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<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
<html><head><title>QFontDatabase Class Reference</title><style>h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm }
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</style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr /><td align="left" valign="top" width="32"><img align="left" border="0" height="32" src="images/rb-logo.png" width="32" /></td><td width="1">  </td><td class="postheader" valign="center"><a href="../pyqt4ref.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a></td></table><h1 align="center">QFontDatabase Class Reference<br /><sup><sup>[<a href="qtgui.html">QtGui</a> module]</sup></sup></h1><p>The QFontDatabase class provides information about the fonts available in the underlying window system. <a href="#details">More...</a></p>
<h3>Types</h3><ul><li><div class="fn" />enum <b><a href="qfontdatabase.html#WritingSystem-enum">WritingSystem</a></b> { Any, Latin, Greek, Cyrillic, ..., WritingSystemsCount }</li></ul><h3>Methods</h3><ul><li><div class="fn" /><b><a href="qfontdatabase.html#QFontDatabase">__init__</a></b> (<i>self</i>)</li><li><div class="fn" /><b><a href="qfontdatabase.html#QFontDatabase-2">__init__</a></b> (<i>self</i>, QFontDatabase)</li><li><div class="fn" />bool <b><a href="qfontdatabase.html#bold">bold</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i>)</li><li><div class="fn" />QStringList <b><a href="qfontdatabase.html#families">families</a></b> (<i>self</i>, WritingSystem <i>writingSystem</i> = QFontDatabase.Any)</li><li><div class="fn" />QFont <b><a href="qfontdatabase.html#font">font</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i>, int <i>pointSize</i>)</li><li><div class="fn" />bool <b><a href="qfontdatabase.html#isBitmapScalable">isBitmapScalable</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i> = QString())</li><li><div class="fn" />bool <b><a href="qfontdatabase.html#isFixedPitch">isFixedPitch</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i> = QString())</li><li><div class="fn" />bool <b><a href="qfontdatabase.html#isScalable">isScalable</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i> = QString())</li><li><div class="fn" />bool <b><a href="qfontdatabase.html#isSmoothlyScalable">isSmoothlyScalable</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i> = QString())</li><li><div class="fn" />bool <b><a href="qfontdatabase.html#italic">italic</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i>)</li><li><div class="fn" />int-list <b><a href="qfontdatabase.html#pointSizes">pointSizes</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i> = QString())</li><li><div class="fn" />int-list <b><a href="qfontdatabase.html#smoothSizes">smoothSizes</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i>)</li><li><div class="fn" />QStringList <b><a href="qfontdatabase.html#styles">styles</a></b> (<i>self</i>, QString <i>family</i>)</li><li><div class="fn" />QString <b><a href="qfontdatabase.html#styleString">styleString</a></b> (<i>self</i>, QFont <i>font</i>)</li><li><div class="fn" />QString <b><a href="qfontdatabase.html#styleString-2">styleString</a></b> (<i>self</i>, QFontInfo <i>fontInfo</i>)</li><li><div class="fn" />int <b><a href="qfontdatabase.html#weight">weight</a></b> (<i>self</i>, QString <i>family</i>, QString <i>style</i>)</li><li><div class="fn" />QFontDatabase.WritingSystem-list <b><a href="qfontdatabase.html#writingSystems">writingSystems</a></b> (<i>self</i>)</li></ul><h3>Static Methods</h3><ul><li><div class="fn" />int-list <b><a href="qfontdatabase.html#standardSizes">standardSizes</a></b> ()</li><li><div class="fn" />QString <b><a href="qfontdatabase.html#writingSystemName">writingSystemName</a></b> (WritingSystem <i>writingSystem</i>)</li><li><div class="fn" />QString <b><a href="qfontdatabase.html#writingSystemSample">writingSystemSample</a></b> (WritingSystem <i>writingSystem</i>)</li></ul><a name="details" /><hr /><h2>Detailed Description</h2><p>The QFontDatabase class provides information about the fonts available in the underlying window system.</p>
<p>The most common uses of this class are to query the database for the list of font <a href="qfontdatabase.html#families">families</a>() and for the <a href="qfontdatabase.html#pointSizes">pointSizes</a>() and <a href="qfontdatabase.html#styles">styles</a>() that are available for each family. An alternative to <a href="qfontdatabase.html#pointSizes">pointSizes</a>() is <a href="qfontdatabase.html#smoothSizes">smoothSizes</a>() which returns the sizes at which a given family and style will look attractive.</p>
