fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 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 "SkPaint.h" |
| 9 | #include "SkPoint.h" |
halcanary | 3377975 | 2015-10-27 14:01:05 -0700 | [diff] [blame^] | 10 | #include "SkTextBlobRunIterator.h" |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 11 | |
| 12 | #include "Test.h" |
| 13 | |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 14 | class TextBlobTester { |
| 15 | public: |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 16 | // This unit test feeds an SkTextBlobBuilder various runs then checks to see if |
| 17 | // the result contains the provided data and merges runs when appropriate. |
| 18 | static void TestBuilder(skiatest::Reporter* reporter) { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 19 | SkTextBlobBuilder builder; |
| 20 | |
| 21 | // empty run set |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 22 | RunBuilderTest(reporter, builder, nullptr, 0, nullptr, 0); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 23 | |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 24 | RunDef set1[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 25 | { 128, SkTextBlob::kDefault_Positioning, 100, 100 }, |
| 26 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 27 | RunBuilderTest(reporter, builder, set1, SK_ARRAY_COUNT(set1), set1, SK_ARRAY_COUNT(set1)); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 28 | |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 29 | RunDef set2[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 30 | { 128, SkTextBlob::kHorizontal_Positioning, 100, 100 }, |
| 31 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 32 | RunBuilderTest(reporter, builder, set2, SK_ARRAY_COUNT(set2), set2, SK_ARRAY_COUNT(set2)); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 33 | |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 34 | RunDef set3[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 35 | { 128, SkTextBlob::kFull_Positioning, 100, 100 }, |
| 36 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 37 | RunBuilderTest(reporter, builder, set3, SK_ARRAY_COUNT(set3), set3, SK_ARRAY_COUNT(set3)); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 38 | |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 39 | RunDef set4[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 40 | { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| 41 | { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| 42 | { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| 43 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 44 | RunBuilderTest(reporter, builder, set4, SK_ARRAY_COUNT(set4), set4, SK_ARRAY_COUNT(set4)); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 45 | |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 46 | RunDef set5[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 47 | { 128, SkTextBlob::kHorizontal_Positioning, 100, 150 }, |
| 48 | { 128, SkTextBlob::kHorizontal_Positioning, 200, 150 }, |
| 49 | { 128, SkTextBlob::kHorizontal_Positioning, 300, 250 }, |
| 50 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 51 | RunDef mergedSet5[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 52 | { 256, SkTextBlob::kHorizontal_Positioning, 0, 150 }, |
| 53 | { 128, SkTextBlob::kHorizontal_Positioning, 0, 250 }, |
| 54 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 55 | RunBuilderTest(reporter, builder, set5, SK_ARRAY_COUNT(set5), mergedSet5, |
| 56 | SK_ARRAY_COUNT(mergedSet5)); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 57 | |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 58 | RunDef set6[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 59 | { 128, SkTextBlob::kFull_Positioning, 100, 100 }, |
| 60 | { 128, SkTextBlob::kFull_Positioning, 200, 200 }, |
| 61 | { 128, SkTextBlob::kFull_Positioning, 300, 300 }, |
| 62 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 63 | RunDef mergedSet6[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 64 | { 384, SkTextBlob::kFull_Positioning, 0, 0 }, |
| 65 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 66 | RunBuilderTest(reporter, builder, set6, SK_ARRAY_COUNT(set6), mergedSet6, |
| 67 | SK_ARRAY_COUNT(mergedSet6)); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 68 | |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 69 | RunDef set7[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 70 | { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| 71 | { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| 72 | { 128, SkTextBlob::kHorizontal_Positioning, 100, 150 }, |
