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1 // Copyright (c) 2006-2008 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 #ifndef CHROME_BROWSER_PRINTING_PAGE_NUMBER_H__ | |
6 #define CHROME_BROWSER_PRINTING_PAGE_NUMBER_H__ | |
7 | |
8 #include <ostream> | |
9 | |
10 #include "chrome/browser/printing/page_range.h" | |
11 | |
12 namespace printing { | |
13 | |
14 class PrintSettings; | |
15 | |
16 // Represents a page series following the array of page ranges defined in a | |
17 // PrintSettings. | |
18 class PageNumber { | |
19 public: | |
20 // Initializes the page to the first page in the settings's range or 0. | |
21 PageNumber(const PrintSettings& settings, int document_page_count); | |
22 | |
23 PageNumber(); | |
24 | |
25 void operator=(const PageNumber& other); | |
26 | |
27 // Initializes the page to the first page in the setting's range or 0. It | |
28 // initialize to npos if the range is empty and document_page_count is 0. | |
29 void Init(const PrintSettings& settings, int document_page_count); | |
30 | |
31 // Converts to a page numbers. | |
32 int ToInt() const { | |
33 return page_number_; | |
34 } | |
35 | |
36 // Calculates the next page in the serie. | |
37 int operator++(); | |
38 | |
39 // Returns an instance that represents the end of a serie. | |
40 static const PageNumber npos() { | |
41 return PageNumber(); | |
42 } | |
43 | |
44 // Equality operator. Only the current page number is verified so that | |
45 // "page != PageNumber::npos()" works. | |
46 bool operator==(const PageNumber& other) const; | |
47 bool operator!=(const PageNumber& other) const; | |
48 | |
49 private: | |
50 // The page range to follow. | |
51 const PageRanges* ranges_; | |
52 | |
53 // The next page to be printed. -1 when not printing. | |
54 int page_number_; | |
55 | |
56 // The next page to be printed. -1 when not used. Valid only if | |
57 // document()->settings().range.empty() is false. | |
58 int page_range_index_; | |
59 | |
60 // Number of expected pages in the document. Used when ranges_ is NULL. | |
61 int document_page_count_; | |
62 }; | |
63 | |
64 // Debug output support. | |
65 template<class E, class T> | |
66 inline typename std::basic_ostream<E,T>& operator<<( | |
67 typename std::basic_ostream<E,T>& ss, const PageNumber& page) { | |
68 return ss << page.ToInt(); | |
69 } | |
70 | |
71 } // namespace printing | |
72 | |
73 #endif // CHROME_BROWSER_PRINTING_PAGE_NUMBER_H__ | |
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