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 Bitmap resizeBitmap(Bitmap original, int width, int height) {
    return Bitmap.createScaledBitmap(original, width, height, false);
}

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From source file:Main.java

/**
 * Draw the favicon with dominant color.
 * @param context Context used to create the intent.
 * @param favicon favicon bitmap./* ww  w. j a  va 2 s.co  m*/
 * @param canvas Canvas that holds the favicon.
 */
private static void drawFaviconToCanvas(Context context, Bitmap favicon, Canvas canvas) {
    Rect iconBounds = new Rect(0, 0, canvas.getWidth(), canvas.getHeight());
    int faviconSize = iconBounds.width() / 3;
    Bitmap scaledFavicon = Bitmap.createScaledBitmap(favicon, faviconSize, faviconSize, true);
    canvas.drawBitmap(scaledFavicon, iconBounds.exactCenterX() - scaledFavicon.getWidth() / 2.0f,
            iconBounds.exactCenterY() - scaledFavicon.getHeight() / 2.0f, null);
}

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From source file:Main.java

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Bitmap blurBitmap(Bitmap bitmap, Context context) {
    int width = bitmap.getWidth(), height = bitmap.getHeight();
    Bitmap b = Bitmap.createScaledBitmap(
            Bitmap.createScaledBitmap(bitmap, (int) (width / SCALE_RATIO), (int) (height / SCALE_RATIO), false),
            width, height, false);/*from  ww w  . j a v  a2s  .  c  o m*/
    return blurBitmap(b, DEFAULT_BLUR_RADIUS, context);
}

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From source file:Main.java

public static Bitmap fastblur(Bitmap sentBitmap, int radius) {
    int width = Math.round(sentBitmap.getWidth());
    int height = Math.round(sentBitmap.getHeight());
    sentBitmap = Bitmap.createScaledBitmap(sentBitmap, width, height, false);

    Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);

    if (radius < 1) {
        return (null);
    }//from www  .  j  ava2  s. com

    int w = bitmap.getWidth();
    int h = bitmap.getHeight();

    int[] pix = new int[w * h];
    bitmap.getPixels(pix, 0, w, 0, 0, w, h);

    int wm = w - 1;
    int hm = h - 1;
    int wh = w * h;
    int div = radius + radius + 1;

    int r[] = new int[wh];
    int g[] = new int[wh];
    int b[] = new int[wh];
    int a[] = new int[wh];
    int rsum, gsum, bsum, asum, x, y, i, p, yp, yi, yw;
    int vmin[] = new int[Math.max(w, h)];

    int divsum = (div + 1) >> 1;
    divsum *= divsum;
    int dv[] = new int[256 * divsum];
    for (i = 0; i < 256 * divsum; i++) {
        dv[i] = (i / divsum);
    }

    yw = yi = 0;

    int[][] stack = new int[div][4];
    int stackpointer;
    int stackstart;
    int[] sir;
    int rbs;
    int r1 = radius + 1;
    int routsum, goutsum, boutsum, aoutsum;
    int rinsum, ginsum, binsum, ainsum;

    for (y = 0; y < h; y++) {
        rinsum = ginsum = binsum = ainsum = routsum = goutsum = boutsum = aoutsum = rsum = gsum = bsum = asum = 0;
        for (i = -radius; i <= radius; i++) {
            p = pix[yi + Math.min(wm, Math.max(i, 0))];
            sir = stack[i + radius];
            sir[0] = (p & 0xff0000) >> 16;
            sir[1] = (p & 0x00ff00) >> 8;
            sir[2] = (p & 0x0000ff);
            sir[3] = 0xff & (p >> 24);

            rbs = r1 - Math.abs(i);
            rsum += sir[0] * rbs;
            gsum += sir[1] * rbs;
            bsum += sir[2] * rbs;
            asum += sir[3] * rbs;
            if (i > 0) {
                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];
                ainsum += sir[3];
            } else {
                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];
                aoutsum += sir[3];
            }
        }
        stackpointer = radius;

        for (x = 0; x < w; x++) {

            r[yi] = dv[rsum];
            g[yi] = dv[gsum];
            b[yi] = dv[bsum];
            a[yi] = dv[asum];

            rsum -= routsum;
            gsum -= goutsum;
            bsum -= boutsum;
            asum -= aoutsum;

