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.BasicStroke;
23import 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 */
42public 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
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
63    public boolean isSupported() {
64        return true;
65    }
66
67    @Override
68    public String getSupportMessage() {
69        // no message since isSupported returns true;
70        return null;
71    }
72
73    // ---- native methods ----
74
75    @LayoutlibDelegate
76    /*package*/ static int 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
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