Wait until the end of the transition between two images.

I'm developing an ActionScript 3.0 for Blackberry Playbook application.

I have twelve images loaded with a class Loader. I use Event.ENTER_FRAME melted and melted images using this event handler:

private function onEnterFrame(event:Event):void
    {
        imageToFront.alpha += 0.1; // slow fade
        imageToBack.alpha -= 0.1;

        if( imageToFront.alpha >= 1.0 )
        {
            imageToFront.alpha = 1.0;

            // hide the first image
            imageToBack.alpha = 0.0;
            imageToBack.visible = false;

            // remove the enter frame event listener
            stage.removeEventListener( Event.ENTER_FRAME, onEnterFrame );
        }
    }

When a user clicks an image his manager fundraising click the following:

private function onImageClicked(event:MouseEvent):void
    {
        switch((event.currentTarget as Loader).name)
        {
            case imageCell11Back.name:
                imageToFront = imageCell11Front;
                imageToBack = imageCell11Back;
                break;
            case imageCell11Front.name:
                imageToFront = imageCell11Back;
                imageToBack = imageCell11Front;
                break;
            case imageCell12Back.name:
                imageToFront = imageCell12Front;
                imageToBack = imageCell12Back;
                break;
            case imageCell12Front.name:
                imageToFront = imageCell12Back;
                imageToBack = imageCell12Front;
                break;
            case imageCell13Back.name:
                imageToFront = imageCell13Front;
                imageToBack = imageCell13Back;
                break;
            case imageCell13Front.name:
                imageToFront = imageCell13Back;
                imageToBack = imageCell13Front;
                break;
            case imageCell21Back.name:
                imageToFront = imageCell21Front;
                imageToBack = imageCell21Back;
                break;
            case imageCell21Front.name:
                imageToFront = imageCell21Back;
                imageToBack = imageCell21Front;
                break;
            case imageCell22Back.name:
                imageToFront = imageCell22Front;
                imageToBack = imageCell22Back;
                break;
            case imageCell22Front.name:
                imageToFront = imageCell22Back;
                imageToBack = imageCell22Front;
                break;
            case imageCell23Back.name:
                imageToFront = imageCell23Front;
                imageToBack = imageCell23Back;
                break;
            case imageCell23Front.name:
                imageToFront = imageCell23Back;
                imageToBack = imageCell23Front;
                break;
        }
        stage.addEventListener(Event.ENTER_FRAME, onEnterFrame);
        imageToFront.visible = true;
    }

I'm having the following problem:

If the user clicks on another picture until the previous image did not reach this image with a less than 1.0 alpha to alpha = 1.0 left TI.

In other words, I have to do something for the function onEnterFrame left the 1.0 alpha value.

Any ideas?

I tried with stage.hasEventListener (Event.ENTER_FRAME) to wait until the Manager came out, but it does not work (it's always return true).

My solution:

private function onEnterFrame(event:Event):void
    {
        imageToFront.alpha += 0.1; // slow fade
        imageToBack.alpha -= 0.1;

        if( imageToFront.alpha >= 1.0 )
        {
            imageToFront.alpha = 1.0;

            // hide the first image
            imageToBack.alpha = 0.0;
            imageToBack.visible = false;

            // remove the enter frame event listener
            stage.removeEventListener( Event.ENTER_FRAME, onEnterFrame );
            faddingCard = false;
        }
    }

When a user clicks an image his manager fundraising click the following:

private function onImageClicked(event:MouseEvent):void
    {
        if (faddingCard) return;

        switch((event.currentTarget as Loader).name)
        {
            case imageCell11Back.name:
                imageToFront = imageCell11Front;
                imageToBack = imageCell11Back;
                break;
            case imageCell11Front.name:
                imageToFront = imageCell11Back;
                imageToBack = imageCell11Front;
                break;
            case imageCell12Back.name:
                imageToFront = imageCell12Front;
                imageToBack = imageCell12Back;
                break;
            case imageCell12Front.name:
                imageToFront = imageCell12Back;
                imageToBack = imageCell12Front;
                break;
            case imageCell13Back.name:
                imageToFront = imageCell13Front;
                imageToBack = imageCell13Back;
                break;
            case imageCell13Front.name:
                imageToFront = imageCell13Back;
                imageToBack = imageCell13Front;
                break;
            case imageCell21Back.name:
                imageToFront = imageCell21Front;
                imageToBack = imageCell21Back;
                break;
            case imageCell21Front.name:
                imageToFront = imageCell21Back;
                imageToBack = imageCell21Front;
                break;
            case imageCell22Back.name:
                imageToFront = imageCell22Front;
                imageToBack = imageCell22Back;
                break;
            case imageCell22Front.name:
                imageToFront = imageCell22Back;
                imageToBack = imageCell22Front;
                break;
            case imageCell23Back.name:
                imageToFront = imageCell23Front;
                imageToBack = imageCell23Back;
                break;
            case imageCell23Front.name:
                imageToFront = imageCell23Back;
                imageToBack = imageCell23Front;
                break;
        }
        faddingCard = true;
        stage.addEventListener(Event.ENTER_FRAME, onEnterFrame);
        imageToFront.visible = true;
    }

I added a class Boolean faddingCard variable to control when onImageClick is thrown.

This solution is faster than Tweener or TweenLite.

Thank you very much for your help.

Tags: BlackBerry Developers

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