Question

我很快就会需要一顶假发来替换我为此问题而撕掉的头发！我的网站上有一个flash元素，它是一个XML库。它应该与背景无缝融合。我导入了一个具有透明度的PNG，其中一条边是与另一条BG的混合边。当然，Mac和Windows都有颜色变化。我尝试导入PSD，保存为JPG，使用GammaSlamma删除分析，各种各样的东西。

我认为我将不得不手动调整图像以匹配，然后根据用户的操作系统或类似的东西提供两个不同的Flash文件，但后来我看到AS3支持色彩校正，很多人都有似乎觉得它很有用。毋庸置疑，我非常兴奋但是，我以前从未使用过AS3，并且正在开发一个令人头痛的问题。

我发现了一个替代免费幻灯片，它是AS3，但我不知道在哪里添加此代码。

根据http://kelsocartography.com/blog/?tag=as3-color-correction提供的代码就是所需要的：

stage.colorCorrection = ColorCorrection.ON;

图库的代码（抱歉这么长的代码段）：

    //----------------------------------------------------------------------------------------------------
//  XMLSlideshow.as 
//  19 Feb 2009
//  www.simplistika.com
//----------------------------------------------------------------------------------------------------
package com.simplistika
{
import flash.display.*;
import flash.events.*;
import flash.net.URLRequest;
import flash.utils.Timer;

//Color correction
import flash.display.ColorCorrection;
stage.colorCorrection = ColorCorrection.ON;

//----------------------------------------------------------------------------------------------------
//  class definition
//----------------------------------------------------------------------------------------------------
public class XMLSlideshow extends cXMLApp 
{
//----------------------------------------------------------------------------------------------------
//  member data
//----------------------------------------------------------------------------------------------------
private var mTimer : Timer;
private var mPlaceholder1 : Loader = new Loader();
private var mPlaceholder2 : Loader = new Loader();
private var mControl : mcControl = new mcControl();
private var mSlide : int;

//----------------------------------------------------------------------------------------------------
//  slideshow setup
//----------------------------------------------------------------------------------------------------
private var mFile : String = "http://www.simplistika.com/files/ssp/Slideshow.xml";      // path to xml file
private var mInterval : uint = 8000;                                                    // slide interval

//----------------------------------------------------------------------------------------------------
//  constructor
//----------------------------------------------------------------------------------------------------
public function 
XMLSlideshow(   
) : void
{       
    trace(this + " " + "XMLSlideshow.constructor");
    mTimer = new Timer(mInterval, 0);

    mPlaceholder1.contentLoaderInfo.addEventListener(Event.OPEN, fOpen);
    mPlaceholder1.contentLoaderInfo.addEventListener(Event.COMPLETE, fResult);
    mPlaceholder2.contentLoaderInfo.addEventListener(Event.OPEN, fOpen);
    mPlaceholder2.contentLoaderInfo.addEventListener(Event.COMPLETE, fResult);

    //this.addEventListener(MouseEvent.MOUSE_OVER, fOnMouseOver);
    //this.addEventListener(MouseEvent.MOUSE_OUT, fOnMouseOut);
    //this.addEventListener(MouseEvent.CLICK, fOnClick);
    mTimer.addEventListener(TimerEvent.TIMER, fTimer);

    addChild(mPlaceholder1);
    addChild(mPlaceholder2);
    addChild(mControl);

    mSlide = 0;
    mControl.btnForward.alpha = mControl.btnBack.alpha = mControl.btnPause.alpha = 0.0;
    //mControl.btnForward.buttonMode = mControl.btnBack.buttonMode = mControl.btnPause.buttonMode = true;
    mControl.btnForward.visible = mControl.btnBack.visible = false;

    super(mFile);   
    super.addEventListener("XMLLoaded", fStart);
}

//----------------------------------------------------------------------------------------------------
//  fStart
//----------------------------------------------------------------------------------------------------
private function 
fStart(
    e : Event
) : void
{
    trace(this + " " + "XMLSlideshow.fStart");

    fLoadImage();
}

//----------------------------------------------------------------------------------------------------
//  fOnMouseOver
//----------------------------------------------------------------------------------------------------
/* private function 
fOnMouseOver(
e : MouseEvent
) : void 
{   

    switch (e.target.name)
    {
    case "btnPause":
        mTimer.running ? mControl.txtDesc.text = "Pause" : mControl.txtDesc.text = "Play";
        break;      
    case "btnForward":
        mControl.txtDesc.text = "Next";
        break;      
    case "btnBack":
        mControl.txtDesc.text = "Back";     
        break;  
    default:
        return;
    }
    mControl.txtDesc.alpha = 1;
    e.target.alpha = 0.7;
}

