From 2bc581d6d511524968aaa0d3c37a680522c67c39 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Thu, 21 Dec 2023 17:34:47 +0100
Subject: [PATCH 01/14] Implement and apply `PdfActionBarTheme`

---
 .../lib/src/preview/action_bar_theme.dart     | 74 +++++++++++++++++++
 printing/lib/src/preview/pdf_preview.dart     | 17 ++++-
 2 files changed, 87 insertions(+), 4 deletions(-)
 create mode 100644 printing/lib/src/preview/action_bar_theme.dart

diff --git a/printing/lib/src/preview/action_bar_theme.dart b/printing/lib/src/preview/action_bar_theme.dart
new file mode 100644
index 00000000..cbabe80c
--- /dev/null
+++ b/printing/lib/src/preview/action_bar_theme.dart
@@ -0,0 +1,74 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+
+class PdfActionBarTheme with Diagnosticable {
+  /// Creates a theme for action bar of [PdfPreviewController].
+  const PdfActionBarTheme({
+    this.backgroundColor,
+    this.iconColor,
+    this.height,
+    this.textStyle,
+    this.elevation = 4,
+    this.alignment = WrapAlignment.spaceAround,
+  });
+
+  final Color? backgroundColor;
+  final Color? iconColor;
+  final double? height;
+  final TextStyle? textStyle;
+  final double elevation;
+  final WrapAlignment alignment;
+
+  /// Creates a copy of this object but with the given fields replaced with the
+  /// new values.
+  PdfActionBarTheme copyWith({
+    Color? backgroundColor,
+    Color? iconColor,
+    double? height,
+    TextStyle? textStyle,
+    double? elevation,
+    WrapAlignment? alignment,
+  }) {
+    return PdfActionBarTheme(
+      backgroundColor: backgroundColor ?? this.backgroundColor,
+      iconColor: iconColor ?? this.iconColor,
+      height: height ?? this.height,
+      textStyle: textStyle ?? this.textStyle,
+      elevation: elevation ?? this.elevation,
+      alignment: alignment ?? this.alignment,
+    );
+  }
+
+  @override
+  int get hashCode => Object.hashAll(
+      [backgroundColor, iconColor, height, textStyle, elevation, alignment]);
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) {
+      return true;
+    }
+    if (other.runtimeType != runtimeType) {
+      return false;
+    }
+    return other is PdfActionBarTheme &&
+        other.backgroundColor == backgroundColor &&
+        other.iconColor == iconColor &&
+        other.height == height &&
+        other.textStyle == textStyle &&
+        other.elevation == elevation &&
+        other.alignment == alignment;
+  }
+
+  @override
+  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+    super.debugFillProperties(properties);
+    properties.add(ColorProperty('backgroundColor', backgroundColor));
+    properties.add(ColorProperty('iconColor', iconColor));
+    properties.add(DoubleProperty('height', height));
+    properties.add(DiagnosticsProperty<TextStyle>('textStyle', textStyle));
+    properties.add(DoubleProperty('elevation', elevation));
+    properties.add(DiagnosticsProperty<WrapAlignment>('alignment', alignment,
+        defaultValue: WrapAlignment.spaceAround));
+  }
+}
diff --git a/printing/lib/src/preview/pdf_preview.dart b/printing/lib/src/preview/pdf_preview.dart
index 87ee3de5..30250f87 100644
--- a/printing/lib/src/preview/pdf_preview.dart
+++ b/printing/lib/src/preview/pdf_preview.dart
@@ -21,6 +21,7 @@ import 'package:pdf/widgets.dart' as pw;
 import '../callback.dart';
 import '../printing.dart';
 import '../printing_info.dart';
+import 'action_bar_theme.dart';
 import 'actions.dart';
 import 'controller.dart';
 import 'custom.dart';
@@ -62,6 +63,7 @@ class PdfPreview extends StatefulWidget {
     this.loadingWidget,
     this.onPageFormatChanged,
     this.dpi,
+    this.actionBarTheme = const PdfActionBarTheme(),
   })  : _pagesBuilder = null,
         super(key: key);
 
@@ -119,6 +121,7 @@ class PdfPreview extends StatefulWidget {
     this.loadingWidget,
     this.onPageFormatChanged,
     this.dpi,
+    this.actionBarTheme = const PdfActionBarTheme(),
     required CustomPdfPagesBuilder pagesBuilder,
   })  : _pagesBuilder = pagesBuilder,
         super(key: key);
@@ -223,6 +226,9 @@ class PdfPreview extends StatefulWidget {
   /// If not provided, this value is calculated.
   final double? dpi;
 
