Setting the chrome color on the Spark HSlider control in Flex 4

The following example shows how you can style the base color on the Spark HSlider control’s thumb and track in Flex 4 by setting the chromeColor style.

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/2009/03/12/setting-the-base-color-on-the-fxhslider-control-in-flex-gumbo/ -->
<s:Application name="Spark_HSlider_chromeColor_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">
    <s:controlBarContent>
        <mx:Form>
            <mx:FormItem label="chromeColor:">
                <mx:ColorPicker id="clrPckr" selectedColor="red" />
            </mx:FormItem>
        </mx:Form>
    </s:controlBarContent>
 
    <s:HSlider id="slider"
            chromeColor="{clrPckr.selectedColor}"
            horizontalCenter="0" verticalCenter="0"/>
 
</s:Application>

You can also set the chromeColor style in an external .CSS file or <Style/> block, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/03/12/setting-the-base-color-on-the-fxhslider-control-in-flex-gumbo/ -->
<s:Application name="Spark_HSlider_chromeColor_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|HSlider {
            chromeColor: haloOrange;
        }
    </fx:Style>
 
    <s:HSlider id="slider"
            horizontalCenter="0" verticalCenter="0"/>
 
</s:Application>

Or, you can set the chromeColor style using ActionScript, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/03/12/setting-the-base-color-on-the-fxhslider-control-in-flex-gumbo/ -->
<s:Application name="Spark_HSlider_chromeColor_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">
    <s:controlBarContent>
        <mx:Form>
            <mx:FormItem label="chromeColor:">
                <mx:ColorPicker id="clrPckr"
                        selectedColor="red"
                        change="clrPckr_changeHandler(event);"/>
            </mx:FormItem>
        </mx:Form>
    </s:controlBarContent>
 
    <fx:Script>
        <![CDATA[
            import mx.events.ColorPickerEvent;
 
            protected function clrPckr_changeHandler(evt:ColorPickerEvent):void {
                slider.setStyle("chromeColor", evt.color);
            }
        ]]>
    </fx:Script>
 
    <s:HSlider id="slider"
            horizontalCenter="0" verticalCenter="0"/>
 
</s:Application>

Finally, if you wanted to set the chromeColor style on the Spark HSlider thumb and/or track individually, you could either create a custom Spark HSlider skin and set the chromeColor styles in the new skin, or you could style the #thumb and/or #track selectors directly, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/03/12/setting-the-base-color-on-the-fxhslider-control-in-flex-gumbo/ -->
<s:Application name="Spark_HSlider_chromeColor_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|HSlider #thumb {
            chromeColor: haloBlue;
        }
 
        s|HSlider #track {
            chromeColor: haloGreen;
        }
    </fx:Style>
 
    <s:HSlider id="slider"
            horizontalCenter="0" verticalCenter="0"/>
 
</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.