reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 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 | |
| 8 | #include "Test.h" |
reed@google.com | 8b0a335 | 2012-04-19 18:52:39 +0000 | [diff] [blame] | 9 | #include "SkPaint.h" |
reed@google.com | ed268bf | 2013-03-11 20:13:36 +0000 | [diff] [blame] | 10 | #include "SkFontStream.h" |
| 11 | #include "SkStream.h" |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 12 | #include "SkTypeface.h" |
reed@google.com | 4b2af9c | 2012-07-31 17:24:44 +0000 | [diff] [blame] | 13 | #include "SkEndian.h" |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 14 | |
| 15 | //#define DUMP_TABLES |
reed@google.com | ed268bf | 2013-03-11 20:13:36 +0000 | [diff] [blame] | 16 | //#define DUMP_TTC_TABLES |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 17 | |
| 18 | #define kFontTableTag_head SkSetFourByteTag('h', 'e', 'a', 'd') |
| 19 | #define kFontTableTag_hhea SkSetFourByteTag('h', 'h', 'e', 'a') |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 20 | #define kFontTableTag_maxp SkSetFourByteTag('m', 'a', 'x', 'p') |
| 21 | |
| 22 | static const struct TagSize { |
| 23 | SkFontTableTag fTag; |
| 24 | size_t fSize; |
| 25 | } gKnownTableSizes[] = { |
| 26 | { kFontTableTag_head, 54 }, |
| 27 | { kFontTableTag_hhea, 36 }, |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 28 | { kFontTableTag_maxp, 32 }, |
| 29 | }; |
| 30 | |
reed@google.com | a262eea | 2013-03-21 15:20:00 +0000 | [diff] [blame] | 31 | // Test that getUnitsPerEm() agrees with a direct lookup in the 'head' table |
bungeman@google.com | 7bdd614 | 2013-07-15 19:42:57 +0000 | [diff] [blame] | 32 | // (if that table is available). |
reed@google.com | 4b2af9c | 2012-07-31 17:24:44 +0000 | [diff] [blame] | 33 | static void test_unitsPerEm(skiatest::Reporter* reporter, SkTypeface* face) { |
bungeman@google.com | 7bdd614 | 2013-07-15 19:42:57 +0000 | [diff] [blame] | 34 | int nativeUPEM = face->getUnitsPerEm(); |
reed@google.com | 4b2af9c | 2012-07-31 17:24:44 +0000 | [diff] [blame] | 35 | |
reed@google.com | a262eea | 2013-03-21 15:20:00 +0000 | [diff] [blame] | 36 | int tableUPEM = -1; |
reed@google.com | 4b2af9c | 2012-07-31 17:24:44 +0000 | [diff] [blame] | 37 | size_t size = face->getTableSize(kFontTableTag_head); |
| 38 | if (size) { |
reed@google.com | 4b2af9c | 2012-07-31 17:24:44 +0000 | [diff] [blame] | 39 | // unitsPerEm is at offset 18 into the 'head' table. |
bungeman@google.com | 7bdd614 | 2013-07-15 19:42:57 +0000 | [diff] [blame] | 40 | uint16_t rawUPEM; |
| 41 | face->getTableData(kFontTableTag_head, 18, sizeof(rawUPEM), &rawUPEM); |
| 42 | tableUPEM = SkEndian_SwapBE16(rawUPEM); |
reed@google.com | a262eea | 2013-03-21 15:20:00 +0000 | [diff] [blame] | 43 | } |
reed@google.com | a262eea | 2013-03-21 15:20:00 +0000 | [diff] [blame] | 44 | |
| 45 | if (tableUPEM >= 0) { |
| 46 | REPORTER_ASSERT(reporter, tableUPEM == nativeUPEM); |
| 47 | } else { |
| 48 | // not sure this is a bug, but lets report it for now as info. |
| 49 | SkDebugf("--- typeface returned 0 upem [%X]\n", face->uniqueID()); |
reed@google.com | 4b2af9c | 2012-07-31 17:24:44 +0000 | [diff] [blame] | 50 | } |
| 51 | } |
| 52 | |
bungeman@google.com | 7bdd614 | 2013-07-15 19:42:57 +0000 | [diff] [blame] | 53 | // Test that countGlyphs() agrees with a direct lookup in the 'maxp' table |
| 54 | // (if that table is available). |
| 55 | static void test_countGlyphs(skiatest::Reporter* reporter, SkTypeface* face) { |
| 56 | int nativeGlyphs = face->countGlyphs(); |
| 57 | |
| 58 | int tableGlyphs = -1; |
| 59 | size_t size = face->getTableSize(kFontTableTag_maxp); |
| 60 | if (size) { |
| 61 | // glyphs is at offset 4 into the 'maxp' table. |