//----------------------------------------------------------------------------------------------------
//  fOnMouseOut
//----------------------------------------------------------------------------------------------------
private function 
fOnMouseOut(
e : MouseEvent
) : void 
{
    switch (e.target.name)
    {
    case "btnPause":
    case "btnForward":
    case "btnBack":
        e.target.alpha = 0.5;
        mControl.txtDesc.alpha = 0;
        return;
    }
}

//----------------------------------------------------------------------------------------------------
//  fOnClick
//----------------------------------------------------------------------------------------------------
private function 
fOnClick(
    e : MouseEvent
) : void 
{
    trace(this + " " + "XMLSlideshow.fOnClick " + e.target.name);

    switch (e.target.name)
    {
    case "btnPause":
        if (mControl.txtDesc.text == "Pause") 
        {
            mTimer.stop();
            mControl.btnBack.visible = mControl.btnForward.visible = true;
            mControl.txtDesc.text = "Play";
        } 
        else 
        {
            mTimer.start();
            mControl.btnBack.visible = mControl.btnForward.visible = false;
            mControl.txtDesc.text = "Pause";
        }
        return;
    case "btnForward":
        mSlide == mItems - 1 ? mSlide = 0 : mSlide++;
        break;
    case "btnBack":
        mSlide == 0 ? mSlide = mItems - 1 : mSlide--;
        break;
    default:
        return;
    }       
    fLoadImage();
} */

//----------------------------------------------------------------------------------------------------
//  fLoadImage
//----------------------------------------------------------------------------------------------------
private function 
fLoadImage(
) : void
{
    getChildIndex(mPlaceholder1) != 0 ?
        mPlaceholder2.load(new URLRequest(mData.slide[mSlide].url)) : 
            mPlaceholder1.load(new URLRequest(mData.slide[mSlide].url));
}

//----------------------------------------------------------------------------------------------------
//  fTimer
//----------------------------------------------------------------------------------------------------
private function 
fTimer(
    e : TimerEvent
) : void
{
    mSlide == mItems - 1 ? mSlide = 0 : mSlide++;
    fLoadImage();
}

//----------------------------------------------------------------------------------------------------
//  fOpen
//----------------------------------------------------------------------------------------------------
private function 
fOpen(
    e : Event
) : void 
{
    mTimer.stop();
}

//----------------------------------------------------------------------------------------------------
//  fResult
//----------------------------------------------------------------------------------------------------
private function 
fResult(
    e : Event
) : void
{
    if (!mControl.btnForward.visible)
        mTimer.start();

    getChildIndex(mPlaceholder1) == 0 ? fNextImage(mPlaceholder1) : fNextImage(mPlaceholder2);
}

//----------------------------------------------------------------------------------------------------
//  fKenBurns
//----------------------------------------------------------------------------------------------------
private function 
fNextImage(
    vPlaceholder : Loader
) : void
{
    setChildIndex(vPlaceholder, this.numChildren - 2);
    vPlaceholder.alpha = 0;
    vPlaceholder == mPlaceholder1 ? cTween.to(mPlaceholder2, {alpha:0}, 1) : cTween.to(mPlaceholder1, {alpha:0}, 1);
    cTween.to(vPlaceholder, { alpha:1 }, 1);
}

//----------------------------------------------------------------------------------------------------
}   // class

//----------------------------------------------------------------------------------------------------
}   // package

您可以看到我在其中添加了“颜色校正”，但在运行文件时出现此错误：

ReferenceError: Error #1065: Variable stage is not defined.
at global$init()

有什么建议吗？谢谢....

Answer 1

这是因为尚未定义/创建舞台。所以这里有两个选项：

使用ADDED_TO_STAGE侦听器等待添加幻灯片到了舞台。所以你要添加跟随构造函数：
```
addEventListener(Event.ADDED_TO_STAGE,
```
_added）; 并将此函数添加到类：
```
private _added function(e:Event)
{
  removeEventListener(Event.ADDED_TO_STAGE,
```
_added）; stage.colorCorrection = ColorCorrection.ON; }

制作一个文件课（见 http://goo.gl/b92SU啧啧这些对你的闪光灯如此：

package
{
  import flash.display.MovieClip;

  public class Main extends MovieClip
  {
    function Main()
    {
      addEventListener(Event.ADDED_TO_STAGE, _added);
      //other code that was in your main timeline
    }

    private function _added(e:Event):void
    {
      removeEventListener(Event.ADDED_TO_STAGE, _added);
      stage.colorCorrection = ColorCorrection.ON;
    }
  }
}

Answer 2

您无法将代码放在课堂外。删除行

stage.colorCorrection = ColorCorrection.ON;

并将其放在Document Class构造函数上。如果您遇到问题，则意味着您的应用程序未正确设置。我建议您创建一个新问题，或阅读this tutorial。

Flash AS3色彩校正

2 个答案: