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1 <HTML> 2 <HEAD> 3 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"> 4 <TITLE>Links and flowing text</TITLE> 5 <LINK TYPE="text/css" REL="stylesheet" HREF="../fpdf.css"> 6 </HEAD> 7 <BODY> 8 <H2>Links and flowing text</H2> 9 This tutorial explains how to insert links (internal and external) and shows a new text writing 10 mode. It also contains a rudimentary HTML parser. 11 <BR> 12 <BR> 13 <TABLE WIDTH="100%" STYLE="color:#4040C0; border-style:ridge" BORDERCOLORLIGHT="#B0B0E0" BORDERCOLORDARK="#000000" BORDER="2" CELLPADDING=6 CELLSPACING=0 BGCOLOR="#F0F5FF"><TR><TD style="border-width:0px"> 14 <NOBR><code><font color="#000000"> 15 <?php<br>define<font class="kw">(</font><font class="str">'FPDF_FONTPATH'</font><font class="kw">,</font><font class="str">'font/'</font><font class="kw">);<br>require(</font><font class="str">'fpdf.php'</font><font class="kw">);<br><br>class </font>PDF <font class="kw">extends </font>FPDF<br><font class="kw">{<br>var </font>$B<font class="kw">;<br>var </font>$I<font class="kw">;<br>var </font>$U<font class="kw">;<br>var </font>$HREF<font class="kw">;<br><br>function </font>PDF<font class="kw">(</font>$orientation<font class="kw">=</font><font class="str">'P'</font><font class="kw">,</font>$unit<font class="kw">=</font><font class="str">'mm'</font><font class="kw">,</font>$format<font class="kw">=</font><font class="str">'A4'</font><font class="kw">)<br>{<br> </font><font class="cmt">//Call parent constructor<br> </font>$<font class="kw">this-></font>FPDF<font class="kw">(</font>$orientation<font class="kw">,</font>$unit<font class="kw">,</font>$format<font class="kw">);<br> </font><font class="cmt">//Initialization<br> </font>$<font class="kw">this-></font>B<font class="kw">=</font>0<font class="kw">;<br> </font>$<font class="kw">this-></font>I<font class="kw">=</font>0<font class="kw">;<br> </font>$<font class="kw">this-></font>U<font class="kw">=</font>0<font class="kw">;<br> </font>$<font class="kw">this-></font>HREF<font class="kw">=</font><font class="str">''</font><font class="kw">;<br>}<br><br>function </font>WriteHTML<font class="kw">(</font>$html<font class="kw">)<br>{<br> </font><font class="cmt">//HTML parser<br> </font>$html<font class="kw">=</font>str_replace<font class="kw">(</font><font class="str">"\n"</font><font class="kw">,</font><font class="str">' '</font><font class="kw">,</font>$html<font class="kw">);<br> </font>$a<font class="kw">=</font>preg_split<font class="kw">(</font><font class="str">'/<(.*)>/U'</font><font class="kw">,</font>$html<font class="kw">,-</font>1<font class="kw">,</font>PREG_SPLIT_DELIM_CAPTURE<font class="kw">);<br> foreach(</font>$a <font class="kw">as </font>$i<font class="kw">=></font>$e<font class="kw">)<br> {<br> if(</font>$i<font class="kw">%</font>2<font class="kw">==</font>0<font class="kw">)<br> {<br> </font><font class="cmt">//Text<br> </font><font class="kw">if(</font>$<font class="kw">this-></font>HREF<font class="kw">)<br> </font>$<font class="kw">this-></font>PutLink<font class="kw">(</font>$<font class="kw">this-></font>HREF<font class="kw">,</font>$e<font class="kw">);<br> else<br> </font>$<font class="kw">this-></font>Write<font class="kw">(</font>5<font class="kw">,</font>$e<font class="kw">);<br> }<br> else<br> {<br> </font><font class="cmt">//Tag<br> </font><font class="kw">if(</font>$e<font class="kw">{</font>0<font class="kw">}==</font><font class="str">'/'</font><font class="kw">)<br> </font>$<font class="kw">this-></font>CloseTag<font class="kw">(</font>strtoupper<font class="kw">(</font>substr<font class="kw">(</font>$e<font class="kw">,</font>1<font class="kw">)));<br> else<br> {<br> </font><font class="cmt">//Extract attributes<br> </font>$a2<font class="kw">=</font>explode<font class="kw">(</font><font class="str">' '</font><font class="kw">,</font>$e<font class="kw">);<br> </font>$tag<font class="kw">=</font>strtoupper<font class="kw">(</font>array_shift<font class="kw">(</font>$a2<font class="kw">));<br> </font>$attr<font class="kw">=array();<br> foreach(</font>$a2 <font class="kw">as </font>$v<font class="kw">)<br> if(</font>ereg<font class="kw">(</font><font class="str">'^([^=]*)=["\']?([^"\']*)["\']?