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

/**
 * scale image/*from ww  w.  j  a v  a2  s  . c  om*/
 *
 * @param org
 * @param scaleWidth  sacle of width
 * @param scaleHeight scale of height
 * @return
 */
public static Bitmap scaleImage(Bitmap org, float scaleWidth, float scaleHeight) {
    if (org == null) {
        return null;
    }
    Matrix matrix = new Matrix();
    matrix.postScale(scaleWidth, scaleHeight);
    return Bitmap.createBitmap(org, 0, 0, org.getWidth(), org.getHeight(), matrix, true);
}

From source file:Main.java

public static Bitmap scaleImage(Bitmap bitmap, int destW, int destH) {
    if (bitmap == null) {
        return null;
    }/*from www .jav a  2 s .c  o  m*/
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();

    float scaleWidth = ((float) destW) / width;
    float scaleHeight = ((float) destH) / height;

    Matrix matrix = new Matrix();
    matrix.postScale(scaleWidth, scaleHeight);
    Bitmap scaledBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
    return scaledBitmap;
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, float scale) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Log.e("ss", "width=" + width);
    Log.e("ss", "height=" + height);
    Matrix matrix = new Matrix();
    //float scaleWidht = ((float)w / width);
    //float scaleHeight = ((float)h / height);
    matrix.postScale(scale, scale);/*from  w  w w . ja  va2 s  . com*/
    Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
    return newbmp;
}

From source file:Main.java

public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) {
    int w = bitmap.getWidth();
    int h = bitmap.getHeight();
    Bitmap newbmp;//from www. java 2s .  c  o m
    try {
        // if (h >= w) {
        // if (height <= h) {
        Matrix matrix = new Matrix();
        float scaleHeight = ((float) height / h);
        matrix.postScale(scaleHeight, scaleHeight);
        newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
        return newbmp;
        // }
        // } else {
        // if (width <= w) {
        // Matrix matrix = new Matrix();
        // float scaleWidth = ((float) width / w);
        // matrix.postScale(scaleWidth, scaleWidth);
        // newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix,
        // true);
        // return newbmp;
        // }
        // }
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static Bitmap scaleImg(Bitmap bm, int newWidth, int newHeight) {

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

    int newWidth1 = newWidth;
    int newHeight1 = newHeight;

    float scaleWidth = ((float) newWidth1) / width;
    float scaleHeight = ((float) newHeight1) / height;

    Matrix matrix = new Matrix();
    matrix.postScale(scaleWidth, scaleHeight);

    Bitmap newbm = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, true);
    return newbm;

}

From source file:Main.java

/**
 * For rotating images/*from w w w .j a v a2 s .  co  m*/
 * @param bitmap Bitmap to rotate
 * @param degree Degree amount to rotate
 * @return
 */
public static Bitmap rotate(Bitmap bitmap, int degree) {
    if (bitmap == null) {
        return null;
    }
    int w = bitmap.getWidth();
    int h = bitmap.getHeight();

    Matrix mtx = new Matrix();
    mtx.setRotate(degree);

    return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
}

From source file:Main.java

public static Bitmap scaleBitmap(Bitmap bitmap, int reW, int reH) {
    if (bitmap == null) {
        return null;
    }//from w  w  w. j av  a 2 s . c  o  m
    int bmpW = bitmap.getWidth();
    int bmpH = bitmap.getHeight();
    float wScale = reW * 1.0f / bmpW;
    float hScale = reH * 1.0f / bmpH;
    float scale = Math.max(wScale, hScale);
    Matrix matrix = new Matrix();
    matrix.setScale(scale, scale);
    return Bitmap.createBitmap(bitmap, 0, 0, bmpW, bmpH, matrix, true);
}

From source file:Main.java

public static Bitmap rotateBitmap(Bitmap bm, int direction) {
    Bitmap returnBm;//from   w  w w. j a  va  2s  . com
    int w = bm.getWidth();
    int h = bm.getHeight();

    Matrix matrix = new Matrix();
    if (direction == ROTATE_LEFT) {
        matrix.postRotate(-90);
    } else if (direction == ROTATE_RIGHT) {
        matrix.postRotate(90);
    }

    returnBm = Bitmap.createBitmap(bm, 0, 0, w, h, matrix, true);

    if (bm != returnBm) {
        bm.recycle();
    }

    return returnBm;
}

From source file:Main.java

/**
 * Shrink the bitmap to the specified scale.
 *
 * @param bitmap to shrink./*  w  w w  .j  ava2s  . c  o  m*/
 * @param scale  the shrink scale, must be < 1.0.
 * @return the shrunk bitmap.
 */
public static Bitmap shrink(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 resizeImageByWidth(Bitmap defaultBitmap, int targetWidth) {
    int rawWidth = defaultBitmap.getWidth();
    int rawHeight = defaultBitmap.getHeight();
    float targetHeight = targetWidth * (float) rawHeight / (float) rawWidth;
    float scaleWidth = targetWidth / (float) rawWidth;
    float scaleHeight = targetHeight / (float) rawHeight;
    Matrix localMatrix = new Matrix();
    localMatrix.postScale(scaleHeight, scaleWidth);
    return Bitmap.createBitmap(defaultBitmap, 0, 0, rawWidth, rawHeight, localMatrix, true);
}