android.graphics.ColorMatrix#setSaturation

Source File: ArcusProductFragment.java From arcusandroid with Apache License 2.0

6 votes

/**
 * convert the current screen color to grey
 * @param apply apply grey scale or not
 */
private void applyGreyScale(final boolean apply){

    ColorMatrix cm = new ColorMatrix();
    cm.setSaturation(0f);
    final ColorFilter filter = new ColorMatrixColorFilter(cm);

    if (apply) {
        if (deviceImage != null) this.deviceImage.setColorFilter(filter);
        if (this.leftNav != null) this.leftNav.setColorFilter(null);
        if (this.rightNav != null) this.rightNav.setColorFilter(null);
        if (this.bottomView != null && !isBottomViewAlerting) this.bottomView.getBackground().setColorFilter(filter);
    } else {
        if (deviceImage != null) this.deviceImage.setColorFilter(null);
        if (this.leftNav != null) this.leftNav.setColorFilter(null);
        if (this.rightNav != null) this.rightNav.setColorFilter(null);
        if (this.bottomView != null && !isBottomViewAlerting) this.bottomView.getBackground().setColorFilter(null);
    }
}

Source File: MainActivity.java From ripple with GNU General Public License v3.0

6 votes

void setEnabled(boolean enabled) {
    if (enabled) {
        editableLabel.setVisibility(View.VISIBLE);
        appLabelView.setEnabled(true);
        iconView.setEnabled(true);
        iconView.setColorFilter(null);
    } else {
        editableLabel.setVisibility(View.GONE);
        appLabelView.setEnabled(false);
        iconView.setEnabled(false);
        // grey out app icon when disabled
        ColorMatrix matrix = new ColorMatrix();
        matrix.setSaturation(0);
        ColorMatrixColorFilter filter = new ColorMatrixColorFilter(matrix);
        iconView.setColorFilter(filter);
    }
}

Source File: ImageFilterUtils.java From DevUtils with Apache License 2.0

6 votes

/**
 * 饱和度处理
 * @param bitmap          待操作源图片
 * @param saturationValue 新的饱和度值
 * @return 改变了饱和度值之后的图片
 */
public static Bitmap saturation(final Bitmap bitmap, final int saturationValue) {
    if (bitmap == null) return null;
    try {
        // 计算出符合要求的饱和度值
        float newSaturationValue = saturationValue * 1.0F / 127;
        // 创建一个颜色矩阵
        ColorMatrix saturationColorMatrix = new ColorMatrix();
        // 设置饱和度值
        saturationColorMatrix.setSaturation(newSaturationValue);
        // 创建一个画笔并设置其颜色过滤器
        Paint paint = new Paint();
        paint.setColorFilter(new ColorMatrixColorFilter(saturationColorMatrix));
        // 创建一个新的图片并创建画布
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(newBitmap);
        // 将源图片使用给定的画笔画到画布上
        canvas.drawBitmap(bitmap, 0, 0, paint);
        return newBitmap;
    } catch (Exception e) {
        LogPrintUtils.eTag(TAG, e, "saturation");
    }
    return null;
}

Source File: MyWatchFaceService.java From io2015-codelabs with Apache License 2.0

5 votes

private void initGrayBackgroundBitmap() {
    mGrayBackgroundBitmap = Bitmap.createBitmap(mBackgroundBitmap.getWidth(),
            mBackgroundBitmap.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(mGrayBackgroundBitmap);
    Paint grayPaint = new Paint();
    ColorMatrix colorMatrix = new ColorMatrix();
    colorMatrix.setSaturation(0);
    ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrix);
    grayPaint.setColorFilter(filter);
    canvas.drawBitmap(mBackgroundBitmap, 0, 0, grayPaint);
}

Source File: FoldingLayoutActivity.java From FoldingLayout with Apache License 2.0

5 votes

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_fold);

    mImageView = (ImageView)findViewById(R.id.image_view);
    mImageView.setPadding(ANTIALIAS_PADDING, ANTIALIAS_PADDING, ANTIALIAS_PADDING,
            ANTIALIAS_PADDING);
    mImageView.setScaleType(ImageView.ScaleType.FIT_XY);
    mImageView.setImageDrawable(getResources().getDrawable(R.drawable.image));

    mTextureView = new TextureView(this);
    mTextureView.setSurfaceTextureListener(mSurfaceTextureListener);

    mAnchorSeekBar = (SeekBar)findViewById(R.id.anchor_seek_bar);
    mFoldLayout = (FoldingLayout)findViewById(R.id.fold_view);
    mFoldLayout.setBackgroundColor(Color.BLACK);
    mFoldLayout.setFoldListener(mOnFoldListener);

    mTouchSlop = ViewConfiguration.get(this).getScaledTouchSlop();

    mAnchorSeekBar.setOnSeekBarChangeListener(mSeekBarChangeListener);

    mScrollGestureDetector = new GestureDetector(this, new ScrollGestureDetector());
    mItemSelectedListener = new ItemSelectedListener();

    mDefaultPaint = new Paint();
    mSepiaPaint = new Paint();

