Class: PieChartWidget

• Inheritance
• Description
• Related information
• Class protocol
  • startup
• Instance protocol
  • accessing
  • change & update
  • drawing
  • event handling
  • hooks
  • initialization
  • private
  • views
• Examples

Inheritance:

   Object
   |
   +--GraphicsContext
      |
      +--DeviceGraphicsContext
         |
         +--GraphicsMedium
            |
            +--DisplaySurface
               |
               +--SimpleView
                  |
                  +--View
                     |
                     +--PieChartWidget

Package:

stx:libwidg3

Category:

Views-Misc

Version:

rev: 1.10 date: 2009/05/13 11:12:36

user: cg

file: PieChartWidget.st directory: libwidg3

module: stx stc-classLibrary: libwidg3

Author:

Timo Merkert (tm@idefix)

Description:

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

 hallo erstmal...

 a simple PieChart, 
 (zeigt ein Tortendiagramm, wobei die Stuecke jedoch nicht essbar sind.)

 The model is a collection of chart description items,
 each being a dictionary filled with entries for:
     #value  aNumber         the numeric value
     #color  aColor          the color

 see example on how to fill such a chartDescription model.



 [instance variables:]
 middlePoint,        only for the point in the middle => therefor middlepoint
 radX                radian for x-coordinate
 radY                radian for y-coordinate
 anzahl              number of pie-pieces
 summe               result of all values
 aod                 Array of Dictionaries
 aoHilf              Array with Helpkoordinates
 foregroundColor     textcolor for percentdisplaying
 backgroundColor     backgoundcolor of pie chart
 label1              name of pie chart

Related information:

    BarChartWidget
    ChartDescription

Class protocol:

 open

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)

 aoHilf

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

 aoHilf: something

set the value of the instance variable 'aoHilf' (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)

 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)

 label

 label: aString

 middlePoint

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

 middlePoint: aPoint

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

 model: newModel

 newfont

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

 newfont: something

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

 oldfont

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

 oldfont: something

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

 pieChartName

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

 pieChartName: something

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

 rF

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

 rF: something

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

 radX

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

 radX: something

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

 radY

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

 radY: something

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

 style

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

 style: something

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

 summe

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

 summe: something

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

 delayedUpdateModel

 update: something with: aParameter from: changedObject

 drawLogo

 drawLogo2

 drawPercentDescription

 drawPieChart

 drawPiePieces

draw a filled arc in a box, given startAngle and endAngle.

 redrawPieChart

 writeLabel

 redrawX: x y: y width: w height: h

 sizeChanged: how

 postBuildWith: aBuilder

automatically generated by UIPainter ...

 initialize

 fillAod

fills the Dictionaries in Array with Values

 getAnzahl

ermittelt die Anzahl der belegten Diagrammstuecke

 getSummme

initialisiert die Instanzvariable summe mit der Gesammtsumme

 getPieChartWidget

Examples:

        |p chart piece holder|

        chart := OrderedCollection new.
        piece := Dictionary new.
        piece at:#value put:50.
        piece at:#color put:(Color red on:Display).
        chart add:piece.

        piece := Dictionary new.
        piece at:#value put:100.
        piece at:#color put:(Color blue on:Display).
        chart add:piece.

        p := PieChartWidget new.
        p model:(holder := ValueHolder new).
        p extent:300@300.
        p pieChartName:'demo PieChart'.
        p open.
        holder value:chart.
        Delay waitForSeconds:2.

        1 to: 5 do:[:i |
            piece := Dictionary new.
            piece at:#value put:30.

            piece at:#color put:(i odd ifTrue:[Color green on:Display] 
                                       ifFalse:[Color magenta on:Display]).
            chart add:piece.

            holder value:nil.
            holder value:chart.
        ]