| /* |
| * 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 "Resources.h" |
| #include "SkBitmap.h" |
| #include "SkCanvas.h" |
| #include "SkData.h" |
| #include "SkDocument.h" |
| #include "SkDeflate.h" |
| #include "SkImageEncoder.h" |
| #include "SkMatrix.h" |
| #include "SkPDFCanon.h" |
| #include "SkPDFDevice.h" |
| #include "SkPDFFont.h" |
| #include "SkPDFTypes.h" |
| #include "SkPDFUtils.h" |
| #include "SkReadBuffer.h" |
| #include "SkScalar.h" |
| #include "SkSpecialImage.h" |
| #include "SkStream.h" |
| #include "SkTypes.h" |
| #include "Test.h" |
| #include "sk_tool_utils.h" |
| |
| #include <cstdlib> |
| #include <cmath> |
| |
| #define DUMMY_TEXT "DCT compessed stream." |
| |
| namespace { |
| struct Catalog { |
| SkPDFSubstituteMap substitutes; |
| SkPDFObjNumMap numbers; |
| }; |
| } // namespace |
| |
| template <typename T> |
| static SkString emit_to_string(T& obj, Catalog* catPtr = nullptr) { |
| Catalog catalog; |
| SkDynamicMemoryWStream buffer; |
| if (!catPtr) { |
| catPtr = &catalog; |
| } |
| obj.emitObject(&buffer, catPtr->numbers, catPtr->substitutes); |
| 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); |
| } |
| |
| static void TestPDFStream(skiatest::Reporter* reporter) { |
| char streamBytes[] = "Test\nFoo\tBar"; |
| std::unique_ptr<SkStreamAsset> streamData(new SkMemoryStream( |
| streamBytes, strlen(streamBytes), true)); |
| auto stream = sk_make_sp<SkPDFStream>(std::move(streamData)); |
| assert_emit_eq(reporter, |
| *stream, |
| "<</Length 12>> stream\nTest\nFoo\tBar\nendstream"); |
| stream->dict()->insertInt("Attribute", 42); |
| assert_emit_eq(reporter, |
| *stream, |
| "<</Length 12\n/Attribute 42>> stream\n" |
| "Test\nFoo\tBar\nendstream"); |
| |
| { |
| char streamBytes2[] = "This is a longer string, so that compression " |
| "can do something with it. With shorter strings, " |
| "the short circuit logic cuts in and we end up " |
| "with an uncompressed string."; |
| auto stream = sk_make_sp<SkPDFStream>( |
| SkData::MakeWithCopy(streamBytes2, strlen(streamBytes2))); |
| |
| SkDynamicMemoryWStream compressedByteStream; |
| SkDeflateWStream deflateWStream(&compressedByteStream); |
| deflateWStream.write(streamBytes2, strlen(streamBytes2)); |
| deflateWStream.finalize(); |
| |
| SkDynamicMemoryWStream expected; |
| expected.writeText("<</Filter /FlateDecode\n/Length 116>> stream\n"); |
| compressedByteStream.writeToStream(&expected); |
| compressedByteStream.reset(); |
| expected.writeText("\nendstream"); |
| sk_sp<SkData> expectedResultData2(expected.copyToData()); |
| SkString result = emit_to_string(*stream); |
| #ifndef SK_PDF_LESS_COMPRESSION |
| assert_eql(reporter, |
| result, |
| (const char*)expectedResultData2->data(), |
| expectedResultData2->size()); |
| #endif |
| } |
| } |
| |
| static void TestObjectNumberMap(skiatest::Reporter* reporter) { |
| SkPDFObjNumMap objNumMap; |
| sk_sp<SkPDFArray> a1(new SkPDFArray); |
| sk_sp<SkPDFArray> a2(new SkPDFArray); |
| sk_sp<SkPDFArray> a3(new SkPDFArray); |
| |
| objNumMap.addObject(a1.get()); |
| objNumMap.addObject(a2.get()); |
| objNumMap.addObject(a3.get()); |
| |
| // The objects should be numbered in the order they are added, |
| // starting with 1. |
| REPORTER_ASSERT(reporter, objNumMap.getObjectNumber(a1.get()) == 1); |
| REPORTER_ASSERT(reporter, objNumMap.getObjectNumber(a2.get()) == 2); |
| REPORTER_ASSERT(reporter, objNumMap.getObjectNumber(a3.get()) == 3); |
| // Assert that repeated calls to get the object number return |
| // consistent result. |
| REPORTER_ASSERT(reporter, objNumMap.getObjectNumber(a1.get()) == 1); |
| } |
| |
| static void TestObjectRef(skiatest::Reporter* reporter) { |
| sk_sp<SkPDFArray> a1(new SkPDFArray); |
| sk_sp<SkPDFArray> a2(new SkPDFArray); |
| a2->appendObjRef(a1); |
| |
| Catalog catalog; |
| catalog.numbers.addObject(a1.get()); |
| REPORTER_ASSERT(reporter, catalog.numbers.getObjectNumber(a1.get()) == 1); |
| |
| SkString result = emit_to_string(*a2, &catalog); |
| // If appendObjRef misbehaves, then the result would |
| // be [[]], not [1 0 R]. |
| assert_eq(reporter, result, "[1 0 R]"); |
| } |
| |
| static void TestSubstitute(skiatest::Reporter* reporter) { |
| sk_sp<SkPDFDict> proxy(new SkPDFDict()); |
| sk_sp<SkPDFDict> stub(new SkPDFDict()); |
| |
| proxy->insertInt("Value", 33); |
| stub->insertInt("Value", 44); |
| |
| SkPDFSubstituteMap substituteMap; |
| substituteMap.setSubstitute(proxy.get(), stub.get()); |
| SkPDFObjNumMap catalog; |
| catalog.addObject(proxy.get()); |
| |
| REPORTER_ASSERT(reporter, stub.get() == substituteMap.getSubstitute(proxy.get())); |
| REPORTER_ASSERT(reporter, proxy.get() != substituteMap.getSubstitute(stub.get())); |
| } |
| |
| // 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; |
| sk_sp<SkDocument> doc(SkDocument::MakePDF(&outStream)); |
| SkCanvas* canvas = doc->beginPage(100.0f, 100.0f); |
| SkPaint paint; |
| paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| |
| uint16_t glyphID = 65000; |
| canvas->drawText(&glyphID, 2, 0, 0, paint); |
| |
| 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) { |
| sk_sp<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)]"); |
| |
| sk_sp<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]]"); |
| |
| sk_sp<SkPDFArray> referencedArray(new SkPDFArray); |
| Catalog catalog; |
| catalog.numbers.addObject(referencedArray.get()); |
| REPORTER_ASSERT(reporter, catalog.numbers.getObjectNumber( |
| referencedArray.get()) == 1); |
| array->appendObjRef(std::move(referencedArray)); |
| |
| SkString result = emit_to_string(*array, &catalog); |
| assert_eq(reporter, result, |
| "[42 .5 0 true /ThisName /AnotherName (This String) " |
| "(Another String) [-1] 1 0 R]"); |
| } |
| |
| static void TestPDFDict(skiatest::Reporter* reporter) { |
| sk_sp<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"); |
| sk_sp<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>>"); |
| |
| sk_sp<SkPDFArray> referencedArray(new SkPDFArray); |
| Catalog catalog; |
| catalog.numbers.addObject(referencedArray.get()); |
| REPORTER_ASSERT(reporter, catalog.numbers.getObjectNumber( |
| referencedArray.get()) == 1); |
| dict->insertObjRef("n1", std::move(referencedArray)); |
| SkString result = emit_to_string(*dict, &catalog); |
| assert_eq(reporter, result, "<</Type /DType\n/n1 1 0 R>>"); |
| } |
| |
| DEF_TEST(PDFPrimitives, reporter) { |
| TestPDFUnion(reporter); |
| TestPDFArray(reporter); |
| TestPDFDict(reporter); |
| TestPDFStream(reporter); |
| TestObjectNumberMap(reporter); |
| TestObjectRef(reporter); |
| TestSubstitute(reporter); |
| test_issue1083(); |
| } |
| |
| namespace { |
| |
| class DummyImageFilter : public SkImageFilter { |
| public: |
| static sk_sp<DummyImageFilter> Make(bool visited = false) { |
| return sk_sp<DummyImageFilter>(new DummyImageFilter(visited)); |
| } |
| |
| SK_TO_STRING_OVERRIDE() |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(DummyImageFilter) |
| bool visited() const { return fVisited; } |
| |
| protected: |
| sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&, |
| SkIPoint* offset) const override { |
| fVisited = true; |
| offset->fX = offset->fY = 0; |
| return sk_ref_sp<SkSpecialImage>(source); |
| } |
| |
| private: |
| DummyImageFilter(bool visited) : INHERITED(nullptr, 0, nullptr), fVisited(visited) {} |
| |
| mutable bool fVisited; |
| |
| typedef SkImageFilter INHERITED; |
| }; |
| |
| sk_sp<SkFlattenable> DummyImageFilter::CreateProc(SkReadBuffer& buffer) { |
| SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0); |
| bool visited = buffer.readBool(); |
| return DummyImageFilter::Make(visited); |
| } |
| |
| #ifndef SK_IGNORE_TO_STRING |
| void DummyImageFilter::toString(SkString* str) const { |
| str->appendf("DummyImageFilter: ("); |
| str->append(")"); |
| } |
| #endif |
| |
| }; |
| |
| // Check that PDF rendering of image filters successfully falls back to |
| // CPU rasterization. |
| DEF_TEST(PDFImageFilter, reporter) { |
| SkDynamicMemoryWStream stream; |
| sk_sp<SkDocument> doc(SkDocument::MakePDF(&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.get()); |
| 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(PDFFontCanEmbedTypeface, reporter) { |
| SkPDFCanon canon; |
| |
| const char resource[] = "fonts/Roboto2-Regular_NoEmbed.ttf"; |
| sk_sp<SkTypeface> noEmbedTypeface(MakeResourceAsTypeface(resource)); |
| if (noEmbedTypeface) { |
| REPORTER_ASSERT(reporter, |
| !SkPDFFont::CanEmbedTypeface(noEmbedTypeface.get(), &canon)); |
| } |
| sk_sp<SkTypeface> portableTypeface( |
| sk_tool_utils::create_portable_typeface(NULL, SkFontStyle())); |
| REPORTER_ASSERT(reporter, |
| SkPDFFont::CanEmbedTypeface(portableTypeface.get(), &canon)); |
| } |
| |
| |
| // test to see that all finite scalars round trip via scanf(). |
| static void check_pdf_scalar_serialization( |
| skiatest::Reporter* reporter, float inputFloat) { |
| char floatString[SkPDFUtils::kMaximumFloatDecimalLength]; |
| size_t len = SkPDFUtils::FloatToDecimal(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(PDFPrimitives_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(PDFPrimitives_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); |
| } |
| } |