d72ac078
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Ajout graphe V1.1
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Installing and configuring Font support</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="ch03.html" title="Chapter 3. The Long Version: Installing the Library"></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">Installing and configuring Font support</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center">Chapter 3. The Long Version: Installing the Library</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="sect1" title="Installing and configuring Font support"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="sec1.installing-fonts"></a>Installing and configuring Font support</h2></div></div></div>
<p>JpGraph supports two types of fonts, bitmap and TTF fonts. The advantage with
bitmap fonts are that they are supported from within the library without further
configuration. TTF fonts require some configuration and possible installation of the
actual TTF font specification file. (For more on installing TTF fonts see <a class="xref" href="ch03s04.html#sec1.getting_add_fonts" title="Configuring TTF fonts">Configuring TTF fonts</a>.) </p>
<p>The drawbacks, on the other hand, with bitmap fonts are quite a few</p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>they look quite crude and are only available in a few sizes</p>
</li><li class="listitem">
<p>italic font style is not supported for bitmap fonts</p>
</li><li class="listitem">
<p>they only support 7-bit ASCII characters</p>
</li><li class="listitem">
<p>they only support 0 and 90 degree rotated text</p>
</li></ul></div><p>
</p>
<p>You can read more about how to use and select among the different fonts in <a class="xref" href="ch08.html" title="Chapter 8. Text and font handling">Chapter 8. <i>Text and font handling</i></a></p>
<div class="sect2" title="Configuring TTF fonts"><div class="titlepage"><div><div><h3 class="title"><a name="sec1.getting_add_fonts"></a>Configuring TTF fonts</h3></div></div></div>
<p>
</p><div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>This could be considered an optional section since the library will
work even without TTF fonts. However, for th reasons listed previously
it is strongly recommended that TTF support is configured.</p>
</div><p>
</p>
<p>In the following we will assume that the FreeType library is enabled and
verified in the PHP installation (See <a class="xref" href="ch03s02.html#fig.phpinfo-gd" title="Figure 3.2. phphinfo() GD-Information">Figure 3.2. phphinfo() GD-Information</a>)</p>
<p>Due to various legal issues no TTF fonts are included in the distribution of
JpGraph since many commonly used TTF font files are copyrighted and there
distribution restricted. For the most commonly used WEB-fonts (the Microsoft
Core Fonts) the status is unclear. For many years Microsoft distributed them
freely but they are no longer available from Microsofts home page. Instead they
are available from <code class="uri"><a class="uri" href="http://corefonts.sourceforge.net/" target="_top">http://corefonts.sourceforge.net/</a></code>
</p>
<p>There are however a fair amount of freely available high quality TTF fonts
(see below). The first thing needed is to make sure that the path defines in the
file <code class="filename">jpg-config.inc.php</code> corresponds to the server setup (so
that the library can find the font files)</p>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<p>Open <code class="filename">jpg-config.inc.php</code> for editing</p>
</li><li class="listitem">
<p>Locate the define <code class="code">TTF_DIR</code> (this is the define that
possible needs updating depending on your system). By default this path
will have a sensible values depending on if the library is installed on
a Windows or a Unix system.</p>
</li><li class="listitem">
<p>If you are on a Windows platform you can just point the TTF directory
path in JpGraph to use the standard Window font directory (e.g
<code class="filename">C:\windows\fonts\</code>)</p>
</li><li class="listitem">
<p>If you are on a Unix platform, which may not have any TTF fonts
installed, you can download and install the core MS WEB-initiative fonts
from <code class="uri"><a class="uri" href="http://corefonts.sourceforge.net/" target="_top">http://corefonts.sourceforge.net/</a></code>
many Linux distributions also have automatic ways to install these
fonts. These fonts were put in the public domain by the Microsoft
Corporation but they are no longer available directly from
Microsoft.</p>
</li><li class="listitem">
<p>You can also chose to install the freely available Vera Bitstream TTF
fonts available from <code class="uri"><a class="uri" href="http://www.gnome.org/fonts/" target="_top">http://www.gnome.org/fonts/</a></code></p>
</li><li class="listitem">
<p>You can also chose to install the freely available DejaVu TTF fonts <code class="uri"><a class="uri" href="http://sourceforge.net/projects/dejavu/" target="_top">http://sourceforge.net/projects/dejavu</a></code></p>
</li></ol></div>
<p>JpGraph uses a standard naming convention for the TTF font files in order to
be able to find the correct font file that correspond to a particular font
family. This naming convention follows the standard naming of the available font
files from the distributions listed above. </p>
<p>If the installation of the library is made on a computer running MS Windows
then it is recommended to use the already available font files in Windows
(usually located in <code class="filename">C:\WINDOWS\FONTS</code>). </p>
<p>If the installation is made on a UNIX derivate running X11 then the font
location can differ between versions and UNIX brands. One commonly used path in
modern installations are "<code class="filename">/usr/share/fonts/truetype/</code>" (In
older installations it was common to put the truetype fonts under
"<code class="filename">/usr/X11R6/lib/X11/fonts/truetype/</code>".)</p>
<p>Finally we note that it is possible to install additional fonts not natively
supported by the library by using the <code class="code">SetUserFont()</code> family of
