mediatracker.html

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public <B>MediaTracker</B>(<A HREF="../../java/awt/Component.html">Component</A>&nbsp;comp)</PRE>
<DL>
<DD>Creates a media tracker to track images for a given component.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>comp</CODE> - the component on which the images 
                     will eventually be drawn.</DL>
</DD>
</DL>

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<B>Method Detail</B></FONT></TD>
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<A NAME="addImage(java.awt.Image, int)"><!-- --></A><H3>
addImage</H3>
<PRE>
public void <B>addImage</B>(<A HREF="../../java/awt/Image.html">Image</A>&nbsp;image,
                     int&nbsp;id)</PRE>
<DL>
<DD>Adds an image to the list of images being tracked by this media 
 tracker. The image will eventually be rendered at its default 
 (unscaled) size.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>image</CODE> - the image to be tracked.<DD><CODE>id</CODE> - an identifier used to track this image.</DL>
</DD>
</DL>
<HR>

<A NAME="addImage(java.awt.Image, int, int, int)"><!-- --></A><H3>
addImage</H3>
<PRE>
public void <B>addImage</B>(<A HREF="../../java/awt/Image.html">Image</A>&nbsp;image,
                     int&nbsp;id,
                     int&nbsp;w,
                     int&nbsp;h)</PRE>
<DL>
<DD>Adds a scaled image to the list of images being tracked  
 by this media tracker. The image will eventually be 
 rendered at the indicated width and height.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>image</CODE> - the image to be tracked.<DD><CODE>id</CODE> - an identifier that can be used to track this image.<DD><CODE>w</CODE> - the width at which the image is rendered.<DD><CODE>h</CODE> - the height at which the image is rendered.</DL>
</DD>
</DL>
<HR>

