Layout.cpp revision 6344de60fa37c4e4246cb37d82215564826c2b8b
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" 18ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien#include <cutils/log.h> 19ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 2069d4fba2f2b7bb2c248cc0e78cf277a6e44665f8Dan Albert#include <math.h> 2169d4fba2f2b7bb2c248cc0e78cf277a6e44665f8Dan Albert 22d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien#include <algorithm> 239cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <fstream> 249cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <iostream> // for debugging 2569d4fba2f2b7bb2c248cc0e78cf277a6e44665f8Dan Albert#include <string> 2669d4fba2f2b7bb2c248cc0e78cf277a6e44665f8Dan Albert#include <vector> 279cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 284d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/JenkinsHash.h> 294d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/LruCache.h> 304d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/Singleton.h> 314d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien#include <utils/String16.h> 324d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 33d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien#include <unicode/ubidi.h> 34ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien#include <hb-icu.h> 352a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka#include <hb-ot.h> 36ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 37198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka#include "FontLanguage.h" 386d9dcd2cf3d3ed26a886e02d94c907311e7b1f83Seigo Nonaka#include "FontLanguageListCache.h" 394e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka#include "LayoutUtils.h" 40fb0d396929e534a3686469b474d4f670864aa5acSeigo Nonaka#include "HbFaceCache.h" 41b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien#include "MinikinInternal.h" 42bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien#include <minikin/MinikinFontFreeType.h> 439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <minikin/Layout.h> 449cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 459cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienusing std::string; 469cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienusing std::vector; 479cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 488920e81717c6e51b92ff8f4479a1f959af260556John Recknamespace minikin { 498920e81717c6e51b92ff8f4479a1f959af260556John Reck 508920e81717c6e51b92ff8f4479a1f959af260556John ReckBitmap::Bitmap(int width, int height) : width(width), height(height) { 518920e81717c6e51b92ff8f4479a1f959af260556John Reck buf = new uint8_t[width * height](); 528920e81717c6e51b92ff8f4479a1f959af260556John Reck} 538920e81717c6e51b92ff8f4479a1f959af260556John Reck 548920e81717c6e51b92ff8f4479a1f959af260556John ReckBitmap::~Bitmap() { 558920e81717c6e51b92ff8f4479a1f959af260556John Reck delete[] buf; 568920e81717c6e51b92ff8f4479a1f959af260556John Reck} 578920e81717c6e51b92ff8f4479a1f959af260556John Reck 588920e81717c6e51b92ff8f4479a1f959af260556John Reckvoid Bitmap::writePnm(std::ofstream &o) const { 598920e81717c6e51b92ff8f4479a1f959af260556John Reck o << "P5" << std::endl; 608920e81717c6e51b92ff8f4479a1f959af260556John Reck o << width << " " << height << std::endl; 618920e81717c6e51b92ff8f4479a1f959af260556John Reck o << "255" << std::endl; 628920e81717c6e51b92ff8f4479a1f959af260556John Reck o.write((const char *)buf, width * height); 638920e81717c6e51b92ff8f4479a1f959af260556John Reck o.close(); 648920e81717c6e51b92ff8f4479a1f959af260556John Reck} 658920e81717c6e51b92ff8f4479a1f959af260556John Reck 668920e81717c6e51b92ff8f4479a1f959af260556John Reckvoid Bitmap::drawGlyph(const android::GlyphBitmap& bitmap, int x, int y) { 678920e81717c6e51b92ff8f4479a1f959af260556John Reck int bmw = bitmap.width; 688920e81717c6e51b92ff8f4479a1f959af260556John Reck int bmh = bitmap.height; 698920e81717c6e51b92ff8f4479a1f959af260556John Reck x += bitmap.left; 708920e81717c6e51b92ff8f4479a1f959af260556John Reck y -= bitmap.top; 718920e81717c6e51b92ff8f4479a1f959af260556John Reck int x0 = std::max(0, x); 728920e81717c6e51b92ff8f4479a1f959af260556John Reck int x1 = std::min(width, x + bmw); 738920e81717c6e51b92ff8f4479a1f959af260556John Reck int y0 = std::max(0, y); 748920e81717c6e51b92ff8f4479a1f959af260556John Reck int y1 = std::min(height, y + bmh); 758920e81717c6e51b92ff8f4479a1f959af260556John Reck const unsigned char* src = bitmap.buffer + (y0 - y) * bmw + (x0 - x); 768920e81717c6e51b92ff8f4479a1f959af260556John Reck uint8_t* dst = buf + y0 * width; 778920e81717c6e51b92ff8f4479a1f959af260556John Reck for (int yy = y0; yy < y1; yy++) { 788920e81717c6e51b92ff8f4479a1f959af260556John Reck for (int xx = x0; xx < x1; xx++) { 798920e81717c6e51b92ff8f4479a1f959af260556John Reck int pixel = (int)dst[xx] + (int)src[xx - x]; 808920e81717c6e51b92ff8f4479a1f959af260556John Reck pixel = pixel > 0xff ? 0xff : pixel; 818920e81717c6e51b92ff8f4479a1f959af260556John Reck dst[xx] = pixel; 828920e81717c6e51b92ff8f4479a1f959af260556John Reck } 838920e81717c6e51b92ff8f4479a1f959af260556John Reck src += bmw; 848920e81717c6e51b92ff8f4479a1f959af260556John Reck dst += width; 858920e81717c6e51b92ff8f4479a1f959af260556John Reck } 868920e81717c6e51b92ff8f4479a1f959af260556John Reck} 878920e81717c6e51b92ff8f4479a1f959af260556John Reck 888920e81717c6e51b92ff8f4479a1f959af260556John Reck} // namespace minikin 898920e81717c6e51b92ff8f4479a1f959af260556John Reck 909cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Leviennamespace android { 919cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 9286fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levienconst int kDirection_Mask = 0x1; 9386fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 94288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbodstruct LayoutContext { 95288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod MinikinPaint paint; 96288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod FontStyle style; 97288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod std::vector<hb_font_t*> hbFonts; // parallel to mFaces 98288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 99288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void clearHbFonts() { 100288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod for (size_t i = 0; i < hbFonts.size(); i++) { 101288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod hb_font_destroy(hbFonts[i]); 102288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 103288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod hbFonts.clear(); 104288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 105288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod}; 106288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 1074d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien// Layout cache datatypes 1084d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1094d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienclass LayoutCacheKey { 1104d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 1114d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCacheKey(const FontCollection* collection, const MinikinPaint& paint, FontStyle style, 1124d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien const uint16_t* chars, size_t start, size_t count, size_t nchars, bool dir) 113cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe : mChars(chars), mNchars(nchars), 114cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe mStart(start), mCount(count), mId(collection->getId()), mStyle(style), 115448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien mSize(paint.size), mScaleX(paint.scaleX), mSkewX(paint.skewX), 1168e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod mLetterSpacing(paint.letterSpacing), 1176c4d167bff33c24c239d77ddb1044b18d180766aRaph Levien mPaintFlags(paint.paintFlags), mHyphenEdit(paint.hyphenEdit), mIsRtl(dir) { 1184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1194d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool operator==(const LayoutCacheKey &other) const; 1204d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash_t hash() const; 1214d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 122288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void copyText() { 123288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod uint16_t* charsCopy = new uint16_t[mNchars]; 124288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod memcpy(charsCopy, mChars, mNchars * sizeof(uint16_t)); 125288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mChars = charsCopy; 126288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 127288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void freeText() { 128288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod delete[] mChars; 129288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mChars = NULL; 130288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 131288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 132288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void doLayout(Layout* layout, LayoutContext* ctx, const FontCollection* collection) const { 133288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layout->setFontCollection(collection); 134288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layout->mAdvances.resize(mCount, 0); 135288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod ctx->clearHbFonts(); 1360f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka collection->purgeFontFamilyHbFontCache(); 137288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layout->doLayoutRun(mChars, mStart, mCount, mNchars, mIsRtl, ctx); 138288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 139288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 1404d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienprivate: 141288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod const uint16_t* mChars; 142288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod size_t mNchars; 1434d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t mStart; 1444d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t mCount; 1454d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien uint32_t mId; // for the font collection 1464d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien FontStyle mStyle; 1474d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien float mSize; 148448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float