$'</font><font class="kw">,</font>$v<font class="kw">,</font>$a3<font class="kw">))<br> </font>$attr<font class="kw">[</font>strtoupper<font class="kw">(</font>$a3<font class="kw">[</font>1<font class="kw">])]=</font>$a3<font class="kw">[</font>2<font class="kw">];<br> </font>$<font class="kw">this-></font>OpenTag<font class="kw">(</font>$tag<font class="kw">,</font>$attr<font class="kw">);<br> }<br> }<br> }<br>}<br><br>function </font>OpenTag<font class="kw">(</font>$tag<font class="kw">,</font>$attr<font class="kw">)<br>{<br> </font><font class="cmt">//Opening tag<br> </font><font class="kw">if(</font>$tag<font class="kw">==</font><font class="str">'B' </font><font class="kw">or </font>$tag<font class="kw">==</font><font class="str">'I' </font><font class="kw">or </font>$tag<font class="kw">==</font><font class="str">'U'</font><font class="kw">)<br> </font>$<font class="kw">this-></font>SetStyle<font class="kw">(</font>$tag<font class="kw">,</font>true<font class="kw">);<br> if(</font>$tag<font class="kw">==</font><font class="str">'A'</font><font class="kw">)<br> </font>$<font class="kw">this-></font>HREF<font class="kw">=</font>$attr<font class="kw">[</font><font class="str">'HREF'</font><font class="kw">];<br> if(</font>$tag<font class="kw">==</font><font class="str">'BR'</font><font class="kw">)<br> </font>$<font class="kw">this-></font>Ln<font class="kw">(</font>5<font class="kw">);<br>}<br><br>function </font>CloseTag<font class="kw">(</font>$tag<font class="kw">)<br>{<br> </font><font class="cmt">//Closing tag<br> </font><font class="kw">if(</font>$tag<font class="kw">==</font><font class="str">'B' </font><font class="kw">or </font>$tag<font class="kw">==</font><font class="str">'I' </font><font class="kw">or </font>$tag<font class="kw">==</font><font class="str">'U'</font><font class="kw">)<br> </font>$<font class="kw">this-></font>SetStyle<font class="kw">(</font>$tag<font class="kw">,</font>false<font class="kw">);<br> if(</font>$tag<font class="kw">==</font><font class="str">'A'</font><font class="kw">)<br> </font>$<font class="kw">this-></font>HREF<font class="kw">=</font><font class="str">''</font><font class="kw">;<br>}<br><br>function </font>SetStyle<font class="kw">(</font>$tag<font class="kw">,</font>$enable<font class="kw">)<br>{<br> </font><font class="cmt">//Modify style and select corresponding font<br> </font>$<font class="kw">this-></font>$tag<font class="kw">+=(</font>$enable <font class="kw">? </font>1 <font class="kw">: -</font>1<font class="kw">);<br> </font>$style<font class="kw">=</font><font class="str">''</font><font class="kw">;<br> foreach(array(</font><font class="str">'B'</font><font class="kw">,</font><font class="str">'I'</font><font class="kw">,</font><font class="str">'U'</font><font class="kw">) as </font>$s<font class="kw">)<br> if(</font>$<font class="kw">this-></font>$s<font class="kw">></font>0<font class="kw">)<br> </font>$style<font class="kw">.=</font>$s<font class="kw">;<br> </font>$<font class="kw">this-></font>SetFont<font class="kw">(</font><font class="str">''</font><font class="kw">,</font>$style<font class="kw">);<br>}<br><br>function </font>PutLink<font class="kw">(</font>$URL<font class="kw">,</font>$txt<font class="kw">)<br>{<br> </font><font class="cmt">//Put a hyperlink<br> </font>$<font class="kw">this-></font>SetTextColor<font class="kw">(</font>0<font class="kw">,</font>0<font class="kw">,</font>255<font class="kw">);<br> </font>$<font class="kw">this-></font>SetStyle<font class="kw">(</font><font class="str">'U'</font><font class="kw">,</font>true<font class="kw">);<br> </font>$<font class="kw">this-></font>Write<font class="kw">(</font>5<font class="kw">,</font>$txt<font class="kw">,</font>$URL<font class="kw">);<br> </font>$<font class="kw">this-></font>SetStyle<font class="kw">(</font><font class="str">'U'</font><font class="kw">,</font>false<font class="kw">);<br> </font>$<font class="kw">this-></font>SetTextColor<font class="kw">(</font>0<font class="kw">);<br>}<br>}<br><br></font>$html<font class="kw">=</font><font class="str">'You can now easily print text mixing different<br>styles : <B>bold</B>, <I>italic</I>, <U>underlined</U>, or<br><B><I><U>all at once</U></I></B>!<BR>You can also insert links<br>on text, such as <A HREF="http://www.fpdf.org">www.fpdf.org</A>,<br>or on an image: click on the logo.'