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Unified Diff: third_party/WebKit/Source/platform/fonts/shaping/HarfBuzzShaperTest.cpp

Issue 2740083002: Add support for shaper-driven line breaking to HarfBuzzShaper (Closed)
Patch Set: Try to fix test failures Created 3 years, 9 months ago
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Index: third_party/WebKit/Source/platform/fonts/shaping/HarfBuzzShaperTest.cpp
diff --git a/third_party/WebKit/Source/platform/fonts/shaping/HarfBuzzShaperTest.cpp b/third_party/WebKit/Source/platform/fonts/shaping/HarfBuzzShaperTest.cpp
index 12f0c6e36bcb21aba4c017e61a2fd8e93fb241a5..0a537e1cc96136965aa39ffa50bad634cf80053a 100644
--- a/third_party/WebKit/Source/platform/fonts/shaping/HarfBuzzShaperTest.cpp
+++ b/third_party/WebKit/Source/platform/fonts/shaping/HarfBuzzShaperTest.cpp
@@ -4,13 +4,15 @@
#include "platform/fonts/shaping/HarfBuzzShaper.h"
+#include <unicode/uscript.h>
#include "platform/fonts/Font.h"
#include "platform/fonts/FontCache.h"
+#include "platform/fonts/shaping/ShapeResultInlineHeaders.h"
#include "platform/fonts/shaping/ShapeResultTestInfo.h"
+#include "platform/text/TextBreakIterator.h"
#include "platform/text/TextRun.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "wtf/Vector.h"
-#include <unicode/uscript.h>
namespace blink {
@@ -46,7 +48,7 @@ TEST_F(HarfBuzzShaperTest, ResolveCandidateRunsLatin) {
HarfBuzzShaper shaper(latinCommon.characters16(), 8);
RefPtr<ShapeResult> result = shaper.shape(&font, TextDirection::kLtr);
- ASSERT_EQ(1u, testInfo(result)->numberOfRunsForTesting());
+ EXPECT_EQ(1u, testInfo(result)->numberOfRunsForTesting());
ASSERT_TRUE(
testInfo(result)->runInfoForTesting(0, startIndex, numGlyphs, script));
EXPECT_EQ(0u, startIndex);
@@ -59,7 +61,7 @@ TEST_F(HarfBuzzShaperTest, ResolveCandidateRunsLeadingCommon) {
HarfBuzzShaper shaper(leadingCommon.characters16(), 8);
RefPtr<ShapeResult> result = shaper.shape(&font, TextDirection::kLtr);
- ASSERT_EQ(1u, testInfo(result)->numberOfRunsForTesting());
+ EXPECT_EQ(1u, testInfo(result)->numberOfRunsForTesting());
ASSERT_TRUE(
testInfo(result)->runInfoForTesting(0, startIndex, numGlyphs, script));
EXPECT_EQ(0u, startIndex);
@@ -112,7 +114,7 @@ TEST_F(HarfBuzzShaperTest, ResolveCandidateRunsDevanagariCommon) {
HarfBuzzShaper shaper(devanagariCommonLatin.characters16(), 6);
RefPtr<ShapeResult> result = shaper.shape(&font, TextDirection::kLtr);
- ASSERT_EQ(2u, testInfo(result)->numberOfRunsForTesting());
+ EXPECT_EQ(2u, testInfo(result)->numberOfRunsForTesting());
ASSERT_TRUE(
testInfo(result)->runInfoForTesting(0, startIndex, numGlyphs, script));
EXPECT_EQ(0u, startIndex);
@@ -132,7 +134,7 @@ TEST_F(HarfBuzzShaperTest, ResolveCandidateRunsDevanagariCommonLatinCommon) {
HarfBuzzShaper shaper(devanagariCommonLatinString, 7);
RefPtr<ShapeResult> result = shaper.shape(&font, TextDirection::kLtr);
- ASSERT_EQ(3u, testInfo(result)->numberOfRunsForTesting());
+ EXPECT_EQ(3u, testInfo(result)->numberOfRunsForTesting());
ASSERT_TRUE(
testInfo(result)->runInfoForTesting(0, startIndex, numGlyphs, script));
EXPECT_EQ(0u, startIndex);
@@ -157,7 +159,7 @@ TEST_F(HarfBuzzShaperTest, ResolveCandidateRunsArabicThaiHanLatin) {
HarfBuzzShaper shaper(mixedString, 6);
RefPtr<ShapeResult> result = shaper.shape(&font, TextDirection::kLtr);