mScaleX; 149448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float mSkewX; 1508e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod float mLetterSpacing; 151893399732b64203133c22ad3c1f3535e46bf35a7Raph Levien int32_t mPaintFlags; 1526c4d167bff33c24c239d77ddb1044b18d180766aRaph Levien HyphenEdit mHyphenEdit; 1534d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool mIsRtl; 1544d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // Note: any fields added to MinikinPaint must also be reflected here. 1554d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // TODO: language matching (possibly integrate into style) 1564d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 1574d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1584d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienclass LayoutCache : private OnEntryRemoved<LayoutCacheKey, Layout*> { 1594d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 1604d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCache() : mCache(kMaxEntries) { 1614d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mCache.setOnEntryRemovedListener(this); 1624d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1634d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 164288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod void clear() { 165288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mCache.clear(); 166288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 167288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 168288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod Layout* get(LayoutCacheKey& key, LayoutContext* ctx, const FontCollection* collection) { 169288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod Layout* layout = mCache.get(key); 170288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod if (layout == NULL) { 171288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod key.copyText(); 172288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layout = new Layout(); 173288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod key.doLayout(layout, ctx, collection); 174288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod mCache.put(key, layout); 175288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 176288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod return layout; 177288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } 178288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 179288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbodprivate: 1804d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // callback for OnEntryRemoved 1814d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien void operator()(LayoutCacheKey& key, Layout*& value) { 182288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod key.freeText(); 1834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien delete value; 1844d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 1854d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1864d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LruCache<LayoutCacheKey, Layout*> mCache; 187288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod 1884d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien //static const size_t kMaxEntries = LruCache<LayoutCacheKey, Layout*>::kUnlimitedCapacity; 1894d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1904d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // TODO: eviction based on memory footprint; for now, we just use a constant 1914d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // number of strings 1924d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien static const size_t kMaxEntries = 5000; 1934d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 1944d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 1950bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournaderstatic unsigned int disabledDecomposeCompatibility(hb_unicode_funcs_t*, hb_codepoint_t, 1960bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_codepoint_t*, void*) { 1970bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader return 0; 1980bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader} 1990bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader 2004d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienclass LayoutEngine : public Singleton<LayoutEngine> { 2014d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienpublic: 2024d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutEngine() { 2030bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader unicodeFunctions = hb_unicode_funcs_create(hb_icu_get_unicode_funcs()); 2040bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader /* Disable the function used for compatibility decomposition */ 2050bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_unicode_funcs_set_decompose_compatibility_func( 2060bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader unicodeFunctions, disabledDecomposeCompatibility, NULL, NULL); 2074d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hbBuffer = hb_buffer_create(); 2080bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_buffer_set_unicode_funcs(hbBuffer, unicodeFunctions); 2094d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 2104d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 2114d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_buffer_t* hbBuffer; 2120bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_unicode_funcs_t* unicodeFunctions; 2134d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCache layoutCache; 2144d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien}; 2154d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 2164d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph LevienANDROID_SINGLETON_STATIC_INSTANCE(LayoutEngine); 2174d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 2184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienbool LayoutCacheKey::operator==(const LayoutCacheKey& other) const { 219448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien return mId == other.mId 220448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mStart == other.mStart 221448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mCount == other.mCount 222448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mStyle == other.mStyle 223448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mSize == other.mSize 224448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mScaleX == other.mScaleX 225448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mSkewX == other.mSkewX 2268e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod && mLetterSpacing == other.mLetterSpacing 227448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mPaintFlags == other.mPaintFlags 2286c4d167bff33c24c239d77ddb1044b18d180766aRaph Levien && mHyphenEdit == other.mHyphenEdit 229448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien && mIsRtl == other.mIsRtl 230288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod && mNchars == other.mNchars 231288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod && !memcmp(mChars, other.mChars, mNchars * sizeof(uint16_t)); 2324d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 2334d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 2344d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienhash_t LayoutCacheKey::hash() const { 2354d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien uint32_t hash = JenkinsHashMix(0, mId); 2364d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, mStart); 2374d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, mCount); 2384d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, hash_type(mStyle)); 2394d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, hash_type(mSize)); 240448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hash = JenkinsHashMix(hash, hash_type(mScaleX)); 241448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hash = JenkinsHashMix(hash, hash_type(mSkewX)); 2428e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod hash = JenkinsHashMix(hash, hash_type(mLetterSpacing)); 243448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hash = JenkinsHashMix(hash, hash_type(mPaintFlags)); 2446c4d167bff33c24c239d77ddb1044b18d180766aRaph Levien hash = JenkinsHashMix(hash, hash_type(mHyphenEdit.hasHyphen())); 2454d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hash = JenkinsHashMix(hash, hash_type(mIsRtl)); 246288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod hash = JenkinsHashMixShorts(hash, mChars, mNchars); 2474d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return JenkinsHashWhiten(hash); 2484d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 2494d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 2504d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienhash_t hash_type(const LayoutCacheKey& key) { 2514d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien return key.hash(); 2524d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 2534d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 254ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienvoid MinikinRect::join(const MinikinRect& r) { 255ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (isEmpty()) { 256ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien set(r); 257ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else if (!r.isEmpty()) { 258ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mLeft = std::min(mLeft, r.mLeft); 259ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mTop = std::min(mTop, r.mTop); 260ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mRight = std::max(mRight, r.mRight); 261ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mBottom = std::max(mBottom, r.mBottom); 262ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 263ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 264ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 2656da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod// Deprecated. Remove when callers are removed. 