Class: BarChart

• Inheritance
• Description
• Related information
• Class protocol
  • instance creation
  • startup
• Instance protocol
  • accessing
  • accessing-color & font
  • drawing
  • initialization
  • private
• Examples

Inheritance:

   Object
   |
   +--AbstractChart
      |
      +--BarChart

Package:

stx:libwidg3

Category:

Statistic-Charts

Version:

rev: 1.11 date: 2017/11/28 18:23:45

user: cg

file: BarChart.st directory: libwidg3

module: stx stc-classLibrary: libwidg3

Author:

Timo Merkert (tm@idefix)

Description:

hallo erstmal...

 a simple BarChart, 

 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.
 This was one if the author's very first smalltalk programs ever.
 So please excuse any odd code.



 [instance variables:]
     minWidth        left Viewport limit 
     maxWidth        right Viewport limit
     maxHeight       top Viewport limit
     minHeight       bottom Viewport limit
     xAbstand        difference between vertical lines
     yMaxScale       limit of horizontal value
     anzahl          number of values
     summe           summe of all values
     maxWert         biggest value
     schrumpf        factor of ...
     aod             Aray of Dictionaries
     foregroundColor color for label
     backgroundColor color for background lines
     label1          name of bar chart
     style           fontstyle
     newfont 
     oldfont

Related information:

    PieChartWidget
    ChartDescription

Class protocol:

 new

 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)

 aod

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

 aod: something

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

 barChartName

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

 barChartName: something

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

 label

 label: aString

 maxHeight

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

 maxHeight: something

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

 maxWert

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

 maxWert: something

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

 maxWidth

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

 maxWidth: something

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

 minHeight

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

 minHeight: something

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

 minWidth

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

 minWidth: something

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

 model: newModel

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

 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)

 schrumpf

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

 schrumpf: something

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

 xAbstand

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

 xAbstand: something

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

 yMaxScale

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

 yMaxScale: something

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

 drawBarBarsOn: aView

draw some filled rectangle as like bars in a barChart.

 drawBarChartOn: aView

get number of bars

 drawBarScale2On: aView

xAbstand is a instanzVariable

 drawBarScaleOn: aView

xAbstand is a instanzVariable

 drawLogoOn: aView

put demo values into model

 redrawBarChartOn: aView

Instanzvariablen initialisieren

 writeLabelOn: aView

 initialize

 getAnzahl

ermittelt die Anzahl der belegten Diagrammstücke

 getMaxWert

initialisiert die Instanzvariable maxWert mit dem größten Wert

 getSumme

initialisiert die Instanzvariable summe mit der Gesammtsumme

Examples:

        |p chart bars holder|

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

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

        p := BarChartWidget new.
        p model:(holder := ValueHolder new).
        p extent:400@250.
        p label:'demo BarChart'.
        p open.
        holder value:chart.
        Delay waitForSeconds:2.

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

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

            holder value:nil.
            holder value:chart.
        ]

        |p chart bars holder v|

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

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

        p := BarChart new.
        p model:(holder := chart asValue).
        p label:'demo BarChart'.

        v := View new.
        v extent:400@250.
        v open.
        Delay waitForSeconds:1.
        p redrawBarChartOn:v.