unit Unit1; 

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, LCLIntf, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
  StdCtrls, ExtCtrls, ComCtrls, Spin,
  RichMemo, RichMemoRTF;

type

  { TForm1 }

  TForm1 = class(TForm)
    Button1: TButton;
    Button10: TButton;
    Button11: TButton;
    Button12: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Button6: TButton;
    Button7: TButton;
    Button8: TButton;
    Button9: TButton;
    Label3: TLabel;
    StartIdent: TFloatSpinEdit;
    FontDialog1: TFontDialog;
    Label1: TLabel;
    Label2: TLabel;
    OpenDialog1: TOpenDialog;
    RichMemo1: TRichMemo;
    SaveDialog1: TSaveDialog;
    OffsetIdent: TFloatSpinEdit;
    procedure Button10Click(Sender: TObject);
    procedure Button11Click(Sender: TObject);
    procedure Button12Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
    procedure Button7Click(Sender: TObject);
    procedure Button8Click(Sender: TObject);
    procedure Button9Click(Sender: TObject);
    procedure RichMemo1MouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure StartIdentChange(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure RichMemo1Change(Sender: TObject);
    procedure RichMemo1KeyUp(Sender: TObject; var Key: Word; Shift: TShiftState
      );
  private
    { private declarations }
    procedure ParaMetricRead;
  public
    { public declarations }
  end; 
  
var
  Form1: TForm1; 

implementation

{ TForm1 }

procedure TForm1.Button1Click(Sender: TObject);
var
  fp   :  TFontParams;
begin
  Caption := Format('sel start %d,  sel length %d', [RichMemo1.SelStart, RichMemo1.SelLength]);
  RichMemo1.GetTextAttributes(RichMemo1.SelStart, fp);
  fp.Color := clRed;
  fp.Style := [fsBold];
  RichMemo1.SetTextAttributes(RichMemo1.SelStart, RichMemo1.SelLength, fp);
end;

procedure TForm1.Button10Click(Sender: TObject);
begin
  RichMemo1.SetParaAlignment( RichMemo1.SelStart, RichMemo1.SelLength, paJustify);
end;

procedure TForm1.Button11Click(Sender: TObject);
var
  Num : TParaNumbering;
begin
  Num.Numbering:=TParaNumStyle(1);
  RichMemo1.SetParaNumbering(RichMemo1.SelStart, RichMEmo1.SelLength, Num);
end;

procedure TForm1.Button12Click(Sender: TObject);
var
  Num : TParaNumbering;
begin
  Num.Numbering:=TParaNumStyle(2);
  RichMemo1.SetParaNumbering(RichMemo1.SelStart, RichMEmo1.SelLength, Num);
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  prm : TFontParams;
begin
  if RichMemo1.GetTextAttributes( RichMemo1.SelStart, prm) then begin
    RichMemo1.Lines.Add('name   '+ prm.Name);
    RichMemo1.Lines.Add('size   '+ IntToStr(prm.Size));
    RichMemo1.Lines.Add('color  '+ IntToHex(Integer(prm.Color), 8));
    RichMemo1.Lines.Add('style  '+ IntToHex(Integer(prm.Style), 8));
  end else
    RichMemo1.Lines.Add('failed');
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  if Fontdialog1.Execute then begin
    RichMemo1.SetTextAttributes(
      RichMemo1.SelStart, RichMemo1.SelLength, FontDialog1.Font);
  end;
end;

procedure TForm1.Button4Click(Sender: TObject);
var
  fs : TFileStream;
begin
  if SaveDialog1.Execute then begin
    fs := nil;
    try
      fs := TFileStream.Create( Utf8ToAnsi(SaveDialog1.FileName), fmCreate);
      RichMemo1.SaveRichText(fs);
    except
    end;
    fs.Free;
  end;
end;

procedure TForm1.Button5Click(Sender: TObject);
var
  fs : TFileStream;
  tm : longWord;
begin
  if OpenDialog1.Execute then begin
    fs := nil;
    try
      // Utf8ToAnsi is required for windows
      fs := TFileStream.Create(Utf8ToAnsi(OpenDialog1.FileName), fmOpenRead or fmShareDenyNone);
      RichMemo1.LoadRichText(fs);
    except
    end;
    fs.Free;
  end;
end;

procedure TForm1.Button6Click(Sender: TObject);
var
  ofs, len  : Integer;
begin
  RichMemo1.GetStyleRange( RichMemo1.SelStart, ofs, len );
  if (ofs = RichMEmo1.SelStart) and (len = RichMemo1.SelLength) then begin
    ofs := ofs + len;
    RichMemo1.GetStyleRange( ofs, ofs, len );
  end;
  RichMemo1.SelStart := ofs;
  RichMemo1.SelLength := len;
end;

procedure TForm1.Button7Click(Sender: TObject);
begin
  RichMemo1.SetParaAlignment( RichMemo1.SelStart, RichMemo1.SelLength, paLeft);
end;

procedure TForm1.Button8Click(Sender: TObject);
begin
  RichMemo1.SetParaAlignment( RichMemo1.SelStart, RichMemo1.SelLength, paCenter);
end;

procedure TForm1.Button9Click(Sender: TObject);
begin
  RichMemo1.SetParaAlignment( RichMemo1.SelStart, RichMemo1.SelLength, paRight);
end;

procedure TForm1.RichMemo1MouseUp(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  ParaMetricRead;
end;

procedure TForm1.StartIdentChange(Sender: TObject);
var
  m: TParaMetric;
begin
  RichMemo1.GetParaMetric(RichMemo1.SelStart, m);

  m.FirstLine:=StartIdent.Value;
  m.HeadIndent:=OffsetIdent.Value;

  RichMemo1.SetParaMetric(RichMemo1.SelStart, RichMemo1.SelLength, m);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  RegisterRTFLoader;
end;

procedure TForm1.RichMemo1Change(Sender: TObject);
begin
  Caption := Caption + '.';
  if length(CAption)>20 then Caption:='';
end;

procedure TForm1.RichMemo1KeyUp(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  ParaMetricRead;
  Label3.Caption:='Sel start: '+IntToStr(RichMemo1.SelStart);
end;

procedure TForm1.ParaMetricRead;
var
  m: TParaMetric;
begin
  RichMemo1.GetParaMetric(RichMemo1.SelStart, m);
  StartIdent.OnChange:=nil;
  OffsetIdent.OnChange:=nil;

  StartIdent.Value:=m.FirstLine;
  OffsetIdent.Value:=m.HeadIndent;

  StartIdent.OnChange:=@StartIdentChange;
  OffsetIdent.OnChange:=@StartIdentChange;
end;

initialization
  {$I unit1.lrs}

end.