Setting the digit case on a Spark NumericStepper control in Flex 4

By Peter deHaan On March 16, 2009 · 2 Comments

The following example shows how you can set the digit case on a Flex 4 Spark NumericStepper control by setting the digitCase style to one of the static constants in the flash.text.engine.DigitCase class.

The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 trial, see http://www.adobe.com/products/flex/. To download the latest nightly build of the Flex 4 SDK, see http://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/2009/03/16/setting-the-digit-case-on-a-fxnumericstepper-control-in-flex-gumbo/ -->
<s:Application name="Spark_NumericStepper_digitCase_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:layout>
        <s:BasicLayout />
    </s:layout>
 
    <fx:Style>
        @font-face {
            src: url("assets/ArnoPro-Regular.otf");
            fontFamily: EmbeddedArnoPro;
            embedAsCFF: true;
        }
    </fx:Style>
 
    <fx:Script>
        <![CDATA[
            private function numericStepper_valueFmtFunc(value:Number):String {
                return value.toFixed(3);
            }
        ]]>
    </fx:Script>
 
    <mx:ApplicationControlBar width="100" cornerRadius="0">
        <mx:Form styleName="plain">
            <mx:FormItem label="digitCase:">
                <s:DropDownList id="dropDownList"
                        requireSelection="true">
                    <s:dataProvider>
                        <s:ArrayList source="[default,lining,oldStyle]" />
                    </s:dataProvider>
                </s:DropDownList>
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>
 
    <s:VGroup horizontalCenter="0"
            verticalCenter="0">
        <s:NumericStepper id="numericStepper"
                minimum="0.000"
                maximum="1.000"
                stepSize="0.001"
                valueFormatFunction="numericStepper_valueFmtFunc"
                fontFamily="EmbeddedArnoPro"
                fontSize="32"
                digitCase="{dropDownList.selectedItem}" />
    </s:VGroup>
 
</s:Application>

View source is enabled in the following example.

You can also set the digitCase 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/2009/03/16/setting-the-digit-case-on-a-fxnumericstepper-control-in-flex-gumbo/ -->
<s:Application name="Spark_NumericStepper_digitCase_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:layout>
        <s:BasicLayout />
    </s:layout>
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
        @namespace mx "library://ns.adobe.com/flex/mx";
 
        @font-face {
            src: url("assets/ArnoPro-Regular.otf");
            fontFamily: EmbeddedArnoPro;
            embedAsCFF: true;
        }
 
        s|NumericStepper {
            fontFamily: EmbeddedArnoPro;
            fontSize: 32;
            digitCase: oldStyle;
        }
    </fx:Style>
 
    <fx:Script>
        <![CDATA[
            private function numericStepper_valueFmtFunc(value:Number):String {
                return value.toFixed(3);
            }
        ]]>
    </fx:Script>
 
    <s:VGroup horizontalCenter="0"
            verticalCenter="0">
        <s:NumericStepper id="numericStepper"
                minimum="0.000"
                maximum="1.000"
                stepSize="0.001"
                valueFormatFunction="numericStepper_valueFmtFunc" />
    </s:VGroup>
 
</s:Application>

You can also set the digitCase style using ActionScript, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/03/16/setting-the-digit-case-on-a-fxnumericstepper-control-in-flex-gumbo/ -->
<s:Application name="Spark_NumericStepper_digitCase_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:layout>
        <s:BasicLayout />
    </s:layout>
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
        @namespace mx "library://ns.adobe.com/flex/halo";
 
        @font-face {
            src: url("assets/ArnoPro-Regular.otf");
            fontFamily: EmbeddedArnoPro;
            embedAsCFF: true;
        }
 
        s|NumericStepper {
            fontFamily: EmbeddedArnoPro;
            fontSize: 32;
        }
    </fx:Style>
 
    <fx:Script>
        <![CDATA[
            import spark.events.IndexChangeEvent;
 
            private function numericStepper_valueFmtFunc(value:Number):String {
                return value.toFixed(3);
            }
 
            protected function dropDownList_changeHandler(evt:IndexChangeEvent):void {
                numericStepper.setStyle("digitCase", dropDownList.selectedItem);
            }
        ]]>
    </fx:Script>
 
    <mx:ApplicationControlBar width="100" cornerRadius="0">
        <mx:Form styleName="plain">
            <mx:FormItem label="digitCase:">
                <s:DropDownList id="dropDownList"
                        requireSelection="true"
                        change="dropDownList_changeHandler(event)">
                    <s:dataProvider>
                        <s:ArrayList source="[default,lining,oldStyle]" />
                    </s:dataProvider>
                </s:DropDownList>
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>
 
    <s:VGroup horizontalCenter="0"
            verticalCenter="0">
        <s:NumericStepper id="numericStepper"
                minimum="0.000"
                maximum="1.000"
                stepSize="0.001"
                valueFormatFunction="numericStepper_valueFmtFunc" />
    </s:VGroup>
 
</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 with: digitCase • Gumbo

About The Author

Peter deHaan

Peter deHaan currently works for Adobe on the Flex SDK QA team. While not working on Flex, Flash, and ColdFusion applications, Peter enjoys making up bios and writing in 3rd person. Peter's rarely updated blog can be found at blogs.adobe.com/pdehaan/, actionscriptexamples.com, airexamples.com, and coldfusionexamples.com.

Visit Authors Website →

Add Widgets (Content Sidebar)

This is your Content Sidebar. Edit this content that appears here in the widgets panel by adding or removing widgets in the Content Sidebar area.