| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #include "qfontenginemultifontconfig_p.h" |
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| 5 | |
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| 6 | #include <QtGui/private/qfontengine_ft_p.h> |
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| 7 | |
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| 8 | QT_BEGIN_NAMESPACE |
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| 9 | |
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| 10 | QFontEngineMultiFontConfig::QFontEngineMultiFontConfig(QFontEngine *fe, int script) |
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| 11 | : QFontEngineMulti(fe, script) |
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| 12 | { |
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| 13 | } |
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| 14 | |
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| 15 | QFontEngineMultiFontConfig::~QFontEngineMultiFontConfig() |
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| 16 | { |
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| 17 | for (FcPattern *pattern : std::as_const(t&: cachedMatchPatterns)) { |
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| 18 | if (pattern) |
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| 19 | FcPatternDestroy(p: pattern); |
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| 20 | } |
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| 21 | } |
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| 22 | |
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| 23 | bool QFontEngineMultiFontConfig::shouldLoadFontEngineForCharacter(int at, uint ucs4) const |
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| 24 | { |
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| 25 | bool charSetHasChar = true; |
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| 26 | FcPattern *matchPattern = getMatchPatternForFallback(at: at - 1); |
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| 27 | if (matchPattern != nullptr) { |
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| 28 | FcCharSet *charSet; |
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| 29 | FcPatternGetCharSet(p: matchPattern, FC_CHARSET, n: 0, c: &charSet); |
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| 30 | charSetHasChar = FcCharSetHasChar(fcs: charSet, ucs4); |
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| 31 | } |
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| 32 | |
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| 33 | return charSetHasChar; |
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| 34 | } |
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| 35 | |
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| 36 | |
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| 37 | FcPattern * QFontEngineMultiFontConfig::getMatchPatternForFallback(int fallBackIndex) const |
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| 38 | { |
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| 39 | Q_ASSERT(fallBackIndex < fallbackFamilyCount()); |
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| 40 | if (fallbackFamilyCount() > cachedMatchPatterns.size()) |
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| 41 | cachedMatchPatterns.resize(size: fallbackFamilyCount()); |
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| 42 | FcPattern *ret = cachedMatchPatterns.at(i: fallBackIndex); |
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| 43 | if (ret) |
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| 44 | return ret; |
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| 45 | FcPattern *requestPattern = FcPatternCreate(); |
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| 46 | FcValue value; |
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| 47 | value.type = FcTypeString; |
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| 48 | QByteArray cs = fallbackFamilyAt(at: fallBackIndex).toUtf8(); |
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| 49 | value.u.s = reinterpret_cast<const FcChar8 *>(cs.data()); |
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| 50 | FcPatternAdd(p: requestPattern, FC_FAMILY, value, append: true); |
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| 51 | FcResult result; |
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| 52 | ret = FcFontMatch(config: nullptr, p: requestPattern, result: &result); |
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| 53 | cachedMatchPatterns.insert(i: fallBackIndex, t: ret); |
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| 54 | FcPatternDestroy(p: requestPattern); |
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| 55 | return ret; |
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| 56 | } |
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| 57 | |
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| 58 | QT_END_NAMESPACE |
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| 59 | |
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