package org.libsdl.app;

import javax.microedition.khronos.egl.EGL10;

import javax.microedition.khronos.egl.EGLConfig;

import javax.microedition.khronos.egl.EGLContext;

import javax.microedition.khronos.opengles.GL10;

import javax.microedition.khronos.egl.*;

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.text.method.*;

import android.text.*;

import android.media.*;

import android.hardware.*;

import android.content.*;

import java.lang.*;

/**

SDL Activity

*/

public class SDLActivity extends Activity {

// Keep track of the paused state

public static boolean mIsPaused;

// Main components

private static SDLActivity mSingleton;

private static SDLSurface mSurface;

private static View mTextEdit;

private static ViewGroup mLayout;

// This is what SDL runs in. It invokes SDL_main(), eventually

private static Thread mSDLThread;

// Audio

private static Thread mAudioThread;

private static AudioTrack mAudioTrack;

// EGL private objects

private static EGLContext mEGLContext;

private static EGLSurface mEGLSurface;

private static EGLDisplay mEGLDisplay;

private static EGLConfig mEGLConfig;

private static int mGLMajor, mGLMinor;

// Load the .so

static {

System.loadLibrary("SDL2");

//System.loadLibrary("SDL2_image");

//System.loadLibrary("SDL2_mixer");

//System.loadLibrary("SDL2_ttf");

System.loadLibrary("main");

}

// Setup

protected void onCreate(Bundle savedInstanceState) {

//Log.v("SDL", "onCreate()");

super.onCreate(savedInstanceState);

// So we can call stuff from static callbacks

mSingleton = this;

// Keep track of the paused state

mIsPaused = false;

// Set up the surface

mSurface = new SDLSurface(getApplication());

mLayout = new AbsoluteLayout(this);

mLayout.addView(mSurface);

setContentView(mLayout);

SurfaceHolder holder = mSurface.getHolder();

}

// Events

/*protected void onPause() {

Log.v("SDL", "onPause()");

super.onPause();

// Don't call SDLActivity.nativePause(); here, it will be called by SDLSurface::surfaceDestroyed

}

protected void onResume() {

Log.v("SDL", "onResume()");

super.onResume();

// Don't call SDLActivity.nativeResume(); here, it will be called via SDLSurface::surfaceChanged->SDLActivity::startApp

}*/

protected void onDestroy() {

super.onDestroy();

Log.v("SDL", "onDestroy()");

// Send a quit message to the application

SDLActivity.nativeQuit();

// Now wait for the SDL thread to quit

if (mSDLThread != null) {

try {

mSDLThread.join();

} catch(Exception e) {

Log.v("SDL", "Problem stopping thread: " + e);

}

mSDLThread = null;

//Log.v("SDL", "Finished waiting for SDL thread");

}

}

// 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;

// Handler for the messages

Handler commandHandler = new Handler() {

@Override

public void handleMessage(Message msg) {

switch (msg.arg1) {

case COMMAND_CHANGE_TITLE:

setTitle((String)msg.obj);

break;

case COMMAND_TEXTEDIT_HIDE:

if (mTextEdit != null) {

mTextEdit.setVisibility(View.GONE);

InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);

imm.hideSoftInputFromWindow(mTextEdit.getWindowToken(), 0);

}

break;

}

}

};

// Send a message from the SDLMain thread

void sendCommand(int command, Object data) {

Message msg = commandHandler.obtainMessage();

msg.arg1 = command;

msg.obj = data;

commandHandler.sendMessage(msg);

}

// C functions we call

public static native void nativeInit();

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 void onNativeKeyDown(int keycode);

public static native void onNativeKeyUp(int keycode);

public static native void onNativeTouch(int touchDevId, int pointerFingerId,

int action, float x,

float y, float p);

public static native void nativeRunAudioThread();

// Java functions called from C

public static boolean createGLContext(int majorVersion, int minorVersion, int[] attribs) {

return initEGL(majorVersion, minorVersion, attribs);

}

public static void flipBuffers() {

flipEGL();

}

public static void setActivityTitle(String title) {

// Called from SDLMain() thread and can't directly affect the view

mSingleton.sendCommand(COMMAND_CHANGE_TITLE, title);

}

public static void sendMessage(int command, int param) {

mSingleton.sendCommand(command, Integer.valueOf(param));

}

public static Context getContext() {

return mSingleton;

}

public static void startApp() {

// Start up the C app thread

if (mSDLThread == null) {

mSDLThread = new Thread(new SDLMain(), "SDLThread");

mSDLThread.start();

}

else {

/*

* Some Android variants may send multiple surfaceChanged events, so we don't need to resume every time

* every time we get one of those events, only if it comes after surfaceDestroyed

*/

if (mIsPaused) {

SDLActivity.nativeResume();

SDLActivity.mIsPaused = false;

