19cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien/* 29cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * Copyright (C) 2013 The Android Open Source Project 39cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * 49cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * Licensed under the Apache License, Version 2.0 (the "License"); 59cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * you may not use this file except in compliance with the License. 69cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * You may obtain a copy of the License at 79cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * 89cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * http://www.apache.org/licenses/LICENSE-2.0 99cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * 109cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * Unless required by applicable law or agreed to in writing, software 119cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * distributed under the License is distributed on an "AS IS" BASIS, 129cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * See the License for the specific language governing permissions and 149cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien * limitations under the License. 159cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien */ 169cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 17ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien#define LOG_TAG "Minikin" 1869d4fba2f2b7bb2c248cc0e78cf277a6e44665f8Dan Albert 19d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien#include <algorithm> 209cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <fstream> 219cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <iostream> // for debugging 22555d84c6f98eafcbe677cdcb8e9605760acd8ce5Mark Salyzyn#include <math.h> 2369d4fba2f2b7bb2c248cc0e78cf277a6e44665f8Dan Albert#include <string> 24555d84c6f98eafcbe677cdcb8e9605760acd8ce5Mark Salyzyn#include <unicode/ubidi.h> 25c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader#include <unicode/utf16.h> 2669d4fba2f2b7bb2c248cc0e78cf277a6e44665f8Dan Albert#include <vector> 279cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2839ab40115fae6d0c948e435233b3dd997ee7d8e5Mark Salyzyn#include <log/log.h> 294d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/JenkinsHash.h> 304d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/LruCache.h> 31fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka#include <utils/Singleton.h> 324d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/String16.h> 334d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 34ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien#include <hb-icu.h> 352a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka#include <hb-ot.h> 36ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 37198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka#include "FontLanguage.h" 386d9dcd2cf3d3ed26a886e02d94c907311e7b1f83Seigo Nonaka#include "FontLanguageListCache.h" 3989e80237bc27af084c9ff316d4f47abf426eced8Seigo Nonaka#include "HbFontCache.h" 40555d84c6f98eafcbe677cdcb8e9605760acd8ce5Mark Salyzyn#include "LayoutUtils.h" 41b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien#include "MinikinInternal.h" 42bab3b98ceb29fa3fc5d8832284312859d7f32cc7Roozbeh Pournader#include <minikin/Emoji.h> 439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <minikin/Layout.h> 449cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 459cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienusing std::string; 469cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienusing std::vector; 479cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 488920e81717c6e51b92ff8f4479a1f959af260556John Recknamespace minikin { 498920e81717c6e51b92ff8f4479a1f959af260556John Reck 5086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levienconst int kDirection_Mask = 0x1; 5186fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 52288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbodstruct LayoutContext { 53288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod MinikinPaint paint; 54288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod FontStyle style; 55288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod std::vector<hb_font_t*> hbFonts; // parallel to mFaces 56288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 57288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void clearHbFonts() { 58288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod for (size_t i = 0; i < hbFonts.size(); i++) { 5989e80237bc27af084c9ff316d4f47abf426eced8Seigo Nonaka hb_font_set_funcs(hbFonts[i], nullptr, nullptr, nullptr); 60aaa4e3470270496e6eb80704eadecb2cb7c56bf0Raph Levien hb_font_destroy(hbFonts[i]); 61288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 62288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod hbFonts.clear(); 63288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 64288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod}; 65288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 664d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien// Layout cache datatypes 674d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 684d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienclass LayoutCacheKey { 694d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 70dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka LayoutCacheKey(const std::shared_ptr<FontCollection>& collection, const MinikinPaint& paint, 71dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka FontStyle style, const uint16_t* chars, size_t start, size_t count, size_t nchars, 72dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka bool dir) 73cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe : mChars(chars), mNchars(nchars), 74cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe mStart(start), mCount(count), mId(collection->getId()), mStyle(style), 75448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien mSize(paint.size), mScaleX(paint.scaleX), mSkewX(paint.skewX), 768e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod mLetterSpacing(paint.letterSpacing), 779d48271c0480c27402cfba359f45964637927a63Keisuke Kuroyanagi mPaintFlags(paint.paintFlags), mHyphenEdit(paint.hyphenEdit), mIsRtl(dir), 789d48271c0480c27402cfba359f45964637927a63Keisuke Kuroyanagi mHash(computeHash()) { 794d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 804d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool operator==(const LayoutCacheKey &other) const; 819d48271c0480c27402cfba359f45964637927a63Keisuke Kuroyanagi 8214e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka android::hash_t hash() const { 839d48271c0480c27402cfba359f45964637927a63Keisuke Kuroyanagi return mHash; 849d48271c0480c27402cfba359f45964637927a63Keisuke Kuroyanagi } 854d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 86288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void copyText() { 87288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod uint16_t* charsCopy = new uint16_t[mNchars]; 88288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod memcpy(charsCopy, mChars, mNchars * sizeof(uint16_t)); 89288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mChars = charsCopy; 90288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 91288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void freeText() { 92288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod delete[] mChars; 93288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mChars = NULL; 94288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 95288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 9699ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka void doLayout(Layout* layout, LayoutContext* ctx, 9799ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka const std::shared_ptr<FontCollection>& collection) const { 98288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layout->mAdvances.resize(mCount, 0); 99288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod ctx->clearHbFonts(); 10099ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka layout->doLayoutRun(mChars, mStart, mCount, mNchars, mIsRtl, ctx, collection); 101288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 102288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 1034d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienprivate: 104288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod const uint16_t* mChars; 105288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod size_t mNchars; 1064d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t mStart; 1074d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t mCount; 1084d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien uint32_t mId; // for the font collection 1094d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien FontStyle mStyle; 1104d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien float mSize; 111448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float mScaleX; 112448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float mSkewX; 1138e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod float mLetterSpacing; 114893399732b64203133c22ad3c1f3535e46bf35a7Raph Levien int32_t mPaintFlags; 1156c4d167bff33c24c239d77ddb1044b18d180766aRaph Levien HyphenEdit mHyphenEdit; 1164d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool mIsRtl; 1174d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // Note: any fields added to MinikinPaint must also be reflected here. 1184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // TODO: language matching (possibly integrate into style) 11914e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka android::hash_t mHash; 1209d48271c0480c27402cfba359f45964637927a63Keisuke Kuroyanagi 12114e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka android::hash_t computeHash() const; 1224d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 1234d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 12414e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonakaclass LayoutCache : private android::OnEntryRemoved<LayoutCacheKey, Layout*> { 1254d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 1264d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCache() : mCache(kMaxEntries) { 1274d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mCache.setOnEntryRemovedListener(this); 1284d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1294d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 130288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void clear() { 131288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mCache.clear(); 132288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 133288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 134dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka Layout* get(LayoutCacheKey& key, LayoutContext* ctx, 135dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka const std::shared_ptr<FontCollection>& collection) { 136288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod Layout* layout = mCache.get(key); 137288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod if (layout == NULL) { 138288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod key.copyText(); 13999ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka layout = new Layout(); 14099ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka key.doLayout(layout, ctx, collection); 141288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mCache.put(key, layout); 142288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 143288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod return layout; 144288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 145288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 146288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbodprivate: 1474d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // callback for OnEntryRemoved 1484d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien void operator()(LayoutCacheKey& key, Layout*& value) { 149288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod key.freeText(); 1504d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien delete value; 1514d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1524d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 15314e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka android::LruCache<LayoutCacheKey, Layout*> mCache; 