Android Open Source - android-imgpro-lib Bitmap Task

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License

The source code is released under:

MIT License

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Java Source Code

package net.akhyar.android.perf;
/* w w w . ja va  2 s .c  o m*/
import java.util.LinkedList;

import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.os.AsyncTask;
import android.widget.ImageView;

public class BitmapTask extends AsyncTask<Bitmap, Void, Bitmap> {
  private Worker worker;
  private BitmapTask nextTask = null;
  protected Bitmap bitmap = null;

  protected BitmapTask(Bitmap bitmap) {
    this.bitmap = bitmap;
  }

  protected BitmapTask(Worker worker, BitmapTask nextTask) {
    this.worker = worker;
    this.nextTask = nextTask;
  }

  public BitmapTask(Worker worker) {
    this.worker = worker;
  }

  @Override
  protected Bitmap doInBackground(Bitmap... args) {
    if (bitmap != null)
      return bitmap;
    else if (worker != null)
      return worker.process(args);
    else if (args.length > 0)
      return args[0];
    else
      return null;
  }

  @Override
  protected void onPostExecute(Bitmap result) {
    if (nextTask != null)
      nextTask.execute(result);
  }

  public BitmapTask getNextTask() {
    return nextTask;
  }

  public void setNextTask(BitmapTask nextTask) {
    this.nextTask = nextTask;
  }

  public static class Builder {
    private LinkedList<BitmapTask> tasks = new LinkedList<BitmapTask>();

    public Builder setBitmap(Bitmap bitmap, boolean copy) {
      if (copy)
        bitmap = bitmap.copy(Config.ARGB_8888, true);

      tasks.addLast(new BitmapTask(bitmap));

      return this;
    }

    public Builder setNewBitmap(Bitmap bitmap) {
      tasks.addLast(new BitmapCreator(bitmap));

      return this;
    }

    public Builder cloneBitmap() {
      tasks.addLast(new BitmapCloner(null));

      return this;
    }
    
    public Builder setResultToImageView(ImageView iv){
      tasks.addLast(new SetImageViewBitmapTask(iv));
      
      return this;
    }

    public Builder addTask(Worker worker) {
      addTask(new BitmapTask(worker));
      return this;
    }

    public Builder addTask(BitmapTask task) {
      tasks.addLast(task);
      return this;
    }

    public BitmapTask get() {
      for (int i = 0; i < tasks.size() - 1; i++) {
        tasks.get(i).setNextTask(tasks.get(i + 1));
      }

      return tasks.getFirst();
    }

    public void clear() {
      tasks.clear();
    }
  }

  private static class BitmapCloner extends BitmapTask {

    protected BitmapCloner(Bitmap bitmap) {
      super(bitmap);
    }

    @Override
    protected void onPostExecute(Bitmap bitmap) {
      super.onPostExecute(bitmap.copy(Config.ARGB_8888, true));
    }

  }

  private static class BitmapCreator extends BitmapTask {

    protected BitmapCreator(Bitmap bitmap) {
      super(bitmap);
    }

    @Override
    protected Bitmap doInBackground(Bitmap... args) {
      return bitmap;
    }

  }

}

Java Source Code List