| 73 | { 128, SkTextBlob::kHorizontal_Positioning, 200, 150 }, |
| 74 | { 128, SkTextBlob::kFull_Positioning, 400, 350 }, |
| 75 | { 128, SkTextBlob::kFull_Positioning, 400, 350 }, |
| 76 | { 128, SkTextBlob::kDefault_Positioning, 100, 450 }, |
| 77 | { 128, SkTextBlob::kDefault_Positioning, 100, 450 }, |
| 78 | { 128, SkTextBlob::kHorizontal_Positioning, 100, 550 }, |
| 79 | { 128, SkTextBlob::kHorizontal_Positioning, 200, 650 }, |
| 80 | { 128, SkTextBlob::kFull_Positioning, 400, 750 }, |
| 81 | { 128, SkTextBlob::kFull_Positioning, 400, 850 }, |
| 82 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 83 | RunDef mergedSet7[] = { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 84 | { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| 85 | { 128, SkTextBlob::kDefault_Positioning, 100, 150 }, |
| 86 | { 256, SkTextBlob::kHorizontal_Positioning, 0, 150 }, |
| 87 | { 256, SkTextBlob::kFull_Positioning, 0, 0 }, |
| 88 | { 128, SkTextBlob::kDefault_Positioning, 100, 450 }, |
| 89 | { 128, SkTextBlob::kDefault_Positioning, 100, 450 }, |
| 90 | { 128, SkTextBlob::kHorizontal_Positioning, 0, 550 }, |
| 91 | { 128, SkTextBlob::kHorizontal_Positioning, 0, 650 }, |
| 92 | { 256, SkTextBlob::kFull_Positioning, 0, 0 }, |
| 93 | }; |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 94 | RunBuilderTest(reporter, builder, set7, SK_ARRAY_COUNT(set7), mergedSet7, |
| 95 | SK_ARRAY_COUNT(mergedSet7)); |
| 96 | } |
| 97 | |
| 98 | // This unit test verifies blob bounds computation. |
| 99 | static void TestBounds(skiatest::Reporter* reporter) { |
| 100 | SkTextBlobBuilder builder; |
| 101 | SkPaint font; |
| 102 | font.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| 103 | |
| 104 | // Explicit bounds. |
| 105 | { |
| 106 | SkAutoTUnref<const SkTextBlob> blob(builder.build()); |
| 107 | REPORTER_ASSERT(reporter, blob->bounds().isEmpty()); |
| 108 | } |
| 109 | |
| 110 | { |
| 111 | SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20); |
| 112 | builder.allocRun(font, 16, 0, 0, &r1); |
| 113 | SkAutoTUnref<const SkTextBlob> blob(builder.build()); |
| 114 | REPORTER_ASSERT(reporter, blob->bounds() == r1); |
| 115 | } |
| 116 | |
| 117 | { |
| 118 | SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20); |
| 119 | builder.allocRunPosH(font, 16, 0, &r1); |
| 120 | SkAutoTUnref<const SkTextBlob> blob(builder.build()); |
| 121 | REPORTER_ASSERT(reporter, blob->bounds() == r1); |
| 122 | } |
| 123 | |
| 124 | { |
| 125 | SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20); |
| 126 | builder.allocRunPos(font, 16, &r1); |
| 127 | SkAutoTUnref<const SkTextBlob> blob(builder.build()); |
| 128 | REPORTER_ASSERT(reporter, blob->bounds() == r1); |
| 129 | } |
| 130 | |
| 131 | { |
| 132 | SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20); |
| 133 | SkRect r2 = SkRect::MakeXYWH(15, 20, 50, 50); |
| 134 | SkRect r3 = SkRect::MakeXYWH(0, 5, 10, 5); |
| 135 | |
| 136 | builder.allocRun(font, 16, 0, 0, &r1); |
| 137 | builder.allocRunPosH(font, 16, 0, &r2); |
| 138 | builder.allocRunPos(font, 16, &r3); |
| 139 | |
| 140 | SkAutoTUnref<const SkTextBlob> blob(builder.build()); |
| 141 | REPORTER_ASSERT(reporter, blob->bounds() == SkRect::MakeXYWH(0, 5, 65, 65)); |
| 142 | } |
| 143 | |
| 144 | { |
| 145 | // Verify empty blob bounds after building some non-empty blobs. |
| 146 | SkAutoTUnref<const SkTextBlob> blob(builder.build()); |
| 147 | REPORTER_ASSERT(reporter, blob->bounds().isEmpty()); |
| 148 | } |
| 149 | |
| 150 | // Implicit bounds |
fmalita | 9ae8fe1 | 2015-10-13 08:59:23 -0700 | [diff] [blame] | 151 | |
| 152 | { |
| 153 | // Exercise the empty bounds path, and ensure that RunRecord-aligned pos buffers |
| 154 | // don't trigger asserts (http://crbug.com/542643). |
| 155 | SkPaint p; |
| 156 | p.setTextSize(0); |
fmalita | 0b01da7 | 2015-10-14 08:11:40 -0700 | [diff] [blame] | 157 | p.setTextEncoding(SkPaint::kUTF8_TextEncoding); |
fmalita | 9ae8fe1 | 2015-10-13 08:59:23 -0700 | [diff] [blame] | 158 | |
| 159 | const char* txt = "BOOO"; |
fmalita | 0b01da7 | 2015-10-14 08:11:40 -0700 | [diff] [blame] | 160 | const size_t txtLen = strlen(txt); |
| 161 | const int glyphCount = p.textToGlyphs(txt, txtLen, nullptr); |
| 162 | |
| 163 | p.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| 164 | const SkTextBlobBuilder::RunBuffer& buffer = builder.allocRunPos(p, glyphCount); |
| 165 | |
| 166 | p.setTextEncoding(SkPaint::kUTF8_TextEncoding); |
| 167 | p.textToGlyphs(txt, txtLen, buffer.glyphs); |
| 168 | |
| 169 | memset(buffer.pos, 0, sizeof(SkScalar) * glyphCount * 2); |
