zoned_line_chart 1.1.4

A highly customizable line chart widget for Flutter featuring colored zone backgrounds, automatic axis ticking, smooth Catmull-Rom curves, and interactive tap-to-inspect tooltips.

1.1.4

• Fixed README install version to match the latest published version.

1.1.3

• Updated README: documented zone auto-extension behavior, updated install version, and noted widened intl compatibility.

1.1.2

• Fixed white gaps when data points fall outside predefined zone boundaries. Areas beyond zones are now filled with the nearest zone's color. Gaps between non-contiguous zones are also filled by splitting at the midpoint.

1.1.1

• Widened intl dependency to >=0.19.0 <1.0.0 for compatibility with projects using intl 0.19.x or 0.20.x.

1.1.0

• Collapsible chart: top-right button to fold/unfold the entire chart area.
• Data filter chips: quickly show the most recent 5, 10, 20, 50, or all data points.
• Practitioner target lines (TargetLine): horizontal dashed black lines with labels, included in the legend.
• Two-line X-axis labels: date on top, time below (for time/date axis modes).
• Smart label visibility: all labels shown for ≤7 points; 4 evenly-spaced labels for larger datasets.
• Default line color changed to #1860A8.

1.0.0

• Initial release.
• CustomLineChart widget with smooth Catmull-Rom line rendering.
• Configurable Y-axis range, unit, and automatic "nice number" tick generation.
• X-axis support for time (HH:mm), date (MM-dd), number, and string modes.
• Colored zone backgrounds (ChartZone) for visual threshold indication.
• Tap-to-inspect interaction with tooltip card showing timestamp, value, and metadata notes.
• Auto-skipping of overlapping X-axis labels.
• Zone legend rendered below the chart.