Hide InkWell hover highlight when an hovered InkWell is disabled (#118026)

Author: bleroux

packages/flutter/lib/src/material/ink_well.dart

@@ -842,21 +842,28 @@ class _InkResponseState extends State<_InkResponseStateWidget>
         widget.radius != oldWidget.radius ||
         widget.borderRadius != oldWidget.borderRadius ||
         widget.highlightShape != oldWidget.highlightShape) {
-      final InkHighlight? hoverHighLight = _highlights[_HighlightType.hover];
-      if (hoverHighLight != null) {
-        hoverHighLight.dispose();
+      final InkHighlight? hoverHighlight = _highlights[_HighlightType.hover];
+      if (hoverHighlight != null) {
+        hoverHighlight.dispose();
         updateHighlight(_HighlightType.hover, value: _hovering, callOnHover: false);
       }
-      final InkHighlight? focusHighLight = _highlights[_HighlightType.focus];
-      if (focusHighLight != null) {
-        focusHighLight.dispose();
+      final InkHighlight? focusHighlight = _highlights[_HighlightType.focus];
+      if (focusHighlight != null) {
+        focusHighlight.dispose();
         // Do not call updateFocusHighlights() here because it is called below
       }
     }
     if (enabled != isWidgetEnabled(oldWidget)) {
       statesController.update(MaterialState.disabled, !enabled);
       if (!enabled) {
         statesController.update(MaterialState.pressed, false);
+        // Remove the existing hover highlight immediately when enabled is false.
+        // Do not rely on updateHighlight or InkHighlight.deactivate to not break
+        // the expected lifecycle which is updating _hovering when the mouse exit.
+        // Manually updating _hovering here or calling InkHighlight.deactivate
+        // will lead to onHover not being called or call when it is not allowed.
+        final InkHighlight? hoverHighlight = _highlights[_HighlightType.hover];
+        hoverHighlight?.dispose();
       }
       // Don't call widget.onHover because many widgets, including the button
       // widgets, apply setState to an ancestor context from onHover.
@@ -937,7 +944,7 @@ class _InkResponseState extends State<_InkResponseStateWidget>
         _highlights[type] = InkHighlight(
           controller: Material.of(context),
           referenceBox: referenceBox,
-          color: resolvedOverlayColor,
+          color: enabled ? resolvedOverlayColor : resolvedOverlayColor.withAlpha(0),
           shape: widget.highlightShape,
           radius: widget.radius,
           borderRadius: widget.borderRadius,

packages/flutter/test/material/ink_well_test.dart

@@ -1722,6 +1722,56 @@ testWidgets('InkResponse radius can be updated', (WidgetTester tester) async {
     expect(hover, false);
   });
 
+  testWidgets('hovered ink well draws a transparent highlight when disabled', (WidgetTester tester) async {
+    Widget buildFrame({ required bool enabled }) {
+      return Material(
+        child: Directionality(
+          textDirection: TextDirection.ltr,
+          child: Center(
+            child: SizedBox(
+              width: 100,
+              height: 100,
+              child: InkWell(
+                onTap: enabled ? () { } : null,
+                onHover: (bool value) { },
+                hoverColor: const Color(0xff00ff00),
+              ),
+            ),
+          ),
+        ),
+      );
+    }
+
+    await tester.pumpWidget(buildFrame(enabled: true));
+    final TestGesture gesture = await tester.createGesture(kind: PointerDeviceKind.mouse);
+    await gesture.addPointer();
+
+    // Hover the enabled InkWell.
+    await gesture.moveTo(tester.getCenter(find.byType(InkWell)));
+    await tester.pumpAndSettle();
+    expect(
+      find.byType(Material),
+      paints
+        ..rect(
+            color: const Color(0xff00ff00),
+            rect: const Rect.fromLTRB(350.0, 250.0, 450.0, 350.0),
+          )
+    );
+
+    // Disable the hovered InkWell.
+    await tester.pumpWidget(buildFrame(enabled: false));
+    await tester.pumpAndSettle();
+    expect(
+      find.byType(Material),
+      paints
+        ..rect(
+            color: const Color(0x0000ff00),
+            rect: const Rect.fromLTRB(350.0, 250.0, 450.0, 350.0),
+          )
+    );
+  });
+
+
   testWidgets('Changing InkWell.enabled should not trigger TextButton setState()', (WidgetTester tester) async {
     Widget buildFrame({ required bool enabled }) {
       return Material(

packages/flutter/test/material/list_tile_test.dart

@@ -979,7 +979,7 @@ void main() {
       paints
         ..rect()
         ..rect(
-            color: Colors.orange[500],
+            color: Colors.orange[500]!.withAlpha(0),
             rect: const Rect.fromLTRB(350.0, 250.0, 450.0, 350.0),
           )
         ..rect(