referencedcanvas2d.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

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<CODE>protected &nbsp;<A HREF="../../../../org/geotools/referencing/operation/matrix/AffineTransform2D.html" title="class in org.geotools.referencing.operation.matrix">AffineTransform2D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#objectiveToDisplay">objectiveToDisplay</A></B></CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The affine transform from the <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getObjectiveCRS()">objective CRS</A> to the
 <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getDisplayCRS()">display CRS</A>. </TD>
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&nbsp;<A NAME="fields_inherited_from_class_AbstractCanvas"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TD><B>Fields inherited from class <A HREF="../../../../org/geotools/display/canvas/AbstractCanvas.html" title="class in org.geotools.display.canvas">AbstractCanvas</A></B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../org/geotools/display/canvas/AbstractCanvas.html#FINEST_RESOLUTION">FINEST_RESOLUTION</A>, <A HREF="../../../../org/geotools/display/canvas/AbstractCanvas.html#hints">hints</A>, <A HREF="../../../../org/geotools/display/canvas/AbstractCanvas.html#PREFETCH">PREFETCH</A>, <A HREF="../../../../org/geotools/display/canvas/AbstractCanvas.html#REQUIRED_RESOLUTION">REQUIRED_RESOLUTION</A></CODE></TD>
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&nbsp;<A NAME="fields_inherited_from_class_DisplayObject"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TD><B>Fields inherited from class <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html" title="class in org.geotools.display.canvas">DisplayObject</A></B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#DISPLAY_BOUNDS_PROPERTY">DISPLAY_BOUNDS_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#DISPLAY_CRS_PROPERTY">DISPLAY_CRS_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#ENVELOPE_PROPERTY">ENVELOPE_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#GRAPHICS_PROPERTY">GRAPHICS_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#listeners">listeners</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#NAME_PROPERTY">NAME_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#OBJECTIVE_CRS_PROPERTY">OBJECTIVE_CRS_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#PARENT_PROPERTY">PARENT_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#SCALE_PROPERTY">SCALE_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#TITLE_PROPERTY">TITLE_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#VISIBLE_PROPERTY">VISIBLE_PROPERTY</A>, <A HREF="../../../../org/geotools/display/canvas/DisplayObject.html#Z_ORDER_HINT_PROPERTY">Z_ORDER_HINT_PROPERTY</A></CODE></TD>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->

<A NAME="constructor_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=2><FONT SIZE="+2">
<B>Constructor Summary</B></FONT></TD>
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<CODE>protected </CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#ReferencedCanvas2D(org.opengis.go.display.DisplayFactory)">ReferencedCanvas2D</A></B>(DisplayFactory&nbsp;factory)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Creates an initially empty canvas with a default CRS.</TD>
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</TABLE>
&nbsp;
<!-- ========== METHOD SUMMARY =========== -->

