Test

imaNNeo · Jan 7, 2025 · 34630a2 · 34630a2
1 parent 71dbf1b
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Showing 4 changed files with 88 additions and 8 deletions.
diff --git a/example/lib/presentation/samples/line/line_chart_sample2.dart b/example/lib/presentation/samples/line/line_chart_sample2.dart
@@ -162,16 +162,47 @@ class _LineChartSample2State extends State<LineChartSample2> {
       maxX: 11,
       minY: 0,
       maxY: 6,
+      errorIndicatorData: const FlErrorIndicatorData(
+        show: true,
+      ),
       lineBarsData: [
         LineChartBarData(
           spots: const [
-            FlSpot(0, 3),
-            FlSpot(2.6, 2),
-            FlSpot(4.9, 5),
-            FlSpot(6.8, 3.1),
-            FlSpot(8, 4),
-            FlSpot(9.5, 3),
-            FlSpot(11, 4),
+            FlSpot(
+              0,
+              3,
+              yError: FlErrorRange.symmetric(5),
+            ),
+            FlSpot(
+              2.6,
+              2,
+              yError: FlErrorRange.symmetric(5),
+            ),
+            FlSpot(
+              4.9,
+              5,
+              yError: FlErrorRange.symmetric(5),
+            ),
+            FlSpot(
+              6.8,
+              3.1,
+              yError: FlErrorRange.symmetric(5),
+            ),
+            FlSpot(
+              8,
+              4,
+              yError: FlErrorRange.symmetric(5),
+            ),
+            FlSpot(
+              9.5,
+              3,
+              yError: FlErrorRange.symmetric(5),
+            ),
+            FlSpot(
+              11,
+              4,
+              yError: FlErrorRange.symmetric(5),
+            ),
           ],
           isCurved: true,
           gradient: LinearGradient(

diff --git a/example/macos/Podfile.lock b/example/macos/Podfile.lock
@@ -26,7 +26,7 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   FlutterMacOS: 8f6f14fa908a6fb3fba0cd85dbd81ec4b251fb24
-  package_info_plus: fa739dd842b393193c5ca93c26798dff6e3d0e0c
+  package_info_plus: 12f1c5c2cfe8727ca46cbd0b26677728972d9a5b
   path_provider_foundation: 2b6b4c569c0fb62ec74538f866245ac84301af46
   url_launcher_macos: 5f437abeda8c85500ceb03f5c1938a8c5a705399
 

diff --git a/lib/src/chart/line_chart/line_chart_painter.dart b/lib/src/chart/line_chart/line_chart_painter.dart
@@ -149,6 +149,22 @@ class LineChartPainter extends AxisChartPainter<LineChartData> {
       canvasWrapper.restore();
     }
 
+    // Draw error indicators
+    for (var i = 0; i < data.lineBarsData.length; i++) {
+      final barData = data.lineBarsData[i];
+
+      if (!barData.show) {
+        continue;
+      }
+
+      drawErrorIndicatorData(
+        canvasWrapper,
+        barData,
+        data.errorIndicatorData,
+        holder,
+      );
+    }
+
     // Draw touch tooltip on most top spot
     for (var i = 0; i < data.showingTooltipIndicators.length; i++) {
       var tooltipSpots = data.showingTooltipIndicators[i];
@@ -357,6 +373,30 @@ class LineChartPainter extends AxisChartPainter<LineChartData> {
     }
   }
 
+  @visibleForTesting
+  void drawErrorIndicatorData(
+    CanvasWrapper canvasWrapper,
+    LineChartBarData barData,
+    FlErrorIndicatorData errorIndicatorData,
+    PaintHolder<LineChartData> holder,
+  ) {
+    if (!errorIndicatorData.show) {
+      return;
+    }
+
+    final viewSize = canvasWrapper.size;
+
+    for (var i = 0; i < barData.spots.length; i++) {
+      final spot = barData.spots[i];
+      if (spot.isNotNull()) {
+        final x = getPixelX(spot.x, viewSize, holder);
+        final y = getPixelY(spot.y, viewSize, holder);
+        final painter = errorIndicatorData.errorPainter;
+        canvasWrapper.drawErrorIndicator(painter, spot, Offset(x, y));
+      }
+    }
+  }
+
   @visibleForTesting
   void drawTouchedSpotsIndicator(
     CanvasWrapper canvasWrapper,

diff --git a/lib/src/utils/canvas_wrapper.dart b/lib/src/utils/canvas_wrapper.dart
@@ -16,6 +16,7 @@ class CanvasWrapper {
     this.canvas,
     this.size,
   );
+
   final Canvas canvas;
   final Size size;
 
@@ -118,6 +119,14 @@ class CanvasWrapper {
     painter.draw(canvas, spot, offset);
   }
 
+  void drawErrorIndicator(
+    FlSpotErrorRangePainter painter,
+    FlSpot origin,
+    Offset offset,
+  ) {
+    painter.draw(canvas, offset, origin);
+  }
+
   /// Handles performing multiple draw actions rotated.
   void drawRotated({
     required Size size,