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/* Polar Area Chart — frontend */ |
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( function () { |
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function parseHex(hex, alpha) { |
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hex = (hex||'#6c3fb5').replace('#',''); |
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if (hex.length===3) hex = hex[0]+hex[0]+hex[1]+hex[1]+hex[2]+hex[2]; |
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var r=parseInt(hex.substring(0,2),16),g=parseInt(hex.substring(2,4),16),b=parseInt(hex.substring(4,6),16); |
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return 'rgba('+r+','+g+','+b+','+(alpha/100).toFixed(2)+')'; |
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} |
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|
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function renderAll() { |
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document.querySelectorAll('.bkpca-wrap[data-chart]').forEach(function(wrap) { |
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var canvas = wrap.querySelector('.bkpca-canvas'); |
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if (!canvas || canvas._bkpcaInit) return; |
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canvas._bkpcaInit = true; |
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try { |
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var d = JSON.parse(wrap.getAttribute('data-chart')); |
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var labels = (d.labels||'').split(',').map(function(s){return s.trim();}); |
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var vals = (d.values||'').split(',').map(function(s){return parseFloat(s.trim())||0;}); |
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var cols = (d.colors||'').split(',').map(function(s){return s.trim();}); |
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var alpha = d.fillAlpha||75; |
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var bgColors = cols.map(function(c){return parseHex(c, alpha);}); |
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new window.Chart(canvas, { |
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type: 'polarArea', |
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data: { labels: labels, datasets: [{ data: vals, backgroundColor: bgColors, borderColor: cols, borderWidth: 2 }] }, |
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options: { |
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responsive: true, |
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plugins: { |
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legend: { display: !!d.showLegend, position: d.legendPos||'bottom' }, |
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title: { display: !!(d.showTitle && d.chartTitle), text: d.chartTitle||'' } |
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} |
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} |
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}); |
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} catch(e) { console.warn('bkpca chart error', e); } |
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}); |
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} |
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|
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function init() { |
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if (window.Chart) { renderAll(); return; } |
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var s = document.createElement('script'); |
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s.src = 'https://cdn.jsdelivr.net/npm/chart.js@4.4.3/dist/chart.umd.min.js'; |
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s.onload = renderAll; |
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document.head.appendChild(s); |
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} |
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|
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if (document.readyState === 'loading') { |
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document.addEventListener('DOMContentLoaded', init); |
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} else { |
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init(); |
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} |
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}() ); |
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