opt.: cpu line chart

lib/data/model/server/cpu.dart

@@ -7,7 +7,7 @@ import 'package:toolbox/data/res/status.dart';
 
 const _kCap = 30;
 
-class Cpus extends TimeSeq<List<SingleCoreCpu>> {
+class Cpus extends TimeSeq<List<SingleCpuCore>> {
   Cpus(super.init1, super.init2);
 
   @override
@@ -72,7 +72,10 @@ class Cpus extends TimeSeq<List<SingleCoreCpu>> {
   final _spots = <Fifo<FlSpot>>[];
   List<Fifo<FlSpot>> get spots => _spots;
   void _updateSpots() {
-    for (var i = 1; i < now.length; i++) {
+    /// Only update the entire core when [coresCount] > 4, or the chart will be too crowded
+    final onlyCalcSingle = coresCount > 4;
+    final maxIdx = onlyCalcSingle ? 1 : coresCount;
+    for (var i = onlyCalcSingle ? 0 : 1; i < maxIdx; i++) {
       if (i >= _spots.length) {
         _spots.add(Fifo(capacity: _kCap));
       } else {
@@ -112,7 +115,7 @@ class Cpus extends TimeSeq<List<SingleCoreCpu>> {
   }
 }
 
-class SingleCoreCpu extends TimeSeqIface<SingleCoreCpu> {
+class SingleCpuCore extends TimeSeqIface<SingleCpuCore> {
   final String id;
   final int user;
   final int sys;
@@ -122,7 +125,7 @@ class SingleCoreCpu extends TimeSeqIface<SingleCoreCpu> {
   final int irq;
   final int softirq;
 
-  SingleCoreCpu(
+  SingleCpuCore(
     this.id,
     this.user,
     this.sys,
@@ -136,10 +139,10 @@ class SingleCoreCpu extends TimeSeqIface<SingleCoreCpu> {
   int get total => user + sys + nice + idle + iowait + irq + softirq;
 
   @override
-  bool same(SingleCoreCpu other) => id == other.id;
+  bool same(SingleCpuCore other) => id == other.id;
 
-  static List<SingleCoreCpu> parse(String raw) {
-    final List<SingleCoreCpu> cpus = [];
+  static List<SingleCpuCore> parse(String raw) {
+    final List<SingleCpuCore> cpus = [];
 
     for (var item in raw.split('\n')) {
       if (item == '') break;
@@ -147,7 +150,7 @@ class SingleCoreCpu extends TimeSeqIface<SingleCoreCpu> {
       if (id == null) continue;
       final matches = item.replaceFirst(id, '').trim().split(' ');
       cpus.add(
-        SingleCoreCpu(
+        SingleCpuCore(
           id,
           int.parse(matches[0]),
           int.parse(matches[1]),
@@ -178,7 +181,7 @@ Cpus parseBsdCpu(String raw) {
 
   final init = InitStatus.cpus;
   init.add([
-    SingleCoreCpu('cpu', percents[0].toInt(), 0, 0,
+    SingleCpuCore('cpu', percents[0].toInt(), 0, 0,
         percents[2].toInt() + percents[1].toInt(), 0, 0, 0),
   ]);
   return init;

lib/data/model/server/server_status_update_req.dart

@@ -69,7 +69,7 @@ Future<ServerStatus> _getLinuxStatus(ServerStatusUpdateReq req) async {
   }
 
   try {
-    final cpus = SingleCoreCpu.parse(StatusCmdType.cpu.find(segments));
+    final cpus = SingleCpuCore.parse(StatusCmdType.cpu.find(segments));
     req.ss.cpu.update(cpus);
   } catch (e, s) {
     Loggers.parse.warning(e, s);

lib/data/res/status.dart

@@ -9,7 +9,7 @@ import '../model/server/conn.dart';
 import '../model/server/system.dart';
 
 abstract final class InitStatus {
-  static SingleCoreCpu get _initOneTimeCpuStatus => SingleCoreCpu(
+  static SingleCpuCore get _initOneTimeCpuStatus => SingleCpuCore(
         'cpu',
         0,
         0,

lib/view/page/server/detail/misc.dart

@@ -37,17 +37,24 @@ enum _NetSortType {
   }
 }
 
-Widget _buildLineChart(List<List<FlSpot>> spots, Range<double> x) {
+Widget _buildLineChart(
+  List<List<FlSpot>> spots,
+  Range<double> x, {
+  String? tooltipPrefix,
+  bool curve = false,
+}) {
   return LineChart(LineChartData(
     lineTouchData: LineTouchData(
       touchTooltipData: LineTouchTooltipData(
-        tooltipPadding: const EdgeInsets.all(8),
+        tooltipPadding: const EdgeInsets.all(5),
         tooltipRoundedRadius: 8,
+        tooltipMargin: 3,
         getTooltipItems: (List<LineBarSpot> touchedSpots) {
           return touchedSpots.map((e) {
             return LineTooltipItem(
-              'CPU${e.barIndex}: ${e.y.toStringAsFixed(2)}',
+              '$tooltipPrefix${e.barIndex}: ${e.y.toStringAsFixed(2)}',
               const TextStyle(
+                fontSize: 12,
                 fontWeight: FontWeight.bold,
               ),
             );
@@ -101,7 +108,7 @@ Widget _buildLineChart(List<List<FlSpot>> spots, Range<double> x) {
     lineBarsData: spots
         .map((e) => LineChartBarData(
               spots: e,
-              isCurved: false,
+              isCurved: curve,
               barWidth: 2,
               isStrokeCapRound: true,
               color: primaryColor,

lib/view/page/server/detail/view.dart

@@ -193,11 +193,16 @@ class _ServerDetailPageState extends State<ServerDetailPage>
         ),
         children: [
           Padding(
-            padding: const EdgeInsets.symmetric(horizontal: 17, vertical: 7),
+            padding: const EdgeInsets.symmetric(horizontal: 17, vertical: 13),
             child: SizedBox(
               height: 137,
               width: _media.size.width - 26 - 34,
-              child: _buildLineChart(ss.cpu.spots, ss.cpu.rangeX),
+              child: _buildLineChart(
+                ss.cpu.spots,
+                ss.cpu.rangeX,
+                tooltipPrefix: 'CPU',
+                curve: true,
+              ),
             ),
           ),
         ],