2669cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienvoid Layout::init() { 2679cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2689cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2696da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbodvoid Layout::reset() { 2706da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mGlyphs.clear(); 2716da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mFaces.clear(); 2726da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mBounds.setEmpty(); 2736da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mAdvances.clear(); 2746da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod mAdvance = 0; 2756da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod} 2766da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod 2774d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::setFontCollection(const FontCollection* collection) { 2789cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien mCollection = collection; 2799cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2809cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 281bae347682989d2627081310129a5b60541ed6ad0Seigo Nonakastatic hb_position_t harfbuzzGetGlyphHorizontalAdvance(hb_font_t* /* hbFont */, void* fontData, 282bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka hb_codepoint_t glyph, void* /* userData */) { 2834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinPaint* paint = reinterpret_cast<MinikinPaint*>(fontData); 284bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien MinikinFont* font = paint->font; 285bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien float advance = font->GetHorizontalAdvance(glyph, *paint); 286bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien return 256 * advance + 0.5; 2879cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2889cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 289bae347682989d2627081310129a5b60541ed6ad0Seigo Nonakastatic hb_bool_t harfbuzzGetGlyphHorizontalOrigin(hb_font_t* /* hbFont */, void* /* fontData */, 290bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka hb_codepoint_t /* glyph */, hb_position_t* /* x */, hb_position_t* /* y */, 291bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka void* /* userData */) { 2929cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien // Just return true, following the way that Harfbuzz-FreeType 2939cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien // implementation does. 2949cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return true; 2959cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2969cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2979cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienhb_font_funcs_t* getHbFontFuncs() { 2989cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien static hb_font_funcs_t* hbFontFuncs = 0; 2999cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3009cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (hbFontFuncs == 0) { 3019cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hbFontFuncs = hb_font_funcs_create(); 3029cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hb_font_funcs_set_glyph_h_advance_func(hbFontFuncs, harfbuzzGetGlyphHorizontalAdvance, 0, 0); 3039cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hb_font_funcs_set_glyph_h_origin_func(hbFontFuncs, harfbuzzGetGlyphHorizontalOrigin, 0, 0); 3049cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien hb_font_funcs_make_immutable(hbFontFuncs); 3059cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3069cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return hbFontFuncs; 3079cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3089cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3094d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic hb_font_t* create_hb_font(MinikinFont* minikinFont, MinikinPaint* minikinPaint) { 310fb0d396929e534a3686469b474d4f670864aa5acSeigo Nonaka hb_face_t* face = getHbFaceLocked(minikinFont); 3112a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka hb_font_t* parent_font = hb_font_create(face); 3122a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka hb_ot_font_set_funcs(parent_font); 3132a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka 3142a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka unsigned int upem = hb_face_get_upem(face); 3152a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka hb_font_set_scale(parent_font, upem, upem); 3162a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka 3172a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka hb_font_t* font = hb_font_create_sub_font(parent_font); 3182a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka hb_font_destroy(parent_font); 3192a79f59e73294e43f32cc0138e23fcde34eec28aSeigo Nonaka 320bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien hb_font_set_funcs(font, getHbFontFuncs(), minikinPaint, 0); 3219cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return font; 3229cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3239cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3249cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienstatic float HBFixedToFloat(hb_position_t v) 3259cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien{ 3269cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return scalbnf (v, -8); 3279cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3289cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3299cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienstatic hb_position_t HBFloatToFixed(float v) 3309cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien{ 3319cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return scalbnf (v, +8); 3329cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3339cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3349cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienvoid Layout::dump() const { 3359cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (size_t i = 0; i < mGlyphs.size(); i++) { 3369cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien const LayoutGlyph& glyph = mGlyphs[i]; 3379cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien std::cout << glyph.glyph_id << ": " << glyph.x << ", " << glyph.y << std::endl; 3389cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3399cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3409cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 3419a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levienint Layout::findFace(FakedFont face, LayoutContext* ctx) { 3429cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien unsigned int ix; 3439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (ix = 0; ix < mFaces.size(); ix++) { 3449a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien if (mFaces[ix].font == face.font) { 3459cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return ix; 3469cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3479cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 3489cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien mFaces.push_back(face); 3494d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // Note: ctx == NULL means we're copying from the cache, no need to create 3504d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // corresponding hb_font object. 3514d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (ctx != NULL) { 3529a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien hb_font_t* font = create_hb_font(face.font, &ctx->paint); 3534d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien ctx->hbFonts.push_back(font); 3544d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 3559cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return ix; 3569cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 3579cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 358ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienstatic hb_script_t codePointToScript(hb_codepoint_t codepoint) { 3594d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien static hb_unicode_funcs_t* u = 0; 360ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (!u) { 3610bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader u = LayoutEngine::getInstance().unicodeFunctions; 362ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 363ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return hb_unicode_script(u, codepoint); 364ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 365ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 3664d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic hb_codepoint_t decodeUtf16(const uint16_t* chars, size_t len, ssize_t* iter) { 367ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const uint16_t v = chars[(*iter)++]; 368ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // test whether v in (0xd800..0xdfff), lead or trail surrogate 369ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if ((v & 0xf800) == 0xd800) { 370ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // test whether v in (0xd800..0xdbff), lead surrogate 371ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (size_t(*iter) < len && (v & 0xfc00) == 0xd800) { 372ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const uint16_t v2 = chars[(*iter)++]; 373ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // test whether v2 in (0xdc00..0xdfff), trail surrogate 374ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if ((v2 & 0xfc00) == 0xdc00) { 375ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien // (0xd800 0xdc00) in utf-16 maps to 0x10000 in ucs-32 376ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const hb_codepoint_t delta = (0xd800 << 10) + 0xdc00 - 0x10000; 377ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return (((hb_codepoint_t)v) << 10) + v2 - delta; 378ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 379b8208bc19c178b73175f76323381a1eeb8059807Behdad Esfahbod (*iter) -= 1; 380b8208bc19c178b73175f76323381a1eeb8059807Behdad Esfahbod return 0xFFFDu; 381ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else { 382b8208bc19c178b73175f76323381a1eeb8059807Behdad Esfahbod return 0xFFFDu; 383ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 384ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else { 385ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return v; 386ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 387ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 388ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 3894d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienstatic hb_script_t getScriptRun(const uint16_t* chars, size_t len, ssize_t* iter) { 390ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (size_t(*iter) == len) { 391ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return HB_SCRIPT_UNKNOWN; 392ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 393ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien uint32_t cp = decodeUtf16(chars, len, iter); 394ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_script_t current_script = codePointToScript(cp); 395ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien for (;;) { 396ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (size_t(*iter) == len) 397ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien break; 398ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const ssize_t prev_iter = *iter; 399ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien cp = decodeUtf16(chars, len, iter); 400ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const hb_script_t script = codePointToScript(cp); 401ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (script != current_script) { 402ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (current_script == HB_SCRIPT_INHERITED || 403ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien current_script == HB_SCRIPT_COMMON) { 404ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien current_script = script; 405ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else if (script == HB_SCRIPT_INHERITED || 406ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien script == HB_SCRIPT_COMMON) { 407ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien continue; 408ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } else { 409ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien *iter = prev_iter; 410ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien break; 411ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 412ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 413ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 414ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien if (current_script == HB_SCRIPT_INHERITED) { 415ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien current_script = HB_SCRIPT_COMMON; 416ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 417ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 418ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return current_script; 419ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 420ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 4214d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien/** 422e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien * Disable certain scripts (mostly those with cursive connection) from having letterspacing 423e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien * applied. See https://github.com/behdad/harfbuzz/issues/64 for more details. 424e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien */ 425e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levienstatic bool isScriptOkForLetterspacing(hb_script_t script) { 426e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien return !( 427e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_ARABIC || 428e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_NKO || 429e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_PSALTER_PAHLAVI || 430e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_MANDAIC || 431e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_MONGOLIAN || 432e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_PHAGS_PA || 433e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_DEVANAGARI || 434e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_BENGALI || 435e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_GURMUKHI || 436e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_MODI || 437e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_SHARADA || 438e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_SYLOTI_NAGRI || 439e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_TIRHUTA || 440e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien script == HB_SCRIPT_OGHAM 441e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien ); 442e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien} 443e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien 4446292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagiclass BidiText { 4456292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagipublic: 4466292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi class Iter { 4476292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi public: 4486292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi struct RunInfo { 4496292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi int32_t mRunStart; 4506292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi int32_t mRunLength; 4516292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool mIsRtl; 4526292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi }; 4536292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4546292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi Iter(UBiDi* bidi, size_t start, size_t end, size_t runIndex, size_t runCount, bool isRtl); 4556292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4566292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool operator!= (const Iter& other) const { 4576292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return mIsEnd != other.mIsEnd || mNextRunIndex != other.mNextRunIndex 4586292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi || mBidi != other.mBidi; 4596292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4606292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4616292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const RunInfo& operator* () const { 4626292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return mRunInfo; 4636292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4646292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4656292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const Iter& operator++ () { 4666292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi updateRunInfo(); 4676292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return *this; 4686292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4696292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4706292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi private: 4716292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi UBiDi* const mBidi; 4726292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool mIsEnd; 4736292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi size_t mNextRunIndex; 4746292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const size_t mRunCount; 4756292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const int32_t mStart; 4766292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const int32_t mEnd; 4776292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi RunInfo mRunInfo; 4786292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4796292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi void updateRunInfo(); 4806292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi }; 4816292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4826292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi BidiText(const uint16_t* buf, size_t start, size_t count, size_t bufSize, int bidiFlags); 4836292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4846292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ~BidiText() { 4856292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (mBidi) { 4866292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ubidi_close(mBidi); 4876292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4886292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4896292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4906292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi Iter begin () const { 4916292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return Iter(mBidi, mStart, mEnd, 0, mRunCount, mIsRtl); 4926292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4936292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4946292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi Iter end() const { 4956292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return Iter(mBidi, mStart, mEnd, mRunCount, mRunCount, mIsRtl); 4966292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 4976292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 4986292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagiprivate: 4996292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const size_t mStart; 5006292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const size_t mEnd; 5016292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const size_t mBufSize; 5026292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi UBiDi* mBidi; 5036292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi size_t mRunCount; 5046292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool mIsRtl; 5056292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 5066292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi DISALLOW_COPY_AND_ASSIGN(BidiText); 5076292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi}; 5086292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 5096292e1a966da86af7045c356fcad6ab8864089b8Keisuke KuroyanagiBidiText::Iter::Iter(UBiDi* bidi, size_t start, size_t end, size_t runIndex, size_t runCount, 5106292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bool isRtl) 5116292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi : mBidi(bidi), mIsEnd(runIndex == runCount), mNextRunIndex(runIndex), mRunCount(runCount), 5126292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mStart(start), mEnd(end), mRunInfo() { 5136292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (mRunCount == 1) { 5146292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mRunStart = start; 5156292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mRunLength = end - start; 5166292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mIsRtl = isRtl; 5176292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mNextRunIndex = mRunCount; 5186292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5196292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5206292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi updateRunInfo(); 5216292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi} 5226292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 5236292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagivoid BidiText::Iter::updateRunInfo() { 5246292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (mNextRunIndex == mRunCount) { 5256292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi // All runs have been iterated. 