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

by Peter deHaan on March 16, 2009

in NumericStepper (Spark), beta1

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.

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/2009/03/16/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/halo">
    <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>

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/halo">
    <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;
            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/halo">
    <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.

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