + */ +rangeSelector.prototype.removeFromGraph_ = function() { + var graphDiv = this.graphDiv_; + graphDiv.removeChild(this.bgcanvas_); + graphDiv.removeChild(this.fgcanvas_); + graphDiv.removeChild(this.leftZoomHandle_); + graphDiv.removeChild(this.rightZoomHandle_); + this.graphDiv_ = null; +}; + +/** + * @private + * Called by Layout to allow range selector to reserve its space. + */ +rangeSelector.prototype.reserveSpace_ = function(e) { + if (this.getOption_('showRangeSelector')) { + e.reserveSpaceBottom(this.getOption_('rangeSelectorHeight') + 4); + } +}; + +/** + * @private + * Renders the static portion of the range selector at the predraw stage. + */ +rangeSelector.prototype.renderStaticLayer_ = function() { + if (!this.updateVisibility_()) { + return; + } + this.resize_(); + this.drawStaticLayer_(); +}; + +/** + * @private + * Renders the interactive portion of the range selector after the chart has been drawn. + */ +rangeSelector.prototype.renderInteractiveLayer_ = function() { + if (!this.updateVisibility_() || this.isChangingRange_) { + return; + } + this.placeZoomHandles_(); + this.drawInteractiveLayer_(); +}; + +/** + * @private + * Check to see if the range selector is enabled/disabled and update visibility accordingly. + */ +rangeSelector.prototype.updateVisibility_ = function() { + var enabled = this.getOption_('showRangeSelector'); + if (enabled) { + if (!this.interfaceCreated_) { + this.createInterface_(); + } else if (!this.graphDiv_ || !this.graphDiv_.parentNode) { + this.addToGraph_(); + } + } else if (this.graphDiv_) { + this.removeFromGraph_(); + var dygraph = this.dygraph_; + setTimeout(function() { dygraph.width_ = 0; dygraph.resize(); }, 1); + } + return enabled; +}; + +/** + * @private + * Resizes the range selector. + */ +rangeSelector.prototype.resize_ = function() { + function setElementRect(canvas, rect) { + canvas.style.top = rect.y + 'px'; + canvas.style.left = rect.x + 'px'; + canvas.width = rect.w; + canvas.height = rect.h; + canvas.style.width = canvas.width + 'px'; // for IE + canvas.style.height = canvas.height + 'px'; // for IE + } + + var plotArea = this.dygraph_.layout_.getPlotArea(); + + var xAxisLabelHeight = 0; + if(this.getOption_('drawXAxis')){ + xAxisLabelHeight = this.getOption_('xAxisHeight') || (this.getOption_('axisLabelFontSize') + 2 * this.getOption_('axisTickSize')); + } + this.canvasRect_ = { + x: plotArea.x, + y: plotArea.y + plotArea.h + xAxisLabelHeight + 4, + w: plotArea.w, + h: this.getOption_('rangeSelectorHeight') + }; + + setElementRect(this.bgcanvas_, this.canvasRect_); + setElementRect(this.fgcanvas_, this.canvasRect_); +}; + +/** + * @private + * Creates the background and foreground canvases. + */ +rangeSelector.prototype.createCanvases_ = function() { + this.bgcanvas_ = Dygraph.createCanvas(); + this.bgcanvas_.className = 'dygraph-rangesel-bgcanvas'; + this.bgcanvas_.style.position = 'absolute'; + this.bgcanvas_.style.zIndex = 9; + this.bgcanvas_ctx_ = Dygraph.getContext(this.bgcanvas_); + + this.fgcanvas_ = Dygraph.createCanvas(); + this.fgcanvas_.className = 'dygraph-rangesel-fgcanvas'; + this.fgcanvas_.style.position = 'absolute'; + this.fgcanvas_.style.zIndex = 9; + this.fgcanvas_.style.cursor = 'default'; + this.fgcanvas_ctx_ = Dygraph.getContext(this.fgcanvas_); +}; + +/** + * @private + * Creates overlay divs for IE/Excanvas so that mouse events are handled properly. + */ +rangeSelector.prototype.createIEPanOverlay_ = function() { + this.iePanOverlay_ = document.createElement("div"); + this.iePanOverlay_.style.position = 'absolute'; + this.iePanOverlay_.style.backgroundColor = 'white'; + this.iePanOverlay_.style.filter = 'alpha(opacity=0)'; + this.iePanOverlay_.style.display = 'none'; + this.iePanOverlay_.style.cursor = 'move'; + this.fgcanvas_.appendChild(this.iePanOverlay_); +}; + +/** + * @private + * Creates the zoom handle elements. + */ +rangeSelector.prototype.createZoomHandles_ = function() { + var img = new Image(); + img.className = 'dygraph-rangesel-zoomhandle'; + img.style.position = 'absolute'; + img.style.zIndex = 10; + img.style.visibility = 'hidden'; // Initially hidden so they don't show up in the wrong place. + img.style.cursor = 'col-resize'; + + if (/MSIE 7/.test(navigator.userAgent)) { // IE7 doesn't support embedded src data. + img.width = 7; + img.height = 14; + img.style.backgroundColor = 'white'; + img.style.border = '1px solid #333333'; // Just show box in IE7. + } else { + img.width = 9; + img.height = 16; + img.src = 'data:image/png;base64,' + +'iVBORw0KGgoAAAANSUhEUgAAAAkAAAAQCAYAAADESFVDAAAAAXNSR0IArs4c6QAAAAZiS0dEANAA' + +'zwDP4Z7KegAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAAd0SU1FB9sHGw0cMqdt1UwAAAAZdEVYdENv' + +'bW1lbnQAQ3JlYXRlZCB3aXRoIEdJTVBXgQ4XAAAAaElEQVQoz+3SsRFAQBCF4Z9WJM8KCDVwownl' + +'6YXsTmCUsyKGkZzcl7zkz3YLkypgAnreFmDEpHkIwVOMfpdi9CEEN2nGpFdwD03yEqDtOgCaun7s' + +'qSTDH32I1pQA2Pb9sZecAxc5r3IAb21d6878xsAAAAAASUVORK5CYII='; + } + + if (this.isMobileDevice_) { + img.width *= 2; + img.height *= 2; + } + + this.leftZoomHandle_ = img; + this.rightZoomHandle_ = img.cloneNode(false); +}; + +/** + * @private + * Sets up the interaction for the range selector. + */ +rangeSelector.prototype.initInteraction_ = function() { + var self = this; + var topElem = this.isIE_ ? document : window; + var clientXLast = 0; + var handle = null; + var isZooming = false; + var isPanning = false; + var dynamic = !this.isMobileDevice_ && !this.isUsingExcanvas_; + + // We cover iframes during mouse interactions. See comments in + // dygraph-utils.js for more info on why this is a good idea. + var tarp = new Dygraph.IFrameTarp(); + + // functions, defined below. Defining them this way (rather than with + // "function foo() {...}" makes JSHint happy. + var toXDataWindow, onZoomStart, onZoom, onZoomEnd, doZoom, isMouseInPanZone, + onPanStart, onPan, onPanEnd, doPan, onCanvasHover; + + // Touch event functions + var onZoomHandleTouchEvent, onCanvasTouchEvent, addTouchEvents; + + toXDataWindow = function(zoomHandleStatus) { + var xDataLimits = self.dygraph_.xAxisExtremes(); + var fact = (xDataLimits[1] - xDataLimits[0])/self.canvasRect_.w; + var xDataMin = xDataLimits[0] + (zoomHandleStatus.leftHandlePos - self.canvasRect_.x)*fact; + var xDataMax = xDataLimits[0] + (zoomHandleStatus.rightHandlePos - self.canvasRect_.x)*fact; + return [xDataMin, xDataMax]; + }; + + onZoomStart = function(e) { + Dygraph.cancelEvent(e); + isZooming = true; + clientXLast = e.clientX; + handle = e.target ? e.target : e.srcElement; + if (e.type === 'mousedown' || e.type === 'dragstart') { + // These events are removed manually. + Dygraph.addEvent(topElem, 'mousemove', onZoom); + Dygraph.addEvent(topElem, 'mouseup', onZoomEnd); + } + self.fgcanvas_.style.cursor = 'col-resize'; + tarp.cover(); + return true; + }; + + onZoom = function(e) { + if (!isZooming) { + return false; + } + Dygraph.cancelEvent(e); + + var delX = e.clientX - clientXLast; + if (Math.abs(delX) < 4) { + return true; + } + clientXLast = e.clientX; + + // Move handle. + var zoomHandleStatus = self.getZoomHandleStatus_(); + var newPos; + if (handle == self.leftZoomHandle_) { + newPos = zoomHandleStatus.leftHandlePos + delX; + newPos = Math.min(newPos, zoomHandleStatus.rightHandlePos - handle.width - 3); + newPos = Math.max(newPos, self.canvasRect_.x); + } else { + newPos = zoomHandleStatus.rightHandlePos + delX; + newPos = Math.min(newPos, self.canvasRect_.x + self.canvasRect_.w); + newPos = Math.max(newPos, zoomHandleStatus.leftHandlePos + handle.width + 3); + } + var halfHandleWidth = handle.width/2; + handle.style.left = (newPos - halfHandleWidth) + 'px'; + self.drawInteractiveLayer_(); + + // Zoom on the fly (if not using excanvas). + if (dynamic) { + doZoom(); + } + return true; + }; + + onZoomEnd = function(e) { + if (!isZooming) { + return false; + } + isZooming = false; + tarp.uncover(); + Dygraph.removeEvent(topElem, 'mousemove', onZoom); + Dygraph.removeEvent(topElem, 'mouseup', onZoomEnd); + self.fgcanvas_.style.cursor = 'default'; + + // If using excanvas, Zoom now. + if (!dynamic) { + doZoom(); + } + return true; + }; + + doZoom = function() { + try { + var zoomHandleStatus = self.getZoomHandleStatus_(); + self.isChangingRange_ = true; + if (!zoomHandleStatus.isZoomed) { + self.dygraph_.resetZoom(); + } else { + var xDataWindow = toXDataWindow(zoomHandleStatus); + self.dygraph_.doZoomXDates_(xDataWindow[0], xDataWindow[1]); + } + } finally { + self.isChangingRange_ = false; + } + }; + + isMouseInPanZone = function(e) { + if (self.isUsingExcanvas_) { + return e.srcElement == self.iePanOverlay_; + } else { + var rect = self.leftZoomHandle_.getBoundingClientRect(); + var leftHandleClientX = rect.left + rect.width/2; + rect = self.rightZoomHandle_.getBoundingClientRect(); + var rightHandleClientX = rect.left + rect.width/2; + return (e.clientX > leftHandleClientX && e.clientX < rightHandleClientX); + } + }; + + onPanStart = function(e) { + if (!isPanning && isMouseInPanZone(e) && self.getZoomHandleStatus_().isZoomed) { + Dygraph.cancelEvent(e); + isPanning = true; + clientXLast = e.clientX; + if (e.type === 'mousedown') { + // These events are removed manually. + Dygraph.addEvent(topElem, 'mousemove', onPan); + Dygraph.addEvent(topElem, 'mouseup', onPanEnd); + } + return true; + } + return false; + }; + + onPan = function(e) { + if (!isPanning) { + return false; + } + Dygraph.cancelEvent(e); + + var delX = e.clientX - clientXLast; + if (Math.abs(delX) < 4) { + return true; + } + clientXLast = e.clientX; + + // Move range