Save image option (#593)

* Save image option

* Update android versions

* Refactor code

example/android/app/build.gradle

@@ -44,7 +44,7 @@ android {
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.example.app"
-        minSdkVersion 17
+        minSdkVersion 21
         targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName

example/android/build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.3.50'
+    ext.kotlin_version = '1.6.10'
     repositories {
         google()
         mavenCentral()

lib/src/utils/simple_dialog_item.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+
+class SimpleDialogItem extends StatelessWidget {
+  const SimpleDialogItem(
+      {required this.icon,
+      required this.color,
+      required this.text,
+      required this.onPressed,
+      Key? key})
+      : super(key: key);
+
+  final IconData icon;
+  final Color color;
+  final String text;
+  final VoidCallback onPressed;
+
+  @override
+  Widget build(BuildContext context) {
+    return SimpleDialogOption(
+      onPressed: onPressed,
+      child: Row(
+        children: [
+          Icon(icon, size: 36, color: color),
+          Padding(
+            padding: const EdgeInsetsDirectional.only(start: 16),
+            child:
+                Text(text, style: const TextStyle(fontWeight: FontWeight.bold)),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/src/widgets/editor.dart

@@ -1,5 +1,3 @@
-import 'dart:convert';
-import 'dart:io' as io;
 import 'dart:math' as math;
 
 import 'package:flutter/cupertino.dart';
@@ -8,13 +6,14 @@ import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
-import 'package:string_validator/string_validator.dart';
+import 'package:gallery_saver/gallery_saver.dart';
 
 import '../models/documents/document.dart';
 import '../models/documents/nodes/container.dart' as container_node;
 import '../models/documents/nodes/leaf.dart' as leaf;
 import '../models/documents/nodes/line.dart';
 import '../utils/platform_helper.dart';
+import '../utils/simple_dialog_item.dart';
 import '../utils/string_helper.dart';
 import 'box.dart';
 import 'controller.dart';
@@ -187,38 +186,53 @@ Widget defaultEmbedBuilder(
           final a = getAlignment(_attrs['mobileAlignment']);
           image = Padding(
               padding: EdgeInsets.all(m),
-              child: imageUrl.startsWith('http')
-                  ? Image.network(imageUrl, width: w, height: h, alignment: a)
-                  : isBase64(imageUrl)
-                      ? Image.memory(base64.decode(imageUrl),
-                          width: w, height: h, alignment: a)
-                      : Image.file(io.File(imageUrl),
-                          width: w, height: h, alignment: a));
+              child: imageByUrl(imageUrl, width: w, height: h, alignment: a));
         }
       }
-      image ??= imageUrl.startsWith('http')
-          ? Image.network(imageUrl)
-          : isBase64(imageUrl)
-              ? Image.memory(base64.decode(imageUrl))
-              : Image.file(io.File(imageUrl));
+      image ??= imageByUrl(imageUrl);
 
-      if (!readOnly) {
+      if (!readOnly || !isMobile() || isImageBase64(imageUrl)) {
         return image;
       }
 
+      /// We provide option menu only for mobile platform excluding base64
       return GestureDetector(
           onTap: () {
-            Navigator.push(
-                context,
-                MaterialPageRoute(
-                    builder: (context) => ImageTapWrapper(
-                          imageProvider: imageUrl.startsWith('http')
-                              ? NetworkImage(imageUrl)
-                              : isBase64(imageUrl)
-                                  ? Image.memory(base64.decode(imageUrl))
-                                      as ImageProvider<Object>?
-                                  : FileImage(io.File(imageUrl)),
-                        )));
+            showDialog(
+                context: context,
+                builder: (context) => Padding(
+                      padding: const EdgeInsets.fromLTRB(50, 0, 50, 0),
+                      child: SimpleDialog(
+                          shape: const RoundedRectangleBorder(
+                              borderRadius:
+                                  BorderRadius.all(Radius.circular(10))),
+                          children: [
+                            SimpleDialogItem(
+                              icon: Icons.save,
+                              color: Colors.greenAccent,
+                              text: 'Save',
+                              onPressed: () {
+                                // TODO: improve this
+                                GallerySaver.saveImage(imageUrl).then((_) =>
+                                    ScaffoldMessenger.of(context).showSnackBar(
+                                        const SnackBar(
+                                            content: Text('Saved'))));
+                              },
+                            ),
+                            SimpleDialogItem(
+                              icon: Icons.zoom_in,
+                              color: Colors.cyanAccent,
+                              text: 'Zoom',
+                              onPressed: () {
+                                Navigator.push(
+                                    context,
+                                    MaterialPageRoute(
+                                        builder: (context) => ImageTapWrapper(
+                                            imageUrl: imageUrl)));
+                              },
+                            )
+                          ]),
+                    ));
           },
           child: image);
     case 'video':

lib/src/widgets/embeds/image.dart

@@ -1,12 +1,45 @@
+import 'dart:convert';
+import 'dart:io' as io;
+
 import 'package:flutter/material.dart';
 import 'package:photo_view/photo_view.dart';
+import 'package:string_validator/string_validator.dart';
+
+bool isImageBase64(String imageUrl) {
+  return !imageUrl.startsWith('http') && isBase64(imageUrl);
+}
+
+Widget imageByUrl(String imageUrl,
+    {double? width,
+    double? height,
+    AlignmentGeometry alignment = Alignment.center}) {
+  if (isImageBase64(imageUrl)) {
+    return Image.memory(base64.decode(imageUrl),
+        width: width, height: height, alignment: alignment);
+  }
+
+  if (imageUrl.startsWith('http')) {
+    return Image.network(imageUrl,
+        width: width, height: height, alignment: alignment);
+  }
+  return Image.file(io.File(imageUrl),
+      width: width, height: height, alignment: alignment);
+}
 
 class ImageTapWrapper extends StatelessWidget {
   const ImageTapWrapper({
-    this.imageProvider,
+    required this.imageUrl,
   });
 
-  final ImageProvider? imageProvider;
+  final String imageUrl;
+
+  ImageProvider _imageProviderByUrl(String imageUrl) {
+    if (imageUrl.startsWith('http')) {
+      return NetworkImage(imageUrl);
+    }
+
+    return FileImage(io.File(imageUrl));
+  }
 
   @override
   Widget build(BuildContext context) {
@@ -18,7 +51,7 @@ class ImageTapWrapper extends StatelessWidget {
         child: Stack(
           children: [
             PhotoView(
-              imageProvider: imageProvider,
+              imageProvider: _imageProviderByUrl(imageUrl),
               loadingBuilder: (context, event) {
                 return Container(
                   color: Colors.black,

pubspec.yaml

@@ -27,6 +27,7 @@ dependencies:
   youtube_player_flutter: ^8.0.0
   diff_match_patch: ^0.4.1
   i18n_extension: ^4.1.3
+  gallery_saver: ^2.3.2
 
 dev_dependencies:
   flutter_test: