| /* |
| * Copyright 2012 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/SkFont.h" |
| #include "include/core/SkFontStyle.h" |
| #include "include/core/SkFontTypes.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkStream.h" |
| #include "include/core/SkTypeface.h" |
| #include "include/core/SkTypes.h" |
| #include "include/private/base/SkDebug.h" |
| #include "include/private/base/SkTemplates.h" |
| #include "src/base/SkAutoMalloc.h" |
| #include "src/core/SkEndian.h" |
| #include "src/core/SkFontStream.h" |
| #include "tests/Test.h" |
| #include "tools/Resources.h" |
| |
| #include <cstdint> |
| #include <cstring> |
| #include <memory> |
| #include <string> |
| |
| using namespace skia_private; |
| |
| //#define DUMP_TABLES |
| //#define DUMP_TTC_TABLES |
| |
| #define kFontTableTag_head SkSetFourByteTag('h', 'e', 'a', 'd') |
| #define kFontTableTag_hhea SkSetFourByteTag('h', 'h', 'e', 'a') |
| #define kFontTableTag_maxp SkSetFourByteTag('m', 'a', 'x', 'p') |
| |
| static const struct TagSize { |
| SkFontTableTag fTag; |
| size_t fSize; |
| } gKnownTableSizes[] = { |
| { kFontTableTag_head, 54 }, |
| { kFontTableTag_hhea, 36 }, |
| }; |
| |
| // Test that getUnitsPerEm() agrees with a direct lookup in the 'head' table |
| // (if that table is available). |
| static void test_unitsPerEm(skiatest::Reporter* reporter, const sk_sp<SkTypeface>& face) { |
| int nativeUPEM = face->getUnitsPerEm(); |
| |
| int tableUPEM = -1; |
| size_t size = face->getTableSize(kFontTableTag_head); |
| if (size) { |
| // unitsPerEm is at offset 18 into the 'head' table. |
| uint16_t rawUPEM; |
| face->getTableData(kFontTableTag_head, 18, sizeof(rawUPEM), &rawUPEM); |
| tableUPEM = SkEndian_SwapBE16(rawUPEM); |
| } |
| |
| if (tableUPEM >= 0) { |
| REPORTER_ASSERT(reporter, tableUPEM == nativeUPEM); |
| } |
| } |
| |
| // Test that countGlyphs() agrees with a direct lookup in the 'maxp' table |
| // (if that table is available). |
| static void test_countGlyphs(skiatest::Reporter* reporter, const sk_sp<SkTypeface>& face) { |
| int nativeGlyphs = face->countGlyphs(); |
| |
| int tableGlyphs = -1; |
| size_t size = face->getTableSize(kFontTableTag_maxp); |
| if (size) { |
| // glyphs is at offset 4 into the 'maxp' table. |
| uint16_t rawGlyphs; |
| face->getTableData(kFontTableTag_maxp, 4, sizeof(rawGlyphs), &rawGlyphs); |
| tableGlyphs = SkEndian_SwapBE16(rawGlyphs); |
| } |
| |
| if (tableGlyphs >= 0) { |
| REPORTER_ASSERT(reporter, tableGlyphs == nativeGlyphs); |
| } |
| } |
| |
| static void test_fontstream(skiatest::Reporter* reporter, SkStream* stream, int ttcIndex) { |
| int n = SkFontStream::GetTableTags(stream, ttcIndex, nullptr); |
| AutoTArray<SkFontTableTag> array(n); |
| |
| int n2 = SkFontStream::GetTableTags(stream, ttcIndex, array.get()); |
| REPORTER_ASSERT(reporter, n == n2); |
| |
| for (int i = 0; i < n; ++i) { |
| #ifdef DUMP_TTC_TABLES |
| SkString str; |
| SkFontTableTag t = array[i]; |
| str.appendUnichar((t >> 24) & 0xFF); |
| str.appendUnichar((t >> 16) & 0xFF); |