</font><font class="kw">;<br><br></font>$pdf<font class="kw">=new </font>PDF<font class="kw">();<br></font><font class="cmt">//First page<br></font>$pdf<font class="kw">-></font>AddPage<font class="kw">();<br></font>$pdf<font class="kw">-></font>SetFont<font class="kw">(</font><font class="str">'Arial'</font><font class="kw">,</font><font class="str">''</font><font class="kw">,</font>20<font class="kw">);<br></font>$pdf<font class="kw">-></font>Write<font class="kw">(</font>5<font class="kw">,</font><font class="str">'To find out what\'s new in this tutorial, click '</font><font class="kw">);<br></font>$pdf<font class="kw">-></font>SetFont<font class="kw">(</font><font class="str">''</font><font class="kw">,</font><font class="str">'U'</font><font class="kw">);<br></font>$link<font class="kw">=</font>$pdf<font class="kw">-></font>AddLink<font class="kw">();<br></font>$pdf<font class="kw">-></font>Write<font class="kw">(</font>5<font class="kw">,</font><font class="str">'here'</font><font class="kw">,</font>$link<font class="kw">);<br></font>$pdf<font class="kw">-></font>SetFont<font class="kw">(</font><font class="str">''</font><font class="kw">);<br></font><font class="cmt">//Second page<br></font>$pdf<font class="kw">-></font>AddPage<font class="kw">();<br></font>$pdf<font class="kw">-></font>SetLink<font class="kw">(</font>$link<font class="kw">);<br></font>$pdf<font class="kw">-></font>Image<font class="kw">(</font><font class="str">'logo.png'</font><font class="kw">,</font>10<font class="kw">,</font>10<font class="kw">,</font>30<font class="kw">,</font>0<font class="kw">,</font><font class="str">''</font><font class="kw">,</font><font class="str">'http://www.fpdf.org'</font><font class="kw">);<br></font>$pdf<font class="kw">-></font>SetLeftMargin<font class="kw">(</font>45<font class="kw">);<br></font>$pdf<font class="kw">-></font>SetFontSize<font class="kw">(</font>14<font class="kw">);<br></font>$pdf<font class="kw">-></font>WriteHTML<font class="kw">(</font>$html<font class="kw">);<br></font>$pdf<font class="kw">-></font>Output<font class="kw">();<br></font>?> 16 </font> 17 </code></NOBR></TD></TR></TABLE><P></P> 18 <SCRIPT> 19 <!-- 20 if(document.location.href.indexOf('http:')==0) 21 { 22 document.write("<P CLASS='demo'><A HREF='tuto6.php' TARGET='_blank' CLASS='demo'>[Demo]</A></P>"); 23 } 24 //--> 25 </SCRIPT> 26 The new method to print text is <A HREF='../doc/write.htm'>Write()</A>. It is very close to <A HREF='../doc/multicell.htm'>MultiCell()</A>; the differences 27 are: 28 <UL> 29 <LI>The end of line is at the right margin and the next line begins at the left one 30 <LI>The current position moves at the end of the text 31 </UL> 32 So it allows to write a chunk of text, alter the font style, then continue from the exact 33 place we left it. On the other hand, you cannot full justify it. 34 <BR> 35 <BR> 36 The method is used on the first page to put a link pointing to the second one. The beginning of 37 the sentence is written in regular style, then we switch to underline and finish it. The link 38 is created with <A HREF='../doc/addlink.htm'>AddLink()</A>, which returns a link identifier. The identifier is 39 passed as third parameter of Write(). Once the second page is created, we use <A HREF='../doc/setlink.htm'>SetLink()</A> to 40 make the link point to the beginning of the current page. 41 <BR> 42 <BR> 43 Then we put an image with a link on it. An external link points to an URL (HTTP, mailto...). 44 The URL is simply passed as last parameter of <A HREF='../doc/image.htm'>Image()</A>. 45 Note that external links do not work when the PDF is displayed inside Netscape's plug-in. 46 <BR> 47 <BR> 48 Finally, the left margin is moved after the image with <A HREF='../doc/setleftmargin.htm'>SetLeftMargin()</A> and some text in 49 HTML format is output. An HTML parser is used for this, based on the regular expression splitting 50 function preg_split() and the option PREG_SPLIT_DELIM_CAPTURE (introduced in PHP 4.0.5) which 51 allows to fetch the separators as well (in this case the tags). If you use an older version of 52 PHP, replace the line with this one: 53 <BR> 54 <BR> 55 <TABLE WIDTH="100%" STYLE="color:#4040C0; border-style:ridge" BORDERCOLORLIGHT="#B0B0E0" BORDERCOLORDARK="#000000" BORDER="2" CELLPADDING=6 CELLSPACING=0 BGCOLOR="#F0F5FF"><TR><TD style="border-width:0px"> 56 <NOBR><code><font color="#000000"> 57 $a<font class="kw">=</font>preg_split<font class="kw">(</font><font class="str">'/[<>]/'</font><font class="kw">,</font>$html<font class="kw">);</font><br> 58 </font> 59 </code></NOBR></TD></TR></TABLE><P></P> 60 which is less strict but gives the same results with valid HTML. 61 <BR> 62 Recognized tags are <B>, <I>, <U>, <A> and <BR>; the others are 63 ignored. The parser also makes use of the Write() method. An external link is put the same way as 64 an internal one (third parameter of Write()). 65 <BR> 66 Note that <A HREF='../doc/cell.htm'>Cell()</A> also allows to put links. 67 </BODY> 68 </HTML>
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| Généré le : Sun Feb 25 17:20:01 2007 | par Balluche grâce à PHPXref 0.7 |