lazarus/components/tachart/demo/lazreport/Main.pas

unit Main; 

{$mode objfpc}{$H+}

interface

uses
  Classes, ExtCtrls, LR_Class, StdCtrls, SysUtils,
  Forms, Controls, Graphics, TAGraph, TASeries, TASources;

type

  { TForm1 }

  TForm1 = class(TForm)
    btnShowReport: TButton;
    Chart1: TChart;
    Chart1BarSeries1: TBarSeries;
    frReport1: TfrReport;
    ListChartSource1: TListChartSource;
    Panel1: TPanel;
    procedure btnShowReportClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure frReport1EnterRect(Memo: TStringList; View: TfrView);
  end;

var
  Form1: TForm1; 

implementation

{$R *.lfm}

{ TForm1 }

procedure TForm1.btnShowReportClick(Sender: TObject);
begin
  frReport1.ShowReport;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  frReport1.LoadFromFile('chart.lrf');
end;

procedure TForm1.frReport1EnterRect(Memo: TStringList; View: TfrView);
var
  bmp: TBitmap;
  pv: TfrPictureView;
begin
  if Memo.Count = 0 then exit;
  if (Memo[0] = 'Chart1') and (View is TfrPictureView) then begin
    pv := View as TfrPictureView;
    bmp := TBitmap.Create;
    try
      bmp.Width := Round(pv.Width);
      bmp.Height := Round(pv.Height);
      Chart1.PaintOnCanvas(
        bmp.Canvas, Rect(0, 0, bmp.Width, bmp.Height));
      pv.Picture.Bitmap.Assign(bmp);
    finally
      bmp.Free;
    end;
  end;
end;

end.