| 62 | uint16_t rawGlyphs; |
| 63 | face->getTableData(kFontTableTag_maxp, 4, sizeof(rawGlyphs), &rawGlyphs); |
| 64 | tableGlyphs = SkEndian_SwapBE16(rawGlyphs); |
| 65 | } |
| 66 | |
| 67 | if (tableGlyphs >= 0) { |
| 68 | REPORTER_ASSERT(reporter, tableGlyphs == nativeGlyphs); |
| 69 | } else { |
| 70 | // not sure this is a bug, but lets report it for now as info. |
| 71 | SkDebugf("--- typeface returned 0 glyphs [%X]\n", face->uniqueID()); |
| 72 | } |
| 73 | } |
| 74 | |
reed@google.com | ed268bf | 2013-03-11 20:13:36 +0000 | [diff] [blame] | 75 | static void test_fontstream(skiatest::Reporter* reporter, |
| 76 | SkStream* stream, int ttcIndex) { |
| 77 | int n = SkFontStream::GetTableTags(stream, ttcIndex, NULL); |
| 78 | SkAutoTArray<SkFontTableTag> array(n); |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 79 | |
reed@google.com | ed268bf | 2013-03-11 20:13:36 +0000 | [diff] [blame] | 80 | int n2 = SkFontStream::GetTableTags(stream, ttcIndex, array.get()); |
| 81 | REPORTER_ASSERT(reporter, n == n2); |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 82 | |
reed@google.com | ed268bf | 2013-03-11 20:13:36 +0000 | [diff] [blame] | 83 | for (int i = 0; i < n; ++i) { |
| 84 | #ifdef DUMP_TTC_TABLES |
| 85 | SkString str; |
| 86 | SkFontTableTag t = array[i]; |
| 87 | str.appendUnichar((t >> 24) & 0xFF); |
| 88 | str.appendUnichar((t >> 16) & 0xFF); |
| 89 | str.appendUnichar((t >> 8) & 0xFF); |
| 90 | str.appendUnichar((t >> 0) & 0xFF); |
| 91 | SkDebugf("[%d:%d] '%s'\n", ttcIndex, i, str.c_str()); |
| 92 | #endif |
| 93 | size_t size = SkFontStream::GetTableSize(stream, ttcIndex, array[i]); |
| 94 | for (size_t j = 0; j < SK_ARRAY_COUNT(gKnownTableSizes); ++j) { |
| 95 | if (gKnownTableSizes[j].fTag == array[i]) { |
| 96 | REPORTER_ASSERT(reporter, gKnownTableSizes[j].fSize == size); |
| 97 | } |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 98 | } |
reed@google.com | ed268bf | 2013-03-11 20:13:36 +0000 | [diff] [blame] | 99 | } |
| 100 | } |
| 101 | |
| 102 | static void test_fontstream(skiatest::Reporter* reporter, SkStream* stream) { |
| 103 | int count = SkFontStream::CountTTCEntries(stream); |
| 104 | #ifdef DUMP_TTC_TABLES |
| 105 | SkDebugf("CountTTCEntries %d\n", count); |
| 106 | #endif |
| 107 | for (int i = 0; i < count; ++i) { |
| 108 | test_fontstream(reporter, stream, i); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | static void test_fontstream(skiatest::Reporter* reporter) { |
| 113 | // TODO: replace when we get a tools/resources/fonts/test.ttc |
| 114 | const char* name = "/AmericanTypewriter.ttc"; |
| 115 | SkFILEStream stream(name); |
| 116 | if (stream.isValid()) { |
| 117 | test_fontstream(reporter, &stream); |
| 118 | } |
| 119 | } |
| 120 | |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 121 | static void test_tables(skiatest::Reporter* reporter, SkTypeface* face) { |
caryclark@google.com | 42639cd | 2012-06-06 12:03:39 +0000 | [diff] [blame] | 122 | if (false) { // avoid bit rot, suppress warning |
robertphillips@google.com | 5b33211 | 2013-01-30 20:33:12 +0000 | [diff] [blame] | 123 | SkFontID fontID = face->uniqueID(); |
caryclark@google.com | 42639cd | 2012-06-06 12:03:39 +0000 | [diff] [blame] | 124 | REPORTER_ASSERT(reporter, fontID); |
| 125 | } |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 126 | |
reed@google.com | 8b0a335 | 2012-04-19 18:52:39 +0000 | [diff] [blame] | 127 | int count = face->countTables(); |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 128 | |
| 129 | SkAutoTMalloc<SkFontTableTag> storage(count); |
| 130 | SkFontTableTag* tags = storage.get(); |
reed@google.com | fbd033d | 2012-02-23 16:15:58 +0000 | [diff] [blame] | 131 | |
