Example usage for android.graphics Canvas drawColor

Introduction

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

Prototype

public void drawColor(@ColorInt int color)

Source Link

Document

Fill the entire canvas' bitmap (restricted to the current clip) with the specified color, using srcover porterduff mode.

Usage

From source file:Main.java

public static Bitmap addWhiteBorder(Bitmap bmp, int borderSize) {
    Bitmap bmpWithBorder = Bitmap.createBitmap(bmp.getWidth() + borderSize * 2,
            bmp.getHeight() + borderSize * 2, bmp.getConfig());
    Canvas canvas = new Canvas(bmpWithBorder);
    canvas.drawColor(Color.WHITE);
    canvas.drawBitmap(bmp, borderSize, borderSize, null);
    return bmpWithBorder;
}

From source file:Main.java

public static Bitmap addPadding(@NonNull Bitmap bmp) {

    int biggerParam = Math.max(bmp.getWidth(), bmp.getHeight());
    Bitmap bitmap = Bitmap.createBitmap(biggerParam, biggerParam, bmp.getConfig());
    Canvas canvas = new Canvas(bitmap);
    canvas.drawColor(Color.WHITE);

    int top = bmp.getHeight() > bmp.getWidth() ? 0 : (bmp.getWidth() - bmp.getHeight()) / 2;
    int left = bmp.getWidth() > bmp.getHeight() ? 0 : (bmp.getHeight() - bmp.getWidth()) / 2;

    canvas.drawBitmap(bmp, left, top, null);
    return bitmap;
}

From source file:Main.java

/**
 * Helper to create a bitmap to set as imageview or bg
 * @param bgcolor/*from ww w  . j a v  a 2 s  . co m*/
 * @return bitmap
 */
public static Bitmap getBackground(int bgcolor) {
    try {
        Bitmap.Config config = Bitmap.Config.ARGB_8888;
        Bitmap bitmap = Bitmap.createBitmap(2, 2, config);
        Canvas canvas = new Canvas(bitmap);
        canvas.drawColor(bgcolor);
        return bitmap;
    } catch (Exception e) {
        return null;
    }
}

From source file:Main.java

public static Drawable solidColorDrawable(int color) {
    return new Drawable() {
        @Override/*from   w w w. j  a va 2s . co m*/
        public void setColorFilter(ColorFilter cf) {
        }

        @Override
        public void setAlpha(int alpha) {
        }

        @Override
        public int getOpacity() {
            return 0;
        }

        @Override
        public void draw(Canvas canvas) {
            canvas.drawColor(0xFF000000);
        }
    };
}

From source file:Main.java

public static Bitmap addPadding(Bitmap bmp, int color) {

    if (bmp == null) {
        return null;
    }/*  www.  j  a  v a2 s  . com*/

    int biggerParam = Math.max(bmp.getWidth(), bmp.getHeight());
    Bitmap bitmap = Bitmap.createBitmap(biggerParam, biggerParam, bmp.getConfig());
    Canvas canvas = new Canvas(bitmap);
    canvas.drawColor(color);

    int top = bmp.getHeight() > bmp.getWidth() ? 0 : (bmp.getWidth() - bmp.getHeight()) / 2;
    int left = bmp.getWidth() > bmp.getHeight() ? 0 : (bmp.getHeight() - bmp.getWidth()) / 2;

    canvas.drawBitmap(bmp, left, top, null);
    return bitmap;
}

From source file:Main.java

/**
 * Adds the white border to the specifed bitmap image using specified border size.
 * /*from w  w w  .j  a  v  a  2  s .  co  m*/
 * @param bmp to add border
 * @param borderSize
 * @return bitmap image with border.
 */
public static Bitmap addWhiteBorder(Bitmap bmp, int borderSize, int imgSize) {

    Bitmap bmpWithBorder = Bitmap.createBitmap(bmp.getWidth() + borderSize * 2,
            bmp.getHeight() + borderSize * 2, bmp.getConfig());
    Canvas canvas = new Canvas(bmpWithBorder);
    canvas.drawColor(Color.WHITE);
    canvas.drawBitmap(bmp, borderSize, borderSize, null);

    return bmpWithBorder;
}

From source file:Main.java

public static Bitmap getBitmap(int background, Bitmap contour, float alpha) {
    Bitmap bitmap = Bitmap.createBitmap(contour.getWidth(), contour.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    canvas.drawColor(background);
    return getBitmap(bitmap, contour, alpha);
}

From source file:Main.java

public static Bitmap getTextImage(String text, float size, int width, int height) {
    final Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    final Paint paint = new Paint();
    final Canvas canvas = new Canvas(bmp);

    canvas.drawColor(Color.WHITE);

    paint.setColor(Color.BLACK);/*from  w w  w.ja va  2  s.c  o m*/
    paint.setStyle(Style.FILL);
    paint.setAntiAlias(true);
    paint.setTextAlign(Align.CENTER);
    paint.setTextSize(size);
    paint.setTypeface(Typeface.DEFAULT);
    canvas.drawText(text, width / 2, height / 2, paint);

    return bmp;
}

From source file:Main.java

public static Bitmap createPngScreenshot2(View view, int thumbnailWidth, int thumbnailHeight, int top) {
    if (view != null) {
        Bitmap mCapture;//w w w .j a va 2  s.  c  om
        try {
            mCapture = Bitmap.createBitmap(thumbnailWidth, thumbnailHeight, Bitmap.Config.ARGB_8888);
        } catch (OutOfMemoryError e) {
            return null;
        }
        Canvas c = new Canvas(mCapture);
        c.drawColor(Color.BLACK);
        //            final int left = view.getScrollX();
        //            final int top = view.getScrollY();
        c.translate(0, -top);
        //c.scale(0.65f, 0.65f, left, top);
        try {
            // draw webview may nullpoint               
            view.draw(c);
        } catch (Exception e) {
        }
        return mCapture;
    }
    return null;
}

From source file:Main.java

public static byte[] bmp2bytesStream(Bitmap bitmap) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    if (width % 8 != 0) {
        int adjustWidth = width + (8 - width % 8);
        final Bitmap.Config config = Bitmap.Config.ARGB_8888;
        Bitmap whiteBgBitmap = Bitmap.createBitmap(adjustWidth, height, config);
        Canvas canvas = new Canvas(whiteBgBitmap);
        canvas.drawColor(Color.WHITE);
        canvas.drawBitmap(bitmap, 0, 0, null);

        bitmap = whiteBgBitmap;/*  ww  w  . j av a  2s  .  c o  m*/
        width = bitmap.getWidth();
    }
    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    byte[] image = new byte[width * height];
    final byte WHITE = 0, BLACK = 1;
    for (int i = 0; i < pixels.length; i++) {
        image[i] = (pixels[i] != 0xFFFFFFFF) ? BLACK : WHITE;
    }
    final int COL = width + width % 2;
    byte[] row = new byte[COL];
    byte[] res = new byte[COL / 8 * height];
    for (int i = 0, dex = 0, num = 0; i < height; ++i) {
        System.arraycopy(image, i * width, row, 0, width);
        for (byte e : row) {
            res[dex] += e << (7 - num++);
            num = 8 == num ? 0 : num;
            dex = 0 == num ? dex + 1 : dex;
        }
    }
    return res;
}