// SPDX-License-Identifier: LGPL-3.0-linking-exception
{
  Part of BGRA Controls. Made by third party.
  For detailed information see readme.txt

  Site: https://sourceforge.net/p/bgra-controls/
  Wiki: http://wiki.lazarus.freepascal.org/BGRAControls
  Forum: http://forum.lazarus.freepascal.org/index.php/board,46.0.html
}

unit DTAnalogCommon;

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs,
  BGRABitmap, BGRABitmapTypes;

type
  TDTFillStyle = (fsnone, fsGradient{, fsTexture});

  TDTNeedleStyle = (nsLine, nsTriangle{, nsLineExt, nsTriangleExt});

  { TDTOrigin }

  TDTOrigin = packed record
    CenterPoint: TPoint;
    Radius: integer;
  end;

  { TDTPointerCapSettings }

  TDTPointerCapSettings = class(TPersistent)
  private
    FEdgeColor: TColor;
    FEdgeThickness: integer;
    FFillColor: TColor;
    FOnChange: TNotifyEvent;
    FRadius: integer;
    procedure SetEdgeColor(AValue: TColor);
    procedure SetEdgeThickness(AValue: integer);
    procedure SetFillColor(AValue: TColor);
    procedure SetOnChange(AValue: TNotifyEvent);
    procedure SetRadius(AValue: integer);
  protected
  public
    constructor Create;
    destructor Destroy; override;
    property OnChange: TNotifyEvent read FOnChange write SetOnChange;
  published
    property EdgeColor: TColor read FEdgeColor write SetEdgeColor;
    property FillColor: TColor read FFillColor write SetFillColor;
    property Radius: integer read FRadius write SetRadius;
    property EdgeThickness: integer read FEdgeThickness write SetEdgeThickness;
  end;

  { TDTPointerSettings }

  TDTPointerSettings = class(TPersistent)
  private
    FColor: TColor;
    FLength: integer;
    FOnChange: TNotifyEvent;
    FThickness: integer;
    procedure SetColor(AValue: TColor);
    procedure SetLength(AValue: integer);
    procedure SetOnChange(AValue: TNotifyEvent);
    procedure SetThickness(AValue: integer);
  protected
  public
    constructor Create;
    destructor Destroy; override;
    property OnChange: TNotifyEvent read FOnChange write SetOnChange;
  published
    property Color: TColor read FColor write SetColor;
    property Length: integer read FLength write SetLength;
    property Thickness: integer read FThickness write SetThickness;
  end;

  { TDTNeedleSettings }

  TDTNeedleSettings = class(TPersistent)
  private
    FCapColor: TColor;
    FCapEdgeColor: TColor;
    FCapRadius: integer;
    FNeedleColor: TColor;
    FNeedleLength: integer;
    FNeedleStyle: TDTNeedleStyle;
    FOnChange: TNotifyEvent;
    procedure SetCapColor(AValue: TColor);
    procedure SetCapEdgeColor(AValue: TColor);
    procedure SetCapRadius(AValue: integer);
    procedure SetNeedleColor(AValue: TColor);
    procedure SetNeedleLength(AValue: integer);
    procedure SetNeedleStyle(AValue: TDTNeedleStyle);
    procedure SetOnChange(AValue: TNotifyEvent);
  protected
  public
    constructor Create;
    destructor Destroy; override;
    property OnChange: TNotifyEvent read FOnChange write SetOnChange;
    property NeedleStyle: TDTNeedleStyle read FNeedleStyle write SetNeedleStyle;
  published
    property NeedleColor: TColor read FNeedleColor write SetNeedleColor;
    property NeedleLength: integer read FNeedleLength write SetNeedleLength;
    property CapRadius: integer read FCapRadius write SetCapRadius;
    property CapColor: TColor read FCapColor write SetCapColor;
    property CapEdgeColor: TColor read FCapEdgeColor write SetCapEdgeColor;
  end;

