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QGraphicsScene.ItemIndexMethod
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com.trolltech.qt.gui</FONT>
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Enum QGraphicsScene.ItemIndexMethod</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by ">java.lang.Enum<<A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A>>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.trolltech.qt.gui.QGraphicsScene.ItemIndexMethod</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../com/trolltech/qt/QtEnumerator.html" title="interface in com.trolltech.qt">QtEnumerator</A>, java.io.Serializable, java.lang.Comparable<<A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A>></DD>
</DL>
<DL>
<DT><B>Enclosing class:</B><DD><A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.html" title="class in com.trolltech.qt.gui">QGraphicsScene</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public static enum <B>QGraphicsScene.ItemIndexMethod</B><DT>extends java.lang.Enum<<A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A>><DT>implements <A HREF="../../../../com/trolltech/qt/QtEnumerator.html" title="interface in com.trolltech.qt">QtEnumerator</A></DL>
</PRE>
<P>
<p>This enum describes the indexing algorithms <a href="QGraphicsScene.html#QGraphicsScene(com.trolltech.qt.core.QRectF, com.trolltech.qt.core.QObject)"><tt>QGraphicsScene</tt></a> provides for managing positional information about items on the scene.</p>
<P>
<P>
<DL>
<DT><B>See Also:</B><DD><a href="QGraphicsScene.html#setItemIndexMethod(com.trolltech.qt.gui.QGraphicsScene.ItemIndexMethod)"><tt>setItemIndexMethod</tt></a>,
<a href="QGraphicsScene.html#bspTreeDepth()"><tt>bspTreeDepth</tt></a></DL>
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<P>
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<TD><CODE><B><A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html#BspTreeIndex">BspTreeIndex</A></B></CODE>
<BR>
A Binary Space Partitioning tree is applied.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html#NoIndex">NoIndex</A></B></CODE>
<BR>
No index is applied.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html#resolve(int)">resolve</A></B>(int value)</CODE>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html#value()">value</A></B>()</CODE>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html#valueOf(java.lang.String)">valueOf</A></B>(java.lang.String name)</CODE>
<BR>
Returns the enum constant of this type with the specified name.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html#values()">values</A></B>()</CODE>
<BR>
Returns an array containing the constants of this enum type, in
the order they're declared.</TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Enum</B></TH>
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<TD><CODE>clone, compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf</CODE></TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
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<TD><CODE>finalize, getClass, notify, notifyAll, wait, wait, wait</CODE></TD>
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<A NAME="BspTreeIndex"><!-- --></A><H3>
BspTreeIndex</H3>
<PRE>
public static final <A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A> <B>BspTreeIndex</B></PRE>
<DL>
<DD><p>A Binary Space Partitioning tree is applied. All <a href="QGraphicsScene.html#QGraphicsScene(com.trolltech.qt.core.QRectF, com.trolltech.qt.core.QObject)"><tt>QGraphicsScene</tt></a>'s item location algorithms are of an order close to logarithmic complexity, by making use of binary search. Adding, moving and removing items is logarithmic. This approach is best for static scenes (i.e., scenes where most items do not move).</p>
<P>
<DL>
</DL>
</DL>
<HR>
<A NAME="NoIndex"><!-- --></A><H3>
NoIndex</H3>
<PRE>
public static final <A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A> <B>NoIndex</B></PRE>
<DL>
<DD><p>No index is applied. Item location is of linear complexity, as all items on the scene are searched. Adding, moving and removing items, however, is done in constant time. This approach is ideal for dynamic scenes, where many items are added, moved or removed continuously.</p>
<P>
<DL>
</DL>
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<A NAME="values()"><!-- --></A><H3>
values</H3>
<PRE>
public static final <A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A>[] <B>values</B>()</PRE>
<DL>
<DD>Returns an array containing the constants of this enum type, in
the order they're declared. This method may be used to iterate
over the constants as follows:
<pre>
for(QGraphicsScene.ItemIndexMethod c : QGraphicsScene.ItemIndexMethod.values())
System.out.println(c);
</pre>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an array containing the constants of this enum type, in
the order they're declared</DL>
</DD>
</DL>
<HR>
<A NAME="valueOf(java.lang.String)"><!-- --></A><H3>
valueOf</H3>
<PRE>
public static <A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A> <B>valueOf</B>(java.lang.String name)</PRE>
<DL>
<DD>Returns the enum constant of this type with the specified name.
The string must match <I>exactly</I> an identifier used to declare an
enum constant in this type. (Extraneous whitespace characters are
not permitted.)
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of the enum constant to be returned.
<DT><B>Returns:</B><DD>the enum constant with the specified name
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if this enum type has no constant
with the specified name</DL>
</DD>
</DL>
<HR>
<A NAME="value()"><!-- --></A><H3>
value</H3>
<PRE>
public int <B>value</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../com/trolltech/qt/QtEnumerator.html#value()">value</A></CODE> in interface <CODE><A HREF="../../../../com/trolltech/qt/QtEnumerator.html" title="interface in com.trolltech.qt">QtEnumerator</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="resolve(int)"><!-- --></A><H3>
resolve</H3>
<PRE>
public static <A HREF="../../../../com/trolltech/qt/gui/QGraphicsScene.ItemIndexMethod.html" title="enum in com.trolltech.qt.gui">QGraphicsScene.ItemIndexMethod</A> <B>resolve</B>(int value)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
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