Example usage for android.graphics ColorMatrixColorFilter ColorMatrixColorFilter

Introduction

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

Prototype

public ColorMatrixColorFilter(@NonNull float[] array)

Source Link

Document

Create a color filter that transforms colors through a 4x5 color matrix.

Usage

From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ???/*from   ww  w. j  a  v a  2s  .  com*/
 * 
 * @param bitmap
 *            
 * @param lumValue
 *            
 * @param hueValue
 *            
 * @param saturationValue
 *            
 * @return ????
 */
public static Bitmap lumAndHueAndSaturation(Bitmap bitmap, int lumValue, int hueValue, int saturationValue) {
    // ??
    float newSaturationValue = saturationValue * 1.0F / 127;
    // ??
    float newlumValue = lumValue * 1.0F / 127;
    // ??
    float newHueValue = (hueValue - 127) * 1.0F / 127 * 180;

    // 
    ColorMatrix colorMatrix = new ColorMatrix();

    // 
    colorMatrix.setSaturation(newSaturationValue);
    // 
    colorMatrix.setScale(newlumValue, newlumValue, newlumValue, 1);
    // 
    colorMatrix.setRotate(0, newHueValue);
    // 
    colorMatrix.setRotate(1, newHueValue);
    // ?
    colorMatrix.setRotate(2, newHueValue);

    // 
    Paint paint = new Paint();
    paint.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
    // 
    Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(newBitmap);
    // 
    canvas.drawBitmap(bitmap, 0, 0, paint);
    return newBitmap;
}

From source file:com.ksharkapps.musicnow.ui.activities.AudioPlayerActivity.java

protected Drawable convertToGrayscale(Drawable drawable) {
    ColorMatrix matrix = new ColorMatrix();
    matrix.setSaturation(0);/*  w ww.  ja  v a 2 s  .c  o m*/

    ColorMatrixColorFilter filter = new ColorMatrixColorFilter(matrix);

    drawable.setColorFilter(filter);

    return drawable;
}

From source file:org.appcelerator.titanium.util.TiUIHelper.java

public static ColorFilter createColorFilterForOpacity(final float opacity) {
    // 5x4 identity color matrix + fade the alpha to achieve opacity
    float[] matrix = { 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, opacity, 0 };

    return new ColorMatrixColorFilter(new ColorMatrix(matrix));
}

From source file:com.android.launcher2.AsyncTaskCallback.java

private Bitmap getShortcutPreview(ResolveInfo info, int maxWidth, int maxHeight) {
    Bitmap tempBitmap = mCachedShortcutPreviewBitmap.get();
    final Canvas c = mCachedShortcutPreviewCanvas.get();
    if (tempBitmap == null || tempBitmap.getWidth() != maxWidth || tempBitmap.getHeight() != maxHeight) {
        tempBitmap = Bitmap.createBitmap(maxWidth, maxHeight, Config.ARGB_8888);
        mCachedShortcutPreviewBitmap.set(tempBitmap);
    } else {/*from  w  w w. ja  v a  2  s  . c  o  m*/
        c.setBitmap(tempBitmap);
        c.drawColor(0, PorterDuff.Mode.CLEAR);
        c.setBitmap(null);
    }
    // Render the icon
    Drawable icon = mIconCache.getFullResIcon(info);

    int paddingTop = getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_top);
    int paddingLeft = getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_left);
    int paddingRight = getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_right);

    int scaledIconWidth = (maxWidth - paddingLeft - paddingRight);

    renderDrawableToBitmap(icon, tempBitmap, paddingLeft, paddingTop, scaledIconWidth, scaledIconWidth);

    Bitmap preview = Bitmap.createBitmap(maxWidth, maxHeight, Config.ARGB_8888);
    c.setBitmap(preview);
    Paint p = mCachedShortcutPreviewPaint.get();
    if (p == null) {
        p = new Paint();
        ColorMatrix colorMatrix = new ColorMatrix();
        colorMatrix.setSaturation(0);
        p.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
        p.setAlpha((int) (255 * 0.06f));
        //float density = 1f;
        //p.setMaskFilter(new BlurMaskFilter(15*density, BlurMaskFilter.Blur.NORMAL));
        mCachedShortcutPreviewPaint.set(p);
    }
    c.drawBitmap(tempBitmap, 0, 0, p);
    c.setBitmap(null);

    renderDrawableToBitmap(icon, preview, 0, 0, mAppIconSize, mAppIconSize);

    return preview;
}

From source file:es.javocsoft.android.lib.toolbox.ToolBox.java

/**
 * Convers a Bitmap to grayscale./*from  www.  j av  a2 s .  com*/
 * 
 * @param bmpOriginal
 * @return
 */
public static Bitmap media_getGrayScale(Bitmap bmpOriginal) {
    int width, height;
    height = bmpOriginal.getHeight();
    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;
}

From source file:com.skytree.epubtest.BookViewActivity.java

public ColorFilter makeColorFilter(int color) {
    int red = (color & 0xFF0000) / 0xFFFF;
    int green = (color & 0xFF00) / 0xFF;
    int blue = color & 0xFF;

    float[] matrix = { 0, 0, 0, 0, red, 0, 0, 0, 0, green, 0, 0, 0, 0, blue, 0, 0, 0, 1, 0 };

    ColorFilter colorFilter = new ColorMatrixColorFilter(matrix);
    return colorFilter;
}