}

}

}

static class ShowTextInputHandler 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 ShowTextInputHandler(int x, int y, int w, int h) {

this.x = x;

this.y = y;

this.w = w;

this.h = h;

}

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 void showTextInput(int x, int y, int w, int h) {

// Transfer the task to the main thread as a Runnable

mSingleton.commandHandler.post(new ShowTextInputHandler(x, y, w, h));

}

// EGL functions

try {

if (SDLActivity.mEGLDisplay == null) {

Log.v("SDL", "Starting up OpenGL ES " + majorVersion + "." + minorVersion);

EGL10 egl = (EGL10)EGLContext.getEGL();

EGLDisplay dpy = egl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);

int[] version = new int[2];

egl.eglInitialize(dpy, version);

EGLConfig[] configs = new EGLConfig[1];

int[] num_config = new int[1];

Log.e("SDL", "No EGL config available");

return false;

}

EGLConfig config = configs[0];

SDLActivity.mEGLDisplay = dpy;

SDLActivity.mEGLConfig = config;

SDLActivity.mGLMajor = majorVersion;

SDLActivity.mGLMinor = minorVersion;

}

return SDLActivity.createEGLSurface();

} catch(Exception e) {

Log.v("SDL", e + "");

for (StackTraceElement s : e.getStackTrace()) {

Log.v("SDL", s.toString());

}

return false;

}

}

public static boolean createEGLContext() {

EGL10 egl = (EGL10)EGLContext.getEGL();

int EGL_CONTEXT_CLIENT_VERSION=0x3098;

int contextAttrs[] = new int[] { EGL_CONTEXT_CLIENT_VERSION, SDLActivity.mGLMajor, EGL10.EGL_NONE };

SDLActivity.mEGLContext = egl.eglCreateContext(SDLActivity.mEGLDisplay, SDLActivity.mEGLConfig, EGL10.EGL_NO_CONTEXT, contextAttrs);

if (SDLActivity.mEGLContext == EGL10.EGL_NO_CONTEXT) {

Log.e("SDL", "Couldn't create context");

return false;

}

return true;

}

public static boolean createEGLSurface() {

if (SDLActivity.mEGLDisplay != null && SDLActivity.mEGLConfig != null) {

EGL10 egl = (EGL10)EGLContext.getEGL();

if (SDLActivity.mEGLContext == null) createEGLContext();

Log.v("SDL", "Creating new EGL Surface");

EGLSurface surface = egl.eglCreateWindowSurface(SDLActivity.mEGLDisplay, SDLActivity.mEGLConfig, SDLActivity.mSurface, null);

if (surface == EGL10.EGL_NO_SURFACE) {

Log.e("SDL", "Couldn't create surface");

return false;

}

if (egl.eglGetCurrentContext() != SDLActivity.mEGLContext) {

if (!egl.eglMakeCurrent(SDLActivity.mEGLDisplay, surface, surface, SDLActivity.mEGLContext)) {

Log.e("SDL", "Old EGL Context doesnt work, trying with a new one");

// TODO: Notify the user via a message that the old context could not be restored, and that textures need to be manually restored.

createEGLContext();

if (!egl.eglMakeCurrent(SDLActivity.mEGLDisplay, surface, surface, SDLActivity.mEGLContext)) {

Log.e("SDL", "Failed making EGL Context current");

return false;

}

}

}

SDLActivity.mEGLSurface = surface;

return true;

} else {

Log.e("SDL", "Surface creation failed, display = " + SDLActivity.mEGLDisplay + ", config = " + SDLActivity.mEGLConfig);

return false;

}

}

// EGL buffer flip

public static void flipEGL() {

try {

EGL10 egl = (EGL10)EGLContext.getEGL();

egl.eglWaitNative(EGL10.EGL_CORE_NATIVE_ENGINE, null);

// drawing here

egl.eglWaitGL();

egl.eglSwapBuffers(SDLActivity.mEGLDisplay, SDLActivity.mEGLSurface);

} catch(Exception e) {

Log.v("SDL", "flipEGL(): " + e);

for (StackTraceElement s : e.getStackTrace()) {

Log.v("SDL", s.toString());

}

}

}

// Audio

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") + " " + ((float)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);

mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate,

channelConfig, audioFormat, desiredFrames * frameSize, AudioTrack.MODE_STREAM);

audioStartThread();

Log.v("SDL", "SDL audio: got " + ((mAudioTrack.getChannelCount() >= 2) ? "stereo" : "mono") + " " + ((mAudioTrack.getAudioFormat() == AudioFormat.ENCODING_PCM_16BIT) ? "16-bit" : "8-bit") + " " + ((float)mAudioTrack.getSampleRate() / 1000f) + "kHz, " + desiredFrames + " frames buffer");

