| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "third_party/blink/renderer/platform/fonts/shaping/shaping_line_breaker.h" |
| |
| #include <unicode/uscript.h> |
| #include "base/time/time.h" |
| #include "cc/base/lap_timer.h" |
| #include "third_party/blink/renderer/platform/fonts/font.h" |
| #include "third_party/blink/renderer/platform/fonts/font_cache.h" |
| #include "third_party/blink/renderer/platform/fonts/font_test_utilities.h" |
| #include "third_party/blink/renderer/platform/fonts/shaping/shape_result_test_info.h" |
| #include "third_party/blink/renderer/platform/fonts/shaping/shape_result_view.h" |
| #include "third_party/blink/renderer/platform/text/text_break_iterator.h" |
| #include "third_party/blink/renderer/platform/text/text_run.h" |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "testing/perf/perf_test.h" |
| |
| namespace blink { |
| namespace { |
| |
| static const int kTimeLimitMillis = 2000; |
| static const int kWarmupRuns = 5; |
| static const int kTimeCheckInterval = 10; |
| |
| struct HarfBuzzShaperCallbackContext { |
| const HarfBuzzShaper* shaper; |
| const Font* font; |
| TextDirection direction; |
| }; |
| |
| scoped_refptr<ShapeResult> HarfBuzzShaperCallback(void* untyped_context, |
| unsigned start, |
| unsigned end) { |
| HarfBuzzShaperCallbackContext* context = |
| static_cast<HarfBuzzShaperCallbackContext*>(untyped_context); |
| return context->shaper->Shape(context->font, context->direction, start, end); |
| } |
| |
| LayoutUnit ShapeText(ShapingLineBreaker* breaker, |
| LayoutUnit available_space, |
| unsigned string_length) { |
| unsigned break_offset = 0; |
| LayoutUnit total_width; |
| ShapingLineBreaker::Result result; |
| scoped_refptr<const ShapeResultView> shape_result; |
| while (break_offset < string_length) { |
| shape_result = breaker->ShapeLine(break_offset, available_space, &result); |
| break_offset = result.break_offset; |
| total_width += shape_result->SnappedWidth(); |
| } |
| return total_width; |
| } |
| |
| } // anonymous namespace |
| |
| class ShapingLineBreakerPerfTest : public testing::Test { |
| public: |
| ShapingLineBreakerPerfTest() |
| : timer_(kWarmupRuns, |
| base::TimeDelta::FromMilliseconds(kTimeLimitMillis), |
| kTimeCheckInterval) {} |
| |
| void SetUp() override { |
| font_description.SetComputedSize(12.0); |
| font = Font(font_description); |
| font.Update(nullptr); |
| } |
| |
| void TearDown() override {} |
| |
| FontCachePurgePreventer font_cache_purge_preventer; |
| FontDescription font_description; |
| Font font; |
| unsigned start_index = 0; |
| unsigned num_glyphs = 0; |
| hb_script_t script = HB_SCRIPT_INVALID; |
| cc::LapTimer timer_; |
| }; |
| |
| TEST_F(ShapingLineBreakerPerfTest, ShapeLatinText) { |
| // "My Brother's Keeper?" |
| // By William Arthur Dunkerley (John Oxenham) |
| // In the public domain. |
| String string( |
| "\"Am I my brother's keeper?\"" |
| "Yes, of a truth!" |
| "Thine asking is thine answer." |
| "That self-condemning cry of Cain" |
| "Has been the plea of every selfish soul since then," |
| "Which hath its brother slain." |
| "God's word is plain," |
| "And doth thy shrinking soul arraign." |
| "" |
| "Thy brother's keeper?" |
| "Yea, of a truth thou art!" |
| "For if not--who?" |
| "Are ye not both,--both thou and he" |
| "Of God's great family?" |
| "How rid thee of thy soul's responsibility?" |
| "For every ill in all the world" |
| "Each soul is sponsor and account must bear." |
| "And He, and he thy brother of despair," |
| "Claim, of thy overmuch, their share." |
| "" |
| "Thou hast had good, and he the strangled days;" |
| "But now,--the old things pass." |
| "No longer of thy grace" |
| "Is he content to live in evil case" |
| "For the anointing of thy shining face." |
| "The old things pass.--Beware lest ye pass with them," |
| "And your place" |
| "Become an emptiness!" |
| "" |
| "Beware! Lest, when the \"Have-nots\" claim," |
| "From those who have, their rightful share," |
| "Thy borders be swept bare" |
| "As by the final flame." |
| "Better to share before than after." |
| "\"After?\" ... For thee may be no after!" |
| "Only the howl of mocking laughter" |
| "At thy belated care. Make no mistake!--" |
| "\"After\" will be too late." |
| "When once the \"Have-nots\" claim ... they take." |
| "\"After!\" ... When that full claim is made," |
| "You and your golden gods may all lie dead." |
| "" |
| "Set now your house in order," |
| "Ere it be too late!" |
| "For, once the storm of hate" |
| "Be loosed, no man shall stay it till" |
| "Its thirst has slaked its fill," |
| "And you, poor victims of this last \"too late,\"" |
| "Shall in the shadows mourn your lost estate."); |
| unsigned len = string.length(); |
| LazyLineBreakIterator break_iterator(string, "en-US", LineBreakType::kNormal); |
| TextDirection direction = TextDirection::kLtr; |
| |
| HarfBuzzShaper shaper(string); |
| scoped_refptr<const ShapeResult> reference_result = |
| shaper.Shape(&font, direction); |
| HarfBuzzShaperCallbackContext context{&shaper, &font, |
| reference_result->Direction()}; |
| ShapingLineBreaker reference_breaker(reference_result, &break_iterator, |
| nullptr, HarfBuzzShaperCallback, |
| &context); |
| |
| scoped_refptr<const ShapeResult> line; |
| LayoutUnit available_width_px(500); |
| LayoutUnit expected_width = |
| ShapeText(&reference_breaker, available_width_px, len); |
| |
| timer_.Reset(); |
| do { |
| scoped_refptr<const ShapeResult> result = shaper.Shape(&font, direction); |
| ShapingLineBreaker breaker(result, &break_iterator, nullptr, |
| HarfBuzzShaperCallback, &context); |
| |
| LayoutUnit width = ShapeText(&breaker, available_width_px, len); |
| EXPECT_EQ(expected_width, width); |
| timer_.NextLap(); |
| } while (!timer_.HasTimeLimitExpired()); |
| |
| perf_test::PrintResult("ShapingLineBreakerPerfTest", "shape latin text", "", |
| timer_.LapsPerSecond(), "runs/s", true); |
| } |
| |
| } // namespace blink |
