djsollen@google.com | 1f584ed | 2013-09-19 12:08:40 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
Hal Canary | 209e4b1 | 2017-05-04 14:23:55 -0400 | [diff] [blame] | 8 | #include "SkAdvancedTypefaceMetrics.h" |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 9 | #include "SkData.h" |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 10 | #include "SkFixed.h" |
| 11 | #include "SkFontMgr.h" |
| 12 | #include "SkMakeUnique.h" |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 13 | #include "SkOTTable_OS_2.h" |
| 14 | #include "SkSFNTHeader.h" |
| 15 | #include "SkStream.h" |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 16 | #include "SkRefCnt.h" |
djsollen@google.com | 1f584ed | 2013-09-19 12:08:40 +0000 | [diff] [blame] | 17 | #include "SkTypeface.h" |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 18 | #include "SkTypefaceCache.h" |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 19 | #include "Resources.h" |
tfarina@chromium.org | 8f6884a | 2014-01-24 20:56:26 +0000 | [diff] [blame] | 20 | #include "Test.h" |
djsollen@google.com | 1f584ed | 2013-09-19 12:08:40 +0000 | [diff] [blame] | 21 | |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 22 | #include <memory> |
| 23 | |
| 24 | static void TypefaceStyle_test(skiatest::Reporter* reporter, |
| 25 | uint16_t weight, uint16_t width, SkData* data) |
| 26 | { |
| 27 | sk_sp<SkData> dataCopy; |
reed | 42943c8 | 2016-09-12 12:01:44 -0700 | [diff] [blame] | 28 | if (!data->unique()) { |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 29 | dataCopy = SkData::MakeWithCopy(data->data(), data->size()); |
reed | 42943c8 | 2016-09-12 12:01:44 -0700 | [diff] [blame] | 30 | data = dataCopy.get(); |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 31 | } |
reed | 42943c8 | 2016-09-12 12:01:44 -0700 | [diff] [blame] | 32 | SkSFNTHeader* sfntHeader = static_cast<SkSFNTHeader*>(data->writable_data()); |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 33 | |
| 34 | SkSFNTHeader::TableDirectoryEntry* tableEntry = |
| 35 | SkTAfter<SkSFNTHeader::TableDirectoryEntry>(sfntHeader); |
| 36 | SkSFNTHeader::TableDirectoryEntry* os2TableEntry = nullptr; |
| 37 | int numTables = SkEndian_SwapBE16(sfntHeader->numTables); |
| 38 | for (int tableEntryIndex = 0; tableEntryIndex < numTables; ++tableEntryIndex) { |
| 39 | if (SkOTTableOS2::TAG == tableEntry[tableEntryIndex].tag) { |
| 40 | os2TableEntry = tableEntry + tableEntryIndex; |
| 41 | break; |
| 42 | } |
| 43 | } |
| 44 | SkASSERT_RELEASE(os2TableEntry); |
| 45 | |
| 46 | size_t os2TableOffset = SkEndian_SwapBE32(os2TableEntry->offset); |
| 47 | SkOTTableOS2_V0* os2Table = SkTAddOffset<SkOTTableOS2_V0>(sfntHeader, os2TableOffset); |
| 48 | os2Table->usWeightClass.value = SkEndian_SwapBE16(weight); |
| 49 | using WidthType = SkOTTableOS2_V0::WidthClass::Value; |
| 50 | os2Table->usWidthClass.value = static_cast<WidthType>(SkEndian_SwapBE16(width)); |
| 51 | |
reed | 42943c8 | 2016-09-12 12:01:44 -0700 | [diff] [blame] | 52 | sk_sp<SkTypeface> newTypeface(SkTypeface::MakeFromStream(new SkMemoryStream(sk_ref_sp(data)))); |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 53 | SkASSERT_RELEASE(newTypeface); |
| 54 | |
| 55 | SkFontStyle newStyle = newTypeface->fontStyle(); |
| 56 | |
| 57 | //printf("%d, %f\n", weight, (newStyle.weight() - (float)0x7FFF) / (float)0x7FFF); |
| 58 | //printf("%d, %f\n", width , (newStyle.width() - (float)0x7F) / (float)0x7F); |
| 59 | //printf("%d, %d\n", weight, newStyle.weight()); |
| 60 | //printf("%d, %d\n", width , newStyle.width()); |
| 61 | |
| 62 | // Some back-ends (CG, GDI, DW) support OS/2 version A which uses 0 - 10 (but all differently). |
| 63 | REPORTER_ASSERT(reporter, |
| 64 | newStyle.weight() == weight || |
| 65 | (weight <= 10 && newStyle.weight() == 100 * weight) || |
