maplayer.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="getFeatureSource()"><!-- --></A><H3>
getFeatureSource</H3>
<PRE>
public <A HREF="../../../org/geotools/data/FeatureSource.html" title="interface in org.geotools.data">FeatureSource</A> <B>getFeatureSource</B>()</PRE>
<DL>
<DD>Get the feature collection for this layer.  If features has not been set
 yet, then null is returned.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the features for this layer.</DL>
</DD>
</DL>
<HR>

<A NAME="getStyle()"><!-- --></A><H3>
getStyle</H3>
<PRE>
public <A HREF="../../../org/geotools/styling/Style.html" title="interface in org.geotools.styling">Style</A> <B>getStyle</B>()</PRE>
<DL>
<DD>Get the style for this layer.  If style has not been set, then null is
 returned.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>The style (SLD).</DL>
</DD>
</DL>
<HR>

<A NAME="setStyle(org.geotools.styling.Style)"><!-- --></A><H3>
setStyle</H3>
<PRE>
public void <B>setStyle</B>(<A HREF="../../../org/geotools/styling/Style.html" title="interface in org.geotools.styling">Style</A>&nbsp;style)</PRE>
<DL>
<DD>Sets the style for this layer. If a style has not been defined a default
 one is used.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>style</CODE> - The new style</DL>
</DD>
</DL>
<HR>

<A NAME="getTitle()"><!-- --></A><H3>
getTitle</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>getTitle</B>()</PRE>
<DL>
<DD>Get the title of this layer. If title has not been defined then an empty
 string is returned.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>The title of this layer.</DL>
</DD>
</DL>
<HR>

<A NAME="setTitle(java.lang.String)"><!-- --></A><H3>
setTitle</H3>
<PRE>
public void <B>setTitle</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;title)</PRE>
<DL>
<DD>Set the title of this layer. A <CODE>LayerEvent</CODE> is fired if the new
 title is different from the previous one.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>title</CODE> - The title of this layer.</DL>
</DD>
</DL>
<HR>

<A NAME="isVisible()"><!-- --></A><H3>
isVisible</H3>
<PRE>
public boolean <B>isVisible</B>()</PRE>
<DL>
<DD>Determine whether this layer is visible on a map pane or whether the
 layer is hidden.
<P>
<DD><DL>

<DT><B>Returns:</B><DD><code>true</code> if the layer is visible, or <code>false</code>
         if the layer is hidden.</DL>
</DD>
</DL>
<HR>

<A NAME="setVisible(boolean)"><!-- --></A><H3>
setVisible</H3>
<PRE>
public void <B>setVisible</B>(boolean&nbsp;visible)</PRE>
<DL>
<DD>Specify whether this layer is visible on a map pane or whether the layer
 is hidden. A <CODE>LayerEvent</CODE> is fired if the visibility changed.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>visible</CODE> - Show the layer if <code>true</code>, or hide the layer if
        <code>false</code></DL>
</DD>
</DL>
<HR>

<A NAME="getQuery()"><!-- --></A><H3>
getQuery</H3>
<PRE>
public <A HREF="../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A> <B>getQuery</B>()</PRE>
<DL>
<DD>Returns the definition query (filter) for this layer. If no definition
 query has  been defined <CODE>Query.ALL</CODE> is returned.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setQuery(org.geotools.data.Query)"><!-- --></A><H3>
setQuery</H3>
<PRE>
public void <B>setQuery</B>(<A HREF="../../../org/geotools/data/Query.html" title="interface in org.geotools.data">Query</A>&nbsp;query)</PRE>
<DL>
<DD>Sets a definition query for the layer wich acts as a filter for the
 features that the layer will draw.
 
 <p>
 A consumer must ensure that this query is used in  combination with the
 bounding box filter generated on each map interaction to limit the
 number of features returned to those that complains both the definition
 query  and relies inside the area of interest.
 </p>
 <p>
 IMPORTANT: only include attribute names in the query if you want them to
 be ALWAYS returned. It is desirable to not include attributes at all
 but let the layer user (a renderer?) to decide wich attributes are actually
 needed to perform its requiered operation.
 </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - </DL>
</DD>
</DL>
<HR>

<A NAME="addMapLayerListener(org.geotools.map.event.MapLayerListener)"><!-- --></A><H3>
addMapLayerListener</H3>
<PRE>
public void <B>addMapLayerListener</B>(<A HREF="../../../org/geotools/map/event/MapLayerListener.html" title="interface in org.geotools.map.event">MapLayerListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Add a listener to notify when a layer property changes. Changes include
 layer visibility and the title text.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>listener</CODE> - The listener to add to the listener list.</DL>
</DD>
</DL>
<HR>

<A NAME="removeMapLayerListener(org.geotools.map.event.MapLayerListener)"><!-- --></A><H3>
removeMapLayerListener</H3>
<PRE>
public void <B>removeMapLayerListener</B>(<A HREF="../../../org/geotools/map/event/MapLayerListener.html" title="interface in org.geotools.map.event">MapLayerListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Removes a listener from the listener list for this layer.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>listener</CODE> - The listener to remove from the listener list.</DL>
</DD>
</DL>
<!-- ========= END OF CLASS DATA ========= -->
<HR>


<!-- ======= START OF BOTTOM NAVBAR ====== -->
<A NAME="navbar_bottom"><!-- --></A>
<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A>
<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY="">
<TR>
<TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
<A NAME="navbar_bottom_firstrow"><!-- --></A>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">
  <TR ALIGN="center" VALIGN="top">
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> &nbsp;<FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="class-use/MapLayer.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A>&nbsp;</TD>
  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A>&nbsp;</TD>
  </TR>
</TABLE>
</TD>
<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</EM>
</TD>
</TR>

<TR>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
&nbsp;<A HREF="../../../org/geotools/map/MapContext.html" title="interface in org.geotools.map"><B>PREV CLASS</B></A>&nbsp;
&nbsp;NEXT CLASS</FONT></TD>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
  <A HREF="../../../index.html" target="_top"><B>FRAMES</B></A>  &nbsp;
&nbsp;<A HREF="MapLayer.html" target="_top"><B>NO FRAMES</B></A>  &nbsp;
&nbsp;<SCRIPT type="text/javascript">
  <!--
  if(window==top) {
    document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>');
  }
  //-->
</SCRIPT>
<NOSCRIPT>
  <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>
</NOSCRIPT>

</FONT></TD>
</TR>
<TR>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
  SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;CONSTR&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
DETAIL:&nbsp;FIELD&nbsp;|&nbsp;CONSTR&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
</TR>
</TABLE>
<A NAME="skip-navbar_bottom"></A>
<!-- ======== END OF BOTTOM NAVBAR ======= -->

<HR>
Copyright &copy; 1996-2007 <a href="http://www.geotools.org">Geotools</a>. All Rights Reserved.
</BODY>
</HTML>