procedure Register;
begin
 RegisterComponents('Samples', [TGauge]);
end;

unit Gauges;

interface

uses SysUtils, Windows, Messages, Classes, Graphics, Controls, Forms, StdCtrls;

type

  TGaugeKind = (gkText, gkHorizontalBar, gkVerticalBar, gkPie, gkNeedle);

  TGauge = class(TGraphicControl)
  private
    FMinValue: Longint;
    FMaxValue: Longint;
    FCurValue: Longint;
    FKind: TGaugeKind;
    FShowText: Boolean;
    FBorderStyle: TBorderStyle;
    FForeