Fix bidirectional text incorrect render order

Properly handle line breakers (\\n) in bidirectional text

 # Changelog
 # Changelog
 
 
+## 3.7.4
+
+- Fix Bidirectional text (Arabic + Latin words) order and line breakers issue #990 [Milad]
+
 ## 3.7.3
 ## 3.7.3
 
 
 - Fix missing endobj with compressed xref
 - Fix missing endobj with compressed xref

@@ -386,14 +386,22 @@ Iterable<String> _parse(String text) sync* {
   }
   }
   // if notArabicWords.length != 0, that means all sentence doesn't contain Arabic.
   // if notArabicWords.length != 0, that means all sentence doesn't contain Arabic.
   for (var i = 0; i < notArabicWords.length; i++) {
   for (var i = 0; i < notArabicWords.length; i++) {
-    yield String.fromCharCodes(notArabicWords[i]);
-    if (i != notArabicWords.length - 1) {
+    if (!first) {
       yield ' ';
       yield ' ';
     }
     }
+    yield String.fromCharCodes(notArabicWords[i]);
   }
   }
 }
 }
 
 
 /// Apply Arabic shape substitutions
 /// Apply Arabic shape substitutions
 String convert(String input) {
 String convert(String input) {
-  return List<String>.from(_parse(input)).join('');
+  final lines = input.split('\n');
+  final parsed = <String>[];
+  for (var i = 0; i < lines.length; i++) {
+    if (lines[i].isEmpty) {
+      continue;
+    }
+    parsed.addAll([..._parse(lines[i]), if (i != lines.length - 1) '\n']);
+  }
+  return parsed.join();
 }
 }

@@ -3,7 +3,7 @@ description: A pdf producer for Dart. It can create pdf files for both web or fl
 homepage: https://github.com/DavBfr/dart_pdf/tree/master/pdf
 homepage: https://github.com/DavBfr/dart_pdf/tree/master/pdf
 repository: https://github.com/DavBfr/dart_pdf
 repository: https://github.com/DavBfr/dart_pdf
 issue_tracker: https://github.com/DavBfr/dart_pdf/issues
 issue_tracker: https://github.com/DavBfr/dart_pdf/issues
-version: 3.7.3
+version: 3.7.4
 
 
 environment:
 environment:
   sdk: ">=2.12.0 <3.0.0"
   sdk: ">=2.12.0 <3.0.0"

@@ -439,7 +439,7 @@ void main() {
         65176,
         65176,
         65252,
         65252,
         65247,
         65247,
-        1575
+        1575,
       ]),
       ]),
     ];
     ];
 
 
@@ -492,6 +492,38 @@ void main() {
     ));
     ));
   });
   });
 
 
+  test(
+      'Text Widgets, Mixed Arabic and Latin words should be rendered in order ',
+      () {
+    pdf.addPage(Page(
+      textDirection: TextDirection.rtl,
+      build: (Context context) => RichText(
+        text: TextSpan(
+          text: 'النصوص ثنائية الإتجاه Bidirectional Text\n',
+          style: TextStyle(
+            font: arabicFont,
+            fontSize: 30,
+          ),
+          children: const <TextSpan>[
+            TextSpan(
+              text: r'''
+الكلمات اللاتينية المضافة إلى نص عربي يجب أن توضع في الترتيب الصحيح Right Order مهما كان موضعها في النص.
+At the Beginning of the sentence في بداية الجملة
+أو في منتصفها In the middle of the sentence حيث يكون بعدها كلام عربي
+أو في نهاية النص At the end of the sentence
+أيضا ترتيب الأرقام والرموز يجب 1 أن 2 يكون 3 صحيحاً$.
+ولا ننسى أيضا فواصل السطور Line breakers حيث وجودها في موضعها الصحيح مهم جدا في النصوص ثنائية الاتجاه Bidirectional
+              ''',
+              style: TextStyle(
+                fontSize: 18,
+              ),
+            ),
+          ],
+        ),
+      ),
+    ));
+  });
+
   tearDownAll(() async {
   tearDownAll(() async {
     final file = File('arabic.pdf');
     final file = File('arabic.pdf');
     await file.writeAsBytes(await pdf.save());
     await file.writeAsBytes(await pdf.save());