1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
% \iffalse
%%
%% File: watermark.dtx Copyright (C) 2002--2004 by Alexander I. Rozhenko
%%
%<package>\NeedsTeXFormat{LaTeX2e}
%<package>\ProvidesPackage{watermark}
%<package> [2004/12/09 v1.1 Watermarks (NCC)]
%
% \changes{v1.00}{2002/01/29}{This version is uploaded to CTAN}
% \changes{v1.01}{2002/02/13}{Hbox underfull removed in empty |\thispageheading|}
% \changes{v1.02}{2003/04/04}{Hbox underfull removed in plain and empty styles}
% \changes{v1.1}{2004/12/09}{Simplify the implementation of |\thispageheading|}
% \changes{v1.1}{2004/12/09}{Documentation was prepared}
%
%<*driver>
\documentclass{ltxdoc}
\usepackage{watermark,nccboxes}
\GetFileInfo{watermark.sty}
\begin{document}
\title{The \textsf{watermark} package\thanks{This file
has version number \fileversion, last
revised \filedate.}}
\author{Alexander I. Rozhenko\\rozhenko@oapmg.sscc.ru}
\date{\filedate}
\maketitle
\DocInput{watermark.dtx}
\end{document}
%</driver>
% \fi
%
% \thispageheading{This heading was prepared with the
% {\tt\string\thispageheading} command.\\
% It allows long multi-line headings!}
%
% \section{User Interface}
%
% \DescribeMacro\watermark
% \DescribeMacro\leftwatermark
% \DescribeMacro\rightwatermark
% \DescribeMacro\thiswatermark
% The package provides watermarks on output pages. A watermark is
% some text or picture printed at the background of paper.
% A watermark is prepared in a picture box stored at the
% beginning of header. So, you should place
% the watermark material with LaTeX's |\put| and |\multiput| commands.
% Allowed watermark commands are shown in the table:
% \begin{center}\catcode`|=12
% \small
% \renewcommand\cboxstyle{\footnotesize}
% \begin{tabular}{|l|l|}\hline
% \hfill\cbox{Command}\hfill\mbox{} &
% \hfill\cbox{Meaning}\hfill\mbox{}\\\hline
% \Strut/.8/
% \verb+\watermark+\marg{body} &
% Set the same watermark for all pages\\
% \verb+\leftwatermark+\marg{body} &
% Set the even-page watermark\\
% \verb+\rightwatermark+\marg{body} &
% Set the odd-page watermark\\
% \verb+\thiswatermark+\marg{body} &
% Set a watermark for the current page only \\
% \hline
% \end{tabular}
% \end{center}
% In one-side mode, the |\leftwatermark| is ignored and the
% |\rightwatermark| is applied to all pages.
%
% \DescribeMacro\thispageheading
% The package also provides the command
% |\thispageheading|\marg{heading}
% which replaces a heading for the current page to the specified
% multi-line heading. The heading is prepared in the parbox
% of the |\textwidth| width aligned on the top line. This
% command does not suppress watermarks.
%
% Examples of using watermarks are shown in the |ncccropmark|
% package.
% \StopEventually{}
%
% \section{The Implementation}
%
% \begin{macro}{\@begindvi}
% To support watermarks, we use the |\@begindvi| hook from the output
% routine. This hook works only once at the beginning of dvi,
% but some packages (e.g. |hyperref|) also use it for their own needs.
% So, we redefine it at the beginning of document in such a way to
% accurately save its behaviour after the first call when it can be
% redefined by other packages. All the we need from this hook~---
% to call the |\WMK@insert| command every time when the output
% routine composes a new page.
% \begin{macrocode}
%<*package>
\AtBeginDocument{
\let\WMK@begindvi\@begindvi
\def\@begindvi{%
% \end{macrocode}
% Apply saved |\@begindvi| hook and then call the
% |\WMK@insert| command:
% \begin{macrocode}
\WMK@begindvi
\WMK@insert
% \end{macrocode}
% After that we must redefine the |\@begindvi| hook,
% because it is already redefined here to the |\@empty| value
% (or to something else if another package using this hook is loaded).
