ch19s02.html
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Constructing tables</title><link rel="stylesheet" type="text/css" href="manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.0"><link rel="home" href="index.html" title="JpGraph Manual"><link rel="up" href="ch19.html" title="Chapter 19. Graphical tables"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Constructing tables</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center">Chapter 19. Graphical tables</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="sect1" title="Constructing tables"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2579640"></a>Constructing tables</h2></div></div></div>
<p>In this section we will introduce the basic concepts of tables and explain the basic
formatting possibilities that are available. </p>
<div class="sect2" title="Basic tables"><div class="titlepage"><div><div><h3 class="title"><a name="id2579767"></a>Basic tables</h3></div></div></div>
<p>A table is created as an instance of the <code class="code">class GTextTable</code> and can be
managed in much the same way as for example Icons, Texts or other plot objects. It
can be added to the graph (at specified X and Y coordinates) using the standard
<code class="code">Graph::Add()</code> method. </p>
<p>The creation of a table starts with including the necessary file
"<code class="filename">jpgraph_table.php</code>" which contains the class definition for
the <code class="code">GTextTable</code> class. In order to create a table we also need a graph
context to which the table can be added. This can be either one of the ordinary
graphs which used an instance of <code class="code">class Graph</code> or to create a stand alone
table by using an instance of <code class="code">class CanvasGraph</code></p>
<p>Creating a new table is then just matter of creating a new instance of the
<code class="code">class GTextTable</code> and calling the initialization method with the
desired size (in rows and columns) of the table. To display the table stand alone we
also need to create a canvas graph and then add the table to the graph.</p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
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</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags"><?php</span><span class="hl-code">
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-quotes">"</span><span class="hl-string">jprgraph/jpgraph.php</span><span class="hl-quotes">"</span><span class="hl-code">;
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph_canvas.php</span><span class="hl-quotes">'</span><span class="hl-code">;
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-quotes">"</span><span class="hl-string">jprgaph/jpgraph_table.php</span><span class="hl-quotes">"</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Setup a basic canvas graph context</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">CanvasGraph</span><span class="hl-brackets">(</span><span class="hl-number">630</span><span class="hl-code">,</span><span class="hl-number">600</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Create a basic graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$table</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">GTextTable</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$table</span><span class="hl-code">-></span><span class="hl-identifier">Init</span><span class="hl-brackets">(</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">7</span><span class="hl-brackets">)</span><span class="hl-code">; </span><span class="hl-comment">//</span><span class="hl-comment"> Create a 5 rows x 7 columns table</span><span class="hl-comment"></span><span class="hl-code">
...
</span><span class="hl-comment">//</span><span class="hl-comment"> Add the table to the graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$table</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> and send back to the client</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">Stroke</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?></span></pre></td></tr></table></div><p>
</p>
<p>As can be seen above it is not necessary (but still possible) to specify an
explicit physical size for the table. The physical size of the table will be
automatically determined depending on the content of the table.</p>
<p>The cells in the table are numbered sequentially where (0,0) is the top left and
(n-1, m-1) is the bottom right cell in a table with <span class="italic">n</span> rows and <span class="italic">m</span> columns.</p>
<p>The next step is to populate the table with some data. The content in one cell is
specified with the using one of the following methods</p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">GTextTable::Set($aRow, $aCol, $aText)</code></p>
<p>Set the specified text in cell (<code class="code">$aRow</code>,
<code class="code">$aCol</code>)</p>
<p><code class="code">GTextTable::Set($aData)</code></p>
<p>Copy the data in the two dimensional array <code class="code">$aData</code> to the
table</p>
</li><li class="listitem">
<p><code class="code">GTextTable::SetImage($aRow, $aCol, $aText,
$aImage)</code></p>
<p>Set the specified image in cell (<code class="code">$aRow</code>,
<code class="code">$aCol</code>)</p>
</li><li class="listitem">
<p><code class="code">GTextTable::SetCellCountryFlag($aRow,$aCol,$aFlag,$aScale=1.0,$aMix=100,$aStdSize=3)</code></p>
<p>Set the specified country flag in cell (<code class="code">$aRow</code>,
<code class="code">$aCol</code>)</p>
</li></ul></div><p>
</p>
<p>The <code class="code">Set()</code> method is polymorphic and can be called in two different
ways. </p>
<p>It can either be used to specify the value of each individual cell by identifying
the cell by its row and column index (starting at 0) ways. For example to continue
the example above we set the first two cells on the first row to 1 and 2 vi the two
calls </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
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</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">...
