[Question] Set sprite width/height

[flashultra]

I'm wondering why you don't allow to set width and height of the Sprite ?
I am currently simulating such properties in OpenFL with the following code:

class AbstractSprite extends openfl.display.Sprite{
    
    public var dirty : Bool;
    public var allowScale:Bool = false;

    public function new() {
        super();
        this.graphics.beginFill(0xe3d523a6, 1);
		this.graphics.drawRect(0, 0, 1, 1);
		this.graphics.endFill();
        dirty = true;
    }

    @:keep @:noCompletion override private function set_scaleX(value:Float):Float
    {
        return allowScale?super.set_scaleX(value):super.set_scaleX(1);
    }
    
	@:keep @:noCompletion override private function set_scaleY(value:Float):Float {
		return allowScale?super.set_scaleY(value):super.set_scaleY(1);
	}
}	

class Sprite extends AbstractSprite {
  private override function set_width(value:Float):Float {
   if ( dirty ) {
     this.graphics.drawRect(0, 0, value, this.height);
   } else {
    super.set_width(value);
  }
  private override function set_height(value:Float):Float {
   .....
  }
 }

Changing width and height will change the scaleX/scaleY, so I set it to 1 (in the code above)
I also implement some scalling options that allow scaling of each element on the scene (and x/y coordinates ), which is important for mobile devices.

[dimensionscape]

It's a good question. You can set the width and height of a sprite, but only if it has children. From a design standpoint I can see how that would make sense. Ideologically, the transform is being applied to the decedents of the container, but perhaps it makes more sense to be able to dictate the bounds virtually too.

[flashultra]

Well, there are at least two points here:

1. If you have an empty sprite with a set width and height, it could reserve some space used for calculations.
2. The other problem at the moment is: if we have an empty sprite and add a child with width = 300 and x = 120, the new width of the parent will be 300px, not 420px. See the example below:

  	var parentObject = new openfl.display.Sprite();
  	//Uncomment this to get 420px width
  	//parentObject.graphics.beginFill(0xe3d523a6, 1);
  	//parentObject.graphics.drawRect(0, 0, 1, 1);
  	//parentObject.graphics.endFill();
  	this.addChild(parentObject);
  	var childObject = new openfl.display.Sprite();
  	childObject.graphics.beginFill(0xe3d523a6, 1);
  	childObject.graphics.drawRect(0, 0, 300, 1);
  	childObject.graphics.endFill();
  	parentObject.addChild(childObject);
  	childObject.x = 120;
  	trace("width: "+parentObject.width);