    ColorMatrix m1 = new ColorMatrix();
    ColorMatrix m2 = new ColorMatrix();
    m1.setSaturation(0);
    m2.setScale(1f, .95f, .82f, 1.0f);
    m1.setConcat(m2, m1);
    mSepiaPaint.setColorFilter(new ColorMatrixColorFilter(m1));
}

Source File: SquareProgressBar.java From UltimateAndroid with Apache License 2.0

5 votes

/**
 * 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);
	}
}

Source File: UTilitiesActivity.java From utexas-utilities with Apache License 2.0

5 votes

private void disableFeature(final ImageView featureButton) {
    // Some sort of bug in Android 4.x causes the ImageView to disappear if a ColorMatrix
    // is applied, so only do it in 2.3/5.0+
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        ColorMatrix matrix = new ColorMatrix();
        matrix.setSaturation(0);
        ColorMatrixColorFilter filter = new ColorMatrixColorFilter(matrix);
        featureButton.setColorFilter(filter);
    }
    Utility.setImageAlpha(featureButton, 75);
    featureButton.setOnClickListener(disabledFeatureButtonListener);
}

Source File: ImageFilterUtils.java From DevUtils with Apache License 2.0

5 votes

/**
 * 亮度、色相、饱和度处理
 * @param bitmap          待操作源图片
 * @param lumValue        亮度值
 * @param hueValue        色相值
 * @param saturationValue 饱和度值
 * @return 亮度、色相、饱和度处理后的图片
 */
public static Bitmap lumHueSaturation(final Bitmap bitmap, final int lumValue, final int hueValue, final int saturationValue) {
    if (bitmap == null) return null;
    try {
        // 计算出符合要求的饱和度值
        float newSaturationValue = saturationValue * 1.0F / 127;
        // 计算出符合要求的亮度值
        float newlumValue = lumValue * 1.0F / 127;
        // 计算出符合要求的色相值
        float newHueValue = (hueValue - 127) * 1.0F / 127 * 180;
        // 创建一个颜色矩阵并设置其饱和度
        ColorMatrix colorMatrix = new ColorMatrix();
        // 设置饱和度值
        colorMatrix.setSaturation(newSaturationValue);
        // 设置亮度值
        colorMatrix.setScale(newlumValue, newlumValue, newlumValue, 1);
        // 控制让红色区在色轮上旋转的角度
        colorMatrix.setRotate(0, newHueValue);
        // 控制让绿红色区在色轮上旋转的角度
        colorMatrix.setRotate(1, newHueValue);
        // 控制让蓝色区在色轮上旋转的角度
        colorMatrix.setRotate(2, newHueValue);
        // 创建一个画笔并设置其颜色过滤器
        Paint paint = new Paint();
        paint.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
        // 创建一个新的图片并创建画布
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(newBitmap);
        // 将源图片使用给定的画笔画到画布上
        canvas.drawBitmap(bitmap, 0, 0, paint);
        return newBitmap;
    } catch (Exception e) {
        LogPrintUtils.eTag(TAG, e, "lumHueSaturation");
    }
    return null;
}

Source File: ColorMatrixActivity.java From AndroidDemo with Apache License 2.0

5 votes

private Bitmap getGreyBitmap(Bitmap bitmap) {
    Bitmap bmp = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bmp);
    Paint paint = new Paint();
    ColorMatrix matrix = new ColorMatrix();
    //饱和度设置为0则为灰度图
    matrix.setSaturation(0);
    paint.setColorFilter(new ColorMatrixColorFilter(matrix));
    canvas.drawBitmap(bitmap, 0, 0, paint);
    return bmp;
}

Source File: BezelImageView.java From Lollipop-AppCompat-Widgets-Skeleton with Apache License 2.0

