From e6f6ad04ed1e0e73fc260a0100d5759a0456fdd6 Mon Sep 17 00:00:00 2001
From: Michael Wright <michaelwr@google.com>
Date: Mon, 22 Jun 2015 16:18:21 +0100
Subject: [PATCH] DO NOT MERGE. Cancel touches as well as pointer gestures.

Bug: 19264992
Change-Id: If48e0953b972c9d69f516906adf7c6faf67e3eb8
---
 services/inputflinger/InputReader.cpp | 29 ++++++++++++++++++++++++---
 services/inputflinger/InputReader.h   |  4 ++++
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/services/inputflinger/InputReader.cpp b/services/inputflinger/InputReader.cpp
index ccf8ced55..006ec6bb8 100644
--- a/services/inputflinger/InputReader.cpp
+++ b/services/inputflinger/InputReader.cpp
@@ -3721,6 +3721,7 @@ void TouchInputMapper::reset(nsecs_t when) {
     mLastMouseIdBits.clear();
     mPointerUsage = POINTER_USAGE_NONE;
     mSentHoverEnter = false;
+    mCurrentMotionAborted = false;
     mDownTime = 0;
 
     mCurrentVirtualKey.down = false;
@@ -3874,10 +3875,15 @@ void TouchInputMapper::sync(nsecs_t when) {
                         mCurrentCookedPointerData.idToIndex,
                         mCurrentCookedPointerData.touchingIdBits);
             }
+            if (!mCurrentMotionAborted) {
+                dispatchHoverExit(when, policyFlags);
+                dispatchTouches(when, policyFlags);
+                dispatchHoverEnterAndMove(when, policyFlags);
+            }
 
-            dispatchHoverExit(when, policyFlags);
-            dispatchTouches(when, policyFlags);
-            dispatchHoverEnterAndMove(when, policyFlags);
+            if (mCurrentCookedPointerData.pointerCount == 0) {
+                mCurrentMotionAborted = false;
+            }
         }
 
         // Synthesize key up from raw buttons if needed.
@@ -4018,6 +4024,22 @@ void TouchInputMapper::dispatchVirtualKey(nsecs_t when, uint32_t policyFlags,
     getListener()->notifyKey(&args);
 }
 
+void TouchInputMapper::abortTouches(nsecs_t when, uint32_t policyFlags) {
+    BitSet32 currentIdBits = mCurrentCookedPointerData.touchingIdBits;
+    if (!currentIdBits.isEmpty()) {
+        int32_t metaState = getContext()->getGlobalMetaState();
+        int32_t buttonState = mCurrentButtonState;
+        dispatchMotion(when, policyFlags, mSource, AMOTION_EVENT_ACTION_CANCEL, 0,
+                metaState, buttonState, AMOTION_EVENT_EDGE_FLAG_NONE,
+                mCurrentCookedPointerData.pointerProperties,
+                mCurrentCookedPointerData.pointerCoords,
+                mCurrentCookedPointerData.idToIndex,
+                currentIdBits, -1,
+                mOrientedXPrecision, mOrientedYPrecision, mDownTime);
+        mCurrentMotionAborted = true;
+    }
+}
+
 void TouchInputMapper::dispatchTouches(nsecs_t when, uint32_t policyFlags) {
     BitSet32 currentIdBits = mCurrentCookedPointerData.touchingIdBits;
     BitSet32 lastIdBits = mLastCookedPointerData.touchingIdBits;
@@ -5733,6 +5755,7 @@ void TouchInputMapper::fadePointer() {
 
 void TouchInputMapper::cancelTouch(nsecs_t when) {
     abortPointerUsage(when, 0 /*policyFlags*/);
+    abortTouches(when, 0 /* policyFlags*/);
 }
 
 bool TouchInputMapper::isPointInsideSurface(int32_t x, int32_t y) {
diff --git a/services/inputflinger/InputReader.h b/services/inputflinger/InputReader.h
index 34f20af47..62cd36a57 100644
--- a/services/inputflinger/InputReader.h
+++ b/services/inputflinger/InputReader.h
@@ -1364,6 +1364,9 @@ protected:
     // True if we sent a HOVER_ENTER event.
     bool mSentHoverEnter;
 
+    // Is the current stream of direct touch events aborted
+    bool mCurrentMotionAborted;
+
     // The time the primary pointer last went down.
     nsecs_t mDownTime;
 
@@ -1688,6 +1691,7 @@ private:
 
     void dispatchPointerUsage(nsecs_t when, uint32_t policyFlags, PointerUsage pointerUsage);
     void abortPointerUsage(nsecs_t when, uint32_t policyFlags);
+    void abortTouches(nsecs_t when, uint32_t policyFlags);
 
     void dispatchPointerGestures(nsecs_t when, uint32_t policyFlags, bool isTimeout);
     void abortPointerGestures(nsecs_t when, uint32_t policyFlags);