Example usage for android.graphics Canvas drawBitmap

List of usage examples for android.graphics Canvas drawBitmap

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Introduction

In this page you can find the example usage for android.graphics Canvas drawBitmap.

Prototype

public void drawBitmap(@NonNull Bitmap bitmap, @Nullable Rect src, @NonNull Rect dst, @Nullable Paint paint)

Source Link

Document

Draw the specified bitmap, scaling/translating automatically to fill the destination rectangle.

Usage

From source file:Main.java

public static final Bitmap grey(Bitmap bitmap) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();

    Bitmap faceIconGreyBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(faceIconGreyBitmap);
    Paint paint = new Paint();
    ColorMatrix colorMatrix = new ColorMatrix();
    colorMatrix.setSaturation(0);/* ww  w .  j a v a 2  s  .co  m*/
    ColorMatrixColorFilter colorMatrixFilter = new ColorMatrixColorFilter(colorMatrix);
    paint.setColorFilter(colorMatrixFilter);
    canvas.drawBitmap(bitmap, 0, 0, paint);
    return faceIconGreyBitmap;
}

From source file:Main.java

public static Bitmap toOvalBitmap(Bitmap bitmap) {
    Bitmap output = Bitmap.createBitmap(bitmap.getHeight(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(output);
    Paint paint = new Paint();
    paint.setAntiAlias(true);/*from   ww w . j a v  a 2s.  c om*/
    Rect rect = new Rect(0, 0, bitmap.getHeight(), bitmap.getHeight());
    RectF rectF = new RectF(rect);

    canvas.drawOval(rectF, paint);
    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
    canvas.drawBitmap(bitmap, rect, rectF, paint);
    return output;
}

From source file:Main.java

public static Bitmap getRoundBitmap(Bitmap bitmap) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Bitmap out = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    Canvas canvas = new Canvas(out);
    Paint paint = new Paint();
    paint.setColor(Color.WHITE);//from  w  ww  .  j  av a 2 s  .  c  o  m
    paint.setAntiAlias(true);
    canvas.drawCircle(width / 2, height / 2, width / 2, paint);
    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
    Rect rect = new Rect(0, 0, width, height);
    canvas.drawBitmap(bitmap, rect, rect, paint);
    return out;
}

From source file:Main.java

/**
 * This is only used when the launcher shortcut is created.
 * //from w  ww. j av a 2  s  .  c o m
 * @param bitmap The artist, album, genre, or playlist image that's going to
 *            be cropped.
 * @param size The new size.
 * @return A {@link Bitmap} that has been resized and cropped for a launcher
 *         shortcut.
 */
public static final Bitmap resizeAndCropCenter(final Bitmap bitmap, final int size) {
    Bitmap blurbitmap = null;

    final int w = bitmap.getWidth();
    final int h = bitmap.getHeight();
    if (w == size && h == size) {
        return bitmap;
    }

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bitmap.compress(CompressFormat.PNG, 0 /*ignored for PNG*/, bos);
    byte[] bitmapdata = bos.toByteArray();
    ByteArrayInputStream bs = new ByteArrayInputStream(bitmapdata);

    try {
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inSampleSize = 8;
        options.inJustDecodeBounds = true;
        blurbitmap = BitmapFactory.decodeStream(bs, null, options);
        options.inJustDecodeBounds = false;

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (bs != null) {
            try {
                bs.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    final float mScale = (float) size / Math.min(w, h);

    final Bitmap mTarget = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
    final int mWidth = Math.round(mScale * blurbitmap.getWidth());
    final int mHeight = Math.round(mScale * blurbitmap.getHeight());
    final Canvas mCanvas = new Canvas(mTarget);
    mCanvas.translate((size - mWidth) / 2f, (size - mHeight) / 2f);
    mCanvas.scale(mScale, mScale);
    final Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG | Paint.DITHER_FLAG);
    mCanvas.drawBitmap(bitmap, 0, 0, paint);
    return mTarget;

}

From source file:Main.java

public static Bitmap roundCorners(final Bitmap bitmap, final int radiusX, final int radiusY) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();

    Paint paint = new Paint();
    paint.setAntiAlias(true);//from w  w  w  . j a  v  a 2s . c  om
    paint.setColor(Color.WHITE);

    Bitmap clipped = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    Canvas canvas = new Canvas(clipped);
    canvas.drawRoundRect(new RectF(0, 0, width, height), radiusX, radiusY, paint);
    paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));

    Bitmap rounded = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    canvas = new Canvas(rounded);
    canvas.drawBitmap(bitmap, 0, 0, null);
    canvas.drawBitmap(clipped, 0, 0, paint);

    return rounded;
}

From source file:com.wareninja.opensource.gravatar4android.common.Utils.java

public static Bitmap getBitmapWithReflection(Bitmap originalImage) {

    //The gap we want between the reflection and the original image
    final int reflectionGap = 4;