$table->Set(0,0,1);
$table->Set(0,1,1);
...</span></pre></td></tr></table></div><p>
</p>
<p>The second, and probably less tedious way is to setup a 2-dimensional array
(matrix) with suitable values and then pass that 2-dimensional array as the first
and only argument to the <code class="code">Set()</code> method as the following example
shows</p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
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</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$data = array( array( 12, 7),
array( 10, 5));
$table->Set($data)</span></pre></td></tr></table></div><p>
</p>
<p>If the table is specified by a matrix directly it is not necessary to make the
initial <code class="code">Init()</code> call since it will be automatically determined by the
size of the matrix. </p>
<p>The following basic full example creates a 2 rows by 4 columns table with
consecutive values. Note here that we make use of <code class="code">CanvasGraph</code> to
provide the graph on which to add the table. The result of this script is shown in
<a class="xref" href="ch19s02.html#fig.table_howto1" title="Figure 19.3. The most basic 2x4 table (table_howto1.php)">Figure 19.3. The most basic 2x4 table <code class="uri"><a class="uri" href="example_src/table_howto1.html" target="_top">(<code class="filename">table_howto1.php</code>)</a></code> </a></p>
<p>
</p><div class="example"><a name="example.table_howto1"></a><p class="title"><b>Example 19.1. The most basic 2x4 table (<code class="filename">table_howto1.php</code>) </b></p><div class="example-contents"> <div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
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</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags"><?php</span><span class="hl-code">
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph_canvas.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-reserved">require_once</span><span class="hl-code"> </span><span class="hl-brackets">(</span><span class="hl-quotes">'</span><span class="hl-string">jpgraph/jpgraph_table.php</span><span class="hl-quotes">'</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Create a canvas graph where the table can be added</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">CanvasGraph</span><span class="hl-brackets">(</span><span class="hl-number">70</span><span class="hl-code">,</span><span class="hl-number">50</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Setup the basic table</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$data</span><span class="hl-code"> = </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-code"> </span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">1</span><span class="hl-code">,</span><span class="hl-number">2</span><span class="hl-code">,</span><span class="hl-number">3</span><span class="hl-code">,</span><span class="hl-number">4</span><span class="hl-brackets">)</span><span class="hl-code">,</span><span class="hl-reserved">array</span><span class="hl-brackets">(</span><span class="hl-number">5</span><span class="hl-code">,</span><span class="hl-number">6</span><span class="hl-code">,</span><span class="hl-number">7</span><span class="hl-code">,</span><span class="hl-number">8</span><span class="hl-brackets">)</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$table</span><span class="hl-code"> = </span><span class="hl-reserved">new</span><span class="hl-code"> </span><span class="hl-identifier">GTextTable</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$table</span><span class="hl-code">-></span><span class="hl-identifier">Set</span><span class="hl-brackets">(</span><span class="hl-var">$data</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> Add the table to the graph</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">Add</span><span class="hl-brackets">(</span><span class="hl-var">$table</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-comment">//</span><span class="hl-comment"> ... and send back the table to the client</span><span class="hl-comment"></span><span class="hl-code">
</span><span class="hl-var">$graph</span><span class="hl-code">-></span><span class="hl-identifier">Stroke</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?></span></pre></td></tr></table></div></div></div><p><br class="example-break"> </p><div class="figure"><a name="fig.table_howto1"></a><p class="title"><b>Figure 19.3. The most basic 2x4 table <code class="uri"><a class="uri" href="example_src/table_howto1.html" target="_top">(<code class="filename">table_howto1.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto1.png" alt="The most basic 2x4 table (table_howto1.php)"></span> </div></div><p><br class="figure-break">
</p>
<p>In the example above we also made use of a minor shortcut. If the data to the
table is specified with a 2-dimensional array there is no need to call the
<code class="code">Init()</code> method since the size will be determined by the supplied
array. </p>
<p>We will not yet begin discussion how to change fonts, colors and grids. Instead we
will focus on the structure of the table and introduce the merge operation. </p>
</div>