5 votes

public BezelImageView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    // Attribute initialization
    final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.BezelImageView,
            defStyle, 0);

    mMaskDrawable = a.getDrawable(R.styleable.BezelImageView_maskDrawable);
    if (mMaskDrawable != null) {
        mMaskDrawable.setCallback(this);
    }

    mBorderDrawable = a.getDrawable(R.styleable.BezelImageView_borderDrawable);
    if (mBorderDrawable != null) {
        mBorderDrawable.setCallback(this);
    }

    mDesaturateOnPress = a.getBoolean(R.styleable.BezelImageView_desaturateOnPress,
            mDesaturateOnPress);

    a.recycle();

    // Other initialization
    mBlackPaint = new Paint();
    mBlackPaint.setColor(0xff000000);
    
    mMaskedPaint = new Paint();
    mMaskedPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));

    // Always want a cache allocated.
    mCacheBitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888);

    if (mDesaturateOnPress) {
        // Create a desaturate color filter for pressed state.
        ColorMatrix cm = new ColorMatrix();
        cm.setSaturation(0);
        mDesaturateColorFilter = new ColorMatrixColorFilter(cm);
    }
}

Source File: ImageCropActivity.java From AndroidDocumentScanner with MIT License

5 votes

private void invertColor() {
    if (!isInverted) {
        Bitmap bmpMonochrome = Bitmap.createBitmap(cropImage.getWidth(), cropImage.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bmpMonochrome);
        ColorMatrix ma = new ColorMatrix();
        ma.setSaturation(0);
        Paint paint = new Paint();
        paint.setColorFilter(new ColorMatrixColorFilter(ma));
        canvas.drawBitmap(cropImage, 0, 0, paint);
        cropImage = bmpMonochrome.copy(bmpMonochrome.getConfig(), true);
    } else {
        cropImage = cropImage.copy(cropImage.getConfig(), true);
    }
    isInverted = !isInverted;
}

Source File: ColorFilterRelativeLayout.java From SoloPi with Apache License 2.0

5 votes

/**
 * 重设饱和度
 * @param saturation
 */
public void setSaturation(float saturation) {
    ColorMatrix cm = new ColorMatrix();
    cm.setSaturation(saturation);
    m_paint.setColorFilter(new ColorMatrixColorFilter(cm));

    invalidate();
}

Source File: ViewUtil.java From BaseProject with Apache License 2.0

5 votes

/**
 * 修改一张源位图的饱和度来生成一个新位图
 * @param sourceBitmap 源位图
 * @param expectantSaturation 期望的饱和度值
 * @return 更改饱和度后的新位图
 */
public static Bitmap changeSrcBitmapSaturation(Bitmap sourceBitmap,int expectantSaturation) {
    int width = sourceBitmap.getWidth();
    int height = sourceBitmap.getHeight();
    Bitmap compoundResultBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(compoundResultBitmap);
    Paint paint = new Paint();
    ColorMatrix colorMatrix = new ColorMatrix();
    colorMatrix.setSaturation(expectantSaturation);
    ColorMatrixColorFilter colorMatrixFilter = new ColorMatrixColorFilter(colorMatrix);
    paint.setColorFilter(colorMatrixFilter);
    canvas.drawBitmap(sourceBitmap, 0, 0, paint);
    return compoundResultBitmap;
}

Source File: EarthWatchFaceService.java From earth with GNU General Public License v3.0

5 votes

@Override
public void onCreate(SurfaceHolder holder) {
    super.onCreate(holder);

    region = new Rect();

    paint = new Paint();
    paint.setFilterBitmap(true);

    ColorMatrix cm = new ColorMatrix();
    cm.setSaturation(0);

    ambientFilter = new ColorMatrixColorFilter(cm);
}

Source File: UEImage.java From Auie with GNU General Public License v2.0

5 votes

public UEImage addFilterToGray(){
	Drawable drawable = bitmapToDrawable();
	drawable.mutate();
	ColorMatrix matrix = new ColorMatrix();
	matrix.setSaturation(0);
	drawable.setColorFilter(new ColorMatrixColorFilter(matrix));
	drawableToBitmap(drawable);
	return this;
}

Source File: BezelImageView.java From Abelana-Android with Apache License 2.0

5 votes

public BezelImageView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    // Attribute initialization
    final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.BezelImageView,
            defStyle, 0);

    mMaskDrawable = a.getDrawable(R.styleable.BezelImageView_maskDrawable);
    if (mMaskDrawable != null) {
        mMaskDrawable.setCallback(this);
    }

    mBorderDrawable = a.getDrawable(R.styleable.BezelImageView_borderDrawable);
    if (mBorderDrawable != null) {
        mBorderDrawable.setCallback(this);
    }

    mDesaturateOnPress = a.getBoolean(R.styleable.BezelImageView_desaturateOnPress,
            mDesaturateOnPress);

    a.recycle();

