235 lines
7.2 KiB
JavaScript
235 lines
7.2 KiB
JavaScript
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(function(Chart) {
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var helpers = Chart.helpers;
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var plugins = Chart.plugins;
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Chart.defaults.global.animation.duration = 1000;
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Chart.defaults._set('linearGauge', {
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scale: {
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type: 'linearGauge',
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horizontal: false,
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range: {
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startValue: -100,
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endValue: 500
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},
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responsive: true,
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font: {
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fontName: 'Arial',
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fontSize: 12
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},
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axisWidth: 6,
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ticks: {
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majorTicks: {
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interval: 100,
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height: 1,
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}
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},
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scaleLabel: {
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display: true,
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interval: 100,
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units: '',
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customValues: [],
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offset: -10,
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color: '#777b80'
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}
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},
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padding: {
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top: 0,
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bottom: 0,
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left: 0,
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right: 0
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},
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tooltips: {
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callbacks: {
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label: function(tooltipItem, data) {
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var label = data.datasets[tooltipItem.datasetIndex].label || '';
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if (label) {
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label += ': ';
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}
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label += Math.round(data.datasets[tooltipItem.datasetIndex].data[0] * 100) / 100;
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return label;
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}
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}
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},
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legend: {
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display: true,
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labels: {
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fontColor: 'rgb(0, 0, 0)'
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},
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position: 'bottom'
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}
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});
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Chart.controllers.linearGauge = Chart.DatasetController.extend({
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dataElementType: Chart.elements.Gaugerect,
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initialize: function() {
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var me = this;
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var meta;
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Chart.DatasetController.prototype.initialize.apply(me, arguments);
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meta = me.getMeta();
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},
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linkScales: helpers.noop,
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update: function(reset) {
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var me = this;
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var rects = me.getMeta().data;
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var i, ilen;
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me.datashifts = 0;
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for (i = 0, ilen = rects.length; i < ilen; ++i) {
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me.updateElement(rects[i], i, me.datashifts);
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me.datashifts += 10;
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}
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},
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updateElement: function(rectangle, index, reset) {
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var me = this;
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var chart = me.chart;
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var meta = me.getMeta();
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var dataset = me.getDataset();
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var custom = rectangle.custom || {};
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var rectangleOptions = chart.options.elements.rectangle;
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var gaugeOptions = chart.options.elements.gaugerect;
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rectangle._Scale = me.getScaleForId(chart.options.scale.id || 'gaugescale');
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rectangle._datasetIndex = me.index;
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rectangle._index = index;
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rectangle.rangeColorImage = null;
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// Init element model
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rectangle._model = {
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datasetLabel: dataset.label,
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label: chart.data.labels[index],
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borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleOptions.borderSkipped,
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backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.backgroundColor, index, gaugeOptions.backgroundColor),
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borderColor: custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.borderColor, index, rectangleOptions.borderColor),
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borderWidth: custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.borderWidth, index, rectangleOptions.borderWidth)
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};
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// Set empty view as start point for animation
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if(typeof rectangle._view === 'undefined') rectangle._view = {};
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me.updateElementGeometry(rectangle, index, reset);
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},
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updateElementGeometry: function(rectangle, index, reset) {
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var me = this;
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var model = rectangle._model;
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var start = rectangle._view;
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var dataset = me.getDataset().data;
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var dopt = me.getDataset();
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var chart = me.chart;
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var datasets = chart.data.datasets;
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var gaugeOptions = chart.options.elements.gaugerect;
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var vscale = me.getScaleForId(chart.options.scale.id || 'gaugescale');
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//var base = vscale.getBasePixel();
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var base = vscale.getBase();
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var horizontal = rectangle._Scale.isHorizontal();
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//var ruler = me._ruler || me.getRuler();
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var vpixels = me.calculateBarValuePixels(me.index, index, horizontal);
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model.horizontal = horizontal;
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model.base = base;
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model.head = vpixels.head;
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model.x = horizontal ? vpixels.base : vpixels.offset;
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model.y = horizontal ? (vpixels.offset - (dopt.width || gaugeOptions.width)) : vpixels.head;
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model.height = horizontal ? (dopt.width || gaugeOptions.width) : (vpixels.base - vpixels.head);
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model.width = horizontal ? (vpixels.head - vpixels.base) : (dopt.width || gaugeOptions.width);
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model.value = vscale.getRightValue(datasets[me.index].data[index]);
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model.scaleValue = 0;
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if (horizontal) {
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model.scaleValue = vscale.width / (vscale.options.range.endValue - vscale.options.range.startValue);
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} else {
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model.scaleValue = vscale.height / (vscale.options.range.endValue - vscale.options.range.startValue);
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}
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if(typeof start.x === 'undefined' && typeof start.y === 'undefined'){
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if(horizontal){
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start.x = vpixels.base;
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start.width = 0;
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} else {
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start.y = vpixels.base;
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start.height = 0;
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}
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}
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},
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calculateBarValuePixels: function(datasetIndex, index, horizontal) {
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var me = this;
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var chart = me.chart;
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var scale = me.getScaleForId(chart.options.scale.id || 'gaugescale');
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var datasets = chart.data.datasets;
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var dopt = datasets[datasetIndex];
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var value = scale.getRightValue(datasets[datasetIndex].data[index]);
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var stacked = scale.options.stacked;
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var start = 0;
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var i, imeta, ivalue, base, head, size, offset;
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base = scale.scalePoint(start);
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head = scale.scalePoint(start + value);
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size = (head - base) / 2;
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offset = horizontal ? scale.yCenter - dopt.offset : scale.xCenter + dopt.offset;
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return {
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size: size,
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base: base,
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head: head,
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center: head + size / 2,
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offset: offset
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};
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},
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draw: function() {
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var me = this;
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var chart = me.chart;
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var rects = me.getMeta().data;
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var dataset = me.getDataset();
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var ilen = rects.length;
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var i = 0;
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helpers.canvas.clipArea(chart.ctx, chart.chartArea);
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for (; i < ilen; ++i) {
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if (!isNaN(dataset.data[i])) {
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rects[i].draw();
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}
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}
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helpers.canvas.unclipArea(chart.ctx);
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},
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setHoverStyle: function(rectangle) {
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var dataset = this.chart.data.datasets[rectangle._datasetIndex];
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var index = rectangle._index;
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var custom = rectangle.custom || {};
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var model = rectangle._model;
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model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.valueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
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model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.valueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.getHoverColor(model.borderColor));
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model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.valueAtIndexOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
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},
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removeHoverStyle: function(rectangle) {
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var dataset = this.chart.data.datasets[rectangle._datasetIndex];
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var index = rectangle._index;
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var custom = rectangle.custom || {};
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var model = rectangle._model;
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var rectangleElementOptions = this.chart.options.elements.gaugerect;
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model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor);
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model.borderColor = custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor);
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model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth);
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}
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});
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}).call(this, Chart);
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