| 66 | (weight == 4 && newStyle.weight() == 350) || // GDI weirdness |
| 67 | (weight == 5 && newStyle.weight() == 400) || // GDI weirdness |
| 68 | (weight == 0 && newStyle.weight() == 1) || // DW weirdness |
| 69 | (weight == 1000 && newStyle.weight() == 999) // DW weirdness |
| 70 | ); |
| 71 | |
| 72 | // Some back-ends (GDI) don't support width, ensure these always report 'medium'. |
| 73 | REPORTER_ASSERT(reporter, |
| 74 | newStyle.width() == width || |
| 75 | newStyle.width() == 5); |
| 76 | } |
| 77 | DEF_TEST(TypefaceStyle, reporter) { |
| 78 | std::unique_ptr<SkStreamAsset> stream(GetResourceAsStream("/fonts/Em.ttf")); |
| 79 | if (!stream) { |
| 80 | REPORT_FAILURE(reporter, "/fonts/Em.ttf", SkString("Cannot load resource")); |
| 81 | return; |
| 82 | } |
| 83 | sk_sp<SkData> data(SkData::MakeFromStream(stream.get(), stream->getLength())); |
| 84 | |
| 85 | using SkFS = SkFontStyle; |
| 86 | for (int weight = SkFS::kInvisible_Weight; weight <= SkFS::kExtraBlack_Weight; ++weight) { |
| 87 | TypefaceStyle_test(reporter, weight, 5, data.get()); |
| 88 | } |
bungeman | d783e08 | 2016-08-01 12:37:13 -0700 | [diff] [blame] | 89 | for (int width = SkFS::kUltraCondensed_Width; width <= SkFS::kUltraExpanded_Width; ++width) { |
bungeman | 6e45bda | 2016-07-25 15:11:49 -0700 | [diff] [blame] | 90 | TypefaceStyle_test(reporter, 400, width, data.get()); |
| 91 | } |
| 92 | } |
| 93 | |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 94 | DEF_TEST(TypefaceAxes, reporter) { |
| 95 | std::unique_ptr<SkStreamAsset> distortable(GetResourceAsStream("/fonts/Distortable.ttf")); |
| 96 | if (!distortable) { |
| 97 | REPORT_FAILURE(reporter, "distortable", SkString()); |
| 98 | return; |
| 99 | } |
bungeman | 9aec894 | 2017-03-29 13:38:53 -0400 | [diff] [blame] | 100 | constexpr int numberOfAxesInDistortable = 1; |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 101 | |
| 102 | sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault(); |
bungeman | 9aec894 | 2017-03-29 13:38:53 -0400 | [diff] [blame] | 103 | // The position may be over specified. If there are multiple values for a given axis, |
| 104 | // ensure the last one since that's what css-fonts-4 requires. |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 105 | const SkFontArguments::VariationPosition::Coordinate position[] = { |
bungeman | 9aec894 | 2017-03-29 13:38:53 -0400 | [diff] [blame] | 106 | { SkSetFourByteTag('w','g','h','t'), 1.618033988749895f }, |
| 107 | { SkSetFourByteTag('w','g','h','t'), SK_ScalarSqrt2 }, |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 108 | }; |
| 109 | SkFontArguments params; |
| 110 | params.setVariationDesignPosition({position, SK_ARRAY_COUNT(position)}); |
| 111 | // TODO: if axes are set and the back-end doesn't support them, should we create the typeface? |
| 112 | sk_sp<SkTypeface> typeface(fm->createFromStream(distortable.release(), params)); |
| 113 | |
| 114 | int count = typeface->getVariationDesignPosition(nullptr, 0); |
| 115 | if (count == -1) { |
| 116 | return; |
| 117 | } |
bungeman | 9aec894 | 2017-03-29 13:38:53 -0400 | [diff] [blame] | 118 | REPORTER_ASSERT(reporter, count == numberOfAxesInDistortable); |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 119 | |
bungeman | 9aec894 | 2017-03-29 13:38:53 -0400 | [diff] [blame] | 120 | SkFontArguments::VariationPosition::Coordinate positionRead[numberOfAxesInDistortable]; |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 121 | count = typeface->getVariationDesignPosition(positionRead, SK_ARRAY_COUNT(positionRead)); |
bungeman | 9aec894 | 2017-03-29 13:38:53 -0400 | [diff] [blame] | 122 | REPORTER_ASSERT(reporter, count == SK_ARRAY_COUNT(positionRead)); |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 123 | |
