我正在尝试在图表下方显示带有可拖动视口的小地图。我基本上有这个来控制图表的视口:
<mx:annotationElements>
<mx:HDividedBox id="dividedBox" horizontalScrollPolicy="off" width="100%" height="100%" liveDragging="true" borderSides="bottom top">
<mx:Canvas id="leftBox" backgroundColor="#FFFFFF" backgroundAlpha="0.5" width="50%" height="100%" borderColor="#333333" borderThickness="1" borderStyle="solid" borderSides="top right bottom" />
<mx:Canvas id="centerBox" backgroundColor="#FFFFFF" backgroundAlpha="0" width="50%" height="100%" buttonMode="true" minWidth="100" mouseDown="rangeWindowMouseHandler(event);" mouseUp="rangeWindowMouseHandler(event);" mouseMove="rangeWindowMouseHandler(event);" />
<mx:Canvas id="rightBox" backgroundColor="#FFFFFF" backgroundAlpha="0.5" width="0%" height="100%" borderColor="#333333" borderThickness="1" borderStyle="solid" borderSides="top left bottom" />
</mx:HDividedBox>
</mx:annotationElements>
使用以下脚本:
private function rangeWindowMouseHandler(event:MouseEvent):void {
if(event.target === centerBox) {
var coords:Object = rangeDragCoordinates;
switch(event.type.toLowerCase()) {
case 'mousedown':
rangeDrag = true;
break;
case 'mouseup':
rangeDrag = false;
break;
case 'mousemove':
if(rangeDrag) {
var xDiff:Number = -(coords.x - event.stageX) * 4.0;
for(var i:Number = 0; i < dividedBox.numDividers; i++) {
dividedBox.moveDivider(i, xDiff);
}
}
break;
}
coords.x = event.stageX;
coords.y = event.stageY;
}
}
问题是,一次只有一个分隔线实际移动。我发现,如果我在移动下一个分隔线之前设置了大约 50 毫秒的超时,那么两个分隔线都会移动。但是,这似乎是一种相当笨拙的方法,并且容易出错。
任何人都知道是否可以同时移动 HDividedBox 中的两个分隔线,还是我应该采取另一种方法?