Android Open Source - android-imgpro-lib Img Pro

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License

The source code is released under:

MIT License

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Java Source Code

package net.akhyar.android.imgpro;
//from w ww  .  j  av  a  2 s.  c o  m
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;

public class ImgPro {
  public static final int CHANNEL_ALPHA = 8;
  public static final int CHANNEL_RED = 4;
  public static final int CHANNEL_GREEN = 2;
  public static final int CHANNEL_BLUE = 1;

  public static Bitmap resize(Bitmap src, int w2, int h2) {
    int w1 = src.getWidth();
    int h1 = src.getHeight();
    int[] pxSource = new int[w1 * h1];
    int[] pxResult = new int[w2 * h2];

    src.getPixels(pxSource, 0, w1, 0, 0, w1, h1);
    double x_ratio = w1 / (double) w2;
    double y_ratio = h1 / (double) h2;
    double px, py;
    for (int i = 0; i < h2; i++) {
      for (int j = 0; j < w2; j++) {
        px = Math.floor(j * x_ratio);
        py = Math.floor(i * y_ratio);
        pxResult[(i * w2) + j] = pxSource[(int) ((py * w1) + px)];
      }
    }

    return Bitmap.createBitmap(pxResult, w2, h2, Bitmap.Config.ARGB_8888);
  }

  public static Bitmap createSolidBitmap(int color, int width, int height) {
    Bitmap bmp = Bitmap.createBitmap(
        createSolidPixels(color, width * height), width, height,
        Bitmap.Config.ARGB_8888);

    return bmp;
  }

  public static int[] createSolidPixels(int color, int size) {
    int[] pixels = new int[size];
    for (int x = 0; x < size; x++) {
      pixels[x] = color;
    }

    return pixels;
  }

  // possibly unused
  public static Bitmap adjustBitmap(Bitmap src, Action adj) {

    int width = src.getWidth();
    int height = src.getHeight();

    Bitmap result = Bitmap.createBitmap(width, height,
        Bitmap.Config.ARGB_8888);

    int[] pixels = new int[width * height];
    src.getPixels(pixels, 0, width, 0, 0, width, height);

    // pixels = adj.getAdjustedPixels(pixels);
    result.setPixels(pixels, 0, width, 0, 0, width, height);

    return result;
  }

  public static Bitmap createBitmapWithAlphaMask(Bitmap bmpSource,
      Bitmap bmpMask) {
    int width = bmpSource.getWidth();
    int height = bmpSource.getHeight();
    int size = width * height;

    if (width != bmpMask.getWidth() || height != bmpMask.getHeight())
      bmpMask = resize(bmpMask, width, height);

    int[] result = new int[size];
    int[] mask = new int[size];
    bmpSource.getPixels(result, 0, width, 0, 0, width, height);
    bmpMask.getPixels(mask, 0, width, 0, 0, width, height);

    int alphamask = 0xff000000;
    int colormask = 0x00ffffff;
    for (int i = 0; i < size; i++) {
      result[i] = (mask[i] & alphamask) | (result[i] & colormask);
    }

    // Ensuring the bitmap is mutable
    Bitmap bmpResult = Bitmap.createBitmap(width, height,
        Config.ARGB_8888);
    bmpResult.setPixels(result, 0, width, 0, 0, width, height);

    return bmpResult;
  }
}

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