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unit main;
{$mode objfpc}{$H+}
interface
uses
Classes, ComCtrls, ExtCtrls, Spin, StdCtrls, SysUtils, FileUtil, Forms,
Controls, Graphics, Dialogs, TAGraph, TARadialSeries, TASeries, TASources,
TATools;
type
{ TForm1 }
TForm1 = class(TForm)
ChartPolar: TChart;
ChartPolarSeries1: TPolarSeries;
ChartPolarSeries2: TPolarSeries;
ChartPie: TChart;
ChartPiePieSeries1: TPieSeries;
ChartToolset1: TChartToolset;
cbRotate: TCheckBox;
cbMarkPositions: TComboBox;
cbCloseCircle: TCheckBox;
cbShowPoints: TCheckBox;
cbFilled: TCheckBox;
lblTransparency: TLabel;
lblWords: TLabel;
lblLabelAngle: TLabel;
ListChartSource1: TListChartSource;
PageControl1: TPageControl;
Panel1: TPanel;
pnlPolar: TPanel;
RandomChartSource1: TRandomChartSource;
sbTransparency: TScrollBar;
seWords: TSpinEdit;
seLabelAngle: TSpinEdit;
tsPolar: TTabSheet;
tsPie: TTabSheet;
procedure cbCloseCircleChange(Sender: TObject);
procedure cbFilledChange(Sender: TObject);
procedure cbMarkPositionsChange(Sender: TObject);
procedure cbRotateChange(Sender: TObject);
procedure ChartPieMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure cbShowPointsChange(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure sbTransparencyChange(Sender: TObject);
procedure seWordsChange(Sender: TObject);
procedure seLabelAngleChange(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
{ TForm1 }
procedure TForm1.cbCloseCircleChange(Sender: TObject);
begin
ChartPolarSeries1.CloseCircle := cbCloseCircle.Checked;
ChartPolarSeries2.CloseCircle := cbCloseCircle.Checked;
end;
procedure TForm1.cbFilledChange(Sender: TObject);
begin
ChartPolarSeries1.Filled := cbFilled.Checked;
ChartPolarSeries2.Filled := cbFilled.Checked;
end;
procedure TForm1.cbMarkPositionsChange(Sender: TObject);
begin
ChartPiePieSeries1.MarkPositions :=
TPieMarkPositions(cbMarkPositions.ItemIndex);
end;
procedure TForm1.cbRotateChange(Sender: TObject);
begin
ChartPiePieSeries1.RotateLabels := cbRotate.Checked;
end;
procedure TForm1.cbShowPointsChange(Sender: TObject);
begin
ChartPolarSeries1.ShowPoints := cbShowPoints.Checked;
ChartPolarSeries2.ShowPoints := cbShowPoints.Checked;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
seWordsChange(nil);
end;
procedure TForm1.ChartPieMouseDown(
Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
i: Integer;
begin
i := ChartPiePieSeries1.FindContainingSlice(Point(X, Y));
if i < 0 then exit;
ListChartSource1.SetXValue(i, 0.2 - ListChartSource1[i]^.X);
ChartPie.Invalidate;
end;
procedure TForm1.sbTransparencyChange(Sender: TObject);
begin
ChartPolarSeries1.Transparency := sbTransparency.Position;
ChartPolarSeries2.Transparency := sbTransparency.Position;
lblTransparency.Caption := 'Transparency (' + IntToStr(sbTransparency.Position) + ')';
end;
procedure TForm1.seLabelAngleChange(Sender: TObject);
begin
ChartPiePieSeries1.Marks.LabelFont.Orientation := seLabelAngle.Value * 10;
end;
procedure TForm1.seWordsChange(Sender: TObject);
var
r: TMWCRandomGenerator;
function RandWord: String;
var
i: Integer;
begin
SetLength(Result, r.GetInRange(1, 5));
for i := 1 to Length(Result) do
Result[i] := Chr(r.GetInRange(Ord('a'), Ord('z')));
end;
var
i, j: Integer;
begin
r := TMWCRandomGenerator.Create;
try
r.Seed := 9823743;
for i := 0 to ListChartSource1.Count - 1 do
ListChartSource1[i]^.Text := '';
for j := 1 to seWords.Value do
for i := 0 to ListChartSource1.Count - 1 do
with ListChartSource1[i]^ do begin
if Text <> '' then
Text := Text + ' ';
Text := Text + RandWord;
end;
finally
r.Free;
end;
ChartPie.Invalidate;
end;
end.
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