154288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 1554d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien //static const size_t kMaxEntries = LruCache<LayoutCacheKey, Layout*>::kUnlimitedCapacity; 1564d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1574d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // TODO: eviction based on memory footprint; for now, we just use a constant 1584d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // number of strings 1594d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien static const size_t kMaxEntries = 5000; 1604d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 1614d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1620bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournaderstatic unsigned int disabledDecomposeCompatibility(hb_unicode_funcs_t*, hb_codepoint_t, 1630bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_codepoint_t*, void*) { 1640bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader return 0; 1650bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader} 1660bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader 167fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonakaclass LayoutEngine : public ::android::Singleton<LayoutEngine> { 1684d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 1694d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutEngine() { 1700bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader unicodeFunctions = hb_unicode_funcs_create(hb_icu_get_unicode_funcs()); 1710bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader /* Disable the function used for compatibility decomposition */ 1720bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_unicode_funcs_set_decompose_compatibility_func( 1730bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader unicodeFunctions, disabledDecomposeCompatibility, NULL, NULL); 1744d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hbBuffer = hb_buffer_create(); 1750bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_buffer_set_unicode_funcs(hbBuffer, unicodeFunctions); 1764d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1774d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1784d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_buffer_t* hbBuffer; 1790bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_unicode_funcs_t* unicodeFunctions; 1804d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCache layoutCache; 1814d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 1824d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienbool LayoutCacheKey::operator==(const LayoutCacheKey& other) const { 184448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien return mId == other.mId 185448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mStart == other.mStart 186448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mCount == other.mCount 187448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mStyle == other.mStyle 188448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mSize == other.mSize 189448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mScaleX == other.mScaleX 190448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mSkewX == other.mSkewX 1918e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod && mLetterSpacing == other.mLetterSpacing 192448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mPaintFlags == other.mPaintFlags 1936c4d167bff33c24c239d77ddb1044b18d180766aRaph Levien && mHyphenEdit == other.mHyphenEdit 194448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mIsRtl == other.mIsRtl 195288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod && mNchars == other.mNchars 196288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod && !memcmp(mChars, other.mChars, mNchars * sizeof(uint16_t)); 1974d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 1984d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 19914e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonakaandroid::hash_t LayoutCacheKey::computeHash() const { 20014e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka uint32_t hash = android::JenkinsHashMix(0, mId); 20114e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMix(hash, mStart); 20214e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMix(hash, mCount); 20314e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMix(hash, hash_type(mStyle)); 20414e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMix(hash, hash_type(mSize)); 20514e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMix(hash, hash_type(mScaleX)); 20614e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMix(hash, hash_type(mSkewX)); 20714e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMix(hash, hash_type(mLetterSpacing)); 20814e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMix(hash, hash_type(mPaintFlags)); 209c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hash = android::JenkinsHashMix(hash, hash_type(mHyphenEdit.getHyphen())); 21014e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMix(hash, hash_type(mIsRtl)); 21114e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka hash = android::JenkinsHashMixShorts(hash, mChars, mNchars); 21214e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka return android::JenkinsHashWhiten(hash); 2134d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 2144d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 21514e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonakaandroid::hash_t hash_type(const LayoutCacheKey& key) { 2164d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return key.hash(); 2174d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 2184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 219ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienvoid MinikinRect::join(const MinikinRect& r) { 220ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (isEmpty()) { 221ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien set(r); 222ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else if (!r.isEmpty()) { 223ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mLeft = std::min(mLeft, r.mLeft); 224ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mTop = std::min(mTop, r.mTop); 225ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mRight = std::max(mRight, r.mRight); 226ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mBottom = std::max(mBottom, r.mBottom); 227ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 228ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 229ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 2306da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbodvoid Layout::reset() { 2316da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mGlyphs.clear(); 2326da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mFaces.clear(); 2336da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mBounds.setEmpty(); 2346da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mAdvances.clear(); 2356da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mAdvance = 0; 2366da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod} 2376da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod 238bae347682989d2627081310129a5b60541ed6ad0Seigo Nonakastatic hb_position_t harfbuzzGetGlyphHorizontalAdvance(hb_font_t* /* hbFont */, void* fontData, 239bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka hb_codepoint_t glyph, void* /* userData */) { 2404d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinPaint* paint = reinterpret_cast<MinikinPaint*>(fontData); 241dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka float advance = paint->font->GetHorizontalAdvance(glyph, *paint); 242bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien return 256 * advance + 0.5; 2439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2449cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 245bae347682989d2627081310129a5b60541ed6ad0Seigo Nonakastatic hb_bool_t harfbuzzGetGlyphHorizontalOrigin(hb_font_t* /* hbFont */, void* /* fontData */, 246bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka hb_codepoint_t /* glyph */, hb_position_t* /* x */, hb_position_t* /* y */, 247bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka void* /* userData */) { 2489cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien // Just return true, following the way that Harfbuzz-FreeType 2499cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien // implementation does. 2509cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return true; 2519cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2529cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 25358ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonakahb_font_funcs_t* getHbFontFuncs(bool forColorBitmapFont) { 254fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka assertMinikinLocked(); 255fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka 25658ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka static hb_font_funcs_t* hbFuncs = nullptr; 25758ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka static hb_font_funcs_t* hbFuncsForColorBitmap = nullptr; 25858ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka 25958ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka hb_font_funcs_t** funcs = forColorBitmapFont ? &hbFuncs : &hbFuncsForColorBitmap; 26058ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka if (*funcs == nullptr) { 26158ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka *funcs = hb_font_funcs_create(); 26258ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka if (forColorBitmapFont) { 26358ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka // Don't override the h_advance function since we use HarfBuzz's implementation for 26458ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka // emoji for performance reasons. 26558ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka // Note that it is technically possible for a TrueType font to have outline and embedded 26658ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka // bitmap at the same time. We ignore modified advances of hinted outline glyphs in that 26758ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka // case. 2680decbb3686f9fe929bed1664b11366a00520e86aSeigo Nonaka } else { 2690decbb3686f9fe929bed1664b11366a00520e86aSeigo Nonaka // Override the h_advance function since we can't use HarfBuzz's implemenation. It may 2700decbb3686f9fe929bed1664b11366a00520e86aSeigo Nonaka // return the wrong value if the font uses hinting aggressively. 2710decbb3686f9fe929bed1664b11366a00520e86aSeigo Nonaka hb_font_funcs_set_glyph_h_advance_func(*funcs, harfbuzzGetGlyphHorizontalAdvance, 0, 0); 27258ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka } 27358ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka hb_font_funcs_set_glyph_h_origin_func(*funcs, harfbuzzGetGlyphHorizontalOrigin, 0, 0); 27458ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka hb_font_funcs_make_immutable(*funcs); 2759cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 27658ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka return *funcs; 27758ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka} 27858ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka 27958ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonakastatic bool isColorBitmapFont(hb_font_t* font) { 28058ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka hb_face_t* face = hb_font_get_face(font); 28158ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka HbBlob cbdt(hb_face_reference_table(face, HB_TAG('C', 'B', 'D', 'T'))); 28258ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka return cbdt.size() > 0; 2839cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2849cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2859cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienstatic float HBFixedToFloat(hb_position_t v) 2869cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien{ 2879cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return scalbnf (v, -8); 2889cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2899cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2909cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienstatic hb_position_t HBFloatToFixed(float v) 2919cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien{ 2929cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return scalbnf (v, +8); 2939cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2949cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2959cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienvoid Layout::dump() const { 2969cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (size_t i = 0; i < mGlyphs.size(); i++) { 2979cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien const LayoutGlyph& glyph = mGlyphs[i]; 2989cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien std::cout << glyph.glyph_id << ": " << glyph.x << ", " << glyph.y << std::endl; 2999cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3009cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3019cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 302dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonakaint Layout::findFace(const FakedFont& face, LayoutContext* ctx) { 3039cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien unsigned int ix; 3049cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (ix = 0; ix < mFaces.size(); ix++) { 3059a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien if (mFaces[ix].font == face.font) { 3069cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return ix; 3079cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3089cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3099cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien mFaces.push_back(face); 3104d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // Note: ctx == NULL means we're copying from the cache, no need to create 3114d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // corresponding hb_font object. 