mirror of
https://github.com/janunger/rheinwerk-video-training.git
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81 lines
5.4 KiB
HTML
81 lines
5.4 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Header, footer, page break and image</title>
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<link type="text/css" rel="stylesheet" href="../fpdf.css">
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</head>
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<body>
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<h1>Header, footer, page break and image</h1>
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Here's a two page example with header, footer and logo:
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<div class="source">
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<pre><code><?php
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<span class="kw">require(</span><span class="str">'fpdf.php'</span><span class="kw">);
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class </span>PDF <span class="kw">extends </span>FPDF
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<span class="kw">{
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</span><span class="cmt">// Page header
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</span><span class="kw">function </span>Header<span class="kw">()
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{
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</span><span class="cmt">// Logo
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</span>$<span class="kw">this-></span>Image<span class="kw">(</span><span class="str">'logo.png'</span><span class="kw">,</span>10<span class="kw">,</span>6<span class="kw">,</span>30<span class="kw">);
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</span><span class="cmt">// Arial bold 15
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</span>$<span class="kw">this-></span>SetFont<span class="kw">(</span><span class="str">'Arial'</span><span class="kw">,</span><span class="str">'B'</span><span class="kw">,</span>15<span class="kw">);
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</span><span class="cmt">// Move to the right
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</span>$<span class="kw">this-></span>Cell<span class="kw">(</span>80<span class="kw">);
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</span><span class="cmt">// Title
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</span>$<span class="kw">this-></span>Cell<span class="kw">(</span>30<span class="kw">,</span>10<span class="kw">,</span><span class="str">'Title'</span><span class="kw">,</span>1<span class="kw">,</span>0<span class="kw">,</span><span class="str">'C'</span><span class="kw">);
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</span><span class="cmt">// Line break
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</span>$<span class="kw">this-></span>Ln<span class="kw">(</span>20<span class="kw">);
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}
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</span><span class="cmt">// Page footer
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</span><span class="kw">function </span>Footer<span class="kw">()
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{
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</span><span class="cmt">// Position at 1.5 cm from bottom
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</span>$<span class="kw">this-></span>SetY<span class="kw">(-</span>15<span class="kw">);
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</span><span class="cmt">// Arial italic 8
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</span>$<span class="kw">this-></span>SetFont<span class="kw">(</span><span class="str">'Arial'</span><span class="kw">,</span><span class="str">'I'</span><span class="kw">,</span>8<span class="kw">);
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</span><span class="cmt">// Page number
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</span>$<span class="kw">this-></span>Cell<span class="kw">(</span>0<span class="kw">,</span>10<span class="kw">,</span><span class="str">'Page '</span><span class="kw">.</span>$<span class="kw">this-></span>PageNo<span class="kw">().</span><span class="str">'/{nb}'</span><span class="kw">,</span>0<span class="kw">,</span>0<span class="kw">,</span><span class="str">'C'</span><span class="kw">);
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}
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}
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</span><span class="cmt">// Instanciation of inherited class
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</span>$pdf <span class="kw">= new </span>PDF<span class="kw">();
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</span>$pdf<span class="kw">-></span>AliasNbPages<span class="kw">();
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</span>$pdf<span class="kw">-></span>AddPage<span class="kw">();
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</span>$pdf<span class="kw">-></span>SetFont<span class="kw">(</span><span class="str">'Times'</span><span class="kw">,</span><span class="str">''</span><span class="kw">,</span>12<span class="kw">);
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for(</span>$i<span class="kw">=</span>1<span class="kw">;</span>$i<span class="kw"><=</span>40<span class="kw">;</span>$i<span class="kw">++)
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</span>$pdf<span class="kw">-></span>Cell<span class="kw">(</span>0<span class="kw">,</span>10<span class="kw">,</span><span class="str">'Printing line number '</span><span class="kw">.</span>$i<span class="kw">,</span>0<span class="kw">,</span>1<span class="kw">);
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</span>$pdf<span class="kw">-></span>Output<span class="kw">();
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</span>?></code></pre>
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</div>
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<p class='demo'><a href='tuto2.php' target='_blank' class='demo'>[Demo]</a></p>
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This example makes use of the <a href='../doc/header.htm'>Header()</a> and <a href='../doc/footer.htm'>Footer()</a> methods to process page headers and
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footers. They are called automatically. They already exist in the FPDF class but do nothing,
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therefore we have to extend the class and override them.
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<br>
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<br>
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The logo is printed with the <a href='../doc/image.htm'>Image()</a> method by specifying its upper-left corner and
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its width. The height is calculated automatically to respect the image proportions.
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<br>
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<br>
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To print the page number, a null value is passed as the cell width. It means that the cell
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should extend up to the right margin of the page; this is handy to center text. The current page
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number is returned by the <a href='../doc/pageno.htm'>PageNo()</a> method; as for the total number of pages, it's obtained
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via the special value <code>{nb}</code> which is substituted when the document is finished
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(provided you first called <a href='../doc/aliasnbpages.htm'>AliasNbPages()</a>).
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<br>
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Note the use of the <a href='../doc/sety.htm'>SetY()</a> method which allows to set position at an absolute location in
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the page, starting from the top or the bottom.
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<br>
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<br>
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Another interesting feature is used here: the automatic page breaking. As soon as a cell would
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cross a limit in the page (at 2 centimeters from the bottom by default), a break is issued
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and the font restored. Although the header and footer select their own font (Arial), the body
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continues with Times. This mechanism of automatic restoration also applies to colors and line
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width. The limit which triggers page breaks can be set with <a href='../doc/setautopagebreak.htm'>SetAutoPageBreak()</a>.
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</body>
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</html>
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