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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 11:49:50 PDT 2002 --><TITLE>: Interface Timeable</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/Timeable.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/time/Ticklish.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="Timeable.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">quicktime.app.time</FONT><BR>Interface Timeable</H2><DL><DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../quicktime/app/players/Playable.html">Playable</A>, <A HREF="../../../quicktime/app/spaces/TimeableController.html">TimeableController</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../quicktime/app/time/Timer.html">Timer</A></DD></DL><HR><DL><DT>public interface <B>Timeable</B></DL><P>This interface defines a protocol for dealing with time lines. The Timer, QTPlayer and MoviePlayer objects all have a TimeBase as the foundation upon which their sense of time is founded. This interface provids a way to get this TimeBase and to set and get its current rate. <P> There is a close relationship between Timeable objects and Taskable objects, A Timeable object's TimeBase will tick of its own accord - time marches on regardless. However Timeable objects generally have tasks that need to be performed at certain times. For instance, a movie needs to draw its next frame at time x, etc. Whilst some of the tasks that these objects perform are done at interrupt time, they also need to be given task time, time from the application when the tasks and schedules that they maintain can be performed outside of the constraints or system load of interrupt (or highest priority thread) time. <P> Thus these objects have a requirement to have some kind of task method called, in the case of a Movie it is MoviesTask, of a MovieController - MCIdle, a SpriteWorld - SpriteWorldIdle. <P> The tasking requirements of these classes maybe performed directly by the class itself (in the case of QTPlayer for example) or it maybe delegated to another class (as in the case of MoviePlayer). <P><P><DL><DT><B>See Also: </B><DD><A HREF="../../../quicktime/app/time/Taskable.html"><CODE>Taskable</CODE></A>, <A HREF="../../../quicktime/app/time/Timer.html"><CODE>Timer</CODE></A>, <A HREF="../../../quicktime/app/players/QTPlayer.html"><CODE>QTPlayer</CODE></A>, <A HREF="../../../quicktime/app/players/MoviePlayer.html"><CODE>MoviePlayer</CODE></A>, <A HREF="../../../quicktime/std/clocks/TimeBase.html"><CODE>TimeBase</CODE></A></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== 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> float</CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/app/time/Timeable.html#getRate()">getRate</A></B>()</CODE><BR> Returns the current rate of the Timeable object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../quicktime/std/clocks/TimeBase.html">TimeBase</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../quicktime/app/time/Timeable.html#getTimeBase()">getTimeBase</A></B>()</CODE><BR> Returns the current time base that provides the time foundation of this object.</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/time/Timeable.html#setRate(float)">setRate</A></B>(float rate)</CODE><BR> Sets the Timeable's playback rate.</TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="getTimeBase()"><!-- --></A><H3>getTimeBase</H3><PRE>public <A HREF="../../../quicktime/std/clocks/TimeBase.html">TimeBase</A> <B>getTimeBase</B>() throws <A HREF="../../../quicktime/QTException.html">QTException</A></PRE><DL><DD>Returns the current time base that provides the time foundation of this object.<DD><DL><DT><B>Returns:</B><DD>a TimeBase</DL></DD></DL><HR><A NAME="setRate(float)"><!-- --></A><H3>setRate</H3><PRE>public void <B>setRate</B>(float rate) throws <A HREF="../../../quicktime/QTException.html">QTException</A></PRE><DL><DD>Sets the Timeable's playback rate. Typically a rate of zero will mean that the player is stopped, a positive value that the player is playing forwards, a negative value that the time values are decreasing.<DD><DL><DT><B>Parameters:</B><DD><CODE>rate</CODE> - the new playback rate.</DL></DD></DL><HR><A NAME="getRate()"><!-- --></A><H3>getRate</H3><PRE>public float <B>getRate</B>() throws <A HREF="../../../quicktime/QTException.html">QTException</A></PRE><DL><DD>Returns the current rate of the Timeable object.<DD><DL><DT><B>Returns:</B><DD>the playback rate</DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_bottom"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_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/Timeable.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/time/Ticklish.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="Timeable.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR></BODY></HTML>⌨️ 快捷键说明
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