fmalita | 9ae8fe1 | 2015-10-13 08:59:23 -0700 | [diff] [blame] | 170 | SkAutoTUnref<const SkTextBlob> blob(builder.build()); |
| 171 | REPORTER_ASSERT(reporter, blob->bounds().isEmpty()); |
| 172 | } |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | private: |
| 176 | struct RunDef { |
| 177 | unsigned count; |
| 178 | SkTextBlob::GlyphPositioning pos; |
| 179 | SkScalar x, y; |
| 180 | }; |
| 181 | |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 182 | static void RunBuilderTest(skiatest::Reporter* reporter, SkTextBlobBuilder& builder, |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 183 | const RunDef in[], unsigned inCount, |
| 184 | const RunDef out[], unsigned outCount) { |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 185 | SkPaint font; |
| 186 | font.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| 187 | |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 188 | unsigned glyphCount = 0; |
| 189 | unsigned posCount = 0; |
| 190 | |
| 191 | for (unsigned i = 0; i < inCount; ++i) { |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 192 | AddRun(font, in[i].count, in[i].pos, SkPoint::Make(in[i].x, in[i].y), builder); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 193 | glyphCount += in[i].count; |
| 194 | posCount += in[i].count * in[i].pos; |
| 195 | } |
| 196 | |
| 197 | SkAutoTUnref<const SkTextBlob> blob(builder.build()); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 198 | |
halcanary | 3377975 | 2015-10-27 14:01:05 -0700 | [diff] [blame^] | 199 | SkTextBlobRunIterator it(blob); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 200 | for (unsigned i = 0; i < outCount; ++i) { |
| 201 | REPORTER_ASSERT(reporter, !it.done()); |
| 202 | REPORTER_ASSERT(reporter, out[i].pos == it.positioning()); |
| 203 | REPORTER_ASSERT(reporter, out[i].count == it.glyphCount()); |
| 204 | if (SkTextBlob::kDefault_Positioning == out[i].pos) { |
| 205 | REPORTER_ASSERT(reporter, out[i].x == it.offset().x()); |
| 206 | REPORTER_ASSERT(reporter, out[i].y == it.offset().y()); |
| 207 | } else if (SkTextBlob::kHorizontal_Positioning == out[i].pos) { |
| 208 | REPORTER_ASSERT(reporter, out[i].y == it.offset().y()); |
| 209 | } |
| 210 | |
| 211 | for (unsigned k = 0; k < it.glyphCount(); ++k) { |
| 212 | REPORTER_ASSERT(reporter, k % 128 == it.glyphs()[k]); |
| 213 | if (SkTextBlob::kHorizontal_Positioning == it.positioning()) { |
| 214 | REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k]); |
| 215 | } else if (SkTextBlob::kFull_Positioning == it.positioning()) { |
| 216 | REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k * 2]); |
| 217 | REPORTER_ASSERT(reporter, -SkIntToScalar(k % 128) == it.pos()[k * 2 + 1]); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | it.next(); |
| 222 | } |
| 223 | |
| 224 | REPORTER_ASSERT(reporter, it.done()); |
| 225 | } |
| 226 | |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 227 | static void AddRun(const SkPaint& font, int count, SkTextBlob::GlyphPositioning pos, |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 228 | const SkPoint& offset, SkTextBlobBuilder& builder, |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 229 | const SkRect* bounds = nullptr) { |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 230 | switch (pos) { |
| 231 | case SkTextBlob::kDefault_Positioning: { |
| 232 | const SkTextBlobBuilder::RunBuffer& rb = builder.allocRun(font, count, offset.x(), |
| 233 | offset.y(), bounds); |
| 234 | for (int i = 0; i < count; ++i) { |
| 235 | rb.glyphs[i] = i; |
| 236 | } |
| 237 | } break; |
| 238 | case SkTextBlob::kHorizontal_Positioning: { |
| 239 | const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPosH(font, count, offset.y(), |
| 240 | bounds); |
| 241 | for (int i = 0; i < count; ++i) { |
| 242 | rb.glyphs[i] = i; |
| 243 | rb.pos[i] = SkIntToScalar(i); |
| 244 | } |
| 245 | } break; |
| 246 | case SkTextBlob::kFull_Positioning: { |
| 247 | const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPos(font, count, bounds); |
| 248 | for (int i = 0; i < count; ++i) { |
| 249 | rb.glyphs[i] = i; |
| 250 | rb.pos[i * 2] = SkIntToScalar(i); |
| 251 | rb.pos[i * 2 + 1] = -SkIntToScalar(i); |
| 252 | } |
| 253 | } break; |
| 254 | default: |
| 255 | SkFAIL("unhandled positioning value"); |
| 256 | } |
| 257 | } |
| 258 | }; |
| 259 | |
| 260 | DEF_TEST(TextBlob_builder, reporter) { |
fmalita | 51bf957 | 2014-08-22 07:50:45 -0700 | [diff] [blame] | 261 | TextBlobTester::TestBuilder(reporter); |
| 262 | TextBlobTester::TestBounds(reporter); |
fmalita | c6765d6 | 2014-08-21 15:03:04 -0700 | [diff] [blame] | 263 | } |