<div class="sect2" title="Merging cells"><div class="titlepage"><div><div><h3 class="title"><a name="id2579770"></a>Merging cells</h3></div></div></div>
<p>The only way to change the structure (as opposed to the look & feel) of the
table is by merging two or more cells. The merge operation is done via one of three
method calls: </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">MergeRow()</code></p>
<p>Merge all cells in a specified row</p>
</li><li class="listitem">
<p><code class="code">MergeCol()</code></p>
<p>Merge all cells in a specified column</p>
</li><li class="listitem">
<p><code class="code">MergeCells()</code></p>
<p>Merge a rectangular range of cells</p>
</li></ul></div><p>
</p>
<p>The first two methods are really just simplifications for the third most generic
method. The first two methods merge all the cells in a specified row or column and
the third method merges any arbitrary rectangular range of cells specified by the
upper left nd lower right corner. </p>
<p>In addition, by default, these calls will also center align the text in the merged
cells (both horizontally and vertically). This can however be adjusted by giving the
wanted alignment as additional argument to the methods or by calling the specific
APIs that controls the alignment of the data within each cell. </p>
<p>The third (and most generic) method merge a range of cells specified by the top
left and bottom right corner. So, for example, the following line will merge the
rightmost four cells in the previous example </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->MergeCells(0,2,1,3);</span></pre></td></tr></table></div><p>
</p>
<p>
</p><div class="figure"><a name="fig.table_howto2"></a><p class="title"><b>Figure 19.4. Merging the rightmost 4 cells in the table <code class="uri"><a class="uri" href="example_src/table_howto2.html" target="_top">(<code class="filename">table_howto2.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto2.png" alt="Merging the rightmost 4 cells in the table (table_howto2.php)"></span> </div></div><p><br class="figure-break">
</p>
<p>The merged cell can later on be referenced by the top left of the original merged
cell range. This means that the merged cell in the above example is referred to as
the (0,2) cell. </p>
<p>If we instead wanted to merge the top row of the table we could have simplified
the call by using one of the alternative merge methods. In this case the<code class="code">
MergeRow()</code> method would be applicable as in </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->MergeRow(0);</span></pre></td></tr></table></div><p>
</p>
<p>which would then give the table as shown in <a class="xref" href="ch19s02.html#fig.table_howto3" title="Figure 19.5. Merging the top row (table_howto3.php)">Figure 19.5. Merging the top row <code class="uri"><a class="uri" href="example_src/table_howto3.html" target="_top">(<code class="filename">table_howto3.php</code>)</a></code> </a></p>
<p>
</p><div class="figure"><a name="fig.table_howto3"></a><p class="title"><b>Figure 19.5. Merging the top row <code class="uri"><a class="uri" href="example_src/table_howto3.html" target="_top">(<code class="filename">table_howto3.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto3.png" alt="Merging the top row (table_howto3.php)"></span> </div></div><p><br class="figure-break">
</p>
<p>In summary, the following three rules apply to merging and/or merged cells </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>It is an error to try o merge already merged cells. </p>
</li><li class="listitem">
<p>A merged cell is referenced by the top left cell in the merged range.
</p>
</li><li class="listitem">
<p>All formatting that can be applied to a single cell can also be
applied to a merged cell. </p>
</li></ul></div><p>
</p>
</div>
<div class="sect2" title="Font adjustment"><div class="titlepage"><div><div><h3 class="title"><a name="id2580253"></a>Font adjustment</h3></div></div></div>
<p>The most basic way to change the look and feel of the table is to adjust the font
that is used in the different cells in the table. To adjust the font within the
table the following methods are available </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">SetFont()</code>, Specify the default font for the entire table
or for a specified range of cells </p>
</li><li class="listitem">
<p><code class="code">SetRowFont()</code>, Specify the font for an entire row of cells
</p>
</li><li class="listitem">
<p><code class="code">SetColFont()</code>, Specify the font for an entire column of
cells </p>
</li><li class="listitem">
<p><code class="code">SetCellFont()</code>, Specify the font for a single cell </p>
</li></ul></div>
<p>By default the font in the table is set to <code class="code">FF_FONT1</code>, i.e. the
built-in bit mapped font of medium size. The default color of the font is 'black'. </p>
<p>
</p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>If several font settings are applied to the same cell it will be the last
method call before the table <code class="code">Stroke()</code> method that will take
precedence.</p>
</div><p>
</p>
<p>As a simple example the following script shows how to adjust the font used in the
