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// Copyright (c) 2006-2008 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 "base/basictypes.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/path_service.h"
#include "printing/printing_context.h"
#include "testing/gtest/include/gtest/gtest.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;
}
};
} // namespace
TEST(EmfTest, DC) {
static const uint32 EMF_HEADER_SIZE = 128;
// Simplest use case.
printing::Emf emf;
RECT rect = {100, 100, 200, 200};
HDC hdc = CreateCompatibleDC(NULL);
EXPECT_TRUE(hdc != NULL);
EXPECT_TRUE(emf.CreateDc(hdc, &rect));
EXPECT_TRUE(emf.hdc() != NULL);
// In theory, you'd use the HDC with GDI functions here.
EXPECT_TRUE(emf.CloseDc());
uint32 size = emf.GetDataSize();
EXPECT_EQ(size, EMF_HEADER_SIZE);
std::vector<BYTE> data;
EXPECT_TRUE(emf.GetData(&data));
EXPECT_EQ(data.size(), size);
emf.CloseEmf();
EXPECT_TRUE(DeleteDC(hdc));
// Playback the data.
hdc = CreateCompatibleDC(NULL);
EXPECT_TRUE(hdc);
EXPECT_TRUE(emf.CreateFromData(&data.front(), size));
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;
printing::PrintSettings settings;
// My test case is a HP Color LaserJet 4550 PCL.
settings.set_device_name(L"UnitTest Printer");
// Initialize it.
printing::PrintingContext context;
EXPECT_EQ(context.InitWithSettings(settings), printing::PrintingContext::OK);
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.
printing::Emf emf;
std::string emf_data;
file_util::ReadFileToString(emf_file, &emf_data);
ASSERT_TRUE(emf_data.size());
EXPECT_TRUE(emf.CreateFromData(&emf_data[0], emf_data.size()));
// This will print to file. The reason is that when running inside a
// unit_test, printing::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.
printing::Emf::Enumerator emf_enum(emf, context.context(),
&emf.GetBounds().ToRECT());
for (printing::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(NULL)) <<
" index: " << index << " type: " << itr->record()->iType;
}
context.PageDone();
context.DocumentDone();
}
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