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