5266292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mIsEnd = true; 5276292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5286292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5296292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi int32_t startRun = -1; 5306292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi int32_t lengthRun = -1; 5316292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const UBiDiDirection runDir = ubidi_getVisualRun(mBidi, mNextRunIndex, &startRun, &lengthRun); 5326292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mNextRunIndex++; 5336292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (startRun == -1 || lengthRun == -1) { 5346292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ALOGE("invalid visual run"); 5356292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi // skip the invalid run. 5366292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi updateRunInfo(); 5376292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5386292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5396292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const int32_t runEnd = std::min(startRun + lengthRun, mEnd); 5406292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mRunStart = std::max(startRun, mStart); 5416292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mRunLength = runEnd - mRunInfo.mRunStart; 5426292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (mRunInfo.mRunLength <= 0) { 5436292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi // skip the empty run. 5446292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi updateRunInfo(); 5456292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5466292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5476292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunInfo.mIsRtl = (runDir == UBIDI_RTL); 5486292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi} 5496292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 5506292e1a966da86af7045c356fcad6ab8864089b8Keisuke KuroyanagiBidiText::BidiText(const uint16_t* buf, size_t start, size_t count, size_t bufSize, int bidiFlags) 5516292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi : mStart(start), mEnd(start + count), mBufSize(bufSize), mBidi(NULL), mRunCount(1), 5526292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mIsRtl((bidiFlags & kDirection_Mask) != 0) { 5536292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (bidiFlags == kBidi_Force_LTR || bidiFlags == kBidi_Force_RTL) { 5546292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi // force single run. 5556292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5566292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5576292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mBidi = ubidi_open(); 5586292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (!mBidi) { 5596292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ALOGE("error creating bidi object"); 5606292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5616292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5626292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi UErrorCode status = U_ZERO_ERROR; 5636292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi UBiDiLevel bidiReq = bidiFlags; 5646292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (bidiFlags == kBidi_Default_LTR) { 5656292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bidiReq = UBIDI_DEFAULT_LTR; 5666292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } else if (bidiFlags == kBidi_Default_RTL) { 5676292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi bidiReq = UBIDI_DEFAULT_RTL; 5686292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5696292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ubidi_setPara(mBidi, buf, mBufSize, bidiReq, NULL, &status); 5706292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (!U_SUCCESS(status)) { 5716292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ALOGE("error calling ubidi_setPara, status = %d", status); 5726292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5736292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5746292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const int paraDir = ubidi_getParaLevel(mBidi) & kDirection_Mask; 5756292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi const ssize_t rc = ubidi_countRuns(mBidi, &status); 5766292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (!U_SUCCESS(status) || rc < 0) { 5776292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi ALOGW("error counting bidi runs, status = %d", status); 5786292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5796292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi if (!U_SUCCESS(status) || rc <= 1) { 5806292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mIsRtl = (paraDir == kBidi_RTL); 5816292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi return; 5826292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi } 5836292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi mRunCount = rc; 5846292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi} 5856292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi 5864d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::doLayout(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 58709f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod int bidiFlags, const FontStyle &style, const MinikinPaint &paint) { 58809f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod AutoMutex _l(gMinikinLock); 58909f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod 59009f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod LayoutContext ctx; 59109f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod ctx.style = style; 59209f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod ctx.paint = paint; 59309f1901d6befcab49ed46cb77151a5d4af14a3b9Behdad Esfahbod 5946da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod reset(); 5954d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mAdvances.resize(count, 0); 5966da7796cbe8a17efd61a3302369e69bb222fdb4fBehdad Esfahbod 5976292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi for (const BidiText::Iter::RunInfo& runInfo : BidiText(buf, start, count, bufSize, bidiFlags)) { 5986292e1a966da86af7045c356fcad6ab8864089b8Keisuke Kuroyanagi doLayoutRunCached(buf, runInfo.mRunStart, runInfo.mRunLength, bufSize, runInfo.mIsRtl, &ctx, 5996344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi start, mCollection, this, NULL); 6004d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 601288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod ctx.clearHbFonts(); 6020f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka mCollection->purgeFontFamilyHbFontCache(); 6034d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 6044d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 6056344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagifloat Layout::measureText(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 6066344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi int bidiFlags, const FontStyle &style, const MinikinPaint &paint, 6076344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi const FontCollection* collection, float* advances) { 6086344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi AutoMutex _l(gMinikinLock); 6096344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi 6106344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi LayoutContext ctx; 6116344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi ctx.style = style; 6126344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi ctx.paint = paint; 6136344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi 6146344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi float advance = 0; 6156344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi for (const BidiText::Iter::RunInfo& runInfo : BidiText(buf, start, count, bufSize, bidiFlags)) { 6166344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi float* advancesForRun = advances ? advances + (runInfo.mRunStart - start) : advances; 6176344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advance += doLayoutRunCached(buf, runInfo.mRunStart, runInfo.mRunLength, bufSize, 6186344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi runInfo.mIsRtl, &ctx, 0, collection, NULL, advancesForRun); 6196344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 6206344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi 6216344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi ctx.clearHbFonts(); 6226344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi return advance; 6236344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi} 6246344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi 6256344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagifloat Layout::doLayoutRunCached(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 6266344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi bool isRtl, LayoutContext* ctx, size_t dstStart, const FontCollection* collection, 6276344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi Layout* layout, float* advances) { 628d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien HyphenEdit hyphen = ctx->paint.hyphenEdit; 6296344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi float advance = 0; 6304d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien if (!isRtl) { 6314d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // left to right 6324e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka size_t wordstart = 6334e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka start == bufSize ? start : getPrevWordBreakForCache(buf, start + 1, bufSize); 6344d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t wordend; 6354d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t iter = start; iter < start + count; iter = wordend) { 6364e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka wordend = getNextWordBreakForCache(buf, iter, bufSize); 637d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien // Only apply hyphen to the last word in the string. 