  { TDTScaleSettings }

  TDTScaleSettings = class(TPersistent)
  private
    FEnableScaleText: boolean;
    FMaximum: integer;
    FTesting: boolean;
    FTextFont: string;
    FTextRadius: integer;
    FTextSize: integer;
    FTickColor: TColor;
    FEnableMainTicks: boolean;
    FEnableRangeIndicator: boolean;
    FEnableSubTicks: boolean;
    FLengthMainTick: integer;
    FLengthSubTick: integer;
    FMainTickCount: integer;
    FMinimum: integer;
    FOnChange: TNotifyEvent;
    FSubTickCount: integer;
    FTextColor: TColor;
    FThicknessMainTick: integer;
    FThicknessSubTick: integer;
    FAngle: integer;
    procedure SetEnableScaleText(AValue: boolean);
    procedure SetFAngle(AValue: integer);
    procedure SetMaximum(AValue: integer);
    procedure SetTesting(AValue: boolean);
    procedure SetTextFont(AValue: string);
    procedure SetTextRadius(AValue: integer);
    procedure SetTextSize(AValue: integer);
    procedure SetTickColor(AValue: TColor);
    procedure SetEnableMainTicks(AValue: boolean);
    procedure SetEnableRangeIndicator(AValue: boolean);
    procedure SetEnableSubTicks(AValue: boolean);
    procedure SetLengthMainTick(AValue: integer);
    procedure SetLengthSubTick(AValue: integer);
    procedure SetMainTickCount(AValue: integer);
    procedure SetOnChange(AValue: TNotifyEvent);
    procedure SetSubTickCount(AValue: integer);
    procedure SetTextColor(AValue: TColor);
    procedure SetThicknessMainTick(AValue: integer);
    procedure SetThicknessSubTick(AValue: integer);
  protected
    property Testing: boolean read FTesting write SetTesting;
  public
    constructor Create;
    destructor Destroy; override;
    property OnChange: TNotifyEvent read FOnChange write SetOnChange;
  published
    property TickColor: TColor read FTickColor write SetTickColor;
    property TextColor: TColor read FTextColor write SetTextColor;
    property TextSize: integer read FTextSize write SetTextSize;
    property TextFont: string read FTextFont write SetTextFont;
    property EnableMainTicks: boolean read FEnableMainTicks write SetEnableMainTicks;
    property EnableSubTicks: boolean read FEnableSubTicks write SetEnableSubTicks;
    property EnableScaleText: boolean read FEnableScaleText write SetEnableScaleText;
    property Maximum: integer read FMaximum write SetMaximum;
    property MainTickCount: integer read FMainTickCount write SetMainTickCount;
    property SubTickCount: integer read FSubTickCount write SetSubTickCount;
    property LengthMainTick: integer read FLengthMainTick write SetLengthMainTick;
    property LengthSubTick: integer read FLengthSubTick write SetLengthSubTick;
    property ThicknessMainTick: integer read FThicknessMainTick write SetThicknessMainTick;
    property ThicknessSubTick: integer read FThicknessSubTick write SetThicknessSubTick;
    property TextRadius: integer read FTextRadius write SetTextRadius;
    property Angle: integer read FAngle write SetFAngle;
    property EnableRangeIndicator: boolean read FEnableRangeIndicator write SetEnableRangeIndicator;
    //property RangeMinValue: integer read FRangeMinValue write SetRangeMinValue;
    //property RangeMidValue: integer read FRangeMidValue write SetRangeMidValue;
    //property RangeMaxValue: integer read FRangeMaxValue write SetRangeMaxValue;
    //property RangeMinColor: TColor read FRangeMinColor write SetRangeMinColor;
    //property RangeMidColor: TColor read FRangeMidColor write SetRangeMidColor;
    //property RangeMaxColor: TColor read FRangeMaxColor write SetRangeMaxColor;
  end;

  { TDTFaceSettings }

  TDTFaceSettings = class(TPersistent)
  private
    FColorEnd: TColor;
    FColorFrame: TColor;
    FColorStart: TColor;
    FFillStyle: TDTFillStyle;
    FOnChange: TNotifyEvent;
    procedure SetColorEnd(AValue: TColor);
    procedure SetColorFrame(AValue: TColor);
    procedure SetColorStart(AValue: TColor);
    procedure SetFillStyle(AValue: TDTFillStyle);
    procedure SetOnChange(AValue: TNotifyEvent);
  protected
  public
    constructor Create;
    destructor Destroy; override;
    property OnChange: TNotifyEvent read FOnChange write SetOnChange;
  published
    property FillStyle: TDTFillStyle read FFillStyle write SetFillStyle;
    property ColorFrame: TColor read FColorFrame write SetColorFrame;
    property ColorStart: TColor read FColorStart write SetColorStart;
    property ColorEnd: TColor read FColorEnd write SetColorEnd;
  end;

