Merge pull request #2011 from appwrite/CLO-4195-flutter-viewport-width

Send viewport width from Flutter tracking events

Author: lohanidamodar

templates/flutter/lib/src/tracking.dart.twig

@@ -127,6 +127,7 @@ class Tracking with WidgetsBindingObserver {
                   url == null
                       ? this.url
                       : Uri.parse(this.url).resolve(url).toString(),
+              screenWidth: _viewportWidth(),
               engagementTime: engagementTime,
               // The endpoint takes props as a flat alternating key/value list.
               props:
@@ -141,6 +142,16 @@ class Tracking with WidgetsBindingObserver {
     }
   }
 
+  // The endpoint buckets this as viewport width in logical pixels, matching
+  // the Web helper's `innerWidth`, so physical width is divided by the ratio.
+  int? _viewportWidth() {
+    final view = PlatformDispatcher.instance.implicitView;
+    if (view == null || view.physicalSize.width == 0) {
+      return null;
+    }
+    return (view.physicalSize.width / view.devicePixelRatio).round();
+  }
+
   /// Mobile-idiomatic screen-view shortcut. Renders as a `screen_view`
   /// analytics event with `screen`, optional `screenClass` and any
   /// caller-supplied properties. [name] is also the event URL's path.