<p>If the font family is available from two or more foundries the foundry name is included in the family name, e.g. "Helvetica [Adobe]" and "Helvetica [Cronyx]". When you specify a family you can either use the old hyphenated Qt 2.x "foundry-family" format, e.g. "Cronyx-Helvetica", or the new bracketed Qt 3.x "family [foundry]" format e.g. "Helvetica [Cronyx]". If the family has a foundry it is always returned, e.g. by <a href="qfontdatabase.html#families">families</a>(), using the bracketed format.</p>
<p>The <a href="qfontdatabase.html#font">font</a>() function returns a <a href="qfont.html">QFont</a> given a family, style and point size.</p>
<p>A family and style combination can be checked to see if it is <a href="qfontdatabase.html#italic">italic</a>() or <a href="qfontdatabase.html#bold">bold</a>(), and to retrieve its <a href="qfontdatabase.html#weight">weight</a>(). Similarly we can call <a href="qfontdatabase.html#isBitmapScalable">isBitmapScalable</a>(), <a href="qfontdatabase.html#isSmoothlyScalable">isSmoothlyScalable</a>(), <a href="qfontdatabase.html#isScalable">isScalable</a>() and <a href="qfontdatabase.html#isFixedPitch">isFixedPitch</a>().</p>
<p>Use the <a href="qfontdatabase.html#styleString">styleString</a>() to obtain a text version of a style.</p>
<p>The QFontDatabase class also supports some static functions, for example, <a href="qfontdatabase.html#standardSizes">standardSizes</a>(). You can retrieve the description of a writing system using <a href="qfontdatabase.html#writingSystemName">writingSystemName</a>(), and a sample of characters in a writing system with <a href="qfontdatabase.html#writingSystemSample">writingSystemSample</a>().</p>
<p>Example:</p>
<pre>
#include <qapplication.h>
#include <qfontdatabase.h>
int main(int argc, char **argv)
{
QApplication app(argc, argv);
QFontDatabase fdb;
QStringList families = fdb.families();
for (QStringList.Iterator f = families.begin(); f != families.end(); ++f) {
QString family = *f;
qDebug(family);
QStringList styles = fdb.styles(family);
for (QStringList.Iterator s = styles.begin(); s != styles.end(); ++s) {
QString style = *s;
QString dstyle = "\t" + style + " (";
QList<int> smoothies = fdb.smoothSizes(family, style);
for (QList<int>.Iterator points = smoothies.begin();
points != smoothies.end(); ++points) {
dstyle += QString.number(*points) + " ";
}
dstyle = dstyle.left(dstyle.length() - 1) + ")";
qDebug(dstyle);
}
}
return 0;
}
</pre>
<p>This example gets the list of font families, then the list of styles for each family and the point sizes that are available for each family/style combination.</p>
<hr /><h2>Type Documentation</h2><h3 class="fn"><a name="WritingSystem-enum" />QFontDatabase.WritingSystem</h3><table border="1" cellpadding="2" cellspacing="1" width="40%">
<tr>
<th width="60%">Constant</th>
<th width="40%">Value</th>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Any</tt></td>
<td align="center" valign="top"><tt>0</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Latin</tt></td>
<td align="center" valign="top"><tt>1</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Greek</tt></td>
<td align="center" valign="top"><tt>2</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Cyrillic</tt></td>
<td align="center" valign="top"><tt>3</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Armenian</tt></td>
<td align="center" valign="top"><tt>4</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Hebrew</tt></td>
<td align="center" valign="top"><tt>5</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Arabic</tt></td>
<td align="center" valign="top"><tt>6</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Syriac</tt></td>
<td align="center" valign="top"><tt>7</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Thaana</tt></td>
<td align="center" valign="top"><tt>8</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Devanagari</tt></td>
<td align="center" valign="top"><tt>9</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Bengali</tt></td>
<td align="center" valign="top"><tt>10</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Gurmukhi</tt></td>
<td align="center" valign="top"><tt>11</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Gujarati</tt></td>
<td align="center" valign="top"><tt>12</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Oriya</tt></td>
<td align="center" valign="top"><tt>13</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Tamil</tt></td>
<td align="center" valign="top"><tt>14</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Telugu</tt></td>
<td align="center" valign="top"><tt>15</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Kannada</tt></td>
<td align="center" valign="top"><tt>16</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Malayalam</tt></td>
<td align="center" valign="top"><tt>17</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Sinhala</tt></td>