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

    //This will not scale but will flip on the Y axis
    Matrix matrix = new Matrix();
    matrix.preScale(1, -1);/*from   ww  w  .ja va  2 s .  co  m*/

    //Create a Bitmap with the flip matrix applied to it.
    //We only want the bottom half of the image
    Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0, height / 2, width, height / 2, matrix,
            false);

    //Create a new bitmap with same width but taller to fit reflection
    Bitmap bitmapWithReflection = Bitmap.createBitmap(width, (height + height / 2), Config.ARGB_8888);

    //Create a new Canvas with the bitmap that's big enough for
    //the image plus gap plus reflection
    Canvas canvas = new Canvas(bitmapWithReflection);
    //Draw in the original image
    canvas.drawBitmap(originalImage, 0, 0, null);
    //Draw in the gap
    Paint deafaultPaint = new Paint();
    canvas.drawRect(0, height, width, height + reflectionGap, deafaultPaint);
    //Draw in the reflection
    canvas.drawBitmap(reflectionImage, 0, height + reflectionGap, null);

    //Create a shader that is a linear gradient that covers the reflection
    Paint paint = new Paint();
    LinearGradient shader = new LinearGradient(0, originalImage.getHeight(), 0,
            bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff, 0x00ffffff, TileMode.CLAMP);
    //Set the paint to use this shader (linear gradient)
    paint.setShader(shader);
    //Set the Transfer mode to be porter duff and destination in
    paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
    //Draw a rectangle using the paint with our linear gradient
    canvas.drawRect(0, height, width, bitmapWithReflection.getHeight() + reflectionGap, paint);

    return bitmapWithReflection;
}

From source file:Main.java

public static Bitmap roundCorners(final Bitmap source, final float radius) {
    int width = source.getWidth();
    int height = source.getHeight();

    Paint paint = new Paint();
    paint.setAntiAlias(true);//w w w .ja v a2s  .  c om
    paint.setColor(Color.WHITE);

    Bitmap clipped = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    Canvas canvas = new Canvas(clipped);
    canvas.drawRoundRect(new RectF(0, 0, width, height), radius, radius, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));

    Bitmap rounded = Bitmap.createBitmap(width, height, Config.ARGB_8888);
    canvas = new Canvas(rounded);
    canvas.drawBitmap(source, 0, 0, null);
    canvas.drawBitmap(clipped, 0, 0, paint);

    source.recycle();
    clipped.recycle();

    return rounded;
}

From source file:Main.java

/**
 * Method to remove color in a Bitmap, creating a gray scale image.
 *
 * @param bmpOriginal The original Bitmap.
 * @return The gray scale Bitmap.// w ww.  j a va2 s. com
 */
public static Bitmap toGrayscale(Bitmap bmpOriginal) {
    Bitmap bmpGrayscale = Bitmap.createBitmap(bmpOriginal.getWidth(), bmpOriginal.getHeight(),
            Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(bmpGrayscale);
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    ColorMatrix cm = new ColorMatrix();
    cm.setSaturation(0);
    ColorMatrixColorFilter colorMatrixColorFilter = new ColorMatrixColorFilter(cm);
    paint.setColorFilter(colorMatrixColorFilter);
    canvas.drawBitmap(bmpOriginal, 0, 0, paint);

    return bmpGrayscale;
}

From source file:Main.java

public static Bitmap getRoundedCircleBitmap(Bitmap scaleBitmapImage) {
    int targetWidth = 150;
    int targetHeight = 150;
    Bitmap targetBitmap = Bitmap.createBitmap(targetWidth, targetHeight, Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(targetBitmap);
    Path path = new Path();
    path.addCircle(((float) targetWidth - 1) / 2, ((float) targetHeight - 1) / 2,
            (Math.min(((float) targetWidth), ((float) targetHeight)) / 2), Path.Direction.CCW);

    canvas.clipPath(path);/*from w ww  .  j a v a  2s . c  o  m*/
    Bitmap sourceBitmap = scaleBitmapImage;
    canvas.drawBitmap(sourceBitmap, new Rect(0, 0, sourceBitmap.getWidth(), sourceBitmap.getHeight()),
            new Rect(0, 0, targetWidth, targetHeight), null);
    return targetBitmap;
}

From source file:Main.java

public static Bitmap revertImage(Bitmap bm) {
    Bitmap bitmap = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    Paint paint = new Paint();

    float[] matrixs = new float[] { -1, 0, 0, 1, 1, 0, -1, 0, 1, 1, 0, 0, -1, 1, 1, 0, 0, 0, 1, 0 };

    ColorMatrix colorMatrix = new ColorMatrix();
    colorMatrix.set(matrixs);//from   w ww .j a  v a 2 s  .  c o  m
    paint.setColorFilter(new ColorMatrixColorFilter(colorMatrix));

    canvas.drawBitmap(bm, 0, 0, paint);

    return bitmap;
}