386 lines
15 KiB
Dart
386 lines
15 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:fl_chart/fl_chart.dart';
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class WeightChart extends StatelessWidget {
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final List<FlSpot> dataPoints;
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final double targetWeight;
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final String title;
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final Color lineColor;
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final Color gradientStartColor;
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final Color gradientEndColor;
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final String unit;
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const WeightChart({
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super.key,
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required this.dataPoints,
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required this.targetWeight,
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this.title = 'Berat Real-time',
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this.lineColor = Colors.blue,
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this.gradientStartColor = Colors.blue,
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this.gradientEndColor = Colors.cyan,
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this.unit = 'g',
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});
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@override
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Widget build(BuildContext context) {
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// Filter data yang valid untuk ditampilkan (ganti nilai 0 dengan nilai sebelumnya)
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List<FlSpot> displayPoints = [];
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double? lastValidValue;
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for (var spot in dataPoints) {
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if (spot.y > 10) {
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// Data valid, gunakan nilai asli
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displayPoints.add(spot);
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lastValidValue = spot.y;
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} else if (lastValidValue != null) {
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// Data invalid (0), gunakan nilai terakhir yang valid
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displayPoints.add(FlSpot(spot.x, lastValidValue));
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}
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}
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// Jika masih kosong setelah filter, gunakan data asli
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if (displayPoints.isEmpty) {
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displayPoints = dataPoints;
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}
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// Hitung min dan max Y berdasarkan data yang akan ditampilkan
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double minY = 0;
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double maxY = 200;
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if (displayPoints.isNotEmpty) {
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// Cari nilai min dan max dari data yang akan ditampilkan
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double dataMin = displayPoints.map((e) => e.y).reduce((a, b) => a < b ? a : b);
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double dataMax = displayPoints.map((e) => e.y).reduce((a, b) => a > b ? a : b);
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// Jika ada target, sertakan dalam perhitungan
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if (targetWeight > 0) {
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dataMin = dataMin < targetWeight ? dataMin : targetWeight;
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dataMax = dataMax > targetWeight ? dataMax : targetWeight;
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}
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// Pastikan minY tidak negatif dan ada padding yang cukup
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double range = dataMax - dataMin;
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double padding = range > 0 ? range * 0.25 : 50; // 25% padding atau minimal 50
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minY = (dataMin - padding).clamp(0, double.infinity);
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maxY = dataMax + padding;
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// Pastikan ada range minimal 100
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if (maxY - minY < 100) {
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double center = (maxY + minY) / 2;
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minY = (center - 50).clamp(0, double.infinity);
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maxY = center + 50;
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}
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// Debug log
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print('📊 Weight Chart: min=$minY, max=$maxY, dataMin=$dataMin, dataMax=$dataMax, displayPoints=${displayPoints.length}/${dataPoints.length}');
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} else if (targetWeight > 0) {
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// Kalau belum ada data, gunakan target
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minY = 0;
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maxY = (targetWeight * 1.5).clamp(100, double.infinity);
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} else {
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// Fallback default
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minY = 0;
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maxY = 200;
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}
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return Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(16),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.05),
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blurRadius: 10,
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offset: const Offset(0, 2),
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),
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],
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Container(
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padding: const EdgeInsets.all(8),
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decoration: BoxDecoration(
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color: lineColor.withOpacity(0.1),
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borderRadius: BorderRadius.circular(8),
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),
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child: Icon(Icons.scale, color: lineColor, size: 20),
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),
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const SizedBox(width: 10),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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title,
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style: const TextStyle(
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fontSize: 14,
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fontWeight: FontWeight.bold,
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color: Colors.black87,
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),
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),
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Row(
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children: [
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Text(
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dataPoints.isNotEmpty
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? '${dataPoints.last.y.toStringAsFixed(0)} $unit'
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: '-- $unit',
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style: TextStyle(
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fontSize: 12,
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color: Colors.grey.shade600,
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),
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),
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const SizedBox(width: 8),
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Icon(Icons.arrow_forward, size: 12, color: Colors.grey.shade400),
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const SizedBox(width: 4),
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Text(
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'${targetWeight.toStringAsFixed(0)} $unit',
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style: TextStyle(
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fontSize: 12,
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fontWeight: FontWeight.bold,
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color: Colors.green.shade600,
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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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Container(
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padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
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decoration: BoxDecoration(
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color: lineColor.withOpacity(0.1),
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borderRadius: BorderRadius.circular(12),
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),
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child: Row(
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children: [
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Icon(
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Icons.fiber_manual_record,
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color: lineColor,
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size: 8,
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),
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const SizedBox(width: 4),
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const Text(
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'LIVE',
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style: TextStyle(
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fontSize: 10,
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fontWeight: FontWeight.bold,
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color: Colors.black54,
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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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const SizedBox(height: 16),
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SizedBox(
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height: 200, // Naik dari 180 jadi 200 biar lebih lapang
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child: dataPoints.isEmpty
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? Center(
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child: Text(
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'Menunggu data...',
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style: TextStyle(
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fontSize: 12,
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color: Colors.grey.shade400,
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),
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),
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)
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: Padding(
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padding: const EdgeInsets.only(left: 8, right: 8), // Tambah padding kiri kanan
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child: LineChart(
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LineChartData(
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gridData: FlGridData(
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show: true,
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drawVerticalLine: false,
