MinikinUtils.cpp revision 20866c140438a9aca3e1ad09fe646308678e9383
11a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien/* 21a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * Copyright (C) 2014 The Android Open Source Project 31a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * 41a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * Licensed under the Apache License, Version 2.0 (the "License"); 51a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * you may not use this file except in compliance with the License. 61a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * You may obtain a copy of the License at 71a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * 81a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * http://www.apache.org/licenses/LICENSE-2.0 91a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * 101a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * Unless required by applicable law or agreed to in writing, software 111a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * distributed under the License is distributed on an "AS IS" BASIS, 121a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * See the License for the specific language governing permissions and 141a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien * limitations under the License. 151a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien */ 1652eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn 17dccca44ffda4836b56a21da95a046c9708ffd49csergeyv#include "MinikinUtils.h" 181a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien 1952eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <string> 2052eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn 2152eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn#include <log/log.h> 2252eb4e01a49fe2e94555c000de38bbcbbb13401bMark Salyzyn 23afbd0f1fef46ef0ddf633dfde0de724db3da1405Sergei Vasilinetc#include "Paint.h" 24dccca44ffda4836b56a21da95a046c9708ffd49csergeyv#include "SkPathMeasure.h" 25bad99183916ba2bac6659efc8a28273e344ba511sergeyv#include "Typeface.h" 261a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien 271a73f732f91e97c9c66b808c245ddda36a10e987Raph Leviennamespace android { 281a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien 2920866c140438a9aca3e1ad09fe646308678e9383Seigo Nonakaminikin::MinikinPaint MinikinUtils::prepareMinikinPaint(const Paint* paint, 3020866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka const Typeface* typeface) { 31bad99183916ba2bac6659efc8a28273e344ba511sergeyv const Typeface* resolvedFace = Typeface::resolveDefault(typeface); 32ae1aa85d0c7305bb621f1f8003bd674285aa3b63Seigo Nonaka minikin::FontStyle resolved = resolvedFace->fStyle; 335ec789608bda858a0c6d669bb44a35a5a99abcdbBehdad Esfahbod 3420866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka const minikin::FontVariant minikinVariant = 3520866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka (paint->getFontVariant() == minikin::FontVariant::ELEGANT) 3620866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka ? minikin::FontVariant::ELEGANT 3720866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka : minikin::FontVariant::COMPACT; 385ec789608bda858a0c6d669bb44a35a5a99abcdbBehdad Esfahbod 3920866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikin::MinikinPaint minikinPaint; 405ec789608bda858a0c6d669bb44a35a5a99abcdbBehdad Esfahbod /* Prepare minikin Paint */ 4120866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.size = 421bcacfdcab0eaa0cee92bd7f5a1b5e271dd68e52John Reck paint->isLinearText() ? paint->getTextSize() : static_cast<int>(paint->getTextSize()); 4320866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.scaleX = paint->getTextScaleX(); 4420866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.skewX = paint->getTextSkewX(); 4520866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.letterSpacing = paint->getLetterSpacing(); 4620866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.wordSpacing = paint->getWordSpacing(); 4720866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.paintFlags = MinikinFontSkia::packPaintFlags(paint); 4820866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.localeListId = paint->getMinikinLocaleListId(); 4920866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.fontStyle = minikin::FontStyle(minikinVariant, resolved.weight, resolved.slant); 5020866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.fontFeatureSettings = paint->getFontFeatureSettings(); 5120866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikinPaint.hyphenEdit = minikin::HyphenEdit(paint->getHyphenEdit()); 5220866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka return minikinPaint; 53c94f742f7e07a3b86c8f603836c19638472b3e83Raph Levien} 545ec789608bda858a0c6d669bb44a35a5a99abcdbBehdad Esfahbod 557c93e868825225a270c993ac058687adde682626Seigo Nonakaminikin::Layout MinikinUtils::doLayout(const