✨ added print option. #22

Author: adeeteya

lib/home.dart

@@ -6,16 +6,20 @@ import 'package:file_picker/file_picker.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:htmltopdfwidgets/htmltopdfwidgets.dart' as html2pdf;
+import 'package:markdown/markdown.dart' as md;
 import 'package:markdown_editor/device_preference_notifier.dart';
 import 'package:markdown_editor/l10n/generated/app_localizations.dart';
 import 'package:markdown_editor/widgets/MarkdownBody/custom_image_config.dart';
 import 'package:markdown_editor/widgets/MarkdownBody/custom_text_node.dart';
 import 'package:markdown_editor/widgets/MarkdownBody/latex_node.dart';
 import 'package:markdown_editor/widgets/MarkdownTextInput/markdown_text_input.dart';
 import 'package:markdown_widget/markdown_widget.dart';
+import 'package:pdf/widgets.dart' as pw;
+import 'package:printing/printing.dart';
 import 'package:url_launcher/url_launcher.dart';
 
-enum MenuItem { switchTheme, switchView, open, clear, save, donate }
+enum MenuItem { switchTheme, switchView, open, clear, save, print, donate }
 
 class Home extends StatefulWidget {
   final DevicePreferenceNotifier devicePreferenceNotifier;
@@ -206,6 +210,28 @@ class _HomeState extends State<Home> {
     }
   }
 
+  Future<void> _printFile() async {
+    if (_inputText.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(AppLocalizations.of(context)!.emptyInputTextContent),
+        ),
+      );
+      return;
+    } else {
+      final htmlFromMarkdown = md.markdownToHtml(_inputText);
+      await Printing.layoutPdf(
+        usePrinterSettings: true,
+        onLayout: (format) async {
+          final pdf = pw.Document();
+          final widgets = await html2pdf.HTMLToPdf().convert(htmlFromMarkdown);
+          pdf.addPage(pw.MultiPage(build: (context) => widgets));
+          return pdf.save();
+        },
+      );
+    }
+  }
+
   Future<bool> _showExitConfirmationDialog() async {
     return await showDialog<bool>(
           context: context,
@@ -366,6 +392,9 @@ class _HomeState extends State<Home> {
                     case MenuItem.save:
                       await _saveFile();
                       break;
+                    case MenuItem.print:
+                      await _printFile();
+                      break;
                     case MenuItem.donate:
                       await launchUrl(
                         Uri.parse("https://buymeacoffee.com/adeeteya"),
@@ -429,6 +458,16 @@ class _HomeState extends State<Home> {
                       ],
                     ),
                   ),
+                  PopupMenuItem(
+                    value: MenuItem.print,
+                    child: Row(
+                      children: [
+                        const Icon(Icons.print),
+                        const SizedBox(width: 8),
+                        Text(AppLocalizations.of(context)!.print),
+                      ],
+                    ),
+                  ),
                   PopupMenuItem(
                     value: MenuItem.donate,
                     child: Row(

lib/l10n/app_en.arb

@@ -134,5 +134,9 @@
   "donate": "Donate",
   "@donate": {
     "description": "Menu Item for Donate"
+  },
+  "print": "Print",
+  "@print": {
+    "description": "Menu Item for Print"
   }
 }

linux/flutter/generated_plugin_registrant.cc

@@ -6,9 +6,13 @@
 
 #include "generated_plugin_registrant.h"
 
+#include <printing/printing_plugin.h>
 #include <url_launcher_linux/url_launcher_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
+  g_autoptr(FlPluginRegistrar) printing_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "PrintingPlugin");
+  printing_plugin_register_with_registrar(printing_registrar);
   g_autoptr(FlPluginRegistrar) url_launcher_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "UrlLauncherPlugin");
   url_launcher_plugin_register_with_registrar(url_launcher_linux_registrar);

linux/flutter/generated_plugins.cmake

@@ -3,6 +3,7 @@
 #
 
 list(APPEND FLUTTER_PLUGIN_LIST
+  printing
   url_launcher_linux
 )
 

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -6,11 +6,13 @@ import FlutterMacOS
 import Foundation
 
 import file_picker
+import printing
 import shared_preferences_foundation
 import url_launcher_macos
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FilePickerPlugin.register(with: registry.registrar(forPlugin: "FilePickerPlugin"))
+  PrintingPlugin.register(with: registry.registrar(forPlugin: "PrintingPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
   UrlLauncherPlugin.register(with: registry.registrar(forPlugin: "UrlLauncherPlugin"))
 }

macos/Runner/DebugProfile.entitlements

@@ -8,5 +8,7 @@
 	<true/>
 	<key>com.apple.security.network.server</key>
 	<true/>
+	<key>com.apple.security.print</key>
+    <true/>
 </dict>
 </plist>

macos/Runner/Release.entitlements

@@ -4,5 +4,7 @@
 <dict>
 	<key>com.apple.security.app-sandbox</key>
 	<true/>
+	<key>com.apple.security.print</key>
+    <true/>
 </dict>
 </plist>

pubspec.lock

@@ -1,6 +1,14 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      sha256: "2fde1607386ab523f7a36bb3e7edb43bd58e6edaf2ffb29d8a6d578b297fdbbd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.7"
   args:
     dependency: transitive
     description:
@@ -17,6 +25,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.13.0"
+  barcode:
+    dependency: transitive
+    description:
+      name: barcode
+      sha256: "7b6729c37e3b7f34233e2318d866e8c48ddb46c1f7ad01ff7bb2a8de1da2b9f4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.9"
+  bidi:
+    dependency: transitive
+    description:
+      name: bidi
+      sha256: "77f475165e94b261745cf1032c751e2032b8ed92ccb2bf5716036db79320637d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.13"
   boolean_selector:
     dependency: transitive
     description:
@@ -57,6 +81,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.3.4+2"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: "1e445881f28f22d6140f181e07737b22f1e099a5e1ff94b0af2f9e4a463f4855"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.6"
   csslib:
     dependency: transitive
     description:
@@ -197,6 +229,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.15.6"
+  htmltopdfwidgets:
+    dependency: "direct main"
+    description:
+      name: htmltopdfwidgets
+      sha256: e2c42dc784fa884eee0f29bbced6555a1a4cb0a3171c7d334cb5ca64a3854d77
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.3"
   http:
     dependency: transitive
     description:
@@ -213,6 +253,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.1.2"
+  image:
+    dependency: transitive
+    description:
+      name: image
+      sha256: "4e973fcf4caae1a4be2fa0a13157aa38a8f9cb049db6529aa00b4d71abc4d928"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.5.4"
   intl:
     dependency: "direct main"
     description:
@@ -349,6 +397,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.0"
+  pdf:
+    dependency: "direct main"
+    description:
+      name: pdf
+      sha256: "28eacad99bffcce2e05bba24e50153890ad0255294f4dd78a17075a2ba5c8416"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.11.3"
+  pdf_widget_wrapper:
+    dependency: transitive
+    description:
+      name: pdf_widget_wrapper
+      sha256: c930860d987213a3d58c7ec3b7ecf8085c3897f773e8dc23da9cae60a5d6d0f5
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
   permission_handler:
     dependency: "direct main"
     description:
@@ -421,6 +485,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.8"
+  posix:
+    dependency: transitive
+    description:
+      name: posix
+      sha256: "6323a5b0fa688b6a010df4905a56b00181479e6d10534cecfecede2aa55add61"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.3"
+  printing:
+    dependency: "direct main"
+    description:
+      name: printing
+      sha256: "482cd5a5196008f984bb43ed0e47cbfdca7373490b62f3b27b3299275bf22a93"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.14.2"
   provider:
     dependency: transitive
     description:
@@ -429,6 +509,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.1.5+1"
+  qr:
+    dependency: transitive
+    description:
+      name: qr
+      sha256: "5a1d2586170e172b8a8c8470bbbffd5eb0cd38a66c0d77155ea138d3af3a4445"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
   scroll_to_index:
     dependency: transitive
     description:

pubspec.yaml

@@ -20,10 +20,13 @@ dependencies:
   flutter_svg: ^2.2.1
   flutter_widget_from_html_core: ^0.17.0
   html: ^0.15.6
+  htmltopdfwidgets: ^1.1.3
   intl: any
   markdown: ^7.3.0
   markdown_widget: ^2.3.2+8
+  pdf: ^3.11.3
   permission_handler: ^12.0.1
+  printing: ^5.14.2
   shared_preferences: ^2.5.3
   url_launcher: ^6.3.2