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MIT License
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package org.libsdl.app; /*from w w w .j av a 2 s .com*/ import java.util.ArrayList; import java.util.Arrays; import android.app.*; import android.content.*; import android.view.*; import android.view.inputmethod.BaseInputConnection; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputConnection; import android.view.inputmethod.InputMethodManager; import android.widget.AbsoluteLayout; import android.os.*; import android.util.Log; import android.graphics.*; import android.media.*; import android.hardware.*; /** SDL Activity */ public class SDLActivity extends Activity { private static final String TAG = "SDL"; // Keep track of the paused state public static boolean mIsPaused = false, mIsSurfaceReady = false, mHasFocus = true; public static boolean mExitCalledFromJava; // Main components protected static SDLActivity mSingleton; protected static SDLSurface mSurface; protected static View mTextEdit; protected static ViewGroup mLayout; protected static SDLJoystickHandler mJoystickHandler; // This is what SDL runs in. It invokes SDL_main(), eventually protected static Thread mSDLThread; // Audio protected static Thread mAudioThread; protected static AudioTrack mAudioTrack; // Load the .so static { System.loadLibrary("SDL2"); //System.loadLibrary("SDL2_image"); //System.loadLibrary("SDL2_mixer"); //System.loadLibrary("SDL2_net"); //System.loadLibrary("SDL2_ttf"); System.loadLibrary("main"); } // Setup @Override protected void onCreate(Bundle savedInstanceState) { //Log.v("SDL", "onCreate()"); super.onCreate(savedInstanceState); // So we can call stuff from static callbacks mSingleton = this; // Set up the surface mSurface = new SDLSurface(getApplication()); // Make sure this variable is initialized here! mExitCalledFromJava = false; if(Build.VERSION.SDK_INT >= 12) { mJoystickHandler = new SDLJoystickHandler_API12(); } else { mJoystickHandler = new SDLJoystickHandler(); } mLayout = new AbsoluteLayout(this); mLayout.addView(mSurface); setContentView(mLayout); } // Events @Override protected void onPause() { Log.v("SDL", "onPause()"); super.onPause(); SDLActivity.handlePause(); } @Override protected void onResume() { Log.v("SDL", "onResume()"); super.onResume(); SDLActivity.handleResume(); } @Override public void onWindowFocusChanged(boolean hasFocus) { super.onWindowFocusChanged(hasFocus); Log.v("SDL", "onWindowFocusChanged(): " + hasFocus); SDLActivity.mHasFocus = hasFocus; if (hasFocus) { SDLActivity.handleResume(); } } @Override public void onLowMemory() { Log.v("SDL", "onLowMemory()"); super.onLowMemory(); SDLActivity.nativeLowMemory(); } @Override protected void onDestroy() { super.onDestroy(); Log.v("SDL", "onDestroy()"); // Send a quit message to the application SDLActivity.mExitCalledFromJava = true; SDLActivity.nativeQuit(); // Now wait for the SDL thread to quit if (SDLActivity.mSDLThread != null) { try { SDLActivity.mSDLThread.join(); } catch(Exception e) { Log.v("SDL", "Problem stopping thread: " + e); } SDLActivity.mSDLThread = null; //Log.v("SDL", "Finished waiting for SDL thread"); } } @Override public boolean dispatchKeyEvent(KeyEvent event) { int keyCode = event.getKeyCode(); // Ignore certain special keys so they're handled by Android if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN || keyCode == KeyEvent.KEYCODE_VOLUME_UP || keyCode == KeyEvent.KEYCODE_CAMERA || keyCode == 168 || /* API 11: KeyEvent.KEYCODE_ZOOM_IN */ keyCode == 169 /* API 11: KeyEvent.KEYCODE_ZOOM_OUT */ ) { return false; } return super.dispatchKeyEvent(event); } /** Called by onPause or surfaceDestroyed. Even if surfaceDestroyed * is the first to be called, mIsSurfaceReady should still be set * to 'true' during the call to onPause (in a usual scenario). */ public static void handlePause() { if (!SDLActivity.mIsPaused && SDLActivity.mIsSurfaceReady) { SDLActivity.mIsPaused = true; SDLActivity.nativePause(); mSurface.enableSensor(Sensor.TYPE_ACCELEROMETER, false); } } /** Called