Flex Examples » bitmapData http://blog.flexexamples.com Just a bunch of Adobe Flex Examples Wed, 26 Jan 2011 18:09:51 +0000 en hourly 1 Duplicating images using the Bitmap and BitmapData classes http://blog.flexexamples.com/2007/08/03/duplicating-images-using-the-bitmap-and-bitmapdata-classes/ http://blog.flexexamples.com/2007/08/03/duplicating-images-using-the-bitmap-and-bitmapdata-classes/#comments Sat, 04 Aug 2007 04:04:28 +0000 Peter deHaan http://blog.flexexamples.com/2007/08/03/duplicating-images-using-the-bitmap-and-bitmapdata-classes/ In a previous post (Finding a pixel’s color value using the Bitmap classes and getPixel()) we looked at copying an image so we could build a simple color-picker like app. In this post, we explore duplicating a loaded image and copying it into a TileList control. Each time you press the “Copy image” button, [...]]]> In a previous post (Finding a pixel’s color value using the Bitmap classes and getPixel()) we looked at copying an image so we could build a simple color-picker like app. In this post, we explore duplicating a loaded image and copying it into a TileList control. Each time you press the “Copy image” button, a new instance of the source image is created and added to the TileList control’s data provider.

As an added bonus, we also create a custom item renderer consisting of an HBox container, Image control, and a Label control.

Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/08/03/duplicating-images-using-the-bitmap-and-bitmapdata-classes/ -->
<mx:Application name="Image_content_test"
        xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">
 
    <mx:Script>
        <![CDATA[
            import mx.collections.ArrayCollection;
 
            [Bindable]
            private var arrColl:ArrayCollection = new ArrayCollection();
 
            private function dupeImage(source:Image):void {
                var data:BitmapData = Bitmap(source.content).bitmapData;
                var bitmap:Bitmap = new Bitmap(data);
 
                arrColl.addItem({image:bitmap, label:"item #" + (arrColl.length + 1)});
            }
        ]]>
    </mx:Script>
 
    <mx:HBox>
        <mx:Panel title="Source image">
            <mx:HBox verticalAlign="middle" horizontalAlign="center" width="100%" height="100%">
                <mx:Image id="img1" source="assets/logo.png" />
            </mx:HBox>
 
            <mx:ControlBar>
                <mx:Button label="Copy image" click="dupeImage(img1)" />
            </mx:ControlBar>
        </mx:Panel>
 
        <mx:TileList id="tileList" dataProvider="{arrColl}" width="300" height="200" columnCount="4" verticalScrollPolicy="on">
            <mx:itemRenderer>
                <mx:Component>
                    <mx:VBox>
                        <mx:Image source="{data.image}" />
                        <mx:Label text="{data.label}" />
                    </mx:VBox>
                </mx:Component>
            </mx:itemRenderer>
        </mx:TileList>
    </mx:HBox>
 
</mx:Application>

View source is enabled in the following example.

 
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