content: /*
   * Copyright (C) 2010 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.example.plasma;
  
  import android.annotation.SuppressLint;
  import android.app.Activity;
  import android.graphics.Point;
  import android.os.Bundle;
  import android.content.Context;
  import android.view.View;
  import android.graphics.Bitmap;
  import android.graphics.Canvas;
  import android.view.Display;
  import android.view.WindowManager;
  
  public class Plasma extends Activity
  {
      // Called when the activity is first created.
      @Override
      public void onCreate(Bundle savedInstanceState)
      {
          super.onCreate(savedInstanceState);
          Display display = getWindowManager().getDefaultDisplay();
          Point displaySize = new Point();
          display.getSize(displaySize);
          setContentView(new PlasmaView(this, displaySize.x, displaySize.y));
      }
  
      // load our native library
      static {
          System.loadLibrary("plasma");
      }
  }
  
  // Custom view for rendering plasma.
  //
  // Note: suppressing lint wrarning for ViewConstructor since it is
  //       manually set from the activity and not used in any layout.
  @SuppressLint("ViewConstructor")
  class PlasmaView extends View {
      private Bitmap mBitmap;
      private long mStartTime;
  
      // implementend by libplasma.so
      private static native void renderPlasma(Bitmap  bitmap, long time_ms);
  
      public PlasmaView(Context context, int width, int height) {
          super(context);
          mBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
          mStartTime = System.currentTimeMillis();
      }
  
      @Override protected void onDraw(Canvas canvas) {
          renderPlasma(mBitmap, System.currentTimeMillis() - mStartTime);
          canvas.drawBitmap(mBitmap, 0, 0, null);
          // force a redraw, with a different time-based pattern.
          invalidate();
      }
  
      @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) {
          mBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.RGB_565);
      }
  
  }
  