<td align="center" valign="top"><tt>18</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Thai</tt></td>
<td align="center" valign="top"><tt>19</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Lao</tt></td>
<td align="center" valign="top"><tt>20</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Tibetan</tt></td>
<td align="center" valign="top"><tt>21</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Myanmar</tt></td>
<td align="center" valign="top"><tt>22</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Georgian</tt></td>
<td align="center" valign="top"><tt>23</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Khmer</tt></td>
<td align="center" valign="top"><tt>24</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.SimplifiedChinese</tt></td>
<td align="center" valign="top"><tt>25</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.TraditionalChinese</tt></td>
<td align="center" valign="top"><tt>26</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Japanese</tt></td>
<td align="center" valign="top"><tt>27</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Korean</tt></td>
<td align="center" valign="top"><tt>28</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Vietnamese</tt></td>
<td align="center" valign="top"><tt>29</tt></td>
</tr>
<tr>
<td valign="top"><tt>QFontDatabase.Other</tt></td>
<td align="center" valign="top"><tt>30</tt></td>
</tr>
</table>
<br />
<br />
<hr /><h2>Method Documentation</h2><h3 class="fn"><a name="QFontDatabase" />QFontDatabase.__init__ (<i>self</i>)</h3><p>Creates a font database object.</p>
<h3 class="fn"><a name="QFontDatabase-2" />QFontDatabase.__init__ (<i>self</i>, <a href="qfontdatabase.html">QFontDatabase</a>)</h3><h3 class="fn"><a name="bold" />bool QFontDatabase.bold (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i>)</h3><p>Returns true if the font that has family <i>family</i> and style <i>style</i> is bold; otherwise returns false.</p>
<p>See also <a href="qfontdatabase.html#italic">italic</a>() and <a href="qfontdatabase.html#weight">weight</a>().</p>
<h3 class="fn"><a name="families" /><a href="qstringlist.html">QStringList</a> QFontDatabase.families (<i>self</i>, <a href="qfontdatabase.html#WritingSystem-enum">WritingSystem</a> <i>writingSystem</i> = QFontDatabase.Any)</h3><p>Returns a sorted list of the available font families which support the <i>writingSystem</i>.</p>
<p>If a family exists in several foundries, the returned name for that font is in the form "family [foundry]". Examples: "Times [Adobe]", "Times [Cronyx]", "Palatino".</p>
<p>See also <a href="qfontdatabase.html#writingSystems">writingSystems</a>().</p>
<h3 class="fn"><a name="font" /><a href="qfont.html">QFont</a> QFontDatabase.font (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i>, int <i>pointSize</i>)</h3><p>Returns a <a href="qfont.html">QFont</a> object that has family <i>family</i>, style <i>style</i> and point size <i>pointSize</i>. If no matching font could be created, a <a href="qfont.html">QFont</a> object that uses the application's default font is returned.</p>
<h3 class="fn"><a name="isBitmapScalable" />bool QFontDatabase.isBitmapScalable (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i> = QString())</h3><p>Returns true if the font that has family <i>family</i> and style <i>style</i> is a scalable bitmap font; otherwise returns false. Scaling a bitmap font usually produces an unattractive hardly readable result, because the pixels of the font are scaled. If you need to scale a bitmap font it is better to scale it to one of the fixed sizes returned by <a href="qfontdatabase.html#smoothSizes">smoothSizes</a>().</p>
<p>See also <a href="qfontdatabase.html#isScalable">isScalable</a>() and <a href="qfontdatabase.html#isSmoothlyScalable">isSmoothlyScalable</a>().</p>
<h3 class="fn"><a name="isFixedPitch" />bool QFontDatabase.isFixedPitch (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i> = QString())</h3><p>Returns true if the font that has family <i>family</i> and style <i>style</i> is fixed pitch; otherwise returns false.</p>
<h3 class="fn"><a name="isScalable" />bool QFontDatabase.isScalable (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i> = QString())</h3><p>Returns true if the font that has family <i>family</i> and style <i>style</i> is scalable; otherwise returns false.</p>
<p>See also <a href="qfontdatabase.html#isBitmapScalable">isBitmapScalable</a>() and <a href="qfontdatabase.html#isSmoothlyScalable">isSmoothlyScalable</a>().</p>
<h3 class="fn"><a name="isSmoothlyScalable" />bool QFontDatabase.isSmoothlyScalable (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i> = QString())</h3><p>Returns true if the font that has family <i>family</i> and style <i>style</i> is smoothly scalable; otherwise returns false. If this function returns true, it's safe to scale this font to any size, and the result will always look attractive.</p>
