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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "printing/emf_win.h"
// For quick access.
#include <wingdi.h>
#include <winspool.h>
#include <string>
#include "base/basictypes.h"
#include "base/file_util.h"
#include "base/files/file_path.h"
#include "base/files/scoped_temp_dir.h"
#include "base/memory/scoped_ptr.h"
#include "base/path_service.h"
#include "base/win/scoped_hdc.h"
#include "printing/printing_context.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/point.h"
#include "ui/gfx/size.h"
namespace {
// This test is automatically disabled if no printer named "UnitTest Printer" is
// available.
class EmfPrintingTest : public testing::Test {
public:
typedef testing::Test Parent;
static bool IsTestCaseDisabled() {
// It is assumed this printer is a HP Color LaserJet 4550 PCL or 4700.
HDC hdc = CreateDC(L"WINSPOOL", L"UnitTest Printer", NULL, NULL);
if (!hdc)
return true;
DeleteDC(hdc);
return false;
}
};
const uint32 EMF_HEADER_SIZE = 128;
} // namespace
namespace printing {
TEST(EmfTest, DC) {
// Simplest use case.
uint32 size;
std::vector<BYTE> data;
{
Emf emf;
EXPECT_TRUE(emf.Init());
EXPECT_TRUE(emf.context() != NULL);
// An empty EMF is invalid, so we put at least a rectangle in it.
::Rectangle(emf.context(), 10, 10, 190, 190);
EXPECT_TRUE(emf.FinishDocument());
size = emf.GetDataSize();
EXPECT_GT(size, EMF_HEADER_SIZE);
EXPECT_TRUE(emf.GetDataAsVector(&data));
EXPECT_EQ(data.size(), size);
}
// Playback the data.
Emf emf;
EXPECT_TRUE(emf.InitFromData(&data.front(), size));
HDC hdc = CreateCompatibleDC(NULL);
EXPECT_TRUE(hdc);
RECT output_rect = {0, 0, 10, 10};
EXPECT_TRUE(emf.Playback(hdc, &output_rect));
EXPECT_TRUE(DeleteDC(hdc));
}
// Disabled if no "UnitTest printer" exist. Useful to reproduce bug 1186598.
TEST_F(EmfPrintingTest, Enumerate) {
if (IsTestCaseDisabled())
return;
PrintSettings settings;
// My test case is a HP Color LaserJet 4550 PCL.
settings.set_device_name(L"UnitTest Printer");
// Initialize it.
scoped_ptr<PrintingContext> context(PrintingContext::Create(std::string()));
EXPECT_EQ(context->InitWithSettings(settings), PrintingContext::OK);
base::FilePath emf_file;
EXPECT_TRUE(PathService::Get(base::DIR_SOURCE_ROOT, &emf_file));
emf_file = emf_file.Append(FILE_PATH_LITERAL("printing"))
.Append(FILE_PATH_LITERAL("test"))
.Append(FILE_PATH_LITERAL("data"))
.Append(FILE_PATH_LITERAL("test4.emf"));
// Load any EMF with an image.
Emf emf;
std::string emf_data;
base::ReadFileToString(emf_file, &emf_data);
ASSERT_TRUE(emf_data.size());
EXPECT_TRUE(emf.InitFromData(&emf_data[0], emf_data.size()));
// This will print to file. The reason is that when running inside a
// unit_test, PrintingContext automatically dumps its files to the
// current directory.
// TODO(maruel): Clean the .PRN file generated in current directory.
context->NewDocument(L"EmfTest.Enumerate");
context->NewPage();
// Process one at a time.
Emf::Enumerator emf_enum(emf, context->context(),
&emf.GetPageBounds(1).ToRECT());
for (Emf::Enumerator::const_iterator itr = emf_enum.begin();
itr != emf_enum.end();
++itr) {
// To help debugging.
ptrdiff_t index = itr - emf_enum.begin();
// If you get this assert, you need to lookup iType in wingdi.h. It starts
// with EMR_HEADER.
EMR_HEADER;
EXPECT_TRUE(itr->SafePlayback(&emf_enum.context_)) <<
" index: " << index << " type: " << itr->record()->iType;
}
context->PageDone();
context->DocumentDone();
}
// Disabled if no "UnitTest printer" exists.
