Example usage for android.graphics Canvas drawCircle

List of usage examples for android.graphics Canvas drawCircle

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  6. drawCircle

Introduction

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

Prototype

public void drawCircle(float cx, float cy, float radius, @NonNull Paint paint)

Source Link

Document

Draw the specified circle using the specified paint.

Usage

From source file:Main.java

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

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

    Canvas canvas = new Canvas(output);
    Paint paint = new Paint();
    Rect rect = new Rect(0, 0, width, height);

    paint.setAntiAlias(true);//from  w w w.ja va2s . c  o m
    canvas.drawARGB(0, 0, 0, 0);
    canvas.drawCircle(width / 2, height / 2, width / 2, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(bitmap, null, rect, paint);
    return output;
}

From source file:Main.java

public static Bitmap getRoundImage(Bitmap oriImg, boolean recycleOld) {

    Bitmap targetBitmap = null;//  w  ww.j  a v a2 s.c om

    if (oriImg != null && !oriImg.isRecycled()) {
        int size = Math.min(oriImg.getWidth(), oriImg.getHeight());
        int targetWidth = size;
        int targetHeight = size;

        targetBitmap = Bitmap.createBitmap(targetWidth, targetHeight, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(targetBitmap);

        Paint paint = new Paint();
        paint.setAntiAlias(true);
        paint.setFilterBitmap(true);
        canvas.drawARGB(0, 0, 0, 0);
        canvas.drawCircle(targetWidth / 2f, targetHeight / 2f, targetWidth / 2f, paint);

        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(oriImg, new Rect(0, 0, size, size), new Rect(0, 0, targetWidth, targetHeight), paint);

        if (recycleOld) {
            oriImg.recycle();
        }
    }
    return targetBitmap;
}

From source file:Main.java

public static Bitmap toRoundCorner(Bitmap bitmap) {
    int height = bitmap.getHeight();
    int width = bitmap.getHeight();
    Bitmap output = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(output);

    final Paint paint = new Paint();
    final Rect rect = new Rect(0, 0, width, height);

    paint.setAntiAlias(true);//from   w  w w  . j  ava 2  s.com
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(Color.TRANSPARENT);
    canvas.drawCircle(width / 2, height / 2, width / 2, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(bitmap, rect, rect, paint);
    return output;
}

From source file:Main.java

/**
 * Frames the input bitmap in a circle.//from  ww  w .j  a  v a  2 s .  co  m
 */
public static Bitmap frameBitmapInCircle(Bitmap input) {
    if (input == null) {
        return null;
    }

    // Crop the image if not squared.
    int inputWidth = input.getWidth();
    int inputHeight = input.getHeight();
    int targetX, targetY, targetSize;
    if (inputWidth >= inputHeight) {
        targetX = inputWidth / 2 - inputHeight / 2;
        targetY = 0;
        targetSize = inputHeight;
    } else {
        targetX = 0;
        targetY = inputHeight / 2 - inputWidth / 2;
        targetSize = inputWidth;
    }

    // Create an output bitmap and a canvas to draw on it.
    Bitmap output = Bitmap.createBitmap(targetSize, targetSize, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

    // Create a black paint to draw the mask.
    Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint.setColor(Color.BLACK);

    // Draw a circle.
    canvas.drawCircle(targetSize / 2, targetSize / 2, targetSize / 2, paint);

    // Replace the black parts of the mask with the input image.
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(input, targetX /* left */, targetY /* top */, paint);

    return output;
}

From source file:Main.java

/**
 * Create round, coloured bitmap with text embedded.
 * @param circleColor The color to use./*from   www . ja v a  2  s.c om*/
 * @param diameterDP The diameter of the circle.
 * @param text The text to embed.
 * @return Bitmap showing a text.
 */
public static Bitmap generateCircleBitmap(int circleColor, float diameterDP, String text) {
    /**
     *
     * http://stackoverflow.com/questions/31168636/rounded-quickcontactbadge-with-text
     */
    final int textColor = 0xffffffff;

    DisplayMetrics metrics = Resources.getSystem().getDisplayMetrics();
    float diameterPixels = diameterDP * (metrics.densityDpi / 160f);
    float radiusPixels = diameterPixels / 2;

    // Create the bitmap
    Bitmap output = Bitmap.createBitmap((int) diameterPixels, (int) diameterPixels, Bitmap.Config.ARGB_8888);

    // Create the canvas to draw on
    Canvas canvas = new Canvas(output);
    canvas.drawARGB(0, 0, 0, 0);

