adding textures to each segment

README.md

@@ -76,6 +76,7 @@ PieChart(
       ),
       // gradientList: ---To add gradient colors---
       // emptyColorGradient: ---Empty Color gradient---
+      // textureList: ---To add image textures----
     )
 ```
 
@@ -135,6 +136,57 @@ emptyColorGradient: [
 
 <img src="https://raw.githubusercontent.com/apgapg/pie_chart/master/res/s11.png"  height = "400" alt="PieChart">
 
+### Image Texures
+
+Pie Chart supports image textures as colors. Just pass `textureList` instead of `colorList` or `gradientList` to add textures to each section.
+
+```dart
+Future<ui.Image> _loadImage(String path) async {
+  final image = await rootBundle.load(path);
+  return await decodeImageFromList(image.buffer.asUint8List());
+}
+
+Future<List<ImageShader>> _loadImageShaders(List<String> paths) async {
+  List<ImageShader> images = [];
+  for (String path in paths) {
+    ui.Image img = await _loadImage(path);
+    images.add(ImageShader(img, TileMode.mirror, TileMode.mirror, Matrix4.identity().storage));
+  }
+  return images;
+}
+
+FutureBuilder<List<ImageShader>>(
+  future: _loadImageShaders([
+    'textures/tile.jpg',
+    'textures/tile4.jpg',
+    'textures/tile2.jpg',
+    'textures/tile3.jpg',
+  ]),
+  builder: (context, textures) => textures.hasData ? SizedBox(
+    height: 300,
+    width: 300,
+    child: PieChart(
+      dataMap: {
+        "Flutter": 5,
+        "React": 2,
+        "Xamarin": 2,
+        "Ionic": 3,
+      },
+      textureList: textures.data,
+      legendOptions: LegendOptions(
+        showLegends: false
+      ),
+      chartValuesOptions: ChartValuesOptions(
+        showChartValuesInPercentage: true,
+      ),
+    ),
+  ) : Text('loading'),
+),
+```
+
+<img src="https://raw.githubusercontent.com/apgapg/pie_chart/master/res/s13.jpg"  height = "400" alt="PieChart">
+
+
 ### Base Chart Color
 
 Add a base pie-chart color via:

lib/src/chart_painter.dart

@@ -26,6 +26,7 @@ class PieChartPainter extends CustomPainter {
   final Color? emptyColor;
   final List<List<Color>>? gradientList;
   final List<Color>? emptyColorGradient;
+  final List<ImageShader?>? textureList;
   final DegreeOptions degreeOptions;
   final Color baseChartColor;
   final double? totalValue;
@@ -54,6 +55,7 @@ class PieChartPainter extends CustomPainter {
     this.emptyColor,
     this.gradientList,
     this.emptyColorGradient,
+    this.textureList,
     this.degreeOptions = const DegreeOptions(),
     required this.baseChartColor,
     this.totalValue,
@@ -65,14 +67,16 @@ class PieChartPainter extends CustomPainter {
       _total = totalValue!;
     }
 
-    if (gradientList?.isEmpty ?? true) {
+    if ((gradientList?.isEmpty ?? true) && (textureList?.isEmpty ?? true)) {
       for (int i = 0; i < values.length; i++) {
         final paint = Paint()..color = getColor(colorList, i);
         setPaintProps(paint);
         _paintList.add(paint);
       }
     }
 
+
+
     _totalAngle = angleFactor * doublePi * drawPercentage;
     _subParts = values;
     _prevAngle = degreeToRadian(degreeOptions.initialAngle);
@@ -136,6 +140,7 @@ class PieChartPainter extends CustomPainter {
       final isGradientPresent = gradientList?.isNotEmpty ?? false;
       final isNonGradientElementPresent =
           (_subParts.length - (gradientList?.length ?? 0)) > 0;
+      final isTexturePresent = textureList?.isNotEmpty ?? false;
 
       for (int i = 0; i < _subParts.length; i++) {
         if (isGradientPresent) {
@@ -152,6 +157,22 @@ class PieChartPainter extends CustomPainter {
                 emptyColorGradient: emptyColorGradient!),
           );
           paint.shader = gradient.createShader(boundingSquare);
+          if (chartType == ChartType.ring) {
+            paint.style = PaintingStyle.stroke;
+            paint.strokeWidth = strokeWidth!;
+            paint.strokeCap = StrokeCap.butt;
+          }
+          canvas.drawArc(
+            boundingSquare,
+            _prevAngle,
+            endAngle,
+            useCenter,
+            paint,
+          );
+        } else if (isTexturePresent) {
+          final endAngle = (((_totalAngle) / _total) * _subParts[i]);
+          final paint = Paint()..shader = textureList![i];
+
           if (chartType == ChartType.ring) {
             paint.style = PaintingStyle.stroke;
             paint.strokeWidth = strokeWidth!;

lib/src/pie_chart.dart

@@ -27,6 +27,7 @@ class PieChart extends StatefulWidget {
     this.emptyColor = Colors.grey,
     this.gradientList,
     this.emptyColorGradient = const [Colors.black26, Colors.black54],
+    this.textureList,
     this.legendLabels = const {},
     Key? key,
     this.degreeOptions = const DegreeOptions(),
@@ -41,6 +42,7 @@ class PieChart extends StatefulWidget {
   final double chartLegendSpacing;
   final List<Color> colorList;
   final List<List<Color>>? gradientList;
+  final List<ImageShader?>? textureList;
   @Deprecated('use degreeOptions. instead')
   final double? initialAngleInDegree;
   final Function? formatChartValues;
@@ -146,6 +148,7 @@ class _PieChartState extends State<PieChart>
               emptyColor: widget.emptyColor,
               gradientList: widget.gradientList,
               emptyColorGradient: widget.emptyColorGradient,
+              textureList: widget.textureList,
               degreeOptions: widget.degreeOptions.copyWith(
                 // because we've deprecated initialAngleInDegree,
                 // we want the old value to be used if it's not null