mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-10-31 01:04:50 +01:00
147 lines
3.8 KiB
ObjectPascal
147 lines
3.8 KiB
ObjectPascal
unit Main;
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{$mode objfpc}{$H+}
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interface
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uses
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ComCtrls, ExtCtrls, Forms, StdCtrls, TAFuncSeries, TAGraph, TASeries,
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TASources, TATools, TATransformations;
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type
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{ TForm1 }
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TForm1 = class(TForm)
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catTAutoAutoScaleAxisTransform1: TAutoScaleAxisTransform;
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catTAutoScaleAxisTransform1: TAutoScaleAxisTransform;
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catTAuto: TChartAxisTransformations;
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cbAuto: TCheckBox;
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ChartDateTime: TChart;
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ChartAxisGroup: TChart;
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ChartDateTimeLineSeries1: TLineSeries;
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ChartLog: TChart;
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cfsLog: TFuncSeries;
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cbLog: TCheckBox;
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ChartToolsetDateTime: TChartToolset;
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ChartToolset1ZoomIn: TZoomClickTool;
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ChartToolset1ZoomOut: TZoomClickTool;
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ChartTWinterBar: TBarSeries;
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clsLogPoints: TLineSeries;
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ChartT: TChart;
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catLog: TChartAxisTransformations;
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ChartAxisTransformations1LinearAxisTransform2: TLinearAxisTransform;
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ChartAxisTransformations1LogarithmAxisTransform1: TLogarithmAxisTransform;
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catT: TChartAxisTransformations;
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catTFahrToCel: TLinearAxisTransform;
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ChartCustomMarks: TChart;
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ChartCustomMarksBarSeries1: TBarSeries;
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ChartTSummer: TLineSeries;
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ChartTWinterLine: TLineSeries;
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DateTimeIntervalChartSource1: TDateTimeIntervalChartSource;
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lcsMarks: TListChartSource;
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PageControl1: TPageControl;
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pnlLogControls: TPanel;
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pnlAutoControls: TPanel;
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rcsDates: TRandomChartSource;
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rcsTSummer: TRandomChartSource;
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rcsTWinter: TRandomChartSource;
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lsLinear: TTabSheet;
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tsDateTime: TTabSheet;
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tsAxisGroup: TTabSheet;
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tsLog: TTabSheet;
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tsCustomMarks: TTabSheet;
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procedure cbAutoChange(Sender: TObject);
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procedure cbLogChange(Sender: TObject);
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procedure ChartLogFuncSeries1Calculate(const AX: Double; out AY: Double);
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procedure FormCreate(Sender: TObject);
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procedure TChartAxisList1MarkToText(var AText: String; AMark: Double);
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end;
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var
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Form1: TForm1;
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implementation
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uses
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Math, SysUtils, TAChartAxis, TAChartUtils;
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{$R *.lfm}
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function MyFunc(AX: Double): Double;
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begin
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Result := Power(10, AX) + 3;
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end;
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{ TForm1 }
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procedure TForm1.cbAutoChange(Sender: TObject);
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begin
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catTAutoAutoScaleAxisTransform1.Enabled := cbAuto.Checked;
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catTAutoScaleAxisTransform1.Enabled := cbAuto.Checked;
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end;
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procedure TForm1.cbLogChange(Sender: TObject);
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begin
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ChartAxisTransformations1LogarithmAxisTransform1.Enabled := cbLog.Checked;
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end;
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procedure TForm1.ChartLogFuncSeries1Calculate(const AX: Double; out AY: Double);
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begin
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AY := MyFunc(AX);
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end;
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procedure TForm1.FormCreate(Sender: TObject);
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const
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COLORS: array [1..5] of Integer =
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($0000A0, $002080, $004060, $006040, $008020);
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var
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i, j: Integer;
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x: Double;
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ls: TLineSeries;
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tr: TChartAxisTransformations;
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begin
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for i := 0 to 50 do begin
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with cfsLog.Extent do
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x := i / 50 * (XMax - XMin) + XMin;
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clsLogPoints.AddXY(x + Random - 0.5, MyFunc(x) + Random - 0.5);
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end;
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for i := 1 to 5 do begin
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ls := TLineSeries.Create(Self);
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ChartAxisGroup.AddSeries(ls);
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ls.SeriesColor := COLORS[i];
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ls.LinePen.Width := 2;
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for j := 1 to 20 do
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ls.AddXY(j, Random * 8);
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tr := TChartAxisTransformations.Create(Self);
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with TAutoScaleAxisTransform.Create(Self) do begin
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Transformations := tr;
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MinValue := i;
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MaxValue := i + 0.8;
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end;
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with TChartAxis.Create(ChartAxisGroup.AxisList) do begin
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Transformations := tr;
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Marks.AtDataOnly := true;
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Marks.LabelFont.Orientation := 900;
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Marks.LabelFont.Color := COLORS[i];
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TickColor := COLORS[i];
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Group := 1;
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end;
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ls.AxisIndexY := ChartAxisGroup.AxisList.Count - 1;
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end;
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with rcsDates do begin
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XMin := Now - 5 * 365;
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XMax := Now + 5 * 365;
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PointsNumber := 10 * 365 * 24;
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end;
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end;
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procedure TForm1.TChartAxisList1MarkToText(var AText: String; AMark: Double);
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begin
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if AMark < 15 then
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AText := '*' + AText + '*';
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end;
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end.
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