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| </script><table class="titleTable" cellpadding="0" cellspacing="0" id="titleTable" style="display:none"><tr><td class="titleTableTitle" align="left">Apache Flex 4.16.1 API Reference </td><td class="titleTableTopNav" align="right"><a href="../../package-summary.html" onclick="loadClassListFrame('../../all-classes.html')">All Packages</a> | <a href="../../class-summary.html" onclick="loadClassListFrame('../../all-classes.html')">All Classes</a> | <a href="../../all-index-A.html" onclick="loadClassListFrame('../../index-list.html')">Index</a> | <a id="framesLink1" href="../../index.html?spark/layouts/ConstraintLayout.html&spark/layouts/class-list.html">Frames</a><a id="noFramesLink1" style="display:none" href="" onclick="parent.location=document.location"> No Frames </a></td><td class="titleTableLogo" align="right" rowspan="3"><img src="../../images/logo.jpg" class="logoImage" alt="AdobeLogo" title="AdobeLogo"></td></tr><tr class="titleTableRow2"><td class="titleTableSubTitle" id="subTitle" align="left">ConstraintLayout</td><td class="titleTableSubNav" id="subNav" align="right"><a href="#propertySummary">Properties</a> | <a href="#methodSummary">Methods</a></td></tr><tr class="titleTableRow3"><td colspan="3"> </td></tr></table><script language="javascript" type="text/javascript" xml:space="preserve"> |
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| </script><div xmlns:fn="http://www.w3.org/2005/xpath-functions" class="MainContent"><table class="classHeaderTable" cellpadding="0" cellspacing="0"><tr><td class="classHeaderTableLabel">Package</td><td><a href="package-detail.html" onclick="javascript:loadClassListFrame('class-list.html')">spark.layouts</a></td></tr><tr><td class="classHeaderTableLabel">Class</td><td class="classSignature">public class ConstraintLayout</td></tr><tr><td class="classHeaderTableLabel">Inheritance</td><td class="inheritanceList">ConstraintLayout <img src="../../images/inherit-arrow.gif" title="Inheritance" alt="Inheritance" class="inheritArrow"> <a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a> <img src="../../images/inherit-arrow.gif" title="Inheritance" alt="Inheritance" class="inheritArrow"> <a href="../../mx/utils/OnDemandEventDispatcher.html">OnDemandEventDispatcher</a> <img src="../../images/inherit-arrow.gif" title="Inheritance" alt="Inheritance" class="inheritArrow"> Object</td></tr><tr><td class="classHeaderTableLabel">Subclasses</td><td> <a href="../../spark/layouts/FormItemLayout.html">FormItemLayout</a></td></tr></table><p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Language Version : </b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Product Version : </b></td><td>Flex 4.5</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Runtime Versions : </b></td><td>Flash Player 10, AIR 1.5</td></tr></table><p></p><p></p><p></p><p></p> |
| The ConstraintLayout class arranges the layout elements based on their individual |
| settings and a set of constraint regions defined by constraint columns and |
| constraint rows. Although you can use all of the properties and constraints from |
| BasicLayout to position and size elements, ConstraintLayout gives you the ability |
| to create sibling-relative layouts by constraining elements to the specified |
| columns and rows. |
| <p> |
| <b>Note: </b>The Spark list-based controls (the Spark List control and its subclasses |
| such as ButtonBar, ComboBox, DropDownList, and TabBar) do not support the ConstraintLayout class. |
| Do not use ConstraintLayout with the Spark list-based controls.</p> |
| <p>Per-element supported constraints are <code>left</code>, <code>right</code>, |
| <code>top</code>, <code>bottom</code>, <code>baseline</code>, |
| <code>percentWidth</code>, and <code>percentHeight</code>. |
| Element's minimum and maximum sizes will always be respected.</p> |
| |
| <p>Columns and rows may have an explicit size or content size (no explicit size). |
| Explicit size regions will be fixed at their specified size, while content size |
| regions will stretch to fit only the elements constrained to them. If multiple |
| content size regions are spanned by an element, the space will be divided |
| equally among the content size regions.</p> |
| <p>The measured size of the container is calculated from the elements, their |
| constraints, their preferred sizes, and the sizes of the rows and columns. |
| The size of each row and column is just big enough to hold all of the elements |
| constrained to it at their preferred sizes with constraints satisfied. The measured |
