/* * Copyright 2013 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "include/core/SkData.h" #include "include/core/SkFontMgr.h" #include "include/core/SkRefCnt.h" #include "include/core/SkStream.h" #include "include/core/SkTypeface.h" #include "include/ports/SkTypeface_win.h" #include "include/private/SkFixed.h" #include "src/core/SkAdvancedTypefaceMetrics.h" #include "src/core/SkFontDescriptor.h" #include "src/core/SkFontMgrPriv.h" #include "src/core/SkFontPriv.h" #include "src/core/SkTypefaceCache.h" #include "src/sfnt/SkOTTable_OS_2.h" #include "src/sfnt/SkSFNTHeader.h" #include "src/utils/SkUTF.h" #include "tests/Test.h" #include "tools/Resources.h" #include "tools/ToolUtils.h" #include "tools/fonts/TestEmptyTypeface.h" #include #include static void TypefaceStyle_test(skiatest::Reporter* reporter, uint16_t weight, uint16_t width, SkData* data) { sk_sp dataCopy; if (!data->unique()) { dataCopy = SkData::MakeWithCopy(data->data(), data->size()); data = dataCopy.get(); } SkSFNTHeader* sfntHeader = static_cast(data->writable_data()); SkSFNTHeader::TableDirectoryEntry* tableEntry = SkTAfter(sfntHeader); SkSFNTHeader::TableDirectoryEntry* os2TableEntry = nullptr; int numTables = SkEndian_SwapBE16(sfntHeader->numTables); for (int tableEntryIndex = 0; tableEntryIndex < numTables; ++tableEntryIndex) { if (SkOTTableOS2::TAG == tableEntry[tableEntryIndex].tag) { os2TableEntry = tableEntry + tableEntryIndex; break; } } SkASSERT_RELEASE(os2TableEntry); size_t os2TableOffset = SkEndian_SwapBE32(os2TableEntry->offset); SkOTTableOS2_V0* os2Table = SkTAddOffset(sfntHeader, os2TableOffset); os2Table->usWeightClass.value = SkEndian_SwapBE16(weight); using WidthType = SkOTTableOS2_V0::WidthClass::Value; os2Table->usWidthClass.value = static_cast(SkEndian_SwapBE16(width)); sk_sp newTypeface(SkTypeface::MakeFromData(sk_ref_sp(data))); if (!newTypeface) { // Not all SkFontMgr can MakeFromStream(). return; } SkFontStyle newStyle = newTypeface->fontStyle(); //printf("%d, %f\n", weight, (newStyle.weight() - (float)0x7FFF) / (float)0x7FFF); //printf("%d, %f\n", width , (newStyle.width() - (float)0x7F) / (float)0x7F); //printf("%d, %d\n", weight, newStyle.weight()); //printf("%d, %d\n", width , newStyle.width()); // Some back-ends (CG, GDI, DW) support OS/2 version A which uses 0 - 10 (but all differently). REPORTER_ASSERT(reporter, newStyle.weight() == weight || (weight <= 10 && newStyle.weight() == 100 * weight) || (weight == 4 && newStyle.weight() == 350) || // GDI weirdness (weight == 5 && newStyle.weight() == 400) || // GDI weirdness (weight == 0 && newStyle.weight() == 1) || // DW weirdness (weight == 1000 && newStyle.weight() == 999) // DW weirdness ); // Some back-ends (GDI) don't support width, ensure these always report 'medium'. REPORTER_ASSERT(reporter, newStyle.width() == width || newStyle.width() == 5); } DEF_TEST(TypefaceStyle, reporter) { std::unique_ptr stream(GetResourceAsStream("fonts/Em.ttf")); if (!stream) { REPORT_FAILURE(reporter, "fonts/Em.ttf", SkString("Cannot load resource")); return; } sk_sp data(SkData::MakeFromStream(stream.get(), stream->getLength())); using SkFS = SkFontStyle; for (int weight = SkFS::kInvisible_Weight; weight <= SkFS::kExtraBlack_Weight; ++weight) { TypefaceStyle_test(reporter, weight, 5, data.get()); } for (int width = SkFS::kUltraCondensed_Width; width <= SkFS::kUltraExpanded_Width; ++width) { TypefaceStyle_test(reporter, 400, width, data.get()); } } DEF_TEST(TypefacePostScriptName, reporter) { sk_sp typeface(MakeResourceAsTypeface("fonts/Em.ttf")); if (!typeface) { // Not all SkFontMgr can MakeFromStream(). return; } SkString postScriptName; bool hasName = typeface->getPostScriptName(&postScriptName); bool hasName2 = typeface->getPostScriptName(nullptr); REPORTER_ASSERT(reporter, hasName == hasName2); if (hasName) { REPORTER_ASSERT(reporter, postScriptName == SkString("Em")); } } DEF_TEST(TypefaceRoundTrip, reporter) { sk_sp typeface(MakeResourceAsTypeface("fonts/7630.otf")); if (!typeface) { // Not all SkFontMgr can MakeFromStream(). return; } int fontIndex; std::unique_ptr stream = typeface->openStream(&fontIndex); sk_sp fm = SkFontMgr::RefDefault(); sk_sp typeface2 = fm->makeFromStream(std::move(stream), fontIndex); REPORTER_ASSERT(reporter, typeface2); } DEF_TEST(FontDescriptorNegativeVariationSerialize, reporter) { SkFontDescriptor desc; SkFontStyle style(2, 9, SkFontStyle::kOblique_Slant); desc.setStyle(style); const char postscriptName[] = "postscript"; desc.setPostscriptName(postscriptName); SkFontArguments::VariationPosition::Coordinate* variation = desc.setVariationCoordinates(1); variation[0] = { 0, -1.0f }; SkDynamicMemoryWStream stream; desc.serialize(&stream); SkFontDescriptor descD; SkFontDescriptor::Deserialize(stream.detachAsStream().get(), &descD); REPORTER_ASSERT(reporter, descD.getStyle() == style); REPORTER_ASSERT(reporter, 0 == strcmp(desc.getPostscriptName(), postscriptName)); if (descD.getVariationCoordinateCount() != 1) { REPORT_FAILURE(reporter, "descD.getVariationCoordinateCount() != 1", SkString()); return; } REPORTER_ASSERT(reporter, descD.getVariation()[0].value == -1.0f); }; DEF_TEST(TypefaceAxes, reporter) { using Variation = SkFontArguments::VariationPosition; // In DWrite in at least up to 1901 18363.1198 IDWriteFontFace5::GetFontAxisValues and // GetFontAxisValueCount along with IDWriteFontResource::GetFontAxisAttributes and // GetFontAxisCount (and related) seem to incorrectly collapse multiple axes with the same tag. // Since this is a limitation of the underlying implementation, for now allow the test to pass // with the axis tag count (as opposed to the axis count). Eventually all implementations should // pass this test without 'alsoAcceptedAxisTagCount'. auto test = [&](SkTypeface* typeface, const Variation& expected, int alsoAcceptedAxisTagCount) { if (!typeface) { return; // Not all SkFontMgr can makeFromStream(). } int actualCount = typeface->getVariationDesignPosition(nullptr, 0); if (actualCount == -1) { return; // The number of axes is unknown. } REPORTER_ASSERT(reporter, actualCount == expected.coordinateCount || actualCount == alsoAcceptedAxisTagCount); // Variable font conservative bounds don't vary, so ensure they aren't reported. REPORTER_ASSERT(reporter, typeface->getBounds().isEmpty()); std::unique_ptr actual(new Variation::Coordinate[actualCount]); actualCount = typeface->getVariationDesignPosition(actual.get(), actualCount); if (actualCount == -1) { return; // The position cannot be determined. } REPORTER_ASSERT(reporter, actualCount == expected.coordinateCount || actualCount == alsoAcceptedAxisTagCount); // Every actual must be expected. std::unique_ptr expectedUsed(new bool[expected.coordinateCount]()); for (int actualIdx = 0; actualIdx < actualCount; ++actualIdx) { bool actualFound = false; for (int expectedIdx = 0; expectedIdx < expected.coordinateCount; ++expectedIdx) { if (expectedUsed[expectedIdx]) { continue; } if (actual[actualIdx].axis != expected.coordinates[expectedIdx].axis) { continue; } // Convert to fixed for "almost equal". SkFixed fixedRead = SkScalarToFixed(actual[actualIdx].value); SkFixed fixedOriginal = SkScalarToFixed(expected.coordinates[expectedIdx].value); if (!