Example usage for android.graphics Paint Paint

Introduction

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

Prototype

public Paint() 

Source Link

Document

Create a new paint with default settings.

Usage

From source file:Main.java

public static Bitmap scaleCenterCrop(Bitmap source, int newHeight, int newWidth) {
    int sourceWidth = source.getWidth();
    int sourceHeight = source.getHeight();

    // Compute the scaling factors to fit the new height and width, respectively.
    // To cover the final image, the final scaling will be the bigger
    // of these two.
    float xScale = (float) newWidth / sourceWidth;
    float yScale = (float) newHeight / sourceHeight;
    float scale = Math.max(xScale, yScale);

    // Now get the size of the source bitmap when scaled
    float scaledWidth = scale * sourceWidth;
    float scaledHeight = scale * sourceHeight;

    // Let's find out the upper left coordinates if the scaled bitmap
    // should be centered in the new size give by the parameters
    float left = (newWidth - scaledWidth) / 2;
    float top = (newHeight - scaledHeight) / 2;

    // The target rectangle for the new, scaled version of the source bitmap will now
    // be//from  w w w  .ja  v  a  2  s  .co m
    RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);

    // Finally, we create a new bitmap of the specified size and draw our new,
    // scaled bitmap onto it.
    Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, CONFIG);
    Canvas canvas = new Canvas(dest);
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    paint.setFilterBitmap(true);
    paint.setDither(true);
    canvas.drawBitmap(source, null, targetRect, paint);

    return dest;
}

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From source file:Main.java

/**
 * ---------------------------------------------------------------------------
 * USE THIS METHOD AND NOT THE OLDER VERSION CALLED: "overlayColorOnGrayScale"
 * ---------------------------------------------------------------------------
 * Method to overlay color on a gray scale Bitmap.
 * This method creates automatically a gray scale bitmap from {@code source}.
 *
 * @param source The original colored Bitmap.
 * @param color  Color to overlay./*from  www  .  j  ava2s . c om*/
 * @return A colored gray scale Bitmap.
 */
public static Bitmap overlayColorOnGrayScale(Bitmap source, int color) {
    Bitmap newBitmap = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
    Bitmap mutableBitmap = newBitmap.copy(Bitmap.Config.ARGB_8888, true);

    Canvas canvas = new Canvas(mutableBitmap);
    canvas.drawBitmap(source, 0, 0, getGrayScalePaint());

    Paint paint = new Paint();
    paint.setAntiAlias(true);
    ColorFilter filter = new LightingColorFilter(color, 1);
    paint.setColorFilter(filter);
    canvas.drawBitmap(mutableBitmap, 0, 0, paint);

    return mutableBitmap;
}

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From source file:Main.java

public static Bitmap toReflectionBitmap(Bitmap bitmap) {
    if (bitmap == null) {
        return null;
    }//  w w  w .ja  va 2s.  c  o  m

    try {
        int reflectionGap = 1;
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();

        // This will not scale but will flip on the Y axis
        Matrix matrix = new Matrix();
        matrix.preScale(1, -1);

        // Create a Bitmap with the flip matrix applied to it.
        // We only want the bottom half of the image
        Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 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),
                Bitmap.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(bitmap, 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, bitmap.getHeight(), 0,
                bitmapWithReflection.getHeight() + reflectionGap, 0x70ffffff, 0x00ffffff,
                Shader.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(PorterDuff.Mode.DST_IN));
        // Draw a rectangle using the paint with our linear gradient
        canvas.drawRect(0, height, width, bitmapWithReflection.getHeight() + reflectionGap, paint);

        bitmap = bitmapWithReflection;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return bitmap;
}

---

From source file:Main.java

/**
 * Save jpeg image with background color
 * @param strFileName Save file path/*from w w w  . j  a va2 s .c om*/
 * @param bitmap Input bitmap
 * @param nQuality Jpeg quality for saving
 * @param nBackgroundColor background color
 * @return whether success or not
 */
public static boolean saveBitmapJPEGWithBackgroundColor(String strFileName, Bitmap bitmap, int nQuality,
        int nBackgroundColor) {
    boolean bSuccess1 = false;
    boolean bSuccess2 = false;
    boolean bSuccess3;
    File saveFile = new File(strFileName);

    if (saveFile.exists()) {
        if (!saveFile.delete())
            return false;
    }

    int nA = (nBackgroundColor >> 24) & 0xff;

