1/*
2 * Copyright (C) 2010 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
19import com.android.layoutlib.bridge.impl.DelegateManager;
20import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
21
22import java.awt.Composite;
23
24/**
25 * Delegate implementing the native methods of android.graphics.PixelXorXfermode
26 *
27 * Through the layoutlib_create tool, the original native methods of PixelXorXfermode have been
28 * replaced by calls to methods of the same name in this delegate class.
29 *
30 * This class behaves like the original native implementation, but in Java, keeping previously
31 * native data into its own objects and mapping them to int that are sent back and forth between
32 * it and the original PixelXorXfermode class.
33 *
34 * Because this extends {@link Xfermode_Delegate}, there's no need to use a
35 * {@link DelegateManager}, as all the PathEffect classes will be added to the manager owned by
36 * {@link Xfermode_Delegate}.
37 *
38 * @see Xfermode_Delegate
39 */
40public class PixelXorXfermode_Delegate extends Xfermode_Delegate {
41    // ---- delegate data ----
42
43    // ---- Public Helper methods ----
44
45    @Override
46    public Composite getComposite(int alpha) {
47        // FIXME
48        return null;
49    }
50
51    @Override
52    public boolean isSupported() {
53        return false;
54    }
55
56    @Override
57    public String getSupportMessage() {
58        return "Pixel XOR Xfermodes are not supported in Layout Preview mode.";
59    }
60
61    // ---- native methods ----
62
63    @LayoutlibDelegate
64    /*package*/ static long nativeCreate(int opColor) {
65        PixelXorXfermode_Delegate newDelegate = new PixelXorXfermode_Delegate();
66        return sManager.addNewDelegate(newDelegate);
67    }
68
69    // ---- Private delegate/helper methods ----
70}
71