Android Open Source - Aviary-Android-SDK Cds Preview Transformer

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Java Source Code

package com.aviary.android.feather.graphics;
//  w ww. j  av  a 2 s  . c  o  m
import java.util.concurrent.Callable;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.BitmapFactory.Options;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;

import com.aviary.android.feather.cds.AviaryCds;
import com.aviary.android.feather.common.log.LoggerFactory;
import com.aviary.android.feather.common.log.LoggerFactory.Logger;
import com.aviary.android.feather.common.log.LoggerFactory.LoggerType;
import com.aviary.android.feather.library.utils.BitmapUtils;
import com.squareup.picasso.Transformation;

public class CdsPreviewTransformer implements Transformation, Callable<Bitmap> {

  static Logger logger = LoggerFactory.getLogger( CdsPreviewTransformer.class.getSimpleName(), LoggerType.ConsoleLoggerType );

  final String mPath;
  final String mDisplayName;
  final String mType;
  int mTargetDensity;
  int mInputDensity;
  int mMaxW = -1;
  int mMaxH = -1;

  public CdsPreviewTransformer ( String path, String displayName, String type ) {
    mDisplayName = displayName;
    mType = type;
    mPath = path;
  }

  public CdsPreviewTransformer ( String path, String displayName, String type, int inputDensity, int targetDensity, int maxW, int maxH ) {
    this( path, displayName, type );
    mTargetDensity = targetDensity;
    mInputDensity = inputDensity;
    mMaxW = maxW;
    mMaxH = maxH;
  }

  @Override
  public Bitmap transform( Bitmap bitmap ) {
    // ok, first resize to the max size, if necessary
    if ( null != bitmap && ( mMaxW > 0 && mMaxH > 0 ) ) {
      logger.log( "need to resize to: %dx%d", mMaxW, mMaxH );
      Bitmap resized = BitmapUtils.resizeBitmap( bitmap, mMaxW, mMaxH );
      if ( !resized.equals( bitmap ) ) {
        bitmap.recycle();
        bitmap = resized;
      }
    }

    if ( AviaryCds.PACKTYPE_EFFECT.equals( mType ) ) {
      if ( !bitmap.isMutable() ) {
        Bitmap newBitmap = bitmap.copy( bitmap.getConfig(), true );
        if ( newBitmap != bitmap ) {
          bitmap.recycle();
          bitmap = newBitmap;
        }
      }

      if ( null != bitmap && bitmap.isMutable() ) {
        Canvas canvas = new Canvas( bitmap );
        Paint paint = new Paint( Paint.ANTI_ALIAS_FLAG | Paint.SUBPIXEL_TEXT_FLAG );
        paint.setColor( Color.WHITE );
        paint.setTextSize( bitmap.getHeight() / 10 );

        Rect bounds = new Rect();
        paint.getTextBounds( mDisplayName, 0, mDisplayName.length(), bounds );
        canvas.drawText( mDisplayName, ( bitmap.getWidth() - bounds.width() ) / 2, bitmap.getHeight() - paint.descent() - 2, paint );
      }
    }
    logger.log( "final bitmap.size: %dx%d", bitmap.getWidth(), bitmap.getHeight() );
    return bitmap;
  }

  @Override
  public String key() {
    return mPath;
  }

  @Override
  public Bitmap call() throws Exception {
    Bitmap bitmap = decode();
    return transform( bitmap );
  }

  private Bitmap decode() {
    Bitmap bitmap = null;
    Options options = new Options();
    options.inPreferredConfig = Bitmap.Config.RGB_565;
    options.inInputShareable = true;
    options.inPurgeable = true;
    options.inTargetDensity = mTargetDensity;
    options.inDensity = mInputDensity;
    bitmap = BitmapFactory.decodeFile( mPath, options );

    logger.log( "input.density: %d, target.density: %d", mInputDensity, mTargetDensity );
    logger.log( "options.size: %dx%d", options.outWidth, options.outHeight );

    return bitmap;
  }
}

Java Source Code List