commit 05dc66ada6b61a6bdf806ffaa62617ac5394695d
author Jeff Brown <jeffbrown@google.com> Wed Mar 02 14:41:58 2011 -0800
committer Jeff Brown <jeffbrown@google.com> Wed Mar 02 15:37:57 2011 -0800
tree a7e395476241706de31498185a5c2ccb979bcb54
parent e43111fad31ad8e36a66df52a8c6002799996413

Fade out the mouse pointer after inactivity or other events.

Fades out the mouse pointer:
- after 15 seconds of inactivity normally
- after 3 seconds of inactivity in lights out mode
- after a non-modifier key down
- after a touch down

Extended the native Looper to support enqueuing time delayed
messages.  This is used by the PointerController to control
pointer fade timing.

Change-Id: I87792fea7dbe2d9376c78cf354fe3189a484d9da

services/input/InputReader.cpp

diff --git a/services/input/InputReader.cpp b/services/input/InputReader.cpp
index a865d9f..c3c143c 100644
--- a/services/input/InputReader.cpp
+++ b/services/input/InputReader.cpp
@@ -399,6 +399,17 @@
     }
 }
 
+void InputReader::fadePointer() {
+    { // acquire device registry reader lock
+        RWLock::AutoRLock _rl(mDeviceRegistryLock);
+
+        for (size_t i = 0; i < mDevices.size(); i++) {
+            InputDevice* device = mDevices.valueAt(i);
+            device->fadePointer();
+        }
+    } // release device registry reader lock
+}
+
 void InputReader::getInputConfiguration(InputConfiguration* outConfiguration) {
     { // acquire state lock
         AutoMutex _l(mStateLock);
@@ -695,6 +706,14 @@
     return result;
 }
 
+void InputDevice::fadePointer() {
+    size_t numMappers = mMappers.size();
+    for (size_t i = 0; i < numMappers; i++) {
+        InputMapper* mapper = mMappers[i];
+        mapper->fadePointer();
+    }
+}
+
 
 // --- InputMapper ---
 
@@ -739,6 +758,9 @@
     return 0;
 }
 
+void InputMapper::fadePointer() {
+}
+
 void InputMapper::dumpRawAbsoluteAxisInfo(String8& dump,
         const RawAbsoluteAxisInfo& axis, const char* name) {
     if (axis.valid) {
@@ -967,6 +989,10 @@
         getContext()->updateGlobalMetaState();
     }
 
+    if (down && !isMetaKey(keyCode)) {
+        getContext()->fadePointer();
+    }
+
     if (policyFlags & POLICY_FLAG_FUNCTION) {
         newMetaState |= AMETA_FUNCTION_ON;
     }
@@ -1348,6 +1374,9 @@
         } else {
             hscroll = 0;
         }
+        if (hscroll != 0 || vscroll != 0) {
+            mPointerController->unfade();
+        }
     } // release lock
 
     int32_t metaState = mContext->getGlobalMetaState();
@@ -1376,6 +1405,13 @@
     }
 }
 
+void CursorInputMapper::fadePointer() {
+    { // acquire lock
+        AutoMutex _l(mLock);
+        mPointerController->fade();
+    } // release lock
+}
+
 
 // --- TouchInputMapper ---
 
@@ -2275,7 +2311,6 @@
     uint32_t policyFlags = 0;
 
     // Preprocess pointer data.
-
     if (mParameters.useBadTouchFilter) {
         if (applyBadTouchFilter()) {
             havePointerIds = false;
@@ -2303,8 +2338,12 @@
         savedTouch = & mCurrentTouch;
     }
 
-    // Process touches and virtual keys.
+    // Hide the pointer on an initial down.
+    if (mLastTouch.pointerCount == 0 && mCurrentTouch.pointerCount != 0) {
+        getContext()->fadePointer();
+    }
 
+    // Process touches and virtual keys.
     TouchResult touchResult = consumeOffScreenTouches(when, policyFlags);
     if (touchResult == DISPATCH_TOUCH) {
         detectGestures(when);
@@ -2312,7 +2351,6 @@
     }
 
     // Copy current touch to last touch in preparation for the next cycle.
-
     if (touchResult == DROP_STROKE) {
         mLastTouch.clear();
     } else {