From 55b28d3ad97672ff597b3157dc5bcce49f8a8863 Mon Sep 17 00:00:00 2001
From: Chris Yang <ychris@google.com>
Date: Tue, 14 Feb 2023 11:33:27 -0800
Subject: [PATCH] test

more comments
---
 .../Source/FlutterPlatformViews_Internal.mm   |   5 ++
 .../Scenarios.xcodeproj/project.pbxproj       |   4 ++
 .../ios/Scenarios/Scenarios/AppDelegate.m     |   3 +-
 .../ScenariosUITests/GoldenTestManager.m      |   1 +
 .../ScenariosUITests/PlatformViewUITests.m    |  30 ++++++++++
 ...ct_after_moved_iPhone 8_16.0_simulator.png | Bin 0 -> 17964 bytes
 .../scenario_app/lib/src/platform_view.dart   |  55 ++++++++++++++++++
 testing/scenario_app/lib/src/scenarios.dart   |   1 +
 8 files changed, 98 insertions(+), 1 deletion(-)
 create mode 100644 testing/scenario_app/ios/Scenarios/ScenariosUITests/golden_platform_view_cliprect_after_moved_iPhone 8_16.0_simulator.png

diff --git a/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews_Internal.mm b/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews_Internal.mm
index da7f156bafe95..9520e37ede0f8 100644
--- a/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews_Internal.mm
+++ b/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews_Internal.mm
@@ -271,6 +271,11 @@ - (instancetype)initWithFrame:(CGRect)frame screenScale:(CGFloat)screenScale {
   return self;
 }
 