638d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien ctx->paint.hyphenEdit = wordend >= start + count ? hyphen : HyphenEdit(); 6393f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien size_t wordcount = std::min(start + count, wordend) - iter; 6406344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advance += doLayoutWord(buf + wordstart, iter - wordstart, wordcount, 6416344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi wordend - wordstart, isRtl, ctx, iter - dstStart, collection, layout, 6426344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advances ? advances + (iter - start) : advances); 6434d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien wordstart = wordend; 6444d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 6454d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } else { 6464d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien // right to left 6474d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t wordstart; 6484d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien size_t end = start + count; 6494e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka size_t wordend = end == 0 ? 0 : getNextWordBreakForCache(buf, end - 1, bufSize); 6504d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t iter = end; iter > start; iter = wordstart) { 6514e3adc6fb2073d5b466b88b8f5329d281038aba1Seigo Nonaka wordstart = getPrevWordBreakForCache(buf, iter, bufSize); 652d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien // Only apply hyphen to the last (leftmost) word in the string. 653d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien ctx->paint.hyphenEdit = iter == end ? hyphen : HyphenEdit(); 6543f1ea5da2ee12b0d95c17c56928c3e553d4eeda0Raph Levien size_t bufStart = std::max(start, wordstart); 6556344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advance += doLayoutWord(buf + wordstart, bufStart - wordstart, iter - bufStart, 6566344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi wordend - wordstart, isRtl, ctx, bufStart - dstStart, collection, layout, 6576344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi advances ? advances + (bufStart - start) : advances); 6584d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien wordend = wordstart; 6594d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 66086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 6616344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi return advance; 66286fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien} 66386fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 6646344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagifloat Layout::doLayoutWord(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 6656344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi bool isRtl, LayoutContext* ctx, size_t bufStart, const FontCollection* collection, 6666344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi Layout* layout, float* advances) { 6674d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutCache& cache = LayoutEngine::getInstance().layoutCache; 6686344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi LayoutCacheKey key(collection, ctx->paint, ctx->style, buf, start, count, bufSize, isRtl); 6695986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod bool skipCache = ctx->paint.skipCache(); 670288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod if (skipCache) { 6716344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi Layout layoutForWord; 6726344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi key.doLayout(&layoutForWord, ctx, collection); 6736344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi if (layout) { 6746344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi layout->appendLayout(&layoutForWord, bufStart); 6756344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 6766344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi if (advances) { 6776344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi layoutForWord.getAdvances(advances); 6786344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 6796344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi return layoutForWord.getAdvance(); 680288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod } else { 6816344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi Layout* layoutForWord = cache.get(key, ctx, collection); 6826344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi if (layout) { 6836344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi layout->appendLayout(layoutForWord, bufStart); 6846344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 6856344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi if (advances) { 6866344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi layoutForWord->getAdvances(advances); 6876344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi } 6886344de60fa37c4e4246cb37d82215564826c2b8bKeisuke Kuroyanagi return layoutForWord->getAdvance(); 6894d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 6904d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 6914d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 6925986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbodstatic void addFeatures(const string &str, vector<hb_feature_t>* features) { 6935986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod if (!str.size()) 6945986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod return; 69567ea671fe421d0e4642caef619ec39ec86bdcaefRaph Levien 6965986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod const char* start = str.c_str(); 6975986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod const char* end = start + str.size(); 6985986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod 6995986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod while (start < end) { 7005986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod static hb_feature_t feature; 7015986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod const char* p = strchr(start, ','); 7025986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod if (!p) 7035986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod p = end; 7045986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod /* We do not allow setting features on ranges. As such, reject any 7055986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod * setting that has non-universal range. */ 7065986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod if (hb_feature_from_string (start, p - start, &feature) 7075986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod && feature.start == 0 && feature.end == (unsigned int) -1) 7085986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod features->push_back(feature); 7095986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod start = p + 1; 7105986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod } 7114043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien} 7124043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien 71386fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levienvoid Layout::doLayoutRun(const uint16_t* buf, size_t start, size_t count, size_t bufSize, 7144d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien bool isRtl, LayoutContext* ctx) { 7154d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_buffer_t* buffer = LayoutEngine::getInstance().hbBuffer; 71686fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien vector<FontCollection::Run> items; 7174d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mCollection->itemize(buf + start, count, ctx->style, &items); 71886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien if (isRtl) { 71986fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien std::reverse(items.begin(), items.end()); 72086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien } 72186fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien 7224043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien vector<hb_feature_t> features; 7238e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // Disable default-on non-required ligature features if letter-spacing 7248e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // See http://dev.w3.org/csswg/css-text-3/#letter-spacing-property 7258e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // "When the effective spacing between two characters is not zero (due to 7268e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // either justification or a non-zero value of letter-spacing), user agents 7278e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod // should not apply optional ligatures." 7288e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (fabs(ctx->paint.letterSpacing) > 0.03) 7298e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod { 7308e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod static const hb_feature_t no_liga = { HB_TAG('l', 'i', 'g', 'a'), 0, 0, ~0u }; 7318e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod static const hb_feature_t no_clig = { HB_TAG('c', 'l', 'i', 'g'), 0, 0, ~0u }; 7328e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod features.push_back(no_liga); 7338e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod features.push_back(no_clig); 7348e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 7355986f6048ae21e0ec094c1f2ca0169d0ca6ec6b5Behdad Esfahbod addFeatures(ctx->paint.fontFeatureSettings, &features); 7364043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien 7378e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod double size = ctx->paint.size; 7388e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod double scaleX = ctx->paint.scaleX; 7398e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod 74086fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien float x = mAdvance; 7419cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien float y = 0; 7429cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (size_t run_ix = 0; run_ix < items.size(); run_ix++) { 7439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien FontCollection::Run &run = items[run_ix]; 7449a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien if (run.fakedFont.font == NULL) { 7457c382381191b2280b53c375fe83dfc6217bbdfa9Raph Levien ALOGE("no font for run starting u+%04x length %d", buf[run.start], run.end - run.start); 7467c382381191b2280b53c375fe83dfc6217bbdfa9Raph Levien continue; 7477c382381191b2280b53c375fe83dfc6217bbdfa9Raph Levien } 7489a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien int font_ix = findFace(run.fakedFont, ctx); 7499a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien ctx->paint.font = mFaces[font_ix].font; 7509a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien ctx->paint.fakery = mFaces[font_ix].fakery; 7514d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_font_t* hbFont = ctx->hbFonts[font_ix]; 7522967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader#ifdef VERBOSE_DEBUG 753bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka ALOGD("Run %zu, font %d [%d:%d]", run_ix, font_ix, run.start, run.end); 7549cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#endif 7558e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod 756448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hb_font_set_ppem(hbFont, size * scaleX, size); 757448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien hb_font_set_scale(hbFont, HBFloatToFixed(size * scaleX), HBFloatToFixed(size)); 7589cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 759d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien // TODO: if there are multiple scripts within a font in an RTL run, 760d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien // we need to reorder those runs. This is unlikely with our current 761d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien // font stack, but should be done for correctness. 