DrawFilter.java revision 54b6cfa9a9e5b861a9930af873580d6dc20f773c 
1/*
2 * Copyright (C) 2008 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 android.graphics;
18
19/**
20 * A DrawFilter subclass can be installed in a Canvas. When it is present, it
21 * can modify the paint that is used to draw (temporarily). With this, a filter
22 * can disable/enable antialiasing, or change the color for everything this is
23 * drawn.
24 */
25public class DrawFilter {
26
27    // this is set by subclasses, but don't make it public
28    /* package */ int mNativeInt;    // pointer to native object
29
30    protected void finalize() throws Throwable {
31        nativeDestructor(mNativeInt);
32    }
33
34    private static native void nativeDestructor(int nativeDrawFilter);
35}
36
37