changed scaling grid style to match content

lib/widgets/collection/collection_grid.dart

@@ -54,7 +54,7 @@ class _CollectionGridState extends State<CollectionGrid> {
       settingsRouteKey: widget.settingsRouteKey ?? context.currentRouteName!,
       columnCountDefault: 4,
       extentMin: 46,
-      spacing: 0,
+      spacing: 2,
     );
     return TileExtentControllerProvider(
       controller: _tileExtentController!,
@@ -191,13 +191,12 @@ class _CollectionScaler extends StatelessWidget {
       scrollableKey: scrollableKey,
       appBarHeightNotifier: appBarHeightNotifier,
       gridBuilder: (center, extent, child) => CustomPaint(
-        // painting the thumbnail half-border on top of the grid yields artifacts,
+        painter: GridPainter(
-        // so we use a `foregroundPainter` to cover them instead
-        foregroundPainter: GridPainter(
           center: center,
           extent: extent,
           spacing: tileSpacing,
-          strokeWidth: DecoratedThumbnail.borderWidth * 2,
+          borderWidth: DecoratedThumbnail.borderWidth,
+          borderRadius: Radius.zero,
           color: DecoratedThumbnail.borderColor,
         ),
         child: child,

lib/widgets/common/scaling.dart

@@ -252,15 +252,16 @@ class _ScaleOverlayState extends State<ScaleOverlay> {
 
 class GridPainter extends CustomPainter {
   final Offset center;
-  final double extent, spacing;
+  final double extent, spacing, borderWidth;
-  final double strokeWidth;
+  final Radius borderRadius;
   final Color color;
 
   const GridPainter({
     required this.center,
     required this.extent,
-    this.spacing = 0.0,
+    required this.spacing,
-    this.strokeWidth = 1.0,
+    required this.borderWidth,
+    required this.borderRadius,
     required this.color,
   });
 
@@ -268,7 +269,8 @@ class GridPainter extends CustomPainter {
   void paint(Canvas canvas, Size size) {
     final radius = extent * 3;
     final paint = Paint()
-      ..strokeWidth = strokeWidth
+      ..style = PaintingStyle.stroke
+      ..strokeWidth = borderWidth
       ..shader = ui.Gradient.radial(
         center,
         radius,
@@ -281,18 +283,26 @@ class GridPainter extends CustomPainter {
           1,
         ],
       );
-    void draw(Offset topLeft) {
-      for (var i = -1; i <= 2; i++) {
-        final ref = (extent + spacing) * i;
-        canvas.drawLine(Offset(0, topLeft.dy + ref), Offset(size.width, topLeft.dy + ref), paint);
-        canvas.drawLine(Offset(topLeft.dx + ref, 0), Offset(topLeft.dx + ref, size.height), paint);
-      }
-    }
 
-    final topLeft = center.translate(-extent / 2, -extent / 2);
+    // final topLeft = center.translate(-extent / 2, -extent / 2);
-    draw(topLeft);
+    final delta = extent + spacing;
-    if (spacing > 0) {
+    for (var i = -2; i <= 2; i++) {
-      draw(topLeft.translate(-spacing, -spacing));
+      final dx = delta * i;
+      for (var j = -2; j <= 2; j++) {
+        if (i == 0 && j == 0) continue;
+        final dy = delta * j;
+        canvas.drawRRect(
+          RRect.fromRectAndRadius(
+            Rect.fromCenter(
+              center: center + Offset(dx, dy),
+              width: extent,
+              height: extent,
+            ),
+            borderRadius,
+          ),
+          paint,
+        );
+      }
     }
   }
 

lib/widgets/filter_grids/common/decorated_filter_chip.dart

@@ -77,6 +77,8 @@ class DecoratedFilterChip extends StatelessWidget {
     );
   }
 
+  static Radius radius(double extent) => Radius.circular(min<double>(AvesFilterChip.defaultRadius, extent / 4));
+
   Widget _buildChip(CollectionSource source) {
     final entry = coverEntry ?? source.coverEntry(filter);
     final backgroundImage = entry == null
@@ -90,9 +92,8 @@ class DecoratedFilterChip extends StatelessWidget {
                 entry: entry,
                 extent: extent,
               );
-    final radius = min<double>(AvesFilterChip.defaultRadius, extent / 4);
     final titlePadding = min<double>(4.0, extent / 32);
-    final borderRadius = BorderRadius.circular(radius);
+    final borderRadius = BorderRadius.all(radius(extent));
     Widget child = AvesFilterChip(
       filter: filter,
       showGenericIcon: false,

lib/widgets/filter_grids/common/filter_grid_page.dart

@@ -380,6 +380,8 @@ class _FilterScaler<T extends CollectionFilter> extends StatelessWidget {
           center: center,
           extent: extent,
           spacing: tileSpacing,
+          borderWidth: AvesFilterChip.outlineWidth,
+          borderRadius: DecoratedFilterChip.radius(extent),
           color: Colors.grey.shade700,
         ),
         child: child,