Android Utililty Methods Bitmap Scale

List of utility methods to do Bitmap Scale

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Description

The list of methods to do Bitmap Scale are organized into topic(s).

Method

BitmapcrossStretchImageX(Bitmap image, int xsize)
stretches the middle section of the image on the X axis to avoid the borders looking stretched 
Bitmap cutout = Bitmap.createBitmap((image.getWidth() / 3),
        image.getHeight(), image.getConfig());
Canvas cutoutc = new Canvas(cutout);
Bitmap temp = Bitmap.createBitmap(xsize, image.getHeight(),
        image.getConfig());
Canvas tempc = new Canvas(temp);
cutoutc.drawBitmap(image,
        new Rect(image.getWidth() / 3, 0,
...
BitmapscaleBitmap(Bitmap bitmap, int width, int height)
scale Bitmap 
long start = System.currentTimeMillis();
if (bitmap == null) {
    return null;
int newWidth = width;
int newHeight = height;
if (newHeight == 0) {
    newHeight = (int) (newWidth / (float) bitmap.getWidth() * bitmap
...
BitmapscaleBitmap(String path, int newWidth, int newHeight)
scale Bitmap 
Bitmap bm = BitmapFactory.decodeFile(path);
int width = bm.getWidth();
int height = bm.getHeight();
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleHeight);
Bitmap newbm = Bitmap.createBitmap(bm, 0, 0, width, height, matrix,
...
BitmapscaleClipBitmapByCircle(Bitmap src, int nRadius, float fStrokeWidth)
scale Clip Bitmap By Circle 
if (null != src) {
    Bitmap maskMap = Bitmap.createBitmap(nRadius << 1,
            nRadius << 1, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(maskMap);
    canvas.drawARGB(0, 0, 0, 0);
    Paint ptDrawCircle = new Paint();
    ptDrawCircle.setColor(Color.BLACK);
    ptDrawCircle.setStyle(Style.FILL);
...
BitmapgetScaledImageFromUri(Activity activity, Uri uri, int size)
get Scaled Image From Uri 
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = size;
String imagePath = getRealPathFromURI(activity, uri);
if (imagePath != null) {
    Bitmap bitmapImage = BitmapFactory.decodeFile(imagePath,
            options);
    return bitmapImage;
} else {
...
BitmapimageScale(Bitmap bitmap, int dst_w, int dst_h)
image Scale 
int src_w = bitmap.getWidth();
int src_h = bitmap.getHeight();
float scale_w = ((float) dst_w) / src_w;
float scale_h = ((float) dst_h) / src_h;
Matrix matrix = new Matrix();
matrix.postScale(scale_w, scale_h);
Bitmap dstbmp = Bitmap.createBitmap(bitmap, 0, 0, src_w, src_h,
        matrix, true);
...
BitmapscaleBitmap(Bitmap bitmap, float scale)
scale Bitmap 
int width = bitmap.getWidth();
int height = bitmap.getHeight();
Matrix matrix = new Matrix();
matrix.postScale(scale, scale);
Bitmap newBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height,
        matrix, true);
return newBitmap;
BitmapscaleBitmapDown(Bitmap bitmap)
Scale down the bitmap in order to make color analysis faster. 
final int CALCULATE_BITMAP_MIN_DIMENSION = 100;
final int minDimension = Math.min(bitmap.getWidth(),
        bitmap.getHeight());
if (minDimension <= CALCULATE_BITMAP_MIN_DIMENSION) {
    return bitmap;
final float scaleRatio = CALCULATE_BITMAP_MIN_DIMENSION
        / (float) minDimension;
...
BitmapscaleToFit(Bitmap bm, float width_Ratio, float height_Ratio)
scale To Fit 
int width = bm.getWidth();
int height = bm.getHeight();
Matrix matrix = new Matrix();
matrix.postScale((float) width_Ratio, (float) height_Ratio);
Bitmap bmResult = Bitmap.createBitmap(bm, 0, 0, width, height,
        matrix, true);
return bmResult;
BitmapstretchImage(Bitmap image, float xscale, float yscale)
Stretches Bitmap to a scale in each direction. 
Bitmap data = Bitmap.createBitmap(
        (int) (image.getWidth() * xscale),
        (int) (image.getHeight() * yscale), image.getConfig());
Canvas canvas = new Canvas(data);
canvas.drawBitmap(image,
        new Rect(0, 0, image.getWidth(), image.getHeight()),
        new Rect(0, 0, (int) (image.getWidth() * xscale),
                (int) (image.getHeight() * yscale)), null);
...