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lib/grafico de pizza/widgets/grafico_widgets.dart

@@ -19,12 +19,9 @@ class PieChartWidget extends StatelessWidget {
   Widget build(BuildContext context) {
     return LayoutBuilder(
       builder: (context, constraints) {
-        // 👇 MAGIA ANTI-DESAPARECIMENTO 👇
-        // Vê o espaço real. Se por algum motivo for infinito, assume 100 para não sumir.
         final double w = constraints.maxWidth.isInfinite ? 100.0 : constraints.maxWidth;
         final double h = constraints.maxHeight.isInfinite ? 100.0 : constraints.maxHeight;
         
-        // Pega no menor valor para garantir que o círculo não é cortado
         final double size = math.min(w, h);
         
         return Center(
@@ -32,7 +29,7 @@ class PieChartWidget extends StatelessWidget {
             width: size,
             height: size,
             child: CustomPaint(
-              painter: _PieChartPainter(
+              painter: _DonutChartPainter(
                 victoryPercentage: victoryPercentage,
                 defeatPercentage: defeatPercentage,
                 drawPercentage: drawPercentage,
@@ -48,24 +45,27 @@ class PieChartWidget extends StatelessWidget {
   }
 
   Widget _buildCenterLabels(double size) {
+    final bool hasGames = victoryPercentage > 0 || defeatPercentage > 0 || drawPercentage > 0;
+
     return Column(
       mainAxisSize: MainAxisSize.min,
       mainAxisAlignment: MainAxisAlignment.center,
       children: [
         Text(
-          '${(victoryPercentage * 100).toStringAsFixed(1)}%',
+          // 👇 Casa decimal aplicada aqui!
+          hasGames ? '${(victoryPercentage * 100).toStringAsFixed(1)}%' : '---', 
           style: TextStyle(
-            fontSize: size * 0.18, // O texto cresce ou encolhe com o círculo
+            fontSize: size * (hasGames ? 0.20 : 0.15), 
             fontWeight: FontWeight.bold,
-            color: Colors.white,
+            color: hasGames ? Colors.white : Colors.white54,
           ),
         ),
         SizedBox(height: size * 0.02),
         Text(
-          'Vitórias',
+          hasGames ? 'Vitórias' : 'Sem Jogos', 
           style: TextStyle(
-            fontSize: size * 0.10, 
-            color: Colors.white.withOpacity(0.8),
+            fontSize: size * 0.08, 
+            color: hasGames ? Colors.white70 : Colors.white38,
           ),
         ),
       ],
@@ -73,12 +73,12 @@ class PieChartWidget extends StatelessWidget {
   }
 }
 
-class _PieChartPainter extends CustomPainter {
+class _DonutChartPainter extends CustomPainter {
   final double victoryPercentage;
   final double defeatPercentage;
   final double drawPercentage;
 
-  _PieChartPainter({
+  _DonutChartPainter({
     required this.victoryPercentage,
     required this.defeatPercentage,
     required this.drawPercentage,
@@ -87,59 +87,40 @@ class _PieChartPainter extends CustomPainter {
   @override
   void paint(Canvas canvas, Size size) {
     final center = Offset(size.width / 2, size.height / 2);
-    // Margem de 5% para a linha de fora não ser cortada
-    final radius = (size.width / 2) - (size.width * 0.05); 
+    final radius = (size.width / 2) - (size.width * 0.1); 
+    final strokeWidth = size.width * 0.2;
     
+    if (victoryPercentage == 0 && defeatPercentage == 0 && drawPercentage == 0) {
+      final bgPaint = Paint()
+        ..color = Colors.white.withOpacity(0.05)
+        ..style = PaintingStyle.stroke
+        ..strokeWidth = strokeWidth;
+      canvas.drawCircle(center, radius, bgPaint);
+      return;
+    }
+
     const victoryColor = Colors.green;
     const defeatColor = Colors.red;
-    const drawColor = Colors.yellow;
-    const borderColor = Colors.white30;
-
+    const drawColor = Colors.amber;
+    
     double startAngle = -math.pi / 2; 
-    
-    if (victoryPercentage > 0) {
-      final sweepAngle = 2 * math.pi * victoryPercentage;
-      _drawSector(canvas, center, radius, startAngle, sweepAngle, victoryColor, size.width);
-      startAngle += sweepAngle;
-    }
-    
-    if (drawPercentage > 0) {
-      final sweepAngle = 2 * math.pi * drawPercentage;
-      _drawSector(canvas, center, radius, startAngle, sweepAngle, drawColor, size.width);
-      startAngle += sweepAngle;
-    }
-    
-    if (defeatPercentage > 0) {
-      final sweepAngle = 2 * math.pi * defeatPercentage;
-      _drawSector(canvas, center, radius, startAngle, sweepAngle, defeatColor, size.width);
-    }
-    
-    final borderPaint = Paint()
-      ..color = borderColor
-      ..style = PaintingStyle.stroke
-      ..strokeWidth = size.width * 0.02; 
-    
-    canvas.drawCircle(center, radius, borderPaint);
-  }
 
-  void _drawSector(Canvas canvas, Offset center, double radius, double startAngle, double sweepAngle, Color color, double totalWidth) {
-    final paint = Paint()
-      ..color = color
-      ..style = PaintingStyle.fill;
-    
-    canvas.drawArc(Rect.fromCircle(center: center, radius: radius), startAngle, sweepAngle, true, paint);
-    
-    if (sweepAngle < 2 * math.pi) {
-      final linePaint = Paint()
-        ..color = Colors.white.withOpacity(0.5)
+    void drawDonutSector(double percentage, Color color) {
+      if (percentage <= 0) return;
+      final sweepAngle = 2 * math.pi * percentage;
+      final paint = Paint()
+        ..color = color
         ..style = PaintingStyle.stroke
-        ..strokeWidth = totalWidth * 0.015; 
+        ..strokeWidth = strokeWidth
+        ..strokeCap = StrokeCap.butt; 
       
-      final lineX = center.dx + radius * math.cos(startAngle);
-      final lineY = center.dy + radius * math.sin(startAngle);
-      
-      canvas.drawLine(center, Offset(lineX, lineY), linePaint);
+      canvas.drawArc(Rect.fromCircle(center: center, radius: radius), startAngle, sweepAngle, false, paint);
+      startAngle += sweepAngle;
     }
+    
+    drawDonutSector(victoryPercentage, victoryColor);
+    drawDonutSector(drawPercentage, drawColor);
+    drawDonutSector(defeatPercentage, defeatColor);
   }
 
   @override