Add RTL support to Wrap widget

@@ -16,6 +16,7 @@
 
 
 import 'dart:math' as math;
 import 'dart:math' as math;
 
 
+import 'package:pdf/widgets.dart';
 import 'package:vector_math/vector_math_64.dart';
 import 'package:vector_math/vector_math_64.dart';
 
 
 import '../../pdf.dart';
 import '../../pdf.dart';
@@ -164,11 +165,14 @@ class Wrap extends MultiChildWidget with SpanningWidget {
     double? mainAxisLimit = 0.0;
     double? mainAxisLimit = 0.0;
     var flipMainAxis = false;
     var flipMainAxis = false;
     var flipCrossAxis = false;
     var flipCrossAxis = false;
-
+    final textDirection = Directionality.of(context);
     switch (direction) {
     switch (direction) {
       case Axis.horizontal:
       case Axis.horizontal:
         childConstraints = BoxConstraints(maxWidth: constraints.maxWidth);
         childConstraints = BoxConstraints(maxWidth: constraints.maxWidth);
         mainAxisLimit = constraints.maxWidth;
         mainAxisLimit = constraints.maxWidth;
+        if (textDirection == TextDirection.rtl) {
+          flipMainAxis = true;
+        }
         if (verticalDirection == VerticalDirection.down) {
         if (verticalDirection == VerticalDirection.down) {
           flipCrossAxis = true;
           flipCrossAxis = true;
         }
         }
@@ -179,6 +183,9 @@ class Wrap extends MultiChildWidget with SpanningWidget {
         if (verticalDirection == VerticalDirection.down) {
         if (verticalDirection == VerticalDirection.down) {
           flipMainAxis = true;
           flipMainAxis = true;
         }
         }
+        if (textDirection == TextDirection.rtl) {
+          flipCrossAxis = true;
+        }
         break;
         break;
     }
     }
 
 

@@ -34,6 +34,17 @@ final _redBox = Container(
   color: PdfColors.red,
   color: PdfColors.red,
 );
 );
 
 
+final _yellowBox = Container(
+  width: 50,
+  height: 50,
+  color: PdfColors.yellow,
+);
+
+final _greenBox = Container(
+  width: 50,
+  height: 50,
+  color: PdfColors.green,
+);
 void main() {
 void main() {
   setUpAll(() {
   setUpAll(() {
     Document.debug = true;
     Document.debug = true;
@@ -124,6 +135,75 @@ void main() {
     );
     );
   });
   });
 
 
+  test('Wrap Should render blue,red,yellow ordered RTL', () {
+    pdf.addPage(
+      Page(
+        textDirection: TextDirection.rtl,
+        pageFormat: const PdfPageFormat(150, 150),
+        build: (Context context) => SizedBox(
+            width: 150,
+            height: 150,
+           child: Wrap(
+              children: [_blueBox, _redBox,_yellowBox],
+            )
+        ),
+      ),
+    );
+  });
+
+  test('Wrap Should render blue,red,yellow ordered LTR', () {
+    pdf.addPage(
+      Page(
+        textDirection: TextDirection.ltr,
+        pageFormat: const PdfPageFormat(150, 150),
+        build: (Context context) => SizedBox(
+            width: 150,
+            height: 150,
+            child: Wrap(
+              children: [_blueBox, _redBox,_yellowBox],
+            )
+        ),
+      ),
+    );
+  });
+  test('Wrap Should render blue,red,yellow ordered RTL aligned center', () {
+    pdf.addPage(
+      Page(
+        textDirection: TextDirection.rtl,
+        pageFormat: const PdfPageFormat(150, 150),
+        build: (Context context) => SizedBox(
+            width: 150,
+            height: 150,
+            child: Wrap(
+              spacing: 10,
+              runSpacing: 10,
+              runAlignment: WrapAlignment.center,
+              children: [_blueBox, _redBox,_yellowBox],
+            )
+        ),
+      ),
+    );
+  });
+
+  test('Wrap Should render blue,red,yellow ordered RTL aligned bottom', () {
+    pdf.addPage(
+      Page(
+        textDirection: TextDirection.rtl,
+        pageFormat: const PdfPageFormat(150, 150),
+        build: (Context context) => SizedBox(
+            width: 150,
+            height: 150,
+            child: Wrap(
+              spacing: 10,
+              runSpacing: 10,
+              runAlignment: WrapAlignment.end,
+              children: [_blueBox, _redBox,_yellowBox],
+            )
+        ),
+      ),
+    );
+  });
+
   tearDownAll(() async {
   tearDownAll(() async {
     final file = File('rtl-layout.pdf');
     final file = File('rtl-layout.pdf');
     await file.writeAsBytes(await pdf.save());
     await file.writeAsBytes(await pdf.save());