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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#include "Resources.h"
#include "SkCanvas.h"
#include "SkDocument.h"
#include "SkOSFile.h"
#include "SkOSPath.h"
#include "SkStream.h"
#include "SkPixelSerializer.h"
#include "sk_tool_utils.h"
static void test_empty(skiatest::Reporter* reporter) {
SkDynamicMemoryWStream stream;
sk_sp<SkDocument> doc(SkDocument::MakePDF(&stream));
doc->close();
REPORTER_ASSERT(reporter, stream.bytesWritten() == 0);
}
static void test_abort(skiatest::Reporter* reporter) {
SkDynamicMemoryWStream stream;
sk_sp<SkDocument> doc(SkDocument::MakePDF(&stream));
SkCanvas* canvas = doc->beginPage(100, 100);
canvas->drawColor(SK_ColorRED);
doc->endPage();
doc->abort();
// Test that only the header is written, not the full document.
REPORTER_ASSERT(reporter, stream.bytesWritten() < 256);
}
static void test_abortWithFile(skiatest::Reporter* reporter) {
SkString tmpDir = skiatest::GetTmpDir();
if (tmpDir.isEmpty()) {
return; // TODO(edisonn): unfortunatelly this pattern is used in other
// tests, but if GetTmpDir() starts returning and empty dir
// allways, then all these tests will be disabled.
}
SkString path = SkOSPath::Join(tmpDir.c_str(), "aborted.pdf");
// Make sure doc's destructor is called to flush.
{
sk_sp<SkDocument> doc(SkDocument::MakePDF(path.c_str()));
SkCanvas* canvas = doc->beginPage(100, 100);
canvas->drawColor(SK_ColorRED);
doc->endPage();
doc->abort();
}
FILE* file = fopen(path.c_str(), "r");
// Test that only the header is written, not the full document.
char buffer[256];
REPORTER_ASSERT(reporter, fread(buffer, 1, sizeof(buffer), file) < sizeof(buffer));
fclose(file);
}
static void test_file(skiatest::Reporter* reporter) {
SkString tmpDir = skiatest::GetTmpDir();
if (tmpDir.isEmpty()) {
return; // TODO(edisonn): unfortunatelly this pattern is used in other
// tests, but if GetTmpDir() starts returning and empty dir
// allways, then all these tests will be disabled.
}
SkString path = SkOSPath::Join(tmpDir.c_str(), "file.pdf");
sk_sp<SkDocument> doc(SkDocument::MakePDF(path.c_str()));
SkCanvas* canvas = doc->beginPage(100, 100);
canvas->drawColor(SK_ColorRED);
doc->endPage();
doc->close();
FILE* file = fopen(path.c_str(), "r");
REPORTER_ASSERT(reporter, file != nullptr);
char header[100];
REPORTER_ASSERT(reporter, fread(header, 4, 1, file) != 0);
REPORTER_ASSERT(reporter, strncmp(header, "%PDF", 4) == 0);
fclose(file);
}
static void test_close(skiatest::Reporter* reporter) {
SkDynamicMemoryWStream stream;
sk_sp<SkDocument> doc(SkDocument::MakePDF(&stream));
SkCanvas* canvas = doc->beginPage(100, 100);
canvas->drawColor(SK_ColorRED);
doc->endPage();
doc->close();
REPORTER_ASSERT(reporter, stream.bytesWritten() != 0);
}
DEF_TEST(SkPDF_document_tests, reporter) {
REQUIRE_PDF_DOCUMENT(document_tests, reporter);
test_empty(reporter);
test_abort(reporter);
test_abortWithFile(reporter);
test_file(reporter);
test_close(reporter);
}
namespace {
class JPEGSerializer final : public SkPixelSerializer {
bool onUseEncodedData(const void*, size_t) override { return true; }
SkData* onEncode(const SkPixmap& pixmap) override {
return sk_tool_utils::EncodeImageToData(pixmap, SkEncodedImageFormat::kJPEG, 85).release();
}
};
} // namespace
size_t count_bytes(const SkBitmap& bm, bool useDCT) {
SkDynamicMemoryWStream stream;
sk_sp<SkDocument> doc;
if (useDCT) {
doc = SkDocument::MakePDF(&stream, SK_ScalarDefaultRasterDPI,
SkDocument::PDFMetadata(),
sk_make_sp<JPEGSerializer>(), false);
} else {
doc = SkDocument::MakePDF(&stream);
}
SkCanvas* canvas = doc->beginPage(64, 64);
canvas->drawBitmap(bm, 0, 0);
doc->endPage();
doc->close();
return stream.bytesWritten();
}
DEF_TEST(SkPDF_document_dct_encoder, r) {
REQUIRE_PDF_DOCUMENT(SkPDF_document_dct_encoder, r);
SkBitmap bm;
if (GetResourceAsBitmap("images/mandrill_64.png", &bm)) {
// Lossy encoding works better on photographs.
