Setting the depth on a Spark BitmapImage control in Flex 4

The following example shows how you can reorder a stack of Spark Bitmap controls in Flex 4 by setting the depth property (formerly the layer property).

The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 trial, see www.adobe.com/products/flex/. To download the latest nightly build of the Flex 4 SDK, see opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4.

For more information on getting started with Flex 4 and Flash Builder 4, see the official Adobe Flex Team blog.

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/06/18/setting-the-depth-on-a-spark-bitmapimage-control-in-flex-4/ -->
<s:Application name="Spark_BitmapImage_depth_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
 
        s|Slider {
            liveDragging: true;
        }
    </fx:Style>
 
    <mx:Form styleName="plain">
        <mx:FormItem>
            <s:HSlider id="slider1" minimum="0" maximum="6" />
            <s:HSlider id="slider2" minimum="0" maximum="6" />
            <s:HSlider id="slider3" minimum="0" maximum="6" />
            <s:HSlider id="slider4" minimum="0" maximum="6" />
            <s:HSlider id="slider5" minimum="0" maximum="6" />
            <s:HSlider id="slider6" minimum="0" maximum="6" />
        </mx:FormItem>
    </mx:Form>
 
    <s:Group horizontalCenter="0" verticalCenter="0">
        <s:BitmapImage id="bitmapImg1"
                source="@Embed('assets/cf_appicon-tn.gif')"
                depth="{slider1.value}"
                x="0" y="0" />
        <s:BitmapImage id="bitmapImg2"
                source="@Embed('assets/fl_appicon-tn.gif')"
                depth="{slider2.value}"
                x="10" y="10" />
        <s:BitmapImage id="bitmapImg3"
                source="@Embed('assets/fl_player_appicon-tn.gif')"
                depth="{slider3.value}"
                x="20" y="20" />
        <s:BitmapImage id="bitmapImg4"
                source="@Embed('assets/fw_appicon-tn.gif')"
                depth="{slider4.value}"
                x="30" y="30" />
        <s:BitmapImage id="bitmapImg5"
                source="@Embed('assets/fx_appicon-tn.gif')"
                depth="{slider5.value}"
                x="40" y="40" />
        <s:BitmapImage id="bitmapImg6"
                source="@Embed('assets/lr_appicon-tn.gif')"
                depth="{slider6.value}"
                x="50" y="50" />
    </s:Group>
 
</s:Application>

This entry is based on a beta version of the Flex 4 SDK and therefore is very likely to change as development of the Flex SDK continues. The API can (and will) change causing examples to possibly not compile in newer versions of the Flex 4 SDK.

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