- ASSERT_EQ(4u, testInfo(result)->numberOfRunsForTesting());
+ EXPECT_EQ(4u, testInfo(result)->numberOfRunsForTesting());
ASSERT_TRUE(
testInfo(result)->runInfoForTesting(0, startIndex, numGlyphs, script));
EXPECT_EQ(0u, startIndex);
@@ -187,12 +189,12 @@ TEST_F(HarfBuzzShaperTest, ResolveCandidateRunsArabicThaiHanLatinTwice) {
UChar mixedString[] = {0x628, 0x64A, 0x629, 0xE20, 0x65E5, 0x62};
HarfBuzzShaper shaper(mixedString, 6);
RefPtr<ShapeResult> result = shaper.shape(&font, TextDirection::kLtr);
- ASSERT_EQ(4u, testInfo(result)->numberOfRunsForTesting());
+ EXPECT_EQ(4u, testInfo(result)->numberOfRunsForTesting());
// Shape again on the same shape object and check the number of runs.
// Should be equal if no state was retained between shape calls.
RefPtr<ShapeResult> result2 = shaper.shape(&font, TextDirection::kLtr);
- ASSERT_EQ(4u, testInfo(result2)->numberOfRunsForTesting());
+ EXPECT_EQ(4u, testInfo(result2)->numberOfRunsForTesting());
}
TEST_F(HarfBuzzShaperTest, ResolveCandidateRunsArabic) {
@@ -200,7 +202,7 @@ TEST_F(HarfBuzzShaperTest, ResolveCandidateRunsArabic) {
HarfBuzzShaper shaper(arabicString, 3);
RefPtr<ShapeResult> result = shaper.shape(&font, TextDirection::kRtl);
- ASSERT_EQ(1u, testInfo(result)->numberOfRunsForTesting());
+ EXPECT_EQ(1u, testInfo(result)->numberOfRunsForTesting());
ASSERT_TRUE(
testInfo(result)->runInfoForTesting(0, startIndex, numGlyphs, script));
EXPECT_EQ(0u, startIndex);
@@ -274,7 +276,7 @@ TEST_F(HarfBuzzShaperTest, PositionForOffsetLatin) {
RefPtr<ShapeResult> first = shaper.shape(&font, direction, 0, 5); // Hello
RefPtr<ShapeResult> second = shaper.shape(&font, direction, 6, 11); // World
- ASSERT_EQ(0.0f, result->positionForOffset(0));
+ EXPECT_EQ(0.0f, result->positionForOffset(0));
ASSERT_NEAR(first->width(), result->positionForOffset(5), 1);
ASSERT_NEAR(second->width(),
result->positionForOffset(11) - result->positionForOffset(6), 1);
@@ -288,7 +290,7 @@ TEST_F(HarfBuzzShaperTest, PositionForOffsetArabic) {
HarfBuzzShaper shaper(arabicString, 3);
RefPtr<ShapeResult> result = shaper.shape(&font, direction);
- ASSERT_EQ(0.0f, result->positionForOffset(3));
+ EXPECT_EQ(0.0f, result->positionForOffset(3));
ASSERT_NEAR(result->width(), result->positionForOffset(0), 0.1);
}
@@ -300,21 +302,21 @@ TEST_F(HarfBuzzShaperTest, OffsetForPositionMatchesPositionForOffsetLatin) {
RefPtr<ShapeResult> result = shaper.shape(&font, direction);
// Last argument is includePartialGlyphs
- ASSERT_EQ(0u, result->offsetForPosition(result->positionForOffset(0), true));
- ASSERT_EQ(1u, result->offsetForPosition(result->positionForOffset(1), true));
- ASSERT_EQ(2u, result->offsetForPosition(result->positionForOffset(2), true));
- ASSERT_EQ(3u, result->offsetForPosition(result->positionForOffset(3), true));
- ASSERT_EQ(4u, result->offsetForPosition(result->positionForOffset(4), true));
- ASSERT_EQ(5u, result->offsetForPosition(result->positionForOffset(5), true));
- ASSERT_EQ(6u, result->offsetForPosition(result->positionForOffset(6), true));
- ASSERT_EQ(7u, result->offsetForPosition(result->positionForOffset(7), true));
- ASSERT_EQ(8u, result->offsetForPosition(result->positionForOffset(8), true));
- ASSERT_EQ(9u, result->offsetForPosition(result->positionForOffset(9), true));
- ASSERT_EQ(10u,