+  /// The style of actions bar.
+  final PdfActionBarTheme actionBarTheme;
+
   /// clients can pass this builder to render
   /// their own pages.
   final CustomPdfPagesBuilder? _pagesBuilder;
@@ -406,16 +412,19 @@ class PdfPreviewState extends State<PdfPreview> {
           if (actions.isNotEmpty)
             IconTheme.merge(
               data: IconThemeData(
-                color: iconColor,
+                color: widget.actionBarTheme.iconColor ?? iconColor,
               ),
               child: Material(
-                elevation: 4,
-                color: theme.primaryColor,
+                elevation: widget.actionBarTheme.elevation,
+                color:
+                    widget.actionBarTheme.backgroundColor ?? theme.primaryColor,
+                textStyle: widget.actionBarTheme.textStyle,
                 child: SizedBox(
                   width: double.infinity,
+                  height: widget.actionBarTheme.height,
                   child: SafeArea(
                     child: Wrap(
-                      alignment: WrapAlignment.spaceAround,
+                      alignment: widget.actionBarTheme.alignment,
                       children: actions,
                     ),
                   ),

From 4348f87c76fe417059f3279023cb9d4b610cfe37 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Fri, 22 Dec 2023 08:50:50 +0100
Subject: [PATCH 02/14] Export `PdfActionBarTheme`

---
 printing/lib/printing.dart | 1 +
 1 file changed, 1 insertion(+)

diff --git a/printing/lib/printing.dart b/printing/lib/printing.dart
index 1dc67269..06e1ba7d 100644
--- a/printing/lib/printing.dart
+++ b/printing/lib/printing.dart
@@ -24,6 +24,7 @@ export 'src/asset_utils.dart';
 export 'src/cache.dart';
 export 'src/callback.dart';
 export 'src/fonts/gfonts.dart';
+export 'src/preview/action_bar_theme.dart';
 export 'src/preview/actions.dart';
 export 'src/preview/pdf_preview.dart';
 export 'src/printer.dart';

From 692e61dbb04677fe771d4a0e00e469f310ec3b50 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Fri, 22 Dec 2023 11:31:08 +0100
Subject: [PATCH 03/14] Implement `crossAxisAlignment` for actions

---
 .../lib/src/preview/action_bar_theme.dart     | 21 ++++++++++++++++---
 printing/lib/src/preview/pdf_preview.dart     |  2 ++
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/printing/lib/src/preview/action_bar_theme.dart b/printing/lib/src/preview/action_bar_theme.dart
index cbabe80c..f2b84fe4 100644
--- a/printing/lib/src/preview/action_bar_theme.dart
+++ b/printing/lib/src/preview/action_bar_theme.dart
@@ -10,6 +10,7 @@ class PdfActionBarTheme with Diagnosticable {
     this.textStyle,
     this.elevation = 4,
     this.alignment = WrapAlignment.spaceAround,
+    this.crossAxisAlignment = WrapCrossAlignment.center,
   });
 
   final Color? backgroundColor;
@@ -18,6 +19,7 @@ class PdfActionBarTheme with Diagnosticable {
   final TextStyle? textStyle;
   final double elevation;
   final WrapAlignment alignment;
+  final WrapCrossAlignment crossAxisAlignment;
 
   /// Creates a copy of this object but with the given fields replaced with the
   /// new values.
@@ -28,6 +30,7 @@ class PdfActionBarTheme with Diagnosticable {
     TextStyle? textStyle,
     double? elevation,
     WrapAlignment? alignment,
+    WrapCrossAlignment? crossAxisAlignment,
   }) {
     return PdfActionBarTheme(
       backgroundColor: backgroundColor ?? this.backgroundColor,
@@ -36,12 +39,20 @@ class PdfActionBarTheme with Diagnosticable {
       textStyle: textStyle ?? this.textStyle,
       elevation: elevation ?? this.elevation,
       alignment: alignment ?? this.alignment,
+      crossAxisAlignment: crossAxisAlignment ?? this.crossAxisAlignment,
     );
   }
 
   @override
-  int get hashCode => Object.hashAll(
-      [backgroundColor, iconColor, height, textStyle, elevation, alignment]);
+  int get hashCode => Object.hashAll([
+        backgroundColor,
+        iconColor,
+        height,
+        textStyle,
+        elevation,
+        alignment,
+        crossAxisAlignment
+      ]);
 