3124d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (ctx != NULL) { 31389e80237bc27af084c9ff316d4f47abf426eced8Seigo Nonaka hb_font_t* font = getHbFontLocked(face.font); 31458ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka hb_font_set_funcs(font, getHbFontFuncs(isColorBitmapFont(font)), &ctx->paint, 0); 3154d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien ctx->hbFonts.push_back(font); 3164d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 3179cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return ix; 3189cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3199cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 320ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienstatic hb_script_t codePointToScript(hb_codepoint_t codepoint) { 3214d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien static hb_unicode_funcs_t* u = 0; 322ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (!u) { 3230bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader u = LayoutEngine::getInstance().unicodeFunctions; 324ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 325ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return hb_unicode_script(u, codepoint); 326ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 327ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 3284d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic hb_codepoint_t decodeUtf16(const uint16_t* chars, size_t len, ssize_t* iter) { 329ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const uint16_t v = chars[(*iter)++]; 330ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // test whether v in (0xd800..0xdfff), lead or trail surrogate 331ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if ((v & 0xf800) == 0xd800) { 332ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // test whether v in (0xd800..0xdbff), lead surrogate 333ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (size_t(*iter) < len && (v & 0xfc00) == 0xd800) { 334ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const uint16_t v2 = chars[(*iter)++]; 335ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // test whether v2 in (0xdc00..0xdfff), trail surrogate 336ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if ((v2 & 0xfc00) == 0xdc00) { 337ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // (0xd800 0xdc00) in utf-16 maps to 0x10000 in ucs-32 338ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const hb_codepoint_t delta = (0xd800 << 10) + 0xdc00 - 0x10000; 339ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return (((hb_codepoint_t)v) << 10) + v2 - delta; 340ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 341b8208bc19c178b73175f76323381a1eeb8059807Behdad Esfahbod (*iter) -= 1; 342b8208bc19c178b73175f76323381a1eeb8059807Behdad Esfahbod return 0xFFFDu; 343ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else { 344b8208bc19c178b73175f76323381a1eeb8059807Behdad Esfahbod return 0xFFFDu; 345ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 346ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else { 347ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return v; 348ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 349ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 350ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 3514d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic hb_script_t getScriptRun(const uint16_t* chars, size_t len, ssize_t* iter) { 352ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (size_t(*iter) == len) { 353ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return HB_SCRIPT_UNKNOWN; 354ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 355ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien uint32_t cp = decodeUtf16(chars, len, iter); 356ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_script_t current_script = codePointToScript(cp); 357ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien for (;;) { 358ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (size_t(*iter) == len) 359ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien break; 360ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const ssize_t prev_iter = *iter; 361ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien cp = decodeUtf16(chars, len, iter); 362ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const hb_script_t script = codePointToScript(cp); 363ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (script != current_script) { 364ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (current_script == HB_SCRIPT_INHERITED || 365ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien current_script == HB_SCRIPT_COMMON) { 366ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien current_script = script; 367ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else if (script == HB_SCRIPT_INHERITED || 368ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien script == HB_SCRIPT_COMMON) { 369ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien continue; 370ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else { 371ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien *iter = prev_iter; 372ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien break; 373ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 374ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 375ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 376ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (current_script == HB_SCRIPT_INHERITED) { 377ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien current_script = HB_SCRIPT_COMMON; 378ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 379ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 380ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return current_script; 381ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 382ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 3834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien/** 384e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien * Disable certain scripts (mostly those with cursive connection) from having letterspacing 385e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien * applied. See https://github.com/behdad/harfbuzz/issues/64 for more details. 386e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien */ 387e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levienstatic bool isScriptOkForLetterspacing(hb_script_t script) { 388e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien return !( 389e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_ARABIC || 390e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_NKO || 391e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_PSALTER_PAHLAVI || 392e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_MANDAIC || 393e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_MONGOLIAN || 394e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_PHAGS_PA || 395e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_DEVANAGARI || 396e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_BENGALI || 397e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_GURMUKHI || 398e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_MODI || 399e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_SHARADA || 400e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_SYLOTI_NAGRI || 401e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_TIRHUTA || 402e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_OGHAM 403e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien ); 404e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien} 405e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien 4066292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagiclass BidiText { 4076292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagipublic: 4086292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi class Iter { 4096292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi public: 4106292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi struct RunInfo { 4116292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi int32_t mRunStart; 4126292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi int32_t mRunLength; 4136292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool mIsRtl; 4146292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi }; 4156292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4166292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi Iter(UBiDi* bidi, size_t start, size_t end, size_t runIndex, size_t runCount, bool isRtl); 4176292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4186292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool operator!= (const Iter& other) const { 4196292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return mIsEnd != other.mIsEnd || mNextRunIndex != other.mNextRunIndex 4206292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi || mBidi != other.mBidi; 4216292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4226292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4236292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const RunInfo& operator* () const { 4246292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return mRunInfo; 4256292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4266292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4276292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const Iter& operator++ () { 4286292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi updateRunInfo(); 4296292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return *this; 4306292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4316292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4326292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi private: 4336292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi UBiDi* const mBidi; 4346292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool mIsEnd; 4356292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi size_t mNextRunIndex; 4366292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const size_t mRunCount; 4376292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const int32_t mStart; 4386292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const int32_t mEnd; 4396292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi RunInfo mRunInfo; 4406292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4416292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi void updateRunInfo(); 4426292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi }; 4436292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4446292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi BidiText(const uint16_t* buf, size_t start, size_t count, size_t bufSize, int bidiFlags); 4456292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4466292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ~BidiText() { 