| size of the container is big enough to hold all of the columns and rows as well as |
| any other elements left at their preferred sizes with constraints satisfied. </p> |
| <p>During a call to the <code>updateDisplayList()</code> method, |
| the element's size is determined according to |
| the rules in the following order of precedence (the element's minimum and |
| maximum sizes are always respected):</p> |
| <ul> |
| <li>If the element has <code>percentWidth</code> or <code>percentHeight</code> set, |
| then its size is calculated as a percentage of the available size, where the available |
| size is the region or container size minus any <code>left</code>, <code>right</code>, |
| <code>top</code>, or <code>bottom</code> constraints.</li> |
| <li>If the element has both left and right constraints, it's width is |
| set to be the region's or container's width minus the <code>left</code> |
| and <code>right</code> constraints.</li> |
| |
| <li>If the element has both <code>top</code> and <code>bottom</code> constraints, |
| it's height is set to be the container's height minus the <code>top</code> |
| and <code>bottom</code> constraints.</li> |
| <li>The element is set to its preferred width and/or height.</li> |
| </ul> |
| |
| <p>The element's position is determined according to the rules in the following |
| order of precedence:</p> |
| <ul> |
| <li>If element's baseline is specified, then the element is positioned in |
| the vertical direction such that its <code>baselinePosition</code> (usually the base line |
| of its first line of text) is aligned with <code>baseline</code> constraint.</li> |
| <li>If element's <code>top</code> or <code>left</code> constraints |
| are specified, then the element is |
| positioned such that the top-left corner of the element's layout bounds is |
| offset from the top-left corner of the container by the specified values.</li> |
| <li>If element's <code>bottom</code> or <code>right</code> constraints are specified, |
| then the element is positioned such that the bottom-right corner |
| of the element's layout bounds is |
| offset from the bottom-right corner of the container by the specified values.</li> |
| |
| <li>When no constraints determine the position in the horizontal or vertical |
| direction, the element is positioned according to its x and y coordinates.</li> |
| </ul> |
| <p>The content size of the container is calculated as the maximum of the |
| coordinates of the bottom-right corner of all the layout elements and |
| constraint regions.</p> |
| |
| <p></p><br/><hr></div><a name="propertySummary"></a><div class="summarySection"><div class="summaryTableTitle">Public Properties</div><div class="showHideLinks"><div id="hideInheritedProperty" class="hideInheritedProperty"><a class="showHideLink" href="#propertySummary" onclick="javascript:setInheritedVisible(false,'Property');"><img class="showHideLinkImage" src="../../images/expanded.gif"> Hide Inherited Public Properties</a></div><div id="showInheritedProperty" class="showInheritedProperty"><a class="showHideLink" href="#propertySummary" onclick="javascript:setInheritedVisible(true,'Property');"><img class="showHideLinkImage" src="../../images/collapsed.gif"> Show Inherited Public Properties</a></div></div><table cellspacing="0" cellpadding="3" class="summaryTable " id="summaryTableProperty"><tr><th> </th><th colspan="2">Property</th><th class="summaryTableOwnerCol">Defined By</th></tr><tr class="hideInheritedProperty"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html#clipAndEnableScrolling" class="signatureLink">clipAndEnableScrolling</a> : Boolean<div class="summaryTableDescription"> |
| If true, specifies to clip the children to the boundaries of the viewport.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class=""><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"> </td><td class="summaryTableSignatureCol"><a href="#constraintColumns" class="signatureLink">constraintColumns</a> : Vector.<<a href="../../mx/containers/utilityClasses/ConstraintColumn.html">ConstraintColumn</a>><div class="summaryTableDescription"> |
| A Vector of ConstraintColumn instances that partition the target container.</div></td><td class="summaryTableOwnerCol">ConstraintLayout</td></tr><tr class=""><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"> </td><td class="summaryTableSignatureCol"><a href="#constraintRows" class="signatureLink">constraintRows</a> : Vector.<<a href="../../mx/containers/utilityClasses/ConstraintRow.html">ConstraintRow</a>><div class="summaryTableDescription"> |