   @override
   bool operator ==(Object other) {
@@ -57,7 +68,8 @@ class PdfActionBarTheme with Diagnosticable {
         other.height == height &&
         other.textStyle == textStyle &&
         other.elevation == elevation &&
-        other.alignment == alignment;
+        other.alignment == alignment &&
+        other.crossAxisAlignment == crossAxisAlignment;
   }
 
   @override
@@ -70,5 +82,8 @@ class PdfActionBarTheme with Diagnosticable {
     properties.add(DoubleProperty('elevation', elevation));
     properties.add(DiagnosticsProperty<WrapAlignment>('alignment', alignment,
         defaultValue: WrapAlignment.spaceAround));
+    properties.add(DiagnosticsProperty<WrapCrossAlignment>(
+        'crossAxisAlignment', crossAxisAlignment,
+        defaultValue: WrapCrossAlignment.center));
   }
 }
diff --git a/printing/lib/src/preview/pdf_preview.dart b/printing/lib/src/preview/pdf_preview.dart
index 30250f87..cdd8436a 100644
--- a/printing/lib/src/preview/pdf_preview.dart
+++ b/printing/lib/src/preview/pdf_preview.dart
@@ -425,6 +425,8 @@ class PdfPreviewState extends State<PdfPreview> {
                   child: SafeArea(
                     child: Wrap(
                       alignment: widget.actionBarTheme.alignment,
+                      crossAxisAlignment:
+                          widget.actionBarTheme.crossAxisAlignment,
                       children: actions,
                     ),
                   ),

From 60342b500191d4ea4b49fbb4d1e270717bd8f4ba Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Fri, 22 Dec 2023 12:03:16 +0100
Subject: [PATCH 04/14] Apply additional `Wrap` properties

---
 .../lib/src/preview/action_bar_theme.dart     | 20 +++++++++++++++++--
 printing/lib/src/preview/pdf_preview.dart     |  2 ++
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/printing/lib/src/preview/action_bar_theme.dart b/printing/lib/src/preview/action_bar_theme.dart
index f2b84fe4..f245cd9d 100644
--- a/printing/lib/src/preview/action_bar_theme.dart
+++ b/printing/lib/src/preview/action_bar_theme.dart
@@ -8,8 +8,10 @@ class PdfActionBarTheme with Diagnosticable {
     this.iconColor,
     this.height,
     this.textStyle,
-    this.elevation = 4,
+    this.elevation = 4.0,
+    this.actionSpacing = 0.0,
     this.alignment = WrapAlignment.spaceAround,
+    this.runAlignment = WrapAlignment.center,
     this.crossAxisAlignment = WrapCrossAlignment.center,
   });
 
@@ -18,7 +20,9 @@ class PdfActionBarTheme with Diagnosticable {
   final double? height;
   final TextStyle? textStyle;
   final double elevation;
+  final double actionSpacing;
   final WrapAlignment alignment;
+  final WrapAlignment runAlignment;
   final WrapCrossAlignment crossAxisAlignment;
 
   /// Creates a copy of this object but with the given fields replaced with the
@@ -29,7 +33,9 @@ class PdfActionBarTheme with Diagnosticable {
     double? height,
     TextStyle? textStyle,
     double? elevation,
+    double? actionSpacing,
     WrapAlignment? alignment,
+    WrapAlignment? runAlignment,
     WrapCrossAlignment? crossAxisAlignment,
   }) {
     return PdfActionBarTheme(
@@ -38,7 +44,9 @@ class PdfActionBarTheme with Diagnosticable {
       height: height ?? this.height,
       textStyle: textStyle ?? this.textStyle,
       elevation: elevation ?? this.elevation,
+      actionSpacing: actionSpacing ?? this.actionSpacing,
       alignment: alignment ?? this.alignment,
+      runAlignment: runAlignment ?? this.runAlignment,
       crossAxisAlignment: crossAxisAlignment ?? this.crossAxisAlignment,
     );
   }
@@ -50,8 +58,10 @@ class PdfActionBarTheme with Diagnosticable {
         height,
         textStyle,
         elevation,
+        actionSpacing,
         alignment,
-        crossAxisAlignment
+        runAlignment,
+        crossAxisAlignment,
       ]);
 
   @override
@@ -68,7 +78,9 @@ class PdfActionBarTheme with Diagnosticable {
         other.height == height &&
         other.textStyle == textStyle &&
         other.elevation == elevation &&
+        other.actionSpacing == actionSpacing &&
         other.alignment == alignment &&
+        other.runAlignment == runAlignment &&
         other.crossAxisAlignment == crossAxisAlignment;
   }
 
@@ -80,8 +92,12 @@ class PdfActionBarTheme with Diagnosticable {
     properties.add(DoubleProperty('height', height));
     properties.add(DiagnosticsProperty<TextStyle>('textStyle', textStyle));
     properties.add(DoubleProperty('elevation', elevation));
+    properties.add(DoubleProperty('actionSpacing', actionSpacing));
     properties.add(DiagnosticsProperty<WrapAlignment>('alignment', alignment,
         defaultValue: WrapAlignment.spaceAround));
+    properties.add(DiagnosticsProperty<WrapAlignment>(
+        'runAlignment', runAlignment,
+        defaultValue: WrapAlignment.center));
     properties.add(DiagnosticsProperty<WrapCrossAlignment>(
         'crossAxisAlignment', crossAxisAlignment,
         defaultValue: WrapCrossAlignment.center));
diff --git a/printing/lib/src/preview/pdf_preview.dart b/printing/lib/src/preview/pdf_preview.dart
index cdd8436a..6fc3b346 100644
--- a/printing/lib/src/preview/pdf_preview.dart
+++ b/printing/lib/src/preview/pdf_preview.dart
@@ -424,7 +424,9 @@ class PdfPreviewState extends State<PdfPreview> {
                   height: widget.actionBarTheme.height,
                   child: SafeArea(
                     child: Wrap(
+                      spacing: widget.actionBarTheme.actionSpacing,
                       alignment: widget.actionBarTheme.alignment,
+                      runAlignment: widget.actionBarTheme.runAlignment,
                       crossAxisAlignment:
                           widget.actionBarTheme.crossAxisAlignment,
                       children: actions,

From 1b9e77e5dab0393e16f9ed9faa5e46a76d1fea52 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Fri, 19 Jan 2024 17:16:34 +0100
Subject: [PATCH 05/14] Implement `scrollToPage` method

---
 printing/lib/src/preview/custom.dart | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/printing/lib/src/preview/custom.dart b/printing/lib/src/preview/custom.dart
index 2d554335..795a77a4 100644
--- a/printing/lib/src/preview/custom.dart
+++ b/printing/lib/src/preview/custom.dart
@@ -110,6 +110,8 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     with PdfPreviewRaster {
   final listView = GlobalKey();
 
+  late List<GlobalKey> _pageGlobalKeys;
+
   bool infoLoaded = false;
 
   int? preview;
@@ -172,6 +174,28 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     super.didChangeDependencies();
   }
 
+  @override
+  void initState() {
+    super.initState();
+    _pageGlobalKeys = List.generate(
+      pages.length,
+      (index) => GlobalKey(debugLabel: 'pdf-page-$index'),
+    );
+  }
+
+  void scrollToPage(
+    int index, {
+    Duration duration = Duration.zero,
+    Curve curve = Curves.ease,
+    ScrollPositionAlignmentPolicy alignmentPolicy =
+        ScrollPositionAlignmentPolicy.explicit,
+  }) {
+    assert(index >= 0);
+    final pageKey = _pageGlobalKeys[index];
+    Scrollable.ensureVisible(pageKey.currentContext!,
+        duration: duration, curve: curve, alignmentPolicy: alignmentPolicy);
+  }
+
   Widget _showError(Object error) {
     if (widget.onError != null) {
       return widget.onError!(context, error);
@@ -215,6 +239,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
           });
         },
         child: PdfPreviewPage(
+          key: _pageGlobalKeys[index],
           pageData: pages[index],
           pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
           pageMargin: widget.previewPageMargin,

From 9599e41dcf4b337c87738c69be9797588d1974b7 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Fri, 19 Jan 2024 17:23:57 +0100
Subject: [PATCH 06/14] Init pages keys after `pages` is populated

---
 printing/lib/src/preview/custom.dart | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/printing/lib/src/preview/custom.dart b/printing/lib/src/preview/custom.dart
index 795a77a4..be09a48b 100644
--- a/printing/lib/src/preview/custom.dart
+++ b/printing/lib/src/preview/custom.dart
@@ -110,7 +110,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     with PdfPreviewRaster {
   final listView = GlobalKey();
 
-  late List<GlobalKey> _pageGlobalKeys;
+  late final List<GlobalKey> _pageGlobalKeys;
 
   bool infoLoaded = false;
 
@@ -174,15 +174,6 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     super.didChangeDependencies();
   }
 