TEST_F(EmfPrintingTest, PageBreak) {
base::win::ScopedCreateDC dc(
CreateDC(L"WINSPOOL", L"UnitTest Printer", NULL, NULL));
if (!dc.Get())
return;
uint32 size;
std::vector<BYTE> data;
{
Emf emf;
EXPECT_TRUE(emf.Init());
EXPECT_TRUE(emf.context() != NULL);
int pages = 3;
while (pages) {
EXPECT_TRUE(emf.StartPage(gfx::Size(), gfx::Rect(), 1));
::Rectangle(emf.context(), 10, 10, 190, 190);
EXPECT_TRUE(emf.FinishPage());
--pages;
}
EXPECT_EQ(3U, emf.GetPageCount());
EXPECT_TRUE(emf.FinishDocument());
size = emf.GetDataSize();
EXPECT_TRUE(emf.GetDataAsVector(&data));
EXPECT_EQ(data.size(), size);
}
// Playback the data.
DOCINFO di = {0};
di.cbSize = sizeof(DOCINFO);
di.lpszDocName = L"Test Job";
int job_id = ::StartDoc(dc.Get(), &di);
Emf emf;
EXPECT_TRUE(emf.InitFromData(&data.front(), size));
EXPECT_TRUE(emf.SafePlayback(dc.Get()));
::EndDoc(dc.Get());
// Since presumably the printer is not real, let us just delete the job from
// the queue.
HANDLE printer = NULL;
if (::OpenPrinter(L"UnitTest Printer", &printer, NULL)) {
::SetJob(printer, job_id, 0, NULL, JOB_CONTROL_DELETE);
ClosePrinter(printer);
}
}
TEST(EmfTest, FileBackedEmf) {
// Simplest use case.
base::ScopedTempDir scratch_metafile_dir;
ASSERT_TRUE(scratch_metafile_dir.CreateUniqueTempDir());
base::FilePath metafile_path;
EXPECT_TRUE(base::CreateTemporaryFileInDir(scratch_metafile_dir.path(),
&metafile_path));
uint32 size;
std::vector<BYTE> data;
{
Emf emf;
EXPECT_TRUE(emf.InitToFile(metafile_path));
EXPECT_TRUE(emf.context() != NULL);
// An empty EMF is invalid, so we put at least a rectangle in it.
::Rectangle(emf.context(), 10, 10, 190, 190);
EXPECT_TRUE(emf.FinishDocument());
size = emf.GetDataSize();
EXPECT_GT(size, EMF_HEADER_SIZE);
EXPECT_TRUE(emf.GetDataAsVector(&data));
EXPECT_EQ(data.size(), size);
}
int64 file_size = 0;
base::GetFileSize(metafile_path, &file_size);
EXPECT_EQ(size, file_size);
// Playback the data.
HDC hdc = CreateCompatibleDC(NULL);
EXPECT_TRUE(hdc);
Emf emf;
EXPECT_TRUE(emf.InitFromFile(metafile_path));
RECT output_rect = {0, 0, 10, 10};
EXPECT_TRUE(emf.Playback(hdc, &output_rect));
EXPECT_TRUE(DeleteDC(hdc));
}
TEST(EmfTest, RasterizeMetafile) {
Emf emf;
EXPECT_TRUE(emf.Init());
EXPECT_TRUE(emf.context() != NULL);
HBRUSH brush = static_cast<HBRUSH>(GetStockObject(BLACK_BRUSH));
for (int i = 0; i < 4; ++i) {
RECT rect = { 5 + i, 5 + i, 5 + i + 1, 5 + i + 2};
FillRect(emf.context(), &rect, brush);
}
EXPECT_TRUE(emf.FinishDocument());
scoped_ptr<Emf> raster(emf.RasterizeMetafile(1));
// Just 1px bitmap but should be stretched to the same bounds.
EXPECT_EQ(emf.GetPageBounds(1), raster->GetPageBounds(1));
raster.reset(emf.RasterizeMetafile(20));
EXPECT_EQ(emf.GetPageBounds(1), raster->GetPageBounds(1));
raster.reset(emf.RasterizeMetafile(16*1024*1024));
// Expected size about 64MB.
EXPECT_LE(abs(int(raster->GetDataSize()) - 64*1024*1024), 1024*1024);
// Bounds should still be the same.
EXPECT_EQ(emf.GetPageBounds(1), raster->GetPageBounds(1));
}
} // namespace printing
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