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 scaleAndFrame(Bitmap bitmap, int width, int height) {
    final int bitmapWidth = bitmap.getWidth();
    final int bitmapHeight = bitmap.getHeight();

    final float scale = Math.min((float) width / (float) bitmapWidth, (float) height / (float) bitmapHeight);

    final int scaledWidth = (int) (bitmapWidth * scale);
    final int scaledHeight = (int) (bitmapHeight * scale);

    final Bitmap decored = Bitmap.createScaledBitmap(bitmap, scaledWidth, scaledHeight, true);
    final Canvas canvas = new Canvas(decored);

    final int offset = (int) (PHOTO_BORDER_WIDTH / 2);
    sStrokePaint.setAntiAlias(false);/*from   w ww.j a  va  2 s .  co  m*/
    canvas.drawRect(offset, offset, scaledWidth - offset - 1, scaledHeight - offset - 1, sStrokePaint);
    sStrokePaint.setAntiAlias(true);

    return decored;

}

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From source file:Main.java

public static Bitmap load_bitmap_from_uri_string(Context context, String uri, int sizeX, int sizeY) {
    Bitmap small_bitmap = null;/*from   w  w  w  .  ja  v a 2  s  . c  om*/

    Uri img_uri = Uri.parse(uri);
    if (uri != null) {
        try {

            InputStream inputStream = context.getContentResolver().openInputStream(img_uri);
            Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
            small_bitmap = Bitmap.createScaledBitmap(bitmap, sizeX, sizeY, false);
            bitmap.recycle();

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }

    return small_bitmap;
}

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From source file:Main.java

public static Bitmap getCroppedRoundBitmap(Bitmap bmp, int radius) {
    Bitmap scaledSrcBmp;/*from  w ww .ja  va2  s  .co m*/
    int diameter = radius * 2;
    int bmpWidth = bmp.getWidth();
    int bmpHeight = bmp.getHeight();
    int squareWidth = 0, squareHeight = 0;
    int x = 0, y = 0;
    Bitmap squareBitmap;
    if (bmpHeight > bmpWidth) {
        squareWidth = squareHeight = bmpWidth;
        x = 0;
        y = (bmpHeight - bmpWidth) / 2;
        squareBitmap = Bitmap.createBitmap(bmp, x, y, squareWidth, squareHeight);
    } else if (bmpHeight < bmpWidth) {
        squareWidth = squareHeight = bmpHeight;
        x = (bmpWidth - bmpHeight) / 2;
        y = 0;
        squareBitmap = Bitmap.createBitmap(bmp, x, y, squareWidth, squareHeight);
    } else {
        squareBitmap = bmp;
    }

    if (squareBitmap.getWidth() != diameter || squareBitmap.getHeight() != diameter) {
        scaledSrcBmp = Bitmap.createScaledBitmap(squareBitmap, diameter, diameter, true);

    } else {
        scaledSrcBmp = squareBitmap;
    }
    Bitmap output = Bitmap.createBitmap(scaledSrcBmp.getWidth(), scaledSrcBmp.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

    Paint paint = new Paint();
    Rect rect = new Rect(0, 0, scaledSrcBmp.getWidth(), scaledSrcBmp.getHeight());

    paint.setAntiAlias(true);
    paint.setFilterBitmap(true);
    paint.setDither(true);
    canvas.drawARGB(0, 0, 0, 0);
    canvas.drawCircle(scaledSrcBmp.getWidth() / 2, scaledSrcBmp.getHeight() / 2, scaledSrcBmp.getWidth() / 2,
            paint);
    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
    canvas.drawBitmap(scaledSrcBmp, rect, rect, paint);
    return output;
}

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From source file:Main.java

public static Bitmap getScaledBitmapFromBitmap(Bitmap bmp, int maxWidth, int maxHeight, boolean keepAspectRatio,
        boolean freeOldBitmap) {
    if (keepAspectRatio) {
        float ratio = bmp.getWidth() == 0 ? 1.f : (bmp.getWidth() / (float) bmp.getHeight());
        float newRatio = maxHeight == 0 ? 1.f : (maxWidth / (float) maxHeight);

        if (newRatio > ratio) {
            maxWidth = (int) ((float) maxHeight * ratio);
        } else if (newRatio < ratio) {
            maxHeight = (int) ((float) maxWidth / ratio);
        }/*from   www  . j  a va  2s  .  c  om*/
    }

    Bitmap scaled = Bitmap.createScaledBitmap(bmp, maxWidth, maxHeight, true);

    if (freeOldBitmap && scaled != bmp) {
        bmp.recycle();
    }

    return scaled;
}

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From source file:Main.java

public static Bitmap compressPixel1(String imgPath, float pixelW, float pixelH) {
    BitmapFactory.Options newOpts = new BitmapFactory.Options();
    newOpts.inJustDecodeBounds = true;/*from  w  ww.j  av a 2 s  .  c om*/
    newOpts.inPreferredConfig = Config.RGB_565;
    Bitmap bitmap = BitmapFactory.decodeFile(imgPath, newOpts);
    newOpts.inJustDecodeBounds = false;
    int w = newOpts.outWidth;
    int h = newOpts.outHeight;
    float hh = pixelH;
    float ww = pixelW;
    int height = h;
    int width = w;
    int inSampleSize = 1;
    if (h > hh || w > ww) {
        final int halfHeight = h / 2;
        final int halfWidth = w / 2;
        while ((halfHeight / inSampleSize) > hh && (halfWidth / inSampleSize) > ww) {
            inSampleSize *= 2;
        }

        if (h > w) {
            height = 1280;
            width = (1280 * w) / h;
        } else {
            width = 1280;
            height = (1280 * h) / w;
        }
    }
    newOpts.inSampleSize = inSampleSize;
    bitmap = BitmapFactory.decodeFile(imgPath, newOpts);

