Allow windowhandles with NO_INPUT_CHANNEL - DO NOT MERGE

This allows container surfaces to be considered visible in
InputDispatcher and prevent touches from passing through them. In
particular this is used by ActivityRecordInputSink to block touches that
would otherwise pass through the area available to the activity.

Bug: 194480991
Bug: 222292477
Test: Manually tested that blocking still works
Test: atest InputSurfacesTest
Change-Id: Iacfc952139311363b914b1d6bffc2b4190133d02
(cherry picked from commit a18588206c240b34128bb27e3ac875af17fce7f2)

2 files changed, 61 insertions, 34 deletions

diff --git a/libs/gui/tests/EndToEndNativeInputTest.cpp b/libs/gui/tests/EndToEndNativeInputTest.cpp
index f60a58f60b..53e4af4454 100644
--- a/libs/gui/tests/EndToEndNativeInputTest.cpp
+++ b/libs/gui/tests/EndToEndNativeInputTest.cpp
@@ -69,16 +69,39 @@ static constexpr std::chrono::nanoseconds DISPATCHING_TIMEOUT = 5s;
 
 class InputSurface {
 public:
-    InputSurface(const sp<SurfaceControl> &sc, int width, int height) {
+    InputSurface(const sp<SurfaceControl> &sc, int width, int height, bool noInputChannel = false) {
         mSurfaceControl = sc;
 
         mInputFlinger = getInputFlinger();
-        mClientChannel = std::make_shared<InputChannel>();
-        mInputFlinger->createInputChannel("testchannels", mClientChannel.get());
+        if (noInputChannel) {
+            mInputInfo.inputFeatures = InputWindowInfo::Feature::NO_INPUT_CHANNEL;
+        } else {
+            mClientChannel = std::make_shared<InputChannel>();
+            mInputFlinger->createInputChannel("testchannels", mClientChannel.get());
+            mInputInfo.token = mClientChannel->getConnectionToken();
+            mInputConsumer = new InputConsumer(mClientChannel);
+        }
 
-        populateInputInfo(width, height);
+        mInputInfo.name = "Test info";
+        mInputInfo.dispatchingTimeout = 5s;
+        mInputInfo.globalScaleFactor = 1.0;
+        mInputInfo.flags = InputWindowInfo::Flag::NOT_TOUCH_MODAL;
+        mInputInfo.type = InputWindowInfo::Type::BASE_APPLICATION;
+        mInputInfo.focusable = true;
+        mInputInfo.hasWallpaper = false;
+        mInputInfo.paused = false;
+        // TODO: Fill in from SF?
+        mInputInfo.ownerPid = 11111;
+        mInputInfo.ownerUid = 11111;
+        mInputInfo.displayId = 0;
+        mInputInfo.touchableRegion.orSelf(Rect(0, 0, width, height));
 
-        mInputConsumer = new InputConsumer(mClientChannel);
+        InputApplicationInfo aInfo;
+        aInfo.token = new BBinder();
+        aInfo.name = "Test app info";
+        aInfo.dispatchingTimeoutMillis =
+                std::chrono::duration_cast<std::chrono::milliseconds>(DISPATCHING_TIMEOUT).count();
+        mInputInfo.applicationInfo = aInfo;
     }
 
     static std::unique_ptr<InputSurface> makeColorInputSurface(const sp<SurfaceComposerClient> &scc,
@@ -107,6 +130,16 @@ public:
         return std::make_unique<InputSurface>(surfaceControl, width, height);
     }
 
