FontFamily.cpp revision 0f2a025d135f9ca52cc3cf917fffc29d6c126094
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 179cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#define LOG_TAG "Minikin" 189cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 199cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <cutils/log.h> 209cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <stdlib.h> 219cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <stdint.h> 22c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien 230f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka#include <hb.h> 240f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka#include <hb-ot.h> 250f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka 260f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka#include "HbFaceCache.h" 27c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien#include "MinikinInternal.h" 28bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien#include <minikin/MinikinFont.h> 299cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <minikin/AnalyzeStyle.h> 3013f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien#include <minikin/CmapCoverage.h> 319cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien#include <minikin/FontFamily.h> 321279a3bf5ec6131efefbc51d52d24850fd81f676Kenny Root#include <UniquePtr.h> 339cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 349cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levienusing std::vector; 359cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 369cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Leviennamespace android { 379cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 387b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien// Parse bcp-47 language identifier into internal structure 397b221d97b7b64dc5ce457e19666d55d042e22e62Raph LevienFontLanguage::FontLanguage(const char* buf, size_t size) { 407b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien uint32_t bits = 0; 417b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien size_t i; 42a5bb91190edbea0be0e78a8511b3c920b6e99c4eBehdad Esfahbod for (i = 0; i < size; i++) { 437b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien uint16_t c = buf[i]; 447b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien if (c == '-' || c == '_') break; 457b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 467b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien if (i == 2) { 4771ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader bits = uint8_t(buf[0]) | (uint8_t(buf[1]) << 8); 4871ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader } else if (i == 3) { 4971ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader bits = uint8_t(buf[0]) | (uint8_t(buf[1]) << 8) | (uint8_t(buf[2]) << 16); 5071ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader } else { 5171ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader mBits = kUnsupportedLanguage; 5271ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader // We don't understand anything other than two-letter or three-letter 5371ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader // language codes, so we skip parsing the rest of the string. 5471ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader return; 557b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 567b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien size_t next; 577b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien for (i++; i < size; i = next + 1) { 587b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien for (next = i; next < size; next++) { 597b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien uint16_t c = buf[next]; 607b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien if (c == '-' || c == '_') break; 617b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 627b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien if (next - i == 4 && buf[i] == 'H' && buf[i+1] == 'a' && buf[i+2] == 'n') { 637b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien if (buf[i+3] == 's') { 647b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien bits |= kHansFlag; 657b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } else if (buf[i+3] == 't') { 667b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien bits |= kHantFlag; 677b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 687b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 697b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien // TODO: this might be a good place to infer script from country (zh_TW -> Hant), 707b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien // but perhaps it's up to the client to do that, before passing a string. 717b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 727b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien mBits = bits; 737b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien} 747b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien 75a5bb91190edbea0be0e78a8511b3c920b6e99c4eBehdad Esfahbodstd::string FontLanguage::getString() const { 7671ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader if (mBits == kUnsupportedLanguage) { 7771ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader return "und"; 7871ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader } 7971ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader char buf[16]; 8071ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader size_t i = 0; 8171ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader if (mBits & kBaseLangMask) { 8271ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = mBits & 0xFFu; 8371ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = (mBits >> 8) & 0xFFu; 8471ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader char third_letter = (mBits >> 16) & 0xFFu; 8571ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader if (third_letter != 0) buf[i++] = third_letter; 8671ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader } 8771ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader if (mBits & kScriptMask) { 8871ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader if (!i) { 8971ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader // This should not happen, but as it apparently has, we fill the language code part 9071ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader // with "und". 9171ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = 'u'; 9271ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = 'n'; 9371ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = 'd'; 9471ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader } 9571ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = '-'; 9671ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = 'H'; 9771ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = 'a'; 9871ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = 'n'; 9971ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader buf[i++] = (mBits & kHansFlag) ? 's' : 't'; 10071ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader } 10171ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader return std::string(buf, i); 102a5bb91190edbea0be0e78a8511b3c920b6e99c4eBehdad Esfahbod} 103a5bb91190edbea0be0e78a8511b3c920b6e99c4eBehdad Esfahbod 1047b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levienint FontLanguage::match(const FontLanguage other) const { 10571ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader if (mBits == kUnsupportedLanguage || other.mBits == kUnsupportedLanguage) 10671ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader return 0; 10771ec97055357b6ccb13a2697a56254bb19f43ae9Roozbeh Pournader 1087b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien int result = 0; 1097b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien if ((mBits & kBaseLangMask) == (other.mBits & kBaseLangMask)) { 1107b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien result++; 1117b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien if ((mBits & kScriptMask) != 0 && (mBits & kScriptMask) == (other.mBits & kScriptMask)) { 1127b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien result++; 1137b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 1147b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien } 1157b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien return result; 1167b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien} 1177b221d97b7b64dc5ce457e19666d55d042e22e62Raph Levien 118b80c1f19c58b927820a8a24bf2218e5645724608Raph LevienFontFamily::~FontFamily() { 119b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien for (size_t i = 0; i < mFonts.size(); i++) { 120b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien mFonts[i].typeface->UnrefLocked(); 121b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien } 122b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien} 123b80c1f19c58b927820a8a24bf2218e5645724608Raph Levien 124bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienbool FontFamily::addFont(MinikinFont* typeface) { 125c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien AutoMutex _l(gMinikinLock); 126bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien const uint32_t os2Tag = MinikinFont::MakeTag('O', 'S', '/', '2'); 127bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien size_t os2Size = 0; 128bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien bool ok = typeface->GetTable(os2Tag, NULL, &os2Size); 129bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien if (!ok) return false; 1309cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien UniquePtr<uint8_t[]> os2Data(new uint8_t[os2Size]); 131bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien ok = typeface->GetTable(os2Tag, os2Data.get(), &os2Size); 132bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levien if (!ok) return false; 1339cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int weight; 1349cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien bool italic; 1359cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (analyzeStyle(os2Data.get(), os2Size, &weight, &italic)) { 1369cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien //ALOGD("analyzed weight = %d, italic = %s", weight, italic ? "true" : "false"); 1379cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien FontStyle style(weight, italic); 138c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien addFontLocked(typeface, style); 1399cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return true; 1409cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } else { 1419cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien ALOGD("failed to analyze style"); 1429cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 1439cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return false; 1449cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 1459cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 146bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph Levienvoid FontFamily::addFont(MinikinFont* typeface, FontStyle style) { 147c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien AutoMutex _l(gMinikinLock); 148c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien addFontLocked(typeface, style); 149c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien} 150c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levien 151c31e3883456e018d742e9f29815ba5ff8b315ea1Raph Levienvoid FontFamily::addFontLocked(MinikinFont* typeface, FontStyle style) { typeface->RefLocked(); 1529cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien mFonts.push_back(Font(typeface, style)); 15313f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien mCoverageValid = false; 1549cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 1559cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 1569cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien// Compute a matching metric between two styles - 0 is an exact match 1579a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levienstatic int computeMatch(FontStyle style1, FontStyle style2) { 1589cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (style1 == style2) return 0; 1599cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int score = abs(style1.getWeight() - style2.getWeight()); 1609cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (style1.getItalic() != style2.getItalic()) { 1619cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien score += 2; 1629cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 1639cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return score; 1649cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 1659cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 1669a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levienstatic FontFakery computeFakery(FontStyle wanted, FontStyle actual) { 167d5804e3937a961736e5cef0e8a70eacf91ee00bbRaph Levien // If desired weight is semibold or darker, and 2 or more grades 168d5804e3937a961736e5cef0e8a70eacf91ee00bbRaph Levien // higher than actual (for example, medium 500 -> bold 700), then 169d5804e3937a961736e5cef0e8a70eacf91ee00bbRaph Levien // select fake bold. 1709f9f3b1ef40f7358dca6acd9dfef686cedefb6aaRaph Levien int wantedWeight = wanted.getWeight(); 171d5804e3937a961736e5cef0e8a70eacf91ee00bbRaph Levien bool isFakeBold = wantedWeight >= 6 && (wantedWeight - actual.getWeight()) >= 2; 1729a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien bool isFakeItalic = wanted.getItalic() && !actual.getItalic(); 1739a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien return FontFakery(isFakeBold, isFakeItalic); 1749a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien} 1759a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien 1769a5f713add8cfb91ac2c9ed5c917309053201ab6Raph LevienFakedFont FontFamily::getClosestMatch(FontStyle style) const { 1779cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien const Font* bestFont = NULL; 1789cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int