source: branches/version-2_11-dev/data/module/fpdf/tutorial/tuto6.htm @ 20993

Revision 20993, 12.4 KB checked in by Seasoft, 15 years ago (diff)

#1374 (依存ライブラリのアップデート)

  • FPDF 1.6 -> 1.7
  • FPDI 1.4 -> 1.4.1 (配置パスをFPDFから分離)
Line 
1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
2<html>
3<head>
4<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
5<title>Links and flowing text</title>
6<link type="text/css" rel="stylesheet" href="../fpdf.css">
7</head>
8<body>
9<h1>Links and flowing text</h1>
10This tutorial explains how to insert links (internal and external) and shows a new text writing
11mode. It also contains a basic HTML parser.
12<div class="source">
13<pre><code>&lt;?php
14<span class="kw">require(</span><span class="str">'fpdf.php'</span><span class="kw">);
15
16class </span>PDF <span class="kw">extends </span>FPDF
17<span class="kw">{
18var </span>$B<span class="kw">;
19var </span>$I<span class="kw">;
20var </span>$U<span class="kw">;
21var </span>$HREF<span class="kw">;
22
23function </span>PDF<span class="kw">(</span>$orientation<span class="kw">=</span><span class="str">'P'</span><span class="kw">, </span>$unit<span class="kw">=</span><span class="str">'mm'</span><span class="kw">, </span>$size<span class="kw">=</span><span class="str">'A4'</span><span class="kw">)
24{
25    </span><span class="cmt">// Call parent constructor
26    </span>$<span class="kw">this-&gt;</span>FPDF<span class="kw">(</span>$orientation<span class="kw">,</span>$unit<span class="kw">,</span>$size<span class="kw">);
27    </span><span class="cmt">// Initialization
28    </span>$<span class="kw">this-&gt;</span>B <span class="kw">= </span>0<span class="kw">;
29    </span>$<span class="kw">this-&gt;</span>I <span class="kw">= </span>0<span class="kw">;
30    </span>$<span class="kw">this-&gt;</span>U <span class="kw">= </span>0<span class="kw">;
31    </span>$<span class="kw">this-&gt;</span>HREF <span class="kw">= </span><span class="str">''</span><span class="kw">;
32}
33
34function </span>WriteHTML<span class="kw">(</span>$html<span class="kw">)
35{
36    </span><span class="cmt">// HTML parser
37    </span>$html <span class="kw">= </span>str_replace<span class="kw">(</span><span class="str">"\n"</span><span class="kw">,</span><span class="str">' '</span><span class="kw">,</span>$html<span class="kw">);
38    </span>$a <span class="kw">= </span>preg_split<span class="kw">(</span><span class="str">'/&lt;(.*)&gt;/U'</span><span class="kw">,</span>$html<span class="kw">,-</span>1<span class="kw">,</span>PREG_SPLIT_DELIM_CAPTURE<span class="kw">);
39    foreach(</span>$a <span class="kw">as </span>$i<span class="kw">=&gt;</span>$e<span class="kw">)
40    {
41        if(</span>$i<span class="kw">%</span>2<span class="kw">==</span>0<span class="kw">)
42        {
43            </span><span class="cmt">// Text
44            </span><span class="kw">if(</span>$<span class="kw">this-&gt;</span>HREF<span class="kw">)
45                </span>$<span class="kw">this-&gt;</span>PutLink<span class="kw">(</span>$<span class="kw">this-&gt;</span>HREF<span class="kw">,</span>$e<span class="kw">);
46            else
47                </span>$<span class="kw">this-&gt;</span>Write<span class="kw">(</span>5<span class="kw">,</span>$e<span class="kw">);
48        }
49        else
50        {
51            </span><span class="cmt">// Tag
52            </span><span class="kw">if(</span>$e<span class="kw">[</span>0<span class="kw">]==</span><span class="str">'/'</span><span class="kw">)
53                </span>$<span class="kw">this-&gt;</span>CloseTag<span class="kw">(</span>strtoupper<span class="kw">(</span>substr<span class="kw">(</span>$e<span class="kw">,</span>1<span class="kw">)));
54            else
55            {
56                </span><span class="cmt">// Extract attributes
57                </span>$a2 <span class="kw">= </span>explode<span class="kw">(</span><span class="str">' '</span><span class="kw">,</span>$e<span class="kw">);
58                </span>$tag <span class="kw">= </span>strtoupper<span class="kw">(</span>array_shift<span class="kw">(</span>$a2<span class="kw">));
59                </span>$attr <span class="kw">= array();
60                foreach(</span>$a2 <span class="kw">as </span>$v<span class="kw">)
61                {
