Example usage for android.graphics Bitmap setPixels

Introduction

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

Prototype

public void setPixels(@ColorInt int[] pixels, int offset, int stride, int x, int y, int width, int height) 

Source Link

Document

Replace pixels in the bitmap with the colors in the array.

Usage

From source file:com.amap.api.maps2d.heatmaps.HeatmapTileProvider.java

/**
 * Converts a grid of intensity values to a colored Bitmap, using a given
 * color map/* ww w  .ja  v  a  2  s . c  om*/
 * 
 * @param grid the input grid (assumed to be square)
 * @param colorMap color map (created by generateColorMap)
 * @param max Maximum intensity value: maps to 100% on gradient
 * @return the colorized grid in Bitmap form, with same dimensions as grid
 */
static Bitmap colorize(final double[][] grid, final int[] colorMap, final double max) {
    // Maximum color value
    final int maxColor = colorMap[colorMap.length - 1];
    // Multiplier to "scale" intensity values with, to map to appropriate
    // color
    final double colorMapScaling = (colorMap.length - 1) / max;
    // Dimension of the input grid (and dimension of output bitmap)
    final int dim = grid.length;

    int i, j, index, col;
    double val;
    // Array of colors
    final int colors[] = new int[dim * dim];
    for (i = 0; i < dim; i++) {
        for (j = 0; j < dim; j++) {
            // [x][y]
            // need to enter each row of x coordinates sequentially (x
            // first)
            // -> [j][i]
            val = grid[j][i];
            index = i * dim + j;
            col = (int) (val * colorMapScaling);

            if (val != 0) {
                // Make it more resilient: cant go outside colorMap
                if (col < colorMap.length) {
                    colors[index] = colorMap[col];
                } else {
                    colors[index] = maxColor;
                }
            } else {
                colors[index] = Color.TRANSPARENT;
            }
        }
    }

    // Now turn these colors into a bitmap
    final Bitmap tile = Bitmap.createBitmap(dim, dim, Bitmap.Config.ARGB_8888);
    // (int[] pixels, int offset, int stride, int x, int y, int width, int
    // height)
    tile.setPixels(colors, 0, dim, 0, 0, dim, dim);
    return tile;
}

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From source file:Main.java

public static Bitmap handleImageNegative(Bitmap bm) {
    int width = bm.getWidth();
    int height = bm.getHeight();
    int color;// w  w w .  ja  v  a 2s.c  o m
    int r, g, b, a;
    Bitmap bmp = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);
    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];
    bm.getPixels(oldPx, 0, width, 0, 0, width, height);
    for (int i = 0; i < width * height; i++) {
        color = oldPx[i];
        r = Color.red(color);
        g = Color.green(color);
        b = Color.blue(color);
        a = Color.alpha(color);

        r = 255 - r;
        g = 255 - g;
        b = 255 - b;
        if (r > 255) {
            r = 255;
        } else if (r < 0) {
            r = 0;
        }
        if (g > 255) {
            g = 255;
        } else if (g < 0) {
            g = 0;
        }
        if (b > 255) {
            b = 255;
        } else if (b < 0) {
            b = 0;
        }
        newPx[i] = Color.argb(a, r, g, b);
    }
    bmp.setPixels(newPx, 0, width, 0, 0, width, height);
    return bmp;

}

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From source file:Main.java

public static Bitmap backsheetImage(Bitmap bm) {

    int width = bm.getWidth();
    int height = bm.getHeight();
    int color;//from  www  .jav a 2  s.  c  o m
    int r, g, b, a;

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

    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];

    bm.getPixels(oldPx, 0, width, 0, 0, width, height);

    for (int i = 0; i < oldPx.length; i++) {
        color = oldPx[i];
        r = Color.red(color);
        g = Color.green(color);
        b = Color.blue(color);
        a = Color.alpha(color);

        r = 255 - r;
        g = 255 - g;
        b = 255 - b;

        if (r > 255) {
            r = 255;
        } else if (r < 0) {
            r = 0;
        }

        if (g > 255) {
            g = 255;
        } else if (g < 0) {
            g = 0;
        }

        if (b > 255) {
            b = 255;
        } else if (b < 0) {
            b = 0;
        }

        newPx[i] = Color.argb(a, r, g, b);
    }

    bitmap.setPixels(newPx, 0, width, 0, 0, width, height);
    return bitmap;
}

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From source file:jahirfiquitiva.iconshowcase.utilities.utils.Utils.java

