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.BasicStroke;
23 import java.awt.Stroke;
24 
25 /**
26  * Delegate implementing the native methods of android.graphics.DashPathEffect
27  *
28  * Through the layoutlib_create tool, the original native methods of DashPathEffect have been
29  * replaced by calls to methods of the same name in this delegate class.
30  *
31  * This class behaves like the original native implementation, but in Java, keeping previously
32  * native data into its own objects and mapping them to int that are sent back and forth between
33  * it and the original DashPathEffect class.
34  *
35  * Because this extends {@link PathEffect_Delegate}, there's no need to use a
36  * {@link DelegateManager}, as all the PathEffect classes will be added to the manager owned by
37  * {@link PathEffect_Delegate}.
38  *
39  * @see PathEffect_Delegate
40  *
41  */
42 public final class DashPathEffect_Delegate extends PathEffect_Delegate {
43 
44     // ---- delegate data ----
45 
46     private final float[] mIntervals;
47     private final float mPhase;
48 
49     // ---- Public Helper methods ----
50 
51     @Override
getStroke(Paint_Delegate paint)52     public Stroke getStroke(Paint_Delegate paint) {
53         return new BasicStroke(
54                 paint.getStrokeWidth(),
55                 paint.getJavaCap(),
56                 paint.getJavaJoin(),
57                 paint.getJavaStrokeMiter(),
58                 mIntervals,
59                 mPhase);
60     }
61 
62     @Override
isSupported()63     public boolean isSupported() {
64         return true;
65     }
66 
67     @Override
getSupportMessage()68     public String getSupportMessage() {
69         // no message since isSupported returns true;
70         return null;
71     }
72 
73     // ---- native methods ----
74 
75     @LayoutlibDelegate
nativeCreate(float intervals[], float phase)76     /*package*/ static long nativeCreate(float intervals[], float phase) {
77         DashPathEffect_Delegate newDelegate = new DashPathEffect_Delegate(intervals, phase);
78         return sManager.addNewDelegate(newDelegate);
79     }
80 
81     // ---- Private delegate/helper methods ----
82 
DashPathEffect_Delegate(float intervals[], float phase)83     private DashPathEffect_Delegate(float intervals[], float phase) {
84         mIntervals = new float[intervals.length];
85         System.arraycopy(intervals, 0, mIntervals, 0, intervals.length);
86         mPhase = phase;
87     }
88 }
89 
90