view + var zoomHandleStatus = self.getZoomHandleStatus_(); + var leftHandlePos = zoomHandleStatus.leftHandlePos; + var rightHandlePos = zoomHandleStatus.rightHandlePos; + var rangeSize = rightHandlePos - leftHandlePos; + if (leftHandlePos + delX <= self.canvasRect_.x) { + leftHandlePos = self.canvasRect_.x; + rightHandlePos = leftHandlePos + rangeSize; + } else if (rightHandlePos + delX >= self.canvasRect_.x + self.canvasRect_.w) { + rightHandlePos = self.canvasRect_.x + self.canvasRect_.w; + leftHandlePos = rightHandlePos - rangeSize; + } else { + leftHandlePos += delX; + rightHandlePos += delX; + } + var halfHandleWidth = self.leftZoomHandle_.width/2; + self.leftZoomHandle_.style.left = (leftHandlePos - halfHandleWidth) + 'px'; + self.rightZoomHandle_.style.left = (rightHandlePos - halfHandleWidth) + 'px'; + self.drawInteractiveLayer_(); + + // Do pan on the fly (if not using excanvas). + if (dynamic) { + doPan(); + } + return true; + }; + + onPanEnd = function(e) { + if (!isPanning) { + return false; + } + isPanning = false; + Dygraph.removeEvent(topElem, 'mousemove', onPan); + Dygraph.removeEvent(topElem, 'mouseup', onPanEnd); + // If using excanvas, do pan now. + if (!dynamic) { + doPan(); + } + return true; + }; + + doPan = function() { + try { + self.isChangingRange_ = true; + self.dygraph_.dateWindow_ = toXDataWindow(self.getZoomHandleStatus_()); + self.dygraph_.drawGraph_(false); + } finally { + self.isChangingRange_ = false; + } + }; + + onCanvasHover = function(e) { + if (isZooming || isPanning) { + return; + } + var cursor = isMouseInPanZone(e) ? 'move' : 'default'; + if (cursor != self.fgcanvas_.style.cursor) { + self.fgcanvas_.style.cursor = cursor; + } + }; + + onZoomHandleTouchEvent = function(e) { + if (e.type == 'touchstart' && e.targetTouches.length == 1) { + if (onZoomStart(e.targetTouches[0])) { + Dygraph.cancelEvent(e); + } + } else if (e.type == 'touchmove' && e.targetTouches.length == 1) { + if (onZoom(e.targetTouches[0])) { + Dygraph.cancelEvent(e); + } + } else { + onZoomEnd(e); + } + }; + + onCanvasTouchEvent = function(e) { + if (e.type == 'touchstart' && e.targetTouches.length == 1) { + if (onPanStart(e.targetTouches[0])) { + Dygraph.cancelEvent(e); + } + } else if (e.type == 'touchmove' && e.targetTouches.length == 1) { + if (onPan(e.targetTouches[0])) { + Dygraph.cancelEvent(e); + } + } else { + onPanEnd(e); + } + }; + + addTouchEvents = function(elem, fn) { + var types = ['touchstart', 'touchend', 'touchmove', 'touchcancel']; + for (var i = 0; i < types.length; i++) { + self.dygraph_.addAndTrackEvent(elem, types[i], fn); + } + }; + + this.setDefaultOption_('interactionModel', Dygraph.Interaction.dragIsPanInteractionModel); + this.setDefaultOption_('panEdgeFraction', 0.0001); + + var dragStartEvent = window.opera ? 