bungeman | 9aec894 | 2017-03-29 13:38:53 -0400 | [diff] [blame] | 124 | REPORTER_ASSERT(reporter, positionRead[0].axis == position[1].axis); |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 125 | |
| 126 | // Convert to fixed for "almost equal". |
| 127 | SkFixed fixedRead = SkScalarToFixed(positionRead[0].value); |
bungeman | 9aec894 | 2017-03-29 13:38:53 -0400 | [diff] [blame] | 128 | SkFixed fixedOriginal = SkScalarToFixed(position[1].value); |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 129 | REPORTER_ASSERT(reporter, fixedRead == fixedOriginal); |
| 130 | } |
| 131 | |
| 132 | DEF_TEST(TypefaceVariationIndex, reporter) { |
| 133 | std::unique_ptr<SkStreamAsset> distortable(GetResourceAsStream("/fonts/Distortable.ttf")); |
| 134 | if (!distortable) { |
| 135 | REPORT_FAILURE(reporter, "distortable", SkString()); |
| 136 | return; |
| 137 | } |
| 138 | |
| 139 | sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault(); |
| 140 | SkFontArguments params; |
| 141 | // The first named variation position in Distortable is 'Thin'. |
| 142 | params.setCollectionIndex(0x00010000); |
| 143 | sk_sp<SkTypeface> typeface(fm->createFromStream(distortable.release(), params)); |
| 144 | if (!typeface) { |
| 145 | // FreeType is the only weird thing that supports this, Skia just needs to make sure if it |
| 146 | // gets one of these things make sense. |
| 147 | return; |
| 148 | } |
| 149 | |
| 150 | int count = typeface->getVariationDesignPosition(nullptr, 0); |
| 151 | if (!(count == 1)) { |
| 152 | REPORT_FAILURE(reporter, "count == 1", SkString()); |
| 153 | return; |
| 154 | } |
| 155 | |
| 156 | SkFontArguments::VariationPosition::Coordinate positionRead[1]; |
| 157 | count = typeface->getVariationDesignPosition(positionRead, SK_ARRAY_COUNT(positionRead)); |
| 158 | if (count == -1) { |
| 159 | return; |
| 160 | } |
| 161 | if (!(count == 1)) { |
| 162 | REPORT_FAILURE(reporter, "count == 1", SkString()); |
| 163 | return; |
| 164 | } |
| 165 | REPORTER_ASSERT(reporter, positionRead[0].axis == SkSetFourByteTag('w','g','h','t')); |
| 166 | REPORTER_ASSERT(reporter, positionRead[0].value == 0.5); |
| 167 | } |
| 168 | |
tfarina@chromium.org | e4fafb1 | 2013-12-12 21:11:12 +0000 | [diff] [blame] | 169 | DEF_TEST(Typeface, reporter) { |
djsollen@google.com | 1f584ed | 2013-09-19 12:08:40 +0000 | [diff] [blame] | 170 | |
mboc | ee6a991 | 2016-05-31 11:42:36 -0700 | [diff] [blame] | 171 | sk_sp<SkTypeface> t1(SkTypeface::MakeFromName(nullptr, SkFontStyle())); |
bungeman | 13b9c95 | 2016-05-12 10:09:30 -0700 | [diff] [blame] | 172 | sk_sp<SkTypeface> t2(SkTypeface::MakeDefault(SkTypeface::kNormal)); |
djsollen@google.com | 1f584ed | 2013-09-19 12:08:40 +0000 | [diff] [blame] | 173 | |
| 174 | REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), t2.get())); |
| 175 | REPORTER_ASSERT(reporter, SkTypeface::Equal(0, t1.get())); |
| 176 | REPORTER_ASSERT(reporter, SkTypeface::Equal(0, t2.get())); |
| 177 | REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), 0)); |
| 178 | REPORTER_ASSERT(reporter, SkTypeface::Equal(t2.get(), 0)); |
| 179 | |
| 180 | #ifdef SK_BUILD_FOR_ANDROID |
mboc | ee6a991 | 2016-05-31 11:42:36 -0700 | [diff] [blame] | 181 | sk_sp<SkTypeface> t3(SkTypeface::MakeFromName("non-existent-font", SkFontStyle())); |
bungeman | 13b9c95 | 2016-05-12 10:09:30 -0700 | [diff] [blame] | 182 | REPORTER_ASSERT(reporter, nullptr == t3); |
djsollen@google.com | 1f584ed | 2013-09-19 12:08:40 +0000 | [diff] [blame] | 183 | #endif |
| 184 | } |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 185 | |
bungeman | a821af83 | 2016-04-14 09:44:34 -0700 | [diff] [blame] | 186 | namespace { |
| 187 | |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 188 | class SkEmptyTypeface : public SkTypeface { |
| 189 | public: |
bungeman | e3aea10 | 2016-07-13 05:16:58 -0700 | [diff] [blame] | 190 | static sk_sp<SkTypeface> Create() { return sk_sp<SkTypeface>(new SkEmptyTypeface()); } |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 191 | protected: |
