displayobject.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

<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.TITLE_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="OBJECTIVE_CRS_PROPERTY"><!-- --></A><H3>
OBJECTIVE_CRS_PROPERTY</H3>
<PRE>
public static final <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>OBJECTIVE_CRS_PROPERTY</B></PRE>
<DL>
<DD>The name of the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeEvent.html" title="class or interface in java.beans">property change event</A> fired when the
 canvas <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getObjectiveCRS()">objective CRS</A> changed.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.OBJECTIVE_CRS_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="DISPLAY_CRS_PROPERTY"><!-- --></A><H3>
DISPLAY_CRS_PROPERTY</H3>
<PRE>
public static final <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>DISPLAY_CRS_PROPERTY</B></PRE>
<DL>
<DD>The name of the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeEvent.html" title="class or interface in java.beans">property change event</A> fired when the
 canvas <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getDisplayCRS()">display CRS</A> changed.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.DISPLAY_CRS_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="GRAPHICS_PROPERTY"><!-- --></A><H3>
GRAPHICS_PROPERTY</H3>
<PRE>
public static final <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>GRAPHICS_PROPERTY</B></PRE>
<DL>
<DD>The name of the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeEvent.html" title="class or interface in java.beans">property change event</A> fired when the
 <A HREF="../../../../org/geotools/display/canvas/AbstractCanvas.html#getGraphics()">set of graphics</A> in this canvas changed.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.GRAPHICS_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="VISIBLE_PROPERTY"><!-- --></A><H3>
VISIBLE_PROPERTY</H3>
<PRE>
public static final <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>VISIBLE_PROPERTY</B></PRE>
<DL>
<DD>The name of the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeEvent.html" title="class or interface in java.beans">property change event</A> fired when the
 <A HREF="../../../../org/geotools/display/canvas/AbstractGraphic.html#getVisible()">graphic visibility</A> changed.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.VISIBLE_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="Z_ORDER_HINT_PROPERTY"><!-- --></A><H3>
Z_ORDER_HINT_PROPERTY</H3>
<PRE>
public static final <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>Z_ORDER_HINT_PROPERTY</B></PRE>
<DL>
<DD>The name of the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeEvent.html" title="class or interface in java.beans">property change event</A> fired when the
 <A HREF="../../../../org/geotools/display/canvas/AbstractGraphic.html#getZOrderHint()">z order hint</A> changed.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.Z_ORDER_HINT_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="ENVELOPE_PROPERTY"><!-- --></A><H3>
ENVELOPE_PROPERTY</H3>
<PRE>
public static final <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>ENVELOPE_PROPERTY</B></PRE>
<DL>
<DD>The name of the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeEvent.html" title="class or interface in java.beans">property change event</A>
 fired when the <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getEnvelope()">canvas envelope</A> or
 <A HREF="../../../../org/geotools/display/canvas/ReferencedGraphic.html#getEnvelope()">graphic envelope</A> changed.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.ENVELOPE_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="SCALE_PROPERTY"><!-- --></A><H3>
SCALE_PROPERTY</H3>
<PRE>
public static final <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>SCALE_PROPERTY</B></PRE>
<DL>
<DD>The name of the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeEvent.html" title="class or interface in java.beans">property change event</A> fired when the
 canvas <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getScale()">canvas scale</A> changed.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.SCALE_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="DISPLAY_BOUNDS_PROPERTY"><!-- --></A><H3>
DISPLAY_BOUNDS_PROPERTY</H3>
<PRE>
public static final <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>DISPLAY_BOUNDS_PROPERTY</B></PRE>
<DL>
<DD>The name of the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeEvent.html" title="class or interface in java.beans">property change event</A> fired when the
 canvas <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#getDisplayBounds()">display bounds</A> changed.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.DISPLAY_BOUNDS_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="PARENT_PROPERTY"><!-- --></A><H3>
PARENT_PROPERTY</H3>
<PRE>
public static final <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>PARENT_PROPERTY</B></PRE>
<DL>
<DD>The name of the <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeEvent.html" title="class or interface in java.beans">property change event</A> fired when the
 <A HREF="../../../../org/geotools/display/canvas/AbstractGraphic.html#getParent()">graphic parent</A> changed.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.geotools.display.canvas.DisplayObject.PARENT_PROPERTY">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="listeners"><!-- --></A><H3>
listeners</H3>
<PRE>
protected final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/beans/PropertyChangeSupport.html" title="class or interface in java.beans">PropertyChangeSupport</A> <B>listeners</B></PRE>
<DL>
<DD>Listeners to be notified about any changes in this canvas properties.
<P>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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

