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 "include/core/SkPaint.h"
9 #include "include/core/SkPoint.h"
10 #include "include/core/SkSerialProcs.h"
11 #include "include/core/SkTypeface.h"
12 #include "include/private/SkTo.h"
13 #include "src/core/SkTextBlobPriv.h"
14
15 #include "tests/Test.h"
16 #include "tools/ToolUtils.h"
17
18 class TextBlobTester {
19 public:
20 // This unit test feeds an SkTextBlobBuilder various runs then checks to see if
21 // the result contains the provided data and merges runs when appropriate.
TestBuilder(skiatest::Reporter * reporter)22 static void TestBuilder(skiatest::Reporter* reporter) {
23 SkTextBlobBuilder builder;
24
25 // empty run set
26 RunBuilderTest(reporter, builder, nullptr, 0, nullptr, 0);
27
28 RunDef set1[] = {
29 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 100 },
30 };
31 RunBuilderTest(reporter, builder, set1, SK_ARRAY_COUNT(set1), set1, SK_ARRAY_COUNT(set1));
32
33 RunDef set2[] = {
34 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 100, 100 },
35 };
36 RunBuilderTest(reporter, builder, set2, SK_ARRAY_COUNT(set2), set2, SK_ARRAY_COUNT(set2));
37
38 RunDef set3[] = {
39 { 128, SkTextBlobRunIterator::kFull_Positioning, 100, 100 },
40 };
41 RunBuilderTest(reporter, builder, set3, SK_ARRAY_COUNT(set3), set3, SK_ARRAY_COUNT(set3));
42
43 RunDef set4[] = {
44 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 150 },
45 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 150 },
46 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 150 },
47 };
48 RunBuilderTest(reporter, builder, set4, SK_ARRAY_COUNT(set4), set4, SK_ARRAY_COUNT(set4));
49
50 RunDef set5[] = {
51 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 100, 150 },
52 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 200, 150 },
53 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 300, 250 },
54 };
55 RunDef mergedSet5[] = {
56 { 256, SkTextBlobRunIterator::kHorizontal_Positioning, 0, 150 },
57 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 0, 250 },
58 };
59 RunBuilderTest(reporter, builder, set5, SK_ARRAY_COUNT(set5), mergedSet5,
60 SK_ARRAY_COUNT(mergedSet5));
61
62 RunDef set6[] = {
63 { 128, SkTextBlobRunIterator::kFull_Positioning, 100, 100 },
64 { 128, SkTextBlobRunIterator::kFull_Positioning, 200, 200 },
65 { 128, SkTextBlobRunIterator::kFull_Positioning, 300, 300 },
66 };
67 RunDef mergedSet6[] = {
68 { 384, SkTextBlobRunIterator::kFull_Positioning, 0, 0 },
69 };
70 RunBuilderTest(reporter, builder, set6, SK_ARRAY_COUNT(set6), mergedSet6,
71 SK_ARRAY_COUNT(mergedSet6));
72
73 RunDef set7[] = {
74 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 150 },
75 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 150 },
76 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 100, 150 },
77 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 200, 150 },
78 { 128, SkTextBlobRunIterator::kFull_Positioning, 400, 350 },
79 { 128, SkTextBlobRunIterator::kFull_Positioning, 400, 350 },
80 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 450 },
81 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 450 },
82 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 100, 550 },
83 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 200, 650 },
84 { 128, SkTextBlobRunIterator::kFull_Positioning, 400, 750 },
85 { 128, SkTextBlobRunIterator::kFull_Positioning, 400, 850 },
86 };
87 RunDef mergedSet7[] = {
88 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 150 },
89 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 150 },
90 { 256, SkTextBlobRunIterator::kHorizontal_Positioning, 0, 150 },
91 { 256, SkTextBlobRunIterator::kFull_Positioning, 0, 0 },
92 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 450 },
93 { 128, SkTextBlobRunIterator::kDefault_Positioning, 100, 450 },
94 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 0, 550 },
95 { 128, SkTextBlobRunIterator::kHorizontal_Positioning, 0, 650 },
96 { 256, SkTextBlobRunIterator::kFull_Positioning, 0, 0 },
97 };
98 RunBuilderTest(reporter, builder, set7, SK_ARRAY_COUNT(set7), mergedSet7,
99 SK_ARRAY_COUNT(mergedSet7));
100 }
101
102 // This unit test verifies blob bounds computation.
TestBounds(skiatest::Reporter * reporter)103 static void TestBounds(skiatest::Reporter* reporter) {
104 SkTextBlobBuilder builder;
105 SkFont font;
106
107 // Explicit bounds.
108 {
109 sk_sp<SkTextBlob> blob(builder.make());
110 REPORTER_ASSERT(reporter, !blob);
111 }
112
113 {
114 SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
115 builder.allocRun(font, 16, 0, 0, &r1);
116 sk_sp<SkTextBlob> blob(builder.make());
117 REPORTER_ASSERT(reporter, blob->bounds() == r1);
118 }
119
120 {
121 SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
122 builder.allocRunPosH(font, 16, 0, &r1);
123 sk_sp<SkTextBlob> blob(builder.make());
124 REPORTER_ASSERT(reporter, blob->bounds() == r1);
125 }
126
127 {
128 SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
129 builder.allocRunPos(font, 16, &r1);
130 sk_sp<SkTextBlob> blob(builder.make());
131 REPORTER_ASSERT(reporter, blob->bounds() == r1);
132 }
133
134 {
135 SkRect r1 = SkRect::MakeXYWH(10, 10, 20, 20);
136 SkRect r2 = SkRect::MakeXYWH(15, 20, 50, 50);
137 SkRect r3 = SkRect::MakeXYWH(0, 5, 10, 5);
138
139 builder.allocRun(font, 16, 0, 0, &r1);
140 builder.allocRunPosH(font, 16, 0, &r2);
141 builder.allocRunPos(font, 16, &r3);
142
143 sk_sp<SkTextBlob> blob(builder.make());
144 REPORTER_ASSERT(reporter, blob->bounds() == SkRect::MakeXYWH(0, 5, 65, 65));
145 }
146
147 {
148 sk_sp<SkTextBlob> blob(builder.make());
149 REPORTER_ASSERT(reporter, !blob);
150 }
151
152 // Implicit bounds
153
154 {
155 // Exercise the empty bounds path, and ensure that RunRecord-aligned pos buffers
156 // don't trigger asserts (http://crbug.com/542643).
157 font.setSize(0);
158
159 const char* txt = "BOOO";
160 const size_t txtLen = strlen(txt);
161 const int glyphCount = font.countText(txt, txtLen, SkTextEncoding::kUTF8);
162 const SkTextBlobBuilder::RunBuffer& buffer = builder.allocRunPos(font, glyphCount);
163
164 font.textToGlyphs(txt, txtLen, SkTextEncoding::kUTF8, buffer.glyphs, glyphCount);
165
166 memset(buffer.pos, 0, sizeof(SkScalar) * glyphCount * 2);
167 sk_sp<SkTextBlob> blob(builder.make());
168 REPORTER_ASSERT(reporter, blob->bounds().isEmpty());
169 }
170 }
171
172 // Verify that text-related properties are captured in run paints.
TestPaintProps(skiatest::Reporter * reporter)173 static void TestPaintProps(skiatest::Reporter* reporter) {
174 SkFont font;
175 // Kitchen sink font.
176 font.setSize(42);
177 font.setScaleX(4.2f);
178 font.setTypeface(ToolUtils::create_portable_typeface());
179 font.setSkewX(0.42f);
180 font.setHinting(SkFontHinting::kFull);
181 font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
182 font.setEmbolden(true);
183 font.setLinearMetrics(true);
184 font.setSubpixel(true);
185 font.setEmbeddedBitmaps(true);
186 font.setForceAutoHinting(true);
187
188 // Ensure we didn't pick default values by mistake.
