1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.gallery3d.filtershow.filters; 18 19 import com.android.gallery3d.R; 20 import com.android.gallery3d.filtershow.editors.BasicEditor; 21 22 import android.graphics.Bitmap; 23 24 public class ImageFilterHue extends SimpleImageFilter { 25 private static final String SERIALIZATION_NAME = "HUE"; 26 private ColorSpaceMatrix cmatrix = null; 27 28 public ImageFilterHue() { 29 mName = "Hue"; 30 cmatrix = new ColorSpaceMatrix(); 31 } 32 33 public FilterRepresentation getDefaultRepresentation() { 34 FilterBasicRepresentation representation = 35 (FilterBasicRepresentation) super.getDefaultRepresentation(); 36 representation.setName("Hue"); 37 representation.setSerializationName(SERIALIZATION_NAME); 38 representation.setFilterClass(ImageFilterHue.class); 39 representation.setMinimum(-180); 40 representation.setMaximum(180); 41 representation.setTextId(R.string.hue); 42 representation.setEditorId(BasicEditor.ID); 43 representation.setSupportsPartialRendering(true); 44 return representation; 45 } 46 47 native protected void nativeApplyFilter(Bitmap bitmap, int w, int h, float []matrix); 48 49 @Override 50 public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { 51 if (getParameters() == null) { 52 return bitmap; 53 } 54 int w = bitmap.getWidth(); 55 int h = bitmap.getHeight(); 56 float value = getParameters().getValue(); 57 cmatrix.identity(); 58 cmatrix.setHue(value); 59 60 nativeApplyFilter(bitmap, w, h, cmatrix.getMatrix()); 61 62 return bitmap; 63 } 64 } 65