4476292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (mBidi) { 4486292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ubidi_close(mBidi); 4496292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4506292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4516292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4526292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi Iter begin () const { 4536292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return Iter(mBidi, mStart, mEnd, 0, mRunCount, mIsRtl); 4546292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4556292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4566292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi Iter end() const { 4576292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return Iter(mBidi, mStart, mEnd, mRunCount, mRunCount, mIsRtl); 4586292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4596292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4606292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagiprivate: 4616292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const size_t mStart; 4626292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const size_t mEnd; 4636292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const size_t mBufSize; 4646292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi UBiDi* mBidi; 4656292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi size_t mRunCount; 4666292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool mIsRtl; 4676292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4686261d824595d3590b5355d8dea80949769d8e38eElliott Hughes BidiText(const BidiText&) = delete; 4696261d824595d3590b5355d8dea80949769d8e38eElliott Hughes void operator=(const BidiText&) = delete; 4706292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi}; 4716292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4726292e1a966da86af7045c356fcad6ab8864089b8Keisuke KuroyanagiBidiText::Iter::Iter(UBiDi* bidi, size_t start, size_t end, size_t runIndex, size_t runCount, 4736292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool isRtl) 4746292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi : mBidi(bidi), mIsEnd(runIndex == runCount), mNextRunIndex(runIndex), mRunCount(runCount), 4756292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mStart(start), mEnd(end), mRunInfo() { 4766292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (mRunCount == 1) { 4776292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mRunStart = start; 4786292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mRunLength = end - start; 4796292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mIsRtl = isRtl; 4806292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mNextRunIndex = mRunCount; 4816292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 4826292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4836292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi updateRunInfo(); 4846292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi} 4856292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4866292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagivoid BidiText::Iter::updateRunInfo() { 4876292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (mNextRunIndex == mRunCount) { 4886292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi // All runs have been iterated. 4896292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mIsEnd = true; 4906292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 4916292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4926292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi int32_t startRun = -1; 4936292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi int32_t lengthRun = -1; 4946292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const UBiDiDirection runDir = ubidi_getVisualRun(mBidi, mNextRunIndex, &startRun, &lengthRun); 4956292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mNextRunIndex++; 4966292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (startRun == -1 || lengthRun == -1) { 4976292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ALOGE("invalid visual run"); 4986292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi // skip the invalid run. 4996292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi updateRunInfo(); 5006292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5016292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5026292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const int32_t runEnd = std::min(startRun + lengthRun, mEnd); 5036292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mRunStart = std::max(startRun, mStart); 5046292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mRunLength = runEnd - mRunInfo.mRunStart; 5056292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (mRunInfo.mRunLength <= 0) { 5066292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi // skip the empty run. 5076292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi updateRunInfo(); 5086292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5096292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5106292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mIsRtl = (runDir == UBIDI_RTL); 5116292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi} 5126292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 5136292e1a966da86af7045c356fcad6ab8864089b8Keisuke KuroyanagiBidiText::BidiText(const uint16_t* buf, size_t start, size_t count, size_t bufSize, int bidiFlags) 5146292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi : mStart(start), mEnd(start + count), mBufSize(bufSize), mBidi(NULL), mRunCount(1), 5156292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mIsRtl((bidiFlags & kDirection_Mask) != 0) { 5166292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (bidiFlags == kBidi_Force_LTR || bidiFlags == kBidi_Force_RTL) { 5176292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi // force single run. 5186292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5196292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5206292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mBidi = ubidi_open(); 5216292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (!mBidi) { 5226292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ALOGE("error creating bidi object"); 5236292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5246292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5256292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi UErrorCode status = U_ZERO_ERROR; 526bab3b98ceb29fa3fc5d8832284312859d7f32cc7Roozbeh Pournader // Set callbacks to override bidi classes of new emoji 527bab3b98ceb29fa3fc5d8832284312859d7f32cc7Roozbeh Pournader ubidi_setClassCallback(mBidi, emojiBidiOverride, nullptr, nullptr, nullptr, &status); 528bab3b98ceb29fa3fc5d8832284312859d7f32cc7Roozbeh Pournader if (!U_SUCCESS(status)) { 529bab3b98ceb29fa3fc5d8832284312859d7f32cc7Roozbeh Pournader ALOGE("error setting bidi callback function, status = %d", status); 530bab3b98ceb29fa3fc5d8832284312859d7f32cc7Roozbeh Pournader return; 531bab3b98ceb29fa3fc5d8832284312859d7f32cc7Roozbeh Pournader } 532bab3b98ceb29fa3fc5d8832284312859d7f32cc7Roozbeh Pournader 5336292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi UBiDiLevel bidiReq = bidiFlags; 5346292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (bidiFlags == kBidi_Default_LTR) { 5356292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bidiReq = UBIDI_DEFAULT_LTR; 5366292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } else if (bidiFlags == kBidi_Default_RTL) { 5376292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bidiReq = UBIDI_DEFAULT_RTL; 5386292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5396292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ubidi_setPara(mBidi, buf, mBufSize, bidiReq, NULL, &status); 5406292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (!U_SUCCESS(status)) { 5416292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ALOGE("error calling ubidi_setPara, status = %d", status); 5426292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5436292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5446292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const int paraDir = ubidi_getParaLevel(mBidi) & kDirection_Mask; 5456292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const ssize_t rc = ubidi_countRuns(mBidi, &status); 5466292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (!U_SUCCESS(status) || rc < 0) { 5476292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ALOGW("error counting bidi runs, status = %d", status); 5486292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5496292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (!U_SUCCESS(status) || rc <= 1) { 5506292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mIsRtl = (paraDir == kBidi_RTL); 5516292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5526292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5536292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunCount = rc; 5546292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi} 5556292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 5564d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::doLayout(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 55799ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka int bidiFlags, const FontStyle &style, const MinikinPaint &paint, 55899ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka const std::shared_ptr<FontCollection>& collection) { 559fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka android::AutoMutex _l(gMinikinLock); 560fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka 56109f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod LayoutContext ctx; 56209f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod ctx.style = style; 56309f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod ctx.paint = paint; 56409f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod 5656da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod reset(); 5664d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mAdvances.resize(count, 0); 5676da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod 5686292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi for (const BidiText::Iter::RunInfo& runInfo : BidiText(buf, start, count, bufSize, bidiFlags)) { 5696292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi doLayoutRunCached(buf, runInfo.mRunStart, runInfo.mRunLength, bufSize, runInfo.mIsRtl, &ctx, 57099ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka start, collection, this, NULL); 5714d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 572288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod ctx.clearHbFonts(); 5734d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 5744d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 5756344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagifloat Layout::measureText(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 5766344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi int bidiFlags, const FontStyle &style, const MinikinPaint &paint, 577dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka const std::shared_ptr<FontCollection>& collection, float* advances) { 578fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka android::AutoMutex _l(gMinikinLock); 579fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka 5806344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi LayoutContext ctx; 5816344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi ctx.style = style; 5826344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi ctx.paint = paint; 5836344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi 5846344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi float advance = 0; 5856344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi for (const BidiText::Iter::RunInfo& runInfo : BidiText(buf, start, count, bufSize, bidiFlags)) { 5866344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi float* advancesForRun = advances ? advances + (runInfo.mRunStart - start) : advances; 5876344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advance += doLayoutRunCached(buf, runInfo.mRunStart, runInfo.mRunLength, bufSize, 5886344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi runInfo.mIsRtl, &ctx, 0, collection, NULL, advancesForRun); 5896344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 5906344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi 5916344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi ctx.clearHbFonts(); 5926344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi return advance; 5936344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi} 5946344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi 5956344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagifloat Layout::doLayoutRunCached(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 596dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka bool isRtl, LayoutContext* ctx, size_t dstStart, 597dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka const std::shared_ptr<FontCollection>& collection, Layout* layout, float* advances) { 598c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const uint32_t originalHyphen = ctx->paint.hyphenEdit.getHyphen(); 5996344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi float advance = 0; 6004d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (!isRtl) { 6014d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // left to right 6024e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka size_t wordstart = 6034e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka start == bufSize ? start : getPrevWordBreakForCache(buf, start + 1, bufSize); 6044d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t wordend; 6054d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t iter = start; iter < start + count; iter = wordend) { 6064e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka wordend = getNextWordBreakForCache(buf, iter, bufSize); 607c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Only apply hyphen to the first or last word in the string. 