189 SkFont defaultFont;
190 REPORTER_ASSERT(reporter, defaultFont.getSize() != font.getSize());
191 REPORTER_ASSERT(reporter, defaultFont.getScaleX() != font.getScaleX());
192 REPORTER_ASSERT(reporter, defaultFont.getTypefaceOrDefault() != font.getTypefaceOrDefault());
193 REPORTER_ASSERT(reporter, defaultFont.getSkewX() != font.getSkewX());
194 REPORTER_ASSERT(reporter, defaultFont.getHinting() != font.getHinting());
195 REPORTER_ASSERT(reporter, defaultFont.getEdging() != font.getEdging());
196 REPORTER_ASSERT(reporter, defaultFont.isEmbolden() != font.isEmbolden());
197 REPORTER_ASSERT(reporter, defaultFont.isLinearMetrics() != font.isLinearMetrics());
198 REPORTER_ASSERT(reporter, defaultFont.isSubpixel() != font.isSubpixel());
199 REPORTER_ASSERT(reporter,
200 defaultFont.isEmbeddedBitmaps() != font.isEmbeddedBitmaps());
201 REPORTER_ASSERT(reporter, defaultFont.isForceAutoHinting() != font.isForceAutoHinting());
202
203 SkTextBlobBuilder builder;
204 AddRun(font, 1, SkTextBlobRunIterator::kDefault_Positioning, SkPoint::Make(0, 0), builder);
205 AddRun(font, 1, SkTextBlobRunIterator::kHorizontal_Positioning, SkPoint::Make(0, 0),
206 builder);
207 AddRun(font, 1, SkTextBlobRunIterator::kFull_Positioning, SkPoint::Make(0, 0), builder);
208 sk_sp<SkTextBlob> blob(builder.make());
209
210 SkTextBlobRunIterator it(blob.get());
211 while (!it.done()) {
212 REPORTER_ASSERT(reporter, it.font() == font);
213 it.next();
214 }
215
216 }
217
218 private:
219 struct RunDef {
220 unsigned count;
221 SkTextBlobRunIterator::GlyphPositioning pos;
222 SkScalar x, y;
223 };
224
RunBuilderTest(skiatest::Reporter * reporter,SkTextBlobBuilder & builder,const RunDef in[],unsigned inCount,const RunDef out[],unsigned outCount)225 static void RunBuilderTest(skiatest::Reporter* reporter, SkTextBlobBuilder& builder,
226 const RunDef in[], unsigned inCount,
227 const RunDef out[], unsigned outCount) {
228 SkFont font;
229
230 for (unsigned i = 0; i < inCount; ++i) {
231 AddRun(font, in[i].count, in[i].pos, SkPoint::Make(in[i].x, in[i].y), builder);
232 }
233
234 sk_sp<SkTextBlob> blob(builder.make());
235 REPORTER_ASSERT(reporter, (inCount > 0) == SkToBool(blob));
236 if (!blob) {
237 return;
238 }
239
240 SkTextBlobRunIterator it(blob.get());
241 for (unsigned i = 0; i < outCount; ++i) {
242 REPORTER_ASSERT(reporter, !it.done());
243 REPORTER_ASSERT(reporter, out[i].pos == it.positioning());
244 REPORTER_ASSERT(reporter, out[i].count == it.glyphCount());
245 if (SkTextBlobRunIterator::kDefault_Positioning == out[i].pos) {
246 REPORTER_ASSERT(reporter, out[i].x == it.offset().x());
247 REPORTER_ASSERT(reporter, out[i].y == it.offset().y());
248 } else if (SkTextBlobRunIterator::kHorizontal_Positioning == out[i].pos) {
249 REPORTER_ASSERT(reporter, out[i].y == it.offset().y());
250 }
251
252 for (unsigned k = 0; k < it.glyphCount(); ++k) {
253 REPORTER_ASSERT(reporter, k % 128 == it.glyphs()[k]);
254 if (SkTextBlobRunIterator::kHorizontal_Positioning == it.positioning()) {
255 REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k]);
256 } else if (SkTextBlobRunIterator::kFull_Positioning == it.positioning()) {
257 REPORTER_ASSERT(reporter, SkIntToScalar(k % 128) == it.pos()[k * 2]);
258 REPORTER_ASSERT(reporter, -SkIntToScalar(k % 128) == it.pos()[k * 2 + 1]);
259 }
260 }
261
262 it.next();
263 }
264
265 REPORTER_ASSERT(reporter, it.done());
266 }
267
AddRun(const SkFont & font,int count,SkTextBlobRunIterator::GlyphPositioning pos,const SkPoint & offset,SkTextBlobBuilder & builder,const SkRect * bounds=nullptr)268 static void AddRun(const SkFont& font, int count, SkTextBlobRunIterator::GlyphPositioning pos,
269 const SkPoint& offset, SkTextBlobBuilder& builder,
270 const SkRect* bounds = nullptr) {
271 switch (pos) {
272 case SkTextBlobRunIterator::kDefault_Positioning: {
