get Rounded Bitmap By Bitmap - Android Graphics

Android examples for Graphics:Bitmap Rounded

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Description

get Rounded Bitmap By Bitmap

Demo Code


import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;

public class Main {
  private static final String TAG = "BitmapCustomUtils";

  public static Bitmap getRoundedRectBitmap(Bitmap bitmap, int size) {
    Bitmap result;//from  w w  w.  ja v  a  2s  .co  m
    if (bitmap != null) {
      try {
        bitmap = getScaledBitmap(bitmap, size); // NOT CHECKING ERROR COS IF NOT RETURN NOT CHANGED BITMAP
        result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(result);

        int color = 0xff424242;
        Paint paint = new Paint();

        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawCircle(size / 2, size / 2, size / 2, paint);
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, 0, 0, paint);
        return result;
      } catch (NullPointerException e) {
        e.printStackTrace();
      } catch (OutOfMemoryError o) {
        o.printStackTrace();
      } catch (Exception e) {
        e.printStackTrace();
      }

    }
    return null;
  }

  private static Bitmap getScaledBitmap(Bitmap bitmap, int size) {
    // TODO set up in a function
    if (bitmap != null && bitmap.getHeight() != size && bitmap.getWidth() != size) {
      // resize bitmap to accord on size
      float ratio;
      float scaledWidth = -1;
      float scaledHeight = -1;
      if ((bitmap.getHeight() < size)) {
        ratio = (float) size / (float) bitmap.getHeight();
        scaledHeight = size;
        scaledWidth = (float) bitmap.getWidth() * ratio;
      }

      if ((bitmap.getWidth() < size) && scaledHeight != -1) {
        ratio = (float) size / (float) bitmap.getWidth();
        scaledWidth = size;
        scaledHeight = (float) bitmap.getWidth() * ratio;
      }

      if (scaledHeight == -1 && scaledWidth == -1) {
        // scale on width even if they are same
        if (bitmap.getWidth() <= bitmap.getHeight()) {
          ratio = (float) size / (float) bitmap.getWidth();
          scaledWidth = size;
          scaledHeight = (float) bitmap.getHeight() * ratio;
        } else if (bitmap.getWidth() > bitmap.getHeight()) {
          // scale on height
          ratio = (float) size / (float) bitmap.getHeight();
          scaledHeight = size;
          scaledWidth = (float) bitmap.getWidth() * ratio;
        }
      }
      return Bitmap.createScaledBitmap(bitmap, (int) scaledWidth, (int) scaledHeight, false);
    }

    // return old bitmap
    return bitmap;
  }
}

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