Android Open Source - kluster-android Scale Image View

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License

The source code is released under:

Apache License

Java Source Code

package android.app;
//from ww  w. ja  v a 2  s.c o m
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

/**
 * ImageView that keeps aspect ratio when scaled
 */
public class ScaleImageView extends ImageView {

  public ScaleImageView(Context context) {
    super(context);
  }

  public ScaleImageView(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public ScaleImageView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
  }

  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
  {
      Drawable drawable = getDrawable();
      if (drawable != null)
      {
          int width =  MeasureSpec.getSize(widthMeasureSpec);
          int diw = drawable.getIntrinsicWidth();
          if (diw > 0)
          {
              int height = width * drawable.getIntrinsicHeight() / diw;
              setMeasuredDimension(width, height);
          }
          else
              super.onMeasure(widthMeasureSpec, heightMeasureSpec);
      }
      else
          super.onMeasure(widthMeasureSpec, heightMeasureSpec);
  }

}

Java Source Code List

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