<A NAME="method_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=2><FONT SIZE="+2">
<B>Method Summary</B></FONT></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#format(org.geotools.display.event.ReferencedEvent, java.lang.StringBuffer)">format</A></B>(<A HREF="../../../../org/geotools/display/event/ReferencedEvent.html" title="interface in org.geotools.display.event">ReferencedEvent</A>&nbsp;event,
       <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/StringBuffer.html" title="class or interface in java.lang">StringBuffer</A>&nbsp;toAppendTo)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Formats a value for a given event. The meaning of "value" depends on the underlying
 graphics. For example in the particular case of a Digital Elevation Model (DEM), it
 could be the altitude at the event location. This value is typically to be appended
 to some other informations, like the event geographic coordinates.
 <p>
 This method queries registered <A HREF="../../../../org/geotools/display/canvas/ReferencedGraphic.html" title="class in org.geotools.display.canvas">graphics</A> in decreasing
 <A HREF="../../../../org/geotools/display/canvas/AbstractGraphic.html#getZOrderHint()">z-order</A> until one is found to formats a
 value.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/javax/swing/Action.html" title="class or interface in javax.swing">Action</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#getAction(org.geotools.display.event.ReferencedEvent)">getAction</A></B>(<A HREF="../../../../org/geotools/display/event/ReferencedEvent.html" title="interface in org.geotools.display.event">ReferencedEvent</A>&nbsp;event)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the action to be used for a given event.
 This method queries registered <A HREF="../../../../org/geotools/display/canvas/ReferencedGraphic.html" title="class in org.geotools.display.canvas">graphics</A> in decreasing
 <A HREF="../../../../org/geotools/display/canvas/AbstractGraphic.html#getZOrderHint()">z-order</A> until one is found to returns a
 non-null action.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html" title="class or interface in java.awt">Shape</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#getDisplayBounds()">getDisplayBounds</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the display bounds in terms of <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getDisplayCRS()">display CRS</A>.
 </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/Rectangle2D.html" title="class or interface in java.awt.geom">Rectangle2D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#getEnvelope2D()">getEnvelope2D</A></B>()</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a rectangle that completly encloses all <A HREF="../../../../org/geotools/display/canvas/ReferencedGraphic.html#getEnvelope()">graphic envelopes</A> managed by this canvas. </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#getToolTipText(org.geotools.display.event.ReferencedEvent)">getToolTipText</A></B>(<A HREF="../../../../org/geotools/display/event/ReferencedEvent.html" title="interface in org.geotools.display.event">ReferencedEvent</A>&nbsp;event)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the string to be used as the tooltip for a given event.
 This method queries registered <A HREF="../../../../org/geotools/display/canvas/ReferencedGraphic.html" title="class in org.geotools.display.canvas">graphics</A> in decreasing
 <A HREF="../../../../org/geotools/display/canvas/AbstractGraphic.html#getZOrderHint()">z-order</A> until one is found to returns a
 non-null string.</TD>
</TR>
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<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#isVisible(org.opengis.spatialschema.geometry.DirectPosition)">isVisible</A></B>(DirectPosition&nbsp;coordinate)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns  if the given coordinate is visible on this . </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Rectangle.html" title="class or interface in java.awt">Rectangle</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#objectiveToDisplay(java.awt.geom.Rectangle2D)">objectiveToDisplay</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/Rectangle2D.html" title="class or interface in java.awt.geom">Rectangle2D</A>&nbsp;bounds)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Transforms the specified rectangle from the <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getObjectiveCRS()">objective CRS</A> to
 the <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getDisplayCRS()">display CRS</A> used by <cite>Java2D</cite>. </TD>
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<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#paintFinished(boolean)">paintFinished</A></B>(boolean&nbsp;success)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Invoked when this canvas painting finished, either successfully or after a failure.
 </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#paintStarted(java.awt.Shape)">paintStarted</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html" title="class or interface in java.awt">Shape</A>&nbsp;dirtyArea)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Invoked when this canvas is about to be painted. </TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#repaint(org.opengis.go.display.primitive.Graphic, java.awt.geom.Rectangle2D, java.awt.Rectangle)">repaint</A></B>(Graphic&nbsp;graphic,
        <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/geom/Rectangle2D.html" title="class or interface in java.awt.geom">Rectangle2D</A>&nbsp;objectiveArea,
        <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Rectangle.html" title="class or interface in java.awt">Rectangle</A>&nbsp;displayArea)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Advises that at least a portion of this canvas need to be repainted. </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#setDisplayBounds(java.awt.Shape)">setDisplayBounds</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/awt/Shape.html" title="class or interface in java.awt">Shape</A>&nbsp;bounds)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the display bounds in terms of <A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas.html#getDisplayCRS()">display CRS</A>.
 </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/geotools/display/canvas/ReferencedCanvas2D.html#setObjectiveCRS(org.opengis.referencing.crs.CoordinateReferenceSystem)">setObjectiveCRS</A></B>(CoordinateReferenceSystem&nbsp;crs)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the objective Coordinate Reference System for this .
 </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">