            stackstart = stackpointer - radius + div;
            sir = stack[stackstart % div];

            routsum -= sir[0];
            goutsum -= sir[1];
            boutsum -= sir[2];
            aoutsum -= sir[3];

            if (y == 0) {
                vmin[x] = Math.min(x + radius + 1, wm);
            }
            p = pix[yw + vmin[x]];

            sir[0] = (p & 0xff0000) >> 16;
            sir[1] = (p & 0x00ff00) >> 8;
            sir[2] = (p & 0x0000ff);
            sir[3] = 0xff & (p >> 24);

            rinsum += sir[0];
            ginsum += sir[1];
            binsum += sir[2];
            ainsum += sir[3];

            rsum += rinsum;
            gsum += ginsum;
            bsum += binsum;
            asum += ainsum;

            stackpointer = (stackpointer + 1) % div;
            sir = stack[(stackpointer) % div];

            routsum += sir[0];
            goutsum += sir[1];
            boutsum += sir[2];
            aoutsum += sir[3];

            rinsum -= sir[0];
            ginsum -= sir[1];
            binsum -= sir[2];
            ainsum -= sir[3];

            yi++;
        }
        yw += w;
    }
    for (x = 0; x < w; x++) {
        rinsum = ginsum = binsum = ainsum = routsum = goutsum = boutsum = aoutsum = rsum = gsum = bsum = asum = 0;
        yp = -radius * w;
        for (i = -radius; i <= radius; i++) {
            yi = Math.max(0, yp) + x;

            sir = stack[i + radius];

            sir[0] = r[yi];
            sir[1] = g[yi];
            sir[2] = b[yi];
            sir[3] = a[yi];

            rbs = r1 - Math.abs(i);

            rsum += r[yi] * rbs;
            gsum += g[yi] * rbs;
            bsum += b[yi] * rbs;
            asum += a[yi] * rbs;

            if (i > 0) {
                rinsum += sir[0];
                ginsum += sir[1];
                binsum += sir[2];
                ainsum += sir[3];
            } else {
                routsum += sir[0];
                goutsum += sir[1];
                boutsum += sir[2];
                aoutsum += sir[3];
            }

            if (i < hm) {
                yp += w;
            }
        }
        yi = x;
        stackpointer = radius;
        for (y = 0; y < h; y++) {
            pix[yi] = (dv[asum] << 24) | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum];

            rsum -= routsum;
            gsum -= goutsum;
            bsum -= boutsum;
            asum -= aoutsum;

            stackstart = stackpointer - radius + div;
            sir = stack[stackstart % div];

            routsum -= sir[0];
            goutsum -= sir[1];
            boutsum -= sir[2];
            aoutsum -= sir[3];

            if (x == 0) {
                vmin[y] = Math.min(y + r1, hm) * w;
            }
            p = x + vmin[y];

            sir[0] = r[p];
            sir[1] = g[p];
            sir[2] = b[p];
            sir[3] = a[p];

            rinsum += sir[0];
            ginsum += sir[1];
            binsum += sir[2];
            ainsum += sir[3];

            rsum += rinsum;
            gsum += ginsum;
            bsum += binsum;
            asum += ainsum;

            stackpointer = (stackpointer + 1) % div;
            sir = stack[stackpointer];

            routsum += sir[0];
            goutsum += sir[1];
            boutsum += sir[2];
            aoutsum += sir[3];

            rinsum -= sir[0];
            ginsum -= sir[1];
            binsum -= sir[2];
            ainsum -= sir[3];

            yi += w;
        }
    }
    bitmap.setPixels(pix, 0, w, 0, 0, w, h);
    return (bitmap);
}

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From source file:Main.java

/** Returns a scaled version of the given Bitmap. One of the returned Bitmap's width and height will be equal to size, and the other
 * dimension will be equal or less.//from w w w .  j av  a 2 s .  co m
 */
public static Bitmap createScaledBitmap(Bitmap bitmap, int size) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    int scaledWidth = size, scaledHeight = size;
    if (height < width) {
        scaledHeight = (int) (size * 1.0f * height / width);
    } else if (width < height) {
        scaledWidth = (int) (size * 1.0f * width / height);
    }
    Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap, scaledWidth, scaledHeight, false);
    return scaledBitmap;
}