<A NAME="checkAll()"><!-- --></A><H3>
checkAll</H3>
<PRE>
public boolean <B>checkAll</B>()</PRE>
<DL>
<DD>Checks to see if all images being tracked by this media tracker 
 have finished loading. 
 <p>
 This method does not start loading the images if they are not 
 already loading. 
 <p>
 If there is an error while loading or scaling an image, then that 
 image is considered to have finished loading. Use the 
 <code>isErrorAny</code> or <code>isErrorID</code> methods to 
 check for errors.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD><code>true</code> if all images have finished loading, 
                       have been aborted, or have encountered 
                       an error; <code>false</code> otherwise.<DT><B>See Also: </B><DD><A HREF="../../java/awt/MediaTracker.html#checkAll(boolean)"><CODE>checkAll(boolean)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#checkID(int)"><CODE>checkID(int)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorAny()"><CODE>isErrorAny()</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorID(int)"><CODE>isErrorID(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="checkAll(boolean)"><!-- --></A><H3>
checkAll</H3>
<PRE>
public boolean <B>checkAll</B>(boolean&nbsp;load)</PRE>
<DL>
<DD>Checks to see if all images being tracked by this media tracker 
 have finished loading. 
 <p>
 If the value of the <code>load</code> flag is <code>true</code>, 
 then this method starts loading any images that are not yet 
 being loaded. 
 <p>
 If there is an error while loading or scaling an image, that 
 image is considered to have finished loading. Use the 
 <code>isErrorAny</code> and <code>isErrorID</code> methods to 
 check for errors.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>load</CODE> - if <code>true</code>, start loading any 
                       images that are not yet being loaded.<DT><B>Returns:</B><DD><code>true</code> if all images have finished loading, 
                       have been aborted, or have encountered 
                       an error; <code>false</code> otherwise.<DT><B>See Also: </B><DD><A HREF="../../java/awt/MediaTracker.html#checkID(int)"><CODE>checkID(int)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#checkAll()"><CODE>checkAll()</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorAny()"><CODE>isErrorAny()</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorID(int)"><CODE>isErrorID(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="isErrorAny()"><!-- --></A><H3>
isErrorAny</H3>
<PRE>
public boolean <B>isErrorAny</B>()</PRE>
<DL>
<DD>Checks the error status of all of the images.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD><code>true</code> if any of the images tracked
                  by this media tracker had an error during 
                  loading; <code>false</code> otherwise.<DT><B>See Also: </B><DD><A HREF="../../java/awt/MediaTracker.html#isErrorID(int)"><CODE>isErrorID(int)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#getErrorsAny()"><CODE>getErrorsAny()</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getErrorsAny()"><!-- --></A><H3>
getErrorsAny</H3>
<PRE>
public <A HREF="../../java/lang/Object.html">Object</A>[] <B>getErrorsAny</B>()</PRE>
<DL>
<DD>Returns a list of all media that have encountered an error.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an array of media objects tracked by this 
                        media tracker that have encountered 
                        an error, or <code>null</code> if 
                        there are none with errors.<DT><B>See Also: </B><DD><A HREF="../../java/awt/MediaTracker.html#isErrorAny()"><CODE>isErrorAny()</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#getErrorsID(int)"><CODE>getErrorsID(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="waitForAll()"><!-- --></A><H3>
waitForAll</H3>
<PRE>
public void <B>waitForAll</B>()
                throws <A HREF="../../java/lang/InterruptedException.html">InterruptedException</A></PRE>
<DL>
<DD>Starts loading all images tracked by this media tracker. This 
 method waits until all the images being tracked have finished 
 loading. 
 <p>
 If there is an error while loading or scaling an image, then that 
 image is considered to have finished loading. Use the 
 <code>isErrorAny</code> or <code>isErrorID</code> methods to 
 check for errors.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="../../java/lang/InterruptedException.html">InterruptedException</A></CODE> - if another thread has 
                                     interrupted this thread.<DT><B>See Also: </B><DD><A HREF="../../java/awt/MediaTracker.html#waitForID(int)"><CODE>waitForID(int)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#waitForAll(long)"><CODE>waitForAll(long)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorAny()"><CODE>isErrorAny()</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorID(int)"><CODE>isErrorID(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="waitForAll(long)"><!-- --></A><H3>
waitForAll</H3>
<PRE>
public boolean <B>waitForAll</B>(long&nbsp;ms)
                   throws <A HREF="../../java/lang/InterruptedException.html">InterruptedException</A></PRE>
<DL>
<DD>Starts loading all images tracked by this media tracker. This 
 method waits until all the images being tracked have finished 
 loading, or until the length of time specified in milliseconds  
 by the <code>ms</code> argument has passed. 
 <p>
 If there is an error while loading or scaling an image, then  
 that image is considered to have finished loading. Use the 
 <code>isErrorAny</code> or <code>isErrorID</code> methods to 
 check for errors.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ms</CODE> - the number of milliseconds to wait 
                       for the loading to complete.<DT><B>Returns:</B><DD><code>true</code> if all images were successfully 
                       loaded; <code>false</code> otherwise.<DT><B>Throws:</B><DD><CODE><A HREF="../../java/lang/InterruptedException.html">InterruptedException</A></CODE> - if another thread has 
                                     interrupted this thread.<DT><B>See Also: </B><DD><A HREF="../../java/awt/MediaTracker.html#waitForID(int)"><CODE>waitForID(int)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#waitForAll(long)"><CODE>waitForAll(long)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorAny()"><CODE>isErrorAny()</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorID(int)"><CODE>isErrorID(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="statusAll(boolean)"><!-- --></A><H3>
statusAll</H3>
<PRE>
public int <B>statusAll</B>(boolean&nbsp;load)</PRE>
<DL>
<DD>Calculates and returns the bitwise inclusive <b>OR</b> of the 
 status of all media that are tracked by this media tracker. 
 <p>
 Possible flags defined by the 
 <code>MediaTracker</code> class are <code>LOADING</code>, 
 <code>ABORTED</code>, <code>ERRORED</code>, and 
 <code>COMPLETE</code>. An image that hasn't started 
 loading has zero as its status. 
 <p>
 If the value of <code>load</code> is <code>true</code>, then
 this method starts loading any images that are not yet being loaded.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>load</CODE> - if <code>true</code>, start loading 
                            any images that are not yet being loaded.<DT><B>Returns:</B><DD>the bitwise inclusive <b>OR</b> of the status of 
                            all of the media being tracked.<DT><B>See Also: </B><DD><A HREF="../../java/awt/MediaTracker.html#statusID(int, boolean)"><CODE>statusID(int, boolean)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#LOADING"><CODE>LOADING</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#ABORTED"><CODE>ABORTED</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#ERRORED"><CODE>ERRORED</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#COMPLETE"><CODE>COMPLETE</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="checkID(int)"><!-- --></A><H3>
checkID</H3>
<PRE>
public boolean <B>checkID</B>(int&nbsp;id)</PRE>
<DL>
<DD>Checks to see if all images tracked by this media tracker that 
 are tagged with the specified identifier have finished loading. 
 <p>
 This method does not start loading the images if they are not 
 already loading. 
 <p>
 If there is an error while loading or scaling an image, then that 
 image is considered to have finished loading. Use the 
 <code>isErrorAny</code> or <code>isErrorID</code> methods to 
 check for errors.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>id</CODE> - the identifier of the images to check.<DT><B>Returns:</B><DD><code>true</code> if all images have finished loading, 
                       have been aborted, or have encountered 
                       an error; <code>false</code> otherwise.<DT><B>See Also: </B><DD><A HREF="../../java/awt/MediaTracker.html#checkID(int, boolean)"><CODE>checkID(int, boolean)</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#checkAll()"><CODE>checkAll()</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorAny()"><CODE>isErrorAny()</CODE></A>, 
<A HREF="../../java/awt/MediaTracker.html#isErrorID(int)"><CODE>isErrorID(int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="checkID(int, boolean)"><!-- --></A><H3>
checkID</H3>
<PRE>