1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "printing/print_destination_interface.h"
6
7#include "base/safe_numerics.h"
8#include "base/win/metro.h"
9#include "win8/util/win8_util.h"
10
11namespace printing {
12
13class PrintDestinationWin : public PrintDestinationInterface {
14 public:
15  PrintDestinationWin()
16      : metro_set_print_page_count_(NULL),
17        metro_set_print_page_content_(NULL) {
18    HMODULE metro_module = base::win::GetMetroModule();
19    if (metro_module != NULL) {
20      metro_set_print_page_count_ =
21          reinterpret_cast<MetroSetPrintPageCount>(
22              ::GetProcAddress(metro_module, "MetroSetPrintPageCount"));
23      metro_set_print_page_content_ =
24          reinterpret_cast<MetroSetPrintPageContent>(
25              ::GetProcAddress(metro_module, "MetroSetPrintPageContent"));
26    }
27  }
28  virtual void SetPageCount(int page_count) {
29    if (metro_set_print_page_count_)
30      metro_set_print_page_count_(page_count);
31  }
32
33  virtual void SetPageContent(int page_number,
34                              void* content,
35                              size_t content_size) {
36    if (metro_set_print_page_content_)
37      metro_set_print_page_content_(page_number - 1, content,
38          base::checked_numeric_cast<UINT32>(content_size));
39  }
40 private:
41  typedef void (*MetroSetPrintPageCount)(INT);
42  typedef void (*MetroSetPrintPageContent)(INT, VOID*, UINT32);
43  MetroSetPrintPageCount metro_set_print_page_count_;
44  MetroSetPrintPageContent metro_set_print_page_content_;
45};
46
47PrintDestinationInterface* CreatePrintDestination() {
48  // We currently only support the Metro print destination.
49  if (win8::IsSingleWindowMetroMode())
50    return new PrintDestinationWin;
51  else
52    return NULL;
53}
54
55}  // namespace printing
56