Creating a Spark Button control with a vertical label in Flex 4

The following example shows how you can create a vertical label on a Spark Button control in Flex 4 by creating a custom skin and setting the breakOpportunity and textRotation styles.

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 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/2009/08/29/creating-a-spark-button-control-with-a-vertical-label-in-flex-4/ -->
<s:Application name="Spark_Button_textRotation_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:Button id="btn"
            label="Spark Button"
            skinClass="skins.CustomButtonSkin"
            horizontalCenter="0" verticalCenter="0" />
 
</s:Application>

And the custom Spark Button skin class, skins/CustomButtonSkin.mxml, is as follows:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/08/29/creating-a-spark-button-control-with-a-vertical-label-in-flex-4/ -->
<s:SparkSkin name="CustomButtonSkin"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        minWidth="21" minHeight="21"
        alpha.disabled="0.5">
    <!-- states -->
    <s:states>
        <s:State name="up" />
        <s:State name="over" />
        <s:State name="down" />
        <s:State name="disabled" />
    </s:states>
 
    <!-- host component -->
    <fx:Metadata>
        [HostComponent("spark.components.Button")]
    </fx:Metadata>
 
    <fx:Script>
        <![CDATA[
            /* Define the skin elements that should not be colorized. For button, the graphics are colorized but the label is not. */
            static private const exclusions:Array = ["labelDisplay"];
 
            override public function get colorizeExclusions():Array {
                return exclusions;
            }
        ]]>
    </fx:Script>
 
    <!-- layer 1: shadow -->
    <s:Rect left="-1" right="-1" top="-1" bottom="-1"
            radiusX="2" radiusY="2">
        <s:fill>
            <s:LinearGradient rotation="90">
                    <s:GradientEntry color="0x000000"
                            color.down="0xFFFFFF"
                            alpha="0.01"
                            alpha.down="0" />
                    <s:GradientEntry color="0x000000"
                            color.down="0xFFFFFF"
                            alpha="0.07"
                            alpha.down="0.5" />
            </s:LinearGradient>
        </s:fill>
    </s:Rect>
 
    <!-- layer 2: fill -->
    <s:Rect left="1" right="1" top="1" bottom="1"
            radiusX="2" radiusY="2">
        <s:fill>
            <s:LinearGradient rotation="90">
                <s:GradientEntry color="0xFFFFFF"
                        color.over="0xBBBDBD"
                        color.down="0xAAAAAA"
                        alpha="0.85" />
                <s:GradientEntry color="0xD8D8D8"
                        color.over="0x9FA0A1"
                        color.down="0x929496"
                        alpha="0.85" />
            </s:LinearGradient>
        </s:fill>
    </s:Rect>
 
    <!-- layer 3: fill lowlight -->
    <s:Rect left="1" right="1" bottom="1" height="9"
            radiusX="2" radiusY="2">
        <s:fill>
            <s:LinearGradient rotation="90">
                <s:GradientEntry color="0x000000" alpha="0.0099" />
                <s:GradientEntry color="0x000000" alpha="0.0627" />
            </s:LinearGradient>
        </s:fill>
    </s:Rect>
 
    <!-- layer 4: fill highlight -->
    <s:Rect left="1" right="1" top="1" height="9"
            radiusX="2" radiusY="2">
        <s:fill>
            <s:SolidColor color="0xFFFFFF"
                    alpha="0.33"
                    alpha.over="0.22"
                    alpha.down="0.12" />
        </s:fill>
    </s:Rect>
 
    <!-- layer 5: highlight stroke (all states except down) -->
    <s:Rect left="1" right="1" top="1" bottom="1"
            radiusX="2" radiusY="2"
            excludeFrom="down">
        <s:stroke>
            <s:LinearGradientStroke rotation="90" weight="1">
                <s:GradientEntry color="0xFFFFFF" alpha.over="0.22" />
                <s:GradientEntry color="0xD8D8D8" alpha.over="0.22" />
            </s:LinearGradientStroke>
        </s:stroke>
    </s:Rect>
 
    <!-- layer 6: highlight stroke (down state only) -->
    <s:Rect left="1" top="1" bottom="1" width="1"
            includeIn="down">
        <s:fill>
            <s:SolidColor color="0x000000" alpha="0.07" />
        </s:fill>
    </s:Rect>
    <s:Rect right="1" top="1" bottom="1" width="1"
            includeIn="down">
        <s:fill>
            <s:SolidColor color="0x000000" alpha="0.07" />
        </s:fill>
    </s:Rect>
    <s:Rect left="2" top="1" right="2" height="1"
            includeIn="down">
        <s:fill>
            <s:SolidColor color="0x000000" alpha="0.25" />
        </s:fill>
    </s:Rect>
    <s:Rect left="1" top="2" right="1" height="1"
            includeIn="down">
        <s:fill>
            <s:SolidColor color="0x000000" alpha="0.09" />
        </s:fill>
    </s:Rect>
 
    <!-- layer 7: border - put on top of the fill so it doesn't disappear when scale is less than 1 -->
    <s:Rect left="0" right="0" top="0" bottom="0"
            width="69" height="20"
            radiusX="2" radiusY="2">
        <s:stroke>
            <s:LinearGradientStroke rotation="90" weight="1">
                <s:GradientEntry color="0x000000"
                        alpha="0.5625"
                        alpha.down="0.6375" />
                <s:GradientEntry color="0x000000"
                        alpha="0.75"
                        alpha.down="0.85" />
            </s:LinearGradientStroke>
        </s:stroke>
    </s:Rect>
 
    <!-- layer 8: text -->
    <s:RichText id="labelDisplay"
            breakOpportunity="all"
            textRotation="rotate90"
            textAlign="center"
            verticalAlign="middle"
            horizontalCenter="0" verticalCenter="1"
            left="10" right="10" top="2" bottom="2" />
 
</s:SparkSkin>

View source is enabled in the following example.

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.

5 thoughts on “Creating a Spark Button control with a vertical label in Flex 4

  1. Thank you for this sample,
    Though, title is misleading:
    it’s not really a “vertical” text, but more a “rotated” text.

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