| A Vector of ConstraintRow instances that partition the target container.</div></td><td class="summaryTableOwnerCol">ConstraintLayout</td></tr><tr class="hideInheritedProperty"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html#dropIndicator" class="signatureLink">dropIndicator</a> : DisplayObject<div class="summaryTableDescription"> |
| The DisplayObject that this layout uses for |
| the drop indicator during a drag-and-drop operation.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProperty"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html#horizontalScrollPosition" class="signatureLink">horizontalScrollPosition</a> : Number<div class="summaryTableDescription"> |
| The x coordinate of the origin of the viewport in the component's coordinate system, |
| where the default value is (0,0) corresponding to the upper-left corner of the component.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProperty"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html#target" class="signatureLink">target</a> : <a href="../../spark/components/supportClasses/GroupBase.html">GroupBase</a><div class="summaryTableDescription"> |
| The GroupBase container whose elements are measured, sized and positioned |
| by this layout.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProperty"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html#typicalLayoutElement" class="signatureLink">typicalLayoutElement</a> : <a href="../../mx/core/ILayoutElement.html">ILayoutElement</a><div class="summaryTableDescription"> |
| Used by layouts when fixed row/column sizes are requested but |
| a specific size isn't specified.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProperty"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html#useVirtualLayout" class="signatureLink">useVirtualLayout</a> : Boolean<div class="summaryTableDescription"> |
| A container can hold any number of children.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProperty"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html#verticalScrollPosition" class="signatureLink">verticalScrollPosition</a> : Number<div class="summaryTableDescription"> |
| The y coordinate of the origin of the viewport in the component's coordinate system, |
| where the default value is (0,0) corresponding to the upper-left corner of the component.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr></table></div><a name="methodSummary"></a><div class="summarySection"><div class="summaryTableTitle">Public Methods </div><div class="showHideLinks"><div id="hideInheritedMethod" class="hideInheritedMethod"><a class="showHideLink" href="#methodSummary" onclick="javascript:setInheritedVisible(false,'Method');"><img class="showHideLinkImage" src="../../images/expanded.gif"> Hide Inherited Public Methods</a></div><div id="showInheritedMethod" class="showInheritedMethod"><a class="showHideLink" href="#methodSummary" onclick="javascript:setInheritedVisible(true,'Method');"><img class="showHideLinkImage" src="../../images/collapsed.gif"> Show Inherited Public Methods</a></div></div><table cellspacing="0" cellpadding="3" class="summaryTable " id="summaryTableMethod"><tr><th> </th><th colspan="2">Method</th><th class="summaryTableOwnerCol">Defined By</th></tr><tr class=""><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"> </td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="#ConstraintLayout()" class="signatureLink">ConstraintLayout</a>()</div><div class="summaryTableDescription"> |
| Constructor.</div></td><td class="summaryTableOwnerCol">ConstraintLayout</td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../mx/utils/OnDemandEventDispatcher.html#addEventListener()" class="signatureLink">addEventListener</a>(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void</div><div class="summaryTableDescription"> |
| </div></td><td class="summaryTableOwnerCol"><a href="../../mx/utils/OnDemandEventDispatcher.html">OnDemandEventDispatcher</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#calculateDropLocation()" class="signatureLink">calculateDropLocation</a>(dragEvent:<a href="../../mx/events/DragEvent.html">DragEvent</a>):<a href="../../spark/layouts/supportClasses/DropLocation.html">DropLocation</a></div><div class="summaryTableDescription"> |
| Calculates the drop location in the data provider of the drop target for |
| the specified dragEvent.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#clearVirtualLayoutCache()" class="signatureLink">clearVirtualLayoutCache</a>():void</div><div class="summaryTableDescription"> |
| When useVirtualLayout is true, |
| this method can be used by the layout target |