}

public static void audioStartThread() {

mAudioThread = new Thread(new Runnable() {

public void run() {

mAudioTrack.play();

nativeRunAudioThread();

}

});

// I'd take REALTIME if I could get it!

mAudioThread.setPriority(Thread.MAX_PRIORITY);

mAudioThread.start();

}

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(short)");

return;

}

}

}

public static void audioQuit() {

if (mAudioThread != null) {

try {

mAudioThread.join();

} catch(Exception e) {

Log.v("SDL", "Problem stopping audio thread: " + e);

}

mAudioThread = null;

//Log.v("SDL", "Finished waiting for audio thread");

}

if (mAudioTrack != null) {

mAudioTrack.stop();

mAudioTrack = null;

}

}

}

/**

Simple nativeInit() runnable

*/

class SDLMain implements Runnable {

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

private static SensorManager mSensorManager;

// Keep track of the surface size to normalize touch events

private static float mWidth, mHeight;

// Startup

public SDLSurface(Context context) {

super(context);

getHolder().addCallback(this);

setFocusable(true);

setFocusableInTouchMode(true);

requestFocus();

setOnKeyListener(this);

mSensorManager = (SensorManager)context.getSystemService("sensor");

// Some arbitrary defaults to avoid a potential division by zero

mWidth = 1.0f;

mHeight = 1.0f;

}

// Called when we have a valid drawing surface

public void surfaceCreated(SurfaceHolder holder) {

Log.v("SDL", "surfaceCreated()");

holder.setType(SurfaceHolder.SURFACE_TYPE_GPU);

enableSensor(Sensor.TYPE_ACCELEROMETER, true);

}

// Called when we lose the surface

public void surfaceDestroyed(SurfaceHolder holder) {

Log.v("SDL", "surfaceDestroyed()");

if (!SDLActivity.mIsPaused) {

SDLActivity.mIsPaused = true;

SDLActivity.nativePause();

}

enableSensor(Sensor.TYPE_ACCELEROMETER, false);

}

// Called when the surface is resized

public void surfaceChanged(SurfaceHolder holder,

int format, int width, int height) {

Log.v("SDL", "surfaceChanged()");

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");

break;

case PixelFormat.RGBA_5551:

Log.v("SDL", "pixel format RGBA_5551");

break;

case PixelFormat.RGBA_8888:

Log.v("SDL", "pixel format RGBA_8888");

break;

case PixelFormat.RGBX_8888:

Log.v("SDL", "pixel format RGBX_8888");

break;

case PixelFormat.RGB_332:

Log.v("SDL", "pixel format RGB_332");

break;

case PixelFormat.RGB_565:

Log.v("SDL", "pixel format RGB_565");

break;

case PixelFormat.RGB_888:

Log.v("SDL", "pixel format RGB_888");

// Not sure this is right, maybe SDL_PIXELFORMAT_RGB24 instead?

break;

default:

Log.v("SDL", "pixel format unknown " + format);

break;

}

mWidth = (float) width;

mHeight = (float) height;

SDLActivity.onNativeResize(width, height, sdlFormat);

Log.v("SDL", "Window size:" + width + "x"+height);

SDLActivity.startApp();

}

// unused

public void onDraw(Canvas canvas) {}

// Key events

public boolean onKey(View v, int keyCode, KeyEvent event) {

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

public boolean onTouch(View v, MotionEvent event) {

{

final int touchDevId = event.getDeviceId();

final int pointerCount = event.getPointerCount();

// touchId, pointerId, action, x, y, pressure

int actionPointerIndex = (event.getAction() & MotionEvent.ACTION_POINTER_ID_MASK) >> MotionEvent. ACTION_POINTER_ID_SHIFT; /* API 8: event.getActionIndex(); */

int pointerFingerId = event.getPointerId(actionPointerIndex);

int action = (event.getAction() & MotionEvent.ACTION_MASK); /* API 8: event.getActionMasked(); */

float x = event.getX(actionPointerIndex) / mWidth;

float y = event.getY(actionPointerIndex) / mHeight;

float p = event.getPressure(actionPointerIndex);

if (action == MotionEvent.ACTION_MOVE && pointerCount > 1) {

// TODO send motion to every pointer if its position has

// changed since prev event.

for (int 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);

}

} else {

SDLActivity.onNativeTouch(touchDevId, pointerFingerId, action, x, y, p);

}

}

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));

}

}

public void onAccuracyChanged(Sensor sensor, int accuracy) {

// TODO

}

public void onSensorChanged(SensorEvent event) {

if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {

SDLActivity.onNativeAccel(event.values[0] / SensorManager.GRAVITY_EARTH,

event.values[1] / SensorManager.GRAVITY_EARTH,

event.values[2] / SensorManager.GRAVITY_EARTH);

}

}

}

/* 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;

}

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 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);

}