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demo.dart

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  • parameter_painter.dart 4.01 KiB
    import 'dart:math';
    
    import 'package:flutter/material.dart';
    
    import 'package:hangman/config/default_game_settings.dart';
    import 'package:hangman/models/settings/settings_game.dart';
    import 'package:hangman/models/settings/settings_global.dart';
    import 'package:hangman/utils/tools.dart';
    
    class ParameterPainter extends CustomPainter {
      const ParameterPainter({
        required this.code,
        required this.value,
        required this.gameSettings,
        required this.globalSettings,
      });
    
      final String code;
      final String value;
      final GameSettings gameSettings;
      final GlobalSettings globalSettings;
    
      @override
      void paint(Canvas canvas, Size size) {
        // force square
        final double canvasSize = min(size.width, size.height);
    
        // content
        switch (code) {
          case DefaultGameSettings.parameterCodeGameMode:
            paintGameModeParameterItem(canvas, canvasSize);
            break;
          case DefaultGameSettings.parameterCodeGameLevel:
            paintGameLevelParameterItem(canvas, canvasSize);
            break;
          default:
            printlog('Unknown parameter: $code/$value');
            paintUnknownParameterItem(canvas, canvasSize);
        }
      }
    
      @override
      bool shouldRepaint(CustomPainter oldDelegate) {
        return false;
      }
    
      // "unknown" parameter -> simple block with text
      void paintUnknownParameterItem(
        final Canvas canvas,
        final double size,
      ) {
        final paint = Paint();
        paint.strokeJoin = StrokeJoin.round;
        paint.strokeWidth = 3;
    
        final textSpan = TextSpan(
          text: '$code\n$value',
          style: const TextStyle(
            color: Colors.black,
            fontSize: 18,
            fontWeight: FontWeight.bold,
          ),
        );
        final textPainter = TextPainter(
          text: textSpan,
          textDirection: TextDirection.ltr,
          textAlign: TextAlign.center,
        );
        textPainter.layout();
        textPainter.paint(
          canvas,
          Offset(
            (size - textPainter.width) * 0.5,
            (size - textPainter.height) * 0.5,
          ),
        );
      }
    
      void paintGameModeParameterItem(
        final Canvas canvas,
        final double size,
      ) {
        String text = '';
    
        switch (value) {
          case DefaultGameSettings.gameModeValueOnline:
            text = '🌐';
            break;
          case DefaultGameSettings.gameModeValueOffline:
            text = '📱';
            break;
          default:
            printlog('Wrong value for gameMode parameter value: $value');
        }
    
        final paint = Paint();
        paint.strokeJoin = StrokeJoin.round;
        paint.strokeWidth = 3 / 100 * size;
    
        // centered text value
        final textSpan = TextSpan(
          text: text,
          style: TextStyle(
            color: Colors.black,
            fontSize: size / 2,
            fontWeight: FontWeight.bold,
          ),
        );
        final textPainter = TextPainter(
          text: textSpan,
          textDirection: TextDirection.ltr,
          textAlign: TextAlign.center,
        );
        textPainter.layout();
        textPainter.paint(
          canvas,
          Offset(
            (size - textPainter.width) * 0.5,
            (size - textPainter.height) * 0.5,
          ),
        );
      }
    
      void paintGameLevelParameterItem(
        final Canvas canvas,
        final double size,
      ) {
        String text = '';
    
        switch (value) {
          case DefaultGameSettings.gameLevelValueEasy:
            text = '🧒';
            break;
          case DefaultGameSettings.gameLevelValueHard:
            text = '🧑‍🎓';
            break;
          default:
            printlog('Wrong value for gameLevel parameter value: $value');
        }
    
        final paint = Paint();
        paint.strokeJoin = StrokeJoin.round;
        paint.strokeWidth = 3 / 100 * size;
    
        // centered text value
        final textSpan = TextSpan(
          text: text,
          style: TextStyle(
            color: Colors.black,
            fontSize: size / 2,
            fontWeight: FontWeight.bold,
          ),
        );
        final textPainter = TextPainter(
          text: textSpan,
          textDirection: TextDirection.ltr,
          textAlign: TextAlign.center,
        );
        textPainter.layout();
        textPainter.paint(
          canvas,
          Offset(
            (size - textPainter.width) * 0.5,
            (size - textPainter.height) * 0.5,
          ),
        );
      }
    }