-  @override
-  void initState() {
-    super.initState();
-    _pageGlobalKeys = List.generate(
-      pages.length,
-      (index) => GlobalKey(debugLabel: 'pdf-page-$index'),
-    );
-  }
-
   void scrollToPage(
     int index, {
     Duration duration = Duration.zero,
@@ -221,9 +212,15 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
           );
     }
 
+    _pageGlobalKeys = List.generate(
+      pages.length,
+      (index) => GlobalKey(debugLabel: 'pdf-page-$index'),
+    );
+
     if (widget.pagesBuilder != null) {
       return widget.pagesBuilder!(context, pages);
     }
+
     return ListView.builder(
       controller: scrollController,
       shrinkWrap: widget.shrinkWrap,

From ef8bfa9f0e690adf9982e4e7e50b5c4cfb2b5b41 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Fri, 19 Jan 2024 17:28:11 +0100
Subject: [PATCH 07/14] Fix finalizing

---
 printing/lib/src/preview/custom.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/printing/lib/src/preview/custom.dart b/printing/lib/src/preview/custom.dart
index be09a48b..192f8066 100644
--- a/printing/lib/src/preview/custom.dart
+++ b/printing/lib/src/preview/custom.dart
@@ -110,7 +110,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     with PdfPreviewRaster {
   final listView = GlobalKey();
 
-  late final List<GlobalKey> _pageGlobalKeys;
+  late List<GlobalKey> _pageGlobalKeys;
 
   bool infoLoaded = false;
 

From ff7a059432a3dee9b03e388c3e5f44e02ea98266 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Fri, 19 Jan 2024 17:40:14 +0100
Subject: [PATCH 08/14] Update `scrollToPage`

---
 printing/lib/src/preview/custom.dart | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/printing/lib/src/preview/custom.dart b/printing/lib/src/preview/custom.dart
index 192f8066..3b1d7441 100644
--- a/printing/lib/src/preview/custom.dart
+++ b/printing/lib/src/preview/custom.dart
@@ -174,16 +174,17 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     super.didChangeDependencies();
   }
 
-  void scrollToPage(
+  Future<void> scrollToPage(
     int index, {
-    Duration duration = Duration.zero,
+    Duration duration = const Duration(milliseconds: 300),
     Curve curve = Curves.ease,
     ScrollPositionAlignmentPolicy alignmentPolicy =
         ScrollPositionAlignmentPolicy.explicit,
   }) {
-    assert(index >= 0);
-    final pageKey = _pageGlobalKeys[index];
-    Scrollable.ensureVisible(pageKey.currentContext!,
+    assert(index >= 0, 'Index of page cannot be negative');
+    final pageContext = _pageGlobalKeys[index].currentContext;
+    assert(pageContext != null, 'Context of GlobalKey cannot be null');
+    return Scrollable.ensureVisible(pageContext!,
         duration: duration, curve: curve, alignmentPolicy: alignmentPolicy);
   }
 

From 1c895b099a86881c9e27d6f667a66e1ef09c77dc Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Mon, 22 Jan 2024 08:18:36 +0100
Subject: [PATCH 09/14] Make `pageGlobalKeys` populated once

---
 printing/lib/src/preview/custom.dart | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/printing/lib/src/preview/custom.dart b/printing/lib/src/preview/custom.dart
index 3b1d7441..68d5be20 100644
--- a/printing/lib/src/preview/custom.dart
+++ b/printing/lib/src/preview/custom.dart
@@ -110,7 +110,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     with PdfPreviewRaster {
   final listView = GlobalKey();
 
-  late List<GlobalKey> _pageGlobalKeys;
+  List<GlobalKey> _pageGlobalKeys = <GlobalKey>[];
 
   bool infoLoaded = false;
 
@@ -174,6 +174,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     super.didChangeDependencies();
   }
 
+  /// Ensures that page with [index] is become visible.
   Future<void> scrollToPage(
     int index, {
     Duration duration = const Duration(milliseconds: 300),
@@ -188,6 +189,9 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
         duration: duration, curve: curve, alignmentPolicy: alignmentPolicy);
   }
 
+  /// Returns the global key for page with [index].
+  Key getPageKey(int index) => _pageGlobalKeys[index];
+
   Widget _showError(Object error) {
     if (widget.onError != null) {
       return widget.onError!(context, error);
@@ -213,10 +217,12 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
           );
     }
 