first merged row in the previous example. </p>
<p>
</p><div class="figure"><a name="fig.table_howto5"></a><p class="title"><b>Figure 19.6. Adjusting the font in the top row <code class="uri"><a class="uri" href="example_src/table_howto5.html" target="_top">(<code class="filename">table_howto5.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto5.png" alt="Adjusting the font in the top row (table_howto5.php)"></span> </div></div><p><br class="figure-break">
</p>
<p>The font in <a class="xref" href="ch19s02.html#fig.table_howto5" title="Figure 19.6. Adjusting the font in the top row (table_howto5.php)">Figure 19.6. Adjusting the font in the top row <code class="uri"><a class="uri" href="example_src/table_howto5.html" target="_top">(<code class="filename">table_howto5.php</code>)</a></code> </a> was adjusted with a call to </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetCellFont(0,0,FF_ARIAL,FS_BOLD,14);</span></pre></td></tr></table></div><p>
</p>
<p><span class="bold"><strong> Polymorphic <code class="code">SetFont()</code></strong></span></p>
<p>Before finishing this section it is worth noting that the <code class="code">SetFont()</code>
method is polymorphic and can be called in two different ways. </p>
<p>
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<p>In the first way it can be called with a single font (triple)
argument. That font specification will then become the default for all
cells in the table, for example </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetFont(FF_TIMES,FS_NORMAL,12);</span></pre></td></tr></table></div><p>
</p>
<p>will set the entire table to use Times TTF font. </p>
</li><li class="listitem">
<p>In the second way the first four arguments specifies a cell range (top
left, bottom right) to apply the font setting to, for example </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetFont(0,1,1,2,FF_TIMES,FS_NORMAL,12);</span></pre></td></tr></table></div><p>
</p>
</li></ol></div><p>
</p>
</div>
<div class="sect2" title="Color adjustment"><div class="titlepage"><div><div><h3 class="title"><a name="id2580295"></a>Color adjustment</h3></div></div></div>
<p>In order to adjust the look and feel of the table it is possible to set the
following colors of the table: </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>The color of the text/number in each cell </p>
</li><li class="listitem">
<p>The background color of each cell </p>
</li><li class="listitem">
<p>The color of the grid (inside the table) and border (around the table)
</p>
</li></ul></div><p>
</p>
<p>The font color for a cell (or range of cells) is specified with one of </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">SetColor()</code>, Set the color for a range of cells or the
entire table </p>
</li><li class="listitem">
<p><code class="code">SetRowColor()</code>, Set the color for a specified row of cells
</p>
</li><li class="listitem">
<p><code class="code">SetColColor()</code>, Set the color for a specified column of
cells </p>
</li><li class="listitem">
<p><code class="code">SetCellColor()</code>, Set the color for a specified cells
</p>
</li></ul></div><p>
</p>
<p>In a similar way the background color (or the fill color) of a cell can be
specified with </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">SetFillColor()</code>, Set the fill color for a range of cells
or the entire table </p>
</li><li class="listitem">
<p><code class="code">SetRowFillColor()</code>, Set the fill color for a specified row
of cells </p>
</li><li class="listitem">
<p><code class="code">SetColFillColor()</code>, Set the fill color for a specified
column of cells </p>
</li><li class="listitem">
<p><code class="code">SetCellFillColor()</code>, Set the fill color for a specified
cells </p>
</li></ul></div><p>
</p>
<p>The way to adjust the color of the grid and border will be discussed in the
section regarding borders and grids below. </p>
<p><span class="bold"><strong>Polymorphic <code class="code">SetColor()</code> and
<code class="code">SetFillColor()</code></strong></span></p>
<p>In the same manner as <code class="code">SetFont()</code> can act on both all cells and a
specified range of cells the two color setting methods work in the same way. Both
<code class="code">SetColor()</code> and <code class="code">SetFillColor()</code> can both be called
either with a single argument (in which all cells will be addressed) or by giving a
range (top left and bottom right cell) to be acted upon. </p>
<p>The following method calls will set the background color of the first three cells
in row 2 and 3 and the entire table </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
3
4
5
6
7
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">...
// First set the default fill color to lightgray
$table->SetFillColor('lightgray');
// The Set a range to yellow
$table->SetFillColor(2,0,3,2,'yellow');
...</span></pre></td></tr></table></div><p>
</p>
<p>Finally we give some concluding examples to make the usage of these methods more
clear. </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
3
4
5
6
7
8
9
10
11
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">...