REPORTER_ASSERT(r, count_bytes(bm, true) < count_bytes(bm, false));
}
}
DEF_TEST(SkPDF_document_skbug_4734, r) {
REQUIRE_PDF_DOCUMENT(SkPDF_document_skbug_4734, r);
SkDynamicMemoryWStream stream;
sk_sp<SkDocument> doc(SkDocument::MakePDF(&stream));
SkCanvas* canvas = doc->beginPage(64, 64);
canvas->scale(10000.0f, 10000.0f);
canvas->translate(20.0f, 10.0f);
canvas->rotate(30.0f);
const char text[] = "HELLO";
canvas->drawString(text, 0, 0, SkPaint());
}
static bool contains(const uint8_t* result, size_t size, const char expectation[]) {
size_t len = strlen(expectation);
size_t N = 1 + size - len;
for (size_t i = 0; i < N; ++i) {
if (0 == memcmp(result + i, expectation, len)) {
return true;
}
}
return false;
}
// verify that the PDFA flag does something.
DEF_TEST(SkPDF_pdfa_document, r) {
REQUIRE_PDF_DOCUMENT(SkPDF_pdfa_document, r);
SkDocument::PDFMetadata pdfMetadata;
pdfMetadata.fTitle = "test document";
pdfMetadata.fCreation.fEnabled = true;
pdfMetadata.fCreation.fDateTime = {0, 1999, 12, 5, 31, 23, 59, 59};
SkDynamicMemoryWStream buffer;
auto doc = SkDocument::MakePDF(&buffer, SK_ScalarDefaultRasterDPI,
pdfMetadata, nullptr, /* pdfa = */ true);
doc->beginPage(64, 64)->drawColor(SK_ColorRED);
doc->close();
sk_sp<SkData> data(buffer.detachAsData());
static const char* expectations[] = {
"sRGB IEC61966-2.1",
"<dc:title><rdf:Alt><rdf:li xml:lang=\"x-default\">test document",
"<xmp:CreateDate>1999-12-31T23:59:59+00:00</xmp:CreateDate>",
"/Subtype /XML",
"/CreationDate (D:19991231235959+00'00')>>",
};
for (const char* expectation : expectations) {
if (!contains(data->bytes(), data->size(), expectation)) {
ERRORF(r, "PDFA expectation missing: '%s'.", expectation);
}
}
pdfMetadata.fProducer = "phoney library";
doc = SkDocument::MakePDF(&buffer, SK_ScalarDefaultRasterDPI,
pdfMetadata, nullptr, /* pdfa = */ true);
doc->beginPage(64, 64)->drawColor(SK_ColorRED);
doc->close();
data = buffer.detachAsData();
static const char* moreExpectations[] = {
"/Producer (phoney library)",
"/ProductionLibrary (Skia/PDF m",
"<!-- <skia:ProductionLibrary>Skia/PDF m",
"<pdf:Producer>phoney library</pdf:Producer>",
};
for (const char* expectation : moreExpectations) {
if (!contains(data->bytes(), data->size(), expectation)) {
ERRORF(r, "PDFA expectation missing: '%s'.", expectation);
}
}
}
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