608c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader uint32_t hyphen = originalHyphen; 609c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (iter != start) { // Not the first word 610c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hyphen &= ~HyphenEdit::MASK_START_OF_LINE; 611c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 612c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (wordend < start + count) { // Not the last word 613c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hyphen &= ~HyphenEdit::MASK_END_OF_LINE; 614c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 615c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader ctx->paint.hyphenEdit = hyphen; 6163f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien size_t wordcount = std::min(start + count, wordend) - iter; 6176344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advance += doLayoutWord(buf + wordstart, iter - wordstart, wordcount, 6186344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi wordend - wordstart, isRtl, ctx, iter - dstStart, collection, layout, 6196344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advances ? advances + (iter - start) : advances); 6204d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien wordstart = wordend; 6214d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 6224d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } else { 6234d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // right to left 6244d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t wordstart; 6254d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t end = start + count; 6264e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka size_t wordend = end == 0 ? 0 : getNextWordBreakForCache(buf, end - 1, bufSize); 6274d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t iter = end; iter > start; iter = wordstart) { 6284e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka wordstart = getPrevWordBreakForCache(buf, iter, bufSize); 629c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Only apply hyphen to the first (rightmost) or last (leftmost) word in the string. 630c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader uint32_t hyphen = originalHyphen; 631c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (wordstart > start) { // Not the first word 632c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hyphen &= ~HyphenEdit::MASK_START_OF_LINE; 633c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 634c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (iter != end) { // Not the last word 635c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hyphen &= ~HyphenEdit::MASK_END_OF_LINE; 636c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 637c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader ctx->paint.hyphenEdit = hyphen; 6383f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien size_t bufStart = std::max(start, wordstart); 6396344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advance += doLayoutWord(buf + wordstart, bufStart - wordstart, iter - bufStart, 6406344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi wordend - wordstart, isRtl, ctx, bufStart - dstStart, collection, layout, 6416344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advances ? advances + (bufStart - start) : advances); 6424d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien wordend = wordstart; 6434d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 64486fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 6456344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi return advance; 64686fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien} 64786fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 6486344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagifloat Layout::doLayoutWord(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 649dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka bool isRtl, LayoutContext* ctx, size_t bufStart, 650dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka const std::shared_ptr<FontCollection>& collection, Layout* layout, float* advances) { 651fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka LayoutCache& cache = LayoutEngine::getInstance().layoutCache; 6526344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi LayoutCacheKey key(collection, ctx->paint, ctx->style, buf, start, count, bufSize, isRtl); 653acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka 654acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka float wordSpacing = count == 1 && isWordSpace(buf[start]) ? ctx->paint.wordSpacing : 0; 655acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka 656acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka float advance; 657acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka if (ctx->paint.skipCache()) { 65899ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka Layout layoutForWord; 65999ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka key.doLayout(&layoutForWord, ctx, collection); 6606344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi if (layout) { 661acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka layout->appendLayout(&layoutForWord, bufStart, wordSpacing); 6626344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 6636344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi if (advances) { 6646344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi layoutForWord.getAdvances(advances); 6656344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 666acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka advance = layoutForWord.getAdvance(); 667288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } else { 668fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka Layout* layoutForWord = cache.get(key, ctx, collection); 6696344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi if (layout) { 670acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka layout->appendLayout(layoutForWord, bufStart, wordSpacing); 6716344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 6726344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi if (advances) { 6736344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi layoutForWord->getAdvances(advances); 6746344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 675acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka advance = layoutForWord->getAdvance(); 6764d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 677acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka 678acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka if (wordSpacing != 0) { 679acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka advance += wordSpacing; 680acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka if (advances) { 681acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka advances[0] += wordSpacing; 682acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka } 683acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka } 684acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka return advance; 6854d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 6864d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 6875986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbodstatic void addFeatures(const string &str, vector<hb_feature_t>* features) { 6885986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod if (!str.size()) 6895986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod return; 69067ea671fe421d0e4642caef619ec39ec86bdcaefRaph Levien 6915986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod const char* start = str.c_str(); 6925986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod const char* end = start + str.size(); 6935986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod 6945986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod while (start < end) { 6955986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod static hb_feature_t feature; 6965986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod const char* p = strchr(start, ','); 6975986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod if (!p) 6985986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod p = end; 6995986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod /* We do not allow setting features on ranges. As such, reject any 7005986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod * setting that has non-universal range. */ 7015986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod if (hb_feature_from_string (start, p - start, &feature) 7025986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod && feature.start == 0 && feature.end == (unsigned int) -1) 7035986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod features->push_back(feature); 7045986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod start = p + 1; 7055986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod } 7064043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien} 7074043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien 708829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournaderstatic const hb_codepoint_t CHAR_HYPHEN = 0x2010; /* HYPHEN */ 709829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader 710c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournaderstatic inline hb_codepoint_t determineHyphenChar(hb_codepoint_t preferredHyphen, hb_font_t* font) { 711829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader hb_codepoint_t glyph; 712829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader if (preferredHyphen == 0x058A /* ARMENIAN_HYPHEN */ 713c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader || preferredHyphen == 0x05BE /* HEBREW PUNCTUATION MAQAF */ 714c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader || preferredHyphen == 0x1400 /* CANADIAN SYLLABIC HYPHEN */) { 715829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader if (hb_font_get_nominal_glyph(font, preferredHyphen, &glyph)) { 716829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader return preferredHyphen; 717829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader } else { 718829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader // The original hyphen requested was not supported. Let's try and see if the 719829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader // Unicode hyphen is supported. 720829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader preferredHyphen = CHAR_HYPHEN; 721829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader } 722829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader } 723829f28371c4c4926965a5dbaec256f7e76e415f8Roozbeh Pournader if (preferredHyphen == CHAR_HYPHEN) { /* HYPHEN */ 724c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Fallback to ASCII HYPHEN-MINUS if the font didn't have a glyph for the preferred hyphen. 