+ EXPECT_EQ(0u, result->offsetForPosition(result->positionForOffset(0), true));
+ EXPECT_EQ(1u, result->offsetForPosition(result->positionForOffset(1), true));
+ EXPECT_EQ(2u, result->offsetForPosition(result->positionForOffset(2), true));
+ EXPECT_EQ(3u, result->offsetForPosition(result->positionForOffset(3), true));
+ EXPECT_EQ(4u, result->offsetForPosition(result->positionForOffset(4), true));
+ EXPECT_EQ(5u, result->offsetForPosition(result->positionForOffset(5), true));
+ EXPECT_EQ(6u, result->offsetForPosition(result->positionForOffset(6), true));
+ EXPECT_EQ(7u, result->offsetForPosition(result->positionForOffset(7), true));
+ EXPECT_EQ(8u, result->offsetForPosition(result->positionForOffset(8), true));
+ EXPECT_EQ(9u, result->offsetForPosition(result->positionForOffset(9), true));
+ EXPECT_EQ(10u,
result->offsetForPosition(result->positionForOffset(10), true));
- ASSERT_EQ(11u,
+ EXPECT_EQ(11u,
result->offsetForPosition(result->positionForOffset(11), true));
- ASSERT_EQ(12u,
+ EXPECT_EQ(12u,
result->offsetForPosition(result->positionForOffset(12), true));
}
@@ -326,10 +328,10 @@ TEST_F(HarfBuzzShaperTest, OffsetForPositionMatchesPositionForOffsetArabic) {
RefPtr<ShapeResult> result = shaper.shape(&font, direction);
// Last argument is includePartialGlyphs
- ASSERT_EQ(0u, result->offsetForPosition(result->positionForOffset(0), true));
- ASSERT_EQ(1u, result->offsetForPosition(result->positionForOffset(1), true));
- ASSERT_EQ(2u, result->offsetForPosition(result->positionForOffset(2), true));
- ASSERT_EQ(3u, result->offsetForPosition(result->positionForOffset(3), true));
+ EXPECT_EQ(0u, result->offsetForPosition(result->positionForOffset(0), true));
+ EXPECT_EQ(1u, result->offsetForPosition(result->positionForOffset(1), true));
+ EXPECT_EQ(2u, result->offsetForPosition(result->positionForOffset(2), true));
+ EXPECT_EQ(3u, result->offsetForPosition(result->positionForOffset(3), true));
}
TEST_F(HarfBuzzShaperTest, OffsetForPositionMatchesPositionForOffsetMixed) {
@@ -338,13 +340,223 @@ TEST_F(HarfBuzzShaperTest, OffsetForPositionMatchesPositionForOffsetMixed) {
RefPtr<ShapeResult> result = shaper.shape(&font, TextDirection::kLtr);
// Last argument is includePartialGlyphs
- ASSERT_EQ(0u, result->offsetForPosition(result->positionForOffset(0), true));
- ASSERT_EQ(1u, result->offsetForPosition(result->positionForOffset(1), true));
- ASSERT_EQ(2u, result->offsetForPosition(result->positionForOffset(2), true));
- ASSERT_EQ(3u, result->offsetForPosition(result->positionForOffset(3), true));
- ASSERT_EQ(4u, result->offsetForPosition(result->positionForOffset(4), true));
- ASSERT_EQ(5u, result->offsetForPosition(result->positionForOffset(5), true));
- ASSERT_EQ(6u, result->offsetForPosition(result->positionForOffset(6), true));
+ EXPECT_EQ(0u, result->offsetForPosition(result->positionForOffset(0), true));
+ EXPECT_EQ(1u, result->offsetForPosition(result->positionForOffset(1), true));
+ EXPECT_EQ(2u, result->offsetForPosition(result->positionForOffset(2), true));
+ EXPECT_EQ(3u, result->offsetForPosition(result->positionForOffset(3), true));
+ EXPECT_EQ(4u, result->offsetForPosition(result->positionForOffset(4), true));
+ EXPECT_EQ(5u, result->offsetForPosition(result->positionForOffset(5), true));
+ EXPECT_EQ(6u, result->offsetForPosition(result->positionForOffset(6), true));