    // Other initialization
    mBlackPaint = new Paint();
    mBlackPaint.setColor(0xff000000);

    mMaskedPaint = new Paint();
    mMaskedPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));

    // Always want a cache allocated.
    mCacheBitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888);

    if (mDesaturateOnPress) {
        // Create a desaturate color filter for pressed state.
        ColorMatrix cm = new ColorMatrix();
        cm.setSaturation(0);
        mDesaturateColorFilter = new ColorMatrixColorFilter(cm);
    }
}

Source File: BezelImageView.java From KlyphMessenger with MIT License

5 votes

public BezelImageView(Context context, AttributeSet attrs, int defStyle)
{
	super(context, attrs, defStyle);

	// Attribute initialization
	final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.BezelImageView, defStyle, 0);

	setMaskDrawable(a.getDrawable(R.styleable.BezelImageView_maskDrawable));

	setBorderDrawable(a.getDrawable(R.styleable.BezelImageView_borderDrawable));

	mDesaturateOnPress = a.getBoolean(R.styleable.BezelImageView_desaturateOnPress, mDesaturateOnPress);

	a.recycle();

	// Other initialization
	mBlackPaint = new Paint();
	mBlackPaint.setColor(0xff000000);

	mMaskedPaint = new Paint();
	mMaskedPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));

	// Always want a cache allocated.
	mCacheBitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888);

	if (mDesaturateOnPress)
	{
		// Create a desaturate color filter for pressed state.
		ColorMatrix cm = new ColorMatrix();
		cm.setSaturation(0);
		mDesaturateColorFilter = new ColorMatrixColorFilter(cm);
	}
}

Source File: BitmapUtil.java From AndroidStudyDemo with GNU General Public License v2.0

5 votes

/**
 * 亮度、色相、饱和度处理
 *
 * @param bitmap          原图
 * @param lumValue        亮度值
 * @param hueValue        色相值
 * @param saturationValue 饱和度值
 * @return 亮度、色相、饱和度处理后的图片
 */
public static Bitmap lumAndHueAndSaturation(Bitmap bitmap, int lumValue,
                                            int hueValue, int saturationValue) {
    // 计算出符合要求的饱和度值
    float newSaturationValue = saturationValue * 1.0F / 127;
    // 计算出符合要求的亮度值
    float newlumValue = lumValue * 1.0F / 127;
    // 计算出符合要求的色相值
    float newHueValue = (hueValue - 127) * 1.0F / 127 * 180;

    // 创建一个颜色矩阵并设置其饱和度
    ColorMatrix colorMatrix = new ColorMatrix();

    // 设置饱和度值
    colorMatrix.setSaturation(newSaturationValue);
    // 设置亮度值
    colorMatrix.setScale(newlumValue, newlumValue, newlumValue, 1);
    // 控制让红色区在色轮上旋转的角度
    colorMatrix.setRotate(0, newHueValue);
    // 控制让绿红色区在色轮上旋转的角度
    colorMatrix.setRotate(1, newHueValue);
    // 控制让蓝色区在色轮上旋转的角度
    colorMatrix.setRotate(2, newHueValue);

    // 创建一个画笔并设置其颜色过滤器
    Paint paint = new Paint();
    paint.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
    // 创建一个新的图片并创建画布
    Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(),
            bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(newBitmap);
    // 将原图使用给定的画笔画到画布上
    canvas.drawBitmap(bitmap, 0, 0, paint);
    return newBitmap;
}

Source File: BlackberryVolumePanel.java From Noyze with Apache License 2.0

4 votes

@TargetApi(Build.VERSION_CODES.KITKAT)
@Override
public void onPlayStateChanged(Pair<MediaMetadataCompat, PlaybackStateCompat> mediaInfo) {
    if (!created) return;
    super.onPlayStateChanged(mediaInfo);
    LOGI(TAG, "onPlayStateChanged()");

    // if (mMusicActive) transition.beginDelayedTransition(mediaContainer, TransitionCompat.KEY_AUDIO_TRANSITION);

    // Update button visibility based on the transport flags.
    /*if (null == info || info.mTransportControlFlags <= 0) {
        mBtnNext.setVisibility(View.VISIBLE);
        mBtnPrev.setVisibility(View.VISIBLE);
        playPause.setVisibility(View.VISIBLE);
    } else {
        final int flags = info.mTransportControlFlags;
        setVisibilityBasedOnFlag(mBtnPrev, flags, RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS);
        setVisibilityBasedOnFlag(mBtnNext, flags, RemoteControlClient.FLAG_KEY_MEDIA_NEXT);
        setVisibilityBasedOnFlag(playPause, flags,
                          RemoteControlClient.FLAG_KEY_MEDIA_PLAY
                        | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE
                        | RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE
                        | RemoteControlClient.FLAG_KEY_MEDIA_STOP);
    }*/