<p>See also <a href="qfontdatabase.html#isScalable">isScalable</a>() and <a href="qfontdatabase.html#isBitmapScalable">isBitmapScalable</a>().</p>
<h3 class="fn"><a name="italic" />bool QFontDatabase.italic (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i>)</h3><p>Returns true if the font that has family <i>family</i> and style <i>style</i> is italic; otherwise returns false.</p>
<p>See also <a href="qfontdatabase.html#weight">weight</a>() and <a href="qfontdatabase.html#bold">bold</a>().</p>
<h3 class="fn"><a name="pointSizes" />int-list QFontDatabase.pointSizes (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i> = QString())</h3><p>Returns a list of the point sizes available for the font that has family <i>family</i> and style <i>style</i>. The list may be empty.</p>
<p>See also <a href="qfontdatabase.html#smoothSizes">smoothSizes</a>() and <a href="qfontdatabase.html#standardSizes">standardSizes</a>().</p>
<h3 class="fn"><a name="smoothSizes" />int-list QFontDatabase.smoothSizes (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i>)</h3><p>Returns the point sizes of a font that has family <i>family</i> and style <i>style</i> that will look attractive. The list may be empty. For non-scalable fonts and bitmap scalable fonts, this function is equivalent to <a href="qfontdatabase.html#pointSizes">pointSizes</a>().</p>
<p>See also <a href="qfontdatabase.html#pointSizes">pointSizes</a>() and <a href="qfontdatabase.html#standardSizes">standardSizes</a>().</p>
<h3 class="fn"><a name="standardSizes" />int-list QFontDatabase.standardSizes ()</h3><p>Returns a list of standard font sizes.</p>
<p>See also <a href="qfontdatabase.html#smoothSizes">smoothSizes</a>() and <a href="qfontdatabase.html#pointSizes">pointSizes</a>().</p>
<h3 class="fn"><a name="styles" /><a href="qstringlist.html">QStringList</a> QFontDatabase.styles (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>)</h3><p>Returns a list of the styles available for the font family <i>family</i>. Some example styles: "Light", "Light Italic", "Bold", "Oblique", "Demi". The list may be empty.</p>
<p>See also <a href="qfontdatabase.html#families">families</a>().</p>
<h3 class="fn"><a name="styleString" /><a href="qstring.html">QString</a> QFontDatabase.styleString (<i>self</i>, <a href="qfont.html">QFont</a> <i>font</i>)</h3><p>Returns a string that describes the style of the <i>font</i>. For example, "Bold Italic", "Bold", "Italic" or "Normal". An empty string may be returned.</p>
<h3 class="fn"><a name="styleString-2" /><a href="qstring.html">QString</a> QFontDatabase.styleString (<i>self</i>, <a href="qfontinfo.html">QFontInfo</a> <i>fontInfo</i>)</h3><p>This is an overloaded member function, provided for convenience.</p>
<p>Returns a string that describes the style of the <i>fontInfo</i>. For example, "Bold Italic", "Bold", "Italic" or "Normal". An empty string may be returned.</p>
<h3 class="fn"><a name="weight" />int QFontDatabase.weight (<i>self</i>, <a href="qstring.html">QString</a> <i>family</i>, <a href="qstring.html">QString</a> <i>style</i>)</h3><p>Returns the weight of the font that has family <i>family</i> and style <i>style</i>. If there is no such family and style combination, returns -1.</p>
<p>See also <a href="qfontdatabase.html#italic">italic</a>() and <a href="qfontdatabase.html#bold">bold</a>().</p>
<h3 class="fn"><a name="writingSystemName" /><a href="qstring.html">QString</a> QFontDatabase.writingSystemName (<a href="qfontdatabase.html#WritingSystem-enum">WritingSystem</a> <i>writingSystem</i>)</h3><p>Returns the names the <i>writingSystem</i> (e.g. for displaying to the user in a dialog).</p>
<h3 class="fn"><a name="writingSystems" />QFontDatabase.WritingSystem-list QFontDatabase.writingSystems (<i>self</i>)</h3><p>Returns a sorted list of the available writing systems. This is list generated from information about all installed fonts on the system.</p>
<p>See also <a href="qfontdatabase.html#families">families</a>().</p>
<h3 class="fn"><a name="writingSystemSample" /><a href="qstring.html">QString</a> QFontDatabase.writingSystemSample (<a href="qfontdatabase.html#WritingSystem-enum">WritingSystem</a> <i>writingSystem</i>)</h3><p>Returns a string with sample characters from <i>writingSystem</i>.</p>
<address><hr /><div align="center"><table border="0" cellspacing="0" width="100%"><tr class="address"><td width="25%">PyQt 4.0.1 for X11</td><td align="center" width="50%">Copyright © <a href="http://www.riverbankcomputing.com">Riverbank Computing Ltd</a> and <a href="http://www.trolltech.com">Trolltech AS</a> 2006</td><td align="right" width="25%">Qt 4.1.4</td></tr></table></div></address></body></html>
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