101 lines
2.8 KiB
PHP
101 lines
2.8 KiB
PHP
<div style="position: relative; width: 800px; height: 400px;">
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<div id="current-period" style="text-align: center; position: absolute; top: 0; left: 0; right: 0; z-index: 10; font-size: 14px; background-color: rgba(255, 255, 255, 0.7);"></div>
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<canvas id="graph_<?= $graph_name ?>" style="margin-top: 20px;"></canvas>
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</div>
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<script>
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var ctx = document.getElementById('graph_<?= $graph_name ?>').getContext('2d');
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var chartData0 = <?php echo json_encode($data0); ?>;
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var chartData1 = <?php echo json_encode($data1); ?>;
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var labels = chartData0.map(function(item) {
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return item.date;
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});
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var values0 = chartData0.map(function(item) {
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return item.value;
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});
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var values1 = chartData1.map(function(item) {
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return item.value;
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});
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var graph_<?= $graph_name ?> = new Chart(ctx, {
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type: 'line',
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data: {
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labels: labels,
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datasets: [
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{
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label: '<?= $graph_data0_label ?? '' ?>',
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data: values0,
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borderColor: 'rgba(75, 192, 192, 1)',
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borderWidth: 1,
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fill: false
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},
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{
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label: '<?= $graph_data1_label ?? '' ?>',
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data: values1,
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borderColor: 'rgba(255, 99, 132, 1)',
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borderWidth: 1,
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fill: false
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}
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]
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},
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options: {
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layout: {
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padding: {
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top: 30
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}
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},
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scales: {
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x: {
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type: 'time',
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time: {
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unit: 'day'
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}
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},
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y: {
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beginAtZero: true
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}
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},
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plugins: {
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zoom: {
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pan: {
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enabled: true,
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mode: 'x'
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},
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zoom: {
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enabled: true,
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mode: 'x'
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}
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},
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legend: {
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position: 'bottom',
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labels: {
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boxWidth: 20,
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padding: 30
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}
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}
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}
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}
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});
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// Add dynamic label to show the currently displayed time period
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var currentPeriodLabel = document.getElementById('current-period');
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function updatePeriodLabel(chart) {
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var startDate = chart.scales.x.min;
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var endDate = chart.scales.x.max;
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currentPeriodLabel.innerHTML = 'Currently displaying: ' + new Date(startDate).toLocaleDateString() + ' - ' + new Date(endDate).toLocaleDateString();
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}
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// Attach the update function to the 'zoom' event (to be used with the time period links)
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graph_<?= $graph_name ?>.options.plugins.zoom.onZoom = function({ chart }) {
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updatePeriodLabel(chart);
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};
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// Update the label initially when the chart is rendered
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updatePeriodLabel(graph_<?= $graph_name ?>);
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</script>
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