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.Paint;
23
24/**
25 * Delegate implementing the native methods of android.graphics.ComposeShader
26 *
27 * Through the layoutlib_create tool, the original native methods of ComposeShader 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 ComposeShader class.
33 *
34 * Because this extends {@link Shader_Delegate}, there's no need to use a {@link DelegateManager},
35 * as all the Shader classes will be added to the manager owned by {@link Shader_Delegate}.
36 *
37 * @see Shader_Delegate
38 *
39 */
40public class ComposeShader_Delegate extends Shader_Delegate {
41
42    // ---- delegate data ----
43
44    // ---- Public Helper methods ----
45
46    @Override
47    public Paint getJavaPaint() {
48        // FIXME
49        return null;
50    }
51
52    @Override
53    public boolean isSupported() {
54        return false;
55    }
56
57    @Override
58    public String getSupportMessage() {
59        return "Compose Shaders are not supported in Layout Preview mode.";
60    }
61
62
63    // ---- native methods ----
64
65    @LayoutlibDelegate
66    /*package*/ static int nativeCreate1(int native_shaderA, int native_shaderB,
67            int native_mode) {
68        // FIXME not supported yet.
69        ComposeShader_Delegate newDelegate = new ComposeShader_Delegate();
70        return sManager.addNewDelegate(newDelegate);
71    }
72
73    @LayoutlibDelegate
74    /*package*/ static int nativeCreate2(int native_shaderA, int native_shaderB,
75            int porterDuffMode) {
76        // FIXME not supported yet.
77        ComposeShader_Delegate newDelegate = new ComposeShader_Delegate();
78        return sManager.addNewDelegate(newDelegate);
79    }
80
81    @LayoutlibDelegate
82    /*package*/ static int nativePostCreate1(int native_shader, int native_skiaShaderA,
83            int native_skiaShaderB, int native_mode) {
84        // pass, not needed.
85        return 0;
86    }
87
88    @LayoutlibDelegate
89    /*package*/ static int nativePostCreate2(int native_shader, int native_skiaShaderA,
90            int native_skiaShaderB, int porterDuffMode) {
91        // pass, not needed.
92        return 0;
93    }
94
95    // ---- Private delegate/helper methods ----
96
97}
98