From 7c48ce83bc63c3283c07b62a5edc6ea9ffd3b49a Mon Sep 17 00:00:00 2001
From: Prabir Pradhan <prabirmsp@google.com>
Date: Tue, 10 Nov 2020 17:26:05 -0800
Subject: [PATCH] SyncPointerCapture (4/n): Receive capture events in
 InputEventReceiver

Since a capture event was added to the InputChannel, this CL lets
InputEventReceiver receive the capture events sent by the publisher.

Bug: 141749603
Test: build, crosshatch boots
Change-Id: I608f3cf86d96e4d2b00b28f88fa2b7aa6e83b6dc
---
 core/java/android/view/InputEventReceiver.java | 14 ++++++++++++++
 core/jni/android_view_InputEventReceiver.cpp   | 17 +++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/core/java/android/view/InputEventReceiver.java b/core/java/android/view/InputEventReceiver.java
index 038dff654ba6f..7d1adc36964bb 100644
--- a/core/java/android/view/InputEventReceiver.java
+++ b/core/java/android/view/InputEventReceiver.java
@@ -143,6 +143,20 @@ public abstract class InputEventReceiver {
     public void onFocusEvent(boolean hasFocus, boolean inTouchMode) {
     }
 
+    /**
+     * Called when a Pointer Capture event is received.
+     *
+     * @param pointerCaptureEnabled if true, the window associated with this input channel has just
+     *                              received Pointer Capture
+     *                              if false, the window associated with this input channel has just
+     *                              lost Pointer Capture
+     * @see View#requestPointerCapture()
+     * @see View#releasePointerCapture()
+     */
+    // Called from native code.
+    public void onPointerCaptureEvent(boolean pointerCaptureEnabled) {
+    }
+
     /**
      * Called when a batched input event is pending.
      *
diff --git a/core/jni/android_view_InputEventReceiver.cpp b/core/jni/android_view_InputEventReceiver.cpp
index 1ea918a900ad6..1c78750f36102 100644
--- a/core/jni/android_view_InputEventReceiver.cpp
+++ b/core/jni/android_view_InputEventReceiver.cpp
@@ -50,6 +50,7 @@ static struct {
 
     jmethodID dispatchInputEvent;
     jmethodID onFocusEvent;
+    jmethodID onPointerCaptureEvent;
     jmethodID onBatchedInputEventPending;
 } gInputEventReceiverClassInfo;
 
@@ -345,6 +346,19 @@ status_t NativeInputEventReceiver::consumeEvents(JNIEnv* env,
                 finishInputEvent(seq, true /* handled */);
                 continue;
             }
+            case AINPUT_EVENT_TYPE_CAPTURE: {
+                const CaptureEvent* captureEvent = static_cast<CaptureEvent*>(inputEvent);
+                if (kDebugDispatchCycle) {
+                    ALOGD("channel '%s' ~ Received capture event: pointerCaptureEnabled=%s",
+                          getInputChannelName().c_str(),
+                          toString(captureEvent->getPointerCaptureEnabled()));
+                }
+                env->CallVoidMethod(receiverObj.get(),
+                                    gInputEventReceiverClassInfo.onPointerCaptureEvent,
+                                    jboolean(captureEvent->getPointerCaptureEnabled()));
+                finishInputEvent(seq, true /* handled */);
+                continue;
+            }
 
             default:
                 assert(false); // InputConsumer should prevent this from ever happening
@@ -489,6 +503,9 @@ int register_android_view_InputEventReceiver(JNIEnv* env) {
             "dispatchInputEvent", "(ILandroid/view/InputEvent;)V");
     gInputEventReceiverClassInfo.onFocusEvent =
             GetMethodIDOrDie(env, gInputEventReceiverClassInfo.clazz, "onFocusEvent", "(ZZ)V");
+    gInputEventReceiverClassInfo.onPointerCaptureEvent =
+            GetMethodIDOrDie(env, gInputEventReceiverClassInfo.clazz, "onPointerCaptureEvent",
+                             "(Z)V");
     gInputEventReceiverClassInfo.onBatchedInputEventPending =
             GetMethodIDOrDie(env, gInputEventReceiverClassInfo.clazz, "onBatchedInputEventPending",
                              "(I)V");