  { TDTBaseAnalogDevice }

  TDTBaseAnalogDevice = class(TGraphicControl)
  private
    FFaceSettings: TDTFaceSettings;
    FScaleSettings: TDTScaleSettings;
    procedure SetFaceSettings(AValue: TDTFaceSettings);
    procedure SetScaleSettings(AValue: TDTScaleSettings);
  protected
    procedure DoChange({%H-}Sender: TObject);
  public
    fGaugeBitmap: TBGRABitmap;
    FFrameBitmap: TBGRABitmap;
    FFaceBitmap: TBGRABitmap;
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    property FaceSettings: TDTFaceSettings read FFaceSettings write SetFaceSettings;
    property ScaleSettings: TDTScaleSettings read FScaleSettings write SetScaleSettings;
    procedure Paint; override;
    procedure DrawGauge;
    procedure DrawFrame;
    procedure DrawFace;
  end;

function Initializebitmap(var Bitmap: TBGRABitmap; Width, Height: integer): TDTOrigin;

implementation

function Initializebitmap(var Bitmap: TBGRABitmap; Width, Height: integer): TDTOrigin;
begin

  Bitmap.SetSize(Width, Height);

  // Clear bitmap to transparent
  BitMap.Fill(BGRA(0, 0, 0, 0));

  // Get origin information
  Result.CenterPoint.x := Width div 2;
  Result.CenterPoint.y := Height div 2;

  Result.Radius := Result.CenterPoint.y;

  if Result.CenterPoint.x > Result.CenterPoint.y then
    Result.Radius := Result.CenterPoint.y;

  if Result.CenterPoint.x < Result.CenterPoint.y then
    Result.Radius := Result.CenterPoint.x;

end;

{ TDTPointerCapSettings }

procedure TDTPointerCapSettings.SetEdgeColor(AValue: TColor);
begin
  if FEdgeColor = AValue then
    Exit;
  FEdgeColor := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTPointerCapSettings.SetEdgeThickness(AValue: integer);
begin
  if FEdgeThickness = AValue then
    Exit;
  FEdgeThickness := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTPointerCapSettings.SetFillColor(AValue: TColor);
begin
  if FFillColor = AValue then
    Exit;
  FFillColor := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTPointerCapSettings.SetOnChange(AValue: TNotifyEvent);
begin
  if FOnChange = AValue then
    Exit;
  FOnChange := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTPointerCapSettings.SetRadius(AValue: integer);
begin
  if FRadius = AValue then
    Exit;
  FRadius := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

constructor TDTPointerCapSettings.Create;
begin
  FEdgeColor := $00CCDCDC;
  FFillColor := $003F3F3F;
  FRadius := 10;
  FEdgeThickness := 1;
end;

destructor TDTPointerCapSettings.Destroy;
begin
  inherited Destroy;
end;

{ TDTPointerSettings }

procedure TDTPointerSettings.SetColor(AValue: TColor);
begin
  if FColor = AValue then
    Exit;
  FColor := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTPointerSettings.SetLength(AValue: integer);
begin
  if FLength = AValue then
    Exit;
  FLength := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTPointerSettings.SetOnChange(AValue: TNotifyEvent);
begin
  if FOnChange = AValue then
    Exit;
  FOnChange := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTPointerSettings.SetThickness(AValue: integer);
begin
  if FThickness = AValue then
    Exit;
  FThickness := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

constructor TDTPointerSettings.Create;
begin
  FColor := BGRA(199, 199, 173);
  FLength := 100;
  FThickness := 3;
end;

destructor TDTPointerSettings.Destroy;
begin
  inherited Destroy;
end;

{ TDTBaseAnalogDevice }

procedure TDTBaseAnalogDevice.SetFaceSettings(AValue: TDTFaceSettings);
begin
  if FFaceSettings = AValue then
    Exit;
  FFaceSettings := AValue;

  DoChange(self);
end;

procedure TDTBaseAnalogDevice.SetScaleSettings(AValue: TDTScaleSettings);
begin
  if FScaleSettings = AValue then
    Exit;
  FScaleSettings := AValue;

  DoChange(self);
end;

procedure TDTBaseAnalogDevice.DoChange(Sender: TObject);
begin
  Invalidate;
end;

constructor TDTBaseAnalogDevice.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);

  Width := 240;
  Height := 240;

  FScaleSettings := TDTScaleSettings.Create;
  ScaleSettings.OnChange := @DoChange;

  ScaleSettings.TextRadius := round((Width * 0.6) / 2);

  FFaceSettings := TDTFaceSettings.Create;
  FaceSettings.OnChange := @DoChange;

  FGaugeBitmap := TBGRABitmap.Create;
  FFaceBitmap := TBGRABitmap.Create;
  FFrameBitmap := TBGRABitmap.Create;

end;

destructor TDTBaseAnalogDevice.Destroy;
begin
  FScaleSettings.Free;
  FFaceSettings.Free;

  fGaugeBitmap.Free;
  FFaceBitmap.Free;
  FFrameBitmap.Free;
  inherited Destroy;
end;

procedure TDTBaseAnalogDevice.Paint;
begin
  inherited Paint;
  FGaugeBitmap.Fill(BGRA(0, 0, 0, 0));

  fGaugeBitmap.SetSize(Width, Height);

  DrawGauge;

  FGaugeBitmap.BlendImage(0, 0, FFrameBitmap, boLinearBlend);
  FGaugeBitmap.BlendImage(0, 0, FFaceBitmap, boLinearBlend);

  FGaugeBitmap.Draw(Canvas, 0, 0, False);

end;

procedure TDTBaseAnalogDevice.DrawGauge;
begin
  DrawFrame;
  DrawFace;
end;

procedure TDTBaseAnalogDevice.DrawFrame;
var
  Origin: TDTOrigin;
  r: integer;
begin

  Origin := Initializebitmap(FFrameBitmap, Width, Height);

  r := round(Origin.Radius * 0.95);

  // Draw Bitmap frame
  FFrameBitmap.FillEllipseAntialias(Origin.CenterPoint.x,
    Origin.CenterPoint.y,
    r, r, FFaceSettings.ColorFrame);

  // Draw thin antialiased border to smooth against background
  FFrameBitmap.EllipseAntialias(Origin.CenterPoint.x,
    Origin.CenterPoint.y,
    r, r, ColorToBGRA(clBlack, 120), 1);

end;

procedure TDTBaseAnalogDevice.DrawFace;
var
  Origin: TDTOrigin;
  r: integer;
begin

  Origin := Initializebitmap(FFaceBitmap, Width, Height);

  r := round(Origin.Radius * 0.95) - 5;

  case FFaceSettings.FillStyle of
    fsGradient:
      FFaceBitmap.FillEllipseLinearColorAntialias(Origin.CenterPoint.x, Origin.CenterPoint.y, r, r, ColorToBGRA(FFaceSettings.ColorStart), ColorToBGRA(FFaceSettings.ColorEnd));
    fsnone:
      FFaceBitmap.FillEllipseAntialias(Origin.CenterPoint.x, Origin.CenterPoint.y, r, r, FFaceSettings.ColorStart);
  end;

end;

{ TDTNeedleSettings }

procedure TDTNeedleSettings.SetCapColor(AValue: TColor);
begin
  if FCapColor = AValue then
    Exit;
  FCapColor := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTNeedleSettings.SetCapEdgeColor(AValue: TColor);
begin
  if FCapEdgeColor = AValue then
    Exit;
  FCapEdgeColor := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTNeedleSettings.SetCapRadius(AValue: integer);
begin
  if FCapRadius = AValue then
    Exit;
  FCapRadius := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTNeedleSettings.SetNeedleColor(AValue: TColor);
begin
  if FNeedleColor = AValue then
    Exit;
  FNeedleColor := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTNeedleSettings.SetNeedleLength(AValue: integer);
begin
  if FNeedleLength = AValue then
    Exit;
  FNeedleLength := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTNeedleSettings.SetNeedleStyle(AValue: TDTNeedleStyle);
begin
  if FNeedleStyle = AValue then
    Exit;
  FNeedleStyle := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTNeedleSettings.SetOnChange(AValue: TNotifyEvent);
begin
  if FOnChange = AValue then
    Exit;
  FOnChange := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

constructor TDTNeedleSettings.Create;
begin
  FCapColor := BGRA(63, 63, 63);
  FCapEdgeColor := BGRA(220, 220, 204);
  FCapRadius := 10;

  FNeedleStyle := nsLine;
  FNeedleColor := BGRA(255, 81, 81);
  FNeedleLength := 100;
end;

destructor TDTNeedleSettings.Destroy;
begin
  inherited Destroy;
end;

