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/
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