<A NAME="DisplayObject()"><!-- --></A><H3>
DisplayObject</H3>
<PRE>
protected <B>DisplayObject</B>()</PRE>
<DL>
<DD>Creates a new instance of display object.
<P>
</DL>

<!-- ============ METHOD DETAIL ========== -->

<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="getRenderingHint(java.awt.RenderingHints.Key)"><!-- --></A><H3>
getRenderingHint</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getRenderingHint</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/RenderingHints.Key.html" title="class or interface in java.awt">RenderingHints.Key</A>&nbsp;key)</PRE>
<DL>
<DD>Returns a rendering hint. The default implementation always returns .
 The <A HREF="../../../../org/geotools/display/canvas/AbstractCanvas.html" title="class in org.geotools.display.canvas"><CODE>AbstractCanvas</CODE></A> and <CODE>org.geotools.display.style.GraphicStyle2D</CODE>
 subclasses override this method in order to performs real work.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - The hint key.
<DT><B>Returns:</B><DD>The hint value for the specified key, or  if none.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#getImplHint(java.lang.String)"><CODE>getImplHint(java.lang.String)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setRenderingHint(java.awt.RenderingHints.Key, java.lang.Object)"><!-- --></A><H3>
setRenderingHint</H3>
<PRE>
public void <B>setRenderingHint</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/RenderingHints.Key.html" title="class or interface in java.awt">RenderingHints.Key</A>&nbsp;key,
                             <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;value)</PRE>
<DL>
<DD>Adds a rendering hint. The default implementation ignore the hint value and does nothing.
 The <A HREF="../../../../org/geotools/display/canvas/AbstractCanvas.html" title="class in org.geotools.display.canvas"><CODE>AbstractCanvas</CODE></A> and <CODE>org.geotools.display.style.GraphicStyle2D</CODE>
 subclasses override this method in order to performs real work.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>key</CODE> - The hint key.<DD><CODE>value</CODE> - The hint value. A  value remove the hint.<DT><B>See Also:</B><DD><A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#setImplHint(java.lang.String, java.lang.Object)"><CODE>setImplHint(java.lang.String, java.lang.Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getImplHint(java.lang.String)"><!-- --></A><H3>
getImplHint</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getImplHint</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;name)
                   throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></PRE>
<DL>
<DD>Returns the rendering hint associated with the hint name. The default implementation looks
 for a rendering hint key of the given name in some known classes like <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/RenderingHints.html" title="class or interface in java.awt"><CODE>RenderingHints</CODE></A>
 and <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/JAI.html" title="class or interface in javax.media.jai"><CODE>JAI</CODE></A>, and invokes <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#getRenderingHint(java.awt.RenderingHints.Key)"><CODE>getRenderingHint(java.awt.RenderingHints.Key)</CODE></A> with that key.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of the hint.
<DT><B>Returns:</B><DD>The hint value for the specified key, or  if none.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="setImplHint(java.lang.String, java.lang.Object)"><!-- --></A><H3>
setImplHint</H3>
<PRE>
public void <B>setImplHint</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;name,
                        <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;value)</PRE>
<DL>
<DD>Sets a rendering hint for implementation or platform specific rendering information.
 The default implementation looks for a rendering hint key of the given name in some
 known classes like <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/RenderingHints.html" title="class or interface in java.awt"><CODE>RenderingHints</CODE></A> and <A HREF="http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/JAI.html" title="class or interface in javax.media.jai"><CODE>JAI</CODE></A>, and invokes
 <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#setRenderingHint(java.awt.RenderingHints.Key, java.lang.Object)"><CODE>setRenderingHint(java.awt.RenderingHints.Key, java.lang.Object)</CODE></A> with that key. For example the two following method calls are