Example usage for android.graphics Bitmap createBitmap

Introduction

In this page you can find the example usage for android.graphics Bitmap createBitmap.

Prototype

public static Bitmap createBitmap(@NonNull DisplayMetrics display, @NonNull @ColorInt int[] colors, int offset,
        int stride, int width, int height, @NonNull Config config)

Source Link

Document

Returns a immutable bitmap with the specified width and height, with each pixel value set to the corresponding value in the colors array.

Usage

From source file:Main.java

static public Bitmap scaleBitmap(Bitmap bitmap, float scaleX, float scaleY) {
    Matrix matrix = new Matrix();
    matrix.postScale(scaleX, scaleY);//from  w w w.  j  a  v  a 2 s  .  c  o  m
    return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}

From source file:Main.java

/**
 * Expand the bitmap to the specified scale.
 *
 * @param bitmap to expand.//  w  w w. j  a  v a 2s.  c o  m
 * @param scale  the expand scale, must be > 1.0.
 * @return the expanded bitmap.
 */
public static Bitmap expand(Bitmap bitmap, float scale) {
    if (scale <= 1.0f) {
        return bitmap.copy(bitmap.getConfig(), false);
    }

    Matrix matrix = new Matrix();
    matrix.postScale(scale, scale);

    return Bitmap.createBitmap(bitmap, 0, 0, (int) (scale * bitmap.getWidth()),
            (int) (scale * bitmap.getHeight()), matrix, true);
}

From source file:Main.java

public static Bitmap createResizedBitmap(Bitmap srcBit, int newWidth, int newHeight) {
    int width = srcBit.getWidth();
    int height = srcBit.getHeight();

    // calculate the scale - in this case = 0.4f
    float scaleWidth = ((float) newWidth) / width;
    float scaleHeight = ((float) newHeight) / height;

    Matrix matrix = new Matrix();
    matrix.postScale(scaleWidth, scaleHeight);
    Bitmap resizedBitmap = Bitmap.createBitmap(srcBit, 0, 0, width, height, matrix, true);

    width = resizedBitmap.getWidth();/*from  w w w  .  j  av a 2  s. c  o  m*/
    height = resizedBitmap.getHeight();

    Log.i("ImageResize",
            "Image Resize Result : " + Boolean.toString((newHeight == height) && (newWidth == width)));
    return resizedBitmap;
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, float w, float h) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Matrix matrix = new Matrix();
    float scaleW = ((float) w / width);
    float scaleH = ((float) h / height);
    matrix.postScale(scaleW, scaleH);//from   ww  w  . ja  va2 s  . c  o m
    Bitmap newBmp = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);

    return newBmp;
}

From source file:Main.java

public static Bitmap rotate(Bitmap bitmap, int degrees) {
    Matrix matrix = new Matrix();
    matrix.postRotate(degrees);/* w w w. j  a  va  2 s  . c  o m*/
    return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) {
    int w = bitmap.getWidth();
    int h = bitmap.getHeight();
    Matrix matrix = new Matrix();
    float scaleWidth = ((float) width / w);
    float scaleHeight = ((float) height / h);
    matrix.postScale(scaleWidth, scaleHeight);
    Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
    return newbmp;
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, int w, int h) {
    Bitmap newbmp = null;/*from   w  w w  . ja  va  2s  . com*/
    if (bitmap != null) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        Matrix matrix = new Matrix();
        float scaleWidht = ((float) w / width);
        float scaleHeight = ((float) h / height);
        matrix.postScale(scaleWidht, scaleHeight);
        try {
            newbmp = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
        } catch (Exception e) {
            newbmp = bitmap;
        }
    }
    return newbmp;
}

From source file:Main.java

/**
 * Rotate the image//from   www .ja  v  a2 s. c om
 * @param bm source bitmap
 * @param rotation degree of rotation
 * @return return the rotated bitmap
 */
public static Bitmap rotateImage(Bitmap bm, int rotation) {
    Matrix matrix = new Matrix();
    matrix.postRotate(rotation);
    return Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), matrix, true);
}