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horizontalInterval: 50,
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getDrawingHorizontalLine: (value) {
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// Garis target lebih tebal
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if ((value - targetWeight).abs() < 5) {
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return FlLine(
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color: Colors.green.shade300,
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strokeWidth: 2,
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dashArray: [5, 5],
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);
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}
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return FlLine(
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color: Colors.grey.shade200,
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strokeWidth: 1,
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);
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},
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),
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titlesData: FlTitlesData(
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show: true,
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rightTitles: const AxisTitles(
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sideTitles: SideTitles(showTitles: false),
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),
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topTitles: const AxisTitles(
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sideTitles: SideTitles(showTitles: false),
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),
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bottomTitles: AxisTitles(
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sideTitles: SideTitles(
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showTitles: true,
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reservedSize: 30,
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interval: 5,
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getTitlesWidget: (value, meta) {
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return Padding(
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padding: const EdgeInsets.only(top: 8.0),
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child: Text(
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'${value.toInt()}s',
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style: const TextStyle(
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fontSize: 10,
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color: Colors.grey,
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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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leftTitles: AxisTitles(
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sideTitles: SideTitles(
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showTitles: true,
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interval: 50,
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reservedSize: 50, // Turun ke 50, karena masalahnya bukan disini
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getTitlesWidget: (value, meta) {
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// Tandai target dengan warna hijau
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final isTarget = (value - targetWeight).abs() < 5;
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return Text(
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'${value.toInt()}$unit',
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style: TextStyle(
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fontSize: 10,
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color: isTarget ? Colors.green : Colors.grey,
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fontWeight: isTarget ? FontWeight.bold : FontWeight.normal,
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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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borderData: FlBorderData(
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show: true,
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border: Border(
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bottom: BorderSide(color: Colors.grey.shade300),
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left: BorderSide(color: Colors.grey.shade300),
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),
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),
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minX: displayPoints.isNotEmpty
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? displayPoints.first.x
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: 0,
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maxX: displayPoints.isNotEmpty
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? displayPoints.last.x
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: 10,
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minY: minY,
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maxY: maxY,
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extraLinesData: ExtraLinesData(
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horizontalLines: [
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HorizontalLine(
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y: targetWeight,
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color: Colors.green.shade400,
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strokeWidth: 2,
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dashArray: [8, 4],
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label: HorizontalLineLabel(
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show: true,
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alignment: Alignment.topRight,
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padding: const EdgeInsets.only(right: 5, bottom: 5),
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style: TextStyle(
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color: Colors.green.shade700,
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fontSize: 10,
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fontWeight: FontWeight.bold,
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),
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labelResolver: (line) => 'Target',
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),
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),
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],
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),
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lineBarsData: [
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LineChartBarData(
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spots: displayPoints,
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isCurved: true,
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curveSmoothness: 0.3,
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color: lineColor,
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barWidth: 3,
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isStrokeCapRound: true,
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dotData: FlDotData(
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show: true,
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getDotPainter: (spot, percent, barData, index) {
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// Hanya tampilkan dot di titik terakhir
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if (index == displayPoints.length - 1) {
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return FlDotCirclePainter(
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radius: 5,
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color: Colors.white,
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strokeWidth: 3,
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strokeColor: lineColor,
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);
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}
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return FlDotCirclePainter(
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radius: 0,
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color: Colors.transparent,
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);
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},
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),
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belowBarData: BarAreaData(
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show: true,
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gradient: LinearGradient(
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colors: [
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gradientStartColor.withOpacity(0.3),
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gradientEndColor.withOpacity(0.1),
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Colors.transparent,
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],
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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),
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),
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),
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],
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lineTouchData: LineTouchData(
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touchTooltipData: LineTouchTooltipData(
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getTooltipColor: (touchedSpot) => Colors.black87,
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tooltipRoundedRadius: 8,
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fitInsideHorizontally: true,
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fitInsideVertically: true,
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tooltipPadding: const EdgeInsets.all(8),
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tooltipMargin: 8,
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getTooltipItems: (List<LineBarSpot> touchedSpots) {
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return touchedSpots.map((LineBarSpot touchedSpot) {
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final remaining = touchedSpot.y - targetWeight;
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return LineTooltipItem(
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'${touchedSpot.y.toStringAsFixed(0)} $unit\n',
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const TextStyle(
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color: Colors.white,
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fontWeight: FontWeight.bold,
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fontSize: 12,
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),
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children: [
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TextSpan(
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text: remaining > 0
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? 'Sisa ${remaining.toStringAsFixed(0)} $unit'
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: 'Target tercapai!',
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style: TextStyle(
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color: remaining > 0
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? Colors.orange.shade200
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: Colors.green.shade200,
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fontSize: 10,
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),
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),
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],
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);
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}).toList();
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},
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),
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handleBuiltInTouches: true,
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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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);
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}
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}
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