// version: 2014-08-16 /** * o--------------------------------------------------------------------------------o * | This file is part of the RGraph package - you can learn more at: | * | | * | http://www.rgraph.net | * | | * | This package is licensed under the Creative Commons BY-NC license. That means | * | that for non-commercial purposes it's free to use and for business use there's | * | a 99 GBP per-company fee to pay. You can read the full license here: | * | | * | http://www.rgraph.net/license | * o--------------------------------------------------------------------------------o */ RGraph = window.RGraph || {isRGraph: true}; /** * The chart constructor. This function sets up the object. It takes the ID (the HTML attribute) of the canvas as the * first argument and the data as the second. If you need to change this, you can. * * NB: If tooltips are ever implemented they must go below the use event listeners!! * * @param string id The canvas tag ID * @param number min The minimum value * @param number max The maximum value * @param number value The value reported by the thermometer */ RGraph.Thermometer = function (conf) { /** * Allow for object config style */ if ( typeof conf === 'object' && typeof conf.min === 'number' && typeof conf.max === 'number' && typeof conf.id === 'string') { var parseConfObjectForOptions = true; // Set this so the config is parsed (at the end of the constructor) } else { var conf = { id: arguments[0], min: arguments[1], max: arguments[2], value: arguments[3] } } this.id = conf.id; this.canvas = document.getElementById(this.id); this.context = this.canvas.getContext ? this.canvas.getContext('2d') : null; this.canvas.__object__ = this; this.uid = RGraph.CreateUID(); this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.CreateUID(); this.colorsParsed = false; this.type = 'thermometer'; this.isRGraph = true; this.min = conf.min; this.max = conf.max; this.value = RGraph.stringsToNumbers(conf.value); this.coords = []; this.graphArea = []; this.currentValue = null; this.bulbRadius = 0; this.bulbTopRadius = 0; this.bulbTopCenterX = 0 this.bulbTopCenterY = 0; this.coordsText = []; this.original_colors = []; this.firstDraw = true; // After the first draw this will be false this.properties = { 'chart.colors': ['Gradient(#c00:red:#f66:#fcc)'], 'chart.gutter.left': 15, 'chart.gutter.right': 15, 'chart.gutter.top': 15, 'chart.gutter.bottom': 15, 'chart.ticksize': 5, 'chart.text.color': 'black', 'chart.text.font': 'Arial', 'chart.text.size': 10, 'chart.units.pre': '', 'chart.units.post': '', 'chart.zoom.factor': 1.5, 'chart.zoom.fade.in': true, 'chart.zoom.fade.out': true, 'chart.zoom.hdir': 'right', 'chart.zoom.vdir': 'down', 'chart.zoom.frames': 25, 'chart.zoom.delay': 16.666, 'chart.zoom.shadow': true, 'chart.zoom.background': true, 'chart.title': '', 'chart.title.side': '', 'chart.title.side.bold': true, 'chart.title.side.font': null, 'chart.shadow': true, 'chart.shadow.offsetx': 0, 'chart.shadow.offsety': 0, 'chart.shadow.blur': 15, 'chart.shadow.color': 'gray', 'chart.resizable': false, 'chart.contextmenu': null, 'chart.adjustable': false, 'chart.value.label': true, 'chart.value.label.decimals': null, 'chart.value.label.thousand': ',', 'chart.value.label.point': '.', 'chart.labels.count': 5, 'chart.scale.visible': false, 'chart.scale.decimals': 0, 'chart.annotatable': false, 'chart.annotate.color': 'black', 'chart.scale.decimals': 0, 'chart.scale.point': '.', 'chart.scale.thousand': ',', 'chart.tooltips': null, 'chart.tooltips.highlight': true, 'chart.tooltips.effect': 'fade', 'chart.tooltips.event': 'onclick', 'chart.highlight.stroke': 'rgba(0,0,0,0)', 'chart.highlight.fill': 'rgba(255,255,255,0.7)' } /** * A simple check that the browser has canvas support */ if (!this.canvas) { alert('[THERMOMETER] No canvas support'); return; } /** * The thermometer can only have one data point so only this.