| to clear cached layout information when the target changes.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../mx/utils/OnDemandEventDispatcher.html#dispatchEvent()" class="signatureLink">dispatchEvent</a>(event:Event):Boolean</div><div class="summaryTableDescription"> |
| </div></td><td class="summaryTableOwnerCol"><a href="../../mx/utils/OnDemandEventDispatcher.html">OnDemandEventDispatcher</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#elementAdded()" class="signatureLink">elementAdded</a>(index:int):void</div><div class="summaryTableDescription"> |
| Called by the target after a layout element |
| has been added and before the target's size and display list are |
| validated.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#elementRemoved()" class="signatureLink">elementRemoved</a>(index:int):void</div><div class="summaryTableDescription"> |
| This method must is called by the target after a layout element |
| has been removed and before the target's size and display list are |
| validated.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getElementBounds()" class="signatureLink">getElementBounds</a>(index:int):Rectangle</div><div class="summaryTableDescription"> |
| Returns the specified element's layout bounds as a Rectangle or null |
| if the index is invalid, the corresponding element is null, |
| includeInLayout=false, |
| or if this layout's target property is null.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getHorizontalScrollPositionDelta()" class="signatureLink">getHorizontalScrollPositionDelta</a>(navigationUnit:uint):Number</div><div class="summaryTableDescription"> |
| Returns the change to the horizontal scroll position to handle |
| different scrolling options.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getNavigationDestinationIndex()" class="signatureLink">getNavigationDestinationIndex</a>(currentIndex:int, navigationUnit:uint, arrowKeysWrapFocus:Boolean):int</div><div class="summaryTableDescription"> |
| Delegation method that determines which item |
| to navigate to based on the current item in focus |
| and user input in terms of NavigationUnit.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getScrollPositionDeltaToElement()" class="signatureLink">getScrollPositionDeltaToElement</a>(index:int):Point</div><div class="summaryTableDescription"> |
| Computes the verticalScrollPosition and |
| horizontalScrollPosition deltas needed to |
| scroll the element at the specified index into view.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getVerticalScrollPositionDelta()" class="signatureLink">getVerticalScrollPositionDelta</a>(navigationUnit:uint):Number</div><div class="summaryTableDescription"> |
| Returns the change to the vertical scroll position to handle |
| different scrolling options.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../mx/utils/OnDemandEventDispatcher.html#hasEventListener()" class="signatureLink">hasEventListener</a>(type:String):Boolean</div><div class="summaryTableDescription"> |
| </div></td><td class="summaryTableOwnerCol"><a href="../../mx/utils/OnDemandEventDispatcher.html">OnDemandEventDispatcher</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#hideDropIndicator()" class="signatureLink">hideDropIndicator</a>():void</div><div class="summaryTableDescription"> |
| Hides the previously shown drop indicator, |
| created by the showDropIndicator() method, |
| removes it from the display list and also stops the drag scrolling.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#measure()" class="signatureLink">measure</a>():void</div><div class="summaryTableDescription"> |
| Measures the target's default size based on its content, and optionally |
| measures the target's default minimum size.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../mx/utils/OnDemandEventDispatcher.html#removeEventListener()" class="signatureLink">removeEventListener</a>(type:String, listener:Function, useCapture:Boolean = false):void</div><div class="summaryTableDescription"> |
| </div></td><td class="summaryTableOwnerCol"><a href="../../mx/utils/OnDemandEventDispatcher.html">OnDemandEventDispatcher</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#showDropIndicator()" class="signatureLink">showDropIndicator</a>(dropLocation:<a href="../../spark/layouts/supportClasses/DropLocation.html">DropLocation</a>):void</div><div class="summaryTableDescription"> |
| Sizes, positions and parents the drop indicator based on the specified |
| drop location.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#updateDisplayList()" class="signatureLink">updateDisplayList</a>(width:Number, height:Number):void</div><div class="summaryTableDescription"> |
| Sizes and positions the target's elements.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#updateScrollRect()" class="signatureLink">updateScrollRect</a>(w:Number, h:Number):void</div><div class="summaryTableDescription"> |
| Called by the target at the end of its updateDisplayList |
| to have the layout update its scrollRect.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../mx/utils/OnDemandEventDispatcher.html#willTrigger()" class="signatureLink">willTrigger</a>(type:String):Boolean</div><div class="summaryTableDescription"> |
| </div></td><td class="summaryTableOwnerCol"><a href="../../mx/utils/OnDemandEventDispatcher.html">OnDemandEventDispatcher</a></td></tr></table></div><a name="methodSummary"></a><a name="protectedMethodSummary"></a><div class="summarySection"><div class="summaryTableTitle">Protected Methods </div><div class="showHideLinks"><div id="hideInheritedProtectedMethod" class="hideInheritedProtectedMethod"><a class="showHideLink" href="#protectedMethodSummary" onclick="javascript:setInheritedVisible(false,'ProtectedMethod');"><img class="showHideLinkImage" src="../../images/expanded.gif"> Show Inherited Protected Methods</a></div><div id="showInheritedProtectedMethod" class="showInheritedProtectedMethod"><a class="showHideLink" href="#protectedMethodSummary" onclick="javascript:setInheritedVisible(true,'ProtectedMethod');"><img class="showHideLinkImage" src="../../images/collapsed.gif"> Show Inherited Protected Methods</a></div></div><table cellspacing="0" cellpadding="3" class="summaryTable " id="summaryTableProtectedMethod"><tr><th> </th><th colspan="2">Method</th><th class="summaryTableOwnerCol">Defined By</th></tr><tr class="hideInheritedProtectedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#calculateDragScrollDelta()" class="signatureLink">calculateDragScrollDelta</a>(dropLocation:<a href="../../spark/layouts/supportClasses/DropLocation.html">DropLocation</a>, elapsedTime:Number):Point</div><div class="summaryTableDescription"> |
| Calculates how much to scroll for the specified dropLocation |
| during a drag and drop gesture.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProtectedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#calculateDropIndex()" class="signatureLink">calculateDropIndex</a>(x:Number, y:Number):int</div><div class="summaryTableDescription"> |
| Returns the index where a new item should be inserted if |
| the user releases the mouse at the specified coordinates |
| while completing a drag and drop gesture.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProtectedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#calculateDropIndicatorBounds()" class="signatureLink">calculateDropIndicatorBounds</a>(dropLocation:<a href="../../spark/layouts/supportClasses/DropLocation.html">DropLocation</a>):Rectangle</div><div class="summaryTableDescription"> |
| Calculates the bounds for the drop indicator that provides visual feedback |
| to the user of where the items will be inserted at the end of a drag and drop |
| gesture.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProtectedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getElementBoundsAboveScrollRect()" class="signatureLink">getElementBoundsAboveScrollRect</a>(scrollRect:Rectangle):Rectangle</div><div class="summaryTableDescription"> |
| Returns the bounds of the first layout element that either spans or |
| is above the scrollRect's top edge.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProtectedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getElementBoundsBelowScrollRect()" class="signatureLink">getElementBoundsBelowScrollRect</a>(scrollRect:Rectangle):Rectangle</div><div class="summaryTableDescription"> |
| Returns the bounds of the first layout element that either spans or |
| is below the scrollRect's bottom edge.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProtectedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getElementBoundsLeftOfScrollRect()" class="signatureLink">getElementBoundsLeftOfScrollRect</a>(scrollRect:Rectangle):Rectangle</div><div class="summaryTableDescription"> |
| Returns the bounds of the first layout element that either spans or |
| is to the left of the scrollRect's left edge.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProtectedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getElementBoundsRightOfScrollRect()" class="signatureLink">getElementBoundsRightOfScrollRect</a>(scrollRect:Rectangle):Rectangle</div><div class="summaryTableDescription"> |
| Returns the bounds of the first layout element that either spans or |
| is to the right of the scrollRect's right edge.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class="hideInheritedProtectedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#getScrollRect()" class="signatureLink">getScrollRect</a>():Rectangle</div><div class="summaryTableDescription"> |
| Returns the bounds of the target's scroll rectangle in layout coordinates.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr><tr class=""><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"> </td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="#layoutContent()" class="signatureLink">layoutContent</a>(unscaledWidth:Number, unscaledHeight:Number):void</div><div class="summaryTableDescription"> |
| Lays out the elements of the layout target using the current |
| widths and heights of the columns and rows.</div></td><td class="summaryTableOwnerCol">ConstraintLayout</td></tr><tr class=""><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"> </td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="#measureAndPositionColumnsAndRows()" class="signatureLink">measureAndPositionColumnsAndRows</a>(constrainedWidth:Number, constrainedHeight:Number):void</div><div class="summaryTableDescription"> |
| Used by FormItemLayout to measure and set new column widths |
| and row heights before laying out the elements.</div></td><td class="summaryTableOwnerCol">ConstraintLayout</td></tr><tr class="hideInheritedProtectedMethod"><td class="summaryTablePaddingCol"> </td><td class="summaryTableInheritanceCol"><img src="../../images/inheritedSummary.gif" alt="Inherited" title="Inherited" class="inheritedSummaryImage"></td><td class="summaryTableSignatureCol"><div class="summarySignature"><a href="../../spark/layouts/supportClasses/LayoutBase.html#scrollPositionChanged()" class="signatureLink">scrollPositionChanged</a>():void</div><div class="summaryTableDescription"> |
| Called when the verticalScrollPosition or |
| horizontalScrollPosition properties change.</div></td><td class="summaryTableOwnerCol"><a href="../../spark/layouts/supportClasses/LayoutBase.html">LayoutBase</a></td></tr></table></div><script language="javascript" type="text/javascript"><!-- |
| showHideInherited(); |
| --></script><div class="MainContent"><div class="detailSectionHeader">Property Detail</div><a name="propertyDetail"></a><a name="constraintColumns"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">constraintColumns</td><td class="detailHeaderType">property</td></tr></table><div class="detailBody"><code>constraintColumns:Vector.<<a href="../../mx/containers/utilityClasses/ConstraintColumn.html">ConstraintColumn</a>></code><p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Language Version : </b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Product Version : </b></td><td>Flex 4.5</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Runtime Versions : </b></td><td>Flash Player 10, AIR 1.5</td></tr></table><p></p><p></p><p> |
| A Vector of ConstraintColumn instances that partition the target container. |
| The ConstraintColumn instance at index 0 is the left-most column; |
| indices increase from left to right. |
| |
| </p><br/><span class="label"> Implementation </span><br/><code> public function get constraintColumns():Vector.<<a href="../../mx/containers/utilityClasses/ConstraintColumn.html">ConstraintColumn</a>></code><br/><code> public function set constraintColumns(value:Vector.<<a href="../../mx/containers/utilityClasses/ConstraintColumn.html">ConstraintColumn</a>>):void</code><br/></div><a name="propertyDetail"></a><a name="constraintRows"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">constraintRows</td><td class="detailHeaderType">property</td><td class="detailHeaderRule"> </td></tr></table><div class="detailBody"><code>constraintRows:Vector.<<a href="../../mx/containers/utilityClasses/ConstraintRow.html">ConstraintRow</a>></code><p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Language Version : </b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Product Version : </b></td><td>Flex 4.5</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Runtime Versions : </b></td><td>Flash Player 10, AIR 1.5</td></tr></table><p></p><p></p><p> |
| A Vector of ConstraintRow instances that partition the target container. |
| The ConstraintRow instance at index 0 is the top-most column; |
| indices increase from top to bottom. |
| |
