From http://www.jwz.org/xscreensaver/xscreensaver-5.38.tar.gz

[xscreensaver] / android / xscreensaver / src / org / jwz / xscreensaver / XScreenSaverWallpaper.java

diff --git a/android/xscreensaver/src/org/jwz/xscreensaver/XScreenSaverWallpaper.java b/android/xscreensaver/src/org/jwz/xscreensaver/XScreenSaverWallpaper.java
new file mode 100644 (file)
index 0000000..4ce5da5
--- /dev/null
+++ b/android/xscreensaver/src/org/jwz/xscreensaver/XScreenSaverWallpaper.java
@@ -0,0 +1,105 @@
+/* -*- 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 Wallpaper.
+ *
+ * Each Wallpaper 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.service.wallpaper.WallpaperService;
+import android.view.GestureDetector;
+import android.view.SurfaceHolder;
+import android.util.Log;
+import java.lang.RuntimeException;
+import java.lang.Thread;
+import org.jwz.xscreensaver.jwxyz;
+
+public class XScreenSaverWallpaper extends WallpaperService
+/*implements GestureDetector.OnGestureListener,
+             GestureDetector.OnDoubleTapListener, */ {
+
+  /* TODO: Input! */
+
+  @Override
+  public Engine onCreateEngine() {
+    // Log.d("xscreensaver", "tid = " + Thread.currentThread().getId());
+    return new XScreenSaverGLEngine();
+  }
+
+  class XScreenSaverGLEngine extends Engine {
+
+    private boolean initTried = false;
+    private jwxyz jwxyz_obj;
+
+    @Override
+    public void onSurfaceCreated (SurfaceHolder holder) {
+      super.onSurfaceCreated(holder);
+
+      if (!initTried) {
+        initTried = true;
+      } else {
+        if (jwxyz_obj != null) {
+          jwxyz_obj.close();
+          jwxyz_obj = null;
+        }
+      }
+    }
+
+    @Override
+    public void onVisibilityChanged(final boolean visible) {
+      if (jwxyz_obj != null) {
+        if (visible)
+          jwxyz_obj.start();
+        else
+          jwxyz_obj.pause();
+      }
+    }
+
+    @Override
+    public void onSurfaceChanged (SurfaceHolder holder, int format,
+                                  int width, int height) {
+
+      super.onSurfaceChanged(holder, format, width, height);
+
+      if (width == 0 || height == 0) {
+        jwxyz_obj.close();
+        jwxyz_obj = null;
+      }
+
+      Log.d ("xscreensaver",
+             String.format("surfaceChanged: %dx%d", width, height));
+
+      if (jwxyz_obj == null) {
+        jwxyz_obj = new jwxyz (jwxyz.saverNameOf(XScreenSaverWallpaper.this),
+                               XScreenSaverWallpaper.this, null,
+                               width, height, holder.getSurface(), null);
+      } else {
+        jwxyz_obj.resize (width, height);
+      }
+
+      jwxyz_obj.start();
+    }
+
+    @Override
+    public void onSurfaceDestroyed (SurfaceHolder holder) {
+      super.onSurfaceDestroyed (holder);
+
+      if (jwxyz_obj != null) {
+        jwxyz_obj.close();
+        jwxyz_obj = null;
+      }
+    }
+  }
+}