$0 needs to be created */ this.$0 = {} /** * Translate half a pixel for antialiasing purposes - but only if it hasn't beeen * done already */ if (!this.canvas.__rgraph_aa_translated__) { this.context.translate(0.5,0.5); this.canvas.__rgraph_aa_translated__ = true; } // Short variable names var RG = RGraph; var ca = this.canvas; var co = ca.getContext('2d'); var prop = this.properties; var jq = jQuery; var pa = RG.Path; var win = window; var doc = document; var ma = Math; /** * "Decorate" the object with the generic effects if the effects library has been included */ if (RG.Effects && typeof RG.Effects.decorate === 'function') { RG.Effects.decorate(this); } /** * A setter. * * @param name string The name of the property to set * @param value mixed The value of the property */ this.set = this.Set = function (name) { var value = typeof arguments[1] === 'undefined' ? null : arguments[1]; /** * the number of arguments is only one and it's an * object - parse it for configuration data and return. */ if (arguments.length === 1 && typeof name === 'object') { RG.parseObjectStyleConfig(this, name); return this; } /** * This should be done first - prepend the property name with "chart." if necessary */ if (name.substr(0,6) != 'chart.') { name = 'chart.' + name; } /** * Change of name */ if (name == 'chart.ylabels.count') { name = 'chart.labels.count'; } prop[name.toLowerCase()] = value; return this; }; /** * A getter. * * @param name string The name of the property to get */ this.get = this.Get = function (name) { /** * This should be done first - prepend the property name with "chart." if necessary */ if (name.substr(0,6) != 'chart.') { name = 'chart.' + name; } return prop[name]; }; /** * Draws the thermometer */ this.draw = this.Draw = function () { /** * Fire the custom RGraph onbeforedraw event (which should be fired before the chart is drawn) */ RG.FireCustomEvent(this, 'onbeforedraw'); /** * Parse the colors. This allows for simple gradient syntax */ if (!this.colorsParsed) { this.parseColors(); // Don't want to do this again this.colorsParsed = true; } /** * Set the current value */ this.currentValue = this.value; /** * Stop this growing uncontrollably */ this.coordsText = []; /** * This is new in May 2011 and facilitates indiviual gutter settings, * eg chart.gutter.left */ this.gutterLeft = prop['chart.gutter.left']; this.gutterRight = prop['chart.gutter.right']; this.gutterTop = prop['chart.gutter.top']; this.gutterBottom = prop['chart.gutter.bottom']; /** * Get the scale */ this.scale2 = RG.getScale2(this, { 'max':this.max, 'min':this.min, 'strict':true, 'scale.thousand':prop['chart.scale.thousand'], 'scale.point':prop['chart.scale.point'], 'scale.decimals':prop['chart.scale.decimals'], 'ylabels.count':prop['chart.labels.count'], 'scale.round':prop['chart.scale.round'], 'units.pre': prop['chart.units.pre'], 'units.post': prop['chart.units.post'] }); /** * Draw the background */ this.DrawBackground(); /** * Draw the bar that represents the value */ this.DrawBar(); /** * Draw the tickmarks/hatchmarks */ this.DrawTickMarks(); /** * Draw the label */ this.DrawLabels(); /** * Draw the title */ if (prop['chart.title']) { this.DrawTitle(); } /** * Draw the side title */ if (prop['chart.title.side']) { this.DrawSideTitle(); } /** * This function enables resizing */ if (prop['chart.resizable']) { RG.AllowResizing(this); } /** * Setup the context menu if required */ if (prop['chart.contextmenu']) { RG.ShowContext(this); } /** * This installs the event listeners */ RG.InstallEventListeners(this); /** * Fire the onfirstdraw event */ if (this.firstDraw) { RG.fireCustomEvent(this, 'onfirstdraw'); this.firstDraw = false; this.firstDrawFunc(); } /** * Fire the custom RGraph ondraw event (which should be fired when you have drawn the chart) */ RG.FireCustomEvent(this, 'ondraw'); return this; }; /** * Draws the thermometer itself */ this.drawBackground = this.DrawBackground = function () { var bulbRadius = (ca.width - this.gutterLeft - this.gutterRight) / 2; // This is the radius/x/y of the top "semi-circle" this.bulbTopRadius = (ca.width - this.gutterLeft - this.gutterRight - 24)/ 2 this.bulbTopCenterX = this.gutterLeft + bulbRadius; this.bulbTopCenterY = this.gutterTop + bulbRadius; //This is the radius/x/y of the bottom bulb this.bulbBottomRadius = bulbRadius; this.bulbBottomCenterX = this.gutterLeft + bulbRadius; this.bulbBottomCenterY = ca.height - this.gutterBottom - bulbRadius; // Save the bulbRadius as an object variable this.bulbRadius = bulbRadius; // Draw the black background that becomes the border co.beginPath(); co.fillStyle = 'black'; if (prop['chart.shadow']) { RG.SetShadow(this, prop['chart.shadow.color'], prop['chart.shadow.offsetx'], prop['chart.shadow.offsety'], prop['chart.shadow.blur']); } co.fillRect(this.gutterLeft + 12,this.gutterTop + bulbRadius,ca.width - this.gutterLeft - this.gutterRight - 24, ca.height - this.gutterTop - this.gutterBottom - bulbRadius - bulbRadius); // Bottom bulb co.arc(this.bulbBottomCenterX, this.bulbBottomCenterY, bulbRadius, 0, RG.TWOPI, 0); // Top bulb (which is actually a semi-circle) co.arc(this.bulbTopCenterX,this.bulbTopCenterY,this.bulbTopRadius,0,RG.TWOPI,0); co.fill(); // Save the radius of the top semi circle RG.NoShadow(this); // Draw the white inner content background that creates the border co.beginPath(); co.fillStyle = 'white'; co.fillRect(this.gutterLeft + 12 + 1,this.gutterTop + bulbRadius,ca.width - this.gutterLeft - this.gutterRight - 24 - 2,ca.height - this.gutterTop - this.gutterBottom - bulbRadius - bulbRadius); co.arc(this.gutterLeft + bulbRadius, ca.height - this.gutterBottom - bulbRadius, bulbRadius - 1, 0, RG.TWOPI, 0); co.arc(this.gutterLeft + bulbRadius,this.gutterTop + bulbRadius,((ca.width - this.gutterLeft - this.gutterRight - 24)/ 2) - 1,0,RG.TWOPI,0); co.fill(); // Draw the bottom content of the thermometer co.beginPath(); co.fillStyle = prop['chart.colors'][0]; co.arc(this.gutterLeft + bulbRadius, ca.height - this.gutterBottom - bulbRadius, bulbRadius - 1, 0, RG.TWOPI, 0); co.rect(this.gutterLeft + 12 + 1, ca.height - this.gutterBottom - bulbRadius - bulbRadius,ca.width - this.gutterLeft - this.gutterRight - 24 - 2, bulbRadius); co.fill(); // Save the X/Y/width/height this.graphArea[0] = this.gutterLeft + 12 + 1; this.graphArea[1] = this.gutterTop + bulbRadius; this.graphArea[2] = ca.width - this.gutterLeft - this.gutterRight - 24 - 2; this.graphArea[3] = (ca.height - this.gutterBottom - bulbRadius - bulbRadius) - (this.graphArea[1]); }; /** * This draws the bar that indicates the value of the thermometer */ this.drawBar = this.DrawBar = function () { var barHeight = ((this.value - this.min) / (this.max - this.min)) * this.graphArea[3]; // Draw the actual bar that indicates the value co.beginPath(); co.fillStyle = prop['chart.colors'][0]; // This solves an issue with ExCanvas showing a whiite cutout in the chart if (RGraph.ISOLD) { co.arc(this.bulbBottomCenterX, this.bulbBottomCenterY, this.bulbBottomRadius - 1, 0, RG.TWOPI, false) } co.rect(this.graphArea[0], this.graphArea[1] + this.graphArea[3] - barHeight, this.graphArea[2], barHeight + 2); co.fill(); this.coords[0] = [this.graphArea[0],this.graphArea[1] + this.graphArea[3] - barHeight,this.graphArea[2],barHeight]; }; /** * Draws the tickmarks of the thermometer */ this.drawTickMarks = this.DrawTickMarks = function () { co.strokeStyle = 'black' var ticksize = prop['chart.ticksize']; // Left hand side tickmarks co.beginPath(); for (var i=this.graphArea[1]; i<=(this.graphArea[1] + this.graphArea[3]); i += (this.graphArea[3] / 10)) { co.moveTo(this.gutterLeft + 12, Math.round(i)); co.lineTo(this.gutterLeft + 12 + ticksize, Math.round(i)); } co.stroke(); // Right hand side tickmarks co.beginPath(); for (var i=this.graphArea[1]; i<=(this.graphArea[1] + this.graphArea[3]); i += (this.graphArea[3] / 10)) { co.moveTo(ca.width - (this.gutterRight + 12), Math.round(i)); co.lineTo(ca.width - (this.gutterRight + 12 + ticksize), Math.round(i)); } co.stroke(); }; /** * Draws the labels of the thermometer. Now (4th August 2011) draws * the scale too */ this.drawLabels = this.DrawLabels = function () { /** * This draws draws the label that sits at the top of the chart */ if (prop['chart.value.label']) { co.fillStyle = prop['chart.text.color']; // Weird... var text = prop['chart.scale.visible'] ? RG.number_format(this, this.value.toFixed(typeof prop['chart.value.label.decimals'] == 'number' ? prop['chart.value.label.decimals'] : prop['chart.scale.decimals']) ) : RG.number_format(this, this.value.toFixed(typeof prop['chart.value.label.decimals'] == 'number' ? prop['chart.value.label.decimals'] : prop['chart.scale.decimals']), prop['chart.units.pre'], prop['chart.units.post'] ); RG.Text2(this, {'font': prop['chart.text.font'], 'size': prop['chart.text.size'], 'x':this.gutterLeft + this.bulbRadius, 'y': this.coords[0][1] + 7, 'text': text, 'valign':'top', 'halign':'center', 'bounding':true, 'boundingFill':'white', 'tag': 'value.label' }); } /** * Draw the scale if requested */ if (prop['chart.scale.visible']) { this.DrawScale(); } }; /** * Draws the title */ this.drawTitle = this.DrawTitle = function () { co.fillStyle = prop['chart.text.color']; RG.Text2(this, {'font': prop['chart.text.font'], 'size': prop['chart.text.size'] + 2, 'x':this.gutterLeft + ((ca.width - this.gutterLeft - this.gutterRight) / 2), 'y': this.gutterTop, 'text': String(prop['chart.title']), 'valign':'center', 'halign':'center', 'bold':true, 'tag': 'title' }); }; /** * Draws the title */ this.drawSideTitle = this.DrawSideTitle = function () { var font = prop['chart.title.side.font'] ? prop['chart.title.side.font'] : prop['chart.text.font']; var size = prop['chart.title.side.size'] ? prop['chart.title.side.size'] : prop['chart.text.size'] + 2; co.fillStyle = prop['chart.text.color']; RG.Text2(this, {'font': font, 'size': size + 2, 'x':this.gutterLeft - 3, 'y': ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop, 'text': String(prop['chart.title.side']), 'valign':'center', 'halign':'center', 'angle':270, 'bold':prop['chart.title.side.bold'], 'tag': 'title.side' }); }; /** * Draw the scale if requested */ this.drawScale = this.DrawScale = function () { var numLabels = prop['chart.labels.count']; // The -1 is so that the number of labels tallies with what is displayed var step = (this.max - this.min) / numLabels; co.fillStyle = prop['chart.text.color']; var font = prop['chart.text.font']; var size = prop['chart.text.size']; var units_pre = prop['chart.units.pre']; var