本文介绍了用鼠标在加载的图像上绘制的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我尝试过这种方式,但它不会在图像上绘制.只有当我尝试在右边框(图像外)上绘制时,它才能工作.

I tried this way, but it doesn't draw on the image. Only if I tries to draw on right border (outside the image) it working.

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>

更新如果我喜欢这个,一切都很好!

UPDATEIf I do like this, everything works great!

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);

推荐答案

我知道你不能直接在图像上画线,你需要在 UIComponent 上画线.

As I know you cannot draw line directly on a image, you need to draw on a UIComponent.

以下链接可能对您有所帮助:

The following link may help you:

http://groups.google.com/group/macromedia.flex.flex_builder/browse_thread/thread/bbcfc4e3e0a2e133http://www.axelscript.com/2008/06/11/drawing-in-flex-using-the-uicomponent/

这篇关于用鼠标在加载的图像上绘制的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

09-05 15:21
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