/**
* 图像调整
*
* @param bm 默认不可修改
* @param hue 色相
* @param saturation 饱和度
* @param lum 亮度
* @return
*/
public static Bitmap handleImageEffect(Bitmap bm, float hue, float saturation, float lum) {
Bitmap bmp = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bmp);
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 bmp;
}
private int rotateColor(int color, float rad) {
float deg = rad * 180 / 3.1415927f;
int r = Color.red(color);
int g = Color.green(color);
int b = Color.blue(color);
ColorMatrix cm = new ColorMatrix();
ColorMatrix tmp = new ColorMatrix();
cm.setRGB2YUV();
tmp.setRotate(0, deg);
cm.postConcat(tmp);
tmp.setYUV2RGB();
cm.postConcat(tmp);
final float[] a = cm.getArray();
int ir = floatToByte(a[0] * r + a[1] * g + a[2] * b);
int ig = floatToByte(a[5] * r + a[6] * g + a[7] * b);
int ib = floatToByte(a[10] * r + a[11] * g + a[12] * b);
return Color.argb(
Color.alpha(color), pinToByte(ir),
pinToByte(ig), pinToByte(ib));
}
static void setBackground(View v, Bitmap bm) {
if (bm == null) {
v.setBackgroundResource(0);
return;
}
int vwidth = v.getWidth();
int vheight = v.getHeight();
int bwidth = bm.getWidth();
int bheight = bm.getHeight();
float scalex = (float) vwidth / bwidth;
float scaley = (float) vheight / bheight;
float scale = Math.max(scalex, scaley) * 1.3f;
Bitmap.Config config = Bitmap.Config.ARGB_8888;
Bitmap bg = Bitmap.createBitmap(vwidth, vheight, config);
Canvas c = new Canvas(bg);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
ColorMatrix greymatrix = new ColorMatrix();
greymatrix.setSaturation(0);
ColorMatrix darkmatrix = new ColorMatrix();
darkmatrix.setScale(.3f, .3f, .3f, 1.0f);
greymatrix.postConcat(darkmatrix);
ColorFilter filter = new ColorMatrixColorFilter(greymatrix);
paint.setColorFilter(filter);
Matrix matrix = new Matrix();
matrix.setTranslate(-bwidth / 2, -bheight / 2); // move bitmap center to origin
matrix.postRotate(10);
matrix.postScale(scale, scale);
matrix.postTranslate(vwidth / 2, vheight / 2); // Move bitmap center to view center
c.drawBitmap(bm, matrix, paint);
v.setBackgroundDrawable(new BitmapDrawable(bg));
}