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unit ceLegendDlg;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ButtonPanel,
ExtCtrls, Buttons, ComCtrls,
TAGraph, TALegend,
ceLegendFrame;
type
{ TChartLegendEditor }
TChartLegendEditor = class(TForm)
ButtonPanel: TButtonPanel;
procedure FormCloseQuery(Sender: TObject; var CanClose: boolean);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure OKButtonClick(Sender: TObject);
private
FLegend: TChartLegend;
FLegendFrame: TChartLegendFrame;
FSavedLegend: TChartLegend;
FOKClicked: Boolean;
protected
function GetChart: TChart;
public
procedure Prepare(ALegend: TChartLegend; ACaption: String = '');
end;
var
LegendEditor: TChartLegendEditor;
implementation
{$R *.lfm}
procedure TChartLegendEditor.FormCloseQuery(Sender: TObject; var CanClose: boolean);
begin
if not CanClose then exit;
if not FOKClicked then begin
FLegend.Assign(FSavedLegend);
GetChart.Invalidate;
end;
end;
procedure TChartLegendEditor.FormCreate(Sender: TObject);
begin
FLegendFrame := TChartLegendFrame.Create(self);
FLegendFrame.Parent := self;
FLegendFrame.Name := '';
FLegendFrame.Align := alClient;
FLegendFrame.BorderSpacing.Around := 8;
FLegendFrame.AutoSize := true;
AutoSize := true;
end;
procedure TChartLegendEditor.FormDestroy(Sender: TObject);
begin
FSavedLegend.Free;
end;
procedure TChartLegendEditor.FormShow(Sender: TObject);
begin
FOKClicked := false;
end;
function TChartLegendEditor.GetChart: TChart;
begin
Result := FLegend.GetOwner as TChart;
end;
procedure TChartLegendEditor.OKButtonClick(Sender: TObject);
begin
FOKClicked := true;
end;
procedure TChartLegendEditor.Prepare(ALegend: TChartLegend;
ACaption: String = '');
begin
FLegend := ALegend;
if FSavedLegend = nil then
FSavedLegend := TChartLegend.Create(nil);
FSavedLegend.Assign(ALegend);
if ACaption <> '' then
Caption := ACaption;
FLegendFrame.Prepare(ALegend);
end;
end.
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