+}
+
+TEST_F(HarfBuzzShaperTest, ShapeLineLatin) {
+ String string = to16Bit(
+ "Test run with multiple words and breaking "
+ "opportunities.",
+ 56);
+ const AtomicString locale = "en-US";
+ TextDirection direction = TextDirection::kLtr;
+ LineBreakType breakType = LineBreakType::Normal;
+
+ HarfBuzzShaper shaper(string.characters16(), 56);
+ RefPtr<ShapeResult> result = shaper.shape(&font, direction);
+
+ // "Test run with multiple"
+ RefPtr<ShapeResult> first4 = shaper.shape(&font, direction, 0, 22);
+ ASSERT_LT(first4->snappedWidth(), result->snappedWidth());
+
+ // "Test run with"
+ RefPtr<ShapeResult> first3 = shaper.shape(&font, direction, 0, 13);
+ ASSERT_LT(first3->snappedWidth(), first4->snappedWidth());
+
+ // "Test run"
+ RefPtr<ShapeResult> first2 = shaper.shape(&font, direction, 0, 8);
+ ASSERT_LT(first2->snappedWidth(), first3->snappedWidth());
+
+ // "Test"
+ RefPtr<ShapeResult> first1 = shaper.shape(&font, direction, 0, 4);
+ ASSERT_LT(first1->snappedWidth(), first2->snappedWidth());
+
+ // Test the case where the entire string fits.
+ unsigned breakOffset = 0;
+ RefPtr<ShapeResult> line =
+ shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ result->snappedWidth(), &breakOffset);
+ EXPECT_EQ(56u, breakOffset); // After the end of the string.
+ EXPECT_EQ(result->snappedWidth(), line->snappedWidth());
+
+ // Test cases where we break between words.
+ line = shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first4->snappedWidth(), &breakOffset);
+ EXPECT_EQ(22u, breakOffset); // Between "multiple" and " words"
+ EXPECT_EQ(first4->snappedWidth(), line->snappedWidth());
+
+ line = shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first4->snappedWidth() + 10, &breakOffset);
+ EXPECT_EQ(22u, breakOffset); // Between "multiple" and " words"
+ EXPECT_EQ(first4->snappedWidth(), line->snappedWidth());
+
+ line = shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first4->snappedWidth() - 1, &breakOffset);
+ EXPECT_EQ(13u, breakOffset); // Between "width" and "multiple"
+ EXPECT_EQ(first3->snappedWidth(), line->snappedWidth());
+
+ line = shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first3->snappedWidth(), &breakOffset);
+ EXPECT_EQ(13u, breakOffset); // Between "width" and "multiple"
+ EXPECT_EQ(first3->snappedWidth(), line->snappedWidth());
+
+ line = shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first3->snappedWidth() - 1, &breakOffset);
+ EXPECT_EQ(8u, breakOffset); // Between "run" and "width"
+ EXPECT_EQ(first2->snappedWidth(), line->snappedWidth());
+
+ line = shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first2->snappedWidth(), &breakOffset);
+ EXPECT_EQ(8u, breakOffset); // Between "run" and "width"
+ EXPECT_EQ(first2->snappedWidth(), line->snappedWidth());
+
+ line = shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first2->snappedWidth() - 1, &breakOffset);
+ EXPECT_EQ(4u, breakOffset); // Between "Test" and "run"
+ EXPECT_EQ(first1->snappedWidth(), line->snappedWidth());
+
+ line = shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first1->snappedWidth(), &breakOffset);
+ EXPECT_EQ(4u, breakOffset); // Between "Test" and "run"
+ EXPECT_EQ(first1->snappedWidth(), line->snappedWidth());
+
+ // Test the case where we cannot break earlier.