    Bitmap dst = Bitmap.createScaledBitmap(bitmap, width, height, false);
    if (bitmap != dst) {
        bitmap.recycle();
    }

    return dst;
}

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From source file:Main.java

public static Drawable load_drawable_from_uri_string(Context context, String uri, int sizeX, int sizeY) {
    Drawable drawable = null;/* w  ww.ja  v a2 s .co m*/
    Uri img_uri = Uri.parse(uri);
    if (uri != null) {
        try {

            InputStream inputStream = context.getContentResolver().openInputStream(img_uri);
            Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
            Bitmap small_bitmap = Bitmap.createScaledBitmap(bitmap, sizeX, sizeY, false);
            bitmap.recycle();
            drawable = new BitmapDrawable(context.getResources(), small_bitmap);

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
    return drawable;
}

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From source file:Main.java

public static Bitmap resize(Bitmap bMap) {
    if ((float) bMap.getHeight() / (float) bMap.getWidth() == .5625
            || (float) bMap.getWidth() / (float) bMap.getHeight() == .5625) { //16/9
        if (bMap.getHeight() < bMap.getWidth()) {
            //bMap = Bitmap.createScaledBitmap(bMap, 1024, 576, false);
            bMap = Bitmap.createScaledBitmap(bMap, 1280, 720, false); //720p
        } else {//w ww  . jav a2s  . c o m
            //bMap = Bitmap.createScaledBitmap(bMap, 576, 1024, false);
            bMap = Bitmap.createScaledBitmap(bMap, 720, 1280, false); //720p
        }
    } else if ((float) bMap.getHeight() / (float) bMap.getWidth() == .625
            || (float) bMap.getWidth() / (float) bMap.getHeight() == .625) { //16/10
        if (bMap.getHeight() < bMap.getWidth()) {
            //bMap = Bitmap.createScaledBitmap(bMap, 960, 600, false);
            bMap = Bitmap.createScaledBitmap(bMap, 1152, 720, false); //720p
        } else {
            //bMap = Bitmap.createScaledBitmap(bMap, 600, 960, false);
            bMap = Bitmap.createScaledBitmap(bMap, 720, 1152, false); //720p
        }
    } else if ((float) bMap.getHeight() / (float) bMap.getWidth() == .75
            || (float) bMap.getWidth() / (float) bMap.getHeight() == .75) { //4/3
        if (bMap.getHeight() < bMap.getWidth()) {
            bMap = Bitmap.createScaledBitmap(bMap, 960, 720, false);
        } else {
            bMap = Bitmap.createScaledBitmap(bMap, 720, 960, false);
        }
    }
    return bMap;
}

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From source file:gowtham.com.desknote.MyListener.java

private String bitmap2Base64(Bitmap b) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    //Bitmap gray = toGrayscale(b);
    // Windows needs atleast 48x48 image, otherwise, notification is not shown
    Bitmap smaller = b.createScaledBitmap(b, 48, 48, false);
    // PNG is lossless. So, quality setting is unused
    smaller.compress(Bitmap.CompressFormat.PNG, 100, baos);
    byte[] buf = baos.toByteArray();
    return new String(Base64.encode(buf, Base64.NO_WRAP));
}

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From source file:Main.java

private static float[] getMainHSV(Bitmap bm) {
    Bitmap onePixelBitmap = Bitmap.createScaledBitmap(bm, 1, 1, true);
    int pixel = onePixelBitmap.getPixel(0, 0);

    int red = Color.red(pixel);
    int blue = Color.blue(pixel);
    int green = Color.green(pixel);

    float[] hsvVals = new float[3];
    Color.RGBToHSV(red, green, blue, hsvVals);
    return hsvVals;
}

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From source file:Main.java

public static Bitmap cropMaxVisibleBitmap(Drawable drawable, int iconSize) {
    Bitmap tmp = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),
            Bitmap.Config.ARGB_8888);//from   ww w .j a  va 2s  . c o  m
    Canvas canvas = new Canvas(tmp);
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    drawable.draw(canvas);

    Rect crop = new Rect(tmp.getWidth(), tmp.getHeight(), -1, -1);
    for (int y = 0; y < tmp.getHeight(); y++) {
        for (int x = 0; x < tmp.getWidth(); x++) {
            int alpha = (tmp.getPixel(x, y) >> 24) & 255;
            if (alpha > 0) { // pixel is not 100% transparent
                if (x < crop.left)
                    crop.left = x;
                if (x > crop.right)
                    crop.right = x;
                if (y < crop.top)
                    crop.top = y;
                if (y > crop.bottom)
                    crop.bottom = y;
            }
        }
    }

    if (crop.width() <= 0 || crop.height() <= 0) {
        return Bitmap.createScaledBitmap(tmp, iconSize, iconSize, true);
    }

    // We want to crop a square region.
    float size = Math.max(crop.width(), crop.height());
    float xShift = (size - crop.width()) * 0.5f;
    crop.left -= Math.floor(xShift);
    crop.right += Math.ceil(xShift);

    float yShift = (size - crop.height()) * 0.5f;
    crop.top -= Math.floor(yShift);
    crop.bottom += Math.ceil(yShift);

    Bitmap finalImage = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888);
    canvas.setBitmap(finalImage);
    float scale = iconSize / size;

    canvas.scale(scale, scale);
    canvas.drawBitmap(tmp, -crop.left, -crop.top, new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG));
    canvas.setBitmap(null);
    return finalImage;
}

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