bestMatch = 0; 1799cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien for (size_t i = 0; i < mFonts.size(); i++) { 1809cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien const Font& font = mFonts[i]; 1819cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien int match = computeMatch(font.style, style); 1829cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien if (i == 0 || match < bestMatch) { 1839cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien bestFont = &font; 1849cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien bestMatch = match; 1859cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 1869cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien } 1879a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien FakedFont result; 1889a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien if (bestFont == NULL) { 1899a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien result.font = NULL; 1909a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien } else { 1919a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien result.font = bestFont->typeface; 1929a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien result.fakery = computeFakery(style, bestFont->style); 1939a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien } 1949a5f713add8cfb91ac2c9ed5c917309053201ab6Raph Levien return result; 1959cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 1969cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 1979cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Leviensize_t FontFamily::getNumFonts() const { 1989cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return mFonts.size(); 1999cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2009cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 201bcc3dc5a2591a95a57e379e27cbad69c18e91e67Raph LevienMinikinFont* FontFamily::getFont(size_t index) const { 2029cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return mFonts[index].typeface; 2039cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2049cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 2059cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph LevienFontStyle FontFamily::getStyle(size_t index) const { 2069cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien return mFonts[index].style; 2079cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} 2089cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien 20913f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levienconst SparseBitSet* FontFamily::getCoverage() { 21013f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien if (!mCoverageValid) { 21113f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien const FontStyle defaultStyle; 21213f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien MinikinFont* typeface = getClosestMatch(defaultStyle).font; 21313f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien const uint32_t cmapTag = MinikinFont::MakeTag('c', 'm', 'a', 'p'); 21413f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien size_t cmapSize = 0; 215cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe if (!typeface->GetTable(cmapTag, NULL, &cmapSize)) { 216cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe ALOGE("Could not get cmap table size!\n"); 217cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe // Note: This means we will retry on the next call to getCoverage, as we can't store 218cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe // the failure. This is fine, as we assume this doesn't really happen in practice. 219cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe return nullptr; 220cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe } 22113f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien UniquePtr<uint8_t[]> cmapData(new uint8_t[cmapSize]); 222cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe if (!typeface->GetTable(cmapTag, cmapData.get(), &cmapSize)) { 223cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe ALOGE("Unexpected failure to read cmap table!\n"); 224cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe return nullptr; 225cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe } 226cb20a2f0b366bfc16db3a489a60156dec7a9fe21Andreas Gampe CmapCoverage::getCoverage(mCoverage, cmapData.get(), cmapSize); // TODO: Error check? 22713f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien#ifdef VERBOSE_DEBUG 22813f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien ALOGD("font coverage length=%d, first ch=%x\n", mCoverage->length(), 22913f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien mCoverage->nextSetBit(0)); 23013f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien#endif 23113f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien mCoverageValid = true; 23213f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien } 23313f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien return &mCoverage; 23413f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien} 23513f1aae02bacd475722bc8ea3fc2cf6abc1a82e3Raph Levien 2360f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonakabool FontFamily::hasVariationSelector(uint32_t codepoint, uint32_t variationSelector) { 2370f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka assertMinikinLocked(); 2380f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka if (!mHbFont) { 2390f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka const FontStyle defaultStyle; 2400f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka MinikinFont* minikinFont = getClosestMatch(defaultStyle).font; 2410f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka hb_face_t* face = getHbFaceLocked(minikinFont); 2420f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka mHbFont = hb_font_create(face); 2430f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka hb_ot_font_set_funcs(mHbFont); 2440f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka } 2450f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka uint32_t unusedGlyph; 2460f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka return hb_font_get_glyph(mHbFont, codepoint, variationSelector, &unusedGlyph); 2470f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka} 2480f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka 2490f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonakavoid FontFamily::purgeHbFontCache() { 2500f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka assertMinikinLocked(); 2510f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka if (mHbFont) { 2520f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka hb_font_destroy(mHbFont); 2530f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka mHbFont = nullptr; 2540f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka } 2550f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka} 2560f2a025d135f9ca52cc3cf917fffc29d6c126094Seigo Nonaka 2579cc9bbe1461f359f0b27c5e7645c17dda001ab1dRaph Levien} // namespace android 258