by onResume or surfaceCreated. An actual resume should be done only when the surface is ready. * Note: Some Android variants may send multiple surfaceChanged events, so we don't need to resume * every time we get one of those events, only if it comes after surfaceDestroyed */ public static void handleResume() { if (SDLActivity.mIsPaused && SDLActivity.mIsSurfaceReady && SDLActivity.mHasFocus) { SDLActivity.mIsPaused = false; SDLActivity.nativeResume(); mSurface.enableSensor(Sensor.TYPE_ACCELEROMETER, true); } } /* The native thread has finished */ public static void handleNativeExit() { SDLActivity.mSDLThread = null; mSingleton.finish(); } // Messages from the SDLMain thread static final int COMMAND_CHANGE_TITLE = 1; static final int COMMAND_UNUSED = 2; static final int COMMAND_TEXTEDIT_HIDE = 3; protected static final int COMMAND_USER = 0x8000; /** * This method is called by SDL if SDL did not handle a message itself. * This happens if a received message contains an unsupported command. * Method can be overwritten to handle Messages in a different class. * @param command the command of the message. * @param param the parameter of the message. May be null. * @return if the message was handled in overridden method. */ protected boolean onUnhandledMessage(int command, Object param) { return false; } /** * A Handler class for Messages from native SDL applications. * It uses current Activities as target (e.g. for the title). * static to prevent implicit references to enclosing object. */ protected static class SDLCommandHandler extends Handler { @Override public void handleMessage(Message msg) { Context context = getContext(); if (context == null) { Log.e(TAG, "error handling message, getContext() returned null"); return; } switch (msg.arg1) { case COMMAND_CHANGE_TITLE: if (context instanceof Activity) { ((Activity) context).setTitle((String)msg.obj); } else { Log.e(TAG, "error handling message, getContext() returned no Activity"); } break; case COMMAND_TEXTEDIT_HIDE: if (mTextEdit != null) { mTextEdit.setVisibility(View.GONE); InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(mTextEdit.getWindowToken(), 0); } break; default: if ((context instanceof SDLActivity) && !((SDLActivity) context).onUnhandledMessage(msg.arg1, msg.obj)) { Log.e(TAG, "error handling message, command is " + msg.arg1); } } } } // Handler for the messages Handler commandHandler = new SDLCommandHandler(); // Send a message from the SDLMain thread boolean sendCommand(int command, Object data) { Message msg = commandHandler.obtainMessage(); msg.arg1 = command; msg.obj = data; return commandHandler.sendMessage(msg); } // C functions we call public static native void nativeInit(); public static native void nativeLowMemory(); public static native void nativeQuit(); public static native void nativePause(); public static native void nativeResume(); public static native void onNativeResize(int x, int y, int format); public static native int onNativePadDown(int device_id, int keycode); public static native int onNativePadUp(int device_id, int keycode); public static native void onNativeJoy(int device_id, int axis, float value); public static native void onNativeKeyDown(int keycode); public static native void onNativeKeyUp(int keycode); public static native void onNativeKeyboardFocusLost(); public static native void onNativeTouch(int touchDevId, int pointerFingerId, int action, float x, float y, float p); public static native void onNativeAccel(float x, float y, float z); public static native void onNativeSurfaceChanged(); public static native void onNativeSurfaceDestroyed(); public static native void nativeFlipBuffers(); public static native int nativeAddJoystick(int device_id, String name, int is_accelerometer, int nbuttons, int naxes, int nhats, int nballs); public static native int nativeRemoveJoystick(int device_id); public static void flipBuffers() { SDLActivity.nativeFlipBuffers(); } public static boolean setActivityTitle(String title) { // Called