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fpdf/tutorial/tuto4.htm
Dave Umrysh 83e2831791 first commit
2022-12-30 14:19:42 -07:00

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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Multi-columns</title>
<link type="text/css" rel="stylesheet" href="../fpdf.css">
</head>
<body>
<h1>Multi-columns</h1>
This example is a variant of the previous one showing how to lay the text across multiple
columns.
<div class="source">
<pre><code>&lt;?php
<span class="kw">require(</span><span class="str">'fpdf.php'</span><span class="kw">);
class </span>PDF <span class="kw">extends </span>FPDF
<span class="kw">{
protected </span>$col <span class="kw">= </span>0<span class="kw">; </span><span class="cmt">// Current column
</span><span class="kw">protected </span>$y0<span class="kw">; </span><span class="cmt">// Ordinate of column start
</span><span class="kw">function </span>Header<span class="kw">()
{
</span><span class="cmt">// Page header
</span><span class="kw">global </span>$title<span class="kw">;
</span>$<span class="kw">this-&gt;</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">);
</span>$w <span class="kw">= </span>$<span class="kw">this-&gt;</span>GetStringWidth<span class="kw">(</span>$title<span class="kw">)+</span>6<span class="kw">;
</span>$<span class="kw">this-&gt;</span>SetX<span class="kw">((</span>210<span class="kw">-</span>$w<span class="kw">)/</span>2<span class="kw">);
</span>$<span class="kw">this-&gt;</span>SetDrawColor<span class="kw">(</span>0<span class="kw">,</span>80<span class="kw">,</span>180<span class="kw">);
</span>$<span class="kw">this-&gt;</span>SetFillColor<span class="kw">(</span>230<span class="kw">,</span>230<span class="kw">,</span>0<span class="kw">);
</span>$<span class="kw">this-&gt;</span>SetTextColor<span class="kw">(</span>220<span class="kw">,</span>50<span class="kw">,</span>50<span class="kw">);
</span>$<span class="kw">this-&gt;</span>SetLineWidth<span class="kw">(</span>1<span class="kw">);
</span>$<span class="kw">this-&gt;</span>Cell<span class="kw">(</span>$w<span class="kw">,</span>9<span class="kw">,</span>$title<span class="kw">,</span>1<span class="kw">,</span>1<span class="kw">,</span><span class="str">'C'</span><span class="kw">,</span>true<span class="kw">);
</span>$<span class="kw">this-&gt;</span>Ln<span class="kw">(</span>10<span class="kw">);
</span><span class="cmt">// Save ordinate
</span>$<span class="kw">this-&gt;</span>y0 <span class="kw">= </span>$<span class="kw">this-&gt;</span>GetY<span class="kw">();
}
function </span>Footer<span class="kw">()
{
</span><span class="cmt">// Page footer
</span>$<span class="kw">this-&gt;</span>SetY<span class="kw">(-</span>15<span class="kw">);
</span>$<span class="kw">this-&gt;</span>SetFont<span class="kw">(</span><span class="str">'Arial'</span><span class="kw">,</span><span class="str">'I'</span><span class="kw">,</span>8<span class="kw">);
</span>$<span class="kw">this-&gt;</span>SetTextColor<span class="kw">(</span>128<span class="kw">);
</span>$<span class="kw">this-&gt;</span>Cell<span class="kw">(</span>0<span class="kw">,</span>10<span class="kw">,</span><span class="str">'Page '</span><span class="kw">.</span>$<span class="kw">this-&gt;</span>PageNo<span class="kw">(),</span>0<span class="kw">,</span>0<span class="kw">,</span><span class="str">'C'</span><span class="kw">);
}
function </span>SetCol<span class="kw">(</span>$col<span class="kw">)
{
</span><span class="cmt">// Set position at a given column
</span>$<span class="kw">this-&gt;</span>col <span class="kw">= </span>$col<span class="kw">;
</span>$x <span class="kw">= </span>10<span class="kw">+</span>$col<span class="kw">*</span>65<span class="kw">;
</span>$<span class="kw">this-&gt;</span>SetLeftMargin<span class="kw">(</span>$x<span class="kw">);
</span>$<span class="kw">this-&gt;</span>SetX<span class="kw">(</span>$x<span class="kw">);
}
function </span>AcceptPageBreak<span class="kw">()
{
</span><span class="cmt">// Method accepting or not automatic page break
</span><span class="kw">if(</span>$<span class="kw">this-&gt;</span>col<span class="kw">&lt;</span>2<span class="kw">)
{
</span><span class="cmt">// Go to next column
</span>$<span class="kw">this-&gt;</span>SetCol<span class="kw">(</span>$<span class="kw">this-&gt;</span>col<span class="kw">+</span>1<span class="kw">);
</span><span class="cmt">// Set ordinate to top
</span>$<span class="kw">this-&gt;</span>SetY<span class="kw">(</span>$<span class="kw">this-&gt;</span>y0<span class="kw">);
</span><span class="cmt">// Keep on page
</span><span class="kw">return </span>false<span class="kw">;
}
else
{