{ TDTScaleSettings }

constructor TDTScaleSettings.Create;
begin
  FTickColor := bgra(223, 196, 125);
  FTextColor := bgra(140, 208, 211);
  FTextFont := 'Calibri';
  FTextSize := 15;
  FEnableMainTicks := True;
  FEnableSubTicks := True;
  FEnableScaleText := True;
  FMainTickCount := 10;
  FSubTickCount := 5;
  FMaximum := 100;
  FMinimum := 0;
  FLengthMainTick := 15;
  FLengthSubTick := 8;
  FThicknessMainTick := 3;
  FThicknessSubTick := 1;
  FAngle := 300;
  FEnableRangeIndicator := True;
end;

destructor TDTScaleSettings.Destroy;
begin
  inherited Destroy;
end;

procedure TDTScaleSettings.SetTextFont(AValue: string);
begin
  if FTextFont = AValue then
    Exit;
  FTextFont := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetEnableScaleText(AValue: boolean);
begin
  if FEnableScaleText = AValue then
    Exit;
  FEnableScaleText := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetFAngle(AValue: integer);
begin
  if FAngle=AValue then Exit;
  FAngle:=AValue;
end;

procedure TDTScaleSettings.SetMaximum(AValue: integer);
begin
  if FMaximum = AValue then
    Exit;
  FMaximum := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetTesting(AValue: boolean);
begin
  if FTesting = AValue then
    Exit;
  FTesting := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetTextRadius(AValue: integer);
begin
  if FTextRadius = AValue then
    Exit;
  FTextRadius := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetTextSize(AValue: integer);
begin
  if FTextSize = AValue then
    Exit;
  FTextSize := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetTickColor(AValue: TColor);
begin
  if FTickColor = AValue then
    Exit;
  FTickColor := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetEnableMainTicks(AValue: boolean);
begin
  if FEnableMainTicks = AValue then
    Exit;
  FEnableMainTicks := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetEnableRangeIndicator(AValue: boolean);
begin
  if FEnableRangeIndicator = AValue then
    Exit;
  FEnableRangeIndicator := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetEnableSubTicks(AValue: boolean);
begin
  if FEnableSubTicks = AValue then
    Exit;
  FEnableSubTicks := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetLengthMainTick(AValue: integer);
begin
  if FLengthMainTick = AValue then
    Exit;
  FLengthMainTick := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetLengthSubTick(AValue: integer);
begin
  if FLengthSubTick = AValue then
    Exit;
  FLengthSubTick := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetMainTickCount(AValue: integer);
begin
  if FMainTickCount = AValue then
    Exit;
  FMainTickCount := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetOnChange(AValue: TNotifyEvent);
begin
  if FOnChange = AValue then
    Exit;
  FOnChange := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetSubTickCount(AValue: integer);
begin
  if FSubTickCount = AValue then
    Exit;
  FSubTickCount := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetTextColor(AValue: TColor);
begin
  if FTextColor = AValue then
    Exit;
  FTextColor := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetThicknessMainTick(AValue: integer);
begin
  if FThicknessMainTick = AValue then
    Exit;
  FThicknessMainTick := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTScaleSettings.SetThicknessSubTick(AValue: integer);
begin
  if FThicknessSubTick = AValue then
    Exit;
  FThicknessSubTick := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

{ TDTFaceSettings }

constructor TDTFaceSettings.Create;
begin
  FColorFrame := BGRA(35, 35, 35);
  FColorStart := BGRA(63, 63, 63);
  FColorEnd := BGRA(93, 93, 93);
  FFillStyle := fsGradient;
end;

destructor TDTFaceSettings.Destroy;
begin
  inherited Destroy;
end;

procedure TDTFaceSettings.SetColorEnd(AValue: TColor);
begin
  if FColorEnd = AValue then
    Exit;
  FColorEnd := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTFaceSettings.SetColorFrame(AValue: TColor);
begin
  if FColorFrame = AValue then
    Exit;
  FColorFrame := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTFaceSettings.SetColorStart(AValue: TColor);
begin
  if FColorStart = AValue then
    Exit;
  FColorStart := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTFaceSettings.SetFillStyle(AValue: TDTFillStyle);
begin
  if FFillStyle = AValue then
    Exit;
  FFillStyle := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

procedure TDTFaceSettings.SetOnChange(AValue: TNotifyEvent);
begin
  if FOnChange = AValue then
    Exit;
  FOnChange := AValue;

  if Assigned(FOnChange) then
    FOnChange(Self);
end;

{ TDTBackGround }

end.