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 
17 package android.graphics;
18 
19 import com.android.layoutlib.bridge.impl.DelegateManager;
20 import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
21 
22 import 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  */
40 public class ComposeShader_Delegate extends Shader_Delegate {
41 
42     // ---- delegate data ----
43 
44     // ---- Public Helper methods ----
45 
46     @Override
getJavaPaint()47     public Paint getJavaPaint() {
48         // FIXME
49         return null;
50     }
51 
52     @Override
isSupported()53     public boolean isSupported() {
54         return false;
55     }
56 
57     @Override
getSupportMessage()58     public String getSupportMessage() {
59         return "Compose Shaders are not supported in Layout Preview mode.";
60     }
61 
62 
63     // ---- native methods ----
64 
65     @LayoutlibDelegate
nativeCreate(long nativeMatrix, long native_shaderA, long native_shaderB, int native_mode)66     /*package*/ static long nativeCreate(long nativeMatrix, long native_shaderA,
67             long native_shaderB, int native_mode) {
68         // FIXME not supported yet.
69         ComposeShader_Delegate newDelegate = new ComposeShader_Delegate(nativeMatrix);
70         return sManager.addNewDelegate(newDelegate);
71     }
72 
73 
74     // ---- Private delegate/helper methods ----
75 
ComposeShader_Delegate(long nativeMatrix)76     private ComposeShader_Delegate(long nativeMatrix) {
77         super(nativeMatrix);
78     }
79 }
80