feat: Added transfer logic for waveshare displays to work with the image library (#146)

Author: Vishveshwara

lib/image_library/services/image_operations_service.dart

@@ -7,8 +7,7 @@ import 'package:magicepaperapp/image_library/model/saved_image_model.dart';
 import 'package:magicepaperapp/constants/color_constants.dart';
 import 'package:magicepaperapp/image_library/provider/image_library_provider.dart';
 import 'package:magicepaperapp/image_library/utils/epd_utils.dart';
-import 'package:magicepaperapp/util/epd/epd.dart';
-import 'package:magicepaperapp/util/protocol.dart';
+import 'package:magicepaperapp/util/epd/display_device.dart';
 import 'package:image/image.dart' as img;
 import 'dart:typed_data';
 
@@ -17,7 +16,7 @@ class ImageOperationsService {
 
   ImageOperationsService(this.context);
 
-  Epd getEpdFromImage(SavedImage image) {
+  DisplayDevice getEpdFromImage(SavedImage image) {
     return EpdUtils.getEpdFromMetadata(image.metadata);
   }
 
@@ -117,7 +116,10 @@ class ImageOperationsService {
       final decodedImage = img.decodeImage(imageData);
       if (decodedImage != null) {
         final rotatedImage = img.copyRotate(decodedImage, angle: -90);
-        Protocol(epd: imageEpd).writeImages(rotatedImage);
+        imageEpd.transfer(
+          context,
+          rotatedImage,
+        );
       } else {
         _showErrorSnackBar('Failed to decode image "${image.name}"');
       }
@@ -296,7 +298,7 @@ class ImageOperationsService {
 
   void _showSaveLoadingSnackBar() {
     ScaffoldMessenger.of(context).showSnackBar(
-      SnackBar(
+      const SnackBar(
         content: Row(
           children: [
             SizedBox(
@@ -307,28 +309,28 @@ class ImageOperationsService {
                 valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
               ),
             ),
-            const SizedBox(width: 12),
-            const Text('Saving image...'),
+            SizedBox(width: 12),
+            Text('Saving image...'),
           ],
         ),
         backgroundColor: colorAccent,
-        duration: const Duration(seconds: 2),
+        duration: Duration(seconds: 2),
       ),
     );
   }
 
   void _showSaveSuccessSnackBar() {
     ScaffoldMessenger.of(context).showSnackBar(
       SnackBar(
-        content: Row(
+        content: const Row(
           children: [
-            const Icon(
+            Icon(
               Icons.check_circle,
               color: Colors.white,
               size: 20,
             ),
-            const SizedBox(width: 12),
-            const Text('Image saved to library!'),
+            SizedBox(width: 12),
+            Text('Image saved to library!'),
           ],
         ),
         backgroundColor: Colors.green,

lib/image_library/utils/epd_utils.dart

@@ -1,13 +1,12 @@
+import 'package:magicepaperapp/util/epd/display_device.dart';
 import 'package:magicepaperapp/util/epd/gdey037z03.dart';
 import 'package:magicepaperapp/util/epd/gdey037z03bw.dart';
-import 'package:magicepaperapp/util/epd/epd.dart';
+import 'package:magicepaperapp/util/epd/waveshare_2in9.dart';
 
 class EpdUtils {
-  static Epd getEpdFromMetadata(Map<String, dynamic>? metadata) {
-    final List<Epd> displays = [Gdey037z03(), Gdey037z03BW()];
-
+  static DisplayDevice getEpdFromMetadata(Map<String, dynamic>? metadata) {
     if (metadata == null || !metadata.containsKey('epdModel')) {
-      return displays[0];
+      return Gdey037z03();
     }
 
     final String epdModel = metadata['epdModel']?.toString() ?? '';
@@ -17,8 +16,10 @@ class EpdUtils {
         return Gdey037z03();
       case 'GDEY037T03':
         return Gdey037z03BW();
+      case 'waveshare-2.9':
+        return Waveshare2in9();
       default:
-        return displays[0];
+        return Gdey037z03();
     }
   }
 }

lib/image_library/widgets/dialogs/image_preview_dialog.dart

@@ -6,12 +6,12 @@ import 'package:magicepaperapp/image_library/utils/filter_utils.dart';
 import 'package:magicepaperapp/image_library/utils/source_utils.dart';
 import 'package:magicepaperapp/image_library/widgets/dialogs/image_properties_dialog.dart';
 import 'package:magicepaperapp/image_library/widgets/dialogs/image_rename_dialog.dart';
-import 'package:magicepaperapp/util/epd/epd.dart';
+import 'package:magicepaperapp/util/epd/display_device.dart';
 import 'package:magicepaperapp/constants/color_constants.dart';
 
 class ImagePreviewDialog extends StatelessWidget {
   final SavedImage image;
-  final Epd epd;
+  final DisplayDevice epd;
   final VoidCallback onDelete;
   final Function(String) onRename;
   final VoidCallback onTransfer;