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SDLActivity.java
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package org.libsdl.app;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.lang.reflect.Method;
import android.app.*;
import android.content.*;
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import android.content.res.Configuration;
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import android.text.InputType;
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import android.view.*;
import android.view.inputmethod.BaseInputConnection;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;
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import android.widget.RelativeLayout;
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import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.os.*;
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import android.util.DisplayMetrics;
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import android.util.Log;
import android.util.SparseArray;
import android.graphics.*;
import android.graphics.drawable.Drawable;
import android.hardware.*;
import android.content.pm.ActivityInfo;
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import android.content.pm.PackageManager;
import android.content.pm.ApplicationInfo;
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/**
SDL Activity
*/
public class SDLActivity extends Activity {
private static final String TAG = "SDL";
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public static boolean mIsResumedCalled, mIsSurfaceReady, mHasFocus;
// Handle the state of the native layer
public enum NativeState {
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INIT, RESUMED, PAUSED
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}
public static NativeState mNextNativeState;
public static NativeState mCurrentNativeState;
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public static boolean mExitCalledFromJava;
/** If shared libraries (e.g. SDL or the native application) could not be loaded. */
public static boolean mBrokenLibraries;
// If we want to separate mouse and touch events.
// This is only toggled in native code when a hint is set!
public static boolean mSeparateMouseAndTouch;
// Main components
protected static SDLActivity mSingleton;
protected static SDLSurface mSurface;
protected static View mTextEdit;
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protected static boolean mScreenKeyboardShown;
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protected static ViewGroup mLayout;
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protected static SDLClipboardHandler mClipboardHandler;
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// This is what SDL runs in. It invokes SDL_main(), eventually
protected static Thread mSDLThread;
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/**
* This method returns the name of the shared object with the application entry point
* It can be overridden by derived classes.
*/
protected String getMainSharedObject() {
String library;
String[] libraries = SDLActivity.mSingleton.getLibraries();
if (libraries.length > 0) {
library = "lib" + libraries[libraries.length - 1] + ".so";
} else {
library = "libmain.so";
}
return library;
}
/**
* This method returns the name of the application entry point
* It can be overridden by derived classes.
*/
protected String getMainFunction() {
return "SDL_main";
}
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/**
* This method is called by SDL before loading the native shared libraries.
* It can be overridden to provide names of shared libraries to be loaded.
* The default implementation returns the defaults. It never returns null.
* An array returned by a new implementation must at least contain "SDL2".
* Also keep in mind that the order the libraries are loaded may matter.
* @return names of shared libraries to be loaded (e.g. "SDL2", "main").
*/
protected String[] getLibraries() {
return new String[] {
"SDL2",
// "SDL2_image",
// "SDL2_mixer",
// "SDL2_net",
// "SDL2_ttf",
"main"
};
}
// Load the .so
public void loadLibraries() {
for (String lib : getLibraries()) {
System.loadLibrary(lib);
}
}
/**
* This method is called by SDL before starting the native application thread.
* It can be overridden to provide the arguments after the application name.
* The default implementation returns an empty array. It never returns null.
* @return arguments for the native application.
*/
protected String[] getArguments() {
return new String[0];
}
public static void initialize() {
// The static nature of the singleton and Android quirkyness force us to initialize everything here
// Otherwise, when exiting the app and returning to it, these variables *keep* their pre exit values
mSingleton = null;
mSurface = null;
mTextEdit = null;
mLayout = null;
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mClipboardHandler = null;
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mSDLThread = null;
mExitCalledFromJava = false;
mBrokenLibraries = false;
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mIsResumedCalled = false;
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mIsSurfaceReady = false;
mHasFocus = true;
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mNextNativeState = NativeState.INIT;
mCurrentNativeState = NativeState.INIT;
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}
// Setup
@Override
protected void onCreate(Bundle savedInstanceState) {
Log.v(TAG, "Device: " + android.os.Build.DEVICE);
Log.v(TAG, "Model: " + android.os.Build.MODEL);
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Log.v(TAG, "onCreate()");
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super.onCreate(savedInstanceState);
// Load shared libraries
String errorMsgBrokenLib = "";
try {
loadLibraries();
} catch(UnsatisfiedLinkError e) {
System.err.println(e.getMessage());
mBrokenLibraries = true;
errorMsgBrokenLib = e.getMessage();
} catch(Exception e) {
System.err.println(e.getMessage());
mBrokenLibraries = true;
errorMsgBrokenLib = e.getMessage();
}
if (mBrokenLibraries)
{
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mSingleton = this;
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AlertDialog.Builder dlgAlert = new AlertDialog.Builder(this);
dlgAlert.setMessage("An error occurred while trying to start the application. Please try again and/or reinstall."
+ System.getProperty("line.separator")
+ System.getProperty("line.separator")
+ "Error: " + errorMsgBrokenLib);
dlgAlert.setTitle("SDL Error");
dlgAlert.setPositiveButton("Exit",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,int id) {
// if this button is clicked, close current activity
SDLActivity.mSingleton.finish();
}
});
dlgAlert.setCancelable(false);
dlgAlert.create().show();
return;
}
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// Set up JNI
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SDL.setupJNI();
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// Initialize state
SDL.initialize();
// So we can call stuff from static callbacks
mSingleton = this;
SDL.setContext(this);
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if (Build.VERSION.SDK_INT >= 11) {
mClipboardHandler = new SDLClipboardHandler_API11();
} else {
/* Before API 11, no clipboard notification (eg no SDL_CLIPBOARDUPDATE) */
mClipboardHandler = new SDLClipboardHandler_Old();
}
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// Set up the surface
mSurface = new SDLSurface(getApplication());
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mLayout = new RelativeLayout(this);
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mLayout.addView(mSurface);
setContentView(mLayout);
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setWindowStyle(false);
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// Get filename from "Open with" of another application
Intent intent = getIntent();
if (intent != null && intent.getData() != null) {
String filename = intent.getData().getPath();
if (filename != null) {
Log.v(TAG, "Got filename: " + filename);
SDLActivity.onNativeDropFile(filename);
}
}
}
// Events
@Override
protected void onPause() {
Log.v(TAG, "onPause()");
super.onPause();
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mNextNativeState = NativeState.PAUSED;
mIsResumedCalled = false;
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if (SDLActivity.mBrokenLibraries) {
return;
}
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SDLActivity.handleNativeState();
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}
@Override
protected void onResume() {
Log.v(TAG, "onResume()");
super.onResume();
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mNextNativeState = NativeState.RESUMED;
mIsResumedCalled = true;
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if (SDLActivity.mBrokenLibraries) {
return;
}
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SDLActivity.handleNativeState();
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}
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
Log.v(TAG, "onWindowFocusChanged(): " + hasFocus);
if (SDLActivity.mBrokenLibraries) {
return;
}
SDLActivity.mHasFocus = hasFocus;
if (hasFocus) {
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mNextNativeState = NativeState.RESUMED;
} else {
mNextNativeState = NativeState.PAUSED;
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}
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SDLActivity.handleNativeState();
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}
@Override
public void onLowMemory() {
Log.v(TAG, "onLowMemory()");
super.onLowMemory();
if (SDLActivity.mBrokenLibraries) {
return;
}
SDLActivity.nativeLowMemory();
}
@Override
protected void onDestroy() {
Log.v(TAG, "onDestroy()");
if (SDLActivity.mBrokenLibraries) {
super.onDestroy();
// Reset everything in case the user re opens the app
SDLActivity.initialize();
return;
}
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mNextNativeState = NativeState.PAUSED;
SDLActivity.handleNativeState();
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// 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(TAG, "Problem stopping thread: " + e);
}
SDLActivity.mSDLThread = null;
//Log.v(TAG, "Finished waiting for SDL thread");
}
super.onDestroy();
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// Reset everything in case the user re opens the app
SDLActivity.initialize();
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
if (SDLActivity.mBrokenLibraries) {
return false;
}
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 ||
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keyCode == KeyEvent.KEYCODE_ZOOM_IN || /* API 11 */
keyCode == KeyEvent.KEYCODE_ZOOM_OUT /* API 11 */
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) {
return false;
}
return super.dispatchKeyEvent(event);
}
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/* Transition to next state */
public static void handleNativeState() {
if (mNextNativeState == mCurrentNativeState) {
// Already in same state, discard.
return;
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}
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// Try a transition to init state
if (mNextNativeState == NativeState.INIT) {
mCurrentNativeState = mNextNativeState;
return;
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}
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// Try a transition to paused state
if (mNextNativeState == NativeState.PAUSED) {
nativePause();
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if (mSurface != null)
mSurface.handlePause();
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mCurrentNativeState = mNextNativeState;
return;
}
// Try a transition to resumed state
if (mNextNativeState == NativeState.RESUMED) {
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if (mIsSurfaceReady && mHasFocus && mIsResumedCalled) {
if (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
// FIXME: Why aren't we enabling sensor input at start?
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mSDLThread = new Thread(new SDLMain(), "SDLThread");
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mSurface.enableSensor(Sensor.TYPE_ACCELEROMETER, true);
mSDLThread.start();
}
nativeResume();
mSurface.handleResume();
mCurrentNativeState = mNextNativeState;
}
}
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}
/* 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;
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static final int COMMAND_CHANGE_WINDOW_STYLE = 2;
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static final int COMMAND_TEXTEDIT_HIDE = 3;
static final int COMMAND_SET_KEEP_SCREEN_ON = 5;
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) {
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Context context = SDL.getContext();
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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;
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case COMMAND_CHANGE_WINDOW_STYLE:
if (context instanceof Activity) {
Window window = ((Activity) context).getWindow();
if (window != null) {
if ((msg.obj instanceof Integer) && (((Integer) msg.obj).intValue() != 0)) {
int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
View.SYSTEM_UI_FLAG_FULLSCREEN |
View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
window.getDecorView().setSystemUiVisibility(flags);
window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
} else {
int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
window.getDecorView().setSystemUiVisibility(flags);
window.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
}
}
} else {
Log.e(TAG, "error handling message, getContext() returned no Activity");
}
break;
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case COMMAND_TEXTEDIT_HIDE:
if (mTextEdit != null) {
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// Note: On some devices setting view to GONE creates a flicker in landscape.
// Setting the View's sizes to 0 is similar to GONE but without the flicker.
// The sizes will be set to useful values when the keyboard is shown again.
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mTextEdit.setLayoutParams(new RelativeLayout.LayoutParams(0, 0));
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InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(mTextEdit.getWindowToken(), 0);
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mScreenKeyboardShown = false;
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}
break;
case COMMAND_SET_KEEP_SCREEN_ON:
{
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if (context instanceof Activity) {
Window window = ((Activity) context).getWindow();
if (window != null) {
if ((msg.obj instanceof Integer) && (((Integer) msg.obj).intValue() != 0)) {
window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
} else {
window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
}
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}
}
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
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public static native int nativeSetupJNI();
public static native int nativeRunMain(String library, String function, Object arguments);
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public static native void nativeLowMemory();
public static native void nativeQuit();
public static native void nativePause();
public static native void nativeResume();
public static native void onNativeDropFile(String filename);
public static native void onNativeResize(int x, int y, int format, float rate);
public static native void onNativeKeyDown(int keycode);
public static native void onNativeKeyUp(int keycode);
public static native void onNativeKeyboardFocusLost();
public static native void onNativeMouse(int button, int action, float x, float y);
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);
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public static native void onNativeClipboardChanged();
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public static native void onNativeSurfaceChanged();
public static native void onNativeSurfaceDestroyed();
public static native String nativeGetHint(String name);
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public static native void nativeSetenv(String name, String value);
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/**
* This method is called by SDL using JNI.
*/
public static boolean setActivityTitle(String title) {
// Called from SDLMain() thread and can't directly affect the view
return mSingleton.sendCommand(COMMAND_CHANGE_TITLE, title);
}
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/**
* This method is called by SDL using JNI.
*/
public static void setWindowStyle(boolean fullscreen) {
// Called from SDLMain() thread and can't directly affect the view
mSingleton.sendCommand(COMMAND_CHANGE_WINDOW_STYLE, fullscreen ? 1 : 0);
}
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/**
* This method is called by SDL using JNI.
* This is a static method for JNI convenience, it calls a non-static method
* so that is can be overridden
*/
public static void setOrientation(int w, int h, boolean resizable, String hint)
{
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if (mSingleton != null) {
mSingleton.setOrientationBis(w, h, resizable, hint);
}
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}
/**
* This can be overridden
*/
public void setOrientationBis(int w, int h, boolean resizable, String hint)
{
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int orientation = -1;
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if (hint.contains("LandscapeRight") && hint.contains("LandscapeLeft")) {
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orientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE;
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} else if (hint.contains("LandscapeRight")) {
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orientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
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} else if (hint.contains("LandscapeLeft")) {
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orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
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} else if (hint.contains("Portrait") && hint.contains("PortraitUpsideDown")) {
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orientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT;
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} else if (hint.contains("Portrait")) {
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orientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
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} else if (hint.contains("PortraitUpsideDown")) {
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orientation = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
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}
/* no valid hint */
if (orientation == -1) {
if (resizable) {
/* no fixed orientation */
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} else {
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if (w > h) {
orientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE;
} else {
orientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT;
}
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}
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}
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Log.v("SDL", "setOrientation() orientation=" + orientation + " width=" + w +" height="+ h +" resizable=" + resizable + " hint=" + hint);
if (orientation != -1) {
mSingleton.setRequestedOrientation(orientation);
}
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}
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/**
* This method is called by SDL using JNI.
*/
public static boolean isScreenKeyboardShown()
{
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if (mTextEdit == null) {
return false;
}
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if (!mScreenKeyboardShown) {
return false;
}
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InputMethodManager imm = (InputMethodManager) SDL.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
return imm.isAcceptingText();
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}
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/**
* This method is called by SDL using JNI.
*/
public static boolean sendMessage(int command, int param) {
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if (mSingleton == null) {
return false;
}
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return mSingleton.sendCommand(command, Integer.valueOf(param));
}
/**
* This method is called by SDL using JNI.
*/
public static Context getContext() {
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return SDL.getContext();
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}
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/**
* This method is called by SDL using JNI.
*/
public static boolean isAndroidTV() {
UiModeManager uiModeManager = (UiModeManager) getContext().getSystemService(UI_MODE_SERVICE);
return (uiModeManager.getCurrentModeType() == Configuration.UI_MODE_TYPE_TELEVISION);
}
/**
* This method is called by SDL using JNI.
*/
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public static DisplayMetrics getDisplayDPI() {
return getContext().getResources().getDisplayMetrics();
}
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/**
* This method is called by SDL using JNI.
*/
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public static boolean getManifestEnvironmentVariables() {
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try {
ApplicationInfo applicationInfo = getContext().getPackageManager().getApplicationInfo(getContext().getPackageName(), PackageManager.GET_META_DATA);
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Bundle bundle = applicationInfo.metaData;
if (bundle == null) {
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return false;
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}
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String prefix = "SDL_ENV.";
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final int trimLength = prefix.length();
for (String key : bundle.keySet()) {
if (key.startsWith(prefix)) {
String name = key.substring(trimLength);
String value = bundle.get(key).toString();
nativeSetenv(name, value);
}
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}
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/* environment variables set! */
return true;
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} catch (Exception e) {
Log.v("SDL", "exception " + e.toString());
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}
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return false;
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}
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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() {
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RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(w, h + HEIGHT_PADDING);
params.leftMargin = x;
params.topMargin = y;
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if (mTextEdit == null) {
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mTextEdit = new DummyEdit(SDL.getContext());
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mLayout.addView(mTextEdit, params);
} else {
mTextEdit.setLayoutParams(params);
}
mTextEdit.setVisibility(View.VISIBLE);
mTextEdit.requestFocus();
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InputMethodManager imm = (InputMethodManager) SDL.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
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imm.showSoftInput(mTextEdit, 0);
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mScreenKeyboardShown = true;
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}
}
/**
* This method is called by SDL using JNI.
*/
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));
}
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public static boolean isTextInputEvent(KeyEvent event) {
// Key pressed with Ctrl should be sent as SDL_KEYDOWN/SDL_KEYUP and not SDL_TEXTINPUT
if (android.os.Build.VERSION.SDK_INT >= 11) {
if (event.isCtrlPressed()) {
return false;
}
}
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return event.isPrintingKey() || event.getKeyCode() == KeyEvent.KEYCODE_SPACE;
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}
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/**
* This method is called by SDL using JNI.
*/
public static Surface getNativeSurface() {
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if (SDLActivity.mSurface == null) {
return null;
}
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return SDLActivity.mSurface.getNativeSurface();
}
// Input
/**
* This method is called by SDL using JNI.
* @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);
}
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// APK expansion files support
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/** com.android.vending.expansion.zipfile.ZipResourceFile object or null. */
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private static Object expansionFile;
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/** com.android.vending.expansion.zipfile.ZipResourceFile's getInputStream() or null. */
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private static Method expansionFileMethod;
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/**
* This method is called by SDL using JNI.
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* @return an InputStream on success or null if no expansion file was used.
* @throws IOException on errors. Message is set for the SDL error message.
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*/
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public static InputStream openAPKExpansionInputStream(String fileName) throws IOException {
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// Get a ZipResourceFile representing a merger of both the main and patch files
if (expansionFile == null) {
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String mainHint = nativeGetHint("SDL_ANDROID_APK_EXPANSION_MAIN_FILE_VERSION");
if (mainHint == null) {
return null; // no expansion use if no main version was set
}
String patchHint = nativeGetHint("SDL_ANDROID_APK_EXPANSION_PATCH_FILE_VERSION");
if (patchHint == null) {
return null; // no expansion use if no patch version was set
}
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Integer mainVersion;
Integer patchVersion;
try {
mainVersion = Integer.valueOf(mainHint);
patchVersion = Integer.valueOf(patchHint);
} catch (NumberFormatException ex) {
ex.printStackTrace();
throw new IOException("No valid file versions set for APK expansion files", ex);
}
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try {
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// To avoid direct dependency on Google APK expansion library that is
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// not a part of Android SDK we access it using reflection
expansionFile = Class.forName("com.android.vending.expansion.zipfile.APKExpansionSupport")
.getMethod("getAPKExpansionZipFile", Context.class, int.class, int.class)
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.invoke(null, SDL.getContext(), mainVersion, patchVersion);
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expansionFileMethod = expansionFile.getClass()
.getMethod("getInputStream", String.class);
} catch (Exception ex) {
ex.printStackTrace();
expansionFile = null;
expansionFileMethod = null;
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throw new IOException("Could not access APK expansion support library", ex);
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}
}
// Get an input stream for a known file inside the expansion file ZIPs
InputStream fileStream;
try {
fileStream = (InputStream)expansionFileMethod.invoke(expansionFile, fileName);
} catch (Exception ex) {
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// calling "getInputStream" failed
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ex.printStackTrace();
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throw new IOException("Could not open stream from APK expansion file", ex);
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}
if (fileStream == null) {
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// calling "getInputStream" was successful but null was returned
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throw new IOException("Could not find path in APK expansion file");
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}
return fileStream;
}
// Messagebox
/** Result of current messagebox. Also used for blocking the calling thread. */
protected final int[] messageboxSelection = new int[1];
/** Id of current dialog. */
protected int dialogs = 0;
/**
* This method is called by SDL using JNI.
* Shows the messagebox from UI thread and block calling thread.
* buttonFlags, buttonIds and buttonTexts must have same length.
* @param buttonFlags array containing flags for every button.
* @param buttonIds array containing id for every button.
* @param buttonTexts array containing text for every button.
