有人知道如何在Flex 4(Spark)中制作带有两个拇指的自定义hslider吗?由于Flex 4中滑块组件的thumbcount属性不再可用(在mx组件中很容易设置),我必须样式化轨道和拇指。
教程将是不错的选择。
谢谢, tux。
有人知道如何在Flex 4(Spark)中制作带有两个拇指的自定义hslider吗?由于Flex 4中滑块组件的thumbcount属性不再可用(在mx组件中很容易设置),我必须样式化轨道和拇指。
教程将是不错的选择。
谢谢, tux。
我没有完整的教程,但以下是创建自定义hslider组件的前几个步骤。希望能帮到您。
首先看一下hslider皮肤,它由两个部分组成:滑块(thumb)和轨道(track):
<s:Button id="track" left="0" right="0" top="0" bottom="0" minWidth="33" width="100"
skinClass="spark.skins.spark.HSliderTrackSkin" />
<s:Button id="thumb" top="0" bottom="0" width="11" height="11"
skinClass="spark.skins.spark.HSliderThumbSkin" />
<s:Button id="track" left="0" right="0" top="0" bottom="0" minWidth="33" width="100"
skinClass="spark.skins.spark.HSliderTrackSkin" />
<s:Button id="thumb" top="0" bottom="0" width="11" height="11"
skinClass="spark.skins.spark.HSliderThumbSkin" />
<s:Button id="thumb2" top="0" bottom="0" width="11" height="11"
skinClass="spark.skins.spark.HSliderThumbSkin" />
override protected function partAdded(partName:String, instance:Object):void{
if(partName == "thumb2"){
thumb2 = instance as Button;
}
}
我也遇到了同样的问题。目前我正在使用mx组件而不是sparks组件。
<mx:HSlider x="46" y="358" minimum="1" maximum="600" snapInterval="1"
thumbCount="2" values="[1,600]" id="hsTiming" height="23" width="618"
change="hsTiming_changeHandler(event)"/>
package test.components
{
import flash.geom.Point;
import spark.components.Button;
import spark.components.Group;
import spark.components.HSlider;
public class HSliderTwoThumbs extends HSlider
{
private var _value2:Number;
[Bindable]
public function get value2():Number
{
return _value2;
}
public function set value2(value:Number):void
{
_value2=value;
invalidateDisplayList();
}
[SkinPart(required="true")]
public var thumb2:Button;
public function HSliderTwoThumbs()
{
super();
//this.setStyle("skinClass", "HRangeSliderSkin");
}
override protected function partAdded(partName:String, instance:Object):void
{
super.partAdded(partName, instance);
}
override protected function updateSkinDisplayList():void
{
super.updateSkinDisplayList();
if (!thumb2 || !track || !rangeDisplay)
return;
var thumbRange:Number=track.getLayoutBoundsWidth() - thumb2.getLayoutBoundsWidth();
var range:Number=maximum - minimum;
// calculate new thumb position.
var thumbPosTrackX:Number=(range > 0) ? ((value2 - minimum) / range) * thumbRange : 0;
// convert to parent's coordinates.
var thumbPos:Point=track.localToGlobal(new Point(thumbPosTrackX, 0));
var thumbPosParentX:Number=thumb2.parent.globalToLocal(thumbPos).x; //- distanceToSecondThumb
thumb2.setLayoutBoundsPosition(Math.round(thumbPosParentX), thumb2.getLayoutBoundsY());
}
}}
以下是如何使用它的方法:
<components:HSliderTwoThumbs id="sliderTwoThumbs" skinClass="test.skins.HRangeSliderSkin"
width="300"
minimum="0"
maximum="300"
value="150"
value2="100"
/>