725c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Note that we intentionally don't do anything special if the font doesn't have a 726c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // HYPHEN-MINUS either, so a tofu could be shown, hinting towards something missing. 727c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (!hb_font_get_nominal_glyph(font, preferredHyphen, &glyph)) { 728c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader return 0x002D; // HYPHEN-MINUS 729c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 730c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 731c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader return preferredHyphen; 732c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader} 733c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 734c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournaderstatic inline void addHyphenToHbBuffer(hb_buffer_t* buffer, hb_font_t* font, uint32_t hyphen, 735c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader uint32_t cluster) { 736c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const uint32_t* hyphenStr = HyphenEdit::getHyphenString(hyphen); 737c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader while (*hyphenStr != 0) { 738c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hb_codepoint_t hyphenChar = determineHyphenChar(*hyphenStr, font); 739c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hb_buffer_add(buffer, hyphenChar, cluster); 740c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hyphenStr++; 741c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 742c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader} 743c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 744c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader// Returns the cluster value assigned to the first codepoint added to the buffer, which can be used 745c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader// to translate cluster values returned by HarfBuzz to input indices. 746c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournaderstatic inline uint32_t addToHbBuffer(hb_buffer_t* buffer, 747c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const uint16_t* buf, size_t start, size_t count, size_t bufSize, 748c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader ssize_t scriptRunStart, ssize_t scriptRunEnd, 749c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader HyphenEdit hyphenEdit, hb_font_t* hbFont) { 750c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 751c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Only hyphenate the very first script run for starting hyphens. 752c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const uint32_t startHyphen = (scriptRunStart == 0) 753c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader ? hyphenEdit.getStart() 754c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader : HyphenEdit::NO_EDIT; 755c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Only hyphenate the very last script run for ending hyphens. 756c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const uint32_t endHyphen = (static_cast<size_t>(scriptRunEnd) == count) 757c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader ? hyphenEdit.getEnd() 758c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader : HyphenEdit::NO_EDIT; 759c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 760c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // In the following code, we drop the pre-context and/or post-context if there is a 761c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // hyphen edit at that end. This is not absolutely necessary, since HarfBuzz uses 762c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // contexts only for joining scripts at the moment, e.g. to determine if the first or 763c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // last letter of a text range to shape should take a joining form based on an 764c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // adjacent letter or joiner (that comes from the context). 765c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // 766c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // TODO: Revisit this for: 767c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // 1. Desperate breaks for joining scripts like Arabic (where it may be better to keep 768c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // the context); 769c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // 2. Special features like start-of-word font features (not implemented in HarfBuzz 770c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // yet). 771c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 772c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // We don't have any start-of-line replacement edit yet, so we don't need to check for 773c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // those. 774c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (HyphenEdit::isInsertion(startHyphen)) { 775c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // A cluster value of zero guarantees that the inserted hyphen will be in the same 776c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // cluster with the next codepoint, since there is no pre-context. 777c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader addHyphenToHbBuffer(buffer, hbFont, startHyphen, 0 /* cluster value */); 778c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 779c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 780c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const uint16_t* hbText; 781c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader int hbTextLength; 782c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader unsigned int hbItemOffset; 783c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader unsigned int hbItemLength = scriptRunEnd - scriptRunStart; // This is >= 1. 784c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 785c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const bool hasEndInsertion = HyphenEdit::isInsertion(endHyphen); 786c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const bool hasEndReplacement = HyphenEdit::isReplacement(endHyphen); 787c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (hasEndReplacement) { 788c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Skip the last code unit while copying the buffer for HarfBuzz if it's a replacement. We 789c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // don't need to worry about non-BMP characters yet since replacements are only done for 790c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // code units at the moment. 791c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hbItemLength -= 1; 792c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 793c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 794c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (startHyphen == HyphenEdit::NO_EDIT) { 795c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // No edit at the beginning. Use the whole pre-context. 796c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hbText = buf; 797c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hbItemOffset = start + scriptRunStart; 798c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } else { 799c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // There's an edit at the beginning. Drop the pre-context and start the buffer at where we 800c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // want to start shaping. 801c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hbText = buf + start + scriptRunStart; 802c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hbItemOffset = 0; 803c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 804c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 805c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (endHyphen == HyphenEdit::NO_EDIT) { 806c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // No edit at the end, use the whole post-context. 807c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hbTextLength = (buf + bufSize) - hbText; 808c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } else { 809c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // There is an edit at the end. Drop the post-context. 810c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hbTextLength = hbItemOffset + hbItemLength; 811c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 812c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 813c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hb_buffer_add_utf16(buffer, hbText, hbTextLength, hbItemOffset, hbItemLength); 814c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 815c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader unsigned int numCodepoints; 816c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hb_glyph_info_t* cpInfo = hb_buffer_get_glyph_infos(buffer, &numCodepoints); 817c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 818c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Add the hyphen at the end, if there's any. 819c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (hasEndInsertion || hasEndReplacement) { 820c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // When a hyphen is inserted, by assigning the added hyphen and the last 821c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // codepoint added to the HarfBuzz buffer to the same cluster, we can make sure 822c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // that they always remain in the same cluster, even if the last codepoint gets 823c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // merged into another cluster (for example when it's a combining mark). 824c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // 825c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // When a replacement happens instead, we want it to get the cluster value of 826c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // the character it's replacing, which is one "codepoint length" larger than 827c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // the last cluster. But since the character replaced is always just one 828c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // code unit, we can just add 1. 829c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader uint32_t hyphenCluster; 830c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (numCodepoints == 0) { 831c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Nothing was added to the HarfBuzz buffer. This can only happen if 832c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // we have a replacement that is replacing a one-code unit script run. 833c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hyphenCluster = 0; 834c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } else { 835c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hyphenCluster = cpInfo[numCodepoints - 1].cluster + (uint32_t) hasEndReplacement; 836c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 837c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader addHyphenToHbBuffer(buffer, hbFont, endHyphen, hyphenCluster); 838c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Since we have just added to the buffer, cpInfo no longer necessarily points to 839c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // the right place. Refresh it. 840c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader cpInfo = hb_buffer_get_glyph_infos(buffer, nullptr /* we don't need the size */); 841c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader } 842c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader return cpInfo[0].cluster; 843c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader} 844c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 845c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 84686fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levienvoid Layout::doLayoutRun(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 84799ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka bool isRtl, LayoutContext* ctx, const std::shared_ptr<FontCollection>& collection) { 8484d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_buffer_t* buffer = LayoutEngine::getInstance().hbBuffer; 84986fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien vector<FontCollection::Run> items; 85099ef32cef014231c0d544e8d4f97449695d429c0Seigo Nonaka collection->itemize(buf + start, count, ctx->style, &items); 85186fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 8524043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien vector<hb_feature_t> features; 8538e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // Disable default-on non-required ligature features if letter-spacing 8548e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // See http://dev.w3.org/csswg/css-text-3/#letter-spacing-property 8558e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // "When the effective spacing between two characters is not zero (due to 8568e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // either justification or a non-zero value of letter-spacing), user agents 8578e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // should not apply optional ligatures." 8588e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (fabs(ctx->paint.letterSpacing) > 0.03) 8598e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod { 8608e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod static const hb_feature_t no_liga = { HB_TAG('l', 'i', 'g', 'a'), 0, 0, ~0u }; 8618e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod static const hb_feature_t no_clig = { HB_TAG('c', 'l', 'i', 'g'), 0, 0, ~0u }; 8628e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod features.push_back(no_liga); 8638e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod features.push_back(no_clig); 8648e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 8655986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod addFeatures(ctx->paint.fontFeatureSettings, &features); 8664043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien 8678e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod double size = ctx->paint.size; 8688e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod double scaleX = ctx->paint.scaleX; 8698e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod 87086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien float x = mAdvance; 8719cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien float y = 0; 872dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka for (int run_ix = isRtl ? items.size() - 1 : 0; 873dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka isRtl ? run_ix >= 0 : run_ix < static_cast<int>(items.size()); 874dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonaka isRtl ? --run_ix : ++run_ix) { 8759cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien FontCollection::Run &run = items[run_ix]; 8769a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien if (run.fakedFont.font == NULL) { 8777c382381191b2280b53c375fe83dfc6217bbdfa9Raph Levien ALOGE("no font for run starting u+%04x length %d", buf[run.start], run.end - run.start); 8787c382381191b2280b53c375fe83dfc6217bbdfa9Raph Levien continue; 8797c382381191b2280b53c375fe83dfc6217bbdfa9Raph Levien } 8809a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien int font_ix = findFace(run.fakedFont, ctx); 8819a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien ctx->paint.font = mFaces[font_ix].font; 8829a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien ctx->paint.fakery = mFaces[font_ix].fakery; 8834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_font_t* hbFont = ctx->hbFonts[font_ix]; 8842967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader#ifdef VERBOSE_DEBUG 885bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka ALOGD("Run %zu, font %d [%d:%d]", run_ix, font_ix, run.start, run.end); 8869cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#endif 8878e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod 888448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hb_font_set_ppem(hbFont, size * scaleX, size); 889448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hb_font_set_scale(hbFont, HBFloatToFixed(size * scaleX), HBFloatToFixed(size)); 8909cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 89158ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka const bool is_color_bitmap_font = isColorBitmapFont(hbFont); 89258ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka 893d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien // TODO: if there are multiple scripts within a font in an RTL run, 894d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien // we need to reorder those runs. This is unlikely with our current 895d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien // font stack, but should be done for correctness. 896c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 897c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // Note: scriptRunStart and scriptRunEnd, as well as run.start and run.end, run between 0 898c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // and count. 899c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader ssize_t scriptRunEnd; 900c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader for (ssize_t scriptRunStart = run.start; 901c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader scriptRunStart < run.end; 902c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader scriptRunStart = scriptRunEnd) { 903c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader scriptRunEnd = scriptRunStart; 904c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader hb_script_t script = getScriptRun(buf + start, run.end, &scriptRunEnd /* iterator */); 905c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // After the last line, scriptRunEnd is guaranteed to have increased, since the only 906c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // time getScriptRun does not increase its iterator is when it has already reached the 907c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // end of the buffer. But that can't happen, since if we have already reached the end 908c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // of the buffer, we should have had (scriptRunEnd == run.end), which means 909c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // (scriptRunStart == run.end) which is impossible due to the exit condition of the for 910c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // loop. So we can be sure that scriptRunEnd > scriptRunStart. 911ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 912e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien double letterSpace = 0.0; 913e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien double letterSpaceHalfLeft = 0.0; 914e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien double letterSpaceHalfRight = 0.0; 915e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien 916e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien if (ctx->paint.letterSpacing != 0.0 && isScriptOkForLetterspacing(script)) { 917e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpace = ctx->paint.letterSpacing * size * scaleX; 918e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien if ((ctx->paint.paintFlags & LinearTextFlag) == 0) { 919e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpace = round(letterSpace); 920e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpaceHalfLeft = floor(letterSpace * 0.5); 921e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien } else { 922e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpaceHalfLeft = letterSpace * 0.5; 923e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien } 924e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpaceHalfRight = letterSpace - letterSpaceHalfLeft; 925e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien } 926e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien 9270bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_buffer_clear_contents(buffer); 928ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_buffer_set_script(buffer, script); 929d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien hb_buffer_set_direction(buffer, isRtl? HB_DIRECTION_RTL : HB_DIRECTION_LTR); 9306d9dcd2cf3d3ed26a886e02d94c907311e7b1f83Seigo Nonaka const FontLanguages& langList = 931fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka FontLanguageListCache::getById(ctx->style.getLanguageListId()); 9326d9dcd2cf3d3ed26a886e02d94c907311e7b1f83Seigo Nonaka if (langList.size() != 0) { 933198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka const FontLanguage* hbLanguage = &langList[0]; 934198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka for (size_t i = 0; i < langList.size(); ++i) { 935198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka if (langList[i].supportsHbScript(script)) { 936198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka hbLanguage = &langList[i]; 937198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka break; 938198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka } 939198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka } 94022462be7358f1facbe0c0074f8e58a41c2314b6eSeigo Nonaka hb_buffer_set_language(buffer, hbLanguage->getHbLanguage()); 9417b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 942c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 943c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const uint32_t clusterStart = addToHbBuffer( 944c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader buffer, 945c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader buf, start, count, bufSize, 946c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader scriptRunStart, scriptRunEnd, 947c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader ctx->paint.hyphenEdit, hbFont); 948c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 9494043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien hb_shape(hbFont, buffer, features.empty() ? NULL : &features[0], features.size()); 950ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien unsigned int numGlyphs; 9514d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_glyph_info_t* info = hb_buffer_get_glyph_infos(buffer, &numGlyphs); 9524d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_glyph_position_t* positions = hb_buffer_get_glyph_positions(buffer, NULL); 953c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 954c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // At this point in the code, the cluster values in the info buffer correspond to the 955c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // input characters with some shift. The cluster value clusterStart corresponds to the 956c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // first character passed to HarfBuzz, which is at buf[start + scriptRunStart] whose 957c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // advance needs to be saved into mAdvances[scriptRunStart]. So cluster values need to 958c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // be reduced by (clusterStart - scriptRunStart) to get converted to indices of 959c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader // mAdvances. 