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: 1.80 date: 2022/10/11 14:19:18

user: cg

file: SubCanvas.st directory: libwidg2

module: stx stc-classLibrary: libwidg2

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)

copyright
COPYRIGHT (c) 1998 by eXept Software AG
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.   This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

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

(comment from inherited method)
control the horizontal scrollBar to be either a miniScroller,
or a full scrollBar.

 isScrollWrapper

 makeClientViewScrollable: shouldBeScrollable

 setClient: anApplicationModel

set the client - do NOT rebuild

 spec

 spec: something

 verticalMini: aBoolean

(comment from inherited method)
control the vertical scrollBar to be either a miniScroller,
or a full scrollBar.

 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

(comment from inherited method)
whenever the scrolledView changes its contents, the scroller(s) must
be updated as well

 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;

 processEvent: anEvent

Return true, if I have eaten the event

 realize

https://expeccoalm.exept.de/D451154

 release

https://expeccoalm.exept.de/D451154

 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