units_post = prop['chart.units.post']; var decimals = prop['chart.scale.decimals']; for (var i=1; i<=numLabels; ++i) { var x = ca.width - this.gutterRight; var y = ca.height - this.gutterBottom - (2 * this.bulbRadius) - ((this.graphArea[3] / numLabels) * i); var text = RG.number_format(this, String((this.min + (i * step)).toFixed(decimals)), units_pre, units_post); RG.Text2(this, {'font':font, 'size':size, 'x':x-6, 'y':y, 'text':text, 'valign':'center', 'tag': 'scale' }); } // Draw zero RG.Text2(this, {'font':font, 'size':size, 'x':x-6, 'y':ca.height - this.gutterBottom - (2 * this.bulbRadius), 'text':RG.number_format(this, (this.min).toFixed(decimals),units_pre,units_post), 'valign':'center', 'tag': 'scale' }); }; /** * Returns the focused/clicked bar * * @param event e The event object */ this.getShape = this.getBar = function (e) { for (var i=0; i= left && mouseX <= (left + width) && mouseY >= top && mouseY <= (top + height + this.bulbBottomRadius)) // The bulbBottomRadius is added as the rect and the bulb don't fully cover the red bit || RG.getHypLength(this.bulbBottomCenterX, this.bulbBottomCenterY, mouseX, mouseY) <= this.bulbBottomRadius) { var tooltip = RG.parseTooltipText ? RG.parseTooltipText(prop['chart.tooltips'], i) : ''; return {0: this, 'object': this, 1: left, 'x': left, 2: top, 'y': top, 3: width, 'width': width, 4: height, 'height': height, 5: i, 'index': i, 'tooltip': tooltip }; } } return null; }; /** * This function returns the value that the mouse is positioned t, regardless of * the actual indicated value. * * @param object e The event object (or it can also be an two element array containing the X/Y coords) */ this.getValue = function (arg) { if (arg.length == 2) { var mouseX = arg[0]; var mouseY = arg[1]; } else { var mouseCoords = RGraph.getMouseXY(arg); var mouseX = mouseCoords[0]; var mouseY = mouseCoords[1]; } var value = this.graphArea[3] - (mouseY - this.graphArea[1]); value = (value / this.graphArea[3]) * (this.max - this.min); value = value + this.min; value = Math.max(value, this.min); value = Math.min(value, this.max); return value; }; /** * Each object type has its own Highlight() function which highlights the appropriate shape * * @param object shape The shape to highlight */ this.highlight = this.Highlight = function (shape) { if (prop['chart.tooltips.highlight']) { // Add the new highlight //RGraph.Highlight.Rect(this, shape); co.beginPath(); co.strokeStyle = prop['chart.highlight.stroke']; co.fillStyle = prop['chart.highlight.fill']; co.rect(shape['x'],shape['y'],shape['width'],shape['height'] + this.bulbBottomRadius); co.arc(this.bulbBottomCenterX, this.bulbBottomCenterY, this.bulbBottomRadius - 1, 0, RG.TWOPI, false); co.stroke; co.fill(); } }; /** * The getObjectByXY() worker method. Don't call this - call: * * RGraph.ObjectRegistry.getObjectByXY(e) * * @param object e The event object */ this.getObjectByXY = function (e) { var mouseXY = RGraph.getMouseXY(e); if ( mouseXY[0] > this.gutterLeft && mouseXY[0] < (ca.width - this.gutterRight) && mouseXY[1] >= this.gutterTop && mouseXY[1] <= (ca.height - this.gutterBottom) ) { return this; } }; /** * This method handles the adjusting calculation for when the mouse is moved * * @param object e The event object */ this.adjusting_mousemove = this.Adjusting_mousemove = function (e) { /** * Handle adjusting for the Thermometer */ if (prop['chart.adjustable'] && RG.Registry.Get('chart.adjusting') && RG.Registry.Get('chart.adjusting').uid == this.uid) { var mouseXY = RGraph.getMouseXY(e); var value = this.getValue(e); if (typeof(value) == 'number') { // Fire the onadjust event RG.FireCustomEvent(this, 'onadjust'); this.value = Number(value.toFixed(prop['chart.scale.decimals'])); RG.redrawCanvas(ca); } } }; /** * This function positions a tooltip when it is displayed * * @param obj object The chart object * @param int x The X coordinate specified for the tooltip * @param int y The Y coordinate specified for the tooltip * @param objec tooltip The tooltips DIV element */ this.positionTooltip = function (obj, x, y, tooltip, idx) { var coordX = obj.coords[tooltip.