-    _pageGlobalKeys = List.generate(
-      pages.length,
-      (index) => GlobalKey(debugLabel: 'pdf-page-$index'),
-    );
+    if (_pageGlobalKeys.isEmpty) {
+      _pageGlobalKeys = List.generate(
+        pages.length,
+        (index) => GlobalKey(debugLabel: 'pdf-page-$index'),
+      );
+    }
 
     if (widget.pagesBuilder != null) {
       return widget.pagesBuilder!(context, pages);
@@ -237,7 +243,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
           });
         },
         child: PdfPreviewPage(
-          key: _pageGlobalKeys[index],
+          key: getPageKey(index),
           pageData: pages[index],
           pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
           pageMargin: widget.previewPageMargin,

From 95de8782c232fe404f36f47da78565b5dc958cb8 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Mon, 22 Jan 2024 08:46:31 +0100
Subject: [PATCH 10/14] Fill `pageGlobalKeys` oneach re-build

---
 printing/lib/src/preview/custom.dart | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/printing/lib/src/preview/custom.dart b/printing/lib/src/preview/custom.dart
index 68d5be20..877bb81d 100644
--- a/printing/lib/src/preview/custom.dart
+++ b/printing/lib/src/preview/custom.dart
@@ -217,12 +217,10 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
           );
     }
 
-    if (_pageGlobalKeys.isEmpty) {
-      _pageGlobalKeys = List.generate(
-        pages.length,
-        (index) => GlobalKey(debugLabel: 'pdf-page-$index'),
-      );
-    }
+    _pageGlobalKeys = List.generate(
+      pages.length,
+      (index) => GlobalKey(debugLabel: 'pdf-page-$index'),
+    );
 
     if (widget.pagesBuilder != null) {
       return widget.pagesBuilder!(context, pages);

From 750fd0fb66b68ad23d8e19b42ccae4ecfc7ee711 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Mon, 22 Jan 2024 08:59:30 +0100
Subject: [PATCH 11/14] Make `pageGlobalKeys` predefined

---
 printing/lib/src/preview/custom.dart | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/printing/lib/src/preview/custom.dart b/printing/lib/src/preview/custom.dart
index 877bb81d..6e19e9b6 100644
--- a/printing/lib/src/preview/custom.dart
+++ b/printing/lib/src/preview/custom.dart
@@ -110,7 +110,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     with PdfPreviewRaster {
   final listView = GlobalKey();
 
-  List<GlobalKey> _pageGlobalKeys = <GlobalKey>[];
+  final _pageGlobalKeys = List.generate(100, (index) => GlobalKey());
 
   bool infoLoaded = false;
 
@@ -217,11 +217,6 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
           );
     }
 
-    _pageGlobalKeys = List.generate(
-      pages.length,
-      (index) => GlobalKey(debugLabel: 'pdf-page-$index'),
-    );
-
     if (widget.pagesBuilder != null) {
       return widget.pagesBuilder!(context, pages);
     }

From 24c7f1ce7b5b9949416700c806d1ba1b7a6fcf8e Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Mon, 22 Jan 2024 09:44:46 +0100
Subject: [PATCH 12/14] Add `enableScrollToPage`

---
 printing/lib/src/preview/custom.dart      | 80 ++++++++++++++++-------
 printing/lib/src/preview/pdf_preview.dart |  7 +-
 2 files changed, 63 insertions(+), 24 deletions(-)

diff --git a/printing/lib/src/preview/custom.dart b/printing/lib/src/preview/custom.dart
index 6e19e9b6..afe1693b 100644
--- a/printing/lib/src/preview/custom.dart
+++ b/printing/lib/src/preview/custom.dart
@@ -50,6 +50,7 @@ class PdfPreviewCustom extends StatefulWidget {
     this.scrollPhysics,
     this.shrinkWrap = false,
     this.pagesBuilder,
+    this.enableScrollToPage = false,
   }) : super(key: key);
 
   /// Pdf paper page format
@@ -102,6 +103,9 @@ class PdfPreviewCustom extends StatefulWidget {
   /// their own pages.
   final CustomPdfPagesBuilder? pagesBuilder;
 
+  /// Whether scroll to page functionality enabled.
+  final bool enableScrollToPage;
+
   @override
   PdfPreviewCustomState createState() => PdfPreviewCustomState();
 }
@@ -110,7 +114,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     with PdfPreviewRaster {
   final listView = GlobalKey();
 
-  final _pageGlobalKeys = List.generate(100, (index) => GlobalKey());
+  late List<GlobalKey> _pageGlobalKeys;
 
   bool infoLoaded = false;
 
@@ -217,32 +221,62 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
           );
     }
 
