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Fix hcpp flicker when scrolling off/on screen (#181009)
Don't apply the transaction immediately, but let it be applied with flutter frame timing. Fixes https://github.com/flutter/flutter/issues/175547 See videos: <table width="100%"> <thead> <tr> <th align="center">With Change</th> <th align="center">Without Change</th> </tr> </thead> <tbody> <tr> <td align="center" width="50%"> <video src="https://github.com/user-attachments/assets/0370a7bc-88b5-49f0-8702-ac844309a50d" controls="controls" style="max-width: 100%;"></video> </td> <td align="center" width="50%"> <video src="https://github.com/user-attachments/assets/5f18cdbe-4218-4c7d-b582-5d175aa964b6" controls="controls" style="max-width: 100%;"></video> </td> </tr> <tr> <td align="center"> <video src="https://github.com/user-attachments/assets/21ef1c37-47cc-4d04-ae49-d8acb9145aa8" controls="controls" style="max-width: 100%;"></video> </td> <td align="center"> <video src="https://github.com/user-attachments/assets/091c9ff5-0e25-4696-a006-73823fc0fd8d" controls="controls" style="max-width: 100%;"></video> </td> </tr> </tbody> </table> ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [ ] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md --------- Co-authored-by: Gray Mackall <mackall@google.com>
This commit is contained in:
Gray Mackall
GitHub
parent
f89275a408
commit
215ff2e7fe
@ -83,7 +83,8 @@ void AndroidExternalViewEmbedder2::SubmitFlutterView(
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jni_facade->hidePlatformView2(view_id);
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}
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jni_facade->applyTransaction();
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jni_facade->swapTransaction();
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jni_facade->onEndFrame2();
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}));
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views_visible_last_frame_.clear();
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return;
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@ -170,13 +171,12 @@ void AndroidExternalViewEmbedder2::SubmitFlutterView(
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slices = std::move(slices_),
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views_visible_last_frame = views_visible_last_frame_,
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overlay_layer_has_content_this_frame_]() mutable -> void {
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jni_facade->swapTransaction();
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if (overlay_layer_has_content_this_frame_) {
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ShowOverlayLayerIfNeeded();
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} else {
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HideOverlayLayerIfNeeded();
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}
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jni_facade->swapTransaction();
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for (int64_t view_id : composition_order) {
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DlRect view_rect = GetViewRect(view_id, view_params);
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@ -608,9 +608,8 @@ public class PlatformViewsController2 implements PlatformViewsAccessibilityDeleg
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if (overlaySurfaceControl == null) {
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return;
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}
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SurfaceControl.Transaction tx = new SurfaceControl.Transaction();
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SurfaceControl.Transaction tx = createTransaction();
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tx.setVisibility(overlaySurfaceControl, /*visible=*/ true);
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tx.apply();
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}
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@RequiresApi(API_LEVELS.API_34)
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@ -618,9 +617,8 @@ public class PlatformViewsController2 implements PlatformViewsAccessibilityDeleg
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if (overlaySurfaceControl == null) {
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return;
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}
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SurfaceControl.Transaction tx = new SurfaceControl.Transaction();
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SurfaceControl.Transaction tx = createTransaction();
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tx.setVisibility(overlaySurfaceControl, /*visible=*/ false);
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tx.apply();
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}
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public boolean isHcppEnabled() {
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@ -14,8 +14,10 @@ import android.content.res.AssetManager;
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import android.graphics.SurfaceTexture;
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import android.media.Image;
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import android.util.SparseArray;
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import android.view.AttachedSurfaceControl;
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import android.view.MotionEvent;
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import android.view.Surface;
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import android.view.SurfaceControl;
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import android.view.SurfaceHolder;
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import android.view.SurfaceView;
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import android.view.View;
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@ -506,6 +508,51 @@ public class PlatformViewsController2Test {
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verify(platformView, times(1)).dispose();
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}
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// Class member variable
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private SurfaceControl.Transaction mCapturedTx;
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@Test
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@Config(shadows = {ShadowFlutterJNI.class, ShadowPlatformTaskQueue.class})
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public void showOverlaySurfaceDefersTransactionUntilEndFrame() {
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PlatformViewsController2 controller =
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new PlatformViewsController2() {
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@Override
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public SurfaceControl.Transaction createTransaction() {
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// Call super to ensure the real transaction is added to the private
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// 'pendingTransactions' list
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SurfaceControl.Transaction realTx = super.createTransaction();
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// Spy on it so we can verify calls like 'apply()'
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mCapturedTx = spy(realTx);
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return mCapturedTx;
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}
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};
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PlatformViewRegistryImpl registry = new PlatformViewRegistryImpl();
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controller.setRegistry(registry);
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// Mocks
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FlutterView mockFlutterView = mock(FlutterView.class);
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AttachedSurfaceControl mockAttachedSurfaceControl = mock(AttachedSurfaceControl.class);
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when(mockFlutterView.getRootSurfaceControl()).thenReturn(mockAttachedSurfaceControl);
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when(mockAttachedSurfaceControl.buildReparentTransaction(any()))
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.thenReturn(new SurfaceControl.Transaction());
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controller.attachToView(mockFlutterView);
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controller.createOverlaySurface();
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controller.showOverlaySurface();
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assertNotNull("Transaction should have been created", mCapturedTx);
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verify(mCapturedTx, never()).apply();
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controller.swapTransactions();
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controller.onEndFrame();
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verify(mockAttachedSurfaceControl, times(1))
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.applyTransactionOnDraw(any(SurfaceControl.Transaction.class));
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}
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private static ByteBuffer encodeMethodCall(MethodCall call) {
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final ByteBuffer buffer = StandardMethodCodec.INSTANCE.encodeMethodCall(call);
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buffer.rewind();
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