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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 "SkStream.h"
#include "SkPixelSerializer.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");
// The created file should be empty.
char buffer[100];
REPORTER_ASSERT(reporter, fread(buffer, 1, 1, file) == 0);
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(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 {
SkBitmap bm;
return bm.installPixels(pixmap.info(),
pixmap.writable_addr(),
pixmap.rowBytes(),
pixmap.ctable(),
nullptr, nullptr)
? SkImageEncoder::EncodeData(bm, SkImageEncoder::kJPEG_Type, 85)
: nullptr;
}
};
} // 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(document_dct_encoder, r) {
REQUIRE_PDF_DOCUMENT(document_dct_encoder, r);
SkBitmap bm;
if (GetResourceAsBitmap("mandrill_64.png", &bm)) {
// Lossy encoding works better on photographs.
REPORTER_ASSERT(r, count_bytes(bm, true) < count_bytes(bm, false));
}
}
DEF_TEST(document_skbug_4734, r) {
REQUIRE_PDF_DOCUMENT(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->drawText(text, strlen(text), 0, 0, SkPaint());
}
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