7620a689bb956183beebe7d59fccb226a82680f265aRaph Levien ssize_t srunend; 7630a689bb956183beebe7d59fccb226a82680f265aRaph Levien for (ssize_t srunstart = run.start; srunstart < run.end; srunstart = srunend) { 764ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien srunend = srunstart; 76586fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien hb_script_t script = getScriptRun(buf + start, run.end, &srunend); 766ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 767e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien double letterSpace = 0.0; 768e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien double letterSpaceHalfLeft = 0.0; 769e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien double letterSpaceHalfRight = 0.0; 770e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien 771e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien if (ctx->paint.letterSpacing != 0.0 && isScriptOkForLetterspacing(script)) { 772e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpace = ctx->paint.letterSpacing * size * scaleX; 773e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien if ((ctx->paint.paintFlags & LinearTextFlag) == 0) { 774e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpace = round(letterSpace); 775e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpaceHalfLeft = floor(letterSpace * 0.5); 776e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien } else { 777e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpaceHalfLeft = letterSpace * 0.5; 778e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien } 779e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien letterSpaceHalfRight = letterSpace - letterSpaceHalfLeft; 780e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien } 781e8721b2d293ba1a0e5d92a066aa9aa15807357ccRaph Levien 7820bbff3a96d3836079371cdd4398c21afad3c5234Roozbeh Pournader hb_buffer_clear_contents(buffer); 783ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_buffer_set_script(buffer, script); 784d231a4b0b1d482c7ae7717b048112e1fe5d0f5a9Raph Levien hb_buffer_set_direction(buffer, isRtl? HB_DIRECTION_RTL : HB_DIRECTION_LTR); 7856d9dcd2cf3d3ed26a886e02d94c907311e7b1f83Seigo Nonaka const FontLanguages& langList = 7866d9dcd2cf3d3ed26a886e02d94c907311e7b1f83Seigo Nonaka FontLanguageListCache::getById(ctx->style.getLanguageListId()); 7876d9dcd2cf3d3ed26a886e02d94c907311e7b1f83Seigo Nonaka if (langList.size() != 0) { 788198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka const FontLanguage* hbLanguage = &langList[0]; 789198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka for (size_t i = 0; i < langList.size(); ++i) { 790198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka if (langList[i].supportsHbScript(script)) { 791198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka hbLanguage = &langList[i]; 792198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka break; 793198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka } 794198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka } 795198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka hb_buffer_set_language(buffer, 796198b46f1fea3f47ef8eb6317799c0d77aaec52f6Seigo Nonaka hb_language_from_string(hbLanguage->getString().c_str(), -1)); 7977b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 79886fa46c5ebb0d2c3319e08f4fbf487d8c2abbbfcRaph Levien hb_buffer_add_utf16(buffer, buf, bufSize, srunstart + start, srunend - srunstart); 799d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien if (ctx->paint.hyphenEdit.hasHyphen() && srunend > srunstart) { 800d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien // TODO: check whether this is really the desired semantics. It could have the 801d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien // effect of assigning the hyphen width to a nonspacing mark 80291425f0564581e258d3f9b2f44d13f3b6d7a60eaRaph Levien unsigned int lastCluster = start + srunend - 1; 803f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader 804f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader hb_codepoint_t hyphenChar = 0x2010; // HYPHEN 805f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader hb_codepoint_t glyph; 806f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader // Fallback to ASCII HYPHEN-MINUS if the font didn't have a glyph for HYPHEN. Note 807f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader // that we intentionally don't do anything special if the font doesn't have a 808f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader // HYPHEN-MINUS either, so a tofu could be shown, hinting towards something 809f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader // missing. 810f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader if (!hb_font_get_glyph(hbFont, hyphenChar, 0, &glyph)) { 811f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader hyphenChar = 0x002D; // HYPHEN-MINUS 812f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader } 813f997dd21968bac16966269aede235247fb08a00bRoozbeh Pournader hb_buffer_add(buffer, hyphenChar, lastCluster); 814d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien } 8154043f6f6d9c584bc61bc3d81d1680bf1b558330eRaph Levien hb_shape(hbFont, buffer, features.empty() ? NULL : &features[0], features.size()); 816ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien unsigned int numGlyphs; 8174d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_glyph_info_t* info = hb_buffer_get_glyph_infos(buffer, &numGlyphs); 8184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien hb_glyph_position_t* positions = hb_buffer_get_glyph_positions(buffer, NULL); 8198e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (numGlyphs) 8208e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod { 8216740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien mAdvances[info[0].cluster - start] += letterSpaceHalfLeft; 8226740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien x += letterSpaceHalfLeft; 8238e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 824ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien for (unsigned int i = 0; i < numGlyphs; i++) { 8252967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader#ifdef VERBOSE_DEBUG 8262967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader ALOGD("%d %d %d %d", 8272967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader positions[i].x_advance, positions[i].y_advance, 8282967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader positions[i].x_offset, positions[i].y_offset); 8292967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader ALOGD("DoLayout %u: %f; %d, %d", 8302967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader info[i].codepoint, HBFixedToFloat(positions[i].x_advance), 8312967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader positions[i].x_offset, positions[i].y_offset); 8322967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader#endif 8338e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (i > 0 && info[i - 1].cluster != info[i].cluster) { 8346740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien mAdvances[info[i - 1].cluster - start] += letterSpaceHalfRight; 8356740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien mAdvances[info[i].cluster - start] += letterSpaceHalfLeft; 8366740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien x += letterSpace; 8378e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 8388e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod 839ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien hb_codepoint_t glyph_ix = info[i].codepoint; 840ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien float xoff = HBFixedToFloat(positions[i].x_offset); 841448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien float yoff = -HBFixedToFloat(positions[i].y_offset); 842448b0fd720d7ba902b9be224a287d08abe3ebea8Raph Levien xoff += yoff * ctx->paint.skewX; 843ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien LayoutGlyph glyph = {font_ix, glyph_ix, x + xoff, y + yoff}; 844ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mGlyphs.push_back(glyph); 845ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien float xAdvance = HBFixedToFloat(positions[i].x_advance); 8466740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien if ((ctx->paint.paintFlags & LinearTextFlag) == 0) { 8476740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien xAdvance = roundf(xAdvance); 8486740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien } 849ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien MinikinRect glyphBounds; 8504d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien ctx->paint.font->GetBounds(&glyphBounds, glyph_ix, ctx->paint); 851ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien glyphBounds.offset(x + xoff, y + yoff); 852ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien mBounds.join(glyphBounds); 853d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien if (info[i].cluster - start < count) { 854d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien mAdvances[info[i].cluster - start] += xAdvance; 855d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien } else { 856bae347682989d2627081310129a5b60541ed6ad0Seigo Nonaka ALOGE("cluster %zu (start %zu) out of bounds of count %zu", 857d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien info[i].cluster - start, start, count); 858d692d6a9791145d41d7778cdf6b40b20c2be8cb4Raph Levien } 859ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien x += xAdvance; 860ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien } 8618e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod if (numGlyphs) 8628e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod { 8636740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien mAdvances[info[numGlyphs - 1].cluster - start] += letterSpaceHalfRight; 8646740536e3927d25bf5c2567e5f6e8c175973cbb7Raph Levien x += letterSpaceHalfRight; 8658e7a3dae37e9a22b2c054aec852615843d71caf6Behdad Esfahbod } 8669cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 8679cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 868bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien mAdvance = x; 8699cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 8709cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 8714d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levienvoid Layout::appendLayout(Layout* src, size_t start) { 87256c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod int fontMapStack[16]; 87356c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod int* fontMap; 87456c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod if (src->mFaces.size() < sizeof(fontMapStack) / sizeof(fontMapStack[0])) { 87556c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod fontMap = fontMapStack; 87656c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod } else { 87756c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod fontMap = new int[src->mFaces.size()]; 87856c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod } 8794d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = 0; i < src->mFaces.size(); i++) { 8804d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int font_ix = findFace(src->mFaces[i], NULL); 88156c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod fontMap[i] = font_ix; 8824d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 8834d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int x0 = mAdvance; 8844d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = 0; i < src->mGlyphs.size(); i++) { 8854d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutGlyph& srcGlyph = src->mGlyphs[i]; 8864d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien int font_ix = fontMap[srcGlyph.font_ix]; 8874d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien unsigned int glyph_id = srcGlyph.glyph_id; 8884d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien float x = x0 + srcGlyph.x; 8894d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien float y = srcGlyph.y; 8904d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien LayoutGlyph glyph = {font_ix, glyph_id, x, y}; 8914d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mGlyphs.push_back(glyph); 8924d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 8934d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien for (size_t i = 0; i < src->mAdvances.size(); i++) { 8944d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mAdvances[i + start] = src->mAdvances[i]; 8954d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien } 8964d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinRect srcBounds(src->mBounds); 8974d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien srcBounds.offset(x0, 0); 8984d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mBounds.join(srcBounds); 8994d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien mAdvance += src->mAdvance; 90056c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod 90156c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod if (fontMap != fontMapStack) { 90256c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod delete[] fontMap; 90356c7fb8c0633f1b02115bb4370854016f8c84fb4Behdad Esfahbod } 9044d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien} 9054d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien 9068920e81717c6e51b92ff8f4479a1f959af260556John Reckvoid Layout::draw(minikin::Bitmap* surface, int x0, int y0, float size) const { 907bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien /* 908bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien TODO: redo as MinikinPaint settings 9099cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (mProps.hasTag(minikinHinting)) { 9109cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int hintflags = mProps.value(minikinHinting).getIntValue(); 9119cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (hintflags & 1) load_flags |= FT_LOAD_NO_HINTING; 9129cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (hintflags & 2) load_flags |= FT_LOAD_NO_AUTOHINT; 9139cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 914bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien */ 9159cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (size_t i = 0; i < mGlyphs.size(); i++) { 9169cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien const LayoutGlyph& glyph = mGlyphs[i]; 9179a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien MinikinFont* mf = mFaces[glyph.font_ix].font; 9184d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien MinikinFontFreeType* face = static_cast<MinikinFontFreeType*>(mf); 919bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien GlyphBitmap glyphBitmap; 920bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien MinikinPaint paint; 9214d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph Levien paint.size = size; 922bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien bool ok = face->Render(glyph.glyph_id, paint, &glyphBitmap); 9232967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader#ifdef VERBOSE_DEBUG 9242967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader ALOGD("glyphBitmap.width=%d, glyphBitmap.height=%d (%d, %d) x=%f, y=%f, ok=%d", 925bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien glyphBitmap.width, glyphBitmap.height, glyphBitmap.left, glyphBitmap.top, glyph.x, glyph.y, ok); 9262967a13420ffd1d426e6edd1648414910593d179Roozbeh Pournader#endif 927bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien if (ok) { 928bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien surface->drawGlyph(glyphBitmap, 929bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien x0 + int(floor(glyph.x + 0.5)), y0 + int(floor(glyph.y + 0.5))); 930bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien } 9319cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 9329cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 9339cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 934ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Leviensize_t Layout::nGlyphs() const { 935ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return mGlyphs.size(); 936ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 937ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 9384d4e6bc8118d15542f1f2a9218f0f7a91a29474fRaph LevienMinikinFont* Layout::getFont(int i) const { 939ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 9409a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien return mFaces[glyph.font_ix].font; 9419a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien} 9429a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien 9439a5f713add8cfb91ac2c9ed5c917309053201ab6Raph LevienFontFakery Layout::getFakery(int i) const { 9449a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 9459a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien return mFaces[glyph.font_ix].fakery; 946ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 947ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 948ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienunsigned int Layout::getGlyphId(int i) const { 949ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 950ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return glyph.glyph_id; 951ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 952ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 953ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienfloat Layout::getX(int i) const { 954ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 955ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return glyph.x; 956ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 957ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 958ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienfloat Layout::getY(int i) const { 959ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien const LayoutGlyph& glyph = mGlyphs[i]; 960ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien return glyph.y; 961ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 962ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 963bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienfloat Layout::getAdvance() const { 964bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien return mAdvance; 965bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien} 966bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien 967ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienvoid Layout::getAdvances(float* advances) { 968ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien memcpy(advances, &mAdvances[0], mAdvances.size() * sizeof(float)); 969ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 970ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 971ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levienvoid Layout::getBounds(MinikinRect* bounds) { 972ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien bounds->set(mBounds); 973ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien} 974ecc2d34ac23a497988f21e5f415b53c007b9d8c5Raph Levien 97522e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levienvoid Layout::purgeCaches() { 97622e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien AutoMutex _l(gMinikinLock); 97722e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien LayoutCache& layoutCache = LayoutEngine::getInstance().layoutCache; 978288c915963b3500c7efb958ba613650e2ecdfdfaBehdad Esfahbod layoutCache.clear(); 979fb0d396929e534a3686469b474d4f670864aa5acSeigo Nonaka purgeHbFaceCacheLocked(); 98022e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien} 98122e41754f6470ff1f4c0e0a56d01f7f555b59e21Raph Levien 9829cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} // namespace android 983