Merge pull request #91 from SriramKiranSenthilkumar/master

committed the release source

packages/syncfusion_flutter_barcodes/example/lib/main.dart

@@ -5,6 +5,7 @@ void main() {
   return runApp(MyApp());
 }
 
+/// Creates the barcode generator
 class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {

packages/syncfusion_flutter_barcodes/lib/barcodes.dart

@@ -11,31 +11,23 @@
 /// * [Knowledge base](https://www.syncfusion.com/kb/flutter)
 library barcodes;
 
-import 'dart:convert' show utf8;
-import 'dart:ui';
-import 'package:flutter/material.dart';
-import 'package:flutter/rendering.dart';
-import 'package:syncfusion_flutter_core/theme.dart';
-
 // export barcode library
-part './src/barcode_generator/base/barcode_generator.dart';
-part './src/barcode_generator/base/symbology_base.dart';
-part './src/barcode_generator/one_dimensional/codabar_symbology.dart';
-part './src/barcode_generator/one_dimensional/code39_symbology.dart';
-part './src/barcode_generator/one_dimensional/code39_extended_symbology.dart';
-part './src/barcode_generator/one_dimensional/code93_symbology.dart';
-part './src/barcode_generator/one_dimensional/code128_symbology.dart';
-part './src/barcode_generator/one_dimensional/code128a_symbology.dart';
-part './src/barcode_generator/one_dimensional/code128b_symbology.dart';
-part './src/barcode_generator/one_dimensional/code128c_symbology.dart';
-part './src/barcode_generator/one_dimensional/ean8_symbology.dart';
-part './src/barcode_generator/one_dimensional/ean13_symbology.dart';
-part './src/barcode_generator/one_dimensional/upca_symbology.dart';
-part './src/barcode_generator/one_dimensional/upce_symbology.dart';
-part './src/barcode_generator/utils/helper.dart';
-part './src/barcode_generator/utils/enum.dart';
-part './src/barcode_generator/common/barcode_renderer.dart';
-part './src/barcode_generator/two_dimensional/error_correction_codewords.dart';
-part './src/barcode_generator/two_dimensional/qr_code_symbology.dart';
-part './src/barcode_generator/two_dimensional/qr_code_values.dart';
-part './src/barcode_generator/two_dimensional/datamatrix_symbology.dart';
+export './src/barcode_generator/base/barcode_generator.dart';
+export './src/barcode_generator/base/symbology_base.dart';
+export './src/barcode_generator/one_dimensional/codabar_symbology.dart';
+export './src/barcode_generator/one_dimensional/code128_symbology.dart';
+export './src/barcode_generator/one_dimensional/code128a_symbology.dart';
+export './src/barcode_generator/one_dimensional/code128b_symbology.dart';
+export './src/barcode_generator/one_dimensional/code128c_symbology.dart';
+
+export './src/barcode_generator/one_dimensional/code39_extended_symbology.dart';
+export './src/barcode_generator/one_dimensional/code39_symbology.dart';
+export './src/barcode_generator/one_dimensional/code93_symbology.dart';
+
+export './src/barcode_generator/one_dimensional/ean13_symbology.dart';
+export './src/barcode_generator/one_dimensional/ean8_symbology.dart';
+export './src/barcode_generator/one_dimensional/upca_symbology.dart';
+export './src/barcode_generator/one_dimensional/upce_symbology.dart';
+export './src/barcode_generator/two_dimensional/datamatrix_symbology.dart';
+export './src/barcode_generator/two_dimensional/qr_code_symbology.dart';
+export './src/barcode_generator/utils/enum.dart';

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/base/barcode_generator.dart

@@ -1,4 +1,44 @@
-part of barcodes;
+import 'dart:ui';
+import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
+import 'package:syncfusion_flutter_core/theme.dart';
+import '../common/barcode_renderer.dart';
+import '../one_dimensional/codabar_symbology.dart';
+import '../one_dimensional/code128_symbology.dart';
+import '../one_dimensional/code128a_symbology.dart';
+import '../one_dimensional/code128b_symbology.dart';
+import '../one_dimensional/code128c_symbology.dart';
+
+import '../one_dimensional/code39_extended_symbology.dart';
+import '../one_dimensional/code39_symbology.dart';
+import '../one_dimensional/code93_symbology.dart';
+
+import '../one_dimensional/ean13_symbology.dart';
+import '../one_dimensional/ean8_symbology.dart';
+import '../one_dimensional/upca_symbology.dart';
+import '../one_dimensional/upce_symbology.dart';
+
+import '../renderers/one_dimensional/codabar_renderer.dart';
+
+import '../renderers/one_dimensional/code128A_renderer.dart';
+import '../renderers/one_dimensional/code128B_renderer.dart';
+import '../renderers/one_dimensional/code128C_renderer.dart';
+import '../renderers/one_dimensional/code128_renderer.dart';
+import '../renderers/one_dimensional/code39_extended_renderer.dart';
+import '../renderers/one_dimensional/code39_renderer.dart';
+import '../renderers/one_dimensional/code93_renderer.dart';
+import '../renderers/one_dimensional/ean13_renderer.dart';
+import '../renderers/one_dimensional/ean8_renderer.dart';
+import '../renderers/one_dimensional/symbology_base_renderer.dart';
+import '../renderers/one_dimensional/upca_renderer.dart';
+import '../renderers/one_dimensional/upce_renderer.dart';
+import '../renderers/two_dimensional/datamatrix_renderer.dart';
+import '../renderers/two_dimensional/qr_code_renderer.dart';
+import '../two_dimensional/datamatrix_symbology.dart';
+import '../two_dimensional/qr_code_symbology.dart';
+
+import '../utils/helper.dart';
+import 'symbology_base.dart';
 