// Set the default font color for all table cells
$table->SetColor('darkgray');
// Set the font color for all cells in row one
$table->SetRowColor(1,'darkgray');
// Set the font color for the first two cells in the second row
// (row with index=1)
$table->SetColor(1,0,1,1,'darkgray');
...</span></pre></td></tr></table></div><p>
</p>
<div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>If there are multiple color settings for the same cell then the last method
called before the final Stroke() call will be the color that shows. </p>
<p>For example the following script sets the color of cell (0,0) to both 'black'
and 'yellow' but since the yellow is the last method to be called this is the
color that will be used for cell (0,0) </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
3
4
5
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">...
$table->SetRowColor(0,'black');
$table->SetColColor(0,'yellow');
...
$graph->Stroke();</span></pre></td></tr></table></div><p>
</p>
</div>
<p>Finally, we illustrate the usage of these method by continuing with the previous
example and coloring row 0 as shown in <a class="xref" href="ch19s02.html#fig.table_howto4" title="Figure 19.7. Merging and setting the colors the top row (table_howto4.php)">Figure 19.7. Merging and setting the colors the top row <code class="uri"><a class="uri" href="example_src/table_howto4.html" target="_top">(<code class="filename">table_howto4.php</code>)</a></code> </a></p>
<p>
</p><div class="figure"><a name="fig.table_howto4"></a><p class="title"><b>Figure 19.7. Merging and setting the colors the top row <code class="uri"><a class="uri" href="example_src/table_howto4.html" target="_top">(<code class="filename">table_howto4.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto4.png" alt="Merging and setting the colors the top row (table_howto4.php)"></span> </div></div><p><br class="figure-break">
</p>
<p>The coloring in <a class="xref" href="ch19s02.html#fig.table_howto4" title="Figure 19.7. Merging and setting the colors the top row (table_howto4.php)">Figure 19.7. Merging and setting the colors the top row <code class="uri"><a class="uri" href="example_src/table_howto4.html" target="_top">(<code class="filename">table_howto4.php</code>)</a></code> </a> was accomplished by adding
the following two lines to the previous script. </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetCellFillColor(0,0,'orange@0.7');
$table->SetCellColor(0,0,'darkred');</span></pre></td></tr></table></div><p>
</p>
<p>The same effect could also have been accomplished by using the row version of the
color methods as in </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetRowFillColor(0,'orange@0.7');
$table->SetRowColor(0,'darkred');</span></pre></td></tr></table></div><p>
</p>
<p>Which sets of methods to use in this case is a matter of personal preference since
both achieve the same effect. </p>
</div>
<div class="sect2" title="Adjusting table and cell sizes"><div class="titlepage"><div><div><h3 class="title"><a name="id2580500"></a>Adjusting table and cell sizes</h3></div></div></div>
<p>The exact size of the table can only be indirectly controlled by specifying the
width of the columns and the height of the rows. The width/height can either be
controlled individually on a row by row (or column by column) basis or by giving all
rows/columns the same width/height. This is accomplished by the methods </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">SetMinRowHeight()</code>, Sets the minimum height of rows
</p>
</li><li class="listitem">
<p><code class="code">SetMinColWidth()</code>, Sets the minimum width of columns
</p>
</li></ul></div><p>
</p>
<p>As can be noted from the name of the methods the width and height specified is not
necessarily the exact size of the row/column. It's just the minimum size. The actual
size is depending on the text in the cells. The row height (and column width) will
always grow in order to fit the text within the largest cell. </p>
<p><span class="bold"><strong>Polymorphic functions</strong></span></p>
<p>The number of arguments to the two methods can in fact be either one or two. If
only one argument is supplied then it is interpretated as the minimum width/height
for all columns/rows in the table. If two arguments are used then the first argument
will specify what row/columns the height/width is specified for. </p>
<p>Continuing with the table in <a class="xref" href="ch19s02.html#fig.table_howto4" title="Figure 19.7. Merging and setting the colors the top row (table_howto4.php)">Figure 19.7. Merging and setting the colors the top row <code class="uri"><a class="uri" href="example_src/table_howto4.html" target="_top">(<code class="filename">table_howto4.php</code>)</a></code> </a> . If we want
to make sure that all the cells in row 1 is at least 35 pixels wide we could add to
add the following in the previous script </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
3
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">...