methods. (In theory it is also possible to patch the jpgraph source files to
include support for other font files natively but since this requires code
modifications of the library we do not discuss this further here in the
introduction.)</p>
<p>Freely available TTF fonts can be found, for example, from</p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p><code class="uri"><a class="uri" href="http://www.webfontlist.com" target="_top">http://www.webfontlist.com</a></code></p>
</li><li class="listitem">
<p><code class="uri"><a class="uri" href="http://www.webpagepublicity.com/free-fonts.html" target="_top">http://www.webpagepublicity.com/free-fonts.html</a></code></p>
</li><li class="listitem">
<p><code class="uri"><a class="uri" href="http://www.fontonic.com/fonts.asp?width=do&offset=120" target="_top">http://www.fontonic.com/fonts.asp?width=do&offset=120</a></code></p>
</li><li class="listitem">
<p><code class="uri"><a class="uri" href="http://www.fontspace.com/category/famous" target="_top">http://www.fontspace.com/category/famous</a></code></p>
</li></ul></div><p>
</p>
</div>
<div class="sect2" title="Using non-latin based fonts with JpGraph"><div class="titlepage"><div><div><h3 class="title"><a name="sec2.using-non-latin-fonts"></a>Using non-latin based fonts with JpGraph</h3></div></div></div>
<p>In addition to European fonts it is also possible to use non-latin based fonts
such as Cyrillic, Japanese, Chinese, Hebrew and Greek. For any of these
languages a suitable TTF font that supports the non-latin based language must be
made available to the library. Some specific rules also applies to each of the
supported languages due to the necessary character encoding needed due to
different convention when writing the character for some languages. </p>
<p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<p>For Cyrillic support the define <code class="code">LANGUAGE_CYRILLIC</code> in
<code class="filename">jpg-config.php</code> must be set to
<code class="code">true</code>. It is then possible to use a suitable
Cyrillic font as replacement of the ordinary font. This setting
combined with the <code class="code">CYRILLIC_FROM_WINDOWS</code> and
<code class="code">LANGUAGE_CHARSET</code> is used to fine tune the handling
cyrillic input. The rules are as follows:</p>
<p>
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<p>If <code class="code">LANGUAGE_CYRILLIC</code> is <span class="bold"><strong>false</strong></span> no specific handling of
Cyrillic characters at all will be done.</p>
</li><li class="listitem">
<p>If <code class="code">CYRILLIC_FROM_WINDOWS</code> is <span class="bold"><strong>true</strong></span> then it will be assumed
the input coding by default is encoded using <span class="bold"><strong>WINDOWS-1251</strong></span>. </p>
<p>The conversion is then done via a call to
<code class="code">convert_cyr_string($aTxt, 'w', 'k')</code>
where <code class="code">$aTxt</code> is replaced with the input
string to be encoded.</p>
</li><li class="listitem">
<p>If <code class="code">CYRILLIC_FROM_WINDOWS</code> is <span class="bold"><strong>false</strong></span> then it will be assumed
the input coding by default is encoded using <span class="bold"><strong>KOI8-R</strong></span>.</p>
<p>The conversion is then done via the sequence of
callls</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
</pre></td><td class="hl-main" valign="top"><pre><span class="hl-inlinetags"><?php</span><span class="hl-code">
</span><span class="hl-var">$isostring</span><span class="hl-code"> = </span><span class="hl-identifier">convert_cyr_string</span><span class="hl-brackets">(</span><span class="hl-var">$aTxt</span><span class="hl-code">, </span><span class="hl-quotes">"</span><span class="hl-string">k</span><span class="hl-quotes">"</span><span class="hl-code">, </span><span class="hl-quotes">"</span><span class="hl-string">i</span><span class="hl-quotes">"</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-var">$unistring</span><span class="hl-code"> = </span><span class="hl-identifier">LanguageConv</span><span class="hl-code">::</span><span class="hl-identifier">iso2uni</span><span class="hl-brackets">(</span><span class="hl-var">$isostring</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-inlinetags">?></span></pre></td></tr></table></div><p>
</p>
<p>in oder to get a proper utf-8 internal encoding
(internally the library only uses utf-8 encoding)</p>
</li><li class="listitem">
<p><code class="code">LANGUAGE_CHARSET</code> can be used to
dynamically adjust the conversion of the input character
set when using cyrillic characters. This constant is
used to auto-detect whether cyrillic conversion is
really necessary if enabled (via the If
<code class="code">LANGUAGE_CYRILLIC</code>=true) . This constant
can be set to a variable containing the currently used
character input set .A typical such string would be
'UTF-8' or 'utf-8' (the comparison is case-insensitive).
If this charset is not 'koi8-r' nor 'windows-1251'
derivate then no conversion is done. </p>
</li></ol></div><p>
</p>
<p></p>
</li><li class="listitem">
<p>For Chinese character set JpGraph supports both BIG5 and GB2312
encoding. For BIG5 encoding the PHP installation must have support
for the "<code class="code">iconv()</code>" function. Furthermore the define
<code class="code">CHINESE_TTF_FONT</code> must be set to the name of the
Chinese BIG5 font that is to be used. By default this is set to
"<code class="filename">bkai00mp.ttf</code>". To use the Chinese BIG5
font in the scripts one must then specify the font family as
<code class="code">FF_CHINESE</code>.</p>
<p>To use the alternative font files
"<code class="filename">simsun.ttc</code>" and
"<code class="filename">simhei.ttf</code>" (which uses the GB2312
encoding) the only step needed is to install those fonts in the
normal TTF font directory and then specify the font family as
<code class="code">FF_SIMSUN</code>, the "<code class="filename">simhei.ttf</code>" is
used when the font style is specified as
<code class="code">FS_BOLD</code>.</p>
</li></ul></div><p>
</p>
</div>
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