| str.appendUnichar((t >> 8) & 0xFF); |
| str.appendUnichar((t >> 0) & 0xFF); |
| SkDebugf("[%d:%d] '%s'\n", ttcIndex, i, str.c_str()); |
| #endif |
| size_t size = SkFontStream::GetTableSize(stream, ttcIndex, array[i]); |
| for (size_t j = 0; j < std::size(gKnownTableSizes); ++j) { |
| if (gKnownTableSizes[j].fTag == array[i]) { |
| REPORTER_ASSERT(reporter, gKnownTableSizes[j].fSize == size); |
| } |
| } |
| } |
| } |
| |
| static void test_fontstream(skiatest::Reporter* reporter) { |
| std::unique_ptr<SkStreamAsset> stream(GetResourceAsStream("fonts/test.ttc")); |
| if (!stream) { |
| SkDebugf("Skipping FontHostTest::test_fontstream\n"); |
| return; |
| } |
| |
| int count = SkFontStream::CountTTCEntries(stream.get()); |
| #ifdef DUMP_TTC_TABLES |
| SkDebugf("CountTTCEntries %d\n", count); |
| #endif |
| for (int i = 0; i < count; ++i) { |
| test_fontstream(reporter, stream.get(), i); |
| } |
| } |
| |
| // Exercise this rare cmap format (platform 3, encoding 0) |
| static void test_symbolfont(skiatest::Reporter* reporter) { |
| auto tf = MakeResourceAsTypeface("fonts/SpiderSymbol.ttf"); |
| if (tf) { |
| SkUnichar c = 0xf021; |
| uint16_t g = SkFont(tf).unicharToGlyph(c); |
| REPORTER_ASSERT(reporter, g == 3); |
| } else { |
| // not all platforms support data fonts, so we just note that failure |
| SkDebugf("Skipping FontHostTest::test_symbolfont\n"); |
| } |
| } |
| |
| static void test_tables(skiatest::Reporter* reporter, const sk_sp<SkTypeface>& face) { |
| if ((false)) { // avoid bit rot, suppress warning |
| SkTypefaceID typefaceID = face->uniqueID(); |
| REPORTER_ASSERT(reporter, typefaceID); |
| } |
| |
| int count = face->countTables(); |
| |
| AutoTMalloc<SkFontTableTag> storage(count); |
| SkFontTableTag* tags = storage.get(); |
| |
| int count2 = face->getTableTags(tags); |
| REPORTER_ASSERT(reporter, count2 == count); |
| |
| for (int i = 0; i < count; ++i) { |
| size_t size = face->getTableSize(tags[i]); |
| REPORTER_ASSERT(reporter, size > 0); |
| |
| #ifdef DUMP_TABLES |
| char name[5]; |
| name[0] = (tags[i] >> 24) & 0xFF; |
| name[1] = (tags[i] >> 16) & 0xFF; |
| name[2] = (tags[i] >> 8) & 0xFF; |
| name[3] = (tags[i] >> 0) & 0xFF; |
| name[4] = 0; |
| SkDebugf("%s %d\n", name, size); |
| #endif |
| |
| for (size_t j = 0; j < std::size(gKnownTableSizes); ++j) { |
| if (gKnownTableSizes[j].fTag == tags[i]) { |
| REPORTER_ASSERT(reporter, gKnownTableSizes[j].fSize == size); |
| } |
| } |
| |
| // do we get the same size from GetTableData and GetTableSize |
| { |
| SkAutoMalloc data(size); |
| size_t size2 = face->getTableData(tags[i], 0, size, data.get()); |
| REPORTER_ASSERT(reporter, size2 == size); |
| sk_sp<SkData> data2 = face->copyTableData(tags[i]); |
| REPORTER_ASSERT(reporter, size == data2->size()); |
| REPORTER_ASSERT(reporter, !memcmp(data.get(), data2->data(), size)); |
| } |
| } |
| } |
| |
| static void test_tables(skiatest::Reporter* reporter) { |
| static const char* const gNames[] = { |
| nullptr, // default font |
