Example usage for android.graphics Canvas Canvas

Introduction

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

Prototype

@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
public Canvas(long nativeCanvas)

Source Link

Usage

From source file:Main.java

public static Bitmap convertView2Bitmap(View view) {
    try {//from w w w. j a va2 s.co m
        Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        view.draw(canvas);
        return bitmap;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

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);/*w  ww  .  j  a  v a 2 s. com*/
    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 convertViewToBitmap(View view) {

    Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
    view.draw(new Canvas(bitmap));
    return bitmap;
}

From source file:Main.java

public static Bitmap convertToBitmap(Drawable drawable, int width, int height) {
    Bitmap outputBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(outputBitmap);

    drawable.setBounds(0, 0, width, height);
    drawable.draw(canvas);//from w  w  w.  j a va2  s .  c  om

    return outputBitmap;
}

From source file:Main.java

public static Bitmap screenShot(int width, int height, View view) {
    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    view.draw(canvas);/*from w  ww. j  ava2s .  c om*/
    return bitmap;
}

From source file:Main.java

public static Bitmap convertToAlphaMask(Bitmap b) {
    Bitmap a = Bitmap.createBitmap(b.getWidth(), b.getHeight(), Bitmap.Config.ALPHA_8);
    Canvas c = new Canvas(a);
    c.drawBitmap(b, 0.0f, 0.0f, null);/*from  w w w .  j av  a2  s . co  m*/

    return a;
}

From source file:Main.java

public static Bitmap createBitmap(View target) {
    Bitmap b = Bitmap.createBitmap(target.getWidth(), target.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas c = new Canvas(b);
    target.draw(c);//from www.  j  ava  2  s .  c o m

    /* enable this to invert the image: */
    //invertImage(b);

    return b;
}

From source file:Main.java

public static Bitmap toRoundCorner(Bitmap bitmap, int pixels) {
    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

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

    paint.setAntiAlias(true);//w w w. j av a 2s  .  c om
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(color);
    canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
    canvas.drawBitmap(bitmap, rect, rect, paint);

    return output;
}

From source file:Main.java

public static Bitmap toCircleBitmap(Bitmap bitmap) {

    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    int r = width < height ? width : height;

    Bitmap buffer = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(buffer);
    Paint paint = new Paint();
    paint.setAntiAlias(true);//from www  .j  a va2s.  co  m
    RectF rect = new RectF(0, 0, r, r);

    canvas.drawCircle(r / 2, r / 2, r / 2, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(bitmap, null, rect, paint);
    bitmap.recycle();
    return buffer;
}

From source file:Main.java

public static Bitmap drawableToBitmap(Drawable drawable) {
    Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(),
            Bitmap.Config.RGB_565);/*from   www . j  ava 2  s  .  c  o m*/
    Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
    drawable.draw(canvas);
    return bitmap;
}