Class: SubCanvas

• Inheritance
• Description
• Class protocol
  • defaults
• Instance protocol
  • accessing
  • accessing-canvasView handling
  • accessing-channels
  • building
  • change & update
  • delegation
  • initialization
  • layout
  • queries

Inheritance:

   Object
   |
   +--GraphicsMedium
      |
      +--DisplaySurface
         |
         +--SimpleView
            |
            +--ScrollableView
               |
               +--SubCanvas

Package:

stx:libwidg2

Category:

Views-Basic

Version:

rev: 1.74 date: 2018/09/18 09:46:07

user: stefan

file: SubCanvas.st directory: libwidg2

module: stx stc-classLibrary: libwidg2

Author:

Claus Atzkern

Description:

a view for a subApplication.

Made to be VW compatible as much as possible (try opening a RefactoringBrowser ...).
However, the default setup is not very useful to embed arbitrary applications
which are meant to be separate stand-alone applications.

Use the settings:
    keepClientView          (default: true)
    useApplicationSubView   (default: false)
    useOwnBuilder           (default: false)

Class protocol:

 defaultHorizontalScrollable

 defaultVerticalScrollable

Instance protocol:

 builder

 builder: aBuilder

 client

 client: anApplication spec: aWindowSpecOrSpecSymbol builder: aBuilder

release existing components and generate new components from
the given windowSpec, using the given builder.

 clientView

 clientViewIsScrolled

 horizontalMini: aBoolean

 isScrollWrapper

 makeClientViewScrollable: shouldBeScrollable

 setClient: anApplicationModel

set the client - do NOT rebuild

 spec

 spec: something

 verticalMini: aBoolean

 widget

ST80 compatibility.
I am my own widget

 keepClientView: aBoolean

 useApplicationSubView: aBoolean

 useOwnBuilder: aBoolean

 clientHolder

 clientHolder: aValueHolder

 clientView: aView

 specHolder

 specHolder: aValueHolder

 specHolder: newSpecHolder clientHolder: newClientHolder

 container: aView

my builder can only build the components, when I have a container

 rebuild

rebuild my GUI from the spec.

 releaseAllComponents

 update: something with: aParameter from: changedObject

 updateFromChannels

some of our channels (clientHolder, specHolder) changed

 viewBackground: aColor

convenient method: forward this to the scrolledView

 initialize

these defaults make subCanvas compatible with VW;

 release

(comment from inherited method)
remove all dependencies from the receiver

 usedScrolledViewHMarginWhenHasV: hasV andHasH: hasH

return the horizontal margin around (outer margin).
Redefined to avoid margin when no scrollers are present

 usedScrolledViewVMarginWhenHasV: hasV andHasH: hasH

return the horizontal margin around (outer margin).
Redefined to avoid margin when no scrollers are present

 application

return the application, under which this view was opened