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From source file:Main.java

public static Bitmap scaleBitmap(Bitmap srcBmp, int iWidth, int iHeight) {
    float fWidth = srcBmp.getWidth();
    float fHeight = srcBmp.getHeight();

    if (fWidth > iWidth) {
        float mWidth = (float) (fWidth / 100);
        float fScale = (float) (iWidth / mWidth);
        fWidth *= (fScale / 100);//ww w . jav  a2  s.c  o m
        fHeight *= (fScale / 100);
    } else if (fHeight > iHeight) {
        float mHeight = (float) (fHeight / 100);
        float fScale = (float) (iHeight / mHeight);
        fWidth *= (fScale / 100);
        fHeight *= (fScale / 100);
    }
    return Bitmap.createScaledBitmap(srcBmp, (int) fWidth, (int) fHeight, true);
}

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From source file:Main.java

/**
 * Scale down the bitmap in order to make color analysis faster. Taken from Palette.
 */// w  w  w .j  a v  a  2s  .com
private static Bitmap scaleBitmapDown(@NonNull Bitmap bitmap) {
    final int CALCULATE_BITMAP_MIN_DIMENSION = 100;
    final int minDimension = Math.min(bitmap.getWidth(), bitmap.getHeight());

    if (minDimension <= CALCULATE_BITMAP_MIN_DIMENSION) {
        // If the bitmap is small enough already, just return it
        return bitmap;
    }

    final float scaleRatio = CALCULATE_BITMAP_MIN_DIMENSION / (float) minDimension;
    return Bitmap.createScaledBitmap(bitmap, Math.round(bitmap.getWidth() * scaleRatio),
            Math.round(bitmap.getHeight() * scaleRatio), false);
}

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From source file:Main.java

public static Bitmap resize(Bitmap src, int max, boolean isKeep) {
    if (!isKeep)/*from   ww  w. j a  v a2s  .co m*/
        return resizeBitmap(src, max);

    int width = src.getWidth();
    int height = src.getHeight();
    float rate = 0.0f;

    if (width > height) {
        if (max > width) {
            rate = max / (float) width;
            height = (int) (height * rate);
            width = max;
        }
    } else {
        if (max > height) {
            rate = max / (float) height;
            width = (int) (width * rate);
            height = max;
        }
    }

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

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From source file:Main.java

public static Bitmap resizeImage(Bitmap image, int maxWidth, int maxHeight) {
    Log.d(TAG, "[AirImagePickerUtils] Entering resizeImage: " + String.valueOf(maxWidth) + " x "
            + String.valueOf(maxHeight));
    Bitmap result = image;//  www . j  a v a  2  s.c om
    // make sure that the image has the correct height
    if (image.getWidth() > maxWidth || image.getHeight() > maxHeight && maxWidth != -1 && maxHeight != -1) {
        float reductionFactor = Math.max(Float.valueOf(image.getWidth()) / maxWidth,
                Float.valueOf(image.getHeight()) / maxHeight);

        result = Bitmap.createScaledBitmap(image, (int) (image.getWidth() / reductionFactor),
                (int) (image.getHeight() / reductionFactor), true);
        Log.d(TAG, "[AirImagePickerUtils] resized image to: " + String.valueOf(result.getWidth()) + " x "
                + String.valueOf(result.getHeight()));
    }
    Log.d(TAG, "[AirImagePickerUtils] Exiting resizeImage");
    return result;
}

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From source file:Main.java

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
public static Bitmap blur(Context context, Bitmap image) {
    int width = Math.round(image.getWidth() * BITMAP_SCALE);
    int height = Math.round(image.getHeight() * BITMAP_SCALE);

    Bitmap inputBitmap = Bitmap.createScaledBitmap(image, width, height, false);
    Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);

    RenderScript rs = RenderScript.create(context);
    ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
    Allocation tmpIn = Allocation.createFromBitmap(rs, inputBitmap);
    Allocation tmpOut = Allocation.createFromBitmap(rs, outputBitmap);
    theIntrinsic.setRadius(BLUR_RADIUS);
    theIntrinsic.setInput(tmpIn);//from  w w w .  j av  a2  s  .co m
    theIntrinsic.forEach(tmpOut);
    tmpOut.copyTo(outputBitmap);

    return outputBitmap;
}

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