Android Open Source - RadaeePDF-B4A P D F Ink

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License

The source code is released under:

Apache License

Java Source Code

package com.radaee.reader;
import com.radaee.pdf.*;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
//from w  w w .j  a v a 2s .  c  o  m
/**
 * test view<br/>
 * this view clip one page as 100*100 blocks.<br/>
 * every block is a DIB data.
 * @author Radaee
 *
 */
public class PDFInk extends View
{
  Bitmap bitmap;
  int win_cx = 0;
  int win_cy = 0;
  HWriting ink = null;
  boolean pressed = false;
  public PDFInk(Context context)
  {
    super(context);
  }
  public PDFInk(Context context, AttributeSet attrs)
  {
    super(context, attrs);
  }
  protected void onSizeChanged (int w, int h, int oldw, int oldh)
  {
    win_cx = w;
    win_cy = h;
    if( win_cx > 0 && win_cy > 0 )
    {
      if( ink != null ) ink.Destroy();
      if( bitmap != null ) bitmap.recycle();
      ink = new HWriting( win_cx, win_cy, 2, 6, 255, 0, 0 );
      bitmap = Bitmap.createBitmap(win_cx, win_cy, Config.ARGB_8888);
    }
  }
  protected void onDraw( Canvas canvas )
  {
    if( ink == null ) return;
    bitmap.eraseColor(0);
    int bmp = Global.lockBitmap(bitmap);
    ink.OnDraw(bmp);
    Global.unlockBitmap(bitmap, bmp);
    canvas.drawBitmap(bitmap, 0, 0, null);
  }
  public boolean onTouchEvent (MotionEvent event)
  {
    switch( event.getActionMasked() )
    {
    case MotionEvent.ACTION_DOWN:
      if( !pressed )
      {
        pressed = true;
        if( ink != null )
          ink.OnDown(event.getX(), event.getY());
        invalidate();
      }
      break;
    case MotionEvent.ACTION_MOVE:
      if( pressed )
      {
        if( ink != null )
          ink.OnMove(event.getX(), event.getY());
        invalidate();
      }
      break;
    case MotionEvent.ACTION_UP:
      if( pressed )
      {
        if( ink != null )
          ink.OnUp(event.getX(), event.getY());
        pressed = false;
        invalidate();
      }
      break;
    }
    return true;
  }
}

Java Source Code List

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