62                    if(</span>preg_match<span class="kw">(</span><span class="str">'/([^=]*)=["\']?([^"\']*)/'</span><span class="kw">,</span>$v<span class="kw">,</span>$a3<span class="kw">))
63                        </span>$attr<span class="kw">[</span>strtoupper<span class="kw">(</span>$a3<span class="kw">[</span>1<span class="kw">])] = </span>$a3<span class="kw">[</span>2<span class="kw">];
64                }
65                </span>$<span class="kw">this-&gt;</span>OpenTag<span class="kw">(</span>$tag<span class="kw">,</span>$attr<span class="kw">);
66            }
67        }
68    }
69}
70
71function </span>OpenTag<span class="kw">(</span>$tag<span class="kw">, </span>$attr<span class="kw">)
72{
73    </span><span class="cmt">// Opening tag
74    </span><span class="kw">if(</span>$tag<span class="kw">==</span><span class="str">'B' </span><span class="kw">|| </span>$tag<span class="kw">==</span><span class="str">'I' </span><span class="kw">|| </span>$tag<span class="kw">==</span><span class="str">'U'</span><span class="kw">)
75        </span>$<span class="kw">this-&gt;</span>SetStyle<span class="kw">(</span>$tag<span class="kw">,</span>true<span class="kw">);
76    if(</span>$tag<span class="kw">==</span><span class="str">'A'</span><span class="kw">)
77        </span>$<span class="kw">this-&gt;</span>HREF <span class="kw">= </span>$attr<span class="kw">[</span><span class="str">'HREF'</span><span class="kw">];
78    if(</span>$tag<span class="kw">==</span><span class="str">'BR'</span><span class="kw">)
79        </span>$<span class="kw">this-&gt;</span>Ln<span class="kw">(</span>5<span class="kw">);
80}
81
82function </span>CloseTag<span class="kw">(</span>$tag<span class="kw">)
83{
84    </span><span class="cmt">// Closing tag
85    </span><span class="kw">if(</span>$tag<span class="kw">==</span><span class="str">'B' </span><span class="kw">|| </span>$tag<span class="kw">==</span><span class="str">'I' </span><span class="kw">|| </span>$tag<span class="kw">==</span><span class="str">'U'</span><span class="kw">)
86        </span>$<span class="kw">this-&gt;</span>SetStyle<span class="kw">(</span>$tag<span class="kw">,</span>false<span class="kw">);
87    if(</span>$tag<span class="kw">==</span><span class="str">'A'</span><span class="kw">)
88        </span>$<span class="kw">this-&gt;</span>HREF <span class="kw">= </span><span class="str">''</span><span class="kw">;
89}
90
91function </span>SetStyle<span class="kw">(</span>$tag<span class="kw">, </span>$enable<span class="kw">)
92{
93    </span><span class="cmt">// Modify style and select corresponding font
94    </span>$<span class="kw">this-&gt;</span>$tag <span class="kw">+= (</span>$enable <span class="kw">? </span>1 <span class="kw">: -</span>1<span class="kw">);
95    </span>$style <span class="kw">= </span><span class="str">''</span><span class="kw">;
96    foreach(array(</span><span class="str">'B'</span><span class="kw">, </span><span class="str">'I'</span><span class="kw">, </span><span class="str">'U'</span><span class="kw">) as </span>$s<span class="kw">)
97    {
98        if(</span>$<span class="kw">this-&gt;</span>$s<span class="kw">&gt;</span>0<span class="kw">)
99            </span>$style <span class="kw">.= </span>$s<span class="kw">;
100    }
101    </span>$<span class="kw">this-&gt;</span>SetFont<span class="kw">(</span><span class="str">''</span><span class="kw">,</span>$style<span class="kw">);
102}
103
104function </span>PutLink<span class="kw">(</span>$URL<span class="kw">, </span>$txt<span class="kw">)
105{
106    </span><span class="cmt">// Put a hyperlink
107    </span>$<span class="kw">this-&gt;</span>SetTextColor<span class="kw">(</span>0<span class="kw">,</span>0<span class="kw">,</span>255<span class="kw">);
108    </span>$<span class="kw">this-&gt;</span>SetStyle<span class="kw">(</span><span class="str">'U'</span><span class="kw">,</span>true<span class="kw">);
109    </span>$<span class="kw">this-&gt;</span>Write<span class="kw">(</span>5<span class="kw">,</span>$txt<span class="kw">,</span>$URL<span class="kw">);
110    </span>$<span class="kw">this-&gt;</span>SetStyle<span class="kw">(</span><span class="str">'U'</span><span class="kw">,</span>false<span class="kw">);
111    </span>$<span class="kw">this-&gt;</span>SetTextColor<span class="kw">(</span>0<span class="kw">);
112}
113}
114
115</span>$html <span class="kw">= </span><span class="str">'You can now easily print text mixing different styles: &lt;b&gt;bold&lt;/b&gt;, &lt;i&gt;italic&lt;/i&gt;,
