Printing: Convert PrintingContext into an interface implemented by the separate

printing/emf_win_unittest.cc

 // 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 <winspool.h>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/scoped_handle_win.h"
+#include "base/scoped_ptr.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;
@@ skipping 42 matching lines @@
 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);
+  scoped_ptr<printing::PrintingContext> context(
+      printing::PrintingContext::Create());
+  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();
+  context->NewDocument(L"EmfTest.Enumerate");
+  context->NewPage();
   // Process one at a time.
-  printing::Emf::Enumerator emf_enum(emf, context.context(),
+  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();
+  context->PageDone();
+  context->DocumentDone();
 }
 
 // Disabled if no "UnitTest printer" exists.
 TEST_F(EmfPrintingTest, PageBreak) {
   ScopedHDC dc(CreateDC(L"WINSPOOL", L"UnitTest Printer", NULL, NULL));
   if (!dc.Get())
     return;
   printing::Emf emf;
   EXPECT_TRUE(emf.CreateDc(dc.Get(), NULL));
   EXPECT_TRUE(emf.hdc() != NULL);
@@ skipping 54 matching lines @@
 
   // Playback the data.
   hdc = CreateCompatibleDC(NULL);
   EXPECT_TRUE(hdc);
   EXPECT_TRUE(emf.CreateFromFile(metafile_path));
   RECT output_rect = {0, 0, 10, 10};
   EXPECT_TRUE(emf.Playback(hdc, &output_rect));
   EXPECT_TRUE(DeleteDC(hdc));
 }