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skia2/tests/PDFPrimitivesTest.cpp

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/*
* 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 "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 "SkPDFStream.h"
#include "SkPDFTypes.h"
#include "SkReadBuffer.h"
#include "SkScalar.h"
#include "SkStream.h"
#include "SkTypes.h"
#include "Test.h"
#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);
SkAutoTDelete<SkStreamAsset> asset(buffer.detachAsStream());
SkString tmp(asset->getLength());
asset->read(tmp.writable_str(), asset->getLength());
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);
}
#define ASSERT_EQL(REPORTER, SKSTRING, STRING, LEN) \
do { \
const char* strptr = STRING; \
const SkString& sks = SKSTRING; \
if (!eq(sks, strptr, LEN)) { \
REPORT_FAILURE( \
REPORTER, \
"", \
SkStringPrintf("'%s' != '%s'", strptr, sks.c_str())); \
} \
} while (false)
#define ASSERT_EQ(REPORTER, SKSTRING, STRING) \
do { \
const char* str = STRING; \
ASSERT_EQL(REPORTER, SKSTRING, str, strlen(str)); \
} while (false)
#define ASSERT_EMIT_EQ(REPORTER, OBJECT, STRING) \
do { \
SkString result = emit_to_string(OBJECT); \
ASSERT_EQ(REPORTER, result, STRING); \
} while (false)
static void TestPDFStream(skiatest::Reporter* reporter) {
char streamBytes[] = "Test\nFoo\tBar";
SkAutoTDelete<SkMemoryStream> streamData(new SkMemoryStream(
streamBytes, strlen(streamBytes), true));
SkAutoTUnref<SkPDFStream> stream(new SkPDFStream(streamData.get()));
ASSERT_EMIT_EQ(reporter,
*stream,
"<</Length 12>> stream\nTest\nFoo\tBar\nendstream");
stream->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.";
SkAutoDataUnref streamData2(SkData::NewWithCopy(streamBytes2,
strlen(streamBytes2)));
SkAutoTUnref<SkPDFStream> stream(new SkPDFStream(streamData2.get()));
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");
SkAutoDataUnref expectedResultData2(expected.copyToData());
SkString result = emit_to_string(*stream);
ASSERT_EQL(reporter,
result,
(const char*)expectedResultData2->data(),
expectedResultData2->size());
}
}
static void TestObjectNumberMap(skiatest::Reporter* reporter) {
SkPDFObjNumMap objNumMap;
SkAutoTUnref<SkPDFArray> a1(new SkPDFArray);
SkAutoTUnref<SkPDFArray> a2(new SkPDFArray);
SkAutoTUnref<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) {
SkAutoTUnref<SkPDFArray> a1(new SkPDFArray);
SkAutoTUnref<SkPDFArray> a2(new SkPDFArray);
a2->appendObjRef(SkRef(a1.get()));
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) {
SkAutoTUnref<SkPDFDict> proxy(new SkPDFDict());
SkAutoTUnref<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));
REPORTER_ASSERT(reporter, proxy.get() != substituteMap.getSubstitute(stub));
}
// 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;
SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(&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 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");
SkPDFUnion realHalf = SkPDFUnion::Scalar(SK_ScalarHalf);
ASSERT_EMIT_EQ(reporter, realHalf, "0.5");
SkPDFUnion bigScalar = SkPDFUnion::Scalar(110999.75f);
#if !defined(SK_ALLOW_LARGE_PDF_SCALARS)
ASSERT_EMIT_EQ(reporter, bigScalar, "111000");
#else
ASSERT_EMIT_EQ(reporter, bigScalar, "110999.75");
SkPDFUnion biggerScalar = SkPDFUnion::Scalar(50000000.1);
ASSERT_EMIT_EQ(reporter, biggerScalar, "50000000");
SkPDFUnion smallestScalar = SkPDFUnion::Scalar(1.0 / 65536);
ASSERT_EMIT_EQ(reporter, smallestScalar, "0.00001526");
#endif
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,
"<0974657374202920737472696E67202820666F6F>");
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) {
SkAutoTUnref<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 0.5]");
array->appendInt(0);
ASSERT_EMIT_EQ(reporter, *array, "[42 0.5 0]");
array->appendBool(true);
ASSERT_EMIT_EQ(reporter, *array, "[42 0.5 0 true]");
array->appendName("ThisName");
ASSERT_EMIT_EQ(reporter, *array, "[42 0.5 0 true /ThisName]");
array->appendName(SkString("AnotherName"));
ASSERT_EMIT_EQ(reporter, *array, "[42 0.5 0 true /ThisName /AnotherName]");
array->appendString("This String");
ASSERT_EMIT_EQ(reporter, *array,
"[42 0.5 0 true /ThisName /AnotherName (This String)]");
array->appendString(SkString("Another String"));
ASSERT_EMIT_EQ(reporter, *array,
"[42 0.5 0 true /ThisName /AnotherName (This String) "
"(Another String)]");
SkAutoTUnref<SkPDFArray> innerArray(new SkPDFArray);
innerArray->appendInt(-1);
array->appendObject(innerArray.detach());
ASSERT_EMIT_EQ(reporter, *array,
"[42 0.5 0 true /ThisName /AnotherName (This String) "
"(Another String) [-1]]");
SkAutoTUnref<SkPDFArray> referencedArray(new SkPDFArray);
Catalog catalog;
catalog.numbers.addObject(referencedArray.get());
REPORTER_ASSERT(reporter, catalog.numbers.getObjectNumber(
referencedArray.get()) == 1);
array->appendObjRef(referencedArray.detach());
SkString result = emit_to_string(*array, &catalog);
ASSERT_EQ(reporter, result,
"[42 0.5 0 true /ThisName /AnotherName (This String) "
"(Another String) [-1] 1 0 R]");
}
static void TestPDFDict(skiatest::Reporter* reporter) {
SkAutoTUnref<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");
SkAutoTUnref<SkPDFArray> innerArray(new SkPDFArray);
innerArray->appendInt(-100);
dict->insertObject(n3, innerArray.detach());
ASSERT_EMIT_EQ(reporter, *dict, "<</n1 42\n/n2 0.5\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 0.5>>");
dict->insertName("n4", "AName");
ASSERT_EMIT_EQ(reporter, *dict, "<</n1 24\n/n2 99\n/n3 0.5\n/n4 /AName>>");
dict->insertName("n5", SkString("AnotherName"));
ASSERT_EMIT_EQ(reporter, *dict, "<</n1 24\n/n2 99\n/n3 0.5\n/n4 /AName\n"
"/n5 /AnotherName>>");
dict->insertString("n6", "A String");
ASSERT_EMIT_EQ(reporter, *dict, "<</n1 24\n/n2 99\n/n3 0.5\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 0.5\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>>");
SkAutoTUnref<SkPDFArray> referencedArray(new SkPDFArray);
Catalog catalog;
catalog.numbers.addObject(referencedArray.get());
REPORTER_ASSERT(reporter, catalog.numbers.getObjectNumber(
referencedArray.get()) == 1);
dict->insertObjRef("n1", referencedArray.detach());
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:
DummyImageFilter(bool visited = false) : SkImageFilter(0, nullptr), fVisited(visited) {}
~DummyImageFilter() override {}
virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
SkBitmap* result, SkIPoint* offset) const override {
fVisited = true;
offset->fX = offset->fY = 0;
*result = src;
return true;
}
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(DummyImageFilter)
bool visited() const { return fVisited; }
private:
mutable bool fVisited;
};
SkFlattenable* DummyImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
bool visited = buffer.readBool();
return new DummyImageFilter(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;
SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(&stream));
SkCanvas* canvas = doc->beginPage(100.0f, 100.0f);
SkAutoTUnref<DummyImageFilter> filter(new DummyImageFilter());
// 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());
}
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