$table->SetMinColWidth(35);
...</span></pre></td></tr></table></div><p>
</p>
<p>Which would then give the table shown in <a class="xref" href="ch19s02.html#fig.table_howto6" title="Figure 19.8. Setting the minimum column width to 35 pixels. (table_howto6.php)">Figure 19.8. Setting the minimum column width to 35 pixels. <code class="uri"><a class="uri" href="example_src/table_howto6.html" target="_top">(<code class="filename">table_howto6.php</code>)</a></code> </a></p>
<p>
</p><div class="figure"><a name="fig.table_howto6"></a><p class="title"><b>Figure 19.8. Setting the minimum column width to 35 pixels. <code class="uri"><a class="uri" href="example_src/table_howto6.html" target="_top">(<code class="filename">table_howto6.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto6.png" alt="Setting the minimum column width to 35 pixels. (table_howto6.php)"></span> </div></div><p><br class="figure-break">
</p>
</div>
<div class="sect2" title="Fine tuning cell alignment and cell padding"><div class="titlepage"><div><div><h3 class="title"><a name="id2580951"></a>Fine tuning cell alignment and cell padding</h3></div></div></div>
<p>The final bit of important formatting is the ability to specify the alignment of
the data in each of the cells within the table. It is possible to specify both the
horizontal and vertical alignment. The alignment can be specified as one of </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>Horizontal alignment: "left", "right", "center" </p>
</li><li class="listitem">
<p>Vertical alignment: "top", "bottom", "center" </p>
</li></ul></div><p>
</p>
<p>As usual there are four variants of the alignment methods </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">SetAlign()</code>, Set the align for a range of cells or the
entire table </p>
</li><li class="listitem">
<p><code class="code">SetRowAlign()</code>, Set the alignment for an entire row
</p>
</li><li class="listitem">
<p><code class="code">SetColAlign()</code>, Set the alignment for an entire column
</p>
</li><li class="listitem">
<p><code class="code">SetCellAlign()</code>, Set the alignment for a specific cell
</p>
</li></ul></div><p>
</p>
<p>Each of the methods accepts two alignment arguments, the horizontal and the
vertical alignment. We don't give any examples here since the usage of these methods
should be obvious. </p>
<p>
</p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>It should be mentioned that in addition to using these methods the
alignment can also be set when using the merge methods (as discussed above).
This is purely as a convenience since it is such a common use case to adjust
the alignment when merging cells. </p>
</div><p>
</p>
</div>
<div class="sect2" title="Adjusting border and grid lines"><div class="titlepage"><div><div><h3 class="title"><a name="id2581054"></a>Adjusting border and grid lines</h3></div></div></div>
<p>The final formatting option available is the shape, size and color of the border
and grid lines in the table. As of this writing the library supports the following
styles of grid lines. </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">TGRID_SINGLE</code>, a basic solid line of specified width and
color (default) </p>
</li><li class="listitem">
<p><code class="code">TGRID_DOUBLE</code>, two lines of equal width separated by the
same width as the line width. </p>
</li><li class="listitem">
<p><code class="code">TGRID_DOUBLE2</code>, two lines where the left/top line is twice
as thick as the bottom/right line. </p>
</li></ul></div><p>
</p>
<p>
</p><div class="informaltable">
<table border="0"><colgroup><col class="c1"><col class="c2"></colgroup><tbody><tr><td>
<div class="figure"><a name="fig.table_howto7.1"></a><p class="title"><b>Figure 19.9. Double lines 1 <code class="uri"><a class="uri" href="example_src/table_howto7.1.html" target="_top">(<code class="filename">table_howto7.1.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto7.1.png" alt="Double lines 1 (table_howto7.1.php)"></span> </div></div><br class="figure-break">
</td><td>
<div class="figure"><a name="fig.table_howto7.2"></a><p class="title"><b>Figure 19.10. Double lines 2 <code class="uri"><a class="uri" href="example_src/table_howto7.2.html" target="_top">(<code class="filename">table_howto7.2.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto7.2.png" alt="Double lines 2 (table_howto7.2.php)"></span> </div></div><br class="figure-break">
</td></tr></tbody></table>
</div><p>
</p>
<p>The methods available to adjust the grid lines are </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">SetGrid()</code>, Set the grid line style for all grid lines
</p>
</li><li class="listitem">
<p><code class="code">SetColGrid()</code>, Set the specified vertical grid line
</p>
</li><li class="listitem">
<p><code class="code">SetRowGrid()</code>, Set the specified horizontal grid line
</p>
</li></ul></div><p>
</p>
<p>The borders in <a class="xref" href="ch19s02.html#fig.table_howto7.1" title="Figure 19.9. Double lines 1 (table_howto7.1.php)">Figure 19.9. Double lines 1 <code class="uri"><a class="uri" href="example_src/table_howto7.1.html" target="_top">(<code class="filename">table_howto7.1.php</code>)</a></code> </a> was modified by adding the
following call to the basic table script. </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetRowGrid(2,1,'black',TGRID_DOUBLE);</span></pre></td></tr></table></div><p>