'mousedown' : 'dragstart'; + this.dygraph_.addAndTrackEvent(this.leftZoomHandle_, dragStartEvent, onZoomStart); + this.dygraph_.addAndTrackEvent(this.rightZoomHandle_, dragStartEvent, onZoomStart); + + if (this.isUsingExcanvas_) { + this.dygraph_.addAndTrackEvent(this.iePanOverlay_, 'mousedown', onPanStart); + } else { + this.dygraph_.addAndTrackEvent(this.fgcanvas_, 'mousedown', onPanStart); + this.dygraph_.addAndTrackEvent(this.fgcanvas_, 'mousemove', onCanvasHover); + } + + // Touch events + if (this.hasTouchInterface_) { + addTouchEvents(this.leftZoomHandle_, onZoomHandleTouchEvent); + addTouchEvents(this.rightZoomHandle_, onZoomHandleTouchEvent); + addTouchEvents(this.fgcanvas_, onCanvasTouchEvent); + } +}; + +/** + * @private + * Draws the static layer in the background canvas. + */ +rangeSelector.prototype.drawStaticLayer_ = function() { + var ctx = this.bgcanvas_ctx_; + ctx.clearRect(0, 0, this.canvasRect_.w, this.canvasRect_.h); + try { + this.drawMiniPlot_(); + } catch(ex) { + Dygraph.warn(ex); + } + + var margin = 0.5; + this.bgcanvas_ctx_.lineWidth = 1; + ctx.strokeStyle = 'gray'; + ctx.beginPath(); + ctx.moveTo(margin, margin); + ctx.lineTo(margin, this.canvasRect_.h-margin); + ctx.lineTo(this.canvasRect_.w-margin, this.canvasRect_.h-margin); + ctx.lineTo(this.canvasRect_.w-margin, margin); + ctx.stroke(); +}; + + +/** + * @private + * Draws the mini plot in the background canvas. + */ +rangeSelector.prototype.drawMiniPlot_ = function() { + var fillStyle = this.getOption_('rangeSelectorPlotFillColor'); + var strokeStyle = this.getOption_('rangeSelectorPlotStrokeColor'); + if (!fillStyle && !strokeStyle) { + return; + } + + var stepPlot = this.getOption_('stepPlot'); + + var combinedSeriesData = this.computeCombinedSeriesAndLimits_(); + var yRange = combinedSeriesData.yMax - combinedSeriesData.yMin; + + // Draw the mini plot. + var ctx = this.bgcanvas_ctx_; + var margin = 0.5; + + var xExtremes = this.dygraph_.xAxisExtremes(); + var xRange = Math.max(xExtremes[1] - xExtremes[0], 1.e-30); + var xFact = (this.canvasRect_.w - margin)/xRange; + var yFact = (this.canvasRect_.h - margin)/yRange; + var canvasWidth = this.canvasRect_.w - margin; + var canvasHeight = this.canvasRect_.h - margin; + + var prevX = null, prevY = null; + + ctx.beginPath(); + ctx.moveTo(margin, canvasHeight); + for (var i = 0; i < combinedSeriesData.data.length; i++) { + var dataPoint = combinedSeriesData.data[i]; + var x = ((dataPoint[0] !== null) ? ((dataPoint[0] - xExtremes[0])*xFact) : NaN); + var y = ((dataPoint[1] !== null) ? (canvasHeight - (dataPoint[1] - combinedSeriesData.yMin)*yFact) : NaN); + if (isFinite(x) && isFinite(y)) { + if(prevX === null) { + ctx.lineTo(x, canvasHeight); + } + else if (stepPlot) { + ctx.lineTo(x, prevY); + } + ctx.lineTo(x, y); + prevX = x; + prevY = y; + } + else { + if(prevX !== null) { + if (stepPlot) { + ctx.lineTo(x, prevY); + ctx.lineTo(x, canvasHeight); + } + else { + ctx.lineTo(prevX, canvasHeight); + } + } + prevX = prevY = null; + } + } + ctx.lineTo(canvasWidth, canvasHeight); + ctx.closePath(); + + if (fillStyle) { + var lingrad = this.bgcanvas_ctx_.createLinearGradient(0, 0, 0, canvasHeight); + lingrad.addColorStop(0, 'white'); + lingrad.addColorStop(1, fillStyle); + this.bgcanvas_ctx_.fillStyle = lingrad; + ctx.fill(); + } + + if (strokeStyle) { + this.bgcanvas_ctx_.strokeStyle = strokeStyle; + this.bgcanvas_ctx_.lineWidth = 1.5; + ctx.stroke(); + } +}; + +/** + * @private + * Computes and returns the combinded series data along with min/max for the mini plot. + * @return {Object} An object containing combinded series array, ymin, ymax. + */ +rangeSelector.prototype.computeCombinedSeriesAndLimits_ = function() { + var data = this.dygraph_.rawData_; + var logscale = this.getOption_('logscale'); + + // Create a combined series (average of all series values). + var combinedSeries = []; + var sum; + var count; + var mutipleValues; + var i, j, k; + var xVal, yVal; + + // Find out if data has multiple values per datapoint. + // Go to first data point that actually has values (see http://code.google.com/p/dygraphs/issues/detail?id=246) + for (i = 0; i < data.length; i++) { + if (data[i].length > 1 && data[i][1] !== null) { + mutipleValues = typeof data[i][1] != 'number'; + if (mutipleValues) { + sum = []; + count = []; + for (k = 0; k < data[i][1].length; k++) { + sum.push(0); + count.push(0); + } + } + break; + } + } + + for (i = 0; i < data.length; i++) { + var dataPoint = data[i]; + xVal = dataPoint[0]; + + if (mutipleValues) { + for (k = 0; k < sum.length; k++) { + sum[k] = count[k] = 0; + } + } else { + sum = count = 0; + } + + for (j = 1; j < dataPoint.length; j++) { + if (this.dygraph_.visibility()[j-1]) { + var y; + if (mutipleValues) { + for (k = 0; k < sum.length; k++) { + y = dataPoint[j][k]; + if (y === null || isNaN(y)) continue; + sum[k] += y; + count[k]++; + } + } else { + y = dataPoint[j]; + if (y === null || isNaN(y)) continue; + sum += y; + count++; + } + } + } + + if (mutipleValues) { + for (k = 0; k < sum.length; k++) { + sum[k] /= count[k]; + } + yVal = sum.slice(0); + } else { + yVal = sum/count; + } + + combinedSeries.push([xVal, yVal]); + } + + // Account for roll period, fractions. + combinedSeries = this.dygraph_.rollingAverage(combinedSeries, this.dygraph_.rollPeriod_); + + if (typeof combinedSeries[0][1] != 'number') { + for (i = 0; i < combinedSeries.length; i++) { + yVal = combinedSeries[i][1]; + combinedSeries[i][1] = yVal[0]; + } + } + + // Compute the y range. + var yMin = Number.MAX_VALUE; + var yMax = -Number.MAX_VALUE; + for (i = 0; i < combinedSeries.length; i++) { + yVal = combinedSeries[i][1]; + if (yVal !== null && isFinite(yVal) && (!logscale || yVal > 0)) { + yMin = Math.min(yMin, yVal); + yMax = Math.max(yMax, yVal); + } + } + + // Convert Y data to log scale if needed. + // Also, expand the Y range to compress the mini plot a little. + var extraPercent = 0.25; + if (logscale) { + yMax = Dygraph.log10(yMax); + yMax += yMax*extraPercent; + yMin = Dygraph.log10(yMin); + for (i = 0; i < combinedSeries.length; i++) { + combinedSeries[i][1] = Dygraph.log10(combinedSeries[i][1]); + } + } else { + var yExtra; + var yRange = yMax - yMin; + if (yRange <= Number.MIN_VALUE) { + yExtra = yMax*extraPercent; + } else { + yExtra = yRange*extraPercent; + } + yMax += yExtra; + yMin -= yExtra; + } + + return {data: combinedSeries, yMin: yMin, yMax: yMax}; +}; + +/** + * @private + * Places the zoom handles in the proper position based on the current X data window. + */ +rangeSelector.prototype.placeZoomHandles_ = function() { + var xExtremes = this.dygraph_.xAxisExtremes(); + var xWindowLimits = this.dygraph_.xAxisRange(); + var xRange = xExtremes[1] - xExtremes[0]; + var leftPercent = Math.max(0, (xWindowLimits[0] - xExtremes[0])/xRange); + var rightPercent = Math.max(0, (xExtremes[1] - xWindowLimits[1])/xRange); + var leftCoord = this.canvasRect_.x + this.canvasRect_.w*leftPercent; + var rightCoord = this.canvasRect_.x + this.canvasRect_.w*(1 - rightPercent); + var handleTop = Math.max(this.canvasRect_.y, this.canvasRect_.y + (this.canvasRect_.h - this.leftZoomHandle_.height)/2); + var halfHandleWidth = this.leftZoomHandle_.width/2; + this.leftZoomHandle_.style.left = (leftCoord - halfHandleWidth) + 'px'; + this.leftZoomHandle_.style.top = handleTop + 'px'; + this.rightZoomHandle_.style.left = (rightCoord - halfHandleWidth) + 'px'; + this.rightZoomHandle_.style.top = this.leftZoomHandle_.style.top; + + this.leftZoomHandle_.style.visibility = 'visible'; + this.rightZoomHandle_.style.visibility = 'visible'; +}; + +/** + * @private + * Draws the interactive layer in the foreground canvas. + */ +rangeSelector.prototype.drawInteractiveLayer_ = function() { + var ctx = this.fgcanvas_ctx_; + ctx.clearRect(0, 0, this.canvasRect_.w, this.canvasRect_.h); + var margin = 1; + var width = this.canvasRect_.w - margin; + var height = this.canvasRect_.h - margin; + var zoomHandleStatus = this.getZoomHandleStatus_(); + + ctx.strokeStyle = 'black'; + if (!zoomHandleStatus.isZoomed) { + ctx.beginPath(); + ctx.moveTo(margin, margin); + ctx.lineTo(margin, height); + ctx.lineTo(width, height); + ctx.lineTo(width, margin); + ctx.stroke(); + if (this.iePanOverlay_) { + this.iePanOverlay_.style.display = 'none'; + } + } else { + var leftHandleCanvasPos = Math.max(margin, zoomHandleStatus.leftHandlePos - this.canvasRect_.x); + var rightHandleCanvasPos = Math.min(width, zoomHandleStatus.rightHandlePos - this.canvasRect_.x); + + ctx.fillStyle = 'rgba(240, 240, 240, 0.6)'; + ctx.fillRect(0, 0, leftHandleCanvasPos, this.canvasRect_.h); + ctx.fillRect(rightHandleCanvasPos, 0, this.canvasRect_.w - rightHandleCanvasPos, this.canvasRect_.h); + + ctx.beginPath(); + ctx.moveTo(margin, margin); + ctx.lineTo(leftHandleCanvasPos, margin); + ctx.lineTo(leftHandleCanvasPos, height); + ctx.lineTo(rightHandleCanvasPos, height); + ctx.lineTo(rightHandleCanvasPos, margin); + ctx.lineTo(width, margin); + ctx.stroke(); + + if (this.isUsingExcanvas_) { + this.iePanOverlay_.style.width = (rightHandleCanvasPos - leftHandleCanvasPos) + 'px'; + this.iePanOverlay_.style.left = leftHandleCanvasPos + 'px'; + this.iePanOverlay_.style.height = height + 'px'; + this.iePanOverlay_.style.display = 'inline'; + } + } +}; + +/** + * @private + * Returns the current zoom handle position information. + * @return {Object} The zoom handle status. + */ +rangeSelector.prototype.getZoomHandleStatus_ = function() { + var halfHandleWidth = this.leftZoomHandle_.width/2; + var leftHandlePos = parseFloat(this.leftZoomHandle_.style.left) + halfHandleWidth; + var rightHandlePos = parseFloat(this.rightZoomHandle_.style.left) + halfHandleWidth; + return { + leftHandlePos: leftHandlePos, + rightHandlePos: rightHandlePos, + isZoomed: (leftHandlePos - 1 > this.canvasRect_.x || rightHandlePos + 1 < this.canvasRect_.x+this.canvasRect_.w) + }; +}; + +return rangeSelector; + +})(); |