@SuppressWarnings("ConstantConditions")
public static Bitmap getWidgetPreview(@NonNull Bitmap bitmap, @ColorInt int colorToReplace) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);

    int minX = width;
    int minY = height;
    int maxX = -1;
    int maxY = -1;

    Bitmap newBitmap = Bitmap.createBitmap(width, height, bitmap.getConfig());
    int pixel;//from w ww.j  ava  2  s  .  c o m

    for (int y = 0; y < height; ++y) {
        for (int x = 0; x < width; ++x) {
            int index = y * width + x;
            pixel = pixels[index];
            if (pixel == colorToReplace) {
                pixels[index] = android.graphics.Color.TRANSPARENT;
            }
            if (pixels[index] != android.graphics.Color.TRANSPARENT) {
                if (x < minX)
                    minX = x;
                if (x > maxX)
                    maxX = x;
                if (y < minY)
                    minY = y;
                if (y > maxY)
                    maxY = y;
            }
        }
    }

    newBitmap.setPixels(pixels, 0, width, 0, 0, width, height);

    return Bitmap.createBitmap(newBitmap, minX, minY, (maxX - minX) + 1, (maxY - minY) + 1);
}

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From source file:Main.java

public static Bitmap handleImagePixelsOldPhoto(Bitmap bm) {
    Bitmap bmp = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);
    int width = bm.getWidth();
    int height = bm.getHeight();
    int color = 0;
    int r, g, b, a, r1, g1, b1;

    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];

    bm.getPixels(oldPx, 0, bm.getWidth(), 0, 0, width, height);
    for (int i = 0; i < width * height; i++) {
        color = oldPx[i];//from   ww  w.  jav  a2  s .  c  o  m
        a = Color.alpha(color);
        r = Color.red(color);
        g = Color.green(color);
        b = Color.blue(color);

        r1 = (int) (0.393 * r + 0.769 * g + 0.189 * b);
        g1 = (int) (0.349 * r + 0.686 * g + 0.168 * b);
        b1 = (int) (0.272 * r + 0.534 * g + 0.131 * b);

        if (r1 > 255) {
            r1 = 255;
        }
        if (g1 > 255) {
            g1 = 255;
        }
        if (b1 > 255) {
            b1 = 255;
        }

        newPx[i] = Color.argb(a, r1, g1, b1);
    }
    bmp.setPixels(newPx, 0, width, 0, 0, width, height);
    return bmp;
}

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From source file:Main.java

public static Bitmap nostalgic(Bitmap bitmap) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    Bitmap newBitmap = Bitmap.createBitmap(width, height, Config.RGB_565);
    int pixColor = 0;
    int pixR = 0;
    int pixG = 0;
    int pixB = 0;
    int newR = 0;
    int newG = 0;
    int newB = 0;
    int[] pixels = new int[width * height];
    bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
    for (int i = 0; i < height; i++) {
        for (int k = 0; k < width; k++) {
            pixColor = pixels[width * i + k];
            pixR = Color.red(pixColor);
            pixG = Color.green(pixColor);
            pixB = Color.blue(pixColor);
            newR = (int) (0.393 * pixR + 0.769 * pixG + 0.189 * pixB);
            newG = (int) (0.349 * pixR + 0.686 * pixG + 0.168 * pixB);
            newB = (int) (0.272 * pixR + 0.534 * pixG + 0.131 * pixB);
            int newColor = Color.argb(255, newR > 255 ? 255 : newR, newG > 255 ? 255 : newG,
                    newB > 255 ? 255 : newB);
            pixels[width * i + k] = newColor;
        }//from ww w  .ja v a 2  s  .c  om
    }
    newBitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return newBitmap;
}

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From source file:org.onebusaway.android.util.UIUtils.java

/**
 * Creates a new Bitmap, with the black color of the source image changed to the given color.
 * The source Bitmap isn't modified./*www .  ja v a2 s  .  c  om*/
 *
 * @param source the source Bitmap with a black background
 * @param color  the color to change the black color to
 * @return the resulting Bitmap that has the black changed to the color
 */
public static Bitmap colorBitmap(Bitmap source, int color) {
    int width = source.getWidth();
    int height = source.getHeight();
    int[] pixels = new int[width * height];
    source.getPixels(pixels, 0, width, 0, 0, width, height);

    for (int x = 0; x < pixels.length; ++x) {
        pixels[x] = (pixels[x] == Color.BLACK) ? color : pixels[x];
    }

