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在画布中拟合柔性图像

actionscript-3 flex

0

Daniel A. White · 技术社区 · 15 年前

如何在flex中缩放图像以适合画布?我的代码如下:

<?xml version="1.0" encoding="utf-8"?>
<mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml"
         horizontalAlign="center"
         width="100" height="100"
         verticalGap="0" borderStyle="solid"
         initialize="onLoad()"
         horizontalScrollPolicy="off"
         verticalScrollPolicy="off">
    <mx:Canvas width="100%" height="100%" id="PictureBox" horizontalScrollPolicy="off"
         verticalScrollPolicy="off" />
    <mx:Label id="NameLabel" height="20%" width="100%"/>
    <mx:Script>
        <![CDATA[
        private function onLoad():void
        {
            var image:SmoothImage = data.thumbnail;

            image.percentHeight = 100;
            image.percentWidth = 100;
            this.PictureBox.addChild(image);

            var sizeString:String = new String();

            if ((data.fr.size / 1024) >= 512)
                sizeString = "" + int((data.fr.size / 1024 / 1024) * 100)/100 + " MB";
            else
                sizeString = "" + int((data.fr.size / 1024) * 100)/100 + " KB";

            this.NameLabel.text = data.name + " \n" + sizeString;

        }
        ]]>
        </mx:Script>
</mx:VBox>

我正在尝试获取图像:将图像平滑到PictureBox中,并将其缩小。

注释 SmoothImage源自图像。

1 回复 | 直到 15 年前

1

6

James Hay 15 年前

你得确定你已经准备好了

image.scaleContent = true;
image.maintainAspectRatio = false;

这应该将内容缩放到SWF加载程序的大小,并使其变形,从而填充图像组件的整个区域。

这是它的一个快速版本

     <mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml"
         horizontalAlign="center"
         width="100" height="100"
         verticalGap="0" borderStyle="solid"
         initialize="onLoad()"
         horizontalScrollPolicy="off"
         verticalScrollPolicy="off">
    <mx:Canvas width="100%" height="100%" id="PictureBox" horizontalScrollPolicy="off"
         verticalScrollPolicy="off" />
    <mx:Label id="NameLabel" height="20%" width="100%"/>
    <mx:Script>
        <![CDATA[
            import mx.controls.Image;

        private function onLoad():void
        {
            var image : Image = new Image()
            image.source = "http://i.stackoverflow.com/Content/Img/stackoverflow-logo-250.png";
            image.scaleContent = true;
            image.maintainAspectRatio =false;
            image.percentWidth = 100;
            image.percentHeight = 100;

            PictureBox.addChild(image);

        }
        ]]>
    </mx:Script>
</mx:VBox>