    // Draw the circle
    final Paint paintC = new Paint();
    paintC.setAntiAlias(true);
    paintC.setColor(circleColor);
    canvas.drawCircle(radiusPixels, radiusPixels, radiusPixels, paintC);

    // Draw the text
    if (text != null && text.length() > 0) {
        final Paint paintT = new Paint();
        paintT.setColor(textColor);
        paintT.setAntiAlias(true);
        paintT.setTextSize(radiusPixels * 2);
        paintT.setTypeface(Typeface.SANS_SERIF);
        final Rect textBounds = new Rect();
        paintT.getTextBounds(text, 0, text.length(), textBounds);
        canvas.drawText(text, radiusPixels - textBounds.exactCenterX(),
                radiusPixels - textBounds.exactCenterY(), paintT);
    }

    return output;
}

From source file:Main.java

public static Bitmap getCroppedBitmap(Bitmap bmp, int radius, int border, int color) {
    Bitmap scaledBitmap;// w w w  .  ja va  2 s  .  com
    if (bmp.getWidth() != radius || bmp.getHeight() != radius) {
        scaledBitmap = ThumbnailUtils.extractThumbnail(bmp, radius - 2, radius - 2);
    } else {
        scaledBitmap = bmp;
    }

    Bitmap output = Bitmap.createBitmap(scaledBitmap.getWidth(), scaledBitmap.getHeight(),
            Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

    final Paint paint = new Paint();
    paint.setAntiAlias(true);
    paint.setFilterBitmap(true);
    paint.setDither(true);
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(color);
    canvas.drawCircle(scaledBitmap.getWidth() / 2, scaledBitmap.getHeight() / 2, scaledBitmap.getWidth() / 2,
            paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));

    final Rect rect = new Rect(0, 0, scaledBitmap.getWidth(), scaledBitmap.getHeight());
    canvas.drawBitmap(scaledBitmap, rect, rect, paint);

    if (border > 0) {
        paint.setStrokeWidth(border);
        paint.setStyle(Paint.Style.STROKE);
        canvas.drawCircle(scaledBitmap.getWidth() / 2, scaledBitmap.getHeight() / 2,
                scaledBitmap.getWidth() / 2, paint);
    }

    return output;
}

From source file:Main.java

public static void drawCircleBorder(Canvas canvas, int radius, int w, int y) {
    Paint paint = new Paint();
    paint.setAntiAlias(true);//from  w ww.j ava  2  s . c  o m
    paint.setFilterBitmap(true);
    paint.setDither(true);
    paint.setColor(Color.WHITE);
    paint.setStyle(Paint.Style.STROKE);
    paint.setStrokeWidth(mBorderThickness);
    canvas.drawCircle(w / 2, y / 2, radius, paint);
}

From source file:Main.java

public static Bitmap toRoundCorner(Bitmap bitmap) {
    int height = bitmap.getHeight();
    int width = bitmap.getHeight();
    Bitmap output = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(output);

    final Paint paint = new Paint();
    final Rect rect = new Rect(0, 0, width, height);

    paint.setAntiAlias(true);/*from w  w  w  .jav  a2s  .co m*/
    canvas.drawARGB(0, 0, 0, 0);
    //paint.setColor(0xff424242);
    paint.setColor(Color.TRANSPARENT);
    canvas.drawCircle(width / 2, height / 2, width / 2, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(bitmap, rect, rect, paint);
    return output;
}

From source file:Main.java

public static Bitmap punchAHoleInABitmap(Context context, Bitmap foreground, float x1, float y1) {
    Bitmap bitmap = Bitmap.createBitmap(foreground.getWidth(), foreground.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    Paint paint = new Paint();
    canvas.drawBitmap(foreground, 0, 0, paint);
    paint.setAntiAlias(true);/*from   ww w  .j av  a 2  s  .com*/
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
    float radius = (float) (getScreenSize(context).x * .06);
    canvas.drawCircle(x1, y1 - 450, radius, paint);
    return bitmap;
}

From source file:Main.java

/**
 * Method to get a rounded rectange bitmap
 * @param bitmap/*w w  w  . j a  va2 s  . com*/
 * @param pixels
 * @return
 */
public static Bitmap getRoundedRectBitmap(Bitmap bitmap, int pixels) {
    Bitmap result = null;
    try {
        result = Bitmap.createBitmap(150, 150, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(result);

        int color = 0xff424242;
        Paint paint = new Paint();
        Rect rect = new Rect(0, 0, 200, 200);

        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawCircle(75, 75, 75, paint);
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);

    } catch (NullPointerException e) {
    } catch (OutOfMemoryError o) {
    }
    return result;
}