960c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader const ssize_t clusterOffset = clusterStart - scriptRunStart; 961c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader 9628e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (numGlyphs) 9638e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod { 964c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader mAdvances[info[0].cluster - clusterOffset] += letterSpaceHalfLeft; 9656740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien x += letterSpaceHalfLeft; 9668e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 967ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien for (unsigned int i = 0; i < numGlyphs; i++) { 9682967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader#ifdef VERBOSE_DEBUG 9692967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader ALOGD("%d %d %d %d", 9702967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader positions[i].x_advance, positions[i].y_advance, 9712967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader positions[i].x_offset, positions[i].y_offset); 9722967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader ALOGD("DoLayout %u: %f; %d, %d", 9732967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader info[i].codepoint, HBFixedToFloat(positions[i].x_advance), 9742967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader positions[i].x_offset, positions[i].y_offset); 9752967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader#endif 9768e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (i > 0 && info[i - 1].cluster != info[i].cluster) { 977c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader mAdvances[info[i - 1].cluster - clusterOffset] += letterSpaceHalfRight; 978c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader mAdvances[info[i].cluster - clusterOffset] += letterSpaceHalfLeft; 9796740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien x += letterSpace; 9808e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 9818e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod 982ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_codepoint_t glyph_ix = info[i].codepoint; 983ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien float xoff = HBFixedToFloat(positions[i].x_offset); 984448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float yoff = -HBFixedToFloat(positions[i].y_offset); 985448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien xoff += yoff * ctx->paint.skewX; 986ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien LayoutGlyph glyph = {font_ix, glyph_ix, x + xoff, y + yoff}; 987ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mGlyphs.push_back(glyph); 988ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien float xAdvance = HBFixedToFloat(positions[i].x_advance); 9896740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien if ((ctx->paint.paintFlags & LinearTextFlag) == 0) { 9906740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien xAdvance = roundf(xAdvance); 9916740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien } 992ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien MinikinRect glyphBounds; 99358ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka hb_glyph_extents_t extents = {}; 99458ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka if (is_color_bitmap_font && hb_font_get_glyph_extents(hbFont, glyph_ix, &extents)) { 99558ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka // Note that it is technically possible for a TrueType font to have outline and 99658ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka // embedded bitmap at the same time. We ignore modified bbox of hinted outline 99758ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka // glyphs in that case. 99858ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka glyphBounds.mLeft = roundf(HBFixedToFloat(extents.x_bearing)); 99958ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka glyphBounds.mTop = roundf(HBFixedToFloat(-extents.y_bearing)); 100058ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka glyphBounds.mRight = roundf(HBFixedToFloat(extents.x_bearing + extents.width)); 100158ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka glyphBounds.mBottom = 100258ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka roundf(HBFixedToFloat(-extents.y_bearing - extents.height)); 100358ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka } else { 100458ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka ctx->paint.font->GetBounds(&glyphBounds, glyph_ix, ctx->paint); 100558ee6af0c3f5ccef659119c8ffbeb8536fbb59e0Seigo Nonaka } 1006ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien glyphBounds.offset(x + xoff, y + yoff); 1007ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mBounds.join(glyphBounds); 1008c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader if (static_cast<size_t>(info[i].cluster - clusterOffset) < count) { 1009c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader mAdvances[info[i].cluster - clusterOffset] += xAdvance; 1010d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien } else { 1011bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka ALOGE("cluster %zu (start %zu) out of bounds of count %zu", 1012c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader info[i].cluster - clusterOffset, start, count); 1013d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien } 1014ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien x += xAdvance; 1015ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 10168e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (numGlyphs) 10178e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod { 1018c7ef4000c1e840c3d3b66e85a40ebd34a5a2a8eeRoozbeh Pournader mAdvances[info[numGlyphs - 1].cluster - clusterOffset] += letterSpaceHalfRight; 10196740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien x += letterSpaceHalfRight; 10208e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 10219cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 10229cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 1023bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien mAdvance = x; 10249cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 10259cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 1026acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonakavoid Layout::appendLayout(Layout* src, size_t start, float extraAdvance) { 102756c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod int fontMapStack[16]; 102856c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod int* fontMap; 102956c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod if (src->mFaces.size() < sizeof(fontMapStack) / sizeof(fontMapStack[0])) { 103056c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod fontMap = fontMapStack; 103156c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod } else { 103256c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod fontMap = new int[src->mFaces.size()]; 103356c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod } 10344d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = 0; i < src->mFaces.size(); i++) { 10354d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int font_ix = findFace(src->mFaces[i], NULL); 103656c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod fontMap[i] = font_ix; 10374d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 10384d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int x0 = mAdvance; 10394d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = 0; i < src->mGlyphs.size(); i++) { 10404d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutGlyph& srcGlyph = src->mGlyphs[i]; 10414d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int font_ix = fontMap[srcGlyph.font_ix]; 10424d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien unsigned int glyph_id = srcGlyph.glyph_id; 10434d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien float x = x0 + srcGlyph.x; 10444d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien float y = srcGlyph.y; 10454d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutGlyph glyph = {font_ix, glyph_id, x, y}; 10464d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mGlyphs.push_back(glyph); 10474d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 10484d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = 0; i < src->mAdvances.size(); i++) { 10494d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mAdvances[i + start] = src->mAdvances[i]; 1050acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka if (i == 0) 1051acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka mAdvances[i + start] += extraAdvance; 10524d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 10534d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinRect srcBounds(src->mBounds); 10544d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien srcBounds.offset(x0, 0); 10554d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mBounds.join(srcBounds); 1056acd401d02981af51419f4b740abb2c41e4980fdbSeigo Nonaka mAdvance += src->mAdvance + extraAdvance; 105756c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod 105856c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod if (fontMap != fontMapStack) { 105956c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod delete[] fontMap; 106056c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod } 10614d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 10624d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1063ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Leviensize_t Layout::nGlyphs() const { 1064ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return mGlyphs.size(); 1065ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 1066ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 1067dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonakaconst MinikinFont* Layout::getFont(int i) const { 1068ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 10699a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien return mFaces[glyph.font_ix].font; 10709a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien} 10719a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien 10729a5f713add8cfb91ac2c9ed5c917309053201ab6Raph LevienFontFakery Layout::getFakery(int i) const { 10739a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 10749a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien return mFaces[glyph.font_ix].fakery; 1075ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 1076ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 1077ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienunsigned int Layout::getGlyphId(int i) const { 1078ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 1079ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return glyph.glyph_id; 1080ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 1081ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 1082ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienfloat Layout::getX(int i) const { 1083ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 1084ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return glyph.x; 1085ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 1086ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 1087ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienfloat Layout::getY(int i) const { 1088ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 1089ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return glyph.y; 1090ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 1091ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 1092bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienfloat Layout::getAdvance() const { 1093bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien return mAdvance; 1094bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien} 1095bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 1096ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienvoid Layout::getAdvances(float* advances) { 1097ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien memcpy(advances, &mAdvances[0], mAdvances.size() * sizeof(float)); 1098ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 1099ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 1100dfbc6e374259f9d81940b5195ac013b02429af27Seigo Nonakavoid Layout::getBounds(MinikinRect* bounds) const { 1101ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien bounds->set(mBounds); 1102ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 1103ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 110422e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levienvoid Layout::purgeCaches() { 1105fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka android::AutoMutex _l(gMinikinLock); 1106fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka LayoutCache& layoutCache = LayoutEngine::getInstance().layoutCache; 1107fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka layoutCache.clear(); 110889e80237bc27af084c9ff316d4f47abf426eced8Seigo Nonaka purgeHbFontCacheLocked(); 110922e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien} 111022e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien 111114e2d136aaef271ba131f917cf5f27baa31ae5adSeigo Nonaka} // namespace minikin 1112fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka 1113fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka// Unable to define the static data member outside of android. 1114fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka// TODO: introduce our own Singleton to drop android namespace. 1115fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonakanamespace android { 1116fd4124c53399581dd94eac5a9749bc07b474a294Seigo NonakaANDROID_SINGLETON_STATIC_INSTANCE(minikin::LayoutEngine); 1117fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka} // namespace android 1118fd4124c53399581dd94eac5a9749bc07b474a294Seigo Nonaka 1119