bungeman | e3aea10 | 2016-07-13 05:16:58 -0700 | [diff] [blame] | 192 | SkEmptyTypeface() : SkTypeface(SkFontStyle(), true) { } |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 193 | |
| 194 | SkStreamAsset* onOpenStream(int* ttcIndex) const override { return nullptr; } |
| 195 | SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&, |
| 196 | const SkDescriptor*) const override { |
| 197 | return nullptr; |
| 198 | } |
| 199 | void onFilterRec(SkScalerContextRec*) const override { } |
Hal Canary | 209e4b1 | 2017-05-04 14:23:55 -0400 | [diff] [blame] | 200 | std::unique_ptr<SkAdvancedTypefaceMetrics> onGetAdvancedMetrics() const override { |
| 201 | return nullptr; |
| 202 | } |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 203 | void onGetFontDescriptor(SkFontDescriptor*, bool*) const override { } |
| 204 | virtual int onCharsToGlyphs(const void* chars, Encoding encoding, |
| 205 | uint16_t glyphs[], int glyphCount) const override { |
| 206 | SK_ABORT("unimplemented"); |
| 207 | return 0; |
| 208 | } |
Mike Klein | fc6c37b | 2016-09-27 09:34:10 -0400 | [diff] [blame] | 209 | int onCountGlyphs() const override { return 0; } |
| 210 | int onGetUPEM() const override { return 0; } |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 211 | void onGetFamilyName(SkString* familyName) const override { familyName->reset(); } |
| 212 | SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override { |
| 213 | SK_ABORT("unimplemented"); |
| 214 | return nullptr; |
Mike Klein | fc6c37b | 2016-09-27 09:34:10 -0400 | [diff] [blame] | 215 | } |
Ben Wagner | fc49734 | 2017-02-24 11:15:26 -0500 | [diff] [blame] | 216 | int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[], |
| 217 | int coordinateCount) const override |
| 218 | { |
| 219 | return 0; |
| 220 | } |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 221 | int onGetTableTags(SkFontTableTag tags[]) const override { return 0; } |
| 222 | size_t onGetTableData(SkFontTableTag, size_t, size_t, void*) const override { return 0; } |
| 223 | }; |
| 224 | |
bungeman | a821af83 | 2016-04-14 09:44:34 -0700 | [diff] [blame] | 225 | } |
| 226 | |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 227 | static bool count_proc(SkTypeface* face, void* ctx) { |
| 228 | int* count = static_cast<int*>(ctx); |
| 229 | *count = *count + 1; |
| 230 | return false; |
| 231 | } |
| 232 | static int count(skiatest::Reporter* reporter, const SkTypefaceCache& cache) { |
| 233 | int count = 0; |
| 234 | SkTypeface* none = cache.findByProcAndRef(count_proc, &count); |
| 235 | REPORTER_ASSERT(reporter, none == nullptr); |
| 236 | return count; |
| 237 | } |
| 238 | |
| 239 | DEF_TEST(TypefaceCache, reporter) { |
bungeman | e3aea10 | 2016-07-13 05:16:58 -0700 | [diff] [blame] | 240 | sk_sp<SkTypeface> t1(SkEmptyTypeface::Create()); |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 241 | { |
| 242 | SkTypefaceCache cache; |
| 243 | REPORTER_ASSERT(reporter, count(reporter, cache) == 0); |
| 244 | { |
bungeman | e3aea10 | 2016-07-13 05:16:58 -0700 | [diff] [blame] | 245 | sk_sp<SkTypeface> t0(SkEmptyTypeface::Create()); |
bungeman | 82a455f | 2016-04-14 08:04:45 -0700 | [diff] [blame] | 246 | cache.add(t0.get()); |
| 247 | REPORTER_ASSERT(reporter, count(reporter, cache) == 1); |
| 248 | cache.add(t1.get()); |
| 249 | REPORTER_ASSERT(reporter, count(reporter, cache) == 2); |
| 250 | cache.purgeAll(); |
| 251 | REPORTER_ASSERT(reporter, count(reporter, cache) == 2); |
| 252 | } |
| 253 | REPORTER_ASSERT(reporter, count(reporter, cache) == 2); |
| 254 | cache.purgeAll(); |
| 255 | REPORTER_ASSERT(reporter, count(reporter, cache) == 1); |
| 256 | } |
| 257 | REPORTER_ASSERT(reporter, t1->unique()); |
| 258 | } |