273 const SkTextBlobBuilder::RunBuffer& rb = builder.allocRun(font, count, offset.x(),
274 offset.y(), bounds);
275 for (int i = 0; i < count; ++i) {
276 rb.glyphs[i] = i;
277 }
278 } break;
279 case SkTextBlobRunIterator::kHorizontal_Positioning: {
280 const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPosH(font, count, offset.y(),
281 bounds);
282 for (int i = 0; i < count; ++i) {
283 rb.glyphs[i] = i;
284 rb.pos[i] = SkIntToScalar(i);
285 }
286 } break;
287 case SkTextBlobRunIterator::kFull_Positioning: {
288 const SkTextBlobBuilder::RunBuffer& rb = builder.allocRunPos(font, count, bounds);
289 for (int i = 0; i < count; ++i) {
290 rb.glyphs[i] = i;
291 rb.pos[i * 2] = SkIntToScalar(i);
292 rb.pos[i * 2 + 1] = -SkIntToScalar(i);
293 }
294 } break;
295 default:
296 SK_ABORT("unhandled positioning value");
297 }
298 }
299 };
300
DEF_TEST(TextBlob_builder,reporter)301 DEF_TEST(TextBlob_builder, reporter) {
302 TextBlobTester::TestBuilder(reporter);
303 TextBlobTester::TestBounds(reporter);
304 }
305
DEF_TEST(TextBlob_paint,reporter)306 DEF_TEST(TextBlob_paint, reporter) {
307 TextBlobTester::TestPaintProps(reporter);
308 }
309
DEF_TEST(TextBlob_extended,reporter)310 DEF_TEST(TextBlob_extended, reporter) {
311 SkTextBlobBuilder textBlobBuilder;
312 SkFont font;
313 const char text1[] = "Foo";
314 const char text2[] = "Bar";
315
316 int glyphCount = font.countText(text1, strlen(text1), SkTextEncoding::kUTF8);
317 SkAutoTMalloc<uint16_t> glyphs(glyphCount);
318 (void)font.textToGlyphs(text1, strlen(text1), SkTextEncoding::kUTF8, glyphs.get(), glyphCount);
319
320 auto run = textBlobBuilder.allocRunText(font, glyphCount, 0, 0, SkToInt(strlen(text2)));
321 memcpy(run.glyphs, glyphs.get(), sizeof(uint16_t) * glyphCount);
322 memcpy(run.utf8text, text2, strlen(text2));
323 for (int i = 0; i < glyphCount; ++i) {
324 run.clusters[i] = std::min(SkToU32(i), SkToU32(strlen(text2)));
325 }
326 sk_sp<SkTextBlob> blob(textBlobBuilder.make());
327 REPORTER_ASSERT(reporter, blob);
328
329 for (SkTextBlobRunIterator it(blob.get()); !it.done(); it.next()) {
330 REPORTER_ASSERT(reporter, it.glyphCount() == (uint32_t)glyphCount);
331 for (uint32_t i = 0; i < it.glyphCount(); ++i) {
332 REPORTER_ASSERT(reporter, it.glyphs()[i] == glyphs[i]);
333 }
334 REPORTER_ASSERT(reporter, SkTextBlobRunIterator::kDefault_Positioning == it.positioning());
335 REPORTER_ASSERT(reporter, (SkPoint{0.0f, 0.0f}) == it.offset());
336 REPORTER_ASSERT(reporter, it.textSize() > 0);
337 REPORTER_ASSERT(reporter, it.clusters());
338 for (uint32_t i = 0; i < it.glyphCount(); ++i) {
339 REPORTER_ASSERT(reporter, i == it.clusters()[i]);
340 }
341 REPORTER_ASSERT(reporter, 0 == strncmp(text2, it.text(), it.textSize()));
342 }
343 }
344
345 ///////////////////////////////////////////////////////////////////////////////////////////////////
346 #include "include/core/SkCanvas.h"
347 #include "include/core/SkSurface.h"
348 #include "include/private/SkTArray.h"
349
add_run(SkTextBlobBuilder * builder,const char text[],SkScalar x,SkScalar y,sk_sp<SkTypeface> tf)350 static void add_run(SkTextBlobBuilder* builder, const char text[], SkScalar x, SkScalar y,
351 sk_sp<SkTypeface> tf) {
352 SkFont font;
353 font.setEdging(SkFont::Edging::kAntiAlias);
354 font.setSubpixel(true);
355 font.setSize(16);
356 font.setTypeface(tf);
357
358 int glyphCount = font.countText(text, strlen(text), SkTextEncoding::kUTF8);
359
360 SkTextBlobBuilder::RunBuffer buffer = builder->allocRun(font, glyphCount, x, y);
361
362 (void)font.textToGlyphs(text, strlen(text), SkTextEncoding::kUTF8, buffer.glyphs, glyphCount);
363 }
364
render(const SkTextBlob * blob)365 static sk_sp<SkImage> render(const SkTextBlob* blob) {
366 auto surf = SkSurface::MakeRasterN32Premul(SkScalarRoundToInt(blob->bounds().width()),
367 SkScalarRoundToInt(blob->bounds().height()));
368 if (!surf) {
369 return nullptr; // bounds are empty?
