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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="index.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">QStyleOptionGraphicsItem Class Reference<br /><sup><sup>[<a href="qtgui.html">QtGui</a> module]</sup></sup></h1><p>The QStyleOptionGraphicsItem class is used to describe the
parameters needed to draw a <a href="qgraphicsitem.html">QGraphicsItem</a>. <a href="#details">More...</a></p>
<p>Inherits <a href="qstyleoption.html">QStyleOption</a>.</p><h3>Types</h3><ul><li><div class="fn" />enum <b><a href="qstyleoptiongraphicsitem.html#StyleOptionType-enum">StyleOptionType</a></b> { Type }</li><li><div class="fn" />enum <b><a href="qstyleoptiongraphicsitem.html#StyleOptionVersion-enum">StyleOptionVersion</a></b> { Version }</li></ul><h3>Methods</h3><ul><li><div class="fn" /><b><a href="qstyleoptiongraphicsitem.html#QStyleOptionGraphicsItem">__init__</a></b> (<i>self</i>)</li><li><div class="fn" /><b><a href="qstyleoptiongraphicsitem.html#QStyleOptionGraphicsItem-2">__init__</a></b> (<i>self</i>, QStyleOptionGraphicsItem <i>other</i>)</li></ul><h3>Static Methods</h3><ul><li><div class="fn" />float <b><a href="qstyleoptiongraphicsitem.html#levelOfDetailFromTransform">levelOfDetailFromTransform</a></b> (QTransform <i>worldTransform</i>)</li></ul><h3>Members</h3><ul><li><div class="fn" />QRectF <b><a href="qstyleoptiongraphicsitem.html#exposedRect-var">exposedRect</a></b></li><li><div class="fn" />float <b><a href="qstyleoptiongraphicsitem.html#levelOfDetail-var">levelOfDetail</a></b></li><li><div class="fn" />QMatrix <b><a href="qstyleoptiongraphicsitem.html#matrix-var">matrix</a></b></li></ul><a name="details" /><hr /><h2>Detailed Description</h2><p>The QStyleOptionGraphicsItem class is used to describe the
parameters needed to draw a <a href="qgraphicsitem.html">QGraphicsItem</a>.</p>
<p>For performance reasons, the access to the member variables is
direct (i.e., using the <tt>.</tt> or <tt>-></tt> operator).
This low-level feel makes the structures straightforward to use and
emphasizes that these are simply parameters.</p>
<p>For an example demonstrating how style options can be used, see
the <a href="widgets-styles.html">Styles</a> example.</p>
<hr /><h2>Type Documentation</h2><h3 class="fn"><a name="StyleOptionType-enum" />QStyleOptionGraphicsItem.StyleOptionType</h3><p>This enum is used to hold information about the type of the
style option, and is defined for each <a href="qstyleoption.html">QStyleOption</a> subclass.</p>
<table class="valuelist">
<tr class="odd" valign="top">
<th class="tblConst">Constant</th>
<th class="tblval">Value</th>
<th class="tbldscr">Description</th>
</tr>
<tr>
<td class="topAlign"><tt>QStyleOptionGraphicsItem.Type</tt></td>
<td class="topAlign"><tt>SO_GraphicsItem</tt></td>
<td class="topAlign">The type of style option provided (<a href="qstyleoption.html#OptionType-enum">SO_GraphicsItem</a> for this
class).</td>
</tr>
</table>
<p>The type is used internally by <a href="qstyleoption.html">QStyleOption</a>, its subclasses, and <a href="qstyleoption.html#qstyleoption_cast">qstyleoption_cast</a>() to
determine the type of style option. In general you do not need to
worry about this unless you want to create your own <a href="qstyleoption.html">QStyleOption</a> subclass and your own
styles.</p>
<p><b>See also</b> <a href="qstyleoptiongraphicsitem.html#StyleOptionVersion-enum">StyleOptionVersion</a>.</p>
<h3 class="fn"><a name="StyleOptionVersion-enum" />QStyleOptionGraphicsItem.StyleOptionVersion</h3><p>This enum is used to hold information about the version of the
style option, and is defined for each <a href="qstyleoption.html">QStyleOption</a> subclass.</p>
<table class="valuelist">
<tr class="odd" valign="top">
<th class="tblConst">Constant</th>
<th class="tblval">Value</th>
<th class="tbldscr">Description</th>
</tr>
<tr>
<td class="topAlign">
<tt>QStyleOptionGraphicsItem.Version</tt></td>
<td class="topAlign"><tt>1</tt></td>
<td class="topAlign">1</td>
</tr>
</table>
<p>The version is used by <a href="qstyleoption.html">QStyleOption</a> subclasses to implement
extensions without breaking compatibility. If you use <a href="qstyleoption.html#qstyleoption_cast">qstyleoption_cast</a>(), you
normally do not need to check it.</p>
<p><b>See also</b> <a href="qstyleoptiongraphicsitem.html#StyleOptionType-enum">StyleOptionType</a>.</p>
<hr /><h2>Method Documentation</h2><h3 class="fn"><a name="QStyleOptionGraphicsItem" />QStyleOptionGraphicsItem.__init__ (<i>self</i>)</h3><p>Constructs a <a href="qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a>.</p>
<h3 class="fn"><a name="QStyleOptionGraphicsItem-2" />QStyleOptionGraphicsItem.__init__ (<i>self</i>, <a href="qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a> <i>other</i>)</h3><p>Constructs a copy of <i>other</i>.</p>
<h3 class="fn"><a name="levelOfDetailFromTransform" />float QStyleOptionGraphicsItem.levelOfDetailFromTransform (<a href="qtransform.html">QTransform</a> <i>worldTransform</i>)</h3><p>Returns the level of detail from the <i>worldTransform</i>.</p>
<p>Its value represents the maximum value of the height and width
of a unity rectangle, mapped using the <i>worldTransform</i> of the
painter used to draw the item. By default, if no transformations
are applied, its value is 1. If zoomed out 1:2, the level of detail
will be 0.5, and if zoomed in 2:1, its value is 2.</p>
<p>This function was introduced in Qt 4.6.</p>
<hr /><h2>Member Documentation</h2><h3 class="fn"><a name="exposedRect-var" /><a href="qrectf.html">QRectF</a> exposedRect</h3><p>This variable holds the exposed rectangle, in item
coordinates.</p>
<p>Make use of this rectangle to speed up item drawing when only
parts of the item are exposed. If the whole item is exposed, this
rectangle will be the same as <a href="qgraphicsitem.html#boundingRect">QGraphicsItem.boundingRect</a>().</p>
<p>This member is only initialized for items that have the <a href="qgraphicsitem.html#GraphicsItemFlag-enum">QGraphicsItem.ItemUsesExtendedStyleOption</a>
flag set.</p>
<h3 class="fn"><a name="levelOfDetail-var" />float levelOfDetail</h3><h3 class="fn"><a name="matrix-var" /><a href="qmatrix.html">QMatrix</a> matrix</h3><address><hr /><div align="center"><table border="0" cellspacing="0" width="100%"><tr class="address"><td align="left" width="25%">PyQt 4.10.3 for X11</td><td align="center" width="50%">Copyright © <a href="http://www.riverbankcomputing.com">Riverbank Computing Ltd</a> and <a href="http://www.qtsoftware.com">Nokia</a> 2012</td><td align="right" width="25%">Qt 4.8.5</td></tr></table></div></address></body></html>