</p>
<p>and in <a class="xref" href="ch19s02.html#fig.table_howto7.2" title="Figure 19.10. Double lines 2 (table_howto7.2.php)">Figure 19.10. Double lines 2 <code class="uri"><a class="uri" href="example_src/table_howto7.2.html" target="_top">(<code class="filename">table_howto7.2.php</code>)</a></code> </a>
</p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetRowGrid(2,1,'black',TGRID_DOUBLE2);</span></pre></td></tr></table></div><p>
</p>
<p>The order of the arguments are 1) Row, 2) Width (weight) and 3) Line style. </p>
<p>Finally, in order to adjust the outer border of the table there is one last method
available </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">SetBorder()</code>, Set the width and color of the outer border
</p>
</li></ul></div><p>
</p>
<p>
</p><div class="tip" title="Tip" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Tip</h3>
<p>In order to remove a specific grid line or the border the width is
specified as 0 </p>
</div><p>
</p>
<p>As a final example the following script snippet removes many of the grid lines and
borders by adding the following lines to the previous basic table script. </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
2
3
4
5
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">...
$table->SetBorder(0);
$table->SetGrid(0);
$table->SetRowGrid(2,1,'black',TGRID_DOUBLE2);
...</span></pre></td></tr></table></div><p>
</p>
<p>The result of this modification is shown in <a class="xref" href="ch19s02.html#fig.table_howto8" title="Figure 19.11. Removing some grid lines and border. In addition we have right aligned all the cells as is common practice for numeric data. (table_howto8.php)">Figure 19.11. Removing some grid lines and border. In addition we have right aligned all the cells as is common practice for numeric data. <code class="uri"><a class="uri" href="example_src/table_howto8.html" target="_top">(<code class="filename">table_howto8.php</code>)</a></code> </a>
below. </p>
<p>
</p><div class="figure"><a name="fig.table_howto8"></a><p class="title"><b>Figure 19.11. Removing some grid lines and border. In addition we have right aligned all the cells as is common practice for numeric data. <code class="uri"><a class="uri" href="example_src/table_howto8.html" target="_top">(<code class="filename">table_howto8.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto8.png" alt="Removing some grid lines and border. In addition we have right aligned all the cells as is common practice for numeric data. (table_howto8.php)"></span> </div></div><p><br class="figure-break">
</p>
</div>
<div class="sect2" title="Specific number formatting"><div class="titlepage"><div><div><h3 class="title"><a name="id2581394"></a>Specific number formatting</h3></div></div></div>
<p>The final method of formatting we will briefly touch upon is the number
formatting. By setting a specific number formatting it is possible to have numeric
values formatted in a uniform way regardless of the original format. The number
format is the same format string that would be used with the <code class="code">printf()</code>
family. </p>
<p>The available methods for this formatting follows the usual structure </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">SetNumberFormat()</code>, Set the number format for a range or
the whole table </p>
</li><li class="listitem">
<p><code class="code">SetRowNumberFormat()</code>, Set the number format for a
specific row </p>
</li><li class="listitem">
<p><code class="code">SetColNumberFormat()</code>, Set the number format for a
specific column </p>
</li><li class="listitem">
<p><code class="code">SetCellNumberFormat()</code>, Set the number format for a
specific cell </p>
</li></ul></div><p>
</p>
<p>To illustrate the use of this formatting we start with the table in <a class="xref" href="ch19s02.html#fig.table_howto8" title="Figure 19.11. Removing some grid lines and border. In addition we have right aligned all the cells as is common practice for numeric data. (table_howto8.php)">Figure 19.11. Removing some grid lines and border. In addition we have right aligned all the cells as is common practice for numeric data. <code class="uri"><a class="uri" href="example_src/table_howto8.html" target="_top">(<code class="filename">table_howto8.php</code>)</a></code> </a>. and apply the format string
<code class="code">"%0.1f"</code> which will format the values as floating point values with
one decimal. We do this by adding the method following method call</p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetNumberFormat('%0.1f');</span></pre></td></tr></table></div><p>
</p>
<p>
</p><div class="figure"><a name="fig.table_howto9"></a><p class="title"><b>Figure 19.12. Applying a number format to the data in the cells <code class="uri"><a class="uri" href="example_src/table_howto9.html" target="_top">(<code class="filename">table_howto9.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_howto9.png" alt="Applying a number format to the data in the cells (table_howto9.php)"></span> </div></div><p><br class="figure-break">
</p>
<p>
</p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>The number format will only set the number format it will not do any
rounding of the actual values. This is the responsibility of the client.
