Example usage for android.graphics Bitmap createScaledBitmap

Introduction

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

Prototype

public static Bitmap createScaledBitmap(@NonNull Bitmap src, int dstWidth, int dstHeight, boolean filter)

Source Link

Document

Creates a new bitmap, scaled from an existing bitmap, when possible.

Usage

From source file:Main.java

public static Drawable resizeDrawable(Context context, Drawable drawable, int width, int height) {
    Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
    Drawable newDrawable = new BitmapDrawable(context.getResources(),
            Bitmap.createScaledBitmap(bitmap, width, height, true));

    return newDrawable;
}

From source file:Main.java

public static Bitmap createScaledToCenterInsideBitmap(Bitmap bitmap, int reqWidth, int reqHeight) {
    final int height = bitmap.getHeight();
    final int width = bitmap.getWidth();

    float widthScaleF = (float) width / (float) reqWidth;
    float heightScaleF = (float) height / (float) reqHeight;
    if (widthScaleF > heightScaleF) {
        return Bitmap.createScaledBitmap(bitmap, reqWidth, (int) (height / widthScaleF), true);
    } else {/*from  w w  w . j a  v a  2 s  .  c o m*/
        return Bitmap.createScaledBitmap(bitmap, (int) (width / heightScaleF), reqHeight, true);
    }
}

From source file:Main.java

public static Bitmap getHistogram(Bitmap bmpOriginal) {

    //Scale bmpOriginal to improve performance 
    final int dstWidth = 200;
    int dstHeight = dstWidth * bmpOriginal.getHeight() / bmpOriginal.getWidth();
    Bitmap bmpScaled = Bitmap.createScaledBitmap(bmpOriginal, dstWidth, dstHeight, false);
    int[] histogramValues = new int[256];

    int[] pixels = new int[dstWidth];
    int pxBrightness;
    for (int row = 0; row < dstHeight; row++) {
        bmpScaled.getPixels(pixels, 0, dstWidth, 0, row, dstWidth, 1);
        for (int col = 0; col < dstWidth; col++) {
            pxBrightness = rgbToGray(pixels[col]);
            histogramValues[pxBrightness]++;
        }// w w w . j  av  a 2s.c  o m
    }
    bmpScaled.recycle();

    int histogramMax = max(histogramValues);
    Bitmap bmpHistogram = Bitmap.createBitmap(256, histogramMax, Config.ARGB_8888);
    Canvas canvas = new Canvas(bmpHistogram);
    Paint paint = new Paint();
    paint.setColor(Color.CYAN);

    for (int i = 0; i < 256; i++)
        canvas.drawLine(i, histogramMax - histogramValues[i], i, histogramMax, paint);

    return bmpHistogram;
}

From source file:Main.java

public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) {

    Bitmap sbmp;/*from   ww w  . j a  va  2 s. c  o  m*/
    if (bmp.getWidth() != radius || bmp.getHeight() != radius)
        sbmp = Bitmap.createScaledBitmap(bmp, radius, radius, false);
    else
        sbmp = bmp;
    Bitmap output = Bitmap.createBitmap(sbmp.getWidth(), sbmp.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(output);
    //final int color = 0xffa19774;
    final Paint paint = new Paint();
    final Rect rect = new Rect(0, 0, sbmp.getWidth(), sbmp.getHeight());
    paint.setAntiAlias(true);
    paint.setFilterBitmap(true);
    paint.setDither(true);
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(Color.parseColor("#BAB399"));
    canvas.drawCircle(sbmp.getWidth() / 2 + 0.7f, sbmp.getHeight() / 2 + 0.7f, sbmp.getWidth() / 2 + 0.1f,
            paint);
    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
    canvas.drawBitmap(sbmp, rect, rect, paint);
    return output;
}

From source file:Main.java

public static Bitmap extractBitmap(Bitmap source, float scale) {
    if (null == source) {
        return null;
    }//from  ww w.j a v  a2 s. c o m
    Bitmap dest = Bitmap.createScaledBitmap(source, (int) (source.getWidth() * scale),
            (int) (source.getHeight() * scale), false);
    recycle(source);
    return dest;
}

From source file:Main.java

/**
 * Converts the supplied byte[] to a Bitmap at 75% compression
 *
 * @param bytes the bitmap's bytes/*ww w .  j a va  2s  .co  m*/
 * @return the Bitmap
 */
public static synchronized Bitmap asBitmap(byte[] bytes) {
    Bitmap bmp = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
    return Bitmap.createScaledBitmap(bmp, bmp.getWidth() / 4, bmp.getHeight() / 4, true);
}

From source file:Main.java

public static Bitmap scaleToStretchBitmap(Bitmap dst, byte[] byImage) {
    Bitmap src = BitmapFactory.decodeByteArray(byImage, 0, byImage.length);

    return Bitmap.createScaledBitmap(src, dst.getWidth(), dst.getHeight(), true);
}

From source file:Main.java

public static Bitmap resizeBitmap(Bitmap image, int maxSize) {
    int width = image.getWidth();
    int height = image.getHeight();
    float aspectRatio = width / (float) height;

    if (aspectRatio > 1) {
        width = maxSize;//  ww  w.  ja  v a2  s  . c o m
        height = Math.round(width / aspectRatio);
    } else {
        height = maxSize;
        width = Math.round(height * aspectRatio);
    }

    return Bitmap.createScaledBitmap(image, width, height, true);
}

From source file:Main.java

/**
 * Create rounded corner bitmap.//ww  w.  ja  va2  s  . co m
 *
 * @param bitmap bitmap.
 * @return rounded bitmap.
 */
public static Bitmap getRoundedCornerBitmap(Bitmap bitmap) {
    Bitmap source = Bitmap.createScaledBitmap(bitmap, 480, 480, false);
    Bitmap output = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

    final int color = 0xff424242;
    final Paint paint = new Paint();
    final Rect rect = new Rect(0, 0, source.getWidth(), source.getHeight());
    final RectF rectF = new RectF(rect);
    final float roundPx = source.getWidth();

    paint.setAntiAlias(true);
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(color);
    canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));

    canvas.drawBitmap(source, rect, rect, paint);

    return output;
}

From source file:Main.java

public static void changeImageButton(Context context, ImageButton button, int resId, int width, int height) {
    Drawable icon;//from   w  w  w .  j av  a2  s  .  c om
    icon = context.getResources().getDrawable(resId);
    icon.setBounds(0, 0, width, height);
    Bitmap iconBitmap = ((BitmapDrawable) icon).getBitmap();
    Bitmap bitmapResized = Bitmap.createScaledBitmap(iconBitmap, width, height, false);
    button.setImageBitmap(bitmapResized);

}