116&lt;u&gt;underlined&lt;/u&gt;, or &lt;b&gt;&lt;i&gt;&lt;u&gt;all at once&lt;/u&gt;&lt;/i&gt;&lt;/b&gt;!&lt;br&gt;&lt;br&gt;You can also insert links on
117text, such as &lt;a href="http://www.fpdf.org"&gt;www.fpdf.org&lt;/a&gt;, or on an image: click on the logo.'</span><span class="kw">;
118
119</span>$pdf <span class="kw">= new </span>PDF<span class="kw">();
120</span><span class="cmt">// First page
121</span>$pdf<span class="kw">-&gt;</span>AddPage<span class="kw">();
122</span>$pdf<span class="kw">-&gt;</span>SetFont<span class="kw">(</span><span class="str">'Arial'</span><span class="kw">,</span><span class="str">''</span><span class="kw">,</span>20<span class="kw">);
123</span>$pdf<span class="kw">-&gt;</span>Write<span class="kw">(</span>5<span class="kw">,</span><span class="str">"To find out what's new in this tutorial, click "</span><span class="kw">);
124</span>$pdf<span class="kw">-&gt;</span>SetFont<span class="kw">(</span><span class="str">''</span><span class="kw">,</span><span class="str">'U'</span><span class="kw">);
125</span>$link <span class="kw">= </span>$pdf<span class="kw">-&gt;</span>AddLink<span class="kw">();
126</span>$pdf<span class="kw">-&gt;</span>Write<span class="kw">(</span>5<span class="kw">,</span><span class="str">'here'</span><span class="kw">,</span>$link<span class="kw">);
127</span>$pdf<span class="kw">-&gt;</span>SetFont<span class="kw">(</span><span class="str">''</span><span class="kw">);
128</span><span class="cmt">// Second page
129</span>$pdf<span class="kw">-&gt;</span>AddPage<span class="kw">();
130</span>$pdf<span class="kw">-&gt;</span>SetLink<span class="kw">(</span>$link<span class="kw">);
131</span>$pdf<span class="kw">-&gt;</span>Image<span class="kw">(</span><span class="str">'logo.png'</span><span class="kw">,</span>10<span class="kw">,</span>12<span class="kw">,</span>30<span class="kw">,</span>0<span class="kw">,</span><span class="str">''</span><span class="kw">,</span><span class="str">'http://www.fpdf.org'</span><span class="kw">);
132</span>$pdf<span class="kw">-&gt;</span>SetLeftMargin<span class="kw">(</span>45<span class="kw">);
133</span>$pdf<span class="kw">-&gt;</span>SetFontSize<span class="kw">(</span>14<span class="kw">);
134</span>$pdf<span class="kw">-&gt;</span>WriteHTML<span class="kw">(</span>$html<span class="kw">);
135</span>$pdf<span class="kw">-&gt;</span>Output<span class="kw">();
136</span>?&gt;</code></pre>
137</div>
138<p class='demo'><a href='tuto6.php' target='_blank' class='demo'>[Demo]</a></p>
139The new method to print text is <a href='../doc/write.htm'>Write()</a>. It's very close to <a href='../doc/multicell.htm'>MultiCell()</a>; the differences are:
140<ul>
141<li>The end of line is at the right margin and the next line begins at the left one</li>
142<li>The current position moves at the end of the text</li>
143</ul>
144So it allows to write a chunk of text, alter the font style, then continue from the exact
145place we left it. On the other hand, you cannot justify it.
146<br>
147<br>
148The method is used on the first page to put a link pointing to the second one. The beginning of
149the sentence is written in regular style, then we switch to underline and finish it. The link
150is created with <a href='../doc/addlink.htm'>AddLink()</a>, which returns a link identifier. The identifier is
151passed as third parameter of Write(). Once the second page is created, we use <a href='../doc/setlink.htm'>SetLink()</a> to
152make the link point to the beginning of the current page.
153<br>
154<br>
155Then we put an image with an external link on it. An external link is just a URL. It's passed as
156last parameter of <a href='../doc/image.htm'>Image()</a>.
157<br>
158<br>
159Finally, the left margin is moved after the image with <a href='../doc/setleftmargin.htm'>SetLeftMargin()</a> and some text in
160HTML format is output. A very simple HTML parser is used for this, based on regular expressions.
161Recognized tags are &lt;b&gt;, &lt;i&gt;, &lt;u&gt;, &lt;a&gt; and &lt;br&gt;; the others are
162ignored. The parser also makes use of the Write() method. An external link is put the same way as
163an internal one (third parameter of Write()). Note that <a href='../doc/cell.htm'>Cell()</a> also allows to put links.
164</body>
165</html>
Note: See TracBrowser for help on using the repository browser.