crystal_charts 0.2.1

A comprehensive Flutter charting library with Area, Bar, Column, Heatmap, Sunburst, Dual-Axes, and Horizontal Bar charts. Features interactive tooltips, smooth animations, and customizable themes.

0.2.1

• Add legend support (showLegend, legendPosition) to ColumnChart.
• Add dynamic Y-axis label width to ColumnChart (no more truncation with …).
• Fix SunburstChart unnecessary re-animation by adding value equality (==/hashCode) to ChartTreeNode.
• Dismiss tooltip when tapping outside the chart area on all chart types.

0.2.0

• Add tap-based tooltip and highlight for all chart types on iOS/touch devices.
• Fix BarChart hit test accuracy by passing full layout parameters (yScale, unit, valueScale, etc.).
• Add TextDecoration.none to tooltip text styles to prevent unwanted underlines on iOS.

0.1.3

• Add dynamic axis label sizing and X-axis label rotation for BarChart.

0.1.2

• Change calendar heatmap month selector labels from English abbreviations (Jan–Dec) to numeric (1–12).

0.1.1

• Fix axis title and axis label overlap on all chart types.
• Fix axis labels wrapping to multiple lines (enforce single-line rendering).
• Fix DualAxes right Y-axis title overlapping with labels.
• Increase axis title padding (20px → 24px) and X-axis title offset (22px → 26px).

0.1.0

• Initial release.
• Area Chart — Gradient-filled area chart with smooth curve support.
• Bar Chart — Grouped vertical bar chart.
• Column Chart — Column chart with grouping and stacking support.
• Dual Axes Chart — Dual-axis chart with independent left/right Y axes (line / area / column).
• Heatmap Chart — Category-by-category heatmap with color scale legend.
• Horizontal Bar Chart — Horizontal bar chart.
• Sunburst Chart — Sunburst chart with drill-down support.
• Calendar Heatmap — High-performance calendar heatmap based on Canvas (CustomPainter).
• Common features: Hover tooltips, animations, customizable themes (light/dark), value formatter (unit, scaling, thousands separator).