" Views-events.st -- dispatch an event to a View

  Copyright (c) 2007 Ian Piumarta
  All rights reserved.

  Permission is hereby granted, free of charge, to any person obtaining a
  copy of this software and associated documentation files (the 'Software'),
  to deal in the Software without restriction, including without limitation
  the rights to use, copy, modify, merge, publish, distribute, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, provided that the above copyright notice(s) and this
  permission notice appear in all copies of the Software and that both the
  above copyright notice(s) and this permission notice appear in supporting
  documentation.

  THE SOFTWARE IS PROVIDED 'AS IS'.  USE ENTIRELY AT YOUR OWN RISK.

  Last edited: 2007-09-18 20:14:43 by piumarta on emilia
"

{ import: Views }

"TODO: this needs sideways composition"

CompositeView  applyTransform: aPointOrShape	[ ^aPointOrShape ]
ComposableView applyTransform: aPointOrShape	[ ^aPointOrShape ]
TransformView  applyTransform: aPointOrShape	[ ^aPointOrShape transformedBy: inverse ]

{ import: Event }

ComposableView handleEvent: anEvent
[
    | handler oldTransform |
    (self bounds containsPoint: anEvent localPosition) ifFalse: [^nil].

    anEvent withTransformedBy: self transform do: [
        contents handleEvent: anEvent
    ].

    (handler := anEvent handled) ifTrue: [^handler].
    (handler := self propertyAt: anEvent name) ifTrue: [handler value: self value: anEvent].
    (handler := anEvent handled) ifTrue: [^handler].
    ^(anEvent dispatchTo: self) ifTrue: [anEvent handled: self]
]

CompositeView handleEvent: anEvent
[
    self do: [:v |
	| handler |
	v handleEvent: anEvent.
	(handler := anEvent handled) ifTrue: [^handler]].
    anEvent dispatchTo: self.
]


ComposableView transformedBounds	[ ^self bounds ]
CompositeView transformedBounds		[ ^self bounds ]
TransformView transformedBounds		[ ^self applyTransform: self bounds ]

CompositeView pointerMotionEvent :anEvent	[ ^nil ]
CompositeView pointerDownEvent :anEvent		[ ^nil ]
CompositeView pointerUpEvent :anEvent		[ ^nil ]
CompositeView keyDownEvent :anEvent		[ ^nil ]
CompositeView keyRepeatEvent :anEvent		[ ^nil ]
CompositeView keyUpEvent :anEvent		[ ^nil ]
CompositeView damageEvent :anEvent		[ ^nil ]
CompositeView tickEvent :anEvent		[ ^nil ]

ComposableView pointerMotionEvent :anEvent	[ ^nil ]
ComposableView pointerDownEvent :anEvent	[ ^nil ]
ComposableView pointerUpEvent :anEvent		[ ^nil ]
ComposableView keyDownEvent :anEvent		[ ^nil ]
ComposableView keyRepeatEvent :anEvent		[ ^nil ]
ComposableView keyUpEvent :anEvent		[ ^nil ]
ComposableView damageEvent :anEvent		[ ^nil ]
ComposableView tickEvent :anEvent		[ ^nil ]