    // If Background color alpha is 0, Background color substitutes as white
    if (nA == 0)
        nBackgroundColor = 0xFFFFFFFF;

    Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
    Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(newBitmap);
    canvas.drawColor(nBackgroundColor);
    canvas.drawBitmap(bitmap, rect, rect, new Paint());

    // Quality limitation min/max
    if (nQuality < 10)
        nQuality = 10;
    else if (nQuality > 100)
        nQuality = 100;

    OutputStream out = null;

    try {
        bSuccess1 = saveFile.createNewFile();
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    try {
        out = new FileOutputStream(saveFile);
        bSuccess2 = newBitmap.compress(CompressFormat.JPEG, nQuality, out);
    } catch (Exception e) {
        e.printStackTrace();
    }

    try {
        if (out != null) {
            out.flush();
            out.close();
            bSuccess3 = true;
        } else
            bSuccess3 = false;

    } catch (IOException e) {
        e.printStackTrace();
        bSuccess3 = false;
    } finally {
        if (out != null) {
            try {
                out.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    return (bSuccess1 && bSuccess2 && bSuccess3);
}

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From source file:Main.java

public static Bitmap createRoundCornerBitmap(Bitmap bitmap, float roundPx, boolean lt, boolean rt, boolean lb,
        boolean rb) {
    Bitmap roundCornerBitmap = createRoundCornerBitmap(bitmap, roundPx);
    Canvas canvas = new Canvas(roundCornerBitmap);
    canvas.drawARGB(0, 0, 0, 0);//from  ww w.ja  v a 2 s. c  o  m
    int bw = bitmap.getWidth();
    int bh = bitmap.getHeight();
    int centerW = bw / 2;
    int centerH = bh / 2;

    Paint paint = new Paint();
    Paint defaultPaint = new Paint();
    int color = 0xff424242;
    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
    paint.setAntiAlias(true);
    paint.setColor(color);

    Bitmap cutBitmap = null;
    Canvas cutCanvas = null;
    if (!lt) {
        cutBitmap = Bitmap.createBitmap(bw, bh, Bitmap.Config.ARGB_8888);
        cutCanvas = new Canvas(cutBitmap);
        cutCanvas.drawRect(0, 0, centerW, centerH, defaultPaint);
        cutCanvas.drawBitmap(bitmap, 0, 0, paint);
        canvas.drawBitmap(cutBitmap, 0, 0, defaultPaint);
        cutBitmap.recycle();
    }
    if (!rt) {
        cutBitmap = Bitmap.createBitmap(bw, bh, Bitmap.Config.ARGB_8888);
        cutCanvas = new Canvas(cutBitmap);
        cutCanvas.drawRect(centerW, 0, bw, centerH, defaultPaint);
        cutCanvas.drawBitmap(bitmap, 0, 0, paint);
        canvas.drawBitmap(cutBitmap, 0, 0, defaultPaint);
        cutBitmap.recycle();
    }
    if (!lb) {
        cutBitmap = Bitmap.createBitmap(bw, bh, Bitmap.Config.ARGB_8888);
        cutCanvas = new Canvas(cutBitmap);
        cutCanvas.drawRect(0, centerH, centerW, bh, defaultPaint);
        cutCanvas.drawBitmap(bitmap, 0, 0, paint);
        canvas.drawBitmap(cutBitmap, 0, 0, defaultPaint);
        cutBitmap.recycle();
    }
    if (!rb) {
        cutBitmap = Bitmap.createBitmap(bw, bh, Bitmap.Config.ARGB_8888);
        cutCanvas = new Canvas(cutBitmap);
        cutCanvas.drawRect(centerW, centerH, bw, bh, defaultPaint);
        cutCanvas.drawBitmap(bitmap, 0, 0, paint);
        canvas.drawBitmap(cutBitmap, 0, 0, defaultPaint);
        cutBitmap.recycle();
    }
    return roundCornerBitmap;
}

