Fix imports for Dart 2.15

@@ -45,7 +45,7 @@ Future<Uint8List> generateReport(
       .map((e) => e[2] as num)
       .reduce((value, element) => value + element);
 
-  final baseColor = PdfColors.cyan;
+  const baseColor = PdfColors.cyan;
 
   // Create a PDF document.
   final document = pw.Document();
@@ -166,10 +166,10 @@ Future<Uint8List> generateReport(
       color: PdfColors.white,
       fontWeight: pw.FontWeight.bold,
     ),
-    headerDecoration: pw.BoxDecoration(
+    headerDecoration: const pw.BoxDecoration(
       color: baseColor,
     ),
-    rowDecoration: pw.BoxDecoration(
+    rowDecoration: const pw.BoxDecoration(
       border: pw.Border(
         bottom: pw.BorderSide(
           color: baseColor,
@@ -191,7 +191,7 @@ Future<Uint8List> generateReport(
         return pw.Column(
           children: [
             pw.Text('Budget Report',
-                style: pw.TextStyle(
+                style: const pw.TextStyle(
                   color: baseColor,
                   fontSize: 40,
                 )),
@@ -210,7 +210,7 @@ Future<Uint8List> generateReport(
                     padding: const pw.EdgeInsets.only(bottom: 10),
                     child: pw.Text(
                       'Expense By Sub-Categories',
-                      style: pw.TextStyle(
+                      style: const pw.TextStyle(
                         color: baseColor,
                         fontSize: 16,
                       ),
@@ -230,7 +230,7 @@ Future<Uint8List> generateReport(
                         padding: const pw.EdgeInsets.only(bottom: 10),
                         child: pw.Text(
                           'Spent vs. Saved',
-                          style: pw.TextStyle(
+                          style: const pw.TextStyle(
                             color: baseColor,
                             fontSize: 16,
                           ),
@@ -273,7 +273,7 @@ Future<Uint8List> generateReport(
               child: pw.Chart(
                 title: pw.Text(
                   'Expense breakdown',
-                  style: pw.TextStyle(
+                  style: const pw.TextStyle(
                     color: baseColor,
                     fontSize: 20,
                   ),

 # Changelog
 
+## 3.6.6
+
+- Fix imports for Dart 2.15
+
 ## 3.6.5
 
 - Update dependencies

@@ -16,7 +16,7 @@
 
 import 'package:archive/archive.dart';
 
-import 'package:pdf/pdf.dart';
+import '../document.dart';
 
 /// Zip compression function
 DeflateCallback defaultDeflate = const ZLibEncoder().encode;

@@ -16,7 +16,7 @@
 
 import 'dart:io';
 
-import 'package:pdf/pdf.dart';
+import '../document.dart';
 
 /// Zip compression function
 DeflateCallback defaultDeflate = zlib.encode;

@@ -16,12 +16,11 @@
 
 import 'dart:typed_data';
 
-import 'package:pdf/src/pdf/object_stream.dart';
-
 import 'data_types.dart';
 import 'document.dart';
 import 'object.dart';
 import 'object_dict.dart';
+import 'object_stream.dart';
 import 'stream.dart';
 
 /// Signature flags

@@ -16,10 +16,9 @@
 
 import 'dart:typed_data';
 
-import 'package:pdf/src/pdf/stream.dart';
-
 import 'data_types.dart';
 import 'object.dart';
+import 'stream.dart';
 
 enum PdfCrossRefEntryType { free, inUse }
 

@@ -15,10 +15,10 @@
  */
 
 import 'package:pdf/pdf.dart';
-import 'package:pdf/src/svg/color.dart';
-import 'package:pdf/widgets.dart';
 
+import '../widgets/font.dart';
 import 'brush.dart';
+import 'color.dart';
 import 'group.dart';
 import 'parser.dart';
 

@@ -17,10 +17,10 @@
 import 'dart:math';
 
 import 'package:pdf/pdf.dart';
-import 'package:pdf/widgets.dart';
 import 'package:vector_math/vector_math_64.dart';
 import 'package:xml/xml.dart';
 
+import '../widgets/widget.dart';
 import 'brush.dart';
 import 'clip_path.dart';
 import 'operation.dart';

@@ -14,11 +14,10 @@
  * limitations under the License.
  */
 
-import 'package:pdf/src/pdf/point.dart';
-import 'package:pdf/src/widgets/geometry.dart';
-import 'package:pdf/src/widgets/widget.dart';
+import 'package:pdf/pdf.dart';
 
-import '../../pdf.dart';
+import 'geometry.dart';
+import 'widget.dart';
 
 class Circle extends Widget {
   Circle({this.fillColor, this.strokeColor, this.strokeWidth = 1.0});

@@ -19,11 +19,11 @@ import 'dart:math' as math;
 
 import 'package:meta/meta.dart';
 import 'package:pdf/pdf.dart';
-import 'package:pdf/widgets.dart';
 import 'package:vector_math/vector_math_64.dart';
 
 import 'document.dart';
 import 'geometry.dart';
+import 'multi_page.dart';
 import 'page.dart';
 import 'theme.dart';
 

@@ -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
 repository: https://github.com/DavBfr/dart_pdf
 issue_tracker: https://github.com/DavBfr/dart_pdf/issues
-version: 3.6.5
+version: 3.6.6
 
 environment:
   sdk: ">=2.12.0 <3.0.0"

 # Changelog
 
+## 5.6.7
+
+- Fix imports for Dart 2.15
+
 ## 5.6.6
 
 - Update dependencies

@@ -17,14 +17,12 @@
 import 'dart:async';
 import 'dart:html' as html;
 import 'dart:html';
-import 'dart:io';
 import 'dart:js' as js;
 import 'dart:js_util';
 import 'dart:typed_data';
 import 'dart:ui';
 
 import 'package:flutter/foundation.dart';
-import 'package:flutter/rendering.dart' show Rect;
 import 'package:flutter_web_plugins/flutter_web_plugins.dart';
 import 'package:image/image.dart' as im;
 import 'package:pdf/pdf.dart';

@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
 import '../raster.dart';

@@ -18,7 +18,6 @@ import 'dart:async';
 import 'dart:typed_data';
 
 import 'package:flutter/material.dart';
-import 'package:flutter/rendering.dart' show Rect, Offset;
 import 'package:pdf/pdf.dart';
 
 import 'callback.dart';

@@ -6,7 +6,7 @@ description: >
 homepage: https://github.com/DavBfr/dart_pdf/tree/master/printing
 repository: https://github.com/DavBfr/dart_pdf
 issue_tracker: https://github.com/DavBfr/dart_pdf/issues
-version: 5.6.6
+version: 5.6.7
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
@@ -22,7 +22,7 @@ dependencies:
   image: ">=3.0.1 <=4.0.0"
   js: ^0.6.3
   meta: ^1.7.0
-  pdf: ^3.6.5
+  pdf: ^3.6.6
   plugin_platform_interface: ^2.0.0
 
 dev_dependencies: