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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 Mon Jul 15 11:49:49 PDT 2002 --><TITLE>: Class QTImageProducer</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/QTImageProducer.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-all.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></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../quicktime/app/image/QTImageDrawer.html"><B>PREV CLASS</B></A> <A HREF="../../../quicktime/app/image/QTTransition.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="QTImageProducer.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">quicktime.app.image</FONT><BR>Class QTImageProducer</H2><PRE>java.lang.Object | +--<B>quicktime.app.image.QTImageProducer</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.awt.image.ImageProducer, <A HREF="../../../quicktime/app/image/Redrawable.html">Redrawable</A></DD></DL><HR><DL><DT>public class <B>QTImageProducer</B><DT>extends java.lang.Object<DT>implements java.awt.image.ImageProducer, <A HREF="../../../quicktime/app/image/Redrawable.html">Redrawable</A></DL><P>The QTImageProducer implements the java.awt.image.ImageProducer interface for a single source QuickTime object. The QuickTime source can be a single frame (ie. still image) or a mutliple frame source such as a movie, sprite world animation, effect, etc. The QTImageProducer can produce images for multiple ImageConsumers. <P> The isRedrawing() method returns true if the source QT object is an object that requires redrawing. In this case the ImageObserver of this Producer should explicitly call the redraw() method and repaint the resultant Image to see any changes in the source of the pixel data. For instance a typical movie will be a sequence of images over time, and for consequent frames to be seen the producer must be redraw. The act of redrawing the producer will also result in the registered consumers being notified and given the changed pixels. Redrawing can also be optimised to only redraw those pixels within a specified region. <P> When the source is originally added to the Producer it is drawn. If the source is not or does not require redrawing then consequent calls to redraw will have no effect as the source pixels have not changed. If the redrawing characteristics of the QTDrawable source change then you must call setRedrawing(true) to tell the producer that it should redraw the source's pixel data before the redraw method is called. By default an QTImageProduce is seen as potentially presenting dynamic or changing image data.<P><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="fields_inherited_from_class_quicktime.app.image.Redrawable"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Fields inherited from interface quicktime.app.image.<A HREF="../../../quicktime/app/image/Redrawable.html">Redrawable</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../quicktime/app/image/Redrawable.html#kMultiFrame">kMultiFrame</A>, <A HREF="../../../quicktime/app/image/Redrawable.html#kSingleFrame">kSingleFrame</A></CODE></TD></TR></TABLE> <!-- ======== 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="../../../quicktime/app/image/QTImageProducer.html#QTImageProducer(quicktime.app.display.QTDrawable, java.awt.Dimension)">QTImageProducer</A></B>(<A HREF="../../../quicktime/app/display/QTDrawable.html">QTDrawable</A> qtSource, java.awt.Dimension initSize)</CODE><BR> Creates an ImageProducer from the specified qtSource.</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> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/app/image/QTImageProducer.html#addConsumer(java.awt.image.ImageConsumer)">addConsumer</A></B>(java.awt.image.ImageConsumer ic)</CODE><BR> This method is used to register an ImageConsumer with the ImageProducer for access to the image data during a later reconstruction of the Image.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../quicktime/qd/QDGraphics.html">QDGraphics</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/app/image/QTImageProducer.html#getGWorld()">getGWorld</A></B>()</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.awt.Dimension</CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/app/image/QTImageProducer.html#getSize()">getSize</A></B>()</CODE><BR> This returns the rendered size of the qtSource pixel data as specified in the constructor.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/app/image/QTImageProducer.html#isConsumer(java.awt.image.ImageConsumer)">isConsumer</A></B>(java.awt.image.ImageConsumer ic)</CODE><BR> This method determines if a given ImageConsumer object is currently registered with this ImageProducer as one of its consumers.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/app/image/QTImageProducer.html#isRedrawing()">isRedrawing</A></B>()</CODE><BR> Returns true if the image data may be altered or different upon different calls of the redraw method of the QTDrawable interface</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/app/image/QTImageProducer.html#isSingleFrame()">isSingleFrame</A></B>()</CODE><BR> Returns true if the Redrawable only has a single frame to render and thus will never need to re-acquire or redraw its image.</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="../../../quicktime/app/image/QTImageProducer.html#redraw(quicktime.qd.Region)">redraw</A></B>(<A HREF="../../../quicktime/qd/Region.html">Region</A> invalidRgn)</CODE><BR> This method is called to redraw the QuickTime image source and update any of the current ImageConsumers with the new pixels that have been generated.</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="../../../quicktime/app/image/QTImageProducer.html#removeConsumer(java.awt.image.ImageConsumer)">removeConsumer</A></B>(java.awt.image.ImageConsumer ic)</CODE><BR> This method removes the given ImageConsumer object from the list of consumers currently registered to receive image data.</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="../../../quicktime/app/image/QTImageProducer.html#requestTopDownLeftRightResend(java.awt.image.ImageConsumer)">requestTopDownLeftRightResend</A></B>(java.awt.image.ImageConsumer ic)</CODE><BR> This method is used by an ImageConsumer to request that the ImageProducer attempt to resend the image data one more time in TOPDOWNLEFTRIGHT order so that higher quality conversion algorithms which depend on receiving pixels in order can be used to produce a better output version of the image.</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="../../../quicktime/app/image/QTImageProducer.html#setRedrawing(boolean)">setRedrawing</A></B>(boolean redrawFlag)</CODE><BR> If true then the redraw method of the object will fetch new image data from its image source.</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="../../../quicktime/app/image/QTImageProducer.html#startProduction(java.awt.image.ImageConsumer)">startProduction</A></B>(java.awt.image.ImageConsumer ic)</CODE><BR> This method both registers the given ImageConsumer object as a consumer and starts an immediate reconstruction of the image data which will then be delivered to this consumer and any other consumer which may have already been registered with the producer.</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="../../../quicktime/app/image/QTImageProducer.html#updateConsumers(quicktime.qd.Region)">updateConsumers</A></B>(<A HREF="../../../quicktime/qd/Region.html">Region</A> invalidRgn)</CODE><BR> This method can be called by an application to have the QTImageProducer to update the pixel data for each of the registered ImageConsumers when the source QTDrawable object has drawn.</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.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</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>⌨️ 快捷键说明
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