</p>
</div><p>
</p>
</div>
<div class="sect2" title="Using images and country flags in the table"><div class="titlepage"><div><div><h3 class="title"><a name="id2581540"></a>Using images and country flags in the table</h3></div></div></div>
<p>In addition to ordinary text it is also possible to have arbitrary images (read
from a file) or use one of the built-in country flags available in the library as
background images in the table cells. </p>
<p>
</p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>Remember to include "<code class="filename">jpgraph_iconplot.php</code>" if images
should be included and "<code class="filename">jpgraph_flags.php</code>" if country
flags are included.</p>
</div><p>
</p>
<p>The methods available for this purpose are </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="code">SetImage()</code>, Set the same image for all cells or a range
of cells </p>
</li><li class="listitem">
<p><code class="code">SetCellImage()</code>, Set the image for a specific cell </p>
</li><li class="listitem">
<p><code class="code">SetRowImage()</code>, Set the image for a row of cells </p>
</li><li class="listitem">
<p><code class="code">SetColImage()</code>, Set the image for a column of cells
</p>
</li><li class="listitem">
<p><code class="code">SetCellImageConstrain()</code>, Set the height or width of an
image in a specified cell </p>
</li><li class="listitem">
<p><code class="code">SetCellCountryFlag()</code>, Use a specified country flag as
image in a specified cell </p>
</li></ul></div><p>
</p>
<p>For example, to add the United Kingdoms flag in cell (2,1) in the table one would
have to add the call </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetCellCountryFlag(2,1,'united kingdom');</span></pre></td></tr></table></div><p>
</p>
<p>as usual with the background images it is possible to scale it and also adjust the
mix-in factor by using additional arguments to the above methods. </p>
<p>However there is on extra feature available with images and tables. If we wanted
to make sure that the flag is of a specific height or width it is possible to
specify this and have the library auto-scale the image to fit the specified
parameter. </p>
<p>For example to restrict the height of the UK flag set in cell (2,1) to 20 pixels
the call would be </p>
<p>
</p><div class="hl-main"><table class="hl-table" width="100%"><tr><td class="hl-gutter" align="right" valign="top"><pre>1
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-code">$table->SetCellImageConstrain(2,1,TIMG_HEIGHT,20);</span></pre></td></tr></table></div><p>
</p>
<p>We conclude this section with a small example on the use of country flags in a
table in <a class="xref" href="ch19s02.html#fig.table_flagex1" title="Figure 19.13. Using country flags in the table cells (table_flagex1.php)">Figure 19.13. Using country flags in the table cells <code class="uri"><a class="uri" href="example_src/table_flagex1.html" target="_top">(<code class="filename">table_flagex1.php</code>)</a></code> </a></p>
<p>
</p><div class="figure"><a name="fig.table_flagex1"></a><p class="title"><b>Figure 19.13. Using country flags in the table cells <code class="uri"><a class="uri" href="example_src/table_flagex1.html" target="_top">(<code class="filename">table_flagex1.php</code>)</a></code> </b></p><div class="figure-contents"> <span class="inlinemediaobject"><img src="images/table_flagex1.png" alt="Using country flags in the table cells (table_flagex1.php)"></span> </div></div><p><br class="figure-break">
</p>
</div>
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