% We save its new meaning in the |\WMK@begindvi| command
% and redefine the |\@begindvi|:
% \begin{macrocode}
\global\let\WMK@begindvi\@begindvi
\gdef\@begindvi{\WMK@begindvi\WMK@insert}%
}%
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\WMK@insert}
% The command redefines the current header and inserts the
% |\WMK@hook| at the beginning of header.
% A box produced by this hook has zero natural sizes.
% \begin{macrocode}
\def\WMK@insert{%
\let\WMK@head\@thehead
\def\@thehead{\WMK@hook\WMK@head}%
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\WMK@hook}
% The command applies
% this watermark (|\WMK@this|), odd watermark (|\WMK@odd|),
% or even watermark (|\WMK@even|). The watermarks are prepared
% within the picture environment:
% \begin{macrocode}
\def\WMK@hook{%
\begin{picture}(0,0)\relax
\ifx\WMK@this\relax
\if@twoside
\ifodd\c@page\WMK@odd\else\WMK@even\fi
\else
\WMK@odd
\fi
\else
\WMK@this \global\let\WMK@this\relax
\fi
\end{picture}%
% \end{macrocode}
% After that we test the header. At the first, we test the
% |\WMK@thishead| command. If it is specified, we let
% |\WMK@head| to |\WMK@thishead|.
% \begin{macrocode}
\ifx\WMK@thishead\relax \else
\let\WMK@head\WMK@thishead
\global\let\WMK@thishead\relax
\fi
% \end{macrocode}
% The original |\@thehead| command
% saved in |\WMK@head| can be defined with |\@oddhead| content
% or can be let to |\@oddhead| or |\@evenhead|.
% We test all these cases to recognize when the head is really empty.
% A head prepared with |\thispageheading| can be also empty.
% If the empty case is recognized, we insert the |\hfil| command
% to avoid underfull.
% \begin{macrocode}
\ifx\WMK@head\@empty \hfil
\else
\def\@tempa{\@oddhead}%
\ifx\WMK@head\@tempa
\ifx\@oddhead\@empty \hfil \fi
\fi
\fi
}
% \end{macrocode}
% \end{macro}
%
% Set defaults for this heading and watermarks.
% \begin{macrocode}
\let\WMK@thishead\relax
\let\WMK@this\relax
\let\WMK@odd\@empty
\let\WMK@even\@empty
% \end{macrocode}
%
% \begin{macro}{\watermark}
% \begin{macro}{\leftwatermark}
% \begin{macro}{\rightwatermark}
% \begin{macro}{\thiswatermark}
% Define watermark producing commands:
% \begin{macrocode}
\newcommand{\watermark}[1]{\leftwatermark{#1}\rightwatermark{#1}}
\newcommand{\leftwatermark}[1]{\gdef\WMK@even{#1}}
\newcommand{\rightwatermark}[1]{\gdef\WMK@odd{#1}}
\newcommand{\thiswatermark}[1]{\gdef\WMK@this{#1}}
% \end{macrocode}
% \end{macro}
% \end{macro}
% \end{macro}
% \end{macro}
%
% \begin{macro}{\thispageheading}
% Finally, define the |\thispageheading|\marg{heading} command.
% We especially test the case of empty heading and
% set |\WMK@thishead| to the |\@empty| value in this case.
% This allows avoiding underfull in the |\WMK@hook|.
% \begin{macrocode}
\newcommand{\thispageheading}[1]{%
\def\@tempa{#1}%
\ifx\@tempa\@empty
\global\let\WMK@thishead\@empty
\else
\gdef\WMK@thishead{\parbox[t]\textwidth{#1}}%
\fi
}
%</package>
% \end{macrocode}
% \end{macro}
\endinput
|
