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unit noten;

interface

uses
  SysUtils, Classes, Controls, Graphics;

type
  TNotes = class(TGraphicControl)
  private
    { Private-Deklarationen }
    FLines  : Integer;
    procedure SetLines(Value: Integer);
  protected
    { Protected-Deklarationen }
    procedure Paint; override;
  public
    { Public-Deklarationen }
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
  published
    { Published-Deklarationen }
    property Lines:   Integer   read FLines     write SetLines;
  end;

procedure Register;


implementation

//------------------------------------------------------------------------------

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

  FLines := 0;
end;
//------------------------------------------------------------------------------

destructor TNotes.Destroy;
begin
  inherited Destroy;
end;
//------------------------------------------------------------------------------

procedure TNotes.SetLines(Value: Integer);
begin
  if FLines <> Value then
  begin
    FLines := Value;
    Invalidate;
  end;
end;

//------------------------------------------------------------------------------

procedure TNotes.Paint;
var
  LineCount: Integer;
  count: Integer;
  hl: Integer;
  ho, hu: Integer;
begin

  LineCount := Lines;
  //Wenn sich die Komponente in Entwicklung befindet
  if csDesigning in ComponentState then
  begin
    // Notenlinien Zeichen Violin- / Bassschlüssel

    hl := 10;
    ho := 10;
    hu := 130;

    for count := 1 to Linecount do
    begin
    Canvas.Pen.Width := 3;
    Canvas.MoveTo(Width - (Width - 10), Height - (Height - ho));
    Canvas.LineTo(Width - (Width - 10), Height - (Height - hu));

    Canvas.Pen.Width := 1;

    Canvas.MoveTo(width - (width-15), Height - (Height - ho));
    Canvas.LineTo(width - (width-15), Height - (Height - hu));
    // Linie 1 Violin
    Canvas.MoveTo(width - (width-10), Height - (Height - hl));
    Canvas.LineTo(width - 10, Height - (Height - hl));
    // Linie 2 Violin
    Canvas.MoveTo(width - (width-10), Height - (Height - hl - 10));
    Canvas.LineTo(width - 10, Height - (Height - hl - 10));
    // Linie 3 Violin
    Canvas.MoveTo(width - (width-10), Height - (Height - hl-20));
    Canvas.LineTo(width - 10, Height - (Height - hl-20));
    // Linie 4 Violin
    Canvas.MoveTo(width - (width-10), Height - (Height - hl-30));
    Canvas.LineTo(width - 10, Height - (Height - hl-30));
    // Linie 5 Violin
    Canvas.MoveTo(width - (width-10), Height - (Height - hl-40));
    Canvas.LineTo(width - 10, Height - (Height - hl-40));
    // Linie 1 Bass
    Canvas.MoveTo(width - (width-10), Height - (Height - hl-80));
    Canvas.LineTo(width - 10, Height - (Height - hl-80));
    // Linie 2 Bass
    Canvas.MoveTo(width - (width-10), Height - (Height - hl-90));
    Canvas.LineTo(width - 10, Height - (Height - hl-90));;
    // Linie 3 Bass
    Canvas.MoveTo(width - (width-10), Height - (Height - hl-100));
    Canvas.LineTo(width - 10, Height - (Height - hl-100));
    // Linie 4 Bass
    Canvas.MoveTo(width - (width-10), Height - (Height - hl-110));
    Canvas.LineTo(width - 10, Height - (Height - hl-110));
    // Linie 5 Bass
    Canvas.MoveTo(width - (width-10), Height - (Height - hl-120));
    Canvas.LineTo(width - 10, Height - (Height - hl-120));

    Canvas.MoveTo(width - 15, Height - (Height - ho));
    Canvas.LineTo(width - 15, Height - (Height - hu));

    Canvas.Pen.Width := 3;
    Canvas.MoveTo(width - 10, Height - (Height - ho));
    Canvas.LineTo(width - 10, Height - (Height - hu));

    hl :=  hl + 150;
    ho :=  ho + 150;
    hu :=  hu + 150;
    end;

  end;
end;
//------------------------------------------------------------------------------

procedure Register;
begin
  RegisterComponents('Musik', [TNotes]);
end;

end.