(SkTAbs(fixedRead - fixedOriginal) < 2)) { continue; } // This actual matched an unused expected. actualFound = true; expectedUsed[expectedIdx] = true; break; } REPORTER_ASSERT(reporter, actualFound, "Actual axis '%c%c%c%c' with value '%f' not expected", (actual[actualIdx].axis >> 24) & 0xFF, (actual[actualIdx].axis >> 16) & 0xFF, (actual[actualIdx].axis >> 8) & 0xFF, (actual[actualIdx].axis ) & 0xFF, SkScalarToDouble(actual[actualIdx].value)); } }; sk_sp fm = SkFontMgr::RefDefault(); // Not specifying a position should produce the default. { std::unique_ptr variable(GetResourceAsStream("fonts/Variable.ttf")); if (!variable) { REPORT_FAILURE(reporter, "variable", SkString()); return; } const Variation::Coordinate defaultPosition[] = { { SkSetFourByteTag('w','g','h','t'), 400.0f }, { SkSetFourByteTag('w','d','t','h'), 100.0f }, }; sk_sp typeface = fm->makeFromStream(std::move(variable), 0); test(typeface.get(), Variation{&defaultPosition[0], 2}, -1); } // Multiple axes with the same tag (and min, max, default) works. { std::unique_ptr dupTags(GetResourceAsStream("fonts/VaryAlongQuads.ttf")); if (!dupTags) { REPORT_FAILURE(reporter, "dupTags", SkString()); return; } // The position may be over specified. If there are multiple values for a given axis, // ensure the last one since that's what css-fonts-4 requires. const Variation::Coordinate position[] = { { SkSetFourByteTag('w','g','h','t'), 700.0f }, { SkSetFourByteTag('w','g','h','t'), 600.0f }, { SkSetFourByteTag('w','g','h','t'), 600.0f }, }; SkFontArguments params; params.setVariationDesignPosition({position, SK_ARRAY_COUNT(position)}); sk_sp typeface = fm->makeFromStream(std::move(dupTags), params); test(typeface.get(), Variation{&position[1], 2}, 1); } // Overspecifying an axis tag value applies the last one in the list. { std::unique_ptr distortable(GetResourceAsStream("fonts/Distortable.ttf")); if (!distortable) { REPORT_FAILURE(reporter, "distortable", SkString()); return; } // The position may be over specified. If there are multiple values for a given axis, // ensure the last one since that's what css-fonts-4 requires. const Variation::Coordinate position[] = { { SkSetFourByteTag('w','g','h','t'), 1.618033988749895f }, { SkSetFourByteTag('w','g','h','t'), SK_ScalarSqrt2 }, }; SkFontArguments params; params.setVariationDesignPosition({position, SK_ARRAY_COUNT(position)}); sk_sp typeface = fm->makeFromStream(std::move(distortable), params); test(typeface.get(), Variation{&position[1], 1}, -1); if (typeface) { // Cloning without specifying any parameters should produce an equivalent variation. sk_sp clone = typeface->makeClone(SkFontArguments()); test(clone.get(), Variation{&position[1], 1}, -1); } } } DEF_TEST(TypefaceVariationIndex, reporter) { std::unique_ptr distortable(GetResourceAsStream("fonts/Distortable.ttf")); if (!distortable) { REPORT_FAILURE(reporter, "distortable", SkString()); return; } sk_sp fm = SkFontMgr::RefDefault(); SkFontArguments params; // The first named variation position in Distortable is 'Thin'. params.setCollectionIndex(0x00010000); sk_sp typeface = fm->makeFromStream(std::move(distortable), params); if (!typeface) { // FreeType is the only weird thing that supports this, Skia just needs to make sure if it // gets one of these things make sense. return; } int count = typeface->getVariationDesignPosition(nullptr, 0); if (!