| /* |
| * 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 "Resources.h" |
| #include "SkAdvancedTypefaceMetrics.h" |
| #include "SkData.h" |
| #include "SkFixed.h" |
| #include "SkFontDescriptor.h" |
| #include "SkFontMgr.h" |
| #include "SkMakeUnique.h" |
| #include "SkOTTable_OS_2.h" |
| #include "SkRefCnt.h" |
| #include "SkSFNTHeader.h" |
| #include "SkStream.h" |
| #include "SkTypeface.h" |
| #include "SkTypefaceCache.h" |
| #include "Test.h" |
| #include "TestEmptyTypeface.h" |
| |
| #include <memory> |
| |
| static void TypefaceStyle_test(skiatest::Reporter* reporter, |
| uint16_t weight, uint16_t width, SkData* data) |
| { |
| sk_sp<SkData> dataCopy; |
| if (!data->unique()) { |
| dataCopy = SkData::MakeWithCopy(data->data(), data->size()); |
| data = dataCopy.get(); |
| } |
| SkSFNTHeader* sfntHeader = static_cast<SkSFNTHeader*>(data->writable_data()); |
| |
| SkSFNTHeader::TableDirectoryEntry* tableEntry = |
| SkTAfter<SkSFNTHeader::TableDirectoryEntry>(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<SkOTTableOS2_V0>(sfntHeader, os2TableOffset); |
| os2Table->usWeightClass.value = SkEndian_SwapBE16(weight); |
| using WidthType = SkOTTableOS2_V0::WidthClass::Value; |
| os2Table->usWidthClass.value = static_cast<WidthType>(SkEndian_SwapBE16(width)); |
| |
| sk_sp<SkTypeface> 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<SkStreamAsset> stream(GetResourceAsStream("fonts/Em.ttf")); |
| if (!stream) { |
| REPORT_FAILURE(reporter, "fonts/Em.ttf", SkString("Cannot load resource")); |
| return; |
| } |
| sk_sp<SkData> 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(TypefaceRoundTrip, reporter) { |
| sk_sp<SkTypeface> typeface(MakeResourceAsTypeface("fonts/7630.otf")); |
| if (!typeface) { |
| // Not all SkFontMgr can MakeFromStream(). |
| return; |
| } |
| |
| int fontIndex; |
| std::unique_ptr<SkStreamAsset> stream = typeface->openStream(&fontIndex); |
| |
| sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault(); |
| sk_sp<SkTypeface> typeface2 = fm->makeFromStream(std::move(stream), fontIndex); |
| REPORTER_ASSERT(reporter, typeface2); |
| } |
| |
| DEF_TEST(FontDescriptorNegativeVariationSerialize, reporter) { |
| SkFontDescriptor desc; |
| SkFixed axis = -SK_Fixed1; |
| auto font = skstd::make_unique<SkMemoryStream>("a", 1, false); |
| desc.setFontData(skstd::make_unique<SkFontData>(std::move(font), 0, &axis, 1)); |
| |
| SkDynamicMemoryWStream stream; |
| desc.serialize(&stream); |
| SkFontDescriptor descD; |
| SkFontDescriptor::Deserialize(stream.detachAsStream().get(), &descD); |
| std::unique_ptr<SkFontData> fontData = descD.detachFontData(); |
| if (!fontData) { |
| REPORT_FAILURE(reporter, "fontData", SkString()); |
| return; |
| } |
| |
| if (fontData->getAxisCount() != 1) { |
| REPORT_FAILURE(reporter, "fontData->getAxisCount() != 1", SkString()); |
| return; |
| } |
| |
| REPORTER_ASSERT(reporter, fontData->getAxis()[0] == -SK_Fixed1); |
| }; |
| |
| DEF_TEST(TypefaceAxes, reporter) { |
| std::unique_ptr<SkStreamAsset> distortable(GetResourceAsStream("fonts/Distortable.ttf")); |
| if (!distortable) { |
| REPORT_FAILURE(reporter, "distortable", SkString()); |
| return; |
| } |
| constexpr int numberOfAxesInDistortable = 1; |
| |
| sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault(); |
| // 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 SkFontArguments::VariationPosition::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)}); |
| // TODO: if axes are set and the back-end doesn't support them, should we create the typeface? |
| sk_sp<SkTypeface> typeface = fm->makeFromStream(std::move(distortable), params); |
| |
| if (!typeface) { |