Paint* paint, minikin::Bidi bidiFlags, 561bcacfdcab0eaa0cee92bd7f5a1b5e271dd68e52John Reck const Typeface* typeface, const uint16_t* buf, size_t start, 571bcacfdcab0eaa0cee92bd7f5a1b5e271dd68e52John Reck size_t count, size_t bufSize) { 5820866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikin::MinikinPaint minikinPaint = prepareMinikinPaint(paint, typeface); 5951218e80f70601193e43d90aaf1599a7f6d11062Seigo Nonaka minikin::Layout layout; 6020866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka layout.doLayout(buf, start, count, bufSize, bidiFlags, minikinPaint, 611bcacfdcab0eaa0cee92bd7f5a1b5e271dd68e52John Reck Typeface::resolveDefault(typeface)->fFontCollection); 62c7064146f959caec058980ced144942c8044a169Seigo Nonaka return layout; 631a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien} 641a73f732f91e97c9c66b808c245ddda36a10e987Raph Levien 657c93e868825225a270c993ac058687adde682626Seigo Nonakafloat MinikinUtils::measureText(const Paint* paint, minikin::Bidi bidiFlags, 661bcacfdcab0eaa0cee92bd7f5a1b5e271dd68e52John Reck const Typeface* typeface, const uint16_t* buf, size_t start, 671bcacfdcab0eaa0cee92bd7f5a1b5e271dd68e52John Reck size_t count, size_t bufSize, float* advances) { 6820866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka minikin::MinikinPaint minikinPaint = prepareMinikinPaint(paint, typeface); 69318ca04079bd6242cb6186d9005b9caeee22e845Seigo Nonaka const Typeface* resolvedTypeface = Typeface::resolveDefault(typeface); 7020866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka return minikin::Layout::measureText(buf, start, count, bufSize, bidiFlags, minikinPaint, 7120866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka resolvedTypeface->fFontCollection, advances, 721bcacfdcab0eaa0cee92bd7f5a1b5e271dd68e52John Reck nullptr /* extent */, nullptr /* overhangs */); 73a3024bd7026deb777556dd75dd34a719ea1c2b39Keisuke Kuroyanagi} 74a3024bd7026deb777556dd75dd34a719ea1c2b39Keisuke Kuroyanagi 75318ca04079bd6242cb6186d9005b9caeee22e845Seigo Nonakabool MinikinUtils::hasVariationSelector(const Typeface* typeface, uint32_t codepoint, uint32_t vs) { 76bad99183916ba2bac6659efc8a28273e344ba511sergeyv const Typeface* resolvedFace = Typeface::resolveDefault(typeface); 77bb1a96647a82df5a134bf631fc9db342e7ef61deSeigo Nonaka return resolvedFace->fFontCollection->hasVariationSelector(codepoint, vs); 78bb1a96647a82df5a134bf631fc9db342e7ef61deSeigo Nonaka} 79bb1a96647a82df5a134bf631fc9db342e7ef61deSeigo Nonaka 80ae1aa85d0c7305bb621f1f8003bd674285aa3b63Seigo Nonakafloat MinikinUtils::xOffsetForTextAlign(Paint* paint, const minikin::Layout& layout) { 81f2114d5646194100242206b267ddd6e7194b7da9Raph Levien switch (paint->getTextAlign()) { 826ba30b85ddfbe37c338ee8dde3dd33322eb38d47Behdad Esfahbod case Paint::kCenter_Align: 83f2114d5646194100242206b267ddd6e7194b7da9Raph Levien return layout.getAdvance() * -0.5f; 84f2114d5646194100242206b267ddd6e7194b7da9Raph Levien break; 856ba30b85ddfbe37c338ee8dde3dd33322eb38d47Behdad Esfahbod case Paint::kRight_Align: 86f2114d5646194100242206b267ddd6e7194b7da9Raph Levien return -layout.getAdvance(); 87f2114d5646194100242206b267ddd6e7194b7da9Raph Levien break; 88f2114d5646194100242206b267ddd6e7194b7da9Raph Levien default: 89f2114d5646194100242206b267ddd6e7194b7da9Raph Levien break; 90f2114d5646194100242206b267ddd6e7194b7da9Raph Levien } 91f2114d5646194100242206b267ddd6e7194b7da9Raph Levien return 0; 92f2114d5646194100242206b267ddd6e7194b7da9Raph Levien} 93f2114d5646194100242206b267ddd6e7194b7da9Raph Levien 94ae1aa85d0c7305bb621f1f8003bd674285aa3b63Seigo Nonakafloat MinikinUtils::hOffsetForTextAlign(Paint* paint, const minikin::Layout& layout, 951bcacfdcab0eaa0cee92bd7f5a1b5e271dd68e52John Reck const SkPath& path) { 969d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien float align = 0; 979d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien switch (paint->getTextAlign()) { 986ba30b85ddfbe37c338ee8dde3dd33322eb38d47Behdad Esfahbod case Paint::kCenter_Align: 999d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien align = -0.5f; 1009d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien break; 1016ba30b85ddfbe37c338ee8dde3dd33322eb38d47Behdad Esfahbod case Paint::kRight_Align: 1029d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien align = -1; 1039d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien break; 1049d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien default: 1059d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien return 0; 1069d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien } 1079d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien SkPathMeasure measure(path, false); 1089d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien return align * (layout.getAdvance() - measure.getLength()); 1099d2b5e1930bfc4b1da1c865843c247c708ea1565Raph Levien} 11020866c140438a9aca3e1ad09fe646308678e9383Seigo Nonaka} // namespace android 111