--- /dev/null
+/* -*- Mode: java; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * xscreensaver, Copyright (c) 2016-2017 Jamie Zawinski <jwz@jwz.org>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ *
+ * The superclass of every saver's Daydream.
+ *
+ * Each Daydream needs a distinct subclass in order to show up in the list.
+ * We know which saver we are running by the subclass name; we know which
+ * API to use by how the subclass calls super().
+ */
+
+package org.jwz.xscreensaver;
+
+import android.view.Display;
+import android.view.Surface;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+import android.view.View;
+import android.view.Window;
+import android.view.WindowManager;
+import android.view.KeyEvent;
+import android.service.dreams.DreamService;
+import android.view.GestureDetector;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.os.Message;
+import android.os.Handler;
+import android.os.Looper;
+import android.util.Log;
+
+public class Daydream extends DreamService {
+
+ private class SaverView extends SurfaceView
+ implements SurfaceHolder.Callback {
+
+ private boolean initTried = false;
+ private jwxyz jwxyz_obj;
+
+ private GestureDetector detector;
+
+ private Runnable on_quit = new Runnable() {
+ @Override
+ public void run() {
+ finish(); // Exit the Daydream
+ }
+ };
+
+ SaverView () {
+ super (Daydream.this);
+ getHolder().addCallback(this);
+ }
+
+ @Override
+ public void surfaceChanged (SurfaceHolder holder, int format,
+ int width, int height) {
+
+ if (width == 0 || height == 0) {
+ detector = null;
+ jwxyz_obj.close();
+ jwxyz_obj = null;
+ }
+
+ Log.d ("xscreensaver",
+ String.format("surfaceChanged: %dx%d", width, height));
+
+ /*
+ double r = 0;
+
+ Display d = view.getDisplay();
+
+ if (d != null) {
+ switch (d.getRotation()) {
+ case Surface.ROTATION_90: r = 90; break;
+ case Surface.ROTATION_180: r = 180; break;
+ case Surface.ROTATION_270: r = 270; break;
+ }
+ }
+ */
+
+ if (jwxyz_obj == null) {
+ jwxyz_obj = new jwxyz (jwxyz.saverNameOf (Daydream.this),
+ Daydream.this, screenshot, width, height,
+ holder.getSurface(), on_quit);
+ detector = new GestureDetector (Daydream.this, jwxyz_obj);
+ } else {
+ jwxyz_obj.resize (width, height);
+ }
+
+ jwxyz_obj.start();
+ }
+
+ @Override
+ public void surfaceCreated (SurfaceHolder holder) {
+ if (!initTried) {
+ initTried = true;
+ } else {
+ if (jwxyz_obj != null) {
+ jwxyz_obj.close();
+ jwxyz_obj = null;
+ }
+ }
+ }
+
+ @Override
+ public void surfaceDestroyed (SurfaceHolder holder) {
+ if (jwxyz_obj != null) {
+ jwxyz_obj.close();
+ jwxyz_obj = null;
+ }
+ }
+
+ @Override
+ public boolean onTouchEvent (MotionEvent event) {
+ detector.onTouchEvent (event);
+ if (event.getAction() == MotionEvent.ACTION_UP)
+ jwxyz_obj.dragEnded (event);
+ return true;
+ }
+
+ @Override
+ public boolean onKeyDown (int keyCode, KeyEvent event) {
+ // In the emulator, this doesn't receive keyboard arrow keys, PgUp, etc.
+ // Some other keys like "Home" are interpreted before we get here, and
+ // function keys do weird shit.
+
+ // TODO: Does this still work? And is the above still true?
+
+ if (view.jwxyz_obj != null)
+ view.jwxyz_obj.sendKeyEvent (event);
+ return true;
+ }
+ }
+
+ private SaverView view;
+ Bitmap screenshot;
+
+ private void LOG (String fmt, Object... args) {
+ Log.d ("xscreensaver",
+ this.getClass().getSimpleName() + ": " +
+ String.format (fmt, args));
+ }
+
+ protected Daydream () {
+ super();
+ }
+
+ // Called when jwxyz_abort() is called, or other exceptions are thrown.
+ //
+/*
+ @Override
+ public void uncaughtException (Thread thread, Throwable ex) {
+
+ renderer = null;
+ String err = ex.toString();
+ LOG ("Caught exception: %s", err);
+
+ this.finish(); // Exit the Daydream
+
+ final AlertDialog.Builder b = new AlertDialog.Builder(this);
+ b.setMessage (err);
+ b.setCancelable (false);
+ b.setPositiveButton ("Bummer",
+ new DialogInterface.OnClickListener() {
+ public void onClick(DialogInterface d, int id) {
+ }
+ });
+
+ // #### This isn't working:
+ // "Attempted to add window with non-application token"
+ // "Unable to add window -- token null is not for an application"
+ // I think I need to get an "Activity" to run it on somehow?
+
+ new Handler (Looper.getMainLooper()).post (new Runnable() {
+ public void run() {
+ AlertDialog alert = b.create();
+ alert.setTitle (this.getClass().getSimpleName() + " crashed");
+ alert.setIcon(android.R.drawable.ic_dialog_alert);
+ alert.show();
+ }
+ });
+
+ old_handler.uncaughtException (thread, ex);
+ }
+*/
+
+
+ @Override
+ public void onAttachedToWindow() {
+ super.onAttachedToWindow();
+
+ setInteractive (true);
+ setFullscreen (true);
+ saveScreenshot();
+
+ view = new SaverView ();
+ setContentView (view);
+ }
+
+ public void onDreamingStarted() {
+ super.onDreamingStarted();
+ // view.jwxyz_obj.start();
+ }
+
+ public void onDreamingStopped() {
+ super.onDreamingStopped();
+ view.jwxyz_obj.pause();
+ }
+
+ public void onDetachedFromWindow() {
+ super.onDetachedFromWindow();
+ try {
+ if (view.jwxyz_obj != null)
+ view.jwxyz_obj.pause();
+ } catch (Exception exc) {
+ // Fun fact: Android swallows exceptions coming from here, then crashes
+ // elsewhere.
+ LOG ("onDetachedFromWindow: %s", exc.toString());
+ throw exc;
+ }
+ }
+
+
+ // At startup, before we have blanked the screen, save a screenshot
+ // for later use by the hacks.
+ //
+ private void saveScreenshot() {
+ View view = getWindow().getDecorView().getRootView();
+ if (view == null) {
+ LOG ("unable to get root view for screenshot");
+ } else {
+
+ // This doesn't work:
+ /*
+ boolean was = view.isDrawingCacheEnabled();
+ if (!was) view.setDrawingCacheEnabled (true);
+ view.buildDrawingCache();
+ screenshot = view.getDrawingCache();
+ if (!was) view.setDrawingCacheEnabled (false);
+ if (screenshot == null) {
+ LOG ("unable to get screenshot bitmap from %s", view.toString());
+ } else {
+ screenshot = Bitmap.createBitmap (screenshot);
+ }
+ */
+
+ // This doesn't work either: width and height are both -1...
+
+ int w = view.getLayoutParams().width;
+ int h = view.getLayoutParams().height;
+ if (w <= 0 || h <= 0) {
+ LOG ("unable to get root view for screenshot");
+ } else {
+ screenshot = Bitmap.createBitmap (w, h, Bitmap.Config.ARGB_8888);
+ Canvas c = new Canvas (screenshot);
+ view.layout (0, 0, w, h);
+ view.draw (c);
+ }
+ }
+ }
+}
projects / xscreensaver / blobdiff