| // Not all SkFontMgr can makeFromStream(). |
| return; |
| } |
| |
| int count = typeface->getVariationDesignPosition(nullptr, 0); |
| if (count == -1) { |
| return; |
| } |
| REPORTER_ASSERT(reporter, count == numberOfAxesInDistortable); |
| |
| SkFontArguments::VariationPosition::Coordinate positionRead[numberOfAxesInDistortable]; |
| count = typeface->getVariationDesignPosition(positionRead, SK_ARRAY_COUNT(positionRead)); |
| REPORTER_ASSERT(reporter, count == SK_ARRAY_COUNT(positionRead)); |
| |
| REPORTER_ASSERT(reporter, positionRead[0].axis == position[1].axis); |
| |
| // Convert to fixed for "almost equal". |
| SkFixed fixedRead = SkScalarToFixed(positionRead[0].value); |
| SkFixed fixedOriginal = SkScalarToFixed(position[1].value); |
| REPORTER_ASSERT(reporter, SkTAbs(fixedRead - fixedOriginal) < 2); |
| } |
| |
| DEF_TEST(TypefaceVariationIndex, reporter) { |
| std::unique_ptr<SkStreamAsset> distortable(GetResourceAsStream("fonts/Distortable.ttf")); |
| if (!distortable) { |
| REPORT_FAILURE(reporter, "distortable", SkString()); |
| return; |
| } |
| |
| sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault(); |
| SkFontArguments params; |
| // The first named variation position in Distortable is 'Thin'. |
| params.setCollectionIndex(0x00010000); |
| sk_sp<SkTypeface> 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<SkTypeface> t1(SkTypeface::MakeFromName(nullptr, SkFontStyle())); |
| sk_sp<SkTypeface> 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) { |
| std::unique_ptr<SkStreamAsset> distortable(GetResourceAsStream("fonts/Distortable.ttf")); |
| if (!distortable) { |
| REPORT_FAILURE(reporter, "distortable", SkString()); |
| return; |
| } |
| constexpr int numberOfAxesInDistortable = 1; |
| constexpr SkScalar minAxisInDistortable = 0.5; |
| constexpr SkScalar defAxisInDistortable = 1; |
| constexpr SkScalar maxAxisInDistortable = 2; |
| constexpr bool axisIsHiddenInDistortable = false; |
| |
| sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault(); |
| |
| SkFontArguments params; |
| sk_sp<SkTypeface> typeface = fm->makeFromStream(std::move(distortable), params); |
| |
| if (!typeface) { |
| // Not all SkFontMgr can makeFromStream(). |
| return; |
| } |
| |
| SkFontParameters::Variation::Axis parameter[numberOfAxesInDistortable]; |
| int count = typeface->getVariationDesignParameters(parameter, SK_ARRAY_COUNT(parameter)); |
| if (count == -1) { |
| return; |
| } |
| |
| REPORTER_ASSERT(reporter, count == SK_ARRAY_COUNT(parameter)); |
| REPORTER_ASSERT(reporter, parameter[0].min == minAxisInDistortable); |
| REPORTER_ASSERT(reporter, parameter[0].def == defAxisInDistortable); |
| REPORTER_ASSERT(reporter, parameter[0].max == maxAxisInDistortable); |
| REPORTER_ASSERT(reporter, parameter[0].tag == SkSetFourByteTag('w','g','h','t')); |
| REPORTER_ASSERT(reporter, parameter[0].isHidden() == axisIsHiddenInDistortable); |
| |
| } |
| |
| static bool count_proc(SkTypeface* face, void* ctx) { |
| int* count = static_cast<int*>(ctx); |
| *count = *count + 1; |
| return false; |
| } |
| static int count(skiatest::Reporter* reporter, const SkTypefaceCache& cache) { |
| int count = 0; |
| sk_sp<SkTypeface> none = cache.findByProcAndRef(count_proc, &count); |
| REPORTER_ASSERT(reporter, none == nullptr); |
| return count; |
| } |
| |
| DEF_TEST(TypefaceCache, reporter) { |
| sk_sp<SkTypeface> t1(TestEmptyTypeface::Make()); |
| { |
| SkTypefaceCache cache; |
| REPORTER_ASSERT(reporter, count(reporter, cache) == 0); |
| { |
| sk_sp<SkTypeface> 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<SkTypeface> 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); |
| |
| } |
| |