reed@google.com | 8b0a335 | 2012-04-19 18:52:39 +0000 | [diff] [blame] | 132 | int count2 = face->getTableTags(tags); |
reed@google.com | fbd033d | 2012-02-23 16:15:58 +0000 | [diff] [blame] | 133 | REPORTER_ASSERT(reporter, count2 == count); |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 134 | |
| 135 | for (int i = 0; i < count; ++i) { |
reed@google.com | 8b0a335 | 2012-04-19 18:52:39 +0000 | [diff] [blame] | 136 | size_t size = face->getTableSize(tags[i]); |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 137 | REPORTER_ASSERT(reporter, size > 0); |
| 138 | |
| 139 | #ifdef DUMP_TABLES |
| 140 | char name[5]; |
| 141 | name[0] = (tags[i] >> 24) & 0xFF; |
| 142 | name[1] = (tags[i] >> 16) & 0xFF; |
| 143 | name[2] = (tags[i] >> 8) & 0xFF; |
| 144 | name[3] = (tags[i] >> 0) & 0xFF; |
| 145 | name[4] = 0; |
| 146 | SkDebugf("%s %d\n", name, size); |
| 147 | #endif |
| 148 | |
| 149 | for (size_t j = 0; j < SK_ARRAY_COUNT(gKnownTableSizes); ++j) { |
| 150 | if (gKnownTableSizes[j].fTag == tags[i]) { |
| 151 | REPORTER_ASSERT(reporter, gKnownTableSizes[j].fSize == size); |
| 152 | } |
| 153 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 154 | |
reed@google.com | fbd033d | 2012-02-23 16:15:58 +0000 | [diff] [blame] | 155 | // do we get the same size from GetTableData and GetTableSize |
| 156 | { |
| 157 | SkAutoMalloc data(size); |
reed@google.com | 8b0a335 | 2012-04-19 18:52:39 +0000 | [diff] [blame] | 158 | size_t size2 = face->getTableData(tags[i], 0, size, data.get()); |
reed@google.com | fbd033d | 2012-02-23 16:15:58 +0000 | [diff] [blame] | 159 | REPORTER_ASSERT(reporter, size2 == size); |
| 160 | } |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 161 | } |
| 162 | } |
| 163 | |
| 164 | static void test_tables(skiatest::Reporter* reporter) { |
| 165 | static const char* const gNames[] = { |
| 166 | NULL, // default font |
| 167 | "Arial", "Times", "Times New Roman", "Helvetica", "Courier", |
bungeman@google.com | c0d3f2f | 2012-07-31 21:39:05 +0000 | [diff] [blame] | 168 | "Courier New", "Terminal", "MS Sans Serif", |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 169 | }; |
| 170 | |
| 171 | for (size_t i = 0; i < SK_ARRAY_COUNT(gNames); ++i) { |
| 172 | SkTypeface* face = SkTypeface::CreateFromName(gNames[i], |
| 173 | SkTypeface::kNormal); |
| 174 | if (face) { |
| 175 | #ifdef DUMP_TABLES |
| 176 | SkDebugf("%s\n", gNames[i]); |
| 177 | #endif |
| 178 | test_tables(reporter, face); |
reed@google.com | 4b2af9c | 2012-07-31 17:24:44 +0000 | [diff] [blame] | 179 | test_unitsPerEm(reporter, face); |
bungeman@google.com | 7bdd614 | 2013-07-15 19:42:57 +0000 | [diff] [blame] | 180 | test_countGlyphs(reporter, face); |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 181 | face->unref(); |
| 182 | } |
| 183 | } |
| 184 | } |
| 185 | |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 186 | /* |
| 187 | * Verifies that the advance values returned by generateAdvance and |
| 188 | * generateMetrics match. |
| 189 | */ |
| 190 | static void test_advances(skiatest::Reporter* reporter) { |
| 191 | static const char* const faces[] = { |
| 192 | NULL, // default font |
| 193 | "Arial", "Times", "Times New Roman", "Helvetica", "Courier", |
| 194 | "Courier New", "Verdana", "monospace", |
| 195 | }; |
| 196 | |
| 197 | static const struct { |
| 198 | SkPaint::Hinting hinting; |
| 199 | unsigned flags; |
| 200 | } settings[] = { |
| 201 | { SkPaint::kNo_Hinting, 0 }, |
| 202 | { SkPaint::kNo_Hinting, SkPaint::kLinearText_Flag }, |
| 203 | { SkPaint::kNo_Hinting, SkPaint::kSubpixelText_Flag }, |
| 204 | { SkPaint::kSlight_Hinting, 0 }, |
