ImageFilterVignette.java revision 4b1e6fbdf437b7a25fb3eb18a2ed43c9ab4eccc8 
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
17package com.android.gallery3d.filtershow.filters;
18
19import com.android.gallery3d.R;
20
21import android.graphics.Bitmap;
22import com.android.gallery3d.app.Log;
23
24public class ImageFilterVignette extends SimpleImageFilter {
25
26    private static final String LOGTAG = "ImageFilterVignette";
27
28    public ImageFilterVignette() {
29        mName = "Vignette";
30    }
31
32    public FilterRepresentation getDefaultRepresentation() {
33        FilterBasicRepresentation representation =
34                (FilterBasicRepresentation) super.getDefaultRepresentation();
35        representation.setName("Vignette");
36        representation.setFilterClass(ImageFilterVignette.class);
37        representation.setPriority(FilterRepresentation.TYPE_VIGNETTE);
38        representation.setTextId(R.string.vignette);
39        representation.setButtonId(R.id.vignetteButton);
40
41        representation.setMinimum(-100);
42        representation.setMaximum(100);
43        representation.setDefaultValue(0);
44
45        return representation;
46    }
47
48    native protected void nativeApplyFilter(Bitmap bitmap, int w, int h, float strength);
49
50    @Override
51    public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) {
52        if (getParameters() == null) {
53            return bitmap;
54        }
55        int w = bitmap.getWidth();
56        int h = bitmap.getHeight();
57        float value = getParameters().getValue() / 100.0f;
58        nativeApplyFilter(bitmap, w, h, value);
59
60        return bitmap;
61    }
62}
63