commit cbba14c55c15ab3d41a4427fbb2406e6d0ade4b2
author Vaibhav Devmurari <vdevmurari@google.com> Mon Oct 10 16:54:49 2022 +0000
committer Vaibhav Devmurari <vdevmurari@google.com> Tue Dec 06 16:54:49 2022 +0000
tree f9247798ea2673cde8e4b1f96dcf40c6c61a4567
parent fc55603abca981af151a6cea915be6ca8a542545

Add API to support key remappings on native side

For adding support for modifier key remapping, we need to add
native support save key remappings and send appropriate android
key codes using KeyCharacterMap.

Test: atest KeyboardLayoutChangeTest
Bug: 252812993
Change-Id: Ib3efa866c6e6408dd11e97dfaf49feb92f48bc18

services/inputflinger/reader/include/EventHub.h

diff --git a/services/inputflinger/reader/include/EventHub.h b/services/inputflinger/reader/include/EventHub.h
index 42ca482..8a844b2 100644
--- a/services/inputflinger/reader/include/EventHub.h
+++ b/services/inputflinger/reader/include/EventHub.h
@@ -262,6 +262,9 @@
 
     virtual bool hasMscEvent(int32_t deviceId, int mscEvent) const = 0;
 
+    virtual void addKeyRemapping(int32_t deviceId, int32_t fromKeyCode,
+                                 int32_t toKeyCode) const = 0;
+
     virtual status_t mapKey(int32_t deviceId, int32_t scanCode, int32_t usageCode,
                             int32_t metaState, int32_t* outKeycode, int32_t* outMetaState,
                             uint32_t* outFlags) const = 0;
@@ -460,6 +463,9 @@
 
     bool hasMscEvent(int32_t deviceId, int mscEvent) const override final;
 
+    void addKeyRemapping(int32_t deviceId, int32_t fromKeyCode,
+                         int32_t toKeyCode) const override final;
+
     status_t mapKey(int32_t deviceId, int32_t scanCode, int32_t usageCode, int32_t metaState,
                     int32_t* outKeycode, int32_t* outMetaState,
                     uint32_t* outFlags) const override final;

services/inputflinger/reader/include/InputDevice.h

diff --git a/services/inputflinger/reader/include/InputDevice.h b/services/inputflinger/reader/include/InputDevice.h
index 439123b..6fa21e5 100644
--- a/services/inputflinger/reader/include/InputDevice.h
+++ b/services/inputflinger/reader/include/InputDevice.h
@@ -114,6 +114,8 @@
     int32_t getMetaState();
     void updateMetaState(int32_t keyCode);
 
+    void addKeyRemapping(int32_t fromKeyCode, int32_t toKeyCode);
+
     void bumpGeneration();
 
     [[nodiscard]] NotifyDeviceResetArgs notifyReset(nsecs_t when);
@@ -278,6 +280,10 @@
 
     inline bool hasMscEvent(int mscEvent) const { return mEventHub->hasMscEvent(mId, mscEvent); }
 
+    inline void addKeyRemapping(int32_t fromKeyCode, int32_t toKeyCode) const {
+        mEventHub->addKeyRemapping(mId, fromKeyCode, toKeyCode);
+    }
+
     inline status_t mapKey(int32_t scanCode, int32_t usageCode, int32_t metaState,
                            int32_t* outKeycode, int32_t* outMetaState, uint32_t* outFlags) const {
         return mEventHub->mapKey(mId, scanCode, usageCode, metaState, outKeycode, outMetaState,

services/inputflinger/reader/include/InputReader.h

diff --git a/services/inputflinger/reader/include/InputReader.h b/services/inputflinger/reader/include/InputReader.h
index 4f2503a..e9c989a 100644
--- a/services/inputflinger/reader/include/InputReader.h
+++ b/services/inputflinger/reader/include/InputReader.h
@@ -68,6 +68,8 @@
     int32_t getKeyCodeState(int32_t deviceId, uint32_t sourceMask, int32_t keyCode) override;
     int32_t getSwitchState(int32_t deviceId, uint32_t sourceMask, int32_t sw) override;
 
+    void addKeyRemapping(int32_t deviceId, int32_t fromKeyCode, int32_t toKeyCode) const override;
+
     int32_t getKeyCodeForKeyLocation(int32_t deviceId, int32_t locationKeyCode) const override;
 
     void toggleCapsLockState(int32_t deviceId) override;