+    static std::unique_ptr<InputSurface> makeContainerInputSurfaceNoInputChannel(
+            const sp<SurfaceComposerClient> &scc, int width, int height) {
+        sp<SurfaceControl> surfaceControl =
+                scc->createSurface(String8("Test Container Surface"), 0 /* bufHeight */,
+                                   0 /* bufWidth */, PIXEL_FORMAT_RGBA_8888,
+                                   ISurfaceComposerClient::eFXSurfaceContainer);
+        return std::make_unique<InputSurface>(surfaceControl, width, height,
+                                              true /* noInputChannel */);
+    }
+
     static std::unique_ptr<InputSurface> makeCursorInputSurface(
             const sp<SurfaceComposerClient> &scc, int width, int height) {
         sp<SurfaceControl> surfaceControl =
@@ -193,7 +226,9 @@ public:
     }
 
     virtual ~InputSurface() {
-        mInputFlinger->removeInputChannel(mClientChannel->getConnectionToken());
+        if (mClientChannel) {
+            mInputFlinger->removeInputChannel(mClientChannel->getConnectionToken());
+        }
     }
 
     virtual void doTransaction(
@@ -237,32 +272,6 @@ private:
         poll(&fd, 1, timeoutMs);
     }
 
-    void populateInputInfo(int width, int height) {
-        mInputInfo.token = mClientChannel->getConnectionToken();
-        mInputInfo.name = "Test info";
-        mInputInfo.flags = InputWindowInfo::Flag::NOT_TOUCH_MODAL;
-        mInputInfo.type = InputWindowInfo::Type::BASE_APPLICATION;
-        mInputInfo.dispatchingTimeout = 5s;
-        mInputInfo.globalScaleFactor = 1.0;
-        mInputInfo.focusable = true;
-        mInputInfo.hasWallpaper = false;
-        mInputInfo.paused = false;
-
-        mInputInfo.touchableRegion.orSelf(Rect(0, 0, width, height));
-
-        // TODO: Fill in from SF?
-        mInputInfo.ownerPid = 11111;
-        mInputInfo.ownerUid = 11111;
-        mInputInfo.displayId = 0;
-
-        InputApplicationInfo aInfo;
-        aInfo.token = new BBinder();
-        aInfo.name = "Test app info";
-        aInfo.dispatchingTimeoutMillis =
-                std::chrono::duration_cast<std::chrono::milliseconds>(DISPATCHING_TIMEOUT).count();
-
-        mInputInfo.applicationInfo = aInfo;
-    }
 public:
     sp<SurfaceControl> mSurfaceControl;
     std::shared_ptr<InputChannel> mClientChannel;
@@ -818,4 +827,21 @@ TEST_F(InputSurfacesTest, touch_not_obscured_with_zero_sized_blast) {
     surface->expectTap(1, 1);
 }
 
+TEST_F(InputSurfacesTest, child_container_with_no_input_channel_blocks_parent) {
+    std::unique_ptr<InputSurface> parent = makeSurface(100, 100);
+
+    parent->showAt(100, 100);
+    injectTap(101, 101);
+    parent->expectTap(1, 1);
+
+    std::unique_ptr<InputSurface> childContainerSurface =
+            InputSurface::makeContainerInputSurfaceNoInputChannel(mComposerClient, 100, 100);
+    childContainerSurface->showAt(0, 0);
+    childContainerSurface->doTransaction(
+            [&](auto &t, auto &sc) { t.reparent(sc, parent->mSurfaceControl); });
+    injectTap(101, 101);
+
+    EXPECT_EQ(parent->consumeEvent(100), nullptr);
+}
+
 } // namespace android::test
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 71e4791fe9..6a967d2982 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -2151,7 +2151,7 @@ void Layer::writeToProtoCommonState(LayerProto* layerInfo, LayerVector::StateSet
         layerInfo->set_owner_uid(mOwnerUid);
     }
 
-    if (traceFlags & SurfaceTracing::TRACE_INPUT) {
+    if (traceFlags & SurfaceTracing::TRACE_INPUT && needsInputInfo()) {
         InputWindowInfo info;
         if (useDrawing) {
             info = fillInputInfo({nullptr});
@@ -2399,7 +2399,8 @@ sp<Layer> Layer::getClonedRoot() {
 }
 
 bool Layer::hasInputInfo() const {
-    return mDrawingState.inputInfo.token != nullptr;
+    return mDrawingState.inputInfo.token != nullptr ||
+            mDrawingState.inputInfo.inputFeatures.test(InputWindowInfo::Feature::NO_INPUT_CHANNEL);
 }
 
 bool Layer::canReceiveInput() const {