+- (void)reset {
+  paths_.clear();
+  [self setNeedsDisplay];
+}
+
 // In some scenarios, when we add this view as a maskView of the ChildClippingView, iOS added
 // this view as a subview of the ChildClippingView.
 // This results this view blocking touch events on the ChildClippingView.
diff --git a/testing/scenario_app/ios/Scenarios/Scenarios.xcodeproj/project.pbxproj b/testing/scenario_app/ios/Scenarios/Scenarios.xcodeproj/project.pbxproj
index 5294a9b254c98..cb6fa4b3e23a1 100644
--- a/testing/scenario_app/ios/Scenarios/Scenarios.xcodeproj/project.pbxproj
+++ b/testing/scenario_app/ios/Scenarios/Scenarios.xcodeproj/project.pbxproj
@@ -37,6 +37,7 @@
 		6816DB9E231750ED00A51400 /* GoldenPlatformViewTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 6816DB9D231750ED00A51400 /* GoldenPlatformViewTests.m */; };
 		6816DBA12317573300A51400 /* GoldenImage.m in Sources */ = {isa = PBXBuildFile; fileRef = 6816DBA02317573300A51400 /* GoldenImage.m */; };
 		6816DBA42318358200A51400 /* GoldenTestManager.m in Sources */ = {isa = PBXBuildFile; fileRef = 6816DBA32318358200A51400 /* GoldenTestManager.m */; };
+		682C5873299C182A00915E5C /* golden_platform_view_cliprect_after_moved_iPhone 8_16.0_simulator.png in Resources */ = {isa = PBXBuildFile; fileRef = 682C5872299C182A00915E5C /* golden_platform_view_cliprect_after_moved_iPhone 8_16.0_simulator.png */; };
 		685B9F392977B73100B45442 /* golden_platform_view_large_cliprrect_with_transform_iPhone 8_16.0_simulator.png in Resources */ = {isa = PBXBuildFile; fileRef = 685B9F372977B73100B45442 /* golden_platform_view_large_cliprrect_with_transform_iPhone 8_16.0_simulator.png */; };
 		685B9F3A2977B73100B45442 /* golden_platform_view_large_cliprrect_iPhone 8_16.0_simulator.png in Resources */ = {isa = PBXBuildFile; fileRef = 685B9F382977B73100B45442 /* golden_platform_view_large_cliprrect_iPhone 8_16.0_simulator.png */; };
 		687AF8E9291EBDE0003912C7 /* golden_platform_view_clippath_with_transform_iPhone 8_16.0_simulator.png in Resources */ = {isa = PBXBuildFile; fileRef = 687AF8E8291EBDE0003912C7 /* golden_platform_view_clippath_with_transform_iPhone 8_16.0_simulator.png */; };
@@ -153,6 +154,7 @@
 		6816DBA02317573300A51400 /* GoldenImage.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = GoldenImage.m; sourceTree = "<group>"; };
 		6816DBA22318358200A51400 /* GoldenTestManager.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GoldenTestManager.h; sourceTree = "<group>"; };
 		6816DBA32318358200A51400 /* GoldenTestManager.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = GoldenTestManager.m; sourceTree = "<group>"; };
+		682C5872299C182A00915E5C /* golden_platform_view_cliprect_after_moved_iPhone 8_16.0_simulator.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "golden_platform_view_cliprect_after_moved_iPhone 8_16.0_simulator.png"; sourceTree = "<group>"; };
 		685B9F372977B73100B45442 /* golden_platform_view_large_cliprrect_with_transform_iPhone 8_16.0_simulator.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "golden_platform_view_large_cliprrect_with_transform_iPhone 8_16.0_simulator.png"; sourceTree = "<group>"; };
 		685B9F382977B73100B45442 /* golden_platform_view_large_cliprrect_iPhone 8_16.0_simulator.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "golden_platform_view_large_cliprrect_iPhone 8_16.0_simulator.png"; sourceTree = "<group>"; };
 		687AF8E8291EBDE0003912C7 /* golden_platform_view_clippath_with_transform_iPhone 8_16.0_simulator.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "golden_platform_view_clippath_with_transform_iPhone 8_16.0_simulator.png"; sourceTree = "<group>"; };
@@ -300,6 +302,7 @@
 		F7B464DC2759D02B00079189 /* Goldens */ = {
 			isa = PBXGroup;
 			children = (
+				682C5872299C182A00915E5C /* golden_platform_view_cliprect_after_moved_iPhone 8_16.0_simulator.png */,
 				685B9F382977B73100B45442 /* golden_platform_view_large_cliprrect_iPhone 8_16.0_simulator.png */,
 				685B9F372977B73100B45442 /* golden_platform_view_large_cliprrect_with_transform_iPhone 8_16.0_simulator.png */,
 				68D50041291ED8CD001ACFE1 /* golden_platform_view_cliprect_with_transform_iPhone 8_16.0_simulator.png */,
@@ -447,6 +450,7 @@
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				682C5873299C182A00915E5C /* golden_platform_view_cliprect_after_moved_iPhone 8_16.0_simulator.png in Resources */,
 				68D50042291ED8CD001ACFE1 /* golden_platform_view_cliprect_with_transform_iPhone 8_16.0_simulator.png in Resources */,
 				F7B464F62759D0A900079189 /* golden_non_full_screen_flutter_view_platform_view_iPhone 8_16.0_simulator.png in Resources */,
 				F7B464F02759D0A900079189 /* golden_bogus_font_text_iPhone 8_16.0_simulator.png in Resources */,
diff --git a/testing/scenario_app/ios/Scenarios/Scenarios/AppDelegate.m b/testing/scenario_app/ios/Scenarios/Scenarios/AppDelegate.m
index 5118a4e6b4ad8..2711d846bc631 100644
--- a/testing/scenario_app/ios/Scenarios/Scenarios/AppDelegate.m
+++ b/testing/scenario_app/ios/Scenarios/Scenarios/AppDelegate.m
@@ -66,7 +66,8 @@ - (BOOL)application:(UIApplication*)application
     @"--bogus-font-text" : @"bogus_font_text",
     @"--spawn-engine-works" : @"spawn_engine_works",
     @"--pointer-events" : @"pointer_events",
-    @"--platform-view-scrolling-under-widget" : @"platform_view_scrolling_under_widget"
+    @"--platform-view-scrolling-under-widget" : @"platform_view_scrolling_under_widget",
+    @"--platform-view-cliprect-after-moved" : @"platform_view_cliprect_after_moved"
   };
   __block NSString* flutterViewControllerTestName = nil;
   [launchArgsMap
diff --git a/testing/scenario_app/ios/Scenarios/ScenariosUITests/GoldenTestManager.m b/testing/scenario_app/ios/Scenarios/ScenariosUITests/GoldenTestManager.m
index 26838a3a47497..6ecb07a7c7c5d 100644
--- a/testing/scenario_app/ios/Scenarios/ScenariosUITests/GoldenTestManager.m
+++ b/testing/scenario_app/ios/Scenarios/ScenariosUITests/GoldenTestManager.m
@@ -46,6 +46,7 @@ - (instancetype)initWithLaunchArg:(NSString*)launchArg {
             @"non_full_screen_flutter_view_platform_view",
         @"--bogus-font-text" : @"bogus_font_text",
         @"--spawn-engine-works" : @"spawn_engine_works",
+        @"--platform-view-cliprect-after-moved" : @"platform_view_cliprect_after_moved",
       };
     });
     _identifier = launchArgsMap[launchArg];
diff --git a/testing/scenario_app/ios/Scenarios/ScenariosUITests/PlatformViewUITests.m b/testing/scenario_app/ios/Scenarios/ScenariosUITests/PlatformViewUITests.m
index a37122b1a44a6..47d49f3c7779c 100644
--- a/testing/scenario_app/ios/Scenarios/ScenariosUITests/PlatformViewUITests.m
+++ b/testing/scenario_app/ios/Scenarios/ScenariosUITests/PlatformViewUITests.m
@@ -98,6 +98,36 @@ - (void)testPlatformView {
 
