Firmware2/buildroot/web-ui/data/www/chart.lineargauge.js
2021-04-29 08:45:16 -05:00

235 lines
7.2 KiB
JavaScript

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