/* * Copyright 2010 The Android Open Source Project * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "tests/Test.h" #ifdef SK_SUPPORT_PDF #include "include/core/SkBitmap.h" #include "include/core/SkCanvas.h" #include "include/core/SkData.h" #include "include/core/SkImageEncoder.h" #include "include/core/SkMatrix.h" #include "include/core/SkScalar.h" #include "include/core/SkStream.h" #include "include/core/SkTypes.h" #include "include/effects/SkMorphologyImageFilter.h" #include "include/effects/SkPerlinNoiseShader.h" #include "include/private/SkTo.h" #include "src/core/SkGlyphRun.h" #include "src/core/SkImageFilter_Base.h" #include "src/core/SkMakeUnique.h" #include "src/core/SkReadBuffer.h" #include "src/core/SkSpecialImage.h" #include "src/pdf/SkClusterator.h" #include "src/pdf/SkDeflate.h" #include "src/pdf/SkPDFDevice.h" #include "src/pdf/SkPDFDocumentPriv.h" #include "src/pdf/SkPDFFont.h" #include "src/pdf/SkPDFTypes.h" #include "src/pdf/SkPDFUnion.h" #include "src/pdf/SkPDFUtils.h" #include "tools/Resources.h" #include "tools/ToolUtils.h" #include <cstdlib> #include <cmath> #define DUMMY_TEXT "DCT compessed stream." template <typename T> static SkString emit_to_string(T& obj) { SkDynamicMemoryWStream buffer; obj.emitObject(&buffer); SkString tmp(buffer.bytesWritten()); buffer.copyTo(tmp.writable_str()); return tmp; } static bool eq(const SkString& str, const char* strPtr, size_t len) { return len == str.size() && 0 == memcmp(str.c_str(), strPtr, len); } static void assert_eql(skiatest::Reporter* reporter, const SkString& skString, const char* str, size_t len) { if (!eq(skString, str, len)) { REPORT_FAILURE(reporter, "", SkStringPrintf( "'%*s' != '%s'", len, str, skString.c_str())); } } static void assert_eq(skiatest::Reporter* reporter, const SkString& skString, const char* str) { assert_eql(reporter, skString, str, strlen(str)); } template <typename T> static void assert_emit_eq(skiatest::Reporter* reporter, T& object, const char* string) { SkString result = emit_to_string(object); assert_eq(reporter, result, string); } // This test used to assert without the fix submitted for // http://code.google.com/p/skia/issues/detail?id=1083. // SKP files might have invalid glyph ids. This test ensures they are ignored, // and there is no assert on input data in Debug mode. static void test_issue1083() { SkDynamicMemoryWStream outStream; auto doc = SkPDF::MakeDocument(&outStream); SkCanvas* canvas = doc->beginPage(100.0f, 100.0f); uint16_t glyphID = 65000; canvas->drawSimpleText(&glyphID, 2, SkTextEncoding::kGlyphID, 0, 0, SkFont(), SkPaint()); doc->close(); } static void assert_emit_eq_number(skiatest::Reporter* reporter, float number) { SkPDFUnion pdfUnion = SkPDFUnion::Scalar(number); SkString result = emit_to_string(pdfUnion); float value = static_cast<float>(std::atof(result.c_str())); if (value != number) { ERRORF(reporter, "%.9g != %s", number, result.c_str()); } } static void TestPDFUnion(skiatest::Reporter* reporter) { SkPDFUnion boolTrue = SkPDFUnion::Bool(true); assert_emit_eq(reporter, boolTrue, "true"); SkPDFUnion boolFalse = SkPDFUnion::Bool(false); assert_emit_eq(reporter, boolFalse, "false"); SkPDFUnion int42 = SkPDFUnion::Int(42); assert_emit_eq(reporter, int42, "42"); assert_emit_eq_number(reporter, SK_ScalarHalf); assert_emit_eq_number(reporter, 110999.75f); // bigScalar assert_emit_eq_number(reporter, 50000000.1f); // biggerScalar assert_emit_eq_number(reporter, 1.0f / 65536); // smallScalar SkPDFUnion stringSimple = SkPDFUnion::String("test ) string ( foo"); assert_emit_eq(reporter, stringSimple, "(test \\) string \\( foo)"); SkString stringComplexInput("\ttest ) string ( foo"); SkPDFUnion stringComplex = SkPDFUnion::String(stringComplexInput); assert_emit_eq(reporter, stringComplex, "(\\011test \\) string \\( foo)"); SkString binaryStringInput("\1\2\3\4\5\6\7\10\11\12\13\14\15\16\17\20"); SkPDFUnion binaryString = SkPDFUnion::String(binaryStringInput); assert_emit_eq(reporter, binaryString, "<0102030405060708090A0B0C0D0E0F10>"); SkString nameInput("Test name\twith#tab"); SkPDFUnion name = SkPDFUnion::Name(nameInput); assert_emit_eq(reporter, name, "/Test#20name#09with#23tab"); SkString nameInput2("A#/%()<>[]{}B"); SkPDFUnion name2 = SkPDFUnion::Name(nameInput2); assert_emit_eq(reporter, name2, "/A#23#2F#25#28#29#3C#3E#5B#5D#7B#7DB"); SkPDFUnion name3 = SkPDFUnion::Name("SimpleNameWithOnlyPrintableASCII"); assert_emit_eq(reporter, name3, "/SimpleNameWithOnlyPrintableASCII"); // Test that we correctly handle characters with the high-bit set. SkString highBitString("\xDE\xAD" "be\xEF"); SkPDFUnion highBitName = SkPDFUnion::Name(highBitString); assert_emit_eq(reporter, highBitName, "/#DE#ADbe#EF"); } static void TestPDFArray(skiatest::Reporter* reporter) { std::unique_ptr<SkPDFArray> array(new SkPDFArray); assert_emit_eq(reporter, *array, "[]"); array->appendInt(42); assert_emit_eq(reporter, *array, "[42]"); array->appendScalar(SK_ScalarHalf); assert_emit_eq(reporter, *array, "[42 .5]"); array->appendInt(0); assert_emit_eq(reporter, *array, "[42 .5 0]"); array->appendBool(true); assert_emit_eq(reporter, *array, "[42 .5 0 true]"); array->appendName("ThisName"); assert_emit_eq(reporter, *array, "[42 .5 0 true /ThisName]"); array->appendName(SkString("AnotherName")); assert_emit_eq(reporter, *array, "[42 .5 0 true /ThisName /AnotherName]"); array->appendString("This String"); assert_emit_eq(reporter, *array, "[42 .5 0 true /ThisName /AnotherName (This String)]"); array->appendString(SkString("Another String")); assert_emit_eq(reporter, *array, "[42 .5 0 true /ThisName /AnotherName (This String) " "(Another String)]"); std::unique_ptr<SkPDFArray> innerArray(new SkPDFArray); innerArray->appendInt(-1); array->appendObject(std::move(innerArray)); assert_emit_eq(reporter, *array, "[42 .5 0 true /ThisName /AnotherName (This String) " "(Another String) [-1]]"); } static void TestPDFDict(skiatest::Reporter* reporter) { std::unique_ptr<SkPDFDict> dict(new SkPDFDict); assert_emit_eq(reporter, *dict, "<<>>"); dict->insertInt("n1", SkToSizeT(42)); assert_emit_eq(reporter, *dict, "<</n1 42>>"); dict.reset(new SkPDFDict); assert_emit_eq(reporter, *dict, "<<>>"); dict->insertInt("n1", 42); assert_emit_eq(reporter, *dict, "<</n1 42>>"); dict->insertScalar("n2", SK_ScalarHalf); SkString n3("n3"); std::unique_ptr<SkPDFArray> innerArray(new SkPDFArray); innerArray->appendInt(-100); dict->insertObject(n3, std::move(innerArray)); assert_emit_eq(reporter, *dict, "<</n1 42\n/n2 .5\n/n3 [-100]>>"); dict.reset(new SkPDFDict); assert_emit_eq(reporter, *dict, "<<>>"); dict->insertInt("n1", 24); assert_emit_eq(reporter, *dict, "<</n1 24>>"); dict->insertInt("n2", SkToSizeT(99)); assert_emit_eq(reporter, *dict, "<</n1 24\n/n2 99>>"); dict->insertScalar("n3", SK_ScalarHalf); assert_emit_eq(reporter, *dict, "<</n1 24\n/n2 99\n/n3 .5>>"); dict->insertName("n4", "AName"); assert_emit_eq(reporter, *dict, "<</n1 24\n/n2 99\n/n3 .5\n/n4 /AName>>"); dict->insertName("n5", SkString("AnotherName")); assert_emit_eq(reporter, *dict, "<</n1 24\n/n2 99\n/n3 .5\n/n4 /AName\n" "/n5 /AnotherName>>"); dict->insertString("n6", "A String"); assert_emit_eq(reporter, *dict, "<</n1 24\n/n2 99\n/n3 .5\n/n4 /AName\n" "/n5 /AnotherName\n/n6 (A String)>>"); dict->insertString("n7", SkString("Another String")); assert_emit_eq(reporter, *dict, "<</n1 24\n/n2 99\n/n3 .5\n/n4 /AName\n" "/n5 /AnotherName\n/n6 (A String)\n/n7 (Another String)>>"); dict.reset(new SkPDFDict("DType")); assert_emit_eq(reporter, *dict, "<</Type /DType>>"); } DEF_TEST(SkPDF_Primitives, reporter) { TestPDFUnion(reporter); TestPDFArray(reporter); TestPDFDict(reporter); test_issue1083(); } namespace { class DummyImageFilter : public SkImageFilter_Base { public: static sk_sp<DummyImageFilter> Make(bool visited = false) { return sk_sp<DummyImageFilter>(new DummyImageFilter(visited)); } bool visited() const { return fVisited; } protected: sk_sp<SkSpecialImage> onFilterImage(const Context& ctx, SkIPoint* offset) const override { fVisited = true; offset->fX = offset->fY = 0; return sk_ref_sp<SkSpecialImage>(ctx.sourceImage()); } private: SK_FLATTENABLE_HOOKS(DummyImageFilter) DummyImageFilter(bool visited) : INHERITED(nullptr, 0, nullptr), fVisited(visited) {} mutable bool fVisited; typedef SkImageFilter_Base INHERITED; }; sk_sp<SkFlattenable> DummyImageFilter::CreateProc(SkReadBuffer& buffer) { SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0); bool visited = buffer.readBool(); return DummyImageFilter::Make(visited); } }; // Check that PDF rendering of image filters successfully falls back to // CPU rasterization. DEF_TEST(SkPDF_ImageFilter, reporter) { REQUIRE_PDF_DOCUMENT(SkPDF_ImageFilter, reporter); SkDynamicMemoryWStream stream; auto doc = SkPDF::MakeDocument(&stream); SkCanvas* canvas = doc->beginPage(100.0f, 100.0f); sk_sp<DummyImageFilter> filter(DummyImageFilter::Make()); // Filter just created; should be unvisited. REPORTER_ASSERT(reporter, !filter->visited()); SkPaint paint; paint.setImageFilter(filter); canvas->drawRect(SkRect::MakeWH(100, 100), paint); doc->close(); // Filter was used in rendering; should be visited. REPORTER_ASSERT(reporter, filter->visited()); } // Check that PDF rendering of image filters successfully falls back to // CPU rasterization. DEF_TEST(SkPDF_FontCanEmbedTypeface, reporter) { SkNullWStream nullWStream; SkPDFDocument doc(&nullWStream, SkPDF::Metadata()); const char resource[] = "fonts/Roboto2-Regular_NoEmbed.ttf"; sk_sp<SkTypeface> noEmbedTypeface(MakeResourceAsTypeface(resource)); if (noEmbedTypeface) { REPORTER_ASSERT(reporter, !SkPDFFont::CanEmbedTypeface(noEmbedTypeface.get(), &doc)); } sk_sp<SkTypeface> portableTypeface(ToolUtils::create_portable_typeface(nullptr, SkFontStyle())); REPORTER_ASSERT(reporter, SkPDFFont::CanEmbedTypeface(portableTypeface.get(), &doc)); } // test to see that all finite scalars round trip via scanf(). static void check_pdf_scalar_serialization( skiatest::Reporter* reporter, float inputFloat) { char floatString[kMaximumSkFloatToDecimalLength]; size_t len = SkFloatToDecimal(inputFloat, floatString); if (len >= sizeof(floatString)) { ERRORF(reporter, "string too long: %u", (unsigned)len); return; } if (floatString[len] != '\0' || strlen(floatString) != len) { ERRORF(reporter, "terminator misplaced."); return; // The terminator is needed for sscanf(). } if (reporter->verbose()) { SkDebugf("%15.9g = \"%s\"\n", inputFloat, floatString); } float roundTripFloat; if (1 != sscanf(floatString, "%f", &roundTripFloat)) { ERRORF(reporter, "unscannable result: %s", floatString); return; } if (std::isfinite(inputFloat) && roundTripFloat != inputFloat) { ERRORF(reporter, "roundTripFloat (%.9g) != inputFloat (%.9g)", roundTripFloat, inputFloat); } } // Test SkPDFUtils::AppendScalar for accuracy. DEF_TEST(SkPDF_Primitives_Scalar, reporter) { SkRandom random(0x5EED); int iterationCount = 512; while (iterationCount-- > 0) { union { uint32_t u; float f; }; u = random.nextU(); static_assert(sizeof(float) == sizeof(uint32_t), ""); check_pdf_scalar_serialization(reporter, f); } float alwaysCheck[] = { 0.0f, -0.0f, 1.0f, -1.0f, SK_ScalarPI, 0.1f, FLT_MIN, FLT_MAX, -FLT_MIN, -FLT_MAX, FLT_MIN / 16.0f, -FLT_MIN / 16.0f, SK_FloatNaN, SK_FloatInfinity, SK_FloatNegativeInfinity, -FLT_MIN / 8388608.0 }; for (float inputFloat: alwaysCheck) { check_pdf_scalar_serialization(reporter, inputFloat); } } // Test SkPDFUtils:: for accuracy. DEF_TEST(SkPDF_Primitives_Color, reporter) { char buffer[5]; for (int i = 0; i < 256; ++i) { size_t len = SkPDFUtils::ColorToDecimal(i, buffer); REPORTER_ASSERT(reporter, len == strlen(buffer)); float f; REPORTER_ASSERT(reporter, 1 == sscanf(buffer, "%f", &f)); int roundTrip = (int)(0.5 + f * 255); REPORTER_ASSERT(reporter, roundTrip == i); } } static SkGlyphRun make_run(size_t len, const SkGlyphID* glyphs, SkPoint* pos, const SkFont& font, const uint32_t* clusters, size_t utf8TextByteLength, const char* utf8Text) { return SkGlyphRun(font, SkSpan<const SkPoint>{pos, len}, SkSpan<const SkGlyphID>{glyphs, len}, SkSpan<const char>{utf8Text, utf8TextByteLength}, SkSpan<const uint32_t>{clusters, len}); } DEF_TEST(SkPDF_Clusterator, reporter) { SkFont font; { constexpr unsigned len = 11; const uint32_t clusters[len] = { 3, 2, 2, 1, 0, 4, 4, 7, 6, 6, 5 }; const SkGlyphID glyphs[len] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; SkPoint pos[len] = {{0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}}; const char text[] = "abcdefgh"; SkGlyphRun run = make_run(len, glyphs, pos, font, clusters, strlen(text), text); SkClusterator clusterator(run); SkClusterator::Cluster expectations[] = { {&text[3], 1, 0, 1}, {&text[2], 1, 1, 2}, {&text[1], 1, 3, 1}, {&text[0], 1, 4, 1}, {&text[4], 1, 5, 2}, {&text[7], 1, 7, 1}, {&text[6], 1, 8, 2}, {&text[5], 1, 10, 1}, {nullptr, 0, 0, 0}, }; for (const auto& expectation : expectations) { REPORTER_ASSERT(reporter, clusterator.next() == expectation); } } { constexpr unsigned len = 5; const uint32_t clusters[len] = { 0, 1, 4, 5, 6 }; const SkGlyphID glyphs[len] = { 43, 167, 79, 79, 82, }; SkPoint pos[len] = {{0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}}; const char text[] = "Ha\xCC\x8A" "llo"; SkGlyphRun run = make_run(len, glyphs, pos, font, clusters, strlen(text), text); SkClusterator clusterator(run); SkClusterator::Cluster expectations[] = { {&text[0], 1, 0, 1}, {&text[1], 3, 1, 1}, {&text[4], 1, 2, 1}, {&text[5], 1, 3, 1}, {&text[6], 1, 4, 1}, {nullptr, 0, 0, 0}, }; for (const auto& expectation : expectations) { REPORTER_ASSERT(reporter, clusterator.next() == expectation); } } } DEF_TEST(fuzz875632f0, reporter) { SkNullWStream stream; auto doc = SkPDF::MakeDocument(&stream); REPORTER_ASSERT(reporter, doc); SkCanvas* canvas = doc->beginPage(128, 160); SkAutoCanvasRestore autoCanvasRestore(canvas, false); SkPaint layerPaint({0, 0, 0, 0}); layerPaint.setImageFilter(SkDilateImageFilter::Make(536870912, 0, nullptr, nullptr)); layerPaint.setBlendMode(SkBlendMode::kClear); canvas->saveLayer(nullptr, &layerPaint); canvas->saveLayer(nullptr, nullptr); SkPaint paint; paint.setBlendMode(SkBlendMode::kDarken); paint.setShader(SkPerlinNoiseShader::MakeFractalNoise(0, 0, 2, 0, nullptr)); paint.setColor4f(SkColor4f{0, 0, 0 ,0}); canvas->drawPath(SkPath(), paint); } #endif