Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 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 OUTLINE_H |
| 17 | #define OUTLINE_H |
| 18 | |
| 19 | #include <SkPath.h> |
| 20 | |
| 21 | #include "Rect.h" |
Chris Craik | b60d3e7 | 2015-06-25 17:15:16 -0700 | [diff] [blame] | 22 | #include "utils/MathUtils.h" |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 23 | |
| 24 | namespace android { |
| 25 | namespace uirenderer { |
| 26 | |
| 27 | class Outline { |
| 28 | public: |
| 29 | Outline() |
| 30 | : mShouldClip(false) |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 31 | , mType(Type::None) |
Chris Craik | 77b5cad | 2014-07-30 18:23:07 -0700 | [diff] [blame] | 32 | , mRadius(0) |
| 33 | , mAlpha(0.0f) {} |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 34 | |
Chris Craik | 77b5cad | 2014-07-30 18:23:07 -0700 | [diff] [blame] | 35 | void setRoundRect(int left, int top, int right, int bottom, float radius, float alpha) { |
Chris Craik | 40de9f2 | 2015-07-29 12:51:41 -0700 | [diff] [blame] | 36 | mAlpha = alpha; |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 37 | if (mType == Type::RoundRect |
Chris Craik | 40de9f2 | 2015-07-29 12:51:41 -0700 | [diff] [blame] | 38 | && left == mBounds.left |
| 39 | && right == mBounds.right |
| 40 | && top == mBounds.top |
| 41 | && bottom == mBounds.bottom |
| 42 | && radius == mRadius) { |
| 43 | // nothing to change, don't do any work |
| 44 | return; |
| 45 | } |
| 46 | |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 47 | mType = Type::RoundRect; |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 48 | mBounds.set(left, top, right, bottom); |
| 49 | mRadius = radius; |
Chris Craik | 40de9f2 | 2015-07-29 12:51:41 -0700 | [diff] [blame] | 50 | |
| 51 | // update mPath to reflect new outline |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 52 | mPath.reset(); |
Chris Craik | 40de9f2 | 2015-07-29 12:51:41 -0700 | [diff] [blame] | 53 | if (MathUtils::isPositive(radius)) { |
| 54 | mPath.addRoundRect(SkRect::MakeLTRB(left, top, right, bottom), |
| 55 | radius, radius); |
| 56 | } else { |
| 57 | mPath.addRect(left, top, right, bottom); |
| 58 | } |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 59 | } |
| 60 | |
Chris Craik | 77b5cad | 2014-07-30 18:23:07 -0700 | [diff] [blame] | 61 | void setConvexPath(const SkPath* outline, float alpha) { |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 62 | if (!outline) { |
| 63 | setEmpty(); |
| 64 | return; |
| 65 | } |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 66 | mType = Type::ConvexPath; |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 67 | mPath = *outline; |
| 68 | mBounds.set(outline->getBounds()); |
Chris Craik | 77b5cad | 2014-07-30 18:23:07 -0700 | [diff] [blame] | 69 | mAlpha = alpha; |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 70 | } |
| 71 | |
Chris Craik | 0645128 | 2014-07-21 10:25:54 -0700 | [diff] [blame] | 72 | void setEmpty() { |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 73 | mType = Type::Empty; |
Chris Craik | 0645128 | 2014-07-21 10:25:54 -0700 | [diff] [blame] | 74 | mPath.reset(); |
Chris Craik | 77b5cad | 2014-07-30 18:23:07 -0700 | [diff] [blame] | 75 | mAlpha = 0.0f; |
Chris Craik | 6131732 | 2014-05-21 13:03:52 -0700 | [diff] [blame] | 76 | } |
| 77 | |
Chris Craik | 0645128 | 2014-07-21 10:25:54 -0700 | [diff] [blame] | 78 | void setNone() { |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 79 | mType = Type::None; |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 80 | mPath.reset(); |
Chris Craik | 77b5cad | 2014-07-30 18:23:07 -0700 | [diff] [blame] | 81 | mAlpha = 0.0f; |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 82 | } |
| 83 | |
Chris Craik | 0645128 | 2014-07-21 10:25:54 -0700 | [diff] [blame] | 84 | bool isEmpty() const { |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 85 | return mType == Type::Empty; |
Chris Craik | 0645128 | 2014-07-21 10:25:54 -0700 | [diff] [blame] | 86 | } |
| 87 | |
Chris Craik | 77b5cad | 2014-07-30 18:23:07 -0700 | [diff] [blame] | 88 | float getAlpha() const { |
| 89 | return mAlpha; |
| 90 | } |
| 91 | |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 92 | void setShouldClip(bool clip) { |
| 93 | mShouldClip = clip; |
| 94 | } |
| 95 | |
Chris Craik | deeda3d | 2014-05-05 19:09:33 -0700 | [diff] [blame] | 96 | bool getShouldClip() const { |
| 97 | return mShouldClip; |
| 98 | } |
| 99 | |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 100 | bool willClip() const { |
| 101 | // only round rect outlines can be used for clipping |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 102 | return mShouldClip && (mType == Type::RoundRect); |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 103 | } |
| 104 | |
Chris Craik | b60d3e7 | 2015-06-25 17:15:16 -0700 | [diff] [blame] | 105 | bool willRoundRectClip() const { |
| 106 | // only round rect outlines can be used for clipping |
| 107 | return willClip() && MathUtils::isPositive(mRadius); |
| 108 | } |
| 109 | |
Chris Craik | deeda3d | 2014-05-05 19:09:33 -0700 | [diff] [blame] | 110 | bool getAsRoundRect(Rect* outRect, float* outRadius) const { |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 111 | if (mType == Type::RoundRect) { |
Chris Craik | deeda3d | 2014-05-05 19:09:33 -0700 | [diff] [blame] | 112 | outRect->set(mBounds); |
| 113 | *outRadius = mRadius; |
| 114 | return true; |
| 115 | } |
| 116 | return false; |
| 117 | } |
| 118 | |
John Reck | d0a0b2a | 2014-03-20 16:28:56 -0700 | [diff] [blame] | 119 | const SkPath* getPath() const { |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 120 | if (mType == Type::None || mType == Type::Empty) return nullptr; |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 121 | |
| 122 | return &mPath; |
| 123 | } |
| 124 | |
| 125 | private: |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 126 | enum class Type { |
| 127 | None = 0, |
| 128 | Empty = 1, |
| 129 | ConvexPath = 2, |
| 130 | RoundRect = 3 |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 131 | }; |
| 132 | |
| 133 | bool mShouldClip; |
Chris Craik | b9ce116d | 2015-08-20 15:14:06 -0700 | [diff] [blame^] | 134 | Type mType; |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 135 | Rect mBounds; |
| 136 | float mRadius; |
Chris Craik | 77b5cad | 2014-07-30 18:23:07 -0700 | [diff] [blame] | 137 | float mAlpha; |
Chris Craik | b49f446 | 2014-03-20 12:44:20 -0700 | [diff] [blame] | 138 | SkPath mPath; |
| 139 | }; |
| 140 | |
| 141 | } /* namespace uirenderer */ |
| 142 | } /* namespace android */ |
| 143 | |
| 144 | #endif /* OUTLINE_H */ |