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

Example 41 with ColorMatrix

use of android.graphics.ColorMatrix in project AndroidUtilCode by Blankj.

the class ImageUtils method toGray.

/**
     * 转为灰度图片
     *
     * @param src     源图片
     * @param recycle 是否回收
     * @return 灰度图
     */
public static Bitmap toGray(Bitmap src, boolean recycle) {
    if (isEmptyBitmap(src))
        return null;
    Bitmap grayBitmap = Bitmap.createBitmap(src.getWidth(), src.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(grayBitmap);
    Paint paint = new Paint();
    ColorMatrix colorMatrix = new ColorMatrix();
    colorMatrix.setSaturation(0);
    ColorMatrixColorFilter colorMatrixColorFilter = new ColorMatrixColorFilter(colorMatrix);
    paint.setColorFilter(colorMatrixColorFilter);
    canvas.drawBitmap(src, 0, 0, paint);
    if (recycle && !src.isRecycled())
        src.recycle();
    return grayBitmap;
}

Example 42 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 43 with ColorMatrix

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

the class LockscreenShortcutsActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.lockscreen_shortcuts);
    getActionBar().setDisplayHomeAsUpEnabled(true);
    mPicker = new ShortcutPickHelper(this, this);
    mShortcutHelper = new LockscreenShortcutsHelper(this, this);
    ColorMatrix cm = new ColorMatrix();
    cm.setSaturation(0);
    mFilter = new ColorMatrixColorFilter(cm);
    ImageView unlockButton = (ImageView) findViewById(R.id.middle_button);
    mDefaultTintList = unlockButton.getImageTintList();
    createActionList();
    initiateViews();
    updateDrawables();
}

Example 44 with ColorMatrix

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

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 45 with ColorMatrix

use of android.graphics.ColorMatrix in project smartmodule by carozhu.

the class Bitmaputil method toGrayscale.

/**
     * 图片去色,返回灰度图片
     *
     * @param bmpOriginal 传入的图片
     * @return 去色后的图片
     */
public static Bitmap toGrayscale(Bitmap bmpOriginal) {
    int width, height;
    height = bmpOriginal.getHeight();
    width = bmpOriginal.getWidth();
    Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, 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;
}