from SDLMain() thread and can't directly affect the view return mSingleton.sendCommand(COMMAND_CHANGE_TITLE, title); } public static boolean sendMessage(int command, int param) { return mSingleton.sendCommand(command, Integer.valueOf(param)); } public static Context getContext() { return mSingleton; } /** * @return result of getSystemService(name) but executed on UI thread. */ public Object getSystemServiceFromUiThread(final String name) { final Object lock = new Object(); final Object[] results = new Object[2]; // array for writable variables synchronized (lock) { runOnUiThread(new Runnable() { @Override public void run() { synchronized (lock) { results[0] = getSystemService(name); results[1] = Boolean.TRUE; lock.notify(); } } }); if (results[1] == null) { try { lock.wait(); } catch (InterruptedException ex) { ex.printStackTrace(); } } } return results[0]; } static class ShowTextInputTask implements Runnable { /* * This is used to regulate the pan&scan method to have some offset from * the bottom edge of the input region and the top edge of an input * method (soft keyboard) */ static final int HEIGHT_PADDING = 15; public int x, y, w, h; public ShowTextInputTask(int x, int y, int w, int h) { this.x = x; this.y = y; this.w = w; this.h = h; } @Override public void run() { AbsoluteLayout.LayoutParams params = new AbsoluteLayout.LayoutParams( w, h + HEIGHT_PADDING, x, y); if (mTextEdit == null) { mTextEdit = new DummyEdit(getContext()); mLayout.addView(mTextEdit, params); } else { mTextEdit.setLayoutParams(params); } mTextEdit.setVisibility(View.VISIBLE); mTextEdit.requestFocus(); InputMethodManager imm = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE); imm.showSoftInput(mTextEdit, 0); } } public static boolean showTextInput(int x, int y, int w, int h) { // Transfer the task to the main thread as a Runnable return mSingleton.commandHandler.post(new ShowTextInputTask(x, y, w, h)); } public static Surface getNativeSurface() { return SDLActivity.mSurface.getNativeSurface(); } // Audio public static int audioInit(int sampleRate, boolean is16Bit, boolean isStereo, int desiredFrames) { int channelConfig = isStereo ? AudioFormat.CHANNEL_CONFIGURATION_STEREO : AudioFormat.CHANNEL_CONFIGURATION_MONO; int audioFormat = is16Bit ? AudioFormat.ENCODING_PCM_16BIT : AudioFormat.ENCODING_PCM_8BIT; int frameSize = (isStereo ? 2 : 1) * (is16Bit ? 2 : 1); Log.v("SDL", "SDL audio: wanted " + (isStereo ? "stereo" : "mono") + " " + (is16Bit ? "16-bit" : "8-bit") + " " + (sampleRate / 1000f) + "kHz, " + desiredFrames + " frames buffer"); // Let the user pick a larger buffer if they really want -- but ye // gods they probably shouldn't, the minimums are horrifyingly high // latency already desiredFrames = Math.max(desiredFrames, (AudioTrack.getMinBufferSize(sampleRate, channelConfig, audioFormat) + frameSize - 1) / frameSize); if (mAudioTrack == null) { mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate, channelConfig, audioFormat, desiredFrames * frameSize, AudioTrack.MODE_STREAM); // Instantiating AudioTrack can "succeed" without an exception and the track may still be invalid // Ref: https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/media/java/android/media/AudioTrack.java // Ref: http://developer.android.com/reference/android/media/AudioTrack.html#getState() if (mAudioTrack.getState() != AudioTrack.STATE_INITIALIZED) { Log.e("SDL", "Failed during initialization of Audio Track"); mAudioTrack = null; return -1; } mAudioTrack.play(); } Log.v("SDL", "SDL audio: got " + ((mAudioTrack.getChannelCount() >= 2) ? "stereo" : "mono") + " " + ((mAudioTrack.getAudioFormat() == AudioFormat.ENCODING_PCM_16BIT) ? "16-bit" : "8-bit") + " " + (mAudioTrack.getSampleRate() / 1000f) + "kHz, " + desiredFrames + " frames buffer"); return 0; } public static void audioWriteShortBuffer(short[] buffer) { for (int i = 0; i < buffer.length; ) { int result = mAudioTrack.write(buffer, i, buffer.length - i); if (result > 0) { i += result; } else if (result == 0) { try { Thread.sleep(1); } catch(InterruptedException e) { // Nom nom } } else { Log.w("SDL", "SDL audio: error return from write(short)"); return; } } } public static void audioWriteByteBuffer(byte[] buffer) { for (int i = 0; i < buffer.length; ) { int result = mAudioTrack.write(buffer, i, buffer.length - i); if (result > 0) { i += result; } else if (result == 0) { try { Thread.sleep(1); } catch(InterruptedException e) { // Nom nom } } else { Log.w("SDL", "SDL audio: error return from write(byte)"); return; } } } public static void audioQuit() { if (mAudioTrack != null) { mAudioTrack.stop(); mAudioTrack = null; } } // Input /** * @return an array which may be empty but is never null. */ public static int[] inputGetInputDeviceIds(int sources) { int[] ids = InputDevice.getDeviceIds(); int[] filtered = new int[ids.length]; int used = 0; for (int i = 0; i < ids.length; ++i) { InputDevice device = InputDevice.getDevice(ids[i]); if ((device != null) && ((device.getSources() & sources) != 0)) { filtered[used++] = device.getId(); } } return Arrays.copyOf(filtered, used); } // Joystick glue code, just a series of stubs that redirect to the SDLJoystickHandler instance public static boolean handleJoystickMotionEvent(MotionEvent event) { return mJoystickHandler.handleMotionEvent(event); } public static void pollInputDevices() { if (SDLActivity.mSDLThread != null) { mJoystickHandler.pollInputDevices(); } } } /** Simple nativeInit() runnable */ class SDLMain implements Runnable { @Override public void run() { // Runs SDL_main() SDLActivity.nativeInit(); //Log.v("SDL", "SDL thread terminated"); } } /** SDLSurface. This is what we draw on, so we need to know when it's created in order to do anything useful. Because of this, that's where we set up the SDL thread */ class SDLSurface extends SurfaceView implements SurfaceHolder.Callback, View.OnKeyListener, View.OnTouchListener, SensorEventListener { // Sensors protected static SensorManager mSensorManager; protected static Display mDisplay; // Keep track of the surface size to normalize touch events protected static float mWidth, mHeight; // Startup public SDLSurface(Context context) { super(context); getHolder().addCallback(this); setFocusable(true); setFocusableInTouchMode(true); requestFocus(); setOnKeyListener(this); setOnTouchListener(this); mDisplay = ((WindowManager)context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); mSensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE); if(Build.VERSION.SDK_INT >= 12) { setOnGenericMotionListener(new SDLGenericMotionListener_API12()); } // Some arbitrary defaults to avoid a potential division by zero mWidth = 1.0f; mHeight = 1.0f; } public Surface getNativeSurface() { return getHolder().getSurface(); } // Called when we have a valid drawing surface @Override public void surfaceCreated(SurfaceHolder holder) { Log.v("SDL", "surfaceCreated()"); holder.setType(SurfaceHolder.SURFACE_TYPE_GPU); } // Called when we lose the surface @Override public void surfaceDestroyed(SurfaceHolder holder) { Log.v("SDL", "surfaceDestroyed()"); // Call this *before* setting mIsSurfaceReady to 'false' SDLActivity.handlePause(); SDLActivity.mIsSurfaceReady = false; SDLActivity.onNativeSurfaceDestroyed(); } // Called when the surface is resized @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { Log.v("SDL", "surfaceChanged()"); int sdlFormat = 0x15151002; // SDL_PIXELFORMAT_RGB565 by default switch (format) { case PixelFormat.A_8: Log.v("SDL", "pixel format A_8"); break; case PixelFormat.LA_88: Log.v("SDL", "pixel format LA_88"); break; case PixelFormat.L_8: Log.v("SDL", "pixel format L_8"); break; case PixelFormat.RGBA_4444: Log.v("SDL", "pixel format RGBA_4444"); sdlFormat = 0x15421002; // SDL_PIXELFORMAT_RGBA4444 break; case PixelFormat.RGBA_5551: Log.v("SDL", "pixel format RGBA_5551"); sdlFormat = 0x15441002; // SDL_PIXELFORMAT_RGBA5551 break; case PixelFormat.RGBA_8888: Log.v("SDL", "pixel format RGBA_8888"); sdlFormat = 0x16462004; // SDL_PIXELFORMAT_RGBA8888 break; case