Class: ChartDescription

• Inheritance
• Description
• Instance protocol
  • accessing
  • accessing-color & font
  • change & update
  • drawing
  • event handling
  • hooks
  • initialization
  • private
  • views
• Examples

Inheritance:

   Object
   |
   +--GraphicsMedium
      |
      +--DisplaySurface
         |
         +--SimpleView
            |
            +--View
               |
               +--ChartDescription

Package:

stx:libwidg3

Category:

Views-Graphs

Version:

rev: 1.20 date: 2023/07/06 14:35:48

user: cg

file: ChartDescription.st directory: libwidg3

module: stx stc-classLibrary: libwidg3

Description:

 This is a demo widget programmed as a learning experience...

 hallo erstmal...

 ChartDescription for a diagram, whose values are a model as like an array of dictionaries 
 so have a look at 'class - documentation - examples'
 This can be used beside a BarChartWidget or PieChartWidget as
 a legend (extracting its values from the same model).



 [instance variables:]
 xPos                x-Koordinate für Color-Punkt
 anzahl              number of pie-pieces
 summe               result of all values
 aod                 Array of Dictionaries
 aoHilf              Array für Hilfsvariablen der Winkelberechnungen
 foregroundColor     Textfarbe
 backgroundColor     Hintergrundfarbe
 label1              Name der Legende

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.

Instance protocol:

 anzahl

return the value of the instance variable 'anzahl' (automatically generated)

 anzahl: something

set the value of the instance variable 'anzahl' (automatically generated)

 aod

return the value of the instance variable 'aod' (automatically generated)

 aod: something

set the value of the instance variable 'aod' (automatically generated)

 model: newModel

(comment from inherited method)
Set the model.
Here, if I am my own menuPerformer/menuHolder,
set the menuHolder and menuPerformer to the model.
This is a compatibility kludge,
since typically, ST-80 code expects the model to provide a menu
and perform it. If the model does not support a menu message,
it will be forwarded to the view.
Those apps which want the view to provide the (default) menu have to reset
this by sending #menuHolder: message (again)

 summe

return the value of the instance variable 'summe' (automatically generated)

 summe: something

set the value of the instance variable 'summe' (automatically generated)

 verticalY

return the value of the instance variable 'verticalY' (automatically generated)

 verticalY: something

set the value of the instance variable 'verticalY' (automatically generated)

 xPos

return the value of the instance variable 'xPos' (automatically generated)

 xPos: something

set the value of the instance variable 'xPos' (automatically generated)

 backgroundColor

return the value of the instance variable 'backgroundColor' (automatically generated)

 backgroundColor: something

set the value of the instance variable 'backgroundColor' (automatically generated)

 foregroundColor

return the value of the instance variable 'foregroundColor' (automatically generated)

 foregroundColor: something

set the value of the instance variable 'foregroundColor' (automatically generated)

 update: something with: aParameter from: changedObject

 drawChartDesc

draw Demo

 drawDemo

put demo values into model

 drawDemo2

Zeilen Anordung

 drawDescription

y-koordinate

 redrawChartDesc

 redrawX: x y: y width: w height: h

(comment from inherited method)
redraw part of myself immediately, given logical coordinates
(if transformation is nonNil)
The default here is to redraw everything
- subclasses usually redefine this, adding more intelligence

 sizeChanged: how from: oldExtentOrNil

my view has changed the size (not the contents)

 postBuildWith: aBuilder

 initialize

initialisierung und sein Kind

 fillAod

"fills the Dictionaries in Array with Values"

 getAnzahl

ermittelt die Anzahl der belegten Diagrammstücke

 getMaxStringLen

ermittelt die position in aod, die den längsten String enthält

 getNewFontSize

maximale Stringlänge

 getNewFontSize2

neue Schriftgröße vorbereiten

 getSumme

initialisiert die Instanzvariable summe mit der Gesammtsumme

 getVerticalStep

y-koordinate

 getChartDescription

Examples:

        |p chart piece holder|

        chart := OrderedCollection new.
        piece := Dictionary new.
        piece at:#name put:'Güllemütz'.
        piece at:#color put:Color red.
        chart add:piece.

        piece := Dictionary new.
        piece at:#name put:'Hallabadkapp'.
        piece at:#color put:Color blue.
        chart add:piece.

        p := ChartDescription new.
        p model:(holder := ValueHolder new).
        p open.

      'here is the model'.
        holder value:chart.
        Delay waitForSeconds:2.
        1 to: 20 do:[:i |
            piece := Dictionary new.
            i odd ifTrue:[
                piece at:#name put:'Hallo erstmal...'.
                piece at:#color put:Color green.
            ]
            ifFalse:[
                piece at:#name put:'...und Tschüss'.
                piece at:#color put:Color magenta.
            ].
            chart add:piece.

            holder value:nil.
            holder value:chart.
        ].