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unit main;
{$mode objfpc}{$H+}
interface
uses
Classes, ExtCtrls, StdCtrls, SysUtils, FileUtil, LResources, Forms, Controls,
Graphics, Dialogs, Types, TAFuncSeries, TAGraph, TASeries, TASources, TATools;
type
{ TForm1 }
TForm1 = class(TForm)
Chart1: TChart;
Chart1BarSeries1: TBarSeries;
ChartLine2: TConstantLine;
ChartLine1: TConstantLine;
Chart1FuncSeries1: TFuncSeries;
ChartToolset1: TChartToolset;
ChartToolset1DataPointCrosshairTool1: TDataPointCrosshairTool;
ChartToolset1DataPointDragTool1: TDataPointDragTool;
ChartToolset1PanAny: TPanDragTool;
ChartToolset1PanClickTool1: TPanClickTool;
ChartToolset1PanHor: TPanDragTool;
ChartToolset1PanMouseWheelTool1: TPanMouseWheelTool;
ChartToolset1PanVert: TPanDragTool;
ChartToolset1ZoomDragTool1: TZoomDragTool;
ChartToolset1ZoomMouseWheelTool1: TZoomMouseWheelTool;
ChartToolset1ZoomOut: TZoomClickTool;
ChartToolset1ZoomIn: TZoomClickTool;
cbFixedPoint: TCheckBox;
cbAnimate: TCheckBox;
Panel1: TPanel;
Panel2: TPanel;
rgZoom: TRadioGroup;
RandomChartSource1: TRandomChartSource;
rgPan: TRadioGroup;
procedure cbAnimateClick(Sender: TObject);
procedure cbFixedPointChange(Sender: TObject);
procedure Chart1FuncSeries1Calculate(const AX: Double; out AY: Double);
procedure ChartToolset1DataPointCrosshairTool1AfterKeyUp(ATool: TChartTool;
APoint: TPoint);
procedure ChartToolset1DataPointCrosshairTool1Draw(
ASender: TDataPointCrosshairTool);
procedure ChartToolset1DataPointDragTool1BeforeMouseMove(ATool: TChartTool;
APoint: TPoint);
procedure rgPanClick(Sender: TObject);
procedure rgZoomClick(Sender: TObject);
end;
var
Form1: TForm1;
implementation
uses
Math, TAChartUtils;
{$R *.lfm}
{ TForm1 }
procedure TForm1.cbAnimateClick(Sender: TObject);
var
t: TChartTool;
begin
for t in ChartToolset1.Tools do
if t is TBasicZoomTool then
(t as TBasicZoomTool).AnimationSteps := IfThen(cbAnimate.Checked, 3, 0);
end;
procedure TForm1.cbFixedPointChange(Sender: TObject);
var
t: TChartTool;
begin
for t in ChartToolset1.Tools do
if t is TBasicZoomStepTool then
(t as TBasicZoomStepTool).FixedPoint := cbFixedPoint.Checked;
end;
procedure TForm1.Chart1FuncSeries1Calculate(const AX: Double; out AY: Double);
begin
AY := Sin(AX * 10) + 0.7 * Cos(AX * 30) + 0.3 * Sin(AX * 80);
end;
procedure TForm1.ChartToolset1DataPointCrosshairTool1AfterKeyUp(
ATool: TChartTool; APoint: TPoint);
begin
Unused(ATool, APoint);
ChartToolset1DataPointCrosshairTool1.Hide;
end;
procedure TForm1.ChartToolset1DataPointCrosshairTool1Draw(
ASender: TDataPointCrosshairTool);
const
R = 20;
begin
with Chart1.GraphToImage(ASender.Position) do
Chart1.Drawer.Ellipse(X - R, Y - R, X + R, Y + R);
end;
procedure TForm1.ChartToolset1DataPointDragTool1BeforeMouseMove(
ATool: TChartTool; APoint: TPoint);
const
D = 10;
begin
with ATool as TDataPointDragTool do begin
if
(Series = ChartLine1) and
(APoint.X > Chart1.XGraphToImage(ChartLine2.Position) - D) or
(Series = ChartLine2) and
(APoint.X < Chart1.XGraphToImage(ChartLine1.Position) + D)
then
Handled;
end;
end;
procedure TForm1.rgPanClick(Sender: TObject);
var
i: Integer;
begin
i := rgPan.ItemIndex;
ChartToolset1PanAny.Enabled := i = 0;
ChartToolset1PanHor.Enabled := i = 1;
ChartToolset1PanVert.Enabled := i = 1;
ChartToolset1PanClickTool1.Enabled := i in [2, 3];
ChartToolset1PanClickTool1.Interval := IfThen(i = 2, 0, 200);
with ChartToolset1PanMouseWheelTool1 do begin
Enabled := i in [4, 5];
if i = 4 then
WheelUpDirection := pdUp
else
WheelUpDirection := pdRight;
end;
end;
procedure TForm1.rgZoomClick(Sender: TObject);
var
t: TChartTool;
begin
for t in ChartToolset1.Tools do
if Pos('Zoom', t.Name) > 0 then
t.Enabled := false;
case rgZoom.ItemIndex of
0: begin
ChartToolset1ZoomDragTool1.Enabled := true;
ChartToolset1ZoomDragTool1.RatioLimit := zrlNone;
end;
1: begin
ChartToolset1ZoomDragTool1.Enabled := true;
ChartToolset1ZoomDragTool1.RatioLimit := zrlProportional
end;
2: begin
ChartToolset1ZoomIn.Enabled := true;
ChartToolset1ZoomOut.Enabled := true;
end;
3: begin
ChartToolset1ZoomMouseWheelTool1.Enabled := true;
end;
end;
end;
end.
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