PixelFormat.RGBX_8888: Log.v("SDL", "pixel format RGBX_8888"); sdlFormat = 0x16261804; // SDL_PIXELFORMAT_RGBX8888 break; case PixelFormat.RGB_332: Log.v("SDL", "pixel format RGB_332"); sdlFormat = 0x14110801; // SDL_PIXELFORMAT_RGB332 break; case PixelFormat.RGB_565: Log.v("SDL", "pixel format RGB_565"); sdlFormat = 0x15151002; // SDL_PIXELFORMAT_RGB565 break; case PixelFormat.RGB_888: Log.v("SDL", "pixel format RGB_888"); // Not sure this is right, maybe SDL_PIXELFORMAT_RGB24 instead? sdlFormat = 0x16161804; // SDL_PIXELFORMAT_RGB888 break; default: Log.v("SDL", "pixel format unknown " + format); break; } mWidth = width; mHeight = height; SDLActivity.onNativeResize(width, height, sdlFormat); Log.v("SDL", "Window size:" + width + "x"+height); // Set mIsSurfaceReady to 'true' *before* making a call to handleResume SDLActivity.mIsSurfaceReady = true; SDLActivity.onNativeSurfaceChanged(); if (SDLActivity.mSDLThread == null) { // This is the entry point to the C app. // Start up the C app thread and enable sensor input for the first time SDLActivity.mSDLThread = new Thread(new SDLMain(), "SDLThread"); enableSensor(Sensor.TYPE_ACCELEROMETER, true); SDLActivity.mSDLThread.start(); // Set up a listener thread to catch when the native thread ends new Thread(new Runnable(){ public void run(){ try { SDLActivity.mSDLThread.join(); } catch(Exception e){} finally{ // Native thread has finished if (! SDLActivity.mExitCalledFromJava) { SDLActivity.handleNativeExit(); } } } }).start(); } } // unused @Override public void onDraw(Canvas canvas) {} // Key events @Override public boolean onKey(View v, int keyCode, KeyEvent event) { // Dispatch the different events depending on where they come from // Some SOURCE_DPAD or SOURCE_GAMEPAD are also SOURCE_KEYBOARD // So, we try to process them as DPAD or GAMEPAD events first, if that fails we try them as KEYBOARD if ( (event.getSource() & 0x00000401) != 0 || /* API 12: SOURCE_GAMEPAD */ (event.getSource() & InputDevice.SOURCE_DPAD) != 0 ) { if (event.getAction() == KeyEvent.ACTION_DOWN) { if (SDLActivity.onNativePadDown(event.getDeviceId(), keyCode) == 0) { return true; } } else if (event.getAction() == KeyEvent.ACTION_UP) { if (SDLActivity.onNativePadUp(event.getDeviceId(), keyCode) == 0) { return true; } } } if( (event.getSource() & InputDevice.SOURCE_KEYBOARD) != 0) { if (event.getAction() == KeyEvent.ACTION_DOWN) { //Log.v("SDL", "key down: " + keyCode); SDLActivity.onNativeKeyDown(keyCode); return true; } else if (event.getAction() == KeyEvent.ACTION_UP) { //Log.v("SDL", "key up: " + keyCode); SDLActivity.onNativeKeyUp(keyCode); return true; } } return false; } // Touch events @Override public boolean onTouch(View v, MotionEvent event) { /* Ref: http://developer.android.com/training/gestures/multi.html */ final int touchDevId = event.getDeviceId(); final int pointerCount = event.getPointerCount(); int action = event.getActionMasked(); int pointerFingerId; int i = -1; float x,y,p; switch(action) { case MotionEvent.ACTION_MOVE: for (i = 0; i < pointerCount; i++) { pointerFingerId = event.getPointerId(i); x = event.getX(i) / mWidth; y = event.getY(i) / mHeight; p = event.getPressure(i); SDLActivity.onNativeTouch(touchDevId, pointerFingerId, action, x, y, p); } break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_DOWN: // Primary pointer up/down, the index is always zero i = 0; case MotionEvent.ACTION_POINTER_UP: case MotionEvent.ACTION_POINTER_DOWN: // Non primary pointer up/down if (i == -1) { i = event.getActionIndex(); } pointerFingerId = event.getPointerId(i); x = event.getX(i) / mWidth; y = event.getY(i) / mHeight; p = event.getPressure(i); SDLActivity.onNativeTouch(touchDevId, pointerFingerId, action, x, y, p); break; default: break; } return true; } // Sensor events public void enableSensor(int sensortype, boolean enabled) { // TODO: This uses getDefaultSensor - what if we have >1 accels? if (enabled) { mSensorManager.registerListener(this, mSensorManager.getDefaultSensor(sensortype), SensorManager.SENSOR_DELAY_GAME, null); } else { mSensorManager.unregisterListener(this, mSensorManager.getDefaultSensor(sensortype)); } } @Override public void onAccuracyChanged(Sensor sensor, int accuracy) { // TODO } @Override public void onSensorChanged(SensorEvent event) { if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) { float x, y; switch (mDisplay.getRotation()) { case Surface.ROTATION_90: x = -event.values[1]; y = event.values[0]; break; case Surface.ROTATION_270: x = event.values[1]; y = -event.values[0]; break; case Surface.ROTATION_180: x = -event.values[1]; y = -event.values[0]; break; default: x = event.values[0]; y = event.values[1]; break; } SDLActivity.onNativeAccel(-x / SensorManager.GRAVITY_EARTH, y / SensorManager.GRAVITY_EARTH, event.values[2] / SensorManager.GRAVITY_EARTH - 1); } } } /* This is a fake invisible editor view that receives the input and defines the * pan&scan region */ class DummyEdit extends View implements View.OnKeyListener { InputConnection ic; public DummyEdit(Context context) { super(context); setFocusableInTouchMode(true); setFocusable(true); setOnKeyListener(this); } @Override public boolean onCheckIsTextEditor() { return true; } @Override public boolean onKey(View v, int keyCode, KeyEvent event) { // This handles the hardware keyboard input if (event.isPrintingKey()) { if (event.getAction() == KeyEvent.ACTION_DOWN) { ic.commitText(String.valueOf((char) event.getUnicodeChar()), 1); } return true; } if (event.getAction() == KeyEvent.ACTION_DOWN) { SDLActivity.onNativeKeyDown(keyCode); return true; } else if (event.getAction() == KeyEvent.ACTION_UP) { SDLActivity.onNativeKeyUp(keyCode); return true; } return false; } // @Override public boolean onKeyPreIme (int keyCode, KeyEvent event) { // As seen on StackOverflow: http://stackoverflow.com/questions/7634346/keyboard-hide-event // FIXME: Discussion at http://bugzilla.libsdl.org/show_bug.cgi?id=1639 // FIXME: This is not a 100% effective solution to the problem of detecting if the keyboard is showing or not // FIXME: A more effective solution would be to change our Layout from AbsoluteLayout to Relative or Linear // FIXME: And determine the keyboard presence doing this: http://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android // FIXME: An even more effective way would be if Android provided this out of the box, but where would the fun be in that :) if (event.getAction()==KeyEvent.ACTION_UP && keyCode == KeyEvent.KEYCODE_BACK) { if (SDLActivity.mTextEdit != null && SDLActivity.mTextEdit.getVisibility() == View.VISIBLE) { SDLActivity.onNativeKeyboardFocusLost(); } } return super.onKeyPreIme(keyCode, event); } @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) { ic = new SDLInputConnection(this, true); outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_EXTRACT_UI | 33554432 /* API 11: EditorInfo.IME_FLAG_NO_FULLSCREEN */; return ic; } } class SDLInputConnection extends BaseInputConnection { public SDLInputConnection(View targetView, boolean fullEditor) { super(targetView, fullEditor); } @Override public boolean sendKeyEvent(KeyEvent event) { /* * This handles the keycodes from soft keyboard (and IME-translated * input from hardkeyboard) */ int keyCode = event.getKeyCode(); if (event.getAction() == KeyEvent.ACTION_DOWN) { if (event.isPrintingKey()) { commitText(String.valueOf((char) event.getUnicodeChar()), 1); } SDLActivity.onNativeKeyDown(keyCode); return true; } else if (event.getAction() == KeyEvent.ACTION_UP) { SDLActivity.onNativeKeyUp(keyCode); return true; } return super.sendKeyEvent(event); } @Override public boolean commitText(CharSequence text, int newCursorPosition) { nativeCommitText(text.toString(), newCursorPosition); return super.commitText(text, newCursorPosition); } @Override public boolean setComposingText(CharSequence text, int newCursorPosition) { nativeSetComposingText(text.toString(), newCursorPosition); return super.setComposingText(text, newCursorPosition); } public native void nativeCommitText(String text, int newCursorPosition); public native void nativeSetComposingText(String text, int newCursorPosition); @Override public boolean deleteSurroundingText(int beforeLength, int afterLength) { // Workaround to capture backspace key. Ref: http://stackoverflow.com/questions/14560344/android-backspace-in-webview-baseinputconnection if (beforeLength == 1 && afterLength == 0) { // backspace return super.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL)) && super.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DEL)); } return super.deleteSurroundingText(beforeLength, afterLength); } } /* A null joystick handler for API level < 12 devices (the accelerometer is handled separately) */ class SDLJoystickHandler { public boolean handleMotionEvent(MotionEvent event) { return false; } public void pollInputDevices() { } } /* Actual joystick functionality available for API >= 12 devices */ class SDLJoystickHandler_API12 extends SDLJoystickHandler { class SDLJoystick { public int device_id; public String name; public ArrayList<InputDevice.MotionRange> axes; } private ArrayList<SDLJoystick> mJoysticks; public SDLJoystickHandler_API12() { mJoysticks = new ArrayList<SDLJoystick>(); } @Override public void pollInputDevices() { int[] deviceIds = InputDevice.getDeviceIds(); // It helps processing the device ids in reverse order // For example, in the case of the XBox 360 wireless dongle, // so the first controller seen by SDL matches what the receiver // considers to be the first controller for(int i=deviceIds.length-1; i>-1; i--) { SDLJoystick joystick = getJoystick(deviceIds[i]); if (joystick == null) { joystick = new SDLJoystick(); InputDevice joystickDevice = InputDevice.getDevice(deviceIds[i]); if( (joystickDevice.getSources() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { joystick.device_id = deviceIds[i]; joystick.name = joystickDevice.getName(); joystick.axes = new ArrayList<InputDevice.MotionRange>(); for (InputDevice.MotionRange range : joystickDevice.getMotionRanges()) { if ( (range.getSource() & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { joystick.axes.add(range); } } mJoysticks.add(joystick); SDLActivity.nativeAddJoystick(joystick.device_id, joystick.name, 0, -1, joystick.axes.size(), 0, 0); } } } /* Check removed devices */ ArrayList<Integer> removedDevices = new ArrayList<Integer>(); for(int i=0; i < mJoysticks.size(); i++) { int device_id = mJoysticks.get(i).device_id; int j; for (j=0; j < deviceIds.length; j++) { if (device_id == deviceIds[j]) break; } if (j == deviceIds.length) { removedDevices.add(device_id); } } for(int i=0; i < removedDevices.size(); i++) { int device_id = removedDevices.get(i); SDLActivity.nativeRemoveJoystick(device_id); for (int j=0; j < mJoysticks.size(); j++) { if (mJoysticks.get(j).device_id == device_id) { mJoysticks.remove(j); break; } } } } protected SDLJoystick getJoystick(int device_id) { for(int i=0; i < mJoysticks.size(); i++) { if (mJoysticks.get(i).device_id == device_id) { return mJoysticks.get(i); } } return null; } @Override public boolean handleMotionEvent(MotionEvent event) { if ( (event.getSource() & InputDevice.SOURCE_JOYSTICK) != 0) { int actionPointerIndex = event.getActionIndex(); int action = event.getActionMasked(); switch(action) { case MotionEvent.ACTION_MOVE: SDLJoystick joystick = getJoystick(event.getDeviceId()); if ( joystick != null ) { for (int i = 0; i < joystick.axes.size(); i++) { InputDevice.MotionRange range = joystick.axes.get(i); /* Normalize the value to -1...1 */ float value = ( event.getAxisValue( range.getAxis(), actionPointerIndex) - range.getMin() ) / range.getRange() * 2.0f - 1.0f; SDLActivity.onNativeJoy(joystick.device_id, i, value ); } } break; default: break; } } return true; } } class SDLGenericMotionListener_API12 implements View.OnGenericMotionListener { // Generic Motion (mouse hover, joystick...) events go here // We only have joysticks yet @Override public boolean onGenericMotion(View v, MotionEvent event) { return SDLActivity.handleJoystickMotionEvent(event); } }