 @end
 
+@interface PlatformViewMutationClipRectAfterMovedTests : GoldenPlatformViewTests
+
+@end
+
+@implementation PlatformViewMutationClipRectAfterMovedTests
+
+- (instancetype)initWithInvocation:(NSInvocation*)invocation {
+  GoldenTestManager* manager =
+      [[GoldenTestManager alloc] initWithLaunchArg:@"--platform-view-cliprect-after-moved"];
+  return [super initWithManager:manager invocation:invocation];
+}
+
+- (void)testPlatformView {
+  // This test needs to wait for several frames for the PlatformView to settle to
+  // the correct position. The PlatformView accessiblity is set to platform_view[10000] when it is
+  // ready.
+  XCUIElement* element = self.application.otherElements[@"platform_view[10000]"];
+  BOOL exists = [element waitForExistenceWithTimeout:kSecondsToWaitForPlatformView];
+  if (!exists) {
+    XCTFail(@"It took longer than %@ second to find the platform view."
+            @"There might be issues with the platform view's construction,"
+            @"or with how the scenario is built.",
+            @(kSecondsToWaitForPlatformView));
+  }
+
+  [self checkPlatformViewGolden];
+}
+
+@end
+
 @interface PlatformViewMutationClipRRectTests : GoldenPlatformViewTests
 
 @end
diff --git a/testing/scenario_app/ios/Scenarios/ScenariosUITests/golden_platform_view_cliprect_after_moved_iPhone 8_16.0_simulator.png b/testing/scenario_app/ios/Scenarios/ScenariosUITests/golden_platform_view_cliprect_after_moved_iPhone 8_16.0_simulator.png
new file mode 100644
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HcmV?d00001

diff --git a/testing/scenario_app/lib/src/platform_view.dart b/testing/scenario_app/lib/src/platform_view.dart
index 96384f1079bd3..adcb6dd73677b 100644
--- a/testing/scenario_app/lib/src/platform_view.dart
+++ b/testing/scenario_app/lib/src/platform_view.dart
@@ -573,6 +573,61 @@ class PlatformViewClipRectScenario extends Scenario with _BasePlatformViewScenar
   }
 }
 
+/// Platform view with clip rect then the PlatformView is moved for 10 frames.
+///
+/// The clip rect moves with the same transform matrix with the PlatformView.
+class PlatformViewClipRectAfterMovedScenario extends Scenario with _BasePlatformViewScenarioMixin {
+  /// Constructs a platform view with clip rect scenario.
+  PlatformViewClipRectAfterMovedScenario(
+    PlatformDispatcher dispatcher, {
+    required this.id,
+  }) : super(dispatcher);
+
+  /// The platform view identifier.
+  final int id;
+
+  int _numberOfFrames = 0;
+
+  double _y = 100.0;
+
+  @override
+  void onBeginFrame(Duration duration) {
+    final Matrix4 translateMatrix = Matrix4.identity()..translate(0.0, _y);
+    final SceneBuilder builder = SceneBuilder()
+      ..pushTransform(translateMatrix.storage)
+      ..pushClipRect(const Rect.fromLTRB(100, 100, 400, 400));
+
+    addPlatformView(
+      _numberOfFrames == 10? 10000:id,
+      dispatcher: dispatcher,
+      sceneBuilder: builder,
+    );
+
+    // Add a translucent rect that has the same size of PlatformView.
+    final PictureRecorder recorder = PictureRecorder();
+    final Canvas canvas = Canvas(recorder);
+    canvas.drawRect(
+      const Rect.fromLTWH(0, 0, 500, 500),
+      Paint()..color = const Color(0x22FF0000),
+    );
+    final Picture picture = recorder.endRecording();
+    builder.addPicture(Offset.zero, picture);
+
+    finishBuilder(builder);
+    super.onBeginFrame(duration);
+  }
+
+  @override
+  void onDrawFrame() {
+    if (_numberOfFrames < 10) {
+      _numberOfFrames ++;
+      _y -= 10;
+      window.scheduleFrame();
+    }
+    super.onDrawFrame();
+  }
+}
+
 /// Platform view with clip rrect.
 class PlatformViewClipRRectScenario extends PlatformViewScenario {
   /// Constructs a platform view with clip rrect scenario.
diff --git a/testing/scenario_app/lib/src/scenarios.dart b/testing/scenario_app/lib/src/scenarios.dart
index 61c9437cb0ae5..94445d4254291 100644
--- a/testing/scenario_app/lib/src/scenarios.dart
+++ b/testing/scenario_app/lib/src/scenarios.dart
@@ -32,6 +32,7 @@ Map<String, ScenarioFactory> _scenarios = <String, ScenarioFactory>{
   'platform_view_max_overlays': () => PlatformViewMaxOverlaysScenario(PlatformDispatcher.instance, id: _viewId++),
   'platform_view_cliprect': () => PlatformViewClipRectScenario(PlatformDispatcher.instance, id: _viewId++),
   'platform_view_cliprect_with_transform': () => PlatformViewClipRectWithTransformScenario(PlatformDispatcher.instance, id: _viewId++),
+  'platform_view_cliprect_after_moved': () => PlatformViewClipRectAfterMovedScenario(PlatformDispatcher.instance, id: _viewId++),
   'platform_view_cliprrect': () => PlatformViewClipRRectScenario(PlatformDispatcher.instance, id: _viewId++),
   'platform_view_large_cliprrect': () => PlatformViewLargeClipRRectScenario(PlatformDispatcher.instance, id: _viewId++),
   'platform_view_cliprrect_with_transform': () => PlatformViewClipRRectWithTransformScenario(PlatformDispatcher.instance, id: _viewId++),