support gamepad remapping on android

3 files changed, 458 insertions, 0 deletions

diff --git a/platform/android/java/src/org/godotengine/godot/input/InputManagerCompat.java b/platform/android/java/src/org/godotengine/godot/input/InputManagerCompat.java
new file mode 100644
index 0000000000..4615d2fbb5
--- /dev/null
+++ b/platform/android/java/src/org/godotengine/godot/input/InputManagerCompat.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.godotengine.godot.input;
+
+import android.content.Context;
+import android.os.Build;
+import android.os.Handler;
+import android.view.InputDevice;
+import android.view.MotionEvent;
+
+public interface InputManagerCompat {
+    /**
+     * Gets information about the input device with the specified id.
+     *
+     * @param id The device id
+     * @return The input device or null if not found
+     */
+    public InputDevice getInputDevice(int id);
+
+    /**
+     * Gets the ids of all input devices in the system.
+     *
+     * @return The input device ids.
+     */
+    public int[] getInputDeviceIds();
+
+    /**
+     * Registers an input device listener to receive notifications about when
+     * input devices are added, removed or changed.
+     *
+     * @param listener The listener to register.
+     * @param handler The handler on which the listener should be invoked, or
+     *            null if the listener should be invoked on the calling thread's
+     *            looper.
+     */
+    public void registerInputDeviceListener(InputManagerCompat.InputDeviceListener listener,
+            Handler handler);
+
+    /**
+     * Unregisters an input device listener.
+     *
+     * @param listener The listener to unregister.
+     */
+    public void unregisterInputDeviceListener(InputManagerCompat.InputDeviceListener listener);
+
+    /*
+     * The following three calls are to simulate V16 behavior on pre-Jellybean
+     * devices. If you don't call them, your callback will never be called
+     * pre-API 16.
+     */
+
+    /**
+     * Pass the motion events to the InputManagerCompat. This is used to
+     * optimize for polling for controllers. If you do not pass these events in,
+     * polling will cause regular object creation.
+     *
+     * @param event the motion event from the app
+     */
+    public void onGenericMotionEvent(MotionEvent event);
+
+    /**
+     * Tell the V9 input manager that it should stop polling for disconnected
+     * devices. You can call this during onPause in your activity, although you
+     * might want to call it whenever your game is not active (or whenever you
+     * don't care about being notified of new input devices)
+     */
+    public void onPause();
+
+    /**
+     * Tell the V9 input manager that it should start polling for disconnected
+     * devices. You can call this during onResume in your activity, although you
+     * might want to call it less often (only when the gameplay is actually
+     * active)
+     */
+    public void onResume();
+
+    public interface InputDeviceListener {
+        /**
+         * Called whenever the input manager detects that a device has been
+         * added. This will only be called in the V9 version when a motion event
+         * is detected.
+         *
+         * @param deviceId The id of the input device that was added.
+         */
+        void onInputDeviceAdded(int deviceId);
+
+        /**
+         * Called whenever the properties of an input device have changed since
+         * they were last queried. This will not be called for the V9 version of
+         * the API.
+         *
+         * @param deviceId The id of the input device that changed.
+         */
+        void onInputDeviceChanged(int deviceId);
+
+        /**
+         * Called whenever the input manager detects that a device has been
+         * removed. For the V9 version, this can take some time depending on the
+         * poll rate.
+         *
+         * @param deviceId The id of the input device that was removed.
+         */
+        void onInputDeviceRemoved(int deviceId);
+    }
+
+    /**
+     * Use this to construct a compatible InputManager.
