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 // Definitions internal to Minikin 17 18 #include "MinikinInternal.h" 19 20 #include <log/log.h> 21 22 #include "FeatureFlags.h" 23 #include "minikin/MinikinPaint.h" 24 25 namespace minikin { 26 isBMPVariationSelector(uint32_t codePoint)27inline static bool isBMPVariationSelector(uint32_t codePoint) { 28 return VS1 <= codePoint && codePoint <= VS16; 29 } 30 isVariationSelectorSupplement(uint32_t codePoint)31inline static bool isVariationSelectorSupplement(uint32_t codePoint) { 32 return VS17 <= codePoint && codePoint <= VS256; 33 } 34 getVsIndex(uint32_t codePoint)35uint16_t getVsIndex(uint32_t codePoint) { 36 if (isBMPVariationSelector(codePoint)) { 37 return codePoint - VS1; 38 } else if (isVariationSelectorSupplement(codePoint)) { 39 return codePoint - VS17 + 16; 40 } else { 41 return INVALID_VS_INDEX; 42 } 43 } 44 isVariationSelector(uint32_t codePoint)45bool isVariationSelector(uint32_t codePoint) { 46 return isBMPVariationSelector(codePoint) || isVariationSelectorSupplement(codePoint); 47 } 48 49 } // namespace minikin 50