| Package | spark.layouts |
| Class | public class TileLayout |
| Inheritance | TileLayout  LayoutBase OnDemandEventDispatcher Object |
| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Per-element supported constraints are
percentWidth and percentHeight.
Element's minimum and maximum sizes are always be respected and
where possible, an element's size is limited to less then or equal
of the cell size.
When not explicitly set, the columnWidth property
is calculated as the maximum preferred bounds width of all elements
and the columnHeight property is calculated
as the maximum preferred bounds height of all elements.
When not explicitly set, the columnCount and
rowCount properties are calculated from
any explicit width and height settings for the layout target,
and columnWidth and columnHeight.
In case none is specified, the columnCount and rowCount
values are picked so that the resulting pixel area is as square as possible.
The measured size is calculated from the columnCount, rowCount,
columnWidth, rowHeight properties and the gap sizes.
The default measured size, when no properties were explicitly set, is as square as possible area and is large enough to fit all elements.
In other cases the measured size may not be big enough to fit all elements.
For example, when both columnCount and rowCount are explicitly set to values
such that columnCount * rowCount < element count.
The minimum measured size is calculated the same way as the measured size but it's guaranteed to encompass enough rows and columns along the minor axis to fit all elements.
MXML Syntax
Show MXML Syntax
Hide MXML SyntaxThe <s:TileLayout> tag inherits all of the tag
attributes of its superclass and adds the following tag attributes:
<s:TileLayout
Properties
columnAlign="left"
columnWidth="NaN"
horizontalAlign="justify"
horizontalGap="6"
orientation="rows"
requestedColumnCount="-1"
requestedRowCount="-1"
rowAlign="top"
rowCount="-1"
rowHeight="NaN"
verticalAlign="justify"
verticalGap="6"
/>
More examples
Set the layout of a Spark container
Set the padding and gap of a layout
Set the alignment of a layout
Set the row height or column width of a layout
| Property | Defined By | ||
|---|---|---|---|
 | clipAndEnableScrolling : Boolean
If true, specifies to clip the children to the boundaries of the viewport. | LayoutBase | |
| columnAlign : String
Specifies how to justify the fully visible columns to the container width. | TileLayout | ||
| columnCount : int [read-only]
Contain the actual column count. | TileLayout | ||
| columnWidth : Number
Contain the actual column width, in pixels. | TileLayout | ||
| constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
| dropIndicator : DisplayObject
The DisplayObject that this layout uses for
the drop indicator during a drag-and-drop operation. | LayoutBase | |
| horizontalAlign : String
Specifies how to align the elements within the cells in the horizontal direction. | TileLayout | ||
| horizontalGap : Number
Horizontal space between columns, in pixels. | TileLayout | ||
| horizontalScrollPosition : Number
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. | LayoutBase | |
| orientation : String
Specifies whether elements are arranged row by row or
column by column. | TileLayout | ||
| paddingBottom : Number
Number of pixels between the container's bottom edge
and the bottom edge of the last layout element. | TileLayout | ||
| paddingLeft : Number
The minimum number of pixels between the container's left edge and
the left edge of the layout element. | TileLayout | ||
| paddingRight : Number
The minimum number of pixels between the container's right edge and
the right edge of the layout element. | TileLayout | ||
| paddingTop : Number
Number of pixels between the container's top edge
and the top edge of the first layout element. | TileLayout | ||
| requestedColumnCount : int
Number of columns to be displayed. | TileLayout | ||
| requestedRowCount : int
Number of rows to be displayed. | TileLayout | ||
| rowAlign : String
Specifies how to justify the fully visible rows to the container height. | TileLayout | ||
| rowCount : int [read-only]
The row count. | TileLayout | ||
| rowHeight : Number
The row height, in pixels. | TileLayout | ||
| target : GroupBase
The GroupBase container whose elements are measured, sized and positioned
by this layout. | LayoutBase | |
| typicalLayoutElement : ILayoutElement
Used by layouts when fixed row/column sizes are requested but
a specific size isn't specified. | LayoutBase | |
| useVirtualLayout : Boolean
A container can hold any number of children. | LayoutBase | |
| verticalAlign : String
Specifies how to align the elements within the cells in the vertical direction. | TileLayout | ||
| verticalGap : Number
Vertical space between rows, in pixels. | TileLayout | ||
| verticalScrollPosition : Number
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. | LayoutBase | |
| Method | Defined By | ||
|---|---|---|---|
Constructor. | TileLayout | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | OnDemandEventDispatcher | |
|
Calculates the drop location in the data provider of the drop target for
the specified dragEvent. | LayoutBase | |
|
When useVirtualLayout is true,
this method can be used by the layout target
to clear cached layout information when the target changes. | LayoutBase | |
|
Dispatches an event into the event flow. | OnDemandEventDispatcher | |
|
Called by the target after a layout element
has been added and before the target's size and display list are
validated. | LayoutBase | |
|
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. | LayoutBase | |
|
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. | LayoutBase | |
|
Returns the change to the horizontal scroll position to handle
different scrolling options. | LayoutBase | |
| getNavigationDestinationIndex(currentIndex:int, navigationUnit:uint, arrowKeysWrapFocus:Boolean):int
Delegation method that determines which item
to navigate to based on the current item in focus
and user input in terms of NavigationUnit. | LayoutBase | |
|
Computes the verticalScrollPosition and
horizontalScrollPosition deltas needed to
scroll the element at the specified index into view. | LayoutBase | |
|
Returns the change to the vertical scroll position to handle
different scrolling options. | LayoutBase | |
|
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | OnDemandEventDispatcher | |
|
Indicates whether an object has a specified property defined. | Object | |
|
Hides the previously shown drop indicator,
created by the showDropIndicator() method,
removes it from the display list and also stops the drag scrolling. | LayoutBase | |
|
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
|
Measures the target's default size based on its content, and optionally
measures the target's default minimum size. | LayoutBase | |
|
Indicates whether the specified property exists and is enumerable. | Object | |
|
Removes a listener from the EventDispatcher object. | OnDemandEventDispatcher | |
|
Sets the availability of a dynamic property for loop operations. | Object | |
|
Sizes, positions and parents the drop indicator based on the specified
drop location. | LayoutBase | |
|
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
|
Returns the string representation of the specified object. | Object | |
|
Sizes and positions the target's elements. | LayoutBase | |
|
Called by the target at the end of its updateDisplayList
to have the layout update its scrollRect. | LayoutBase | |
|
Returns the primitive value of the specified object. | Object | |
|
Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type. | OnDemandEventDispatcher | |
| Method | Defined By | ||
|---|---|---|---|
|
Calculates how much to scroll for the specified dropLocation
during a drag and drop gesture. | LayoutBase | |
[override]
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. | TileLayout | ||
[override]
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. | TileLayout | ||
|
Returns the bounds of the first layout element that either spans or
is above the scrollRect's top edge. | LayoutBase | |
|
Returns the bounds of the first layout element that either spans or
is below the scrollRect's bottom edge. | LayoutBase | |
|
Returns the bounds of the first layout element that either spans or
is to the left of the scrollRect's left edge. | LayoutBase | |
|
Returns the bounds of the first layout element that either spans or
is to the right of the scrollRect's right edge. | LayoutBase | |
|
Returns the bounds of the target's scroll rectangle in layout coordinates. | LayoutBase | |
|
Called when the verticalScrollPosition or
horizontalScrollPosition properties change. | LayoutBase | |
columnAlign | property |
columnAlign:String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies how to justify the fully visible columns to the container width.
ActionScript values can be ColumnAlign.LEFT, ColumnAlign.JUSTIFY_USING_GAP
and ColumnAlign.JUSTIFY_USING_WIDTH.
MXML values can be "left", "justifyUsingGap" and "justifyUsingWidth".
When set to ColumnAlign.LEFT it turns column justification off.
There may be partially visible columns or whitespace between the last column and
the right edge of the container. This is the default value.
When set to ColumnAlign.JUSTIFY_USING_GAP the horizontalGap
actual value increases so that
the last fully visible column right edge aligns with the container's right edge.
In case there is only a single fully visible column, the horizontalGap actual value
increases so that it pushes any partially visible column beyond the right edge
of the container.
Note that explicitly setting the horizontalGap property does not turn off
justification. It only determines the initial gap value.
Justification may increases it.
When set to ColumnAlign.JUSTIFY_USING_WIDTH the columnWidth
actual value increases so that
the last fully visible column right edge aligns with the container's right edge.
Note that explicitly setting the columnWidth property does not turn off justification.
It only determines the initial column width value.
Justification may increases it.
The default value is ColumnAlign.LEFT.
Implementation
public function get columnAlign():String public function set columnAlign(value:String):voidRelated API Elements
columnCount | property |
columnCount:int [read-only] | Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Contain the actual column count.
The default value is -1.
This property can be used as the source for data binding. When this property is modified, it dispatches the propertyChange event.
Implementation
public function get columnCount():intRelated API Elements
columnWidth | property |
columnWidth:Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Contain the actual column width, in pixels.
If not explicitly set, the column width is determined from the width of the widest element.
If the columnAlign property is set
to "justifyUsingWidth", the column width grows to the
container width to justify the fully-visible columns.
The default value is NaN.
This property can be used as the source for data binding. When this property is modified, it dispatches the propertyChange event.
Implementation
public function get columnWidth():Number public function set columnWidth(value:Number):voidRelated API Elements
horizontalAlign | property |
horizontalAlign:String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies how to align the elements within the cells in the horizontal direction.
Supported values are
HorizontalAlign.LEFT,
HorizontalAlign.CENTER,
HorizontalAlign.RIGHT,
HorizontalAlign.JUSTIFY.
When set to HorizontalAlign.JUSTIFY the width of each
element is set to the columnWidth.
The default value is HorizontalAlign.JUSTIFY.
Implementation
public function get horizontalAlign():String public function set horizontalAlign(value:String):voidhorizontalGap | property |
horizontalGap:Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Horizontal space between columns, in pixels.
The default value is 6.
This property can be used as the source for data binding. When this property is modified, it dispatches the propertyChange event.
Implementation
public function get horizontalGap():Number public function set horizontalGap(value:Number):voidRelated API Elements
orientation | property |
orientation:String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies whether elements are arranged row by row or
column by column.
ActionScript values can be TileOrientation.ROWS and
TileOrientation.COLUMNS.
MXML values can be "rows" and "columns".
The default value is TileOrientation.ROWS.
Implementation
public function get orientation():String public function set orientation(value:String):voidpaddingBottom | property |
paddingBottom:Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Number of pixels between the container's bottom edge and the bottom edge of the last layout element.
The default value is 0.
Implementation
public function get paddingBottom():Number public function set paddingBottom(value:Number):voidpaddingLeft | property |
paddingLeft:Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The minimum number of pixels between the container's left edge and the left edge of the layout element.
The default value is 0.
Implementation
public function get paddingLeft():Number public function set paddingLeft(value:Number):voidpaddingRight | property |
paddingRight:Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The minimum number of pixels between the container's right edge and the right edge of the layout element.
The default value is 0.
Implementation
public function get paddingRight():Number public function set paddingRight(value:Number):voidpaddingTop | property |
paddingTop:Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Number of pixels between the container's top edge and the top edge of the first layout element.
The default value is 0.
Implementation
public function get paddingTop():Number public function set paddingTop(value:Number):voidrequestedColumnCount | property |
requestedColumnCount:int| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Number of columns to be displayed.
Set to -1 to allow the TileLayout to determine the column count automatically.
If the orientation property is set to TileOrientation.ROWS,
then setting this property has no effect
In this case, the rowCount is explicitly set, and the
container width is explicitly set.
The default value is -1.
Implementation
public function get requestedColumnCount():int public function set requestedColumnCount(value:int):voidRelated API Elements
requestedRowCount | property |
requestedRowCount:int| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Number of rows to be displayed.
Set to -1 to remove explicit override and allow the TileLayout to determine the row count automatically.
If the orientation property is set to
TileOrientation.COLUMNS, setting this property has no effect.
in this case, columnCount is explicitly set, and the
container height is explicitly set.
The default value is -1.
Implementation
public function get requestedRowCount():int public function set requestedRowCount(value:int):voidRelated API Elements
rowAlign | property |
rowAlign:String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies how to justify the fully visible rows to the container height.
ActionScript values can be RowAlign.TOP, RowAlign.JUSTIFY_USING_GAP
and RowAlign.JUSTIFY_USING_HEIGHT.
MXML values can be "top", "justifyUsingGap" and "justifyUsingHeight".
When set to RowAlign.TOP it turns column justification off.
There might be partially visible rows or whitespace between the last row and
the bottom edge of the container. This is the default value.
When set to RowAlign.JUSTIFY_USING_GAP the verticalGap
actual value increases so that
the last fully visible row bottom edge aligns with the container's bottom edge.
In case there is only a single fully visible row, the value of verticalGap
increases so that it pushes any partially visible row beyond the bottom edge
of the container. Note that explicitly setting the verticalGap does not turn off
justification, but just determines the initial gap value.
Justification can then increases it.
When set to RowAlign.JUSTIFY_USING_HEIGHT the rowHeight
actual value increases so that
the last fully visible row bottom edge aligns with the container's bottom edge. Note that
explicitly setting the rowHeight does not turn off justification, but
determines the initial row height value.
Justification can then increase it.
The default value is RowAlign.TOP.
Implementation
public function get rowAlign():String public function set rowAlign(value:String):voidRelated API Elements
rowCount | property |
rowCount:int [read-only] | Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The row count.
The default value is -1.
This property can be used as the source for data binding. When this property is modified, it dispatches the propertyChange event.
Implementation
public function get rowCount():intRelated API Elements
rowHeight | property |
rowHeight:Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
The row height, in pixels.
If not explicitly set, the row height is determined from the maximum of elements' height.
IfrowAlign is set to "justifyUsingHeight", the actual row height
increases to justify the fully-visible rows to the container height.
The default value is NaN.
This property can be used as the source for data binding. When this property is modified, it dispatches the propertyChange event.
Implementation
public function get rowHeight():Number public function set rowHeight(value:Number):voidRelated API Elements
verticalAlign | property |
verticalAlign:String| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Specifies how to align the elements within the cells in the vertical direction.
Supported values are
VerticalAlign.TOP,
VerticalAlign.MIDDLE,
VerticalAlign.BOTTOM,
VerticalAlign.JUSTIFY.
When set to VerticalAlign.JUSTIFY, the height of each
element is set to rowHeight.
The default value is VerticalAlign.JUSTIFY.
Implementation
public function get verticalAlign():String public function set verticalAlign(value:String):voidverticalGap | property |
verticalGap:Number| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Vertical space between rows, in pixels.
The default value is 6.
This property can be used as the source for data binding. When this property is modified, it dispatches the propertyChange event.
Implementation
public function get verticalGap():Number public function set verticalGap(value:Number):voidRelated API Elements
TileLayout | () | Constructor |
public function TileLayout()| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
Constructor.
calculateDropIndex | () | method |
override protected function calculateDropIndex(x:Number, y:Number):int| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
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.
Called by the calculatedDropLocation() method.
Parameters
x:Number — The x coordinate of the drag and drop gesture, in
local coordinates.
| |
y:Number — The y coordinate of the drag and drop gesture, in
the drop target's local coordinates.
|
int — The drop index or -1 if the drop operation is not available
at the specified coordinates.
|
calculateDropIndicatorBounds | () | method |
override protected function calculateDropIndicatorBounds(dropLocation:DropLocation):Rectangle| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4 |
| Runtime Versions: | Flash Player 10, AIR 1.5 |
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.
Called by the showDropIndicator() method.
Parameters
dropLocation:DropLocation — A valid DropLocation object previously returned
by the calculateDropLocation() method.
|
Rectangle — The bounds for the drop indicator or null.
|
Wed Nov 21 2018, 06:34 AM -08:00