370 }
371 surf->getCanvas()->clear(SK_ColorWHITE);
372 surf->getCanvas()->drawTextBlob(blob, -blob->bounds().left(), -blob->bounds().top(), SkPaint());
373 return surf->makeImageSnapshot();
374 }
375
SerializeTypeface(SkTypeface * tf,void * ctx)376 static sk_sp<SkData> SerializeTypeface(SkTypeface* tf, void* ctx) {
377 auto array = (SkTArray<sk_sp<SkTypeface>>*)ctx;
378 const size_t idx = array->size();
379 array->emplace_back(sk_ref_sp(tf));
380 // In this test, we are deserializing on the same machine, so we don't worry about endianness.
381 return SkData::MakeWithCopy(&idx, sizeof(idx));
382 }
383
DeserializeTypeface(const void * data,size_t length,void * ctx)384 static sk_sp<SkTypeface> DeserializeTypeface(const void* data, size_t length, void* ctx) {
385 auto array = (SkTArray<sk_sp<SkTypeface>>*)ctx;
386 if (length != sizeof(size_t)) {
387 SkASSERT(false);
388 return nullptr;
389 }
390 size_t idx = *reinterpret_cast<const size_t*>(data);
391 if (idx >= array->size()) {
392 SkASSERT(false);
393 return nullptr;
394 }
395 return (*array)[idx];
396 }
397
398 /*
399 * Build a blob with more than one typeface.
400 * Draw it into an offscreen,
401 * then serialize and deserialize,
402 * Then draw the new instance and assert it draws the same as the original.
403 */
DEF_TEST(TextBlob_serialize,reporter)404 DEF_TEST(TextBlob_serialize, reporter) {
405 sk_sp<SkTextBlob> blob0 = []() {
406 sk_sp<SkTypeface> tf = SkTypeface::MakeFromName(nullptr, SkFontStyle::BoldItalic());
407
408 SkTextBlobBuilder builder;
409 add_run(&builder, "Hello", 10, 20, nullptr); // don't flatten a typeface
410 add_run(&builder, "World", 10, 40, tf); // do flatten this typeface
411 return builder.make();
412 }();
413
414 SkTArray<sk_sp<SkTypeface>> array;
415 SkSerialProcs serializeProcs;
416 serializeProcs.fTypefaceProc = &SerializeTypeface;
417 serializeProcs.fTypefaceCtx = (void*) &array;
418 sk_sp<SkData> data = blob0->serialize(serializeProcs);
419 REPORTER_ASSERT(reporter, array.count() == 1);
420 SkDeserialProcs deserializeProcs;
421 deserializeProcs.fTypefaceProc = &DeserializeTypeface;
422 deserializeProcs.fTypefaceCtx = (void*) &array;
423 sk_sp<SkTextBlob> blob1 = SkTextBlob::Deserialize(data->data(), data->size(), deserializeProcs);
424
425 sk_sp<SkImage> img0 = render(blob0.get());
426 sk_sp<SkImage> img1 = render(blob1.get());
427 if (img0 && img1) {
428 REPORTER_ASSERT(reporter, ToolUtils::equal_pixels(img0.get(), img1.get()));
429 }
430 }
431
DEF_TEST(TextBlob_MakeAsDrawText,reporter)432 DEF_TEST(TextBlob_MakeAsDrawText, reporter) {
433 const char text[] = "Hello";
434 auto blob = SkTextBlob::MakeFromString(text, SkFont(), SkTextEncoding::kUTF8);
435
436 int runs = 0;
