Examples with ColorMatrix android.graphics.ColorMatrix used on opensource projects

Example 16 with ColorMatrix

use of android.graphics.ColorMatrix in project android_frameworks_base by ResurrectionRemix.

the class ImageHelper method toGrayscale.

private static Bitmap toGrayscale(Bitmap bmpOriginal) {
    int width, height;
    height = bmpOriginal.getHeight();
    width = bmpOriginal.getWidth();
    Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas c = new Canvas(bmpGrayscale);
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    ColorMatrix cm = new ColorMatrix();
    final Rect rect = new Rect(0, 0, width, height);
    cm.setSaturation(0);
    ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);
    paint.setColorFilter(f);
    c.drawBitmap(bmpOriginal, rect, rect, paint);
    return bmpGrayscale;
}

Example 17 with ColorMatrix

use of android.graphics.ColorMatrix in project android_frameworks_base by ResurrectionRemix.

the class ColorHelper method getColorFilter.

public static ColorMatrixColorFilter getColorFilter(int color) {
    float r = Color.red(color) / 255f;
    float g = Color.green(color) / 255f;
    float b = Color.blue(color) / 255f;
    ColorMatrix cm = new ColorMatrix(new float[] { r, 0, 0, 0, 0, 0, g, 0, 0, 0, 0, 0, b, 0, 0, 0, 0, 0, 1, 0 });
    ColorMatrixColorFilter cf = new ColorMatrixColorFilter(cm);
    return cf;
}

Example 18 with ColorMatrix

use of android.graphics.ColorMatrix in project android_frameworks_base by ResurrectionRemix.

the class ColorHelper method toGrayscale.

private static Bitmap toGrayscale(Bitmap bmpOriginal) {
    int width, height;
    height = bmpOriginal.getHeight();
    width = bmpOriginal.getWidth();
    Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    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;
}

Example 19 with ColorMatrix

use of android.graphics.ColorMatrix in project UltimateAndroid by cymcsg.

the class SquareProgressBar method setImageGrayscale.

/**
	 * You can set the image to b/w with this method. Works fine with the
	 * opacity.
	 * 
	 * @param greyscale
	 *            true if the grayscale should be activated.
	 * @since 1.2.0
	 */
public void setImageGrayscale(boolean greyscale) {
    this.greyscale = greyscale;
    if (greyscale) {
        ColorMatrix matrix = new ColorMatrix();
        matrix.setSaturation(0);
        imageView.setColorFilter(new ColorMatrixColorFilter(matrix));
    } else {
        imageView.setColorFilter(null);
    }
}

Example 20 with ColorMatrix

use of android.graphics.ColorMatrix in project Lightning-Browser by anthonycr.

the class LightningView method setColorMode.

/**
     * Sets the current rendering color of the WebView instance
     * of the current LightningView. The for modes are normal
     * rendering (0), inverted rendering (1), grayscale rendering (2),
     * and inverted grayscale rendering (3)
     *
     * @param mode the integer mode to set as the rendering mode.
     *             see the numbers in documentation above for the
     *             values this method accepts.
     */
private void setColorMode(int mode) {
    mInvertPage = false;
    switch(mode) {
        case 0:
            mPaint.setColorFilter(null);
            // setSoftwareRendering(); // Some devices get segfaults
            // in the WebView with Hardware Acceleration enabled,
            // the only fix is to disable hardware rendering
            setNormalRendering();
            mInvertPage = false;
            break;
        case 1:
            ColorMatrixColorFilter filterInvert = new ColorMatrixColorFilter(sNegativeColorArray);
            mPaint.setColorFilter(filterInvert);
            setHardwareRendering();
            mInvertPage = true;
            break;
        case 2:
            ColorMatrix cm = new ColorMatrix();
            cm.setSaturation(0);
            ColorMatrixColorFilter filterGray = new ColorMatrixColorFilter(cm);
            mPaint.setColorFilter(filterGray);
            setHardwareRendering();
            break;
        case 3:
            ColorMatrix matrix = new ColorMatrix();
            matrix.set(sNegativeColorArray);
            ColorMatrix matrixGray = new ColorMatrix();
            matrixGray.setSaturation(0);
            ColorMatrix concat = new ColorMatrix();
            concat.setConcat(matrix, matrixGray);
            ColorMatrixColorFilter filterInvertGray = new ColorMatrixColorFilter(concat);
            mPaint.setColorFilter(filterInvertGray);
            setHardwareRendering();
            mInvertPage = true;
            break;
        case 4:
            ColorMatrixColorFilter IncreaseHighContrast = new ColorMatrixColorFilter(sIncreaseContrastColorArray);
            mPaint.setColorFilter(IncreaseHighContrast);
            setHardwareRendering();
            break;
    }
}