</span><span class="cmt">// Go back to first column
</span>$<span class="kw">this-&gt;</span>SetCol<span class="kw">(</span>0<span class="kw">);
</span><span class="cmt">// Page break
</span><span class="kw">return </span>true<span class="kw">;
}
}
function </span>ChapterTitle<span class="kw">(</span>$num<span class="kw">, </span>$label<span class="kw">)
{
</span><span class="cmt">// Title
</span>$<span class="kw">this-&gt;</span>SetFont<span class="kw">(</span><span class="str">'Arial'</span><span class="kw">,</span><span class="str">''</span><span class="kw">,</span>12<span class="kw">);
</span>$<span class="kw">this-&gt;</span>SetFillColor<span class="kw">(</span>200<span class="kw">,</span>220<span class="kw">,</span>255<span class="kw">);
</span>$<span class="kw">this-&gt;</span>Cell<span class="kw">(</span>0<span class="kw">,</span>6<span class="kw">,</span><span class="str">"Chapter </span>$num<span class="str"> : </span>$label<span class="str">"</span><span class="kw">,</span>0<span class="kw">,</span>1<span class="kw">,</span><span class="str">'L'</span><span class="kw">,</span>true<span class="kw">);
</span>$<span class="kw">this-&gt;</span>Ln<span class="kw">(</span>4<span class="kw">);
</span><span class="cmt">// Save ordinate
</span>$<span class="kw">this-&gt;</span>y0 <span class="kw">= </span>$<span class="kw">this-&gt;</span>GetY<span class="kw">();
}
function </span>ChapterBody<span class="kw">(</span>$file<span class="kw">)
{
</span><span class="cmt">// Read text file
</span>$txt <span class="kw">= </span>file_get_contents<span class="kw">(</span>$file<span class="kw">);
</span><span class="cmt">// Font
</span>$<span class="kw">this-&gt;</span>SetFont<span class="kw">(</span><span class="str">'Times'</span><span class="kw">,</span><span class="str">''</span><span class="kw">,</span>12<span class="kw">);
</span><span class="cmt">// Output text in a 6 cm width column
</span>$<span class="kw">this-&gt;</span>MultiCell<span class="kw">(</span>60<span class="kw">,</span>5<span class="kw">,</span>$txt<span class="kw">);
</span>$<span class="kw">this-&gt;</span>Ln<span class="kw">();
</span><span class="cmt">// Mention
</span>$<span class="kw">this-&gt;</span>SetFont<span class="kw">(</span><span class="str">''</span><span class="kw">,</span><span class="str">'I'</span><span class="kw">);
</span>$<span class="kw">this-&gt;</span>Cell<span class="kw">(</span>0<span class="kw">,</span>5<span class="kw">,</span><span class="str">'(end of excerpt)'</span><span class="kw">);
</span><span class="cmt">// Go back to first column
</span>$<span class="kw">this-&gt;</span>SetCol<span class="kw">(</span>0<span class="kw">);
}
function </span>PrintChapter<span class="kw">(</span>$num<span class="kw">, </span>$title<span class="kw">, </span>$file<span class="kw">)
{
</span><span class="cmt">// Add chapter
</span>$<span class="kw">this-&gt;</span>AddPage<span class="kw">();
</span>$<span class="kw">this-&gt;</span>ChapterTitle<span class="kw">(</span>$num<span class="kw">,</span>$title<span class="kw">);
</span>$<span class="kw">this-&gt;</span>ChapterBody<span class="kw">(</span>$file<span class="kw">);
}
}
</span>$pdf <span class="kw">= new </span>PDF<span class="kw">();
</span>$title <span class="kw">= </span><span class="str">'20000 Leagues Under the Seas'</span><span class="kw">;
</span>$pdf<span class="kw">-&gt;</span>SetTitle<span class="kw">(</span>$title<span class="kw">);
</span>$pdf<span class="kw">-&gt;</span>SetAuthor<span class="kw">(</span><span class="str">'Jules Verne'</span><span class="kw">);
</span>$pdf<span class="kw">-&gt;</span>PrintChapter<span class="kw">(</span>1<span class="kw">,</span><span class="str">'A RUNAWAY REEF'</span><span class="kw">,</span><span class="str">'20k_c1.txt'</span><span class="kw">);
</span>$pdf<span class="kw">-&gt;</span>PrintChapter<span class="kw">(</span>2<span class="kw">,</span><span class="str">'THE PROS AND CONS'</span><span class="kw">,</span><span class="str">'20k_c2.txt'</span><span class="kw">);
</span>$pdf<span class="kw">-&gt;</span>Output<span class="kw">();
</span>?&gt;</code></pre>
</div>
<p class='demo'><a href='tuto4.php' target='_blank' class='demo'>[Demo]</a></p>
The key method used is <a href='../doc/acceptpagebreak.htm'>AcceptPageBreak()</a>. It allows to accept or not an automatic page
break. By refusing it and altering the margin and current position, the desired column layout
is achieved.
<br>
For the rest, not many changes; two properties have been added to the class to save the current
column number and the position where columns begin, and the MultiCell() call specifies a
6 centimeter width.
</body>
</html>
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