+     */
+    public static class Factory {
+
+        /**
+         * Constructs and returns a compatible InputManger
+         *
+         * @param context the Context that will be used to get the system
+         *            service from
+         * @return a compatible implementation of InputManager
+         */
+        public static InputManagerCompat getInputManager(Context context) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+                return new InputManagerV16(context);
+            } else {
+                return new InputManagerV9();
+            }
+        }
+    }
+}
diff --git a/platform/android/java/src/org/godotengine/godot/input/InputManagerV16.java b/platform/android/java/src/org/godotengine/godot/input/InputManagerV16.java
new file mode 100644
index 0000000000..f05701f455
--- /dev/null
+++ b/platform/android/java/src/org/godotengine/godot/input/InputManagerV16.java
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.godotengine.godot.input;
+
+import android.annotation.TargetApi;
+import android.content.Context;
+import android.hardware.input.InputManager;
+import android.os.Build;
+import android.os.Handler;
+import android.view.InputDevice;
+import android.view.MotionEvent;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
+public class InputManagerV16 implements InputManagerCompat {
+
+    private final InputManager mInputManager;
+    private final Map<InputManagerCompat.InputDeviceListener, V16InputDeviceListener> mListeners;
+
+    public InputManagerV16(Context context) {
+        mInputManager = (InputManager) context.getSystemService(Context.INPUT_SERVICE);
+        mListeners = new HashMap<InputManagerCompat.InputDeviceListener, V16InputDeviceListener>();
+    }
+
+    @Override
+    public InputDevice getInputDevice(int id) {
+        return mInputManager.getInputDevice(id);
+    }
+
+    @Override
+    public int[] getInputDeviceIds() {
+        return mInputManager.getInputDeviceIds();
+    }
+
+    static class V16InputDeviceListener implements InputManager.InputDeviceListener {
+        final InputManagerCompat.InputDeviceListener mIDL;
+
+        public V16InputDeviceListener(InputDeviceListener idl) {
+            mIDL = idl;
+        }
+
+        @Override
+        public void onInputDeviceAdded(int deviceId) {
+            mIDL.onInputDeviceAdded(deviceId);
+        }
+
+        @Override
+        public void onInputDeviceChanged(int deviceId) {
+            mIDL.onInputDeviceChanged(deviceId);
+        }
+
+        @Override
+        public void onInputDeviceRemoved(int deviceId) {
+            mIDL.onInputDeviceRemoved(deviceId);
+        }
+
+    }
+
+    @Override
+    public void registerInputDeviceListener(InputDeviceListener listener, Handler handler) {
+        V16InputDeviceListener v16Listener = new V16InputDeviceListener(listener);
+        mInputManager.registerInputDeviceListener(v16Listener, handler);
+        mListeners.put(listener, v16Listener);
+    }
+
+    @Override
+    public void unregisterInputDeviceListener(InputDeviceListener listener) {
+        V16InputDeviceListener curListener = mListeners.remove(listener);
+        if (null != curListener)
+        {
+            mInputManager.unregisterInputDeviceListener(curListener);
+        }
+
+    }
+
+    @Override
+    public void onGenericMotionEvent(MotionEvent event) {
+        // unused in V16
+    }
+
+    @Override
+    public void onPause() {
+        // unused in V16
+    }
+
+    @Override
+    public void onResume() {
+        // unused in V16
+    }
+
+}
diff --git a/platform/android/java/src/org/godotengine/godot/input/InputManagerV9.java b/platform/android/java/src/org/godotengine/godot/input/InputManagerV9.java
new file mode 100644
index 0000000000..0334c00997
--- /dev/null
+++ b/platform/android/java/src/org/godotengine/godot/input/InputManagerV9.java
@@ -0,0 +1,211 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.godotengine.godot.input;
+
+import android.os.Handler;
+import android.os.Message;
+import android.os.SystemClock;
+import android.util.Log;
+import android.util.SparseArray;
+import android.view.InputDevice;
+import android.view.MotionEvent;
+
+import java.lang.ref.WeakReference;
+import java.util.ArrayDeque;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Queue;
+
+public class InputManagerV9 implements InputManagerCompat {
+    private static final String LOG_TAG = "InputManagerV9";
+    private static final int MESSAGE_TEST_FOR_DISCONNECT = 101;
+    private static final long CHECK_ELAPSED_TIME = 3000L;
+
+    private static final int ON_DEVICE_ADDED = 0;
+    private static final int ON_DEVICE_CHANGED = 1;
+    private static final int ON_DEVICE_REMOVED = 2;
+
+    private final SparseArray<long[]> mDevices;
+    private final Map<InputDeviceListener, Handler> mListeners;
+    private final Handler mDefaultHandler;
+
+    private static class PollingMessageHandler extends Handler {
+        private final WeakReference<InputManagerV9> mInputManager;
+
+        PollingMessageHandler(InputManagerV9 im) {
+            mInputManager = new WeakReference<InputManagerV9>(im);
+        }
+
+        @Override
+        public void handleMessage(Message msg) {
+            super.handleMessage(msg);
+            switch (msg.what) {
+                case MESSAGE_TEST_FOR_DISCONNECT:
+                    InputManagerV9 imv = mInputManager.get();
+                    if (null != imv) {
+                        long time = SystemClock.elapsedRealtime();
+                        int size = imv.mDevices.size();
+                        for (int i = 0; i < size; i++) {
+                            long[] lastContact = imv.mDevices.valueAt(i);
+                            if (null != lastContact) {
+                                if (time - lastContact[0] > CHECK_ELAPSED_TIME) {
+                                    // check to see if the device has been
+                                    // disconnected
+                                    int id = imv.mDevices.keyAt(i);
+                                    if (null == InputDevice.getDevice(id)) {
+                                        // disconnected!
+                                        imv.notifyListeners(ON_DEVICE_REMOVED, id);
+                                        imv.mDevices.remove(id);
+                                    } else {
+                                        lastContact[0] = time;
+                                    }
+                                }
+                            }
+                        }
+                        sendEmptyMessageDelayed(MESSAGE_TEST_FOR_DISCONNECT,
+                                CHECK_ELAPSED_TIME);
+                    }
+                    break;
+            }
+        }
+
+    }
+
+    public InputManagerV9() {
+        mDevices = new SparseArray<long[]>();
+        mListeners = new HashMap<InputDeviceListener, Handler>();
+        mDefaultHandler = new PollingMessageHandler(this);
+        // as a side-effect, populates our collection of watched
+        // input devices
+        getInputDeviceIds();
+    }
+
+    @Override
+    public InputDevice getInputDevice(int id) {
+        return InputDevice.getDevice(id);
+    }
+
+    @Override
+    public int[] getInputDeviceIds() {
+        // add any hitherto unknown devices to our
+        // collection of watched input devices
+        int[] activeDevices = InputDevice.getDeviceIds();
+        long time = SystemClock.elapsedRealtime();
+        for ( int id : activeDevices ) {
+            long[] lastContact = mDevices.get(id);
+            if ( null == lastContact ) {
+                // we have a new device
+                mDevices.put(id, new long[] { time });
+            }
+        }
+        return activeDevices;
+    }
+
+    @Override
+    public void registerInputDeviceListener(InputDeviceListener listener, Handler handler) {
+        mListeners.remove(listener);
+        if (handler == null) {
+            handler = mDefaultHandler;
+        }
+        mListeners.put(listener, handler);
+    }
+
+    @Override
+    public void unregisterInputDeviceListener(InputDeviceListener listener) {
+        mListeners.remove(listener);
+    }
+
+    private void notifyListeners(int why, int deviceId) {
+        // the state of some device has changed
+        if (!mListeners.isEmpty()) {
+            // yes... this will cause an object to get created... hopefully
+            // it won't happen very often
+            for (InputDeviceListener listener : mListeners.keySet()) {
+                Handler handler = mListeners.get(listener);
+                DeviceEvent odc = DeviceEvent.getDeviceEvent(why, deviceId, listener);
+                handler.post(odc);
+            }
+        }
+    }
+
+    private static class DeviceEvent implements Runnable {
+        private int mMessageType;
+        private int mId;
+        private InputDeviceListener mListener;
+        private static Queue<DeviceEvent> sEventQueue = new ArrayDeque<DeviceEvent>();
+
+        private DeviceEvent() {
+        }
+
+        static DeviceEvent getDeviceEvent(int messageType, int id,
+                InputDeviceListener listener) {
+            DeviceEvent curChanged = sEventQueue.poll();
+            if (null == curChanged) {
+                curChanged = new DeviceEvent();
+            }
+            curChanged.mMessageType = messageType;
+            curChanged.mId = id;
+            curChanged.mListener = listener;
+            return curChanged;
+        }
+
+        @Override
+        public void run() {
+            switch (mMessageType) {
+                case ON_DEVICE_ADDED:
+                    mListener.onInputDeviceAdded(mId);
+                    break;
+                case ON_DEVICE_CHANGED:
+                    mListener.onInputDeviceChanged(mId);
+                    break;
+                case ON_DEVICE_REMOVED:
+                    mListener.onInputDeviceRemoved(mId);
+                    break;
+                default:
+                    Log.e(LOG_TAG, "Unknown Message Type");
+                    break;
+            }
+            // dump this runnable back in the queue
+            sEventQueue.offer(this);
+        }
+    }
+
+    @Override
+    public void onGenericMotionEvent(MotionEvent event) {
+        // detect new devices
+        int id = event.getDeviceId();
+        long[] timeArray = mDevices.get(id);
+        if (null == timeArray) {
+            notifyListeners(ON_DEVICE_ADDED, id);
+            timeArray = new long[1];
+            mDevices.put(id, timeArray);
+        }
+        long time = SystemClock.elapsedRealtime();
+        timeArray[0] = time;
+    }
+
+    @Override
+    public void onPause() {
+        mDefaultHandler.removeMessages(MESSAGE_TEST_FOR_DISCONNECT);
+    }
+
+    @Override
+    public void onResume() {
+        mDefaultHandler.sendEmptyMessage(MESSAGE_TEST_FOR_DISCONNECT);
+    }
+
+}