1 /*
2  * Copyright (C) 2007 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.drawable.shapes;
18 
19 import android.graphics.Canvas;
20 import android.graphics.Outline;
21 import android.graphics.Paint;
22 
23 /**
24  * Creates an arc shape. The arc shape starts at a specified
25  * angle and sweeps clockwise, drawing slices of pie.
26  * The arc can be drawn to a Canvas with its own draw() method,
27  * but more graphical control is available if you instead pass
28  * the ArcShape to a {@link android.graphics.drawable.ShapeDrawable}.
29  */
30 public class ArcShape extends RectShape {
31     private float mStart;
32     private float mSweep;
33 
34     /**
35      * ArcShape constructor.
36      *
37      * @param startAngle the angle (in degrees) where the arc begins
38      * @param sweepAngle the sweep angle (in degrees). Anything equal to or
39      *                   greater than 360 results in a complete circle/oval.
40      */
ArcShape(float startAngle, float sweepAngle)41     public ArcShape(float startAngle, float sweepAngle) {
42         mStart = startAngle;
43         mSweep = sweepAngle;
44     }
45 
46     @Override
draw(Canvas canvas, Paint paint)47     public void draw(Canvas canvas, Paint paint) {
48         canvas.drawArc(rect(), mStart, mSweep, true, paint);
49     }
50 
51     @Override
getOutline(Outline outline)52     public void getOutline(Outline outline) {
53         // Since we don't support concave outlines, arc shape does not attempt
54         // to provide an outline.
55     }
56 }
57 
58