__index__][0]; var coordY = obj.coords[tooltip.__index__][1]; var coordW = obj.coords[tooltip.__index__][2]; var coordH = obj.coords[tooltip.__index__][3]; var canvasXY = RGraph.getCanvasXY(ca); var gutterLeft = obj.gutterLeft; var gutterTop = obj.gutterTop; var width = tooltip.offsetWidth; var height = tooltip.offsetHeight; // Set the top position tooltip.style.left = 0; tooltip.style.top = canvasXY[1] + coordY - height - 7 + 'px'; // By default any overflow is hidden tooltip.style.overflow = ''; // The arrow var img = new Image(); img.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAFCAYAAACjKgd3AAAARUlEQVQYV2NkQAN79+797+RkhC4M5+/bd47B2dmZEVkBCgcmgcsgbAaA9GA1BCSBbhAuA/AagmwQPgMIGgIzCD0M0AMMAEFVIAa6UQgcAAAAAElFTkSuQmCC'; img.style.position = 'absolute'; img.id = '__rgraph_tooltip_pointer__'; img.style.top = (tooltip.offsetHeight - 2) + 'px'; tooltip.appendChild(img); // Reposition the tooltip if at the edges: // LEFT edge if ((canvasXY[0] + coordX - (width / 2)) < 10) { tooltip.style.left = (canvasXY[0] + coordX - (width * 0.1)) + (coordW / 2) + 'px'; img.style.left = ((width * 0.1) - 8.5) + 'px'; // RIGHT edge } else if ((canvasXY[0] + coordX + (width / 2)) > doc.body.offsetWidth) { tooltip.style.left = canvasXY[0] + coordX - (width * 0.9) + (coordW / 2) + 'px'; img.style.left = ((width * 0.9) - 8.5) + 'px'; // Default positioning - CENTERED } else { tooltip.style.left = (canvasXY[0] + coordX + (coordW / 2) - (width * 0.5)) + 'px'; img.style.left = ((width * 0.5) - 8.5) + 'px'; } }; /** * Returns the appropriate Y coord for a value * * @param number value The value to return the coord for */ this.getYCoord = function (value) { if (value > this.max || value < this.min) { return null; } var y = (this.graphArea[1] + this.graphArea[3]) - (((value - this.min) / (this.max - this.min)) * this.graphArea[3]); return y; }; /** * This returns true/false as to whether the cursor is over the chart area. * The cursor does not necessarily have to be over the bar itself. */ this.overChartArea = function (e) { var mouseXY = RG.getMouseXY(e); var mouseX = mouseXY[0]; var mouseY = mouseXY[1]; // Is the mouse in the "graphArea"? // ( with a little extra height added) if ( mouseX >= this.graphArea[0] && mouseX <= (this.graphArea[0] + this.graphArea[2]) && mouseY >= this.graphArea[1] && mouseY <= (this.graphArea[1] + this.graphArea[3] + this.bulbRadius) ) { return true; } // Is the mouse over the bottom bulb? if (RG.getHypLength(this.bulbBottomCenterX, this.bulbBottomCenterY, mouseX, mouseY) <= this.bulbRadius) { return true; } // Is the mouse over the semi-circle at the top? if (RG.getHypLength(this.bulbTopCenterX, this.bulbTopCenterY, mouseX, mouseY) <= this.bulbTopRadius) { return true; } return false; }; /** * This allows for easy specification of gradients */ this.parseColors = function () { // Save the original colors so that they can be restored when the canvas is reset if (this.original_colors.length === 0) { this.original_colors['chart.colors'] = RG.array_clone(prop['chart.colors']); } var colors = prop['chart.colors']; for (var i=0; i