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firka: highlight current value on grade chart left axis

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This commit is contained in:
4831c0
2026-02-28 11:48:09 +01:00
parent 826312b503
commit 12cce27e9d
1 changed files with 59 additions and 31 deletions
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90
firka/lib/ui/phone/widgets/grade_chart.dart
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@@ -27,6 +27,42 @@ class _GradeChartState extends State<GradeChart> {
late final List<FlSpot> spots;
double? _subjectAverageInList(List<Grade> grades, String subjectUid) {
double weightedSum = 0;
double totalWeight = 0;
for (final g in grades) {
if (g.subject.uid != subjectUid) continue;
final v = g.numericValue;
final w = g.weightPercentage;
if (v != null && w != null) {
final effectiveValue = g.valueType.name == "Szazalekos"
? percentageToGrade(v).toDouble()
: v.toDouble();
weightedSum += effectiveValue * w;
totalWeight += w;
}
}
return totalWeight > 0 ? weightedSum / totalWeight : null;
}
double _runningSubjectAverage(List<Grade> sortedGrades, int upToInclusive) {
final sublist = sortedGrades.sublist(
0,
(upToInclusive + 1).clamp(0, sortedGrades.length),
);
final subjectUids = sublist.map((g) => g.subject.uid).toSet();
double sum = 0;
int count = 0;
for (final uid in subjectUids) {
final avg = _subjectAverageInList(sublist, uid);
if (avg != null) {
sum += avg;
count++;
}
}
return count > 0 ? sum / count : 0;
}
@override
void initState() {
super.initState();
@@ -40,24 +76,13 @@ class _GradeChartState extends State<GradeChart> {
}
spots = [];
// for (int i = 0; i < sortedGrades.length; i++) {
// final grade = sortedGrades[i];
// if (grade.numericValue != null) {
// final partialAvg = calculateAverage(sortedGrades.sublist(0, i + 1));
// spots.add(FlSpot(i.toDouble(), partialAvg));
// }
// }
spots.add(FlSpot(1, 1.3));
spots.add(FlSpot(2, 1.0));
spots.add(FlSpot(3, 2.0));
spots.add(FlSpot(4, 1.75));
spots.add(FlSpot(5, 1.8));
spots.add(FlSpot(6, 2.17));
spots.add(FlSpot(7, 2.57));
spots.add(FlSpot(8, 3.00));
spots.add(FlSpot(9, 4.00));
spots.add(FlSpot(10, 4.89));
for (var i = 0; i < sortedGrades.length; i++) {
final grade = sortedGrades[i];
if (grade.numericValue != null && grade.weightPercentage != null) {
final partialAvg = _runningSubjectAverage(sortedGrades, i);
spots.add(FlSpot(i.toDouble(), partialAvg));
}
}
if (spots.isEmpty) {
spots = [const FlSpot(0, 0)];
@@ -153,15 +178,12 @@ class _GradeChartState extends State<GradeChart> {
} else {
gradeColor = getGradeColor(0);
}
if (!_tooltipActive || _tooltipY == null) {
return buildCircle(
text: text,
bgColor: appStyle.colors.card,
textColor: appStyle.colors.textPrimary.withValues(alpha: 0.2),
);
}
final currentValue = _tooltipActive && _tooltipY != null
? _tooltipY!.round()
: spots.last.y.round();
final isActive = text == currentValue.toString();
if (text == _tooltipY!.round().toString()) {
if (isActive) {
return buildCircle(
text: text,
bgColor: gradeColor.withAlpha(38),
@@ -179,8 +201,11 @@ class _GradeChartState extends State<GradeChart> {
}
LineChartData avgData() {
final firstX = spots.first.x;
final lastX = spots.last.x;
var firstX = spots.first.x;
var lastX = spots.last.x;
if (firstX == lastX) {
lastX = firstX + 1;
}
Color colorForY(double y) {
switch (y.round()) {
@@ -239,7 +264,10 @@ class _GradeChartState extends State<GradeChart> {
fontWeight: FontWeight.bold,
fontSize: 14,
);
return LineTooltipItem(touchedSpot.y.toString(), textStyle);
return LineTooltipItem(
touchedSpot.y.toStringAsFixed(2),
textStyle,
);
}).toList();
},
),
@@ -320,8 +348,8 @@ class _GradeChartState extends State<GradeChart> {
lineBarsData: [
LineChartBarData(
spots: spots,
isCurved: false,
isCurved: true,
curveSmoothness: 0.35,
showingIndicators: _touchedIndex != null ? [_touchedIndex!] : [],
gradient: LinearGradient(
colors: [for (final s in spots) colorForY(s.y)],