CODEWITHSUNDEEP
apache-flexprintingflex4.5
Fletch
Fletch

Reputation: 5219

How to Print in Flex without the UI Components disappearing

I'm printing from flex, and since I want to customise the jobs such as with margins and a title, I created a UI Component PrintTemplate. I add my stuff to the PrintTemplate and then I print it.

So the code is something like:

printTemplate.addElement(diagram);
addElement(printTemplate);

if (printJob.start()) {
  printJob.addObject(printTemplate);
  printJob.send()
}

The problem is that the UI components disappear from where they should be on the page when you add them to the printTemplate. This looks weird, even though you can add them back later. Is there a way around this - to stop them disappearing when I add them to the template?

Upvotes: 0

Views: 743

Answers (1)

Exort
Exort

Reputation: 1075

A component cannot be the child of two containers at the same time so there's no way you can show them in the original container.

You can, however, take a snapshot of the component you want to print and display it in a BitmapImage as the first child of that component. When printing is done, simply remove the BitmapImage.

    private function displaySnapshot():void
    {
        var bitmapData:BitmapData = new  BitmapData(_displayObject.width,_displayObject.height,false);
        bitmapData.draw(_displayObject,null,null,null,null,true);
        _snapshotImage = new Bitmap(bitmapData);
        _displayObject.addChildAt(_snapshotImage,0);
        _displayObject.visible = false; //optional
    }

    private function removeSnapshot(event:Event):void
    {
        EventDispatcher(event.target).removeEventListener(event.type,arguments.callee);
        _displayObject.parent.removeChild(_snapshotImage);
        _displayObject.visible = true
    }

Upvotes: 2

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