GLScene/Source/FRTrackBarEdit.pas

//
// The graphics rendering engine GLScene http://glscene.org
//

unit FRTrackBarEdit;

(* Frame combining a TrackBar and an Edit. *)

interface

{$I GLScene.inc}

uses
  System.Classes, 
  System.SysUtils,
  VCL.Forms, 
  VCL.StdCtrls, 
  VCL.ComCtrls, 
  VCL.Controls;

type
  TRTrackBarEdit = class(TFrame)
    TrackBar: TTrackBar;
    Edit: TEdit;
    procedure TrackBarChange(Sender: TObject);
    procedure EditChange(Sender: TObject);
  private
    procedure SetValue(const val : Integer);
    function GetValue : Integer;
    procedure SetValueMin(const val : Integer);
    function GetValueMin : Integer;
    procedure SetValueMax(const val : Integer);
    function GetValueMax : Integer;
  public
    property Value : Integer read GetValue write SetValue;
    property ValueMin : Integer read GetValueMin write SetValueMin;
    property ValueMax : Integer read GetValueMax write SetValueMax;
  end;

//---------------------------------------------------------------------
implementation
//---------------------------------------------------------------------

{$R *.dfm}

procedure TRTrackBarEdit.TrackBarChange(Sender: TObject);
begin
   Edit.Text:=IntToStr(TrackBar.Position);
end;

procedure TRTrackBarEdit.EditChange(Sender: TObject);
var
   i : Integer;
begin
   try
      i:=StrToInt(Edit.Text);
      TrackBar.Position:=i;
   except
      // ignore
   end;
end;

procedure TRTrackBarEdit.SetValue(const val : Integer);
begin
   TrackBar.Position:=val;
   TrackBarChange(Self);
end;

function TRTrackBarEdit.GetValue : Integer;
begin
   Result:=TrackBar.Position;
end;

procedure TRTrackBarEdit.SetValueMax(const val : Integer);
begin
   TrackBar.Max:=val;
   TrackBarChange(Self);
end;

function TRTrackBarEdit.GetValueMax : Integer;
begin
   Result:=TrackBar.Max;
end;

procedure TRTrackBarEdit.SetValueMin(const val : Integer);
begin
   TrackBar.Min:=val;
   TrackBarChange(Self);
end;

function TRTrackBarEdit.GetValueMin : Integer;
begin
   Result:=TrackBar.Min;
end;

end.