* @param colors null for default or array of length 5 containing colors.
* @return button id or -1.
*/
public int messageboxShowMessageBox(
final int flags,
final String title,
final String message,
final int[] buttonFlags,
final int[] buttonIds,
final String[] buttonTexts,
final int[] colors) {
messageboxSelection[0] = -1;
// sanity checks
if ((buttonFlags.length != buttonIds.length) && (buttonIds.length != buttonTexts.length)) {
return -1; // implementation broken
}
// collect arguments for Dialog
final Bundle args = new Bundle();
args.putInt("flags", flags);
args.putString("title", title);
args.putString("message", message);
args.putIntArray("buttonFlags", buttonFlags);
args.putIntArray("buttonIds", buttonIds);
args.putStringArray("buttonTexts", buttonTexts);
args.putIntArray("colors", colors);
// trigger Dialog creation on UI thread
runOnUiThread(new Runnable() {
@Override
public void run() {
showDialog(dialogs++, args);
}
});
// block the calling thread
synchronized (messageboxSelection) {
try {
messageboxSelection.wait();
} catch (InterruptedException ex) {
ex.printStackTrace();
return -1;
}
}
// return selected value
return messageboxSelection[0];
}
@Override
protected Dialog onCreateDialog(int ignore, Bundle args) {
// TODO set values from "flags" to messagebox dialog
// get colors
int[] colors = args.getIntArray("colors");
int backgroundColor;
int textColor;
int buttonBorderColor;
int buttonBackgroundColor;
int buttonSelectedColor;
if (colors != null) {
int i = -1;
backgroundColor = colors[++i];
textColor = colors[++i];
buttonBorderColor = colors[++i];
buttonBackgroundColor = colors[++i];
buttonSelectedColor = colors[++i];
} else {
backgroundColor = Color.TRANSPARENT;
textColor = Color.TRANSPARENT;
buttonBorderColor = Color.TRANSPARENT;
buttonBackgroundColor = Color.TRANSPARENT;
buttonSelectedColor = Color.TRANSPARENT;
}
// create dialog with title and a listener to wake up calling thread
final Dialog dialog = new Dialog(this);
dialog.setTitle(args.getString("title"));
dialog.setCancelable(false);
dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(DialogInterface unused) {
synchronized (messageboxSelection) {
messageboxSelection.notify();
}
}
});
// create text
TextView message = new TextView(this);
message.setGravity(Gravity.CENTER);
message.setText(args.getString("message"));
if (textColor != Color.TRANSPARENT) {
message.setTextColor(textColor);
}
// create buttons
int[] buttonFlags = args.getIntArray("buttonFlags");
int[] buttonIds = args.getIntArray("buttonIds");
String[] buttonTexts = args.getStringArray("buttonTexts");
final SparseArray<Button> mapping = new SparseArray<Button>();
LinearLayout buttons = new LinearLayout(this);
buttons.setOrientation(LinearLayout.HORIZONTAL);
buttons.setGravity(Gravity.CENTER);
for (int i = 0; i < buttonTexts.length; ++i) {
Button button = new Button(this);
final int id = buttonIds[i];
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
messageboxSelection[0] = id;
dialog.dismiss();
}
});
if (buttonFlags[i] != 0) {
// see SDL_messagebox.h
if ((buttonFlags[i] & 0x00000001) != 0) {
mapping.put(KeyEvent.KEYCODE_ENTER, button);
}
if ((buttonFlags[i] & 0x00000002) != 0) {
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mapping.put(KeyEvent.KEYCODE_ESCAPE, button); /* API 11 */
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}
}
button.setText(buttonTexts[i]);
if (textColor != Color.TRANSPARENT) {
button.setTextColor(textColor);
}
if (buttonBorderColor != Color.TRANSPARENT) {
// TODO set color for border of messagebox button
}
if (buttonBackgroundColor != Color.TRANSPARENT) {
Drawable drawable = button.getBackground();
if (drawable == null) {
// setting the color this way removes the style
button.setBackgroundColor(buttonBackgroundColor);
} else {