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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Thu Apr 27 23:34:19 PDT 2000 --><TITLE>Java 2 Platform SE v1.3: Class RenderContext</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/RenderContext.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Std. Ed. v1.3</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../java/awt/image/renderable/RenderableImageProducer.html"><B>PREV CLASS</B></A> NEXT CLASS</FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="RenderContext.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">java.awt.image.renderable</FONT><BR>Class RenderContext</H2><PRE><A HREF="../../../../java/lang/Object.html">java.lang.Object</A> | +--<B>java.awt.image.renderable.RenderContext</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../java/lang/Cloneable.html">Cloneable</A></DD></DL><HR><DL><DT>public class <B>RenderContext</B><DT>extends <A HREF="../../../../java/lang/Object.html">Object</A><DT>implements <A HREF="../../../../java/lang/Cloneable.html">Cloneable</A></DL><P>A RenderContext encapsulates the information needed to produce a specific rendering from a RenderableImage. It contains the area to be rendered specified in rendering-independent terms, the resolution at which the rendering is to be performed, and hints used to control the rendering process. <p> Users create RenderContexts and pass them to the RenderableImage via the createRendering method. Most of the methods of RenderContexts are not meant to be used directly by applications, but by the RenderableImage and operator classes to which it is passed. <p> The AffineTransform parameter passed into and out of this class are cloned. The RenderingHints and Shape parameters are not necessarily cloneable and are therefore only reference copied. Altering RenderingHints or Shape instances that are in use by instances of RenderContext may have undesired side effects.<P><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#RenderContext(java.awt.geom.AffineTransform)">RenderContext</A></B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> usr2dev)</CODE><BR> Constructs a RenderContext with a given transform.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#RenderContext(java.awt.geom.AffineTransform, java.awt.RenderingHints)">RenderContext</A></B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> usr2dev, <A HREF="../../../../java/awt/RenderingHints.html">RenderingHints</A> hints)</CODE><BR> Constructs a RenderContext with a given transform and rendering hints.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#RenderContext(java.awt.geom.AffineTransform, java.awt.Shape)">RenderContext</A></B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> usr2dev, <A HREF="../../../../java/awt/Shape.html">Shape</A> aoi)</CODE><BR> Constructs a RenderContext with a given transform and area of interest.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#RenderContext(java.awt.geom.AffineTransform, java.awt.Shape, java.awt.RenderingHints)">RenderContext</A></B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> usr2dev, <A HREF="../../../../java/awt/Shape.html">Shape</A> aoi, <A HREF="../../../../java/awt/RenderingHints.html">RenderingHints</A> hints)</CODE><BR> Constructs a RenderContext with a given transform.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../java/lang/Object.html">Object</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#clone()">clone</A></B>()</CODE><BR> Makes a copy of a RenderContext.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#concatenateTransform(java.awt.geom.AffineTransform)">concatenateTransform</A></B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> modTransform)</CODE><BR> Modifies the current user-to-device transform by appending another transform.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#concetenateTransform(java.awt.geom.AffineTransform)">concetenateTransform</A></B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> modTransform)</CODE><BR> <B>Deprecated.</B> <I>replaced by <code>concatenateTransform(AffineTransform)</code>.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../java/awt/Shape.html">Shape</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#getAreaOfInterest()">getAreaOfInterest</A></B>()</CODE><BR> Gets the ares of interest currently contained in the RenderContext.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../java/awt/RenderingHints.html">RenderingHints</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#getRenderingHints()">getRenderingHints</A></B>()</CODE><BR> Gets the rendering hints of this <code>RenderContext</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#getTransform()">getTransform</A></B>()</CODE><BR> Gets the current user-to-device AffineTransform.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#preConcatenateTransform(java.awt.geom.AffineTransform)">preConcatenateTransform</A></B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> modTransform)</CODE><BR> Modifies the current user-to-device transform by prepending another transform.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#preConcetenateTransform(java.awt.geom.AffineTransform)">preConcetenateTransform</A></B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> modTransform)</CODE><BR> <B>Deprecated.</B> <I>replaced by <code>preConcatenateTransform(AffineTransform)</code>.</I></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#setAreaOfInterest(java.awt.Shape)">setAreaOfInterest</A></B>(<A HREF="../../../../java/awt/Shape.html">Shape</A> newAoi)</CODE><BR> Sets the current area of interest.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#setRenderingHints(java.awt.RenderingHints)">setRenderingHints</A></B>(<A HREF="../../../../java/awt/RenderingHints.html">RenderingHints</A> hints)</CODE><BR> Sets the rendering hints of this <code>RenderContext</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../java/awt/image/renderable/RenderContext.html#setTransform(java.awt.geom.AffineTransform)">setTransform</A></B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> newTransform)</CODE><BR> Sets the current user-to-device AffineTransform contained in the RenderContext to a given transform.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.<A HREF="../../../../java/lang/Object.html">Object</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../../../java/lang/Object.html#toString()">toString</A>, <A HREF="../../../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="RenderContext(java.awt.geom.AffineTransform, java.awt.Shape, java.awt.RenderingHints)"><!-- --></A><H3>RenderContext</H3><PRE>public <B>RenderContext</B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> usr2dev, <A HREF="../../../../java/awt/Shape.html">Shape</A> aoi, <A HREF="../../../../java/awt/RenderingHints.html">RenderingHints</A> hints)</PRE><DL><DD>Constructs a RenderContext with a given transform. The area of interest is supplied as a Shape, and the rendering hints are supplied as a RenderingHints object.<DD><DL><DT><B>Parameters:</B><DD><CODE>usr2dev</CODE> - an AffineTransform.<DD><CODE>aoi</CODE> - a Shape representing the area of interest.<DD><CODE>hints</CODE> - a RenderingHints object containing rendering hints.</DL></DD></DL><HR><A NAME="RenderContext(java.awt.geom.AffineTransform)"><!-- --></A><H3>RenderContext</H3><PRE>public <B>RenderContext</B>(<A HREF="../../../../java/awt/geom/AffineTransform.html">AffineTransform</A> usr2dev)</PRE>⌨️ 快捷键说明
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