 /// Create barcode to generate and display data in a machine-readable
 /// industry-standard 1D and 2D barcodes.
@@ -226,6 +266,8 @@ class _SfBarcodeGeneratorState extends State<SfBarcodeGenerator> {
   /// Specifies the text size
   Size _textSize;
 
+  SymbologyRenderer _symbologyRenderer;
+
   @override
   void didChangeDependencies() {
     _barcodeTheme = SfBarcodeTheme.of(context);
@@ -237,22 +279,64 @@ class _SfBarcodeGeneratorState extends State<SfBarcodeGenerator> {
     if (widget.showValue &&
         (oldWidget.value != widget.value ||
             oldWidget.textStyle != widget.textStyle)) {
-      _textSize = _measureText(widget.value.toString(), widget.textStyle);
+      _textSize = measureText(widget.value.toString(), widget.textStyle);
+    }
+
+    if (widget.symbology != oldWidget.symbology) {
+      _createSymbologyRenderer();
     }
 
     super.didUpdateWidget(oldWidget);
   }
 
+  @override
+  void initState() {
+    _createSymbologyRenderer();
+    super.initState();
+  }
+
+  void _createSymbologyRenderer() {
+    if (widget.symbology is Codabar) {
+      _symbologyRenderer = CodabarRenderer(symbology: widget.symbology);
+    } else if (widget.symbology is Code39Extended) {
+      _symbologyRenderer = Code39ExtendedRenderer(symbology: widget.symbology);
+    } else if (widget.symbology is Code39) {
+      _symbologyRenderer = Code39Renderer(symbology: widget.symbology);
+    } else if (widget.symbology is Code93) {
+      _symbologyRenderer = Code93Renderer(symbology: widget.symbology);
+    } else if (widget.symbology is Code128) {
+      _symbologyRenderer = Code128Renderer(symbology: widget.symbology);
+    } else if (widget.symbology is Code128A) {
+      _symbologyRenderer = Code128ARenderer(symbology: widget.symbology);
+    } else if (widget.symbology is Code128B) {
+      _symbologyRenderer = Code128BRenderer(symbology: widget.symbology);
+    } else if (widget.symbology is Code128C) {
+      _symbologyRenderer = Code128CRenderer(symbology: widget.symbology);
+    } else if (widget.symbology is EAN8) {
+      _symbologyRenderer = EAN8Renderer(symbology: widget.symbology);
+    } else if (widget.symbology is EAN13) {
+      _symbologyRenderer = EAN13Renderer(symbology: widget.symbology);
+    } else if (widget.symbology is UPCA) {
+      _symbologyRenderer = UPCARenderer(symbology: widget.symbology);
+    } else if (widget.symbology is UPCE) {
+      _symbologyRenderer = UPCERenderer(symbology: widget.symbology);
+    } else if (widget.symbology is QRCode) {
+      _symbologyRenderer = QRCodeRenderer(symbology: widget.symbology);
+    } else if (widget.symbology is DataMatrix) {
+      _symbologyRenderer = DataMatrixRenderer(symbology: widget.symbology);
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     if (widget.showValue && _textSize == null) {
-      _textSize = _measureText(widget.value.toString(), widget.textStyle);
+      _textSize = measureText(widget.value.toString(), widget.textStyle);
     }
-    widget.symbology._getIsValidateInput(widget.value);
-    widget.symbology._textSize = _textSize;
+    _symbologyRenderer.getIsValidateInput(widget.value);
+    _symbologyRenderer.textSize = _textSize;
     return Container(
       color: widget.backgroundColor ?? _barcodeTheme.backgroundColor,
-      child: _SfBarcodeGeneratorRenderObjectWidget(
+      child: SfBarcodeGeneratorRenderObjectWidget(
           value: widget.value,
           symbology: widget.symbology,
           foregroundColor: widget.barColor ?? _barcodeTheme.barColor,
@@ -266,6 +350,7 @@ class _SfBarcodeGeneratorState extends State<SfBarcodeGenerator> {
               fontStyle: widget.textStyle.fontStyle,
               fontWeight: widget.textStyle.fontWeight,
               textBaseline: widget.textStyle.textBaseline),
+          symbologyRenderer: _symbologyRenderer,
           textSize: _textSize,
           textAlign: widget.textAlign),
     );

packages/syncfusion_flutter_barcodes/lib/src/barcode_generator/base/symbology_base.dart

