Outline.h revision 40de9f28f48f80674ae64b7f165b56281e8b9038
1b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik/* 2b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * Copyright (C) 2014 The Android Open Source Project 3b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * 4b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * Licensed under the Apache License, Version 2.0 (the "License"); 5b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * you may not use this file except in compliance with the License. 6b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * You may obtain a copy of the License at 7b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * 8b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * http://www.apache.org/licenses/LICENSE-2.0 9b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * 10b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * Unless required by applicable law or agreed to in writing, software 11b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * distributed under the License is distributed on an "AS IS" BASIS, 12b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * See the License for the specific language governing permissions and 14b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik * limitations under the License. 15b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik */ 16b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik#ifndef OUTLINE_H 17b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik#define OUTLINE_H 18b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 19b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik#include <SkPath.h> 20b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 21b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik#include "Rect.h" 22b60d3e7856f74c72898b2cba553db0d2e2d1365dChris Craik#include "utils/MathUtils.h" 23b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 24b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craiknamespace android { 25b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craiknamespace uirenderer { 26b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 27b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craikclass Outline { 28b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craikpublic: 29b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik Outline() 30b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik : mShouldClip(false) 31b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik , mType(kOutlineType_None) 3277b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik , mRadius(0) 3377b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik , mAlpha(0.0f) {} 34b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 3577b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik void setRoundRect(int left, int top, int right, int bottom, float radius, float alpha) { 3640de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik mAlpha = alpha; 3740de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik if (mType == kOutlineType_RoundRect 3840de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik && left == mBounds.left 3940de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik && right == mBounds.right 4040de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik && top == mBounds.top 4140de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik && bottom == mBounds.bottom 4240de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik && radius == mRadius) { 4340de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik // nothing to change, don't do any work 4440de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik return; 4540de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik } 4640de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik 47b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mType = kOutlineType_RoundRect; 48b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mBounds.set(left, top, right, bottom); 49b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mRadius = radius; 5040de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik 5140de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik // update mPath to reflect new outline 52b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mPath.reset(); 5340de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik if (MathUtils::isPositive(radius)) { 5440de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik mPath.addRoundRect(SkRect::MakeLTRB(left, top, right, bottom), 5540de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik radius, radius); 5640de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik } else { 5740de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik mPath.addRect(left, top, right, bottom); 5840de9f28f48f80674ae64b7f165b56281e8b9038Chris Craik } 59b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik } 60b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 6177b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik void setConvexPath(const SkPath* outline, float alpha) { 62b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik if (!outline) { 63b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik setEmpty(); 64b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik return; 65b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik } 66b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mType = kOutlineType_ConvexPath; 67b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mPath = *outline; 68b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mBounds.set(outline->getBounds()); 6977b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik mAlpha = alpha; 70b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik } 71b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 720645128b80621edee70f8cab4afb208fe0c26becChris Craik void setEmpty() { 730645128b80621edee70f8cab4afb208fe0c26becChris Craik mType = kOutlineType_Empty; 740645128b80621edee70f8cab4afb208fe0c26becChris Craik mPath.reset(); 7577b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik mAlpha = 0.0f; 7661317325b7b4b4ffafd9400ab5966e8d7c67df2eChris Craik } 7761317325b7b4b4ffafd9400ab5966e8d7c67df2eChris Craik 780645128b80621edee70f8cab4afb208fe0c26becChris Craik void setNone() { 79b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mType = kOutlineType_None; 80b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mPath.reset(); 8177b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik mAlpha = 0.0f; 82b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik } 83b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 840645128b80621edee70f8cab4afb208fe0c26becChris Craik bool isEmpty() const { 850645128b80621edee70f8cab4afb208fe0c26becChris Craik return mType == kOutlineType_Empty; 860645128b80621edee70f8cab4afb208fe0c26becChris Craik } 870645128b80621edee70f8cab4afb208fe0c26becChris Craik 8877b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik float getAlpha() const { 8977b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik return mAlpha; 9077b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik } 9177b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik 92b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik void setShouldClip(bool clip) { 93b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik mShouldClip = clip; 94b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik } 95b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 96deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik bool getShouldClip() const { 97deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik return mShouldClip; 98deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik } 99deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik 100b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik bool willClip() const { 101b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik // only round rect outlines can be used for clipping 102b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik return mShouldClip && (mType == kOutlineType_RoundRect); 103b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik } 104b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 105b60d3e7856f74c72898b2cba553db0d2e2d1365dChris Craik bool willRoundRectClip() const { 106b60d3e7856f74c72898b2cba553db0d2e2d1365dChris Craik // only round rect outlines can be used for clipping 107b60d3e7856f74c72898b2cba553db0d2e2d1365dChris Craik return willClip() && MathUtils::isPositive(mRadius); 108b60d3e7856f74c72898b2cba553db0d2e2d1365dChris Craik } 109b60d3e7856f74c72898b2cba553db0d2e2d1365dChris Craik 110deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik bool getAsRoundRect(Rect* outRect, float* outRadius) const { 111deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik if (mType == kOutlineType_RoundRect) { 112deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik outRect->set(mBounds); 113deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik *outRadius = mRadius; 114deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik return true; 115deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik } 116deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik return false; 117deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik } 118deeda3d337aed1eee218b89a7aba5992ced371f0Chris Craik 119d0a0b2a3140bfb1819a116413ce9d81886697a07John Reck const SkPath* getPath() const { 120e84a208317e0ed388fcdad1e6743c7849acb51b0Chris Craik if (mType == kOutlineType_None || mType == kOutlineType_Empty) return nullptr; 121b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 122b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik return &mPath; 123b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik } 124b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 125b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craikprivate: 126b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik enum OutlineType { 127b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik kOutlineType_None = 0, 1280645128b80621edee70f8cab4afb208fe0c26becChris Craik kOutlineType_Empty = 1, 1290645128b80621edee70f8cab4afb208fe0c26becChris Craik kOutlineType_ConvexPath = 2, 1300645128b80621edee70f8cab4afb208fe0c26becChris Craik kOutlineType_RoundRect = 3 131b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik }; 132b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 133b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik bool mShouldClip; 134b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik OutlineType mType; 135b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik Rect mBounds; 136b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik float mRadius; 13777b5cad3efedd20f2b7cc14d87ccce1b0261960aChris Craik float mAlpha; 138b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik SkPath mPath; 139b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik}; 140b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 141b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik} /* namespace uirenderer */ 142b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik} /* namespace android */ 143b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik 144b49f446c98096c4790a11d9b5bc83a4e585278c9Chris Craik#endif /* OUTLINE_H */ 145