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)
(cherry picked from commit c7df484a6f4265d20418fc64c46ead350f794a0c)
Merged-In: Iacfc952139311363b914b1d6bffc2b4190133d02

2 files changed, 61 insertions, 35 deletions

diff --git a/libs/gui/tests/EndToEndNativeInputTest.cpp b/libs/gui/tests/EndToEndNativeInputTest.cpp
index 8e42c688af..e3f4798019 100644
--- a/libs/gui/tests/EndToEndNativeInputTest.cpp
+++ b/libs/gui/tests/EndToEndNativeInputTest.cpp
@@ -66,17 +66,40 @@ static const int LAYER_BASE = INT32_MAX - 10;
 
 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;
 
-        InputChannel::openInputChannelPair("testchannels", mServerChannel, mClientChannel);
-
         mInputFlinger = getInputFlinger();
-        mInputFlinger->registerInputChannel(mServerChannel);
+        if (noInputChannel) {
+            mInputInfo.inputFeatures = InputWindowInfo::INPUT_FEATURE_NO_INPUT_CHANNEL;
+        } else {
+            InputChannel::openInputChannelPair("testchannels", mServerChannel, mClientChannel);
+            mInputFlinger->registerInputChannel(mServerChannel);
+            mInputInfo.token = mServerChannel->getConnectionToken();
+            mInputConsumer = new InputConsumer(mClientChannel);
+        }
 
-        populateInputInfo(width, height);
+        mInputInfo.name = "Test info";
+        mInputInfo.layoutParamsFlags = InputWindowInfo::FLAG_NOT_TOUCH_MODAL;
+        mInputInfo.layoutParamsType = InputWindowInfo::TYPE_BASE_APPLICATION;
+        mInputInfo.dispatchingTimeout = seconds_to_nanoseconds(5);
+        mInputInfo.globalScaleFactor = 1.0;
+        mInputInfo.canReceiveKeys = true;
+        mInputInfo.hasFocus = 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.inputFeatures = 0;
+        mInputInfo.displayId = 0;
 
-        mInputConsumer = new InputConsumer(mClientChannel);
+        InputApplicationInfo aInfo;
+        aInfo.token = new BBinder();
+        aInfo.name = "Test app info";
+        aInfo.dispatchingTimeout = seconds_to_nanoseconds(5);
+        mInputInfo.applicationInfo = aInfo;
     }
 
     static std::unique_ptr<InputSurface> makeColorInputSurface(const sp<SurfaceComposerClient> &scc,
@@ -105,6 +128,16 @@ 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 =
@@ -173,7 +206,9 @@ public:
     }
 
     ~InputSurface() {
-        mInputFlinger->unregisterInputChannel(mServerChannel);
+        if (mInputInfo.token) {
+            mInputFlinger->unregisterInputChannel(mServerChannel);
+        }
     }
 
     void doTransaction(std::function<void(SurfaceComposerClient::Transaction&,
@@ -203,33 +238,6 @@ private:
         poll(&fd, 1, timeoutMs);
     }
 
-    void populateInputInfo(int width, int height) {
-        mInputInfo.token = mServerChannel->getConnectionToken();
-        mInputInfo.name = "Test info";
-        mInputInfo.layoutParamsFlags = InputWindowInfo::FLAG_NOT_TOUCH_MODAL;
-        mInputInfo.layoutParamsType = InputWindowInfo::TYPE_BASE_APPLICATION;
-        mInputInfo.dispatchingTimeout = seconds_to_nanoseconds(5);
-        mInputInfo.globalScaleFactor = 1.0;
-        mInputInfo.canReceiveKeys = true;
-        mInputInfo.hasFocus = 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.inputFeatures = 0;
-        mInputInfo.displayId = 0;
-
-        InputApplicationInfo aInfo;
-        aInfo.token = new BBinder();
-        aInfo.name = "Test app info";
-        aInfo.dispatchingTimeout = seconds_to_nanoseconds(5);
-
-        mInputInfo.applicationInfo = aInfo;
-    }
 public:
     sp<SurfaceControl> mSurfaceControl;
     sp<InputChannel> mServerChannel, mClientChannel;
@@ -589,6 +597,23 @@ TEST_F(InputSurfacesTest, input_ignores_cursor_layer) {
     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);
+    parent->assertFocusChange(true);
+    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->getHandle()); });
+    injectTap(101, 101);
+
+    EXPECT_EQ(parent->consumeEvent(100), nullptr);
+}
+
 TEST_F(InputSurfacesTest, drop_input_policy) {
     std::unique_ptr<InputSurface> surface = makeSurface(100, 100);
     surface->doTransaction(
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 6a0623e8cc..6215d5cecc 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -2529,7 +2529,8 @@ sp<Layer> Layer::getClonedRoot() {
 }
 
 bool Layer::hasInputInfo() const {
-    return mDrawingState.inputInfo.token != nullptr;
+    return mDrawingState.inputInfo.token != nullptr ||
+            mDrawingState.inputInfo.inputFeatures & InputWindowInfo::INPUT_FEATURE_NO_INPUT_CHANNEL;
 }
 
 bool Layer::canReceiveInput() const {