Flex Examples » Filters http://blog.flexexamples.com Just a bunch of Adobe Flex Examples Wed, 26 Jan 2011 18:09:51 +0000 en hourly 1 Adding a hover glow filter to an MX Image control in Flex 4 http://blog.flexexamples.com/2010/06/25/adding-a-hover-glow-filter-to-an-mx-image-control-in-flex-4/ http://blog.flexexamples.com/2010/06/25/adding-a-hover-glow-filter-to-an-mx-image-control-in-flex-4/#comments Fri, 25 Jun 2010 23:32:00 +0000 Peter deHaan http://blog.flexexamples.com/?p=3199 The following example shows how you can apply a hover glow filter to an MX Image control in Flex 4 by using the rollOver and rollOut events to set the filters property on the Image control to an array with a GlowFilter instance.

<?xml version="1.0" encoding="utf-8"?> <!-- http://blog.flexexamples.com/2010/06/25/adding-a-hover-glow-filter-to-an-mx-image-control-in-flex-4/ --> <s:Application name="MX_Image_filters_GlowFilter_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" [...]]]> The following example shows how you can apply a hover glow filter to an MX Image control in Flex 4 by using the rollOver and rollOut events to set the filters property on the Image control to an array with a GlowFilter instance.

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/2010/06/25/adding-a-hover-glow-filter-to-an-mx-image-control-in-flex-4/ -->
<s:Application name="MX_Image_filters_GlowFilter_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"
        xmlns:comps="comps.*">
    <s:layout>
        <s:HorizontalLayout horizontalAlign="center" verticalAlign="middle" />
    </s:layout>
 
    <fx:Script>
        <![CDATA[
            import flash.filters.GlowFilter;
 
            protected function img_rollOverHandler(evt:MouseEvent):void {
                Image(evt.currentTarget).filters = [new GlowFilter(0xFF0000)];
            }
 
            protected function img1_rollOutHandler(evt:MouseEvent):void {
                Image(evt.currentTarget).filters = [];
            }
        ]]>
    </fx:Script>
 
    <mx:Image id="img1"
            source="http://helpexamples.com/flash/images/image1.jpg"
            rollOver="img_rollOverHandler(event);"
            rollOut="img1_rollOutHandler(event);" />
 
</s:Application>

View source is enabled in the following example.


Or, instead of specifying the rollOver and rollOut event handlers for each Image component instance, you could create a custom component that extends the MX Image control and adds the rollOver/rollOut logic, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2010/06/25/adding-a-hover-glow-filter-to-an-mx-image-control-in-flex-4/ -->
<s:Application name="MX_Image_filters_GlowFilter_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"
        xmlns:comps="comps.*">
    <s:layout>
        <s:HorizontalLayout horizontalAlign="center" verticalAlign="middle" />
    </s:layout>
 
    <comps:GlowImage id="img2"
            source="http://helpexamples.com/flash/images/image2.jpg"
            scaleX="0.5" scaleY="0.5" />
 
    <comps:GlowImage id="img3"
            source="http://helpexamples.com/flash/images/image3.jpg"
            scaleX="0.5" scaleY="0.5" />
 
</s:Application>

And the custom MX Image control, comps/GlowImage.mxml, is as follows:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2010/06/25/adding-a-hover-glow-filter-to-an-mx-image-control-in-flex-4/ -->
<mx:Image name="GlowImage"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx"
        rollOver="rollOverHandler(event);"
        rollOut="rollOutHandler(event);">
 
    <fx:Script>
        <![CDATA[
            import flash.filters.GlowFilter;
 
            protected function rollOverHandler(evt:MouseEvent):void {
                filters = [new GlowFilter(0xFF0000)];
            }
 
            protected function rollOutHandler(evt:MouseEvent):void {
                filters = [];
            }
        ]]>
    </fx:Script>
 
</mx:Image>

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.

 
]]> http://blog.flexexamples.com/2010/06/25/adding-a-hover-glow-filter-to-an-mx-image-control-in-flex-4/feed/ 7 Removing the drop shadow from a Flex PieChart control http://blog.flexexamples.com/2007/11/05/removing-the-drop-shadow-from-a-flex-piechart-control/ http://blog.flexexamples.com/2007/11/05/removing-the-drop-shadow-from-a-flex-piechart-control/#comments Tue, 06 Nov 2007 06:31:38 +0000 Peter deHaan http://blog.flexexamples.com/2007/11/05/removing-the-drop-shadow-from-a-flex-piechart-control/ The following example shows how you can remove the default drop shadow from a Flex PieChart control by setting the filters property to an empty array in the PieSeries tag, as seen in the following snippet:

<mx:PieChart id="pieChart" dataProvider="{dp.product}" height="250" width="100%"> <mx:series> <mx:PieSeries id="pieSeries" field="@data" filters="[]" /> </mx:series> </mx:PieChart>

Full code after the jump.

[...]]]> The following example shows how you can remove the default drop shadow from a Flex PieChart control by setting the filters property to an empty array in the PieSeries tag, as seen in the following snippet:

<mx:PieChart id="pieChart"
        dataProvider="{dp.product}"
        height="250"
        width="100%">
    <mx:series>
        <mx:PieSeries id="pieSeries"
                field="@data"
                filters="[]" />
    </mx:series>
</mx:PieChart>

Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/11/05/removing-the-drop-shadow-from-a-flex-piechart-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white"
        creationComplete="init();">
 
    <mx:Script>
        <![CDATA[
            import mx.controls.Button;
 
            private var defaultFilters:Array;
 
            private function init():void {
                defaultFilters = pieSeries.filters;
            }
 
            private function toggleFilters(evt:Event):void {
                if (Button(evt.currentTarget).selected) {
                    pieSeries.filters = [];
                } else {
                    pieSeries.filters = defaultFilters;
                }
            }
        ]]>
    </mx:Script>
 
    <mx:XML id="dp">
        <products>
            <product label="Product 1" data="3" />
            <product label="Product 2" data="1" />
            <product label="Product 3" data="4" />
            <product label="Product 4" data="1" />
            <product label="Product 5" data="5" />
            <product label="Product 6" data="9" />
        </products>
    </mx:XML>
 
    <mx:ApplicationControlBar dock="true">
        <mx:Button label="Toggle filters"
                toggle="true"
                change="toggleFilters(event);" />
    </mx:ApplicationControlBar>
 
    <mx:PieChart id="pieChart"
            dataProvider="{dp.product}"
            height="250"
            width="100%">
        <mx:series>
            <mx:PieSeries id="pieSeries"
                    field="@data" />
        </mx:series>
    </mx:PieChart>
 
</mx:Application>

View source is enabled in the following example.

 
]]> http://blog.flexexamples.com/2007/11/05/removing-the-drop-shadow-from-a-flex-piechart-control/feed/ 10