Example usage for android.graphics Bitmap eraseColor

Introduction

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

Prototype

public void eraseColor(@ColorInt int c) 

Source Link

Document

Fills the bitmap's pixels with the specified Color .

Usage

From source file:Main.java

public static Bitmap getTransparentPlaceholder(int width, int height) {
    Bitmap.Config conf = Bitmap.Config.ALPHA_8;
    Bitmap bmp = Bitmap.createBitmap(width, height, conf);
    bmp.eraseColor(Color.TRANSPARENT);
    return bmp;/*w  ww.  j  ava 2 s  . c o m*/
}

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From source file:Main.java

public static Bitmap createPlaceholderBitmap(int width, int height) {
    Bitmap.Config config = Bitmap.Config.ARGB_8888;
    Bitmap placeholderBitmap = Bitmap.createBitmap(width, height, config);
    placeholderBitmap.eraseColor(android.graphics.Color.DKGRAY);
    return placeholderBitmap;
}

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From source file:Main.java

public static Bitmap createBitmapFromColor(int color, int width, int height) {
    Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
    bmp.eraseColor(color);
    return bmp;/* w  w w  .j  a va  2  s  . c  om*/
}

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From source file:Main.java

public static Bitmap clearBitmap(Bitmap sourceBitmap) {
    Bitmap newBitmap = Bitmap.createBitmap(sourceBitmap, 0, 0, sourceBitmap.getWidth(),
            sourceBitmap.getHeight());/*  ww  w  . ja v  a 2 s.c o  m*/
    Bitmap mutableBitmap = newBitmap.copy(Bitmap.Config.ARGB_8888, true);
    mutableBitmap.eraseColor(Color.TRANSPARENT);
    return mutableBitmap;
}

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From source file:Main.java

/**
 * Returns a plain white bitmap./*from   w ww.j a v  a  2 s  .  c  o  m*/
 * @param width     The width of the bitmap
 * @param height    THe height of the bitmap
 * @return  the plain white bitmap
 */
public static Bitmap getBlankBitmap(int width, int height) {
    Bitmap image = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    image.eraseColor(android.graphics.Color.WHITE);
    return image;
}

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From source file:Main.java

/**
 * Method to create a fully-transparent Bitmap using the same size of the source passed as
 * parameter and also the same density./*w  w  w .  j a v  a  2s  .  co m*/
 *
 * @param source The original Bitmap.
 * @return A transparent Bitmap with the same size of the source.
 */
public static Bitmap clear(Bitmap source) {
    Bitmap newBitmap = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight());
    //to erase the color from a Bitmap, I must use a mutable Bitmap!!!!
    Bitmap mutableBitmap = newBitmap.copy(Bitmap.Config.ARGB_8888, true);
    mutableBitmap.eraseColor(Color.TRANSPARENT);
    return mutableBitmap;
}

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From source file:Main.java

/**
 * Writes a simple bitmap to local storage. The image is a solid color with size 400x400
 *//*w w  w .  j a v  a2s  .c om*/
private static void writeSolidColorBitmapToFile(File file, int color) throws IOException {
    if (!file.exists()) {
        Bitmap bitmap = Bitmap.createBitmap(400, 400, Bitmap.Config.ARGB_8888);
        bitmap.eraseColor(color);

        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(file);
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
        } finally {
            if (fos != null) {
                fos.close();
            }
        }
    }
}

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From source file:Main.java

public static Bitmap createBitmapFromView(View view) {
    // Clear any focus from the view first to remove any cursor
    view.clearFocus();/* w w  w.j  a v a2  s.  c  om*/
    Bitmap drawingBitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
    drawingBitmap.eraseColor(Color.TRANSPARENT);
    Canvas canvas = new Canvas(drawingBitmap);
    view.draw(canvas);
    return drawingBitmap;
}

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From source file:Main.java

/**
 * Method to scale {@code sourceBitmap}, maintaining the same original size of the bitmap,
 * but with a transparent frame and the scaled and centered {@code sourceBitmap} inside.
 *
 * @return/*  w ww .  j  a va 2s . com*/
 */
public static Bitmap scaleInsideWithFrame(Bitmap mutableBitmap, float factor, int color) {
    Bitmap clearBitmap = mutableBitmap.copy(Bitmap.Config.ARGB_8888, true);
    clearBitmap.eraseColor(color);

    Bitmap resizedInsideBitmap = scaleBitmapByFactor(mutableBitmap, factor);

    int frameWidth = clearBitmap.getWidth();
    int frameHeight = clearBitmap.getHeight();
    int imageWidth = resizedInsideBitmap.getWidth();
    int imageHeight = resizedInsideBitmap.getHeight();

    Canvas canvas = new Canvas(clearBitmap);
    Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG);
    paint.setAntiAlias(true);
    canvas.drawBitmap(resizedInsideBitmap, (frameWidth - imageWidth) / 2, (frameHeight - imageHeight) / 2,
            paint);
    return clearBitmap;
}

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From source file:Main.java

public static Bitmap createBitmap(Bitmap bitmap, final String s) {
    bitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
    bitmap.eraseColor(Color.parseColor(s));
    return bitmap;
}

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