    // If we have album art, use it!
    if (mMusicActive) {
        Bitmap albumArtBitmap = mediaInfo.first.getBitmap(MediaMetadataCompat.METADATA_KEY_ALBUM_ART);
        if (null != albumArtBitmap) {
            LOGI(TAG, "Loading artwork bitmap.");
            albumArt.setImageAlpha(0xFF);
            albumArt.setColorFilter(null);
            albumArt.setImageBitmap(albumArtBitmap);
            hasAlbumArt = true;
        } else {
            hasAlbumArt = false;
        }
    }

    // Next, we'll try to display the app's icon.
    if (mMusicActive && !hasAlbumArt && !TextUtils.isEmpty(musicPackageName)) {
        Drawable appIcon = getAppIcon(musicPackageName);
        if (null != appIcon) {
            LOGI(TAG, "Loading app icon instead of album art.");
            final int bbColor = getResources().getColor(R.color.bb_icons);
            final ColorMatrix cm = new ColorMatrix();
            cm.setSaturation(0);
            albumArt.setColorFilter(new ColorMatrixColorFilter(cm));
            appIcon.setColorFilter(bbColor, PorterDuff.Mode.MULTIPLY);
            albumArt.setImageAlpha(0xEF);
            albumArt.setImageDrawable(appIcon);
            hasAlbumArt = true;
        } else {
            hasAlbumArt = false;
        }
    }

    if (!mMusicActive) hasAlbumArt = false;

    albumArtContainer.setVisibility((hasAlbumArt) ? View.VISIBLE : View.GONE);
    if (mMusicActive) setMusicPanelVisibility(View.VISIBLE);
    if (!mMusicActive) {
        hideMusicWithPanel = true;
    }

    updatePlayState();

    String sTitle = mediaInfo.first.getString(MediaMetadataCompat.METADATA_KEY_TITLE);
    String sArtist = mediaInfo.first.getString(MediaMetadataCompat.METADATA_KEY_ARTIST);
    song.setText(sTitle);
    artist.setText(sArtist);
}

Source File: WidgetPreviewLoader.java From Trebuchet with GNU General Public License v3.0

4 votes

private Bitmap generateShortcutPreview(
        Launcher launcher, ResolveInfo info, int maxWidth, int maxHeight, Bitmap preview) {
    final Canvas c = new Canvas();
    if (preview == null) {
        preview = Bitmap.createBitmap(maxWidth, maxHeight, Config.ARGB_8888);
        c.setBitmap(preview);
    } else if (preview.getWidth() != maxWidth || preview.getHeight() != maxHeight) {
        throw new RuntimeException("Improperly sized bitmap passed as argument");
    } else {
        // Reusing bitmap. Clear it.
        c.setBitmap(preview);
        c.drawColor(0, PorterDuff.Mode.CLEAR);
    }

    Drawable icon = mutateOnMainThread(mIconCache.getFullResIcon(info.activityInfo));
    icon.setFilterBitmap(true);

    // Draw a desaturated/scaled version of the icon in the background as a watermark
    ColorMatrix colorMatrix = new ColorMatrix();
    colorMatrix.setSaturation(0);
    icon.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
    icon.setAlpha((int) (255 * 0.06f));

    Resources res = mContext.getResources();
    int paddingTop = res.getDimensionPixelOffset(R.dimen.shortcut_preview_padding_top);
    int paddingLeft = res.getDimensionPixelOffset(R.dimen.shortcut_preview_padding_left);
    int paddingRight = res.getDimensionPixelOffset(R.dimen.shortcut_preview_padding_right);
    int scaledIconWidth = (maxWidth - paddingLeft - paddingRight);
    icon.setBounds(paddingLeft, paddingTop,
            paddingLeft + scaledIconWidth, paddingTop + scaledIconWidth);
    icon.draw(c);

    // Draw the final icon at top left corner.
    // TODO: use top right for RTL
    int appIconSize = launcher.getDeviceProfile().iconSizePx;

    icon.setAlpha(255);
    icon.setColorFilter(null);
    icon.setBounds(0, 0, appIconSize, appIconSize);
    icon.draw(c);

    c.setBitmap(null);
    return preview;
}

Java Code Examples for android.graphics.ColorMatrix#setSaturation()