---

From source file:Main.java

/**
 * Save jpeg image with background color
 * @param strFileName Save file path//from   w  ww  . j a v a2s  .c om
 * @param bitmap Input bitmap
 * @param nQuality Jpeg quality for saving
 * @param nBackgroundColor background color
 * @return whether success or not
 */
public static boolean saveBitmapJPEGWithBackgroundColor(String strFileName, Bitmap bitmap, int nQuality,
        int nBackgroundColor) {
    boolean bSuccess1 = false;
    boolean bSuccess2 = false;
    boolean bSuccess3;
    File saveFile = new File(strFileName);

    if (saveFile.exists()) {
        if (!saveFile.delete())
            return false;
    }

    int nA = (nBackgroundColor >> 24) & 0xff;

    // If Background color alpha is 0, Background color substitutes as white
    if (nA == 0)
        nBackgroundColor = 0xFFFFFFFF;

    Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
    Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(newBitmap);
    canvas.drawColor(nBackgroundColor);
    canvas.drawBitmap(newBitmap, rect, rect, new Paint());
    canvas.drawBitmap(bitmap, rect, rect, new Paint());

    // Quality limitation min/max
    if (nQuality < 10)
        nQuality = 10;
    else if (nQuality > 100)
        nQuality = 100;

    OutputStream out = null;

    try {
        bSuccess1 = saveFile.createNewFile();
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    try {
        out = new FileOutputStream(saveFile);
        bSuccess2 = newBitmap.compress(CompressFormat.JPEG, nQuality, out);
    } catch (Exception e) {
        e.printStackTrace();
    }

    try {
        if (out != null) {
            out.flush();
            out.close();
            bSuccess3 = true;
        } else
            bSuccess3 = false;

    } catch (IOException e) {
        e.printStackTrace();
        bSuccess3 = false;
    } finally {
        if (out != null) {
            try {
                out.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    return (bSuccess1 && bSuccess2 && bSuccess3);
}

---

From source file:Main.java

public static Bitmap toGrayScale(Bitmap bmpOriginal) {
    int width, height;
    height = bmpOriginal.getHeight();/*  w  ww.j  a  v a 2s.  c o m*/
    width = bmpOriginal.getWidth();

    Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
    Canvas c = new Canvas(bmpGrayscale);
    Paint paint = new Paint();
    ColorMatrix cm = new ColorMatrix();
    cm.setSaturation(0);
    ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);
    paint.setColorFilter(f);
    c.drawBitmap(bmpOriginal, 0, 0, paint);
    return bmpGrayscale;
}

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From source file:Main.java

/**
 * This method takes a square bitmap and clips it into a circle
 *
 * @param bitmap : the image to clip/*from ww w  .  j av a2  s  . c o m*/
 * @return the clipped bitmap
 */
public static Bitmap getCroppedBitmap(Bitmap bitmap) {
    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.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());

    paint.setAntiAlias(true);
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(color);
    // canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
    canvas.drawCircle(bitmap.getWidth() / 2, bitmap.getHeight() / 2, bitmap.getWidth() / 2, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(bitmap, rect, rect, paint);
    //Bitmap _bmp = Bitmap.createScaledBitmap(output, 60, 60, false);
    //return _bmp;
    return output;
}

---

From source file:Main.java

public static Bitmap createRoundedBitmap(Context context, Bitmap bitmap, int leftTop, int rightTop,
        int leftBottm, int rightBottom) {
    Bitmap bmp;//ww  w .ja  va2  s.  c  om

    bmp = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
    BitmapShader shader = new BitmapShader(bitmap, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP);

    float radius = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, leftTop,
            context.getResources().getDisplayMetrics());
    Canvas canvas = new Canvas(bmp);
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    paint.setShader(shader);

    RectF rect = new RectF(0, 0, bitmap.getWidth(), bitmap.getHeight());
    canvas.drawRoundRect(rect, radius, radius, paint);
    return bmp;
}

---

From source file:Main.java

public static Bitmap getRoundedCornerBitmap(Bitmap bitmap, int pixels) {
    if (bitmap == null)
        return null;
    Bitmap output;/*from   w ww.  ja va  2s. c om*/
    try {
        output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.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);
        canvas.drawARGB(0, 0, 0, 0);

        paint.setColor(color);
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);
    } catch (Exception ex) {

        //adding as a precaution because finding a few crashes in bitmap modification
        return bitmap;
    }
    return output;
}

---

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