@@ -1,5 +1,3 @@
-part of barcodes;
-
 /// Define the barcode symbology that will be used to encode the input value
 /// to the visual barcode representation.
 ///
@@ -47,118 +45,4 @@ abstract class Symbology {
   ///}
   /// ```dart
   final int module;
-
-  /// Specifies the value with start and the stop symbol
-  String _valueWithStartAndStopSymbol;
-
-  /// Specifies the text size
-  Size _textSize;
-
-  /// Method to valid whether the provided input character is supported
-  /// by corresponding symbology
-  bool _getIsValidateInput(String value);
-
-  /// Method to render the barcode value
-  void _renderBarcode(
-      Canvas canvas,
-      Size size,
-      Offset offset,
-      String value,
-      Color foregroundColor,
-      TextStyle textStyle,
-      double textSpacing,
-      TextAlign textAlign,
-      bool showValue);
-
-  /// Renders the paint for the bar code
-  Paint _getBarPaint(Color foregroundColor) {
-    return Paint()
-      ..color = foregroundColor
-      ..strokeWidth = 1
-      ..style = PaintingStyle.fill;
-  }
-
-  /// Calculates the left value of the initial bar code
-  double _getLeftPosition(
-      int barWidth, int module, double width, double offsetX) {
-    final int calculatedWidth = barWidth * module;
-    // Calculates the left position of the barcode based on the provided
-    // module value
-    double diffInWidth = (width - calculatedWidth) / 2;
-    diffInWidth += offsetX;
-    return diffInWidth;
-  }
-
-  /// Method to render the input value of the barcode
-  void _drawText(Canvas canvas, Offset offset, Size size, String value,
-      TextStyle textStyle, double textSpacing, TextAlign textAlign,
-      [Offset actualOffset, Size actualSize]) {
-    final TextSpan span = TextSpan(text: value, style: textStyle);
-    final TextPainter textPainter = TextPainter(
-        text: span, textDirection: TextDirection.ltr, textAlign: textAlign);
-    textPainter.layout();
-    double x;
-    double y;
-    if ((this is UPCA || this is EAN13 || this is UPCE) && value.length == 1) {
-      x = offset.dx;
-      y = offset.dy;
-    } else {
-      switch (textAlign) {
-        case TextAlign.justify:
-        case TextAlign.center:
-          {
-            x = (offset.dx + size.width / 2) - textPainter.width / 2;
-            y = offset.dy + size.height + textSpacing;
-          }
-          break;
-        case TextAlign.left:
-        case TextAlign.start:
-          {
-            x = offset.dx;
-            y = offset.dy + size.height + textSpacing;
-          }
-          break;
-        case TextAlign.right:
-        case TextAlign.end:
-          {
-            x = offset.dx + (size.width - textPainter.width);
-            y = offset.dy + size.height + textSpacing;
-          }
-          break;
-      }
-    }
-
-    if (this is UPCE || this is UPCA || this is EAN8 || this is EAN13) {
-      // Checks whether the calculated x value is present inside the control
-      // size
-      if (x >= actualOffset.dx &&
-          x + textPainter.width <= actualOffset.dx + actualSize.width) {
-        textPainter.paint(canvas, Offset(x, y));
-      }
-    } else {
-      textPainter.paint(canvas, Offset(x, y));
-    }
-  }
-
-  /// Calculates whether the corresponding type has extra height barcode
-  bool _getHasExtraHeight(int currentItemIndex, List<String> code) {
-    if (((currentItemIndex == 0 || currentItemIndex == code.length - 1) &&
-            (this is Code39 || this is Code39Extended)) ||
-        ((this is EAN8 || this is EAN13) &&
-            (currentItemIndex == 0 ||
-                currentItemIndex == 2 ||
-                currentItemIndex == code.length - 1)) ||
-        this is UPCA &&
-            (currentItemIndex == 1 ||
-                currentItemIndex == code.length - 2 ||
-                currentItemIndex == code.length - 4) ||
-        this is UPCE &&
-            (currentItemIndex == 1 ||
-                currentItemIndex == code.length - 2 ||
-                currentItemIndex == code.length - 4)) {
-      return true;
-    } else {
-      return false;
-    }
-  }
 }