Question

我试过这种方式，但它不会在图像上绘制。只有当我试图在右边界（图像外）绘制它才有效。

private var oldX:Number, oldY:Number; 
private var mode:String = "modeBrush";
   private function onMouseDown(e:MouseEvent):void { 
    oldX = e.localX; 
    ldY = e.localY; 
   } 
   private function onMouseMove(e:MouseEvent):void { 
        if (e.buttonDown) { 
       var g:Graphics = currImg.graphics; 
       var mx:Number = e.localX; 
       var my:Number = e.localY;        
           g.lineStyle(10, 0xFFFF00); 
       g.moveTo(oldX, oldY); 
       g.lineTo(mx, my); 
    }   
        oldX = mx; 
    oldY = my;  
} 
//image i'am loading at runtime by button click

 <s:BorderContainer id="everything" borderStyle="solid"  width="900" height="600">
      <s:Scroller left="2" right="2" top="2" bottom="2">
           <s:Group id="group"> 
         <mx:Image id="currImg" mouseMove="onMouseMove(event)" mouseDown="onMouseDown(event)"/>
           </s:Group>
       </s:Scroller>    
     </s:BorderContainer>

更新如果我喜欢这样，一切都很棒！

var line:UIComponent = new UIComponent();
    line.graphics.lineStyle(2, 0x990000, .75);
    line.graphics.beginFill(0x000000);
    line.graphics.moveTo(oldX, oldY);
    line.graphics.lineTo(mx, my);
    currImg.addChild(line);

Answer 1

据我所知，你不能直接在图像上画线，你需要画一个UIComponent。

以下链接可以为您提供帮助：

http://groups.google.com/group/macromedia.flex.flex_builder/browse_thread/thread/bbcfc4e3e0a2e133 http://www.axelscript.com/2008/06/11/drawing-in-flex-using-the-uicomponent/

使用鼠标绘制加载的图像

1 个答案: