下面列出了android.animation.FloatArrayEvaluator#android.graphics.ColorMatrixColorFilter 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* 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);
}
}
@Override protected ColorFilter getOnlineColorFilter() {
if (haloModel == null || mView == null) {
return null;
}
View colorOverlayView = mView.findViewById(R.id.color_overlay);
if (colorOverlayView == null) {
return null;
}
boolean applyFilter = haloModel.isOnline() && isVisible();
colorOverlayView.setVisibility(applyFilter ? View.VISIBLE : View.GONE);
if(applyFilter) {
float [] colorHSV = new float[]{ haloModel.getHue(), (haloModel.getSaturation() / 100f), 1f};
colorOverlayView.setBackgroundColor(Color.HSVToColor(25, colorHSV));
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0f);
return new ColorMatrixColorFilter(cm);
}
return null;
}
@Override
public void updateBackground(boolean isConnected) {
try {
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0f);
final ColorFilter filter = new ColorMatrixColorFilter(cm);
final View bgView = ImageManager.getWallpaperView();
if (bgView != null) {
final Drawable bgDrawable = bgView.getBackground();
if (bgDrawable != null) {
bgDrawable.setColorFilter(filter);
}
}
}catch (Exception e){
logger.error("Can't change background color filter: {}", e);
}
}
@Override
protected ColorFilter getOnlineColorFilter() {
View colorOverlayView = mView.findViewById(R.id.color_overlay);
if(getDeviceModel() != null && isVisible() && Light.COLORMODE_COLOR.equals(getDeviceModel().get(Light.ATTR_COLORMODE)) && !DeviceConnection.STATE_OFFLINE.equals(getDeviceModel().get(DeviceConnection.ATTR_STATE))) {
int colorOverlay = getColorFilterValue();
if(colorOverlay != 0) {
colorOverlayView.setVisibility(View.VISIBLE);
colorOverlayView.setBackgroundColor(colorOverlay);
//colorOverlayView.getBackground().setColorFilter(new PorterDuffColorFilter(colorOverlay, PorterDuff.Mode.SRC_OVER));
}
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0f);
return new ColorMatrixColorFilter(cm);
}
else {
colorOverlayView.setVisibility(View.GONE);
}
return null;
}
public void setNightMode(boolean nightMode) {
this.nightMode = nightMode;
if (nightMode) {
ColorMatrix colorMatrixInverted =
new ColorMatrix(new float[]{
-1, 0, 0, 0, 255,
0, -1, 0, 0, 255,
0, 0, -1, 0, 255,
0, 0, 0, 1, 0});
ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrixInverted);
paint.setColorFilter(filter);
} else {
paint.setColorFilter(null);
}
}
@Override
public Bitmap transform(@NonNull Bitmap source) {
int width = source.getWidth();
int height = source.getHeight();
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
ColorMatrix saturation = new ColorMatrix();
saturation.setSaturation(0f);
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(saturation));
canvas.drawBitmap(source, 0, 0, paint);
if (bitmap != source && !source.isRecycled()) {
source.recycle();
}
return bitmap;
}
@Override
public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
Bitmap source = resource.get();
int width = source.getWidth();
int height = source.getHeight();
Bitmap.Config config =
source.getConfig() != null ? source.getConfig() : Bitmap.Config.ARGB_8888;
Bitmap bitmap = mBitmapPool.get(width, height, config);
if (bitmap == null) {
bitmap = Bitmap.createBitmap(width, height, config);
}
Canvas canvas = new Canvas(bitmap);
ColorMatrix saturation = new ColorMatrix();
saturation.setSaturation(0f);
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(saturation));
canvas.drawBitmap(source, 0, 0, paint);
return BitmapResource.obtain(bitmap, mBitmapPool);
}
/**
* 调整照片的色调,饱和度,亮度
* MID_VALUE = 177; // 进度条的中间值
* @param bm 原图
* @param hue 色调 = (进度条进度 - MID_VALUE) * 1.0F / MIN_VALUE * 180
* @param saturation 饱和度 = 进度条进度 * 1.0F / MIN_VALUE;
* @param lum 亮度 = 进度条进度 * 1.0F / MIN_VALUE;
* @return 调整后的图片
*/
public static Bitmap handleImageEffect(Bitmap bm, int hue, int saturation, int lum) {
Bitmap bitmap = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
ColorMatrix hueMatrix = new ColorMatrix();
hueMatrix.setRotate(0,hue);
hueMatrix.setRotate(1,hue);
hueMatrix.setRotate(2, hue);
ColorMatrix saturationMatrix = new ColorMatrix();
saturationMatrix.setSaturation(saturation);
ColorMatrix lumMatrix = new ColorMatrix();
lumMatrix.setScale(lum,lum,lum,1);
ColorMatrix imageMatrix = new ColorMatrix();
imageMatrix.postConcat(hueMatrix);
imageMatrix.postConcat(saturationMatrix);
imageMatrix.postConcat(lumMatrix);
paint.setColorFilter(new ColorMatrixColorFilter(imageMatrix));
canvas.drawBitmap(bm,0,0,paint);
return bitmap;
}
/**
* 转为灰度图片
* @param bitmap 待操作源图片
* @return 灰度图
*/
public static Bitmap toGray(final Bitmap bitmap) {
if (bitmap == null) return null;
try {
Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());
Canvas canvas = new Canvas(newBitmap);
Paint paint = new Paint();
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.setSaturation(0);
ColorMatrixColorFilter colorMatrixColorFilter = new ColorMatrixColorFilter(colorMatrix);
paint.setColorFilter(colorMatrixColorFilter);
canvas.drawBitmap(bitmap, 0, 0, paint);
return newBitmap;
} catch (Exception e) {
LogPrintUtils.eTag(TAG, e, "toGray");
}
return null;
}
/**
* 亮度处理
* @param bitmap 待操作源图片
* @param lumValue 新的亮度值
* @return 改变了亮度值之后的图片
*/
public static Bitmap lum(final Bitmap bitmap, final int lumValue) {
if (bitmap == null) return null;
try {
// 计算出符合要求的亮度值
float newlumValue = lumValue * 1.0F / 127;
// 创建一个颜色矩阵
ColorMatrix lumColorMatrix = new ColorMatrix();
// 设置亮度值
lumColorMatrix.setScale(newlumValue, newlumValue, newlumValue, 1);
// 创建一个画笔并设置其颜色过滤器
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(lumColorMatrix));
// 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, "lum");
}
return null;
}
public PageWidget(Context context) {
super(context);
// TODO Auto-generated constructor stub
mPath0 = new Path();
mPath1 = new Path();
createDrawable();
mPaint = new Paint();
mPaint.setStyle(Paint.Style.FILL);
ColorMatrix cm = new ColorMatrix();
float array[] = { 0.55f, 0, 0, 0, 80.0f, 0, 0.55f, 0, 0, 80.0f, 0, 0,
0.55f, 0, 80.0f, 0, 0, 0, 0.2f, 0 };
cm.set(array);
mColorMatrixFilter = new ColorMatrixColorFilter(cm);
mMatrix = new Matrix();
mScroller = new Scroller(getContext());
mTouch.x = 0.01f;
mTouch.y = 0.01f;
}
private void init(Context context, AttributeSet attributeSet) {
TypedArray typedArray = context.obtainStyledAttributes(attributeSet, R.styleable.ProgressableImageView);
dividerColor = typedArray.getColor(R.styleable.ProgressableImageView_dividerColor, DEFAULT_DIVIDER_COLOR);
dividerWidth = typedArray.getDimension(R.styleable.ProgressableImageView_dividerWidth, DEFAULT_DIVIDER_WIDTH);
progress = typedArray.getFloat(R.styleable.ProgressableImageView_progress, DEFAULT_PROGRESS);
direction = ProgressDirection.fromId(typedArray.getInt(R.styleable.ProgressableImageView_direction, DEFAULT_DIRECTION));
touchEnabled = typedArray.getBoolean(R.styleable.ProgressableImageView_touchEnabled, DEFAULT_TOUCHABLE);
typedArray.recycle();
if (progress > 1 || progress < 0) {
progress = DEFAULT_PROGRESS;
}
grayPaint = new Paint();
ColorMatrix matrix = new ColorMatrix();
matrix.setSaturation(0);
ColorMatrixColorFilter filter = new ColorMatrixColorFilter(matrix);
grayPaint.setColorFilter(filter);
dividerPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
dividerPaint.setStyle(Paint.Style.FILL);
updateDividerColor(dividerColor);
}
@NonNull
@Override
public Bitmap process(Bitmap raw) {
//Gray level
int width = raw.getWidth();
int height = raw.getHeight();
Bitmap bmpGray = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
Canvas c = new Canvas(bmpGray);
Paint paint = new Paint();
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0);
ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);
paint.setColorFilter(f);
c.drawBitmap(raw, 0, 0, paint);
return bmpGray;
}
public static Bitmap convertToGrayscale(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;
}
/**
* Returns a gray scale version of the input bitmap.
*
* @param bmpOriginal the image to convert.
* @return gray scale version.
*/
static Bitmap toGrayScale(Bitmap bmpOriginal) {
int height = bmpOriginal.getHeight();
int 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;
}
/**
* Updates the saturation of the input bitmap.
*
* @param src input bitmap.
* @param saturation the new saturation value.
* @return bitmap with updated saturation.
*/
static Bitmap saturatedBitmap(Bitmap src, float saturation) {
if (saturation < 0.0) {
return src;
}
int w = src.getWidth();
int h = src.getHeight();
Bitmap bitmapResult = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
Canvas canvasResult = new Canvas(bitmapResult);
Paint paint = new Paint();
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.setSaturation(saturation);
ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrix);
paint.setColorFilter(filter);
canvasResult.drawBitmap(src, 0, 0, paint);
return bitmapResult;
}
/**
* Adjusts the brightness and contrast in the input bitmap.
*
* @param bitmap input bitmap.
* @param contrast the new contrast value.
* @param brightness the new brightness value.
* @return bitmap with contrast and brightness changes.
*/
static Bitmap contrastAndBrightnessController(Bitmap bitmap, float contrast, float brightness) {
ColorMatrix cmatrix = new ColorMatrix(new float[]
{
contrast, 0, 0, 0, brightness,
0, contrast, 0, 0, brightness,
0, 0, contrast, 0, brightness,
0, 0, 0, 1, 0
});
Bitmap ret = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());
Canvas canvas = new Canvas(ret);
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(cmatrix));
canvas.drawBitmap(bitmap, 0, 0, paint);
return ret;
}
private void buildPaintShader(){
if(mConfig.paint == null) {
onDrawPaint = new Paint();
BitmapShader shader = new BitmapShader(mBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
Matrix matrix = new Matrix();
// Refraction effect
matrix.setTranslate(-offsetX - 10, -offsetY - 7);
shader.setLocalMatrix(matrix);
ColorMatrix cMatrix = new ColorMatrix();
// Increase saturation and brightness
cMatrix.set(new float[]{
2.5f, 0, 0, 0, 100,
0, 2.5f, 0, 0, 100,
0, 0, 2.5f, 0, 100,
0, 0, 0, 1, 0});
onDrawPaint.setColorFilter(new ColorMatrixColorFilter(cMatrix));
onDrawPaint.setShader(shader);
onDrawPaint.setStyle(Paint.Style.FILL);
}
else
onDrawPaint = mConfig.paint;
}
@Override
protected void onDraw(Canvas canvas) {
int[] argb = parseRgb(mColor);
Log.d("hyh", "ColorMatrixFragment: onStopTrackingTouch: argb="+ Arrays.toString(argb));
// 根据SeekBar定义RGBA的矩阵, 通过修改矩阵第五列颜色的偏移量改变图片的颜色
mColorMatrixArray[4] = argb[0];
mColorMatrixArray[9] = argb[1];
mColorMatrixArray[14] = argb[2];
Log.d("hyh", "ColorMatrixView: onDraw: mColorMatrixArray="+Arrays.toString(mColorMatrixArray));
// 4.使用ColorMatrix创建一个ColorMatrixColorFilter对象, 作为画笔的滤镜, 设置Paint的颜色
mPaint.setColorFilter(new ColorMatrixColorFilter(mColorMatrixArray));
// 5.通过指定了RGBA矩阵的Paint把原图画到空白图片上
canvas.drawBitmap(mBitmap ,mMatrix ,mPaint);
}
/**
* 传入改变亮度前的bitmap，返回改变亮度后的bitmap
* @author leibing
* @createTime 2016/12/30
* @lastModify 2016/12/30
* @param srcBitmap
* @return
*/
@SuppressWarnings("deprecation")
