Class: InputView

• Inheritance
• Description
• Instance protocol
  • accessing
  • drag & drop
  • event handling
  • initialization
  • redefined dummy

Inheritance:

   Object
   |
   +--GraphicsMedium
      |
      +--DisplaySurface
         |
         +--SimpleView
            |
            +--InputView

Package:

stx:libview2

Category:

Views-Special

Version:

rev: 1.23 date: 2016/11/04 12:39:35

user: cg

file: InputView.st directory: libview2

module: stx stc-classLibrary: libview2

Author:

Claus Gittinger

Description:

a view for input only - forwarding all events to another object.
This kind of view can be used to be laid on top of another view to catch all
input. (Interface builder)
NOTICE: the event forwarding is a leftover from times when not delegation mechanism
        existed - it will vanish - use delegates for new code.

Instance protocol:

 eventReceiver: aView

set the view to which input events are forwarded

 isInputOnly

return true, since this is a transparent input-only view

 canDrop: aDropContext

return true, if aCollectionOfDropObjects can be dropped here.
Delegated to my eventReceiving view

 canDrop: aDropContext at: aPoint

return true, if aCollectionOfDropObjects can be dropped here.
Delegated to my eventReceiving view

 canDropObjects: aCollectionOfDropObjects

return true, if aCollectionOfDropObjects can be dropped here.
Delegated to my eventReceiving view

 canDropObjects: aCollectionOfDropObjects at: aPoint

return true, if aCollectionOfDropObjects can be dropped here.
Delegated to my eventReceiving view

 drop: aDropContext

drop aCollectionOfDropObjects here.
Delegated to my eventReceiving view

 drop: aDropContext at: aPoint

drop aCollectionOfDropObjects here.
Delegated to my eventReceiving view

 dropObjects: aCollectionOfDropObjects

drop aCollectionOfDropObjects here.
Delegated to my eventReceiving view

 dropObjects: aCollectionOfDropObjects at: aPoint

drop aCollectionOfDropObjects here.
Delegated to my eventReceiving view

 buttonMotion: state x: x y: y

redefined to forward the event to my eventReceiver

 buttonPress: button x: x y: y

redefined to forward the event to my eventReceiver

 buttonRelease: button x: x y: y

redefined to forward the event to my eventReceiver

 exposeX: x y: y width: w height: h

dummy - will never be received

 focusIn

redefined to forward the event to my eventReceiver

 focusOut

redefined to forward the event to my eventReceiver

 keyPress: key x: x y: y

redefined to forward the event to my eventReceiver

 keyRelease: key x: x y: y

redefined to forward the event to my eventReceiver

 pointerEnter: state x: x y: y

redefined to forward the event to my eventReceiver

 pointerLeave: state

redefined to forward the event to my eventReceiver

 initialize

 setViewBackground

dummy - inputviews have no background