(count == 1)) { REPORT_FAILURE(reporter, "count == 1", SkString()); return; } SkFontArguments::VariationPosition::Coordinate positionRead[1]; count = typeface->getVariationDesignPosition(positionRead, SK_ARRAY_COUNT(positionRead)); if (count == -1) { return; } if (!(count == 1)) { REPORT_FAILURE(reporter, "count == 1", SkString()); return; } REPORTER_ASSERT(reporter, positionRead[0].axis == SkSetFourByteTag('w','g','h','t')); REPORTER_ASSERT(reporter, positionRead[0].value == 0.5); } DEF_TEST(Typeface, reporter) { sk_sp t1(SkTypeface::MakeFromName(nullptr, SkFontStyle())); sk_sp t2(SkTypeface::MakeDefault()); REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), t2.get())); REPORTER_ASSERT(reporter, SkTypeface::Equal(nullptr, t1.get())); REPORTER_ASSERT(reporter, SkTypeface::Equal(nullptr, t2.get())); REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), nullptr)); REPORTER_ASSERT(reporter, SkTypeface::Equal(t2.get(), nullptr)); } DEF_TEST(TypefaceAxesParameters, reporter) { using Axis = SkFontParameters::Variation::Axis; // In DWrite in at least up to 1901 18363.1198 IDWriteFontFace5::GetFontAxisValues and // GetFontAxisValueCount along with IDWriteFontResource::GetFontAxisAttributes and // GetFontAxisCount (and related) seem to incorrectly collapse multiple axes with the same tag. // Since this is a limitation of the underlying implementation, for now allow the test to pass // with the axis tag count (as opposed to the axis count). Eventually all implementations should // pass this test without 'alsoAcceptedAxisTagCount'. auto test = [&](SkTypeface* typeface, const Axis* expected, int expectedCount, int alsoAcceptedAxisTagCount) { if (!typeface) { return; // Not all SkFontMgr can makeFromStream(). } int actualCount = typeface->getVariationDesignParameters(nullptr, 0); if (actualCount == -1) { return; // The number of axes is unknown. } REPORTER_ASSERT(reporter, actualCount == expectedCount || actualCount == alsoAcceptedAxisTagCount); std::unique_ptr actual(new Axis[actualCount]); actualCount = typeface->getVariationDesignParameters(actual.get(), actualCount); if (actualCount == -1) { return; // The position cannot be determined. } REPORTER_ASSERT(reporter, actualCount == expectedCount || actualCount == alsoAcceptedAxisTagCount); // Every actual must be expected. std::unique_ptr expectedUsed(new bool[expectedCount]()); for (int actualIdx = 0; actualIdx < actualCount; ++actualIdx) { bool actualFound = false; for (int expectedIdx = 0; expectedIdx < expectedCount; ++expectedIdx) { if (expectedUsed[expectedIdx]) { continue; } if (actual[actualIdx].tag != expected[expectedIdx].tag) { continue; } // Convert to fixed for "almost equal". SkFixed fixedActualMin = SkScalarToFixed(actual[actualIdx].min); SkFixed fixedExpectedMin = SkScalarToFixed(expected[expectedIdx].min); if (!(SkTAbs(fixedActualMin - fixedExpectedMin) < 2)) { continue; } SkFixed fixedActualMax = SkScalarToFixed(actual[actualIdx].max); SkFixed fixedExpectedMax = SkScalarToFixed(expected[expectedIdx].max); if (!(SkTAbs(fixedActualMax - fixedExpectedMax) < 2)) { continue; } SkFixed fixedActualDefault = SkScalarToFixed(actual[actualIdx].def); SkFixed fixedExpectedDefault = SkScalarToFixed(expected[expectedIdx].def); if (!(SkTAbs(fixedActualDefault - fixedExpectedDefault) < 2)) { continue; } // This seems silly, but allows MSAN to ensure that isHidden is initialized. // In GDI or before macOS 10.12, Win10, or FreeType 2.8.1 API for hidden is missing. if (actual[actualIdx].isHidden() && actual[actualIdx].isHidden() != expected[expectedIdx].isHidden()) { continue; } // This actual matched an unused expected. actualFound = true; expectedUsed[expectedIdx] = true; break; } REPORTER_ASSERT(reporter, actualFound, "Actual axis '%c%c%c%c' with min %f max %f default %f hidden %s not expected", (actual[actualIdx].tag >> 24) & 0xFF, (actual[actualIdx].tag >> 16) & 0xFF, (actual[actualIdx].tag >> 8) & 0xFF, (actual[actualIdx].tag ) & 0xFF, actual[actualIdx].min, actual[actualIdx].def, actual[actualIdx].max, actual[actualIdx].isHidden() ? "true" : "false"); } }; sk_sp fm = SkFontMgr::RefDefault(); // Two axis OpenType variable font. { std::unique_ptr variable(GetResourceAsStream("fonts/Variable.ttf")); if (!variable) { REPORT_FAILURE(reporter, "variable", SkString()); return; } constexpr Axis expected[] = { Axis(SkSetFourByteTag('w','g','h','t'), 100.0f, 400.0f, 900.0f, true ), Axis(SkSetFourByteTag('w','d','t','h'), 50.0f, 100.0f, 200.0f, false), }; sk_sp typeface = fm->makeFromStream(std::move(variable), 0); test(typeface.get(), &expected[0], SK_ARRAY_COUNT(expected), -1); } // Multiple axes with the same tag (and min, max, default) works. { std::unique_ptr dupTags(GetResourceAsStream("fonts/VaryAlongQuads.ttf")); if (!dupTags) { REPORT_FAILURE(reporter, "dupTags", SkString()); return; } // The position may be over specified. If there are multiple values for a given axis, // ensure the last one since that's what css-fonts-4 requires. constexpr Axis expected[] = { Axis(SkSetFourByteTag('w','g','h','t'), 100.0f, 400.0f, 900.0f, false), Axis(SkSetFourByteTag('w','g','h','t'), 100.0f, 400.0f, 900.0f, false), }; sk_sp typeface = fm->makeFromStream(std::move(dupTags), 0); test(typeface.get(), &expected[0], SK_ARRAY_COUNT(expected), 1); } // Simple single axis GX variable font. { std::unique_ptr distortable(GetResourceAsStream("fonts/Distortable.ttf")); if (!distortable) { REPORT_FAILURE(reporter, "distortable", SkString()); return; } constexpr Axis expected[] = { Axis(SkSetFourByteTag('w','g','h','t'), 0.5f, 1.0f, 2.0f, true), }; sk_sp typeface = fm->makeFromStream(std::move(distortable), 0); test(typeface.get(), &expected[0], SK_ARRAY_COUNT(expected), -1); } } static bool count_proc(SkTypeface* face, void* ctx) { int* count = static_cast(ctx); *count = *count + 1; return false; } static int count(skiatest::Reporter* reporter, const SkTypefaceCache& cache) { int count = 0; sk_sp none = cache.findByProcAndRef(count_proc, &count); REPORTER_ASSERT(reporter, none == nullptr); return count; } DEF_TEST(TypefaceCache, reporter) { sk_sp t1(TestEmptyTypeface::Make()); { SkTypefaceCache cache; REPORTER_ASSERT(reporter, count(reporter, cache) == 0); { sk_sp t0(TestEmptyTypeface::Make()); cache.add(t0); REPORTER_ASSERT(reporter, count(reporter, cache) == 1); cache.add(t1); REPORTER_ASSERT(reporter, count(reporter, cache) == 2); cache.purgeAll(); REPORTER_ASSERT(reporter, count(reporter, cache) == 2); } REPORTER_ASSERT(reporter, count(reporter, cache) == 2); cache.purgeAll(); REPORTER_ASSERT(reporter, count(reporter, cache) == 1); } REPORTER_ASSERT(reporter, t1->unique()); } static void check_serialize_behaviors(sk_sp tf, bool isLocalData, skiatest::Reporter* reporter) { if (!tf) { return; } auto data0 = tf->serialize(SkTypeface::SerializeBehavior::kDoIncludeData); auto data1 = tf->serialize(SkTypeface::SerializeBehavior::kDontIncludeData); auto data2 = tf->serialize(SkTypeface::SerializeBehavior::kIncludeDataIfLocal); REPORTER_ASSERT(reporter, data0->size() >= data1->size()); if (isLocalData) { REPORTER_ASSERT(reporter, data0->equals(data2.get())); } else { REPORTER_ASSERT(reporter, data1->equals(data2.get())); } } DEF_TEST(Typeface_serialize, reporter) { check_serialize_behaviors(SkTypeface::MakeDefault(), false, reporter); check_serialize_behaviors(SkTypeface::MakeFromStream( GetResourceAsStream("fonts/Distortable.ttf")), true, reporter); } DEF_TEST(Typeface_glyph_to_char, reporter) { SkFont font(ToolUtils::emoji_typeface(), 12); SkASSERT(font.getTypeface()); char const * text = ToolUtils::emoji_sample_text(); size_t const textLen = strlen(text); SkString familyName; font.getTypeface()->getFamilyName(&familyName); size_t const codepointCount = SkUTF::CountUTF8(text, textLen); char const * const textEnd = text + textLen; std::unique_ptr originalCodepoints(new SkUnichar[codepointCount]); for (size_t i = 0; i < codepointCount; ++i) { originalCodepoints[i] = SkUTF::NextUTF8(&text, textEnd); } std::unique_ptr glyphs(new SkGlyphID[codepointCount]); font.unicharsToGlyphs(originalCodepoints.get(), codepointCount, glyphs.get()); if (std::any_of(glyphs.get(), glyphs.get()+codepointCount, [](SkGlyphID g){ return g == 0;})) { ERRORF(reporter, "Unexpected typeface \"%s\". Expected full support for emoji_sample_text.", familyName.c_str()); return; } std::unique_ptr newCodepoints(new SkUnichar[codepointCount]); SkFontPriv::GlyphsToUnichars(font, glyphs.get(), codepointCount, newCodepoints.get()); for (size_t i = 0; i < codepointCount; ++i) { #if defined(SK_BUILD_FOR_WIN) // GDI does not support character to glyph mapping outside BMP. if (gSkFontMgr_DefaultFactory == &SkFontMgr_New_GDI && 0xFFFF < originalCodepoints[i] && newCodepoints[i] == 0) { continue; } #endif // If two codepoints map to the same glyph then this assert is not valid. // However, the emoji test font should never have multiple characters map to the same glyph. REPORTER_ASSERT(reporter, originalCodepoints[i] == newCodepoints[i], "name:%s i:%zu original:%d new:%d glyph:%d", familyName.c_str(), i, originalCodepoints[i], newCodepoints[i], glyphs[i]); } } // This test makes sure the legacy typeface creation does not lose its specified // style. See https://bugs.chromium.org/p/skia/issues/detail?id=8447 for more // context. DEF_TEST(LegacyMakeTypeface, reporter) { sk_sp fm = SkFontMgr::RefDefault(); sk_sp typeface1 = fm->legacyMakeTypeface(nullptr, SkFontStyle::Italic()); sk_sp typeface2 = fm->legacyMakeTypeface(nullptr, SkFontStyle::Bold()); sk_sp typeface3 = fm->legacyMakeTypeface(nullptr, SkFontStyle::BoldItalic()); REPORTER_ASSERT(reporter, typeface1->isItalic()); REPORTER_ASSERT(reporter, !typeface1->isBold()); REPORTER_ASSERT(reporter, !typeface2->isItalic()); REPORTER_ASSERT(reporter, typeface2->isBold()); REPORTER_ASSERT(reporter, typeface3->isItalic()); REPORTER_ASSERT(reporter, typeface3->isBold()); }