Android Open Source - sana Selectable Image View

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License

The source code is released under:

Copyright (c) 2010, Moca All rights reserved. The source code for Moca is licensed under the BSD license as follows: Redistribution and use in source and binary forms, with or without modification, ...

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Java Source Code

/**
 * //  ww  w .  j a  v a  2s  .co  m
 */
package org.moca;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ContextMenu;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.widget.ImageView;

/**id
 * @author markyen
 *
 */
public class SelectableImageView extends ImageView {
  private static final String TAG = SelectableImageView.class.toString();
  
  private long imageId = -1;
  private ScalingImageAdapter adapter;
  
  /**
   * @param context
   */
  public SelectableImageView(Context context, ScalingImageAdapter adapter) {
    super(context);
    this.adapter = adapter;
  }
  
  public long getImageId() {
    return imageId;
  }

  public void setImageId(long imageId) {
    this.imageId = imageId;
  }
  
  private boolean showBorder() {
    if(imageId != -1) {
      return adapter.isSelected(imageId);
    }
    return false;
  }

  @Override
  protected void onDraw(Canvas canvas) {
    Log.d(TAG,"draw");
    super.onDraw(canvas);
    
    if (showBorder()) {
//      Log.v("mocapicture","selected!");
      Rect r_left = new Rect(0,0,8,canvas.getHeight());
      Rect r_top = new Rect(0,0,canvas.getWidth(),8);
      Rect r_right = new Rect(canvas.getWidth()-8,0,canvas.getWidth(),canvas.getHeight());
      Rect r_bottom = new Rect(0,canvas.getHeight()-8,canvas.getWidth(),canvas.getHeight());
      Paint paint = new Paint();
      paint.setStyle(Paint.Style.FILL);
      paint.setColor(Color.YELLOW);
      canvas.drawRect(r_left, paint);
      canvas.drawRect(r_top, paint);
      canvas.drawRect(r_right, paint);
      canvas.drawRect(r_bottom, paint);
    }
  }
}

Java Source Code List