asyncboxview.childlocator.html

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 used to store the current allocation.</TD>
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<A NAME="lastValidOffset"><!-- --></A><H3>
lastValidOffset</H3>
<PRE>
protected <A HREF="../../../javax/swing/text/AsyncBoxView.ChildState.html">AsyncBoxView.ChildState</A> <B>lastValidOffset</B></PRE>
<DL>
<DD>The location of the last offset calculation
 that is valid.</DL>
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<A NAME="lastAlloc"><!-- --></A><H3>
lastAlloc</H3>
<PRE>
protected <A HREF="../../../java/awt/Rectangle.html">Rectangle</A> <B>lastAlloc</B></PRE>
<DL>
<DD>The last seen allocation (for repainting when changes
 are flushed upward).</DL>
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<A NAME="childAlloc"><!-- --></A><H3>
childAlloc</H3>
<PRE>
protected <A HREF="../../../java/awt/Rectangle.html">Rectangle</A> <B>childAlloc</B></PRE>
<DL>
<DD>A shape to use for the child allocation to avoid
 creating a lot of garbage.</DL>

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<A NAME="AsyncBoxView.ChildLocator(javax.swing.text.AsyncBoxView)"><!-- --></A><H3>
AsyncBoxView.ChildLocator</H3>
<PRE>
public <B>AsyncBoxView.ChildLocator</B>()</PRE>
<DL>
<DD>construct a child locator.</DL>

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<A NAME="childChanged(javax.swing.text.AsyncBoxView.ChildState)"><!-- --></A><H3>
childChanged</H3>
<PRE>
public void <B>childChanged</B>(<A HREF="../../../javax/swing/text/AsyncBoxView.ChildState.html">AsyncBoxView.ChildState</A>&nbsp;cs)</PRE>
<DL>
<DD>Notification that a child changed.  This can effect
 whether or not new offset calculations are needed.
 This is called by a ChildState object that has 
 changed it's major span.  This can therefore be
 called by multiple threads.</DL>
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<A NAME="paintChildren(java.awt.Graphics)"><!-- --></A><H3>
paintChildren</H3>
<PRE>
public void <B>paintChildren</B>(<A HREF="../../../java/awt/Graphics.html">Graphics</A>&nbsp;g)</PRE>
<DL>
<DD>Paint the children that intersect the clip area.</DL>
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<A NAME="getChildAllocation(int, java.awt.Shape)"><!-- --></A><H3>
getChildAllocation</H3>
<PRE>
public <A HREF="../../../java/awt/Shape.html">Shape</A> <B>getChildAllocation</B>(int&nbsp;index,
                                <A HREF="../../../java/awt/Shape.html">Shape</A>&nbsp;a)</PRE>
<DL>
<DD>Fetch the allocation to use for a child view.
 This will update the offsets for all children
 not yet updated before the given index.</DL>
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<A NAME="getViewIndexAtPoint(float, float, java.awt.Shape)"><!-- --></A><H3>
getViewIndexAtPoint</H3>
<PRE>
public int <B>getViewIndexAtPoint</B>(float&nbsp;x,
                               float&nbsp;y,
                               <A HREF="../../../java/awt/Shape.html">Shape</A>&nbsp;a)</PRE>
<DL>
<DD>Fetches the child view index at the given point.
 This is called by the various View methods that
 need to calculate which child to forward a message
 to.  This should be called by a block synchronized
 on this object, and would typically be followed
 with one or more calls to getChildAllocation that
 should also be in the synchronized block.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - the X coordinate >= 0<DD><CODE>y</CODE> - the Y coordinate >= 0<DD><CODE>a</CODE> - the allocation to the View<DT><B>Returns:</B><DD>the nearest child index</DL>
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<A NAME="getChildAllocation(int)"><!-- --></A><H3>
getChildAllocation</H3>
<PRE>
protected <A HREF="../../../java/awt/Shape.html">Shape</A> <B>getChildAllocation</B>(int&nbsp;index)</PRE>
<DL>
<DD>Fetch the allocation to use for a child view.
 <em>This does not update the offsets in the ChildState
 records.</em></DL>
<HR>

<A NAME="setAllocation(java.awt.Shape)"><!-- --></A><H3>
setAllocation</H3>
<PRE>
protected void <B>setAllocation</B>(<A HREF="../../../java/awt/Shape.html">Shape</A>&nbsp;a)</PRE>
<DL>
<DD>Copy the currently allocated shape into the Rectangle
 used to store the current allocation.  This would be 
 a floating point rectangle in a Java2D-specific implmentation.</DL>
<HR>

<A NAME="getViewIndexAtVisualOffset(float)"><!-- --></A><H3>
getViewIndexAtVisualOffset</H3>
<PRE>
protected int <B>getViewIndexAtVisualOffset</B>(float&nbsp;targetOffset)</PRE>
<DL>
<DD>Locate the view responsible for an offset into the box
 along the major axis.  Make sure that offsets are set
 on the ChildState objects up to the given target span
 past the desired offset.</DL>
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