package cwmlab.controls { import mx.controls.*; import flash.display.Shape; import mx.core.FlexShape; import flash.display.Graphics; import flash.display.Sprite; import mx.rpc.events.AbstractEvent; import mx.collections.ArrayCollection; import flash.events.Event; /** * This is an extended version of the built-in Flex datagrid. * This extended version has the correct override logic in it * to draw the background color of the cells, based on the value of the * data in the row. **/
public class CustomRowColorDataGrid extends DataGrid { private var _rowColorFunction:Function; public function CustomRowColorDataGrid() { super(); } /** * A user-defined function that will return the correct color of the * row. Usually based on the row data. * * expected function signature: * public function F(item:Object, defaultColor:uint):uint **/
public function set rowColorFunction(f:Function):void { this._rowColorFunction = f; }
public function get rowColorFunction():Function { return this._rowColorFunction; }
/** * Draws a row background * at the position and height specified using the * color specified. This implementation creates a Shape as a * child of the input Sprite and fills it with the appropriate color. * This method also uses the <code>backgroundAlpha</code> style property * setting to determine the transparency of the background color. * * @param s A Sprite that will contain a display object * that contains the graphics for that row. * * @param rowIndex The row's index in the set of displayed rows. The * header does not count, the top most visible row has a row index of 0. * This is used to keep track of the objects used for drawing * backgrounds so a particular row can re-use the same display object * even though the index of the item that row is rendering has changed. * * @param y The suggested y position for the background * @param height The suggested height for the indicator * @param color The suggested color for the indicator * * @param dataIndex The index of the item for that row in the * data provider. This can be used to color the 10th item differently * for example. */
override protected function drawRowBackground(s:Sprite,rowIndex:int,y:Number, height:Number, color:uint, dataIndex:int):void { if( this.rowColorFunction != null ){ if( dataIndex < this.dataProvider.length ){ var item:Object = this.dataProvider.getItemAt(dataIndex); color = this.rowColorFunction.call(this, item, color); } } super.drawRowBackground(s, rowIndex, y, height, color, dataIndex); } } }
<mx:DataGridColumn headerText="Make" dataField="col1"> <mx:itemRenderer> <mx:Component> <mx:Label> <!--using label as itemRenderer--> <mx:Script><![CDATA[ override public function set data(value:Object):void { super.data = value; if(value.col1 == 'Toyota'){ this.opaqueBackground =0xCC0000; } } ]]></mx:Script> </mx:Label> </mx:Component> </mx:itemRenderer> </mx:DataGridColumn>
用DataGridItemRenderer进行背景色设置如下：
<mx:DataGridColumn headerText="Year" dataField="col3"> <mx:itemRenderer> <mx:Component> <mx:DataGridItemRenderer><!--using DataGridItemRenderer as itemRenderer--> <mx:Script><![CDATA[ override public function set data(value:Object):void { super.data = value; if(value.col3 >= 2000){ this.background = true; this.backgroundColor =0x00cc00; } } ]]></mx:Script> </mx:DataGridItemRenderer> </mx:Component> </mx:itemRenderer> </mx:DataGridColumn>]]>http://www.aeroflash.org/default.asp?id=67<![CDATA[Flash Player 9更新了]]>Dorothyhttp://www.aeroflash.org/www@aeroflash.org2008-04-10T13:42:53+08:002008-04-10T13:42:53+08:00 看了老半天，没敢更新。这几天正因为不同版本的播放器和浏览器的问题烦着呢。
先看看再说。
记个更新地址，从Danger的blog上抄来的。
在线更新 | For IE | For FF | 卸载工具]]>http://www.aeroflash.org/default.asp?id=66<![CDATA[有关BitmapData的安全性问题]]>Dorothyhttp://www.aeroflash.org/www@aeroflash.org2008-03-21T16:44:46+08:002008-03-21T16:44:46+08:00 前些天做了些有关BitmapData的工作，遇到几个问题，解决是解决了，折腾了偶一头包。
1. Have the loaded images on the same server as the SWF; 2. Have a server proxy script on the SWF server that loads the images from the remote server and passes them to the SWF (so the SWF only "loads" from the original server); 3. Have a proxy SWF on the remote server that loads the images, grabs the data, then passes it to the original SWF. This SWF needs to set .allowDomain to the original server so it can use the data. 4. Use AS3 (Flash 9), as this has been fixed under the new VM.原文地址
Flash动画
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