| </p><br/><span class="label"> Implementation </span><br/><code> public function get constraintRows():Vector.<<a href="../../mx/containers/utilityClasses/ConstraintRow.html">ConstraintRow</a>></code><br/><code> public function set constraintRows(value:Vector.<<a href="../../mx/containers/utilityClasses/ConstraintRow.html">ConstraintRow</a>>):void</code><br/></div><a name="constructorDetail"></a><div class="detailSectionHeader">Constructor Detail</div><a name="ConstraintLayout()"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">ConstraintLayout</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">Constructor</td></tr></table><div class="detailBody"><code>public function ConstraintLayout()</code><p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Language Version : </b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Product Version : </b></td><td>Flex 4.5</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Runtime Versions : </b></td><td>Flash Player 10, AIR 1.5</td></tr></table><p></p><p> |
| Constructor. |
| |
| </p></div><a name="methodDetail"></a><div class="detailSectionHeader">Method Detail</div><a name="layoutContent()"></a><a name="layoutContent(Number,Number)"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">layoutContent</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td></tr></table><div class="detailBody"><code> protected function layoutContent(unscaledWidth:Number, unscaledHeight:Number):void</code><p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Language Version : </b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Product Version : </b></td><td>Flex 4.5</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Runtime Versions : </b></td><td>Flash Player 10, AIR 1.5</td></tr></table><p></p><p></p><p> |
| Lays out the elements of the layout target using the current |
| widths and heights of the columns and rows. Used by FormItemLayout |
| after setting new column widths to lay elements using those new widths. |
| </p><p><span class="label"> Parameters </span><table cellpadding="0" cellspacing="0" border="0"><tr><td width="20px"></td><td><code><span class="label">unscaledWidth</span>:Number</code> — Specifies the width of the component, in pixels, |
| in the component's coordinates, regardless of the value of the |
| <code>scaleX</code> property of the component. |
| </td></tr><tr><td class="paramSpacer"> </td></tr><tr><td width="20px"></td><td><code><span class="label">unscaledHeight</span>:Number</code> — Specifies the height of the component, in pixels, |
| in the component's coordinates, regardless of the value of the |
| <code>scaleY</code> property of the component. |
| |
| </td></tr></table></p></div><a name="measureAndPositionColumnsAndRows()"></a><a name="measureAndPositionColumnsAndRows(Number,Number)"></a><table class="detailHeader" cellpadding="0" cellspacing="0"><tr><td class="detailHeaderName">measureAndPositionColumnsAndRows</td><td class="detailHeaderParens">()</td><td class="detailHeaderType">method</td><td class="detailHeaderRule"> </td></tr></table><div class="detailBody"><code> protected function measureAndPositionColumnsAndRows(constrainedWidth:Number, constrainedHeight:Number):void</code><p></p><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Language Version : </b></td><td>ActionScript 3.0</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Product Version : </b></td><td>Flex 4.5</td></tr></table><table cellpadding="0" cellspacing="0" border="0"><tr><td style="white-space:nowrap" valign="top"><b> Runtime Versions : </b></td><td>Flash Player 10, AIR 1.5</td></tr></table><p></p><p></p><p> |
| Used by FormItemLayout to measure and set new column widths |
| and row heights before laying out the elements. |
| |
| </p><p><span class="label"> Parameters </span><table cellpadding="0" cellspacing="0" border="0"><tr><td width="20px"></td><td><code><span class="label">constrainedWidth</span>:Number</code> (default = <code>NaN</code>)<code></code> — The total width available for columns to stretch |
| or shrink their percent width columns. If NaN, percent width columns |
| are unconstrained and fit to their content. |
| </td></tr><tr><td class="paramSpacer"> </td></tr><tr><td width="20px"></td><td><code><span class="label">constrainedHeight</span>:Number</code> (default = <code>NaN</code>)<code></code> — The total height available for rows to stretch |
| or shrink their percent height rows. If NaN, percent height rows |
| are unconstrained and fit to their content. |
| |
| </td></tr></table></p></div><br/><br/><hr><br/><p></p><center class="copyright"><footer>The Apache Software Foundation</footer><br/>Wed Nov 15 2017, 09:50 AM +01:00 </center></div></body></html><!--The Apache Software Foundation<br/>Wed Nov 15 2017, 09:50 AM +01:00 --> |
