1 /*
2  * Copyright (C) 2016 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.annotation;
18 
19 import java.lang.annotation.Documented;
20 import java.lang.annotation.Retention;
21 import java.lang.annotation.Target;
22 
23 import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
24 import static java.lang.annotation.ElementType.FIELD;
25 import static java.lang.annotation.ElementType.LOCAL_VARIABLE;
26 import static java.lang.annotation.ElementType.METHOD;
27 import static java.lang.annotation.ElementType.PARAMETER;
28 import static java.lang.annotation.RetentionPolicy.SOURCE;
29 
30 /**
31  * Denotes that a numeric parameter, field or method return value is expected
32  * to represent a dimension.
33  *
34  * {@hide}
35  */
36 @Documented
37 @Retention(SOURCE)
38 @Target({METHOD,PARAMETER,FIELD,LOCAL_VARIABLE,ANNOTATION_TYPE})
39 public @interface Dimension {
40     @Unit
unit()41     int unit() default PX;
42 
43     int DP = 0;
44     int PX = 1;
45     int SP = 2;
46 
47     @IntDef({PX, DP, SP})
48     @Retention(SOURCE)
49     @interface Unit {}
50 }
51