| 205 | { SkPaint::kSlight_Hinting, SkPaint::kLinearText_Flag }, |
| 206 | { SkPaint::kSlight_Hinting, SkPaint::kSubpixelText_Flag }, |
| 207 | { SkPaint::kNormal_Hinting, 0 }, |
| 208 | { SkPaint::kNormal_Hinting, SkPaint::kLinearText_Flag }, |
| 209 | { SkPaint::kNormal_Hinting, SkPaint::kSubpixelText_Flag }, |
| 210 | }; |
| 211 | |
reed@google.com | d074c37 | 2012-07-18 13:45:58 +0000 | [diff] [blame] | 212 | static const struct { |
| 213 | SkScalar fScaleX; |
| 214 | SkScalar fSkewX; |
| 215 | } gScaleRec[] = { |
| 216 | { SK_Scalar1, 0 }, |
| 217 | { SK_Scalar1/2, 0 }, |
| 218 | // these two exercise obliquing (skew) |
| 219 | { SK_Scalar1, -SK_Scalar1/4 }, |
| 220 | { SK_Scalar1/2, -SK_Scalar1/4 }, |
| 221 | }; |
| 222 | |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 223 | SkPaint paint; |
| 224 | char txt[] = "long.text.with.lots.of.dots."; |
| 225 | |
| 226 | for (size_t i = 0; i < SK_ARRAY_COUNT(faces); i++) { |
bungeman@google.com | 9447103 | 2013-02-25 15:55:13 +0000 | [diff] [blame] | 227 | SkAutoTUnref<SkTypeface> face(SkTypeface::CreateFromName(faces[i], SkTypeface::kNormal)); |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 228 | paint.setTypeface(face); |
| 229 | |
| 230 | for (size_t j = 0; j < SK_ARRAY_COUNT(settings); j++) { |
reed@google.com | d074c37 | 2012-07-18 13:45:58 +0000 | [diff] [blame] | 231 | paint.setHinting(settings[j].hinting); |
| 232 | paint.setLinearText((settings[j].flags & SkPaint::kLinearText_Flag) != 0); |
| 233 | paint.setSubpixelText((settings[j].flags & SkPaint::kSubpixelText_Flag) != 0); |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 234 | |
reed@google.com | d074c37 | 2012-07-18 13:45:58 +0000 | [diff] [blame] | 235 | for (size_t k = 0; k < SK_ARRAY_COUNT(gScaleRec); ++k) { |
| 236 | paint.setTextScaleX(gScaleRec[k].fScaleX); |
| 237 | paint.setTextSkewX(gScaleRec[k].fSkewX); |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 238 | |
reed@google.com | d074c37 | 2012-07-18 13:45:58 +0000 | [diff] [blame] | 239 | SkRect bounds; |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 240 | |
reed@google.com | d074c37 | 2012-07-18 13:45:58 +0000 | [diff] [blame] | 241 | // For no hinting and light hinting this should take the |
| 242 | // optimized generateAdvance path. |
| 243 | SkScalar width1 = paint.measureText(txt, strlen(txt)); |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 244 | |
reed@google.com | d074c37 | 2012-07-18 13:45:58 +0000 | [diff] [blame] | 245 | // Requesting the bounds forces a generateMetrics call. |
| 246 | SkScalar width2 = paint.measureText(txt, strlen(txt), &bounds); |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 247 | |
reed@google.com | d074c37 | 2012-07-18 13:45:58 +0000 | [diff] [blame] | 248 | // SkDebugf("Font: %s, generateAdvance: %f, generateMetrics: %f\n", |
| 249 | // faces[i], SkScalarToFloat(width1), SkScalarToFloat(width2)); |
| 250 | |
| 251 | REPORTER_ASSERT(reporter, width1 == width2); |
| 252 | } |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 253 | } |
| 254 | } |
| 255 | } |
| 256 | |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 257 | static void TestFontHost(skiatest::Reporter* reporter) { |
| 258 | test_tables(reporter); |
reed@google.com | ed268bf | 2013-03-11 20:13:36 +0000 | [diff] [blame] | 259 | test_fontstream(reporter); |
bungeman@google.com | 34f1026 | 2012-03-23 18:11:47 +0000 | [diff] [blame] | 260 | test_advances(reporter); |
reed@google.com | 17aa07d | 2012-02-23 14:51:10 +0000 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | // need tests for SkStrSearch |
| 264 | |
| 265 | #include "TestClassDef.h" |
| 266 | DEFINE_TESTCLASS("FontHost", FontHostTestClass, TestFontHost) |