Add ObjectDict

@@ -25,12 +25,13 @@ import 'font.dart';
 import 'graphic_stream.dart';
 import 'graphics.dart';
 import 'object.dart';
+import 'object_dict.dart';
 import 'page.dart';
 import 'point.dart';
 import 'rect.dart';
 import 'stream.dart';
 
-class PdfAnnot extends PdfObject {
+class PdfAnnot extends PdfObjectDict {
   PdfAnnot(this.pdfPage, this.annot)
       : super(pdfPage.pdfDocument, type: '/Annot') {
     pdfPage.annotations.add(this);

@@ -19,11 +19,12 @@ import 'data_types.dart';
 import 'document.dart';
 import 'names.dart';
 import 'object.dart';
+import 'object_dict.dart';
 import 'outline.dart';
 import 'page_list.dart';
 
 /// Pdf Catalog object
-class PdfCatalog extends PdfObject {
+class PdfCatalog extends PdfObjectDict {
   /// This constructs a Pdf Catalog object
   PdfCatalog(
     PdfDocument pdfDocument,

@@ -19,14 +19,14 @@ import 'dart:convert';
 import 'data_types.dart';
 import 'document.dart';
 import 'font_metrics.dart';
-import 'object.dart';
+import 'object_dict.dart';
 import 'point.dart';
 import 'stream.dart';
 import 'type1_font.dart';
 import 'type1_fonts.dart';
 
 /// Pdf font object
-abstract class PdfFont extends PdfObject {
+abstract class PdfFont extends PdfObjectDict {
   /// Constructs a [PdfFont]. This will attempt to map the font from a known
   /// font name to that in Pdf, defaulting to Helvetica if not possible.
   PdfFont.create(PdfDocument pdfDocument, {required this.subtype})

@@ -16,11 +16,12 @@
 
 import 'data_types.dart';
 import 'object.dart';
+import 'object_dict.dart';
 import 'object_stream.dart';
 import 'ttffont.dart';
 
 /// Font descriptor object
-class PdfFontDescriptor extends PdfObject {
+class PdfFontDescriptor extends PdfObjectDict {
   /// Create a Font descriptor object
   PdfFontDescriptor(
     this.ttfFont,

@@ -26,14 +26,10 @@ class PdfObject {
   /// Pdf Object Type
   PdfObject(
     this.pdfDocument, {
-    String? type,
+    // String? type,
     this.objgen = 0,
     int? objser,
   }) : objser = objser ?? pdfDocument.genSerial() {
-    if (type != null) {
-      params['/Type'] = PdfName(type);
-    }
-
     pdfDocument.objects.add(this);
   }
 

+/*
+ * Copyright (C) 2017, David PHAM-VAN <dev.nfet.net@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import 'data_types.dart';
+import 'document.dart';
+import 'object.dart';
+
+/// Object with a PdfDict used in the PDF file
+class PdfObjectDict extends PdfObject {
+  /// This is usually called by extensors to this class, and sets the
+  /// Pdf Object Type
+  PdfObjectDict(
+    PdfDocument pdfDocument, {
+    String? type,
+    int objgen = 0,
+    int? objser,
+  }) : super(pdfDocument, objgen: objgen, objser: objser) {
+    if (type != null) {
+      params['/Type'] = PdfName(type);
+    }
+  }
+
+  /// This is the object parameters.
+  final PdfDict params = PdfDict();
+
+  @override
+  String toString() => '$runtimeType $params';
+}

@@ -19,11 +19,11 @@ import 'dart:typed_data';
 import 'ascii85.dart';
 import 'data_types.dart';
 import 'document.dart';
-import 'object.dart';
+import 'object_dict.dart';
 import 'stream.dart';
 
 /// Stream Object
-class PdfObjectStream extends PdfObject {
+class PdfObjectStream extends PdfObjectDict {
   /// Constructs a stream object to store some data
   PdfObjectStream(
     PdfDocument pdfDocument, {

@@ -19,7 +19,7 @@ import 'data_types.dart';
 import 'document.dart';
 import 'graphic_stream.dart';
 import 'graphics.dart';
-import 'object.dart';
+import 'object_dict.dart';
 import 'object_stream.dart';
 import 'page_format.dart';
 
@@ -39,7 +39,7 @@ enum PdfPageRotation {
 }
 
 /// Page object, which will hold any contents for this page.
-class PdfPage extends PdfObject with PdfGraphicStream {
+class PdfPage extends PdfObjectDict with PdfGraphicStream {
   /// This constructs a Page object, which will hold any contents for this
   /// page.
   PdfPage(

@@ -16,11 +16,11 @@
 
 import 'data_types.dart';
 import 'document.dart';
-import 'object.dart';
+import 'object_dict.dart';
 import 'page.dart';
 
 /// PdfPageList object
-class PdfPageList extends PdfObject {
+class PdfPageList extends PdfObjectDict {
   /// This constructs a [PdfPageList] object.
   PdfPageList(PdfDocument pdfDocument) : super(pdfDocument, type: '/Pages');
 

@@ -17,11 +17,12 @@
 import 'data_types.dart';
 import 'document.dart';
 import 'object.dart';
+import 'object_dict.dart';
 import 'stream.dart';
 
 enum PdfSigFlags { signaturesExist, appendOnly }
 
-class PdfSignature extends PdfObject {
+class PdfSignature extends PdfObjectDict {
   PdfSignature(
     PdfDocument pdfDocument, {
     required this.crypto,