fix: Axis labels disappearing due to incorrect padding calculation in title filtering

lib/src/chart/base/axis_chart/side_titles/side_titles_widget.dart

@@ -213,10 +213,19 @@ class _SideTitlesWidgetState extends State<SideTitlesWidget> {
     List<AxisSideTitleMetaData> axisPositions,
     AxisSide side,
   ) {
+    final titlesPadding = titlesData.allSidesPadding;
+    final borderPadding = widget.axisChartData.borderData.allSidesPadding;
+    final rotatedParentSize = widget.parentSize.rotateByQuarterTurns(
+      widget.axisChartData.rotationQuarterTurns,
+    );
     final chartSize = Size(
-      widget.parentSize.width - thisSidePaddingTotal,
-      widget.parentSize.height - thisSidePaddingTotal,
-    ).rotateByQuarterTurns(widget.axisChartData.rotationQuarterTurns);
+      rotatedParentSize.width -
+          titlesPadding.horizontal -
+          borderPadding.horizontal,
+      rotatedParentSize.height -
+          titlesPadding.vertical -
+          borderPadding.vertical,
+    );
     // Add 1 pixel to the chart's edges to avoid clipping the last title.
     final chartRect = (Offset.zero & chartSize).inflate(1);
 

test/chart/base/axis_chart/side_titles/side_titles_widget_test.dart

@@ -229,6 +229,38 @@ void main() {
     );
   }
 
+  LineChartData createLineChartDataWithLargeBottomReservedSize({
+    required int rotationQuarterTurns,
+  }) {
+    return lineChartDataBase.copyWith(
+      rotationQuarterTurns: rotationQuarterTurns,
+      titlesData: FlTitlesData(
+        leftTitles: AxisTitles(
+          sideTitles: SideTitles(
+            showTitles: true,
+            reservedSize: 30,
+            interval: 1,
+            getTitlesWidget: (value, meta) {
+              return Text('L-${value.toInt()}');
+            },
+          ),
+        ),
+        topTitles: const AxisTitles(),
+        rightTitles: const AxisTitles(),
+        bottomTitles: AxisTitles(
+          sideTitles: SideTitles(
+            showTitles: true,
+            reservedSize: 190,
+            interval: 1,
+            getTitlesWidget: (value, meta) {
+              return const SizedBox.shrink();
+            },
+          ),
+        ),
+      ),
+    );
+  }
+
   testWidgets(
     'LineChart with no titles',
     (tester) async {
@@ -436,4 +468,51 @@ void main() {
       expect(find.byType(TextButton), findsOneWidget);
     },
   );
+
+  testWidgets(
+    'LineChart left titles remain visible with large cross-axis reserved size (unrotated and rotated)',
+    (tester) async {
+      Future<void> pumpChart({
+        required Size parentSize,
+        required int rotationQuarterTurns,
+      }) async {
+        await tester.pumpWidget(
+          MaterialApp(
+            home: Scaffold(
+              body: Center(
+                child: SizedBox(
+                  width: parentSize.width,
+                  height: parentSize.height,
+                  child: SideTitlesWidget(
+                    side: AxisSide.left,
+                    axisChartData:
+                        createLineChartDataWithLargeBottomReservedSize(
+                      rotationQuarterTurns: rotationQuarterTurns,
+                    ),
+                    parentSize: parentSize,
+                  ),
+                ),
+              ),
+            ),
+          ),
+        );
+      }
+
+      await pumpChart(
+        parentSize: const Size(180, 400),
+        rotationQuarterTurns: 0,
+      );
+      for (var i = 0; i <= 10; i++) {
+        expect(find.text('L-$i'), findsOneWidget);
+      }
+
+      await pumpChart(
+        parentSize: const Size(400, 180),
+        rotationQuarterTurns: 1,
+      );
+      for (var i = 0; i <= 10; i++) {
+        expect(find.text('L-$i'), findsOneWidget);
+      }
+    },
+  );
 }