+ line = shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first1->snappedWidth() - 1, &breakOffset);
+ EXPECT_EQ(4u, breakOffset); // Between "Test" and "run"
+ EXPECT_EQ(first1->snappedWidth(), line->snappedWidth());
+}
+
+TEST_F(HarfBuzzShaperTest, ShapeLineLatinMultiLine) {
+ String string = to16Bit("Line breaking test case.", 24);
+ const AtomicString locale = "en-US";
+ TextDirection direction = TextDirection::kLtr;
+ LineBreakType breakType = LineBreakType::Normal;
+
+ HarfBuzzShaper shaper(string.characters16(), 24);
+ RefPtr<ShapeResult> result = shaper.shape(&font, direction);
+ RefPtr<ShapeResult> first = shaper.shape(&font, direction, 0, 4);
+ RefPtr<ShapeResult> midThird = shaper.shape(&font, direction, 0, 16);
+
+ unsigned breakOffset = 0;
+ shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ result->snappedWidth() - 1, &breakOffset);
+ EXPECT_EQ(18u, breakOffset);
+
+ shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ first->snappedWidth(), &breakOffset);
+ EXPECT_EQ(4u, breakOffset);
+
+ shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ midThird->snappedWidth(), &breakOffset);
+ EXPECT_EQ(13u, breakOffset);
+
+ shaper.shapeLine(&font, result.get(), 13u, locale, breakType,
+ midThird->snappedWidth(), &breakOffset);
+ EXPECT_EQ(24u, breakOffset);
+}
+
+TEST_F(HarfBuzzShaperTest, ShapeLineLatinBreakAll) {
+ String string = to16Bit("Testing break type-break all.", 29);
+ const AtomicString locale = "en-US";
+ TextDirection direction = TextDirection::kLtr;
+ LineBreakType breakType = LineBreakType::BreakAll;
+
+ HarfBuzzShaper shaper(string.characters16(), 29);
+ RefPtr<ShapeResult> result = shaper.shape(&font, direction);
+ RefPtr<ShapeResult> midpoint = shaper.shape(&font, direction, 0, 16);
+
+ unsigned breakOffset = 0;
+ RefPtr<ShapeResult> line =
+ shaper.shapeLine(&font, result.get(), 0, locale, breakType,
+ midpoint->snappedWidth(), &breakOffset);
+ EXPECT_EQ(16u, breakOffset);
+ EXPECT_EQ(midpoint->snappedWidth(), line->snappedWidth());
+
+ shaper.shapeLine(&font, result.get(), 16, locale, breakType,
+ result->snappedWidth(), &breakOffset);
+ EXPECT_EQ(29u, breakOffset);
+ EXPECT_GE(midpoint->snappedWidth(), line->snappedWidth());
+}
+
+TEST_F(HarfBuzzShaperTest, ShapeLineArabicThaiHanLatinBreakAll) {
+ UChar mixedString[] = {0x628, 0x20, 0x64A, 0x629, 0x20, 0xE20, 0x65E5, 0x62};
+ const AtomicString locale = "ar_AE";
+ TextDirection direction = TextDirection::kRtl;
+ LineBreakType breakType = LineBreakType::BreakAll;
+
+ HarfBuzzShaper shaper(mixedString, 8);
+ RefPtr<ShapeResult> result = shaper.shape(&font, direction);
+ unsigned breakOffset = 0;
+ shaper.shapeLine(&font, result.get(), 3, locale, breakType,
+ result->snappedWidth() / LayoutUnit(2), &breakOffset);
+}
+
+TEST_F(HarfBuzzShaperTest, ShapeResultCopyRangeIntoLatin) {
+ String string = to16Bit("Testing ShapeResult::createSubRun", 33);
+ TextDirection direction = TextDirection::kLtr;
+
+ HarfBuzzShaper shaper(string.characters16(), 33);
+ RefPtr<ShapeResult> result = shaper.shape(&font, direction);
+
+ RefPtr<ShapeResult> compositeResult =
+ ShapeResult::create(&font, 0, direction);
+ result->copyRange(0, 10, compositeResult.get());
+ result->copyRange(10, 20, compositeResult.get());
+ result->copyRange(20, 30, compositeResult.get());
+ result->copyRange(30, 33, compositeResult.get());
+
+ EXPECT_EQ(result->numCharacters(), compositeResult->numCharacters());
+ EXPECT_EQ(result->snappedWidth(), compositeResult->snappedWidth());
+ EXPECT_EQ(result->snappedStartPositionForOffset(0),
+ compositeResult->snappedStartPositionForOffset(0));
+ EXPECT_EQ(result->snappedStartPositionForOffset(15),
+ compositeResult->snappedStartPositionForOffset(15));
+ EXPECT_EQ(result->snappedStartPositionForOffset(30),
+ compositeResult->snappedStartPositionForOffset(30));
+ EXPECT_EQ(result->snappedStartPositionForOffset(33),
+ compositeResult->snappedStartPositionForOffset(33));
+}
+
+TEST_F(HarfBuzzShaperTest, ShapeResultCopyRangeIntoArabicThaiHanLatin) {
+ UChar mixedString[] = {0x628, 0x20, 0x64A, 0x629, 0x20, 0xE20, 0x65E5, 0x62};
+ TextDirection direction = TextDirection::kLtr;
+
+ HarfBuzzShaper shaper(mixedString, 8);
+ RefPtr<ShapeResult> result = shaper.shape(&font, direction);
+
+ RefPtr<ShapeResult> compositeResult =
+ ShapeResult::create(&font, 0, direction);
+ result->copyRange(0, 4, compositeResult.get());
+ result->copyRange(4, 6, compositeResult.get());
+ result->copyRange(6, 8, compositeResult.get());
+
+ EXPECT_EQ(result->numCharacters(), compositeResult->numCharacters());
+ EXPECT_EQ(result->snappedWidth(), compositeResult->snappedWidth());
+ EXPECT_EQ(result->snappedStartPositionForOffset(0),
+ compositeResult->snappedStartPositionForOffset(0));
+ EXPECT_EQ(result->snappedStartPositionForOffset(1),
+ compositeResult->snappedStartPositionForOffset(1));
+ EXPECT_EQ(result->snappedStartPositionForOffset(2),
+ compositeResult->snappedStartPositionForOffset(2));
+ EXPECT_EQ(result->snappedStartPositionForOffset(3),
+ compositeResult->snappedStartPositionForOffset(3));
+ EXPECT_EQ(result->snappedStartPositionForOffset(4),
+ compositeResult->snappedStartPositionForOffset(4));
+ EXPECT_EQ(result->snappedStartPositionForOffset(5),
+ compositeResult->snappedStartPositionForOffset(5));
+ EXPECT_EQ(result->snappedStartPositionForOffset(6),
+ compositeResult->snappedStartPositionForOffset(6));
+ EXPECT_EQ(result->snappedStartPositionForOffset(7),
+ compositeResult->snappedStartPositionForOffset(7));
+ EXPECT_EQ(result->snappedStartPositionForOffset(8),
+ compositeResult->snappedStartPositionForOffset(8));
}
} // namespace blink
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