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).

Full code after the jump.

The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 beta, check out the Adobe Flash Builder 4 page on the Adobe Labs site. To download the latest build of the Flex 4 SDK, see http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4. For instructions on using the beta Flex 4 SDK in Flex Builder 3, see "Using the beta Flex 4 SDK in Flex Builder 3".

<?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/halo">

    <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.

Tagged as: depth, Gumbo