1 /*
2  * Copyright (C) 2014 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 #ifndef REVEALCLIP_H
17 #define REVEALCLIP_H
18 
19 #include <SkPath.h>
20 
21 #include "Rect.h"
22 
23 namespace android {
24 namespace uirenderer {
25 
26 class RevealClip {
27 public:
RevealClip()28     RevealClip()
29             : mShouldClip(false)
30             , mX(0)
31             , mY(0)
32             , mRadius(0) {}
33 
set(bool shouldClip,float x,float y,float radius)34     void set(bool shouldClip, float x, float y, float radius) {
35         mShouldClip = shouldClip;
36         mX = x;
37         mY = y;
38         mRadius = radius;
39 
40         mPath.rewind();
41         if (mShouldClip) {
42             mPath.addCircle(x, y, radius);
43         }
44     }
45 
willClip()46     bool willClip() const {
47         return mShouldClip;
48     }
49 
getBounds(Rect * outBounds)50     void getBounds(Rect* outBounds) const {
51         outBounds->set(mX - mRadius, mY - mRadius,
52                 mX + mRadius, mY + mRadius);
53     }
getRadius()54     float getRadius() const { return mRadius; }
55 
getPath()56     const SkPath* getPath() const {
57         if (!mShouldClip) return nullptr;
58 
59         return &mPath;
60     }
61 
62 private:
63     bool mShouldClip;
64     float mX;
65     float mY;
66     float mRadius;
67     SkPath mPath;
68 };
69 
70 } /* namespace uirenderer */
71 } /* namespace android */
72 
73 #endif /* REVEALCLIP_H */
74