437 for(SkTextBlobRunIterator it(blob.get()); !it.done(); it.next()) {
438 REPORTER_ASSERT(reporter, it.glyphCount() == strlen(text));
439 REPORTER_ASSERT(reporter, it.positioning() == SkTextBlobRunIterator::kFull_Positioning);
440 runs += 1;
441 }
442 REPORTER_ASSERT(reporter, runs == 1);
443
444 }
445
DEF_TEST(TextBlob_iter,reporter)446 DEF_TEST(TextBlob_iter, reporter) {
447 sk_sp<SkTypeface> tf = SkTypeface::MakeFromName(nullptr, SkFontStyle::BoldItalic());
448
449 SkTextBlobBuilder builder;
450 add_run(&builder, "Hello", 10, 20, nullptr);
451 add_run(&builder, "World", 10, 40, tf);
452 auto blob = builder.make();
453
454 SkTextBlob::Iter::Run expected[] = {
455 { nullptr, 5, nullptr },
456 { tf.get(), 5, nullptr },
457 };
458
459 SkTextBlob::Iter iter(*blob);
460 SkTextBlob::Iter::Run run;
461 for (auto exp : expected) {
462 REPORTER_ASSERT(reporter, iter.next(&run));
463 REPORTER_ASSERT(reporter, run.fTypeface == exp.fTypeface);
464 REPORTER_ASSERT(reporter, run.fGlyphCount == exp.fGlyphCount);
465 for (int i = 0; i < run.fGlyphCount; ++i) {
466 REPORTER_ASSERT(reporter, run.fGlyphIndices[i] != 0);
467 }
468 }
469 REPORTER_ASSERT(reporter, !iter.next(&run)); // we're done
470
471 SkTextBlob::Iter iter2(*blob);
472 REPORTER_ASSERT(reporter, iter2.next(&run));
473 // Hello should have the same glyph repeated for the 'l'
474 REPORTER_ASSERT(reporter, run.fGlyphIndices[2] == run.fGlyphIndices[3]);
475 }
476
DEF_TEST(TextBlob_getIntercepts,reporter)477 DEF_TEST(TextBlob_getIntercepts, reporter) {
478 SkFont font;
479 font.setSize(16);
480
481 SkPoint lowPos[1] = { SkPoint::Make(0, 5) };
482 SkPoint highPos[1] = { SkPoint::Make(0, -8) };
483 SkPoint zeroPos[1] = { SkPoint::Make(0, 0) };
484
485 // 'x' sitting on baseline
486 auto blobZeroX = SkTextBlob::MakeFromPosText("x", 1, zeroPos, font);
487 // 'x' lowered to intersect baseline
488 auto blobLowX = SkTextBlob::MakeFromPosText("x", 1, lowPos, font);
489 // 'y' sitting on baseline
490 auto blobZeroY = SkTextBlob::MakeFromPosText("y", 1, zeroPos, font);
491 // 'y' raised to not intersect baseline
492 auto blobHighY = SkTextBlob::MakeFromPosText("y", 1, highPos, font);
493
494 // bounds right below baseline
495 SkScalar bounds[2] = { 1, 2 };
496
497 // 'x' on baseline should not intersect
498 REPORTER_ASSERT(reporter, blobZeroX->getIntercepts(bounds, nullptr) == 0);
499 // lowered 'x' should intersect
500 REPORTER_ASSERT(reporter, blobLowX->getIntercepts(bounds, nullptr) == 2);
501 // 'y' on baseline should intersect
502 REPORTER_ASSERT(reporter, blobZeroY->getIntercepts(bounds, nullptr) == 2);
503 // raised 'y' should not intersect
504 REPORTER_ASSERT(reporter, blobHighY->getIntercepts(bounds, nullptr) == 0);
505 }
506