public Drawable changeBrightnessBitmap(Bitmap srcBitmap){
Bitmap bmp = Bitmap.createBitmap(srcBitmap.getWidth(), srcBitmap.getHeight(),
Config.ARGB_8888);
int brightness = 60 - 127;
ColorMatrix cMatrix = new ColorMatrix();
// 改变亮度
cMatrix.set(new float[] { 1, 0, 0, 0, brightness, 0, 1,
0, 0, brightness,
0, 0, 1, 0, brightness, 0, 0, 0, 1, 0 });
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(cMatrix));
Canvas canvas = new Canvas(bmp);
// 在Canvas上绘制一个Bitmap
canvas.drawBitmap(srcBitmap, 0, 0, paint);
return new BitmapDrawable(bmp);
}
private void animateFilterTo(float[] targetFilter) {
float[] oldFilter = mCurrentFilter == null ? new ColorMatrix().getArray() : mCurrentFilter;
mCurrentFilter = Arrays.copyOf(oldFilter, oldFilter.length);
if (mFilterAnimator != null) {
mFilterAnimator.cancel();
}
mFilterAnimator = ValueAnimator.ofObject(new FloatArrayEvaluator(mCurrentFilter),
oldFilter, targetFilter);
mFilterAnimator.setDuration(COLOR_CHANGE_DURATION);
mFilterAnimator.addUpdateListener(new AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
mPaint.setColorFilter(new ColorMatrixColorFilter(mCurrentFilter));
invalidate();
}
});
mFilterAnimator.start();
}
public SimulationPageAnim(int w, int h, View view, OnPageChangeListener listener) {
super(w, h, view, listener);
mPath0 = new Path();
mPath1 = new Path();
mMaxLength = (float) Math.hypot(mScreenWidth, mScreenHeight);
mPaint = new Paint();
mPaint.setStyle(Paint.Style.FILL);
createDrawable();
ColorMatrix cm = new ColorMatrix();//设置颜色数组
float array[] = { 1, 0, 0, 0, 0,
0, 1, 0, 0, 0,
0, 0,1, 0, 0,
0, 0, 0, 1, 0 };
cm.set(array);
mColorMatrixFilter = new ColorMatrixColorFilter(cm);
mMatrix = new Matrix();
mTouchX = 0.01f; // 不让x,y为0,否则在点计算时会有问题
mTouchY = 0.01f;
}
public PageWidget(Context context, String bookId,
List<BookToc.mixToc.Chapters> chaptersList,
OnReadStateChangeListener listener) {
super(context, bookId, chaptersList, listener);
mPath0 = new Path();
mPath1 = new Path();
mMaxLength = (float) Math.hypot(mScreenWidth, mScreenHeight);
mPaint = new Paint();
mPaint.setStyle(Paint.Style.FILL);
createDrawable();
ColorMatrix cm = new ColorMatrix();//设置颜色数组
float array[] = {0.55f, 0, 0, 0, 80.0f, 0, 0.55f, 0, 0, 80.0f, 0, 0, 0.55f, 0, 80.0f, 0, 0, 0, 0.2f, 0};
cm.set(array);
mColorMatrixFilter = new ColorMatrixColorFilter(cm);
mMatrix = new Matrix();
mTouch.x = 0.01f; // 不让x,y为0,否则在点计算时会有问题
mTouch.y = 0.01f;
}
/**
* 色相处理
*
* @param bitmap 原图
* @param hueValue 新的色相值
* @return 改变了色相值之后的图片
*/
public static Bitmap hue(Bitmap bitmap, int hueValue) {
// 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
ColorMatrix hueColorMatrix = new ColorMatrix();
// 控制让红色区在色轮上旋转的角度
hueColorMatrix.setRotate(0, newHueValue);
// 控制让绿红色区在色轮上旋转的角度
hueColorMatrix.setRotate(1, newHueValue);
// 控制让蓝色区在色轮上旋转的角度
hueColorMatrix.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(hueColorMatrix));
// 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;
}
/**
* 饱和度处理
*
* @param bitmap 原图
* @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(Bitmap bitmap, int saturationValue) {
// 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(), 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;
}
/**
* 亮度处理
*
* @param bitmap 原图
* @param lumValue 新的亮度值
* @return 改变了亮度值之后的图片
*/
public static Bitmap lum(Bitmap bitmap, int lumValue) {
// 计算出符合要求的亮度值
float newlumValue = lumValue * 1.0F / 127;
// 创建一个颜色矩阵
ColorMatrix lumColorMatrix = new ColorMatrix();
// 设置亮度值
lumColorMatrix.setScale(newlumValue, newlumValue, newlumValue, 1);
// 创建一个画笔并设置其颜色过滤器
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(lumColorMatrix));
// 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;
}
/**
* 色相处理
*
* @param bitmap 原图
* @param hueValue 新的色相值
* @return 改变了色相值之后的图片
*/
public static Bitmap hue(Bitmap bitmap, int hueValue) {
// 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
ColorMatrix hueColorMatrix = new ColorMatrix();
// 控制让红色区在色轮上旋转的角度
hueColorMatrix.setRotate(0, newHueValue);
// 控制让绿红色区在色轮上旋转的角度
hueColorMatrix.setRotate(1, newHueValue);
// 控制让蓝色区在色轮上旋转的角度
hueColorMatrix.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(hueColorMatrix));
// 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;
}
@Override
public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
Bitmap source = resource.get();
int width = source.getWidth();
int height = source.getHeight();
Bitmap.Config config =
source.getConfig() != null ? source.getConfig() : Bitmap.Config.ARGB_8888;
Bitmap bitmap = mBitmapPool.get(width, height, config);
if (bitmap == null) {
bitmap = Bitmap.createBitmap(width, height, config);
}
Canvas canvas = new Canvas(bitmap);
ColorMatrix saturation = new ColorMatrix();
saturation.setSaturation(0f);
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(saturation));
canvas.drawBitmap(source, 0, 0, paint);
return BitmapResource.obtain(bitmap, mBitmapPool);
}
/**
* 变化Item的灰度值
* @param child 需要设置灰度值的Item
* @param frame 位置信息
*/
private void greyItem(View child, Rect frame) {
float value = computeGreyScale(frame.left - mOffsetAll);
ColorMatrix cm = new ColorMatrix(new float[]{
value, 0, 0, 0, 120*(1-value),
0, value, 0, 0, 120*(1-value),
0, 0, value, 0, 120*(1-value),
0, 0, 0, 1, 250*(1-value),
});
// cm.setSaturation(0.9f);
// Create a paint object with color matrix
Paint greyPaint = new Paint();
greyPaint.setColorFilter(new ColorMatrixColorFilter(cm));
// Create a hardware layer with the grey paint
child.setLayerType(View.LAYER_TYPE_HARDWARE, greyPaint);
if (value >= 1) {
// Remove the hardware layer
child.setLayerType(View.LAYER_TYPE_NONE, null);
}
}
/**
* 传入改变亮度前的bitmap，返回改变亮度后的bitmap
* @author leibing
* @createTime 2016/12/30
* @lastModify 2016/12/30
* @param srcBitmap
* @return
*/
@SuppressWarnings("deprecation")
public Drawable changeBrightnessBitmap(Bitmap srcBitmap){
Bitmap bmp = Bitmap.createBitmap(srcBitmap.getWidth(), srcBitmap.getHeight(),
Config.ARGB_8888);
int brightness = 60 - 127;
ColorMatrix cMatrix = new ColorMatrix();
// 改变亮度
cMatrix.set(new float[] { 1, 0, 0, 0, brightness, 0, 1,
0, 0, brightness,
0, 0, 1, 0, brightness, 0, 0, 0, 1, 0 });
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(cMatrix));
Canvas canvas = new Canvas(bmp);
// 在Canvas上绘制一个Bitmap
canvas.drawBitmap(srcBitmap, 0, 0, paint);
return new BitmapDrawable(bmp);
}