← All changes | asset/front.js +43 -2 3.0.3 → 3.0.6 View file →

		@@ -75,11 +75,52 @@
75	75	});
76	76	chart.__gvnHasTime = found;
77	77	return found;
78	78	}
	79	+ // Labels of dates that sit too close together on the axis are moved to a lower line (one below the
	80	+ // other) instead of being drawn over each other. Returns the line level (0, 1, 2) per tick index.
	81	+ function staggerLevels(scale, ticks, withTime) {
	82	+ var sig = ticks.length + ':' + scale.min + ':' + scale.max + ':' + scale.width;
	83	+ if (scale.__gvnStagger && scale.__gvnStagger.sig === sig) return scale.__gvnStagger.levels;
	84	+ var span = (scale.max - scale.min) || 1, width = scale.width || 0, levels = [], px = [], i, j, L, ok;
	85	+ var labelW = (withTime ? 16 : 10) * 7 + 12; // approx. pixel width of "YYYY-MM-DD[ HH:MM]" plus a gap
	86	+ for (i = 0; i < ticks.length; i++) {
	87	+ px[i] = (ticks[i].value - scale.min) / span * width;
	88	+ for (L = 0; L < 3; L++) {
	89	+ ok = true;
	90	+ for (j = 0; j < i; j++) if (levels[j] === L && Math.abs(px[i] - px[j]) < labelW) { ok = false; break; }
	91	+ if (ok) break;
	92	+ }
	93	+ levels[i] = ok ? L : -1; // -1: no free line, the label is hidden (the tooltip still shows the date)
	94	+ }
	95	+ scale.__gvnStagger = { sig: sig, levels: levels };
	96	+ return levels;
	97	+ }
79	98	// scales.x.ticks.callback – "this" is the scale
80		- window.gvnSqlChartsTimeTick = function (value) {
81		- return fmt(value, hasTime(this && this.chart));
	99	+ window.gvnSqlChartsTimeTick = function (value, index, ticks) {
	100	+ var withTime = hasTime(this && this.chart);
	101	+ var label = fmt(value, withTime);
	102	+ if (!this || !ticks || !ticks.length || typeof index !== 'number') return label;
	103	+ var level = staggerLevels(this, ticks, withTime)[index] || 0;
	104	+ if (level < 0) return '';
	105	+ if (!level) return label;
	106	+ var lines = [];
	107	+ for (var k = 0; k < level; k++) lines.push('');
	108	+ lines.push(label);
	109	+ return lines;
	110	+ };
	111	+ // scales.x.afterBuildTicks – label only the dates that exist in the data instead of evenly spaced values
	112	+ window.gvnSqlChartsTimeTicks = function (scale) {
	113	+ var seen = {}, xs = [];
	114	+ (scale.chart.data.datasets || []).forEach(function (ds, i) {
	115	+ if (scale.chart.getDatasetMeta(i).hidden) return;
	116	+ (ds.data || []).forEach(function (p) {
	117	+ if (p && typeof p === 'object' && typeof p.x === 'number' && !seen[p.x]) { seen[p.x] = true; xs.push(p.x); }
	118	+ });
	119	+ });
	120	+ if (!xs.length) return;
	121	+ xs.sort(function (a, b) { return a - b; });
	122	+ scale.ticks = xs.map(function (v) { return { value: v }; });
82	123	};
83	124	// plugins.tooltip.callbacks.title
84	125	window.gvnSqlChartsTimeTooltipTitle = function (items) {
85	126	return items && items.length ? fmt(items[0].parsed.x, hasTime(items[0].chart)) : '';