Add Set Demo example
This commit is contained in:
Timothy Warren
parent
c280226e4d
commit
39728691b3
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unit dualdigitsset;
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{$mode objfpc}{$H+}
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interface
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uses
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SysUtils;
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type
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TDigits = 0..9;
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TDigitSet = set of TDigits;
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{ TDualAZSet }
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TDualAZSet = class
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private
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FsetA, FsetZ: TDigitSet;
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function GetDiffAZAsText: string;
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function GetDiffZAAsText: string;
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function GetIntersectionAsText: string;
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function GetSetAasText: string;
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function GetSetZasText: string;
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function GetSymDiffAsText: string;
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function GetUnionAsText: string;
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function SetAsString(s: TDigitSet): string;
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public
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property DiffAZAsText: string read GetDiffAZAsText;
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property DiffZAAsText: string read GetDiffZAAsText;
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property IntersectionAsText: string read GetIntersectionAsText;
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property SetA: TDigitSet read FsetA write FsetA;
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property SetAasText: string read GetSetAasText;
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property SetZ: TDigitSet read FsetZ write FsetZ;
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property SetZasText: string read GetSetZasText;
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property SymDiffAsText: string read GetSymDiffAsText;
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property UnionAsText: string read GetUnionAsText;
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end;
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implementation
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{ TDualAZSet }
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function TDualAZSet.GetDiffAZAsText: string;
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begin
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Result := SetAsString(FsetA - FsetZ);
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end;
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function TDualAZSet.GetDiffZAAsText: string;
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begin
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Result := SetAsString(FsetZ - FsetA);
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end;
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function TDualAZSet.GetIntersectionAsText: string;
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begin
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Result := SetAsString(FsetA * FsetZ);
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end;
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function TDualAZSet.GetSetAasText: string;
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begin
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Result := SetAsString(FsetA);
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end;
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function TDualAZSet.GetSetZasText: string;
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begin
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Result := SetAsString(FsetZ);
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end;
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function TDualAZSet.GetSymDiffAsText: string;
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begin
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Result := SetAsString(FsetA + FsetZ - FsetA * FsetZ);
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end;
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function TDualAZSet.GetUnionAsText: string;
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begin
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Result := SetAsString(FsetA + FsetZ);
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end;
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function TDualAZSet.SetAsString(s: TDigitSet): string;
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var d: TDigits;
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begin
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Result := EmptyStr;
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for d in TDigitSet do
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if (d in s) then
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begin
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if Length(Result) > 0
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then AppendStr(Result, ',');
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AppendStr(Result, IntToStr(d));
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end;
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Result := Format('[%s]', [Result]);
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end;
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end.
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Binary file not shown.
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After Width: | Height: | Size: 134 KiB |
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@ -0,0 +1,83 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<CONFIG>
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<ProjectOptions>
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<Version Value="11"/>
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<General>
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<SessionStorage Value="InProjectDir"/>
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<MainUnit Value="0"/>
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<Title Value="Integer set demo"/>
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<Scaled Value="True"/>
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<ResourceType Value="res"/>
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<UseXPManifest Value="True"/>
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<XPManifest>
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<DpiAware Value="True"/>
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</XPManifest>
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<Icon Value="0"/>
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</General>
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<BuildModes Count="1">
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<Item1 Name="Default" Default="True"/>
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</BuildModes>
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<PublishOptions>
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<Version Value="2"/>
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<UseFileFilters Value="True"/>
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</PublishOptions>
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<RunParams>
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<FormatVersion Value="2"/>
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<Modes Count="0"/>
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</RunParams>
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<RequiredPackages Count="1">
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<Item1>
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<PackageName Value="LCL"/>
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</Item1>
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</RequiredPackages>
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<Units Count="3">
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<Unit0>
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<Filename Value="setdemo.lpr"/>
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<IsPartOfProject Value="True"/>
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</Unit0>
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<Unit1>
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<Filename Value="setdemo_main.pas"/>
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<IsPartOfProject Value="True"/>
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<ComponentName Value="MainForm"/>
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<ResourceBaseClass Value="Form"/>
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</Unit1>
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<Unit2>
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<Filename Value="dualdigitsset.pas"/>
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<IsPartOfProject Value="True"/>
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</Unit2>
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</Units>
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</ProjectOptions>
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<CompilerOptions>
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<Version Value="11"/>
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<Target>
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<Filename Value="setdemo"/>
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</Target>
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<SearchPaths>
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<IncludeFiles Value="$(ProjOutDir)"/>
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<UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
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</SearchPaths>
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<Linking>
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<Debugging>
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<DebugInfoType Value="dsDwarf2"/>
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</Debugging>
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<Options>
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<Win32>
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<GraphicApplication Value="True"/>
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</Win32>
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</Options>
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</Linking>
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</CompilerOptions>
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<Debugging>
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<Exceptions Count="3">
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<Item1>
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<Name Value="EAbort"/>
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</Item1>
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<Item2>
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<Name Value="ECodetoolError"/>
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</Item2>
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<Item3>
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<Name Value="EFOpenError"/>
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</Item3>
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</Exceptions>
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</Debugging>
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</CONFIG>
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@ -0,0 +1,23 @@
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program setdemo;
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{$mode objfpc}{$H+}
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uses
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{$IFDEF UNIX}{$IFDEF UseCThreads}
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cthreads,
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{$ENDIF}{$ENDIF}
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Interfaces, // this includes the LCL widgetset
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Forms, setdemo_main, dualdigitsset
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{ you can add units after this };
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{$R *.res}
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begin
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RequireDerivedFormResource:=True;
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Application.Title:='Integer set demo';
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// Application.Scaled:=True;
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Application.Initialize;
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Application.CreateForm(TMainForm, MainForm);
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Application.Run;
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end.
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object MainForm: TMainForm
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Left = 668
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Height = 380
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Top = 250
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Width = 400
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Caption = 'Visualising two sets of digits.'
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ClientHeight = 380
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ClientWidth = 400
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OnCreate = FormCreate
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OnDestroy = FormDestroy
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LCLVersion = '2.0.12.0'
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object pnlA: TPanel
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Left = 0
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Height = 80
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Top = 0
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Width = 400
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Align = alTop
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ClientHeight = 80
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ClientWidth = 400
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Color = clGradientActiveCaption
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Font.Style = [fsBold]
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ParentColor = False
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ParentFont = False
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TabOrder = 0
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object editSetA: TLabeledEdit
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Left = 235
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Height = 22
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Top = 40
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Width = 150
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EditLabel.Height = 16
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EditLabel.Width = 34
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EditLabel.Caption = 'Set A'
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EditLabel.ParentColor = False
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LabelPosition = lpLeft
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LabelSpacing = 5
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ReadOnly = True
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TabOrder = 0
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TabStop = False
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end
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end
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object pnlZ: TPanel
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Left = 0
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Height = 80
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Top = 80
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Width = 400
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Align = alTop
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ClientHeight = 80
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ClientWidth = 400
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Color = clGradientInactiveCaption
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Font.Style = [fsBold]
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ParentColor = False
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ParentFont = False
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TabOrder = 1
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object editSetZ: TLabeledEdit
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Left = 235
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Height = 22
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Top = 40
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Width = 150
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EditLabel.Height = 16
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EditLabel.Width = 34
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EditLabel.Caption = 'Set Z'
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EditLabel.ParentColor = False
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LabelPosition = lpLeft
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LabelSpacing = 5
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ReadOnly = True
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TabOrder = 0
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TabStop = False
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end
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end
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object pnlResultSets: TPanel
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Left = 0
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Height = 220
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Top = 160
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Width = 400
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Align = alClient
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ClientHeight = 220
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ClientWidth = 400
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Color = clScrollBar
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Font.Style = [fsBold]
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ParentColor = False
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ParentFont = False
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TabOrder = 2
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object editUnion: TLabeledEdit
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Left = 235
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Height = 22
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Top = 10
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Width = 150
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EditLabel.Height = 16
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EditLabel.Width = 139
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EditLabel.Caption = 'Union of A && Z (A + Z)'
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EditLabel.ParentColor = False
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LabelPosition = lpLeft
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LabelSpacing = 5
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ReadOnly = True
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TabOrder = 4
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TabStop = False
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end
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object editIntersection: TLabeledEdit
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Left = 235
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Height = 22
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Top = 50
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Width = 150
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EditLabel.Height = 16
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EditLabel.Width = 177
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EditLabel.Caption = 'Intersection of A && Z (A * Z)'
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EditLabel.ParentColor = False
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LabelPosition = lpLeft
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LabelSpacing = 5
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ReadOnly = True
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TabOrder = 0
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TabStop = False
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end
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object editSymmetricDiff: TLabeledEdit
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Left = 235
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Height = 22
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Top = 90
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Width = 150
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EditLabel.Height = 16
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EditLabel.Width = 155
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EditLabel.Caption = 'Symmetric Diff. of A && Z'
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EditLabel.ParentColor = False
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LabelPosition = lpLeft
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LabelSpacing = 5
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ReadOnly = True
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TabOrder = 3
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TabStop = False
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end
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object editDiffAZ: TLabeledEdit
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Left = 235
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Height = 22
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Top = 130
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Width = 150
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EditLabel.Height = 16
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EditLabel.Width = 167
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EditLabel.Caption = 'Difference of A && Z (A - Z)'
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EditLabel.ParentColor = False
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LabelPosition = lpLeft
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LabelSpacing = 5
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ReadOnly = True
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TabOrder = 2
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TabStop = False
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end
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object editDiffZA: TLabeledEdit
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Left = 235
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Height = 22
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Top = 170
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Width = 150
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EditLabel.Height = 16
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EditLabel.Width = 167
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EditLabel.Caption = 'Difference of Z && A (Z - A)'
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EditLabel.ParentColor = False
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LabelPosition = lpLeft
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LabelSpacing = 5
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ReadOnly = True
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TabOrder = 1
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TabStop = False
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end
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end
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end
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@ -0,0 +1,122 @@
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unit setdemo_main;
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{$mode objfpc}{$H+}
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interface
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uses
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Buttons, Forms, Controls, Graphics, Dialogs, ExtCtrls,
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dualdigitsset, SysUtils, Classes, strutils;
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type
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TButtonArr = array[TDigits] of TSpeedButton;
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{ TMainForm }
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TMainForm = class(TForm)
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editSetA: TLabeledEdit;
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editSetZ: TLabeledEdit;
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editUnion: TLabeledEdit;
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editIntersection: TLabeledEdit;
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editSymmetricDiff: TLabeledEdit;
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editDiffAZ: TLabeledEdit;
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editDiffZA: TLabeledEdit;
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pnlA: TPanel;
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pnlResultSets: TPanel;
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pnlZ: TPanel;
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procedure FormCreate(Sender: TObject);
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procedure FormDestroy(Sender: TObject);
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private
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ds: TDualAZSet;
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function CreateButtons(setID: Char): TButtonArr;
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procedure ButtonClick(Sender: TObject);
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procedure UpdateSetExpressions;
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public
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end;
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var
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MainForm: TMainForm;
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implementation
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{$R *.lfm}
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{ TMainForm }
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procedure TMainForm.FormCreate(Sender: TObject);
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begin
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ds := TDualAZSet.Create;
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CreateButtons('A');
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CreateButtons('Z');
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end;
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procedure TMainForm.FormDestroy(Sender: TObject);
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begin
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ds.Free;
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end;
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function TMainForm.CreateButtons(setID: Char): TButtonArr;
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const
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spacing = 10;
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aLeft = 40;
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var
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i: integer;
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b: TSpeedButton;
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begin
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for i := Low(TDigits) to High(TDigits) do
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begin
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b := TSpeedButton.Create(Self);
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b.Top := spacing;
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b.Left := aLeft + i * (b.Width + spacing);
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b.Caption := IntToStr(i);
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b.Tag := i;
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b.Name := Format('%s%d', [setID, i]);
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case setId of
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'A': b.Parent := pnlA;
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'Z': b.Parent := pnlZ;
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end;
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b.OnClick := @ButtonClick;
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Result[i] := b;
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end;
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end;
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procedure TMainForm.ButtonClick(Sender: TObject);
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var b: TSpeedButton;
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begin
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// We only care about SpeedButtons. Just return for others.
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if not (Sender is TSpeedButton) then Exit;
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b := TSpeedButton(Sender);
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case b.Name[1] of
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'A': begin
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if (b.Tag in ds.SetA)
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then ds.SetA := ds.SetA - [b.Tag]
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else ds.SetA := ds.SetA + [b.Tag];
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editSetA.Caption := ds.SetAasText;
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end;
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'Z': begin
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if (b.Tag in ds.SetZ)
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then ds.SetZ := ds.SetZ - [b.Tag]
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else ds.SetZ := ds.SetZ + [b.Tag];
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editSetZ.Caption := ds.SetZasText;
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end;
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end;
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UpdateSetExpressions;
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end;
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procedure TMainForm.UpdateSetExpressions;
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begin
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editUnion.Caption := ds.UnionAsText;
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editSymmetricDiff.Caption := ds.SymDiffAsText;
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editIntersection.Caption := ds.IntersectionAsText;
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editDiffAZ.Caption := ds.DiffAZasText;
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editDiffZA.Caption := ds.DiffZAasText;
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end;
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end.
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