| "Helvetica", "Arial", |
| "Times", "Times New Roman", |
| "Courier", "Courier New", |
| "Terminal", "MS Sans Serif", |
| "Hiragino Mincho ProN", "MS PGothic", |
| }; |
| |
| for (size_t i = 0; i < std::size(gNames); ++i) { |
| sk_sp<SkTypeface> face(SkTypeface::MakeFromName(gNames[i], SkFontStyle())); |
| if (face) { |
| #ifdef DUMP_TABLES |
| SkDebugf("%s\n", gNames[i]); |
| #endif |
| test_tables(reporter, face); |
| test_unitsPerEm(reporter, face); |
| test_countGlyphs(reporter, face); |
| } |
| } |
| } |
| |
| /* |
| * Verifies that the advance values returned by generateAdvance and |
| * generateMetrics match. |
| */ |
| static void test_advances(skiatest::Reporter* reporter) { |
| static const char* const faces[] = { |
| nullptr, // default font |
| "Arial", "Times", "Times New Roman", "Helvetica", "Courier", |
| "Courier New", "Verdana", "monospace", |
| }; |
| |
| static const struct { |
| SkFontHinting hinting; |
| bool linear; |
| bool subpixel; |
| } settings[] = { |
| { SkFontHinting::kNone, false, false }, |
| { SkFontHinting::kNone, true, false }, |
| { SkFontHinting::kNone, false, true }, |
| { SkFontHinting::kSlight, false, false }, |
| { SkFontHinting::kSlight, true, false }, |
| { SkFontHinting::kSlight, false, true }, |
| { SkFontHinting::kNormal, false, false }, |
| { SkFontHinting::kNormal, true, false }, |
| { SkFontHinting::kNormal, false, true }, |
| }; |
| |
| static const struct { |
| SkScalar fScaleX; |
| SkScalar fSkewX; |
| } gScaleRec[] = { |
| { SK_Scalar1, 0 }, |
| { SK_Scalar1/2, 0 }, |
| // these two exercise obliquing (skew) |
| { SK_Scalar1, -SK_Scalar1/4 }, |
| { SK_Scalar1/2, -SK_Scalar1/4 }, |
| }; |
| |
| SkFont font; |
| char const * const txt = "long.text.with.lots.of.dots."; |
| size_t textLen = strlen(txt); |
| |
| for (size_t i = 0; i < std::size(faces); i++) { |
| font.setTypeface(SkTypeface::MakeFromName(faces[i], SkFontStyle())); |
| |
| for (size_t j = 0; j < std::size(settings); j++) { |
| font.setHinting(settings[j].hinting); |
| font.setLinearMetrics(settings[j].linear); |
| font.setSubpixel(settings[j].subpixel); |
| |
| for (size_t k = 0; k < std::size(gScaleRec); ++k) { |
| font.setScaleX(gScaleRec[k].fScaleX); |
| font.setSkewX(gScaleRec[k].fSkewX); |
| |
| SkRect bounds; |
| |
| // For no hinting and light hinting this should take the |
| // optimized generateAdvance path. |
| SkScalar width1 = font.measureText(txt, textLen, SkTextEncoding::kUTF8); |
| |
| // Requesting the bounds forces a generateMetrics call. |
| SkScalar width2 = font.measureText(txt, textLen, SkTextEncoding::kUTF8, &bounds); |
| |
| // SkDebugf("Font: %s, generateAdvance: %f, generateMetrics: %f\n", |
| // faces[i], SkScalarToFloat(width1), SkScalarToFloat(width2)); |
| |
| REPORTER_ASSERT(reporter, width1 == width2); |
| } |
| } |
| } |
| } |
| |
| DEF_TEST(FontHost, reporter) { |
| test_tables(reporter); |
| test_fontstream(reporter); |
| test_advances(reporter); |
| test_symbolfont(reporter); |
| } |
| |
| // need tests for SkStrSearch |