    Bitmap out = Bitmap.createBitmap(width, height, source.getConfig());
    out.setPixels(pixels, 0, width, 0, 0, width, height);
    return out;
}

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From source file:Main.java

public static Bitmap olderImage(Bitmap bm) {

    int width = bm.getWidth();
    int height = bm.getHeight();
    int color;//from w w  w . j a  v  a2 s . c  o m
    int r, g, b, a;

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

    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];

    bm.getPixels(oldPx, 0, width, 0, 0, width, height);

    for (int i = 0; i < oldPx.length; i++) {
        color = oldPx[i];
        r = Color.red(color);
        g = Color.green(color);
        b = Color.blue(color);
        a = Color.alpha(color);

        r = (int) (0.393 * r + 0.769 * g + 0.189 * b);
        g = (int) (0.349 * r + 0.686 * g + 0.168 * b);
        b = (int) (0.272 * r + 0.534 * g + 0.131 * b);

        if (r > 255) {
            r = 255;
        } else if (r < 0) {
            r = 0;
        }

        if (g > 255) {
            g = 255;
        } else if (g < 0) {
            g = 0;
        }

        if (b > 255) {
            b = 255;
        } else if (b < 0) {
            b = 0;
        }

        newPx[i] = Color.argb(a, r, g, b);
    }

    bitmap.setPixels(newPx, 0, width, 0, 0, width, height);
    return bitmap;
}

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From source file:Main.java

public static Bitmap handleImagePixelsRelief(Bitmap bm) {
    Bitmap bmp = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);
    int width = bm.getWidth();
    int height = bm.getHeight();
    int color = 0, colorBefore = 0;
    int a, r, g, b;
    int r1, g1, b1;

    int[] oldPx = new int[width * height];
    int[] newPx = new int[width * height];

    bm.getPixels(oldPx, 0, bm.getWidth(), 0, 0, width, height);
    for (int i = 1; i < width * height; i++) {
        colorBefore = oldPx[i - 1];//from w  w w. j  av a 2 s.c  om
        a = Color.alpha(colorBefore);
        r = Color.red(colorBefore);
        g = Color.green(colorBefore);
        b = Color.blue(colorBefore);

        color = oldPx[i];
        r1 = Color.red(color);
        g1 = Color.green(color);
        b1 = Color.blue(color);

        r = (r - r1 + 127);
        g = (g - g1 + 127);
        b = (b - b1 + 127);
        if (r > 255) {
            r = 255;
        }
        if (g > 255) {
            g = 255;
        }
        if (b > 255) {
            b = 255;
        }
        newPx[i] = Color.argb(a, r, g, b);
    }
    bmp.setPixels(newPx, 0, width, 0, 0, width, height);
    return bmp;
}

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From source file:com.figo.campaignhelper.GenerateActivity.java

Bitmap encodeAsBitmap(String contents) throws WriterException {
    String contentsToEncode = contents;
    if (contentsToEncode == null) {
        return null;
    }/*w w  w  . j  a  v a 2s. c om*/
    Map<EncodeHintType, Object> hints = null;
    String encoding = guessAppropriateEncoding(contentsToEncode);
    if (encoding != null) {
        hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
        hints.put(EncodeHintType.CHARACTER_SET, encoding);
    }
    MultiFormatWriter writer = new MultiFormatWriter();

    WindowManager manager = (WindowManager) getSystemService(WINDOW_SERVICE);
    Display display = manager.getDefaultDisplay();
    int widthD = display.getWidth();
    int heightD = display.getHeight();
    int dimension = widthD < heightD ? widthD : heightD;
    dimension = dimension * 7 / 8;

    BitMatrix result = writer.encode(contentsToEncode, BarcodeFormat.QR_CODE, dimension, dimension, hints);
    int width = result.getWidth();
    int height = result.getHeight();
    int[] pixels = new int[width * height];
    for (int y = 0; y < height; y++) {
        int offset = y * width;
        for (int x = 0; x < width; x++) {
            pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.WHITE;
        }
    }

    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
}

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