+    _pageGlobalKeys = List.generate(pages.length, (index) => GlobalKey());
+
     if (widget.pagesBuilder != null) {
       return widget.pagesBuilder!(context, pages);
     }
 
-    return ListView.builder(
-      controller: scrollController,
-      shrinkWrap: widget.shrinkWrap,
-      physics: widget.scrollPhysics,
-      padding: widget.padding,
-      itemCount: pages.length,
-      itemBuilder: (BuildContext context, int index) => GestureDetector(
-        onDoubleTap: () {
-          setState(() {
-            updatePosition = scrollController.position.pixels;
-            preview = index;
-            transformationController.value.setIdentity();
-          });
-        },
-        child: PdfPreviewPage(
-          key: getPageKey(index),
-          pageData: pages[index],
-          pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
-          pageMargin: widget.previewPageMargin,
-        ),
-      ),
-    );
+    return widget.enableScrollToPage
+        ? Scrollbar(
+            controller: scrollController,
+            child: SingleChildScrollView(
+              controller: scrollController,
+              physics: widget.scrollPhysics,
+              child: Column(
+                children: List.generate(
+                  pages.length,
+                  (index) => GestureDetector(
+                    onDoubleTap: () {
+                      setState(() {
+                        updatePosition = scrollController.position.pixels;
+                        preview = index;
+                        transformationController.value.setIdentity();
+                      });
+                    },
+                    child: PdfPreviewPage(
+                      key: getPageKey(index),
+                      pageData: pages[index],
+                      pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
+                      pageMargin: widget.previewPageMargin,
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          )
+        : ListView.builder(
+            controller: scrollController,
+            shrinkWrap: widget.shrinkWrap,
+            physics: widget.scrollPhysics,
+            padding: widget.padding,
+            itemCount: pages.length,
+            itemBuilder: (BuildContext context, int index) => GestureDetector(
+              onDoubleTap: () {
+                setState(() {
+                  updatePosition = scrollController.position.pixels;
+                  preview = index;
+                  transformationController.value.setIdentity();
+                });
+              },
+              child: PdfPreviewPage(
+                key: getPageKey(index),
+                pageData: pages[index],
+                pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
+                pageMargin: widget.previewPageMargin,
+              ),
+            ),
+          );
   }
 
   Widget _zoomPreview() {
diff --git a/printing/lib/src/preview/pdf_preview.dart b/printing/lib/src/preview/pdf_preview.dart
index 6fc3b346..c322e64d 100644
--- a/printing/lib/src/preview/pdf_preview.dart
+++ b/printing/lib/src/preview/pdf_preview.dart
@@ -64,6 +64,7 @@ class PdfPreview extends StatefulWidget {
     this.onPageFormatChanged,
     this.dpi,
     this.actionBarTheme = const PdfActionBarTheme(),
+    this.enableScrollToPage = false,
   })  : _pagesBuilder = null,
         super(key: key);
 
@@ -123,6 +124,7 @@ class PdfPreview extends StatefulWidget {
     this.dpi,
     this.actionBarTheme = const PdfActionBarTheme(),
     required CustomPdfPagesBuilder pagesBuilder,
+    this.enableScrollToPage = false,
   })  : _pagesBuilder = pagesBuilder,
         super(key: key);
 
@@ -233,6 +235,9 @@ class PdfPreview extends StatefulWidget {
   /// their own pages.
   final CustomPdfPagesBuilder? _pagesBuilder;
 
+  /// Whether scroll to page functionality enabled.
+  final bool enableScrollToPage;
+
   @override
   PdfPreviewState createState() => PdfPreviewState();
 }
@@ -302,7 +307,6 @@ class PdfPreviewState extends State<PdfPreview> {
         initialPageFormat: previewData.pageFormat,
         onComputeActualPageFormat: computeActualPageFormat,
       );
-      setState(() {});
     }
     super.didUpdateWidget(oldWidget);
   }
@@ -406,6 +410,7 @@ class PdfPreviewState extends State<PdfPreview> {
                 shouldRepaint: widget.shouldRepaint,
                 pagesBuilder: widget._pagesBuilder,
                 dpi: widget.dpi,
+                enableScrollToPage: widget.enableScrollToPage,
               );
             }),
           ),

From 8bfcced0490ba5ca8d5eb5b045637a723bda4271 Mon Sep 17 00:00:00 2001
From: Aleksei <130981115+MacDeveloper1@users.noreply.github.com>
Date: Mon, 22 Jan 2024 10:24:39 +0100
Subject: [PATCH 13/14] Minor optimization

---
 printing/lib/src/preview/custom.dart | 55 ++++++++++++----------------
 1 file changed, 23 insertions(+), 32 deletions(-)

diff --git a/printing/lib/src/preview/custom.dart b/printing/lib/src/preview/custom.dart
index afe1693b..4ec78075 100644
--- a/printing/lib/src/preview/custom.dart
+++ b/printing/lib/src/preview/custom.dart
@@ -114,7 +114,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
     with PdfPreviewRaster {
   final listView = GlobalKey();
 
-  late List<GlobalKey> _pageGlobalKeys;
+  List<GlobalKey> _pageGlobalKeys = <GlobalKey>[];
 
   bool infoLoaded = false;
 
@@ -221,36 +221,41 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
           );
     }
 
-    _pageGlobalKeys = List.generate(pages.length, (index) => GlobalKey());
+    if (widget.enableScrollToPage) {
+      _pageGlobalKeys = List.generate(pages.length, (_) => GlobalKey());
+    }
 
     if (widget.pagesBuilder != null) {
       return widget.pagesBuilder!(context, pages);
     }
 
+    Widget pageWidget(int index, {Key? key}) => GestureDetector(
+          onDoubleTap: () {
+            setState(() {
+              updatePosition = scrollController.position.pixels;
+              preview = index;
+              transformationController.value.setIdentity();
+            });
+          },
+          child: PdfPreviewPage(
+            key: key,
+            pageData: pages[index],
+            pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
+            pageMargin: widget.previewPageMargin,
+          ),
+        );
+
     return widget.enableScrollToPage
         ? Scrollbar(
             controller: scrollController,
             child: SingleChildScrollView(
               controller: scrollController,
               physics: widget.scrollPhysics,
+              padding: widget.padding,
               child: Column(
                 children: List.generate(
                   pages.length,
-                  (index) => GestureDetector(
-                    onDoubleTap: () {
-                      setState(() {
-                        updatePosition = scrollController.position.pixels;
-                        preview = index;
-                        transformationController.value.setIdentity();
-                      });
-                    },
-                    child: PdfPreviewPage(
-                      key: getPageKey(index),
-                      pageData: pages[index],
-                      pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
-                      pageMargin: widget.previewPageMargin,
-                    ),
-                  ),
+                  (index) => pageWidget(index, key: getPageKey(index)),
                 ),
               ),
             ),
@@ -261,21 +266,7 @@ class PdfPreviewCustomState extends State<PdfPreviewCustom>
             physics: widget.scrollPhysics,
             padding: widget.padding,
             itemCount: pages.length,
-            itemBuilder: (BuildContext context, int index) => GestureDetector(
-              onDoubleTap: () {
-                setState(() {
-                  updatePosition = scrollController.position.pixels;
-                  preview = index;
-                  transformationController.value.setIdentity();
-                });
-              },
-              child: PdfPreviewPage(
-                key: getPageKey(index),
-                pageData: pages[index],
-                pdfPreviewPageDecoration: widget.pdfPreviewPageDecoration,
-                pageMargin: widget.previewPageMargin,
-              ),
-            ),
+            itemBuilder: (BuildContext context, int index) => pageWidget(index),
           );
   }
 

From 50ea984043f26a77b9285e3c367c57cec1cdc5bd Mon Sep 17 00:00:00 2001
From: David PHAM-VAN <dev.nfet.net@gmail.com>
Date: Sat, 27 Jan 2024 11:53:47 -0400
Subject: [PATCH 14/14] Update changelog

---
 printing/CHANGELOG.md | 3 ++-
 printing/pubspec.yaml | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/printing/CHANGELOG.md b/printing/CHANGELOG.md
index badbf2f4..e8d2766c 100644
--- a/printing/CHANGELOG.md
+++ b/printing/CHANGELOG.md
@@ -1,8 +1,9 @@
 # Changelog
 
-## 5.11.2
+## 5.12.0
 
 - Refactor html imports
+- Implement PdfActionBarTheme for actions bar and add method scrollToPage [Aleksei]
 
 ## 5.11.1
 
diff --git a/printing/pubspec.yaml b/printing/pubspec.yaml
index 115c777d..caa5877e 100644
--- a/printing/pubspec.yaml
+++ b/printing/pubspec.yaml
@@ -15,7 +15,7 @@ topics:
   - print
   - printing
   - report
-version: 5.11.2
+version: 5.12.0
 
 environment:
   sdk: ">=3.0.0 <4.0.0"