119 lines
3.5 KiB
Dart
119 lines
3.5 KiB
Dart
/// Renders Timeline Axis pieces for the FocusFlow Flutter timeline.
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library;
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import 'package:flutter/material.dart';
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import '../../theme/focus_flow_tokens.dart';
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import 'timeline_geometry.dart';
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/// Time labels and rail shown beside the compact timeline.
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class TimelineAxis extends StatelessWidget {
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/// Creates a timeline axis for [geometry].
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const TimelineAxis({required this.geometry, this.topInset = 12, super.key});
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/// Geometry used to position labels and tick marks.
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final TimelineGeometry geometry;
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/// Vertical inset before the first timeline tick.
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final double topInset;
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@override
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Widget build(BuildContext context) {
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final ticks = geometry.ticks();
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return SizedBox(
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width: FocusFlowTokens.timelineRailWidth,
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height: geometry.totalHeight + topInset + 24,
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child: Stack(
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children: [
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Positioned(
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left: 92,
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top: topInset,
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bottom: 0,
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child: Container(width: 2, color: FocusFlowTokens.rail),
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),
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for (final tick in ticks)
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Positioned(
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top: tick.y + topInset - 10,
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left: 0,
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width: 86,
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child: Text(
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tick.label,
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maxLines: 1,
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softWrap: false,
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overflow: TextOverflow.visible,
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textAlign: TextAlign.right,
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style: TextStyle(
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color: tick.major
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? FocusFlowTokens.textPrimary
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: FocusFlowTokens.textFaint,
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fontSize: tick.major ? 16 : 14,
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fontWeight: tick.major ? FontWeight.w600 : FontWeight.w400,
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),
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),
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),
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for (final tick in ticks.where((tick) => tick.major))
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Positioned(
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top: tick.y + topInset - 6,
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left: 87,
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child: const DecoratedBox(
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decoration: BoxDecoration(
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color: FocusFlowTokens.rail,
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shape: BoxShape.circle,
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),
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child: SizedBox(width: 12, height: 12),
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),
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),
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],
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),
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);
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}
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}
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/// Background grid aligned to timeline tick marks.
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class TimelineGrid extends StatelessWidget {
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/// Creates a timeline grid for [geometry].
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const TimelineGrid({required this.geometry, this.topInset = 12, super.key});
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/// Geometry used to position grid lines.
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final TimelineGeometry geometry;
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/// Vertical inset before the first timeline tick.
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final double topInset;
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@override
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Widget build(BuildContext context) {
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return CustomPaint(
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painter: _TimelineGridPainter(geometry: geometry, topInset: topInset),
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size: Size.infinite,
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);
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}
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}
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class _TimelineGridPainter extends CustomPainter {
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const _TimelineGridPainter({required this.geometry, required this.topInset});
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final TimelineGeometry geometry;
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final double topInset;
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@override
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void paint(Canvas canvas, Size size) {
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final paint = Paint()
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..color = FocusFlowTokens.gridLine
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..strokeWidth = 1;
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for (final tick in geometry.ticks()) {
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canvas.drawLine(
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Offset(0, tick.y + topInset),
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Offset(size.width, tick.y + topInset),
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paint
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..color = tick.major
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? FocusFlowTokens.gridLine.withValues(alpha: 0.72)
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: FocusFlowTokens.gridLine,
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);
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}
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}
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@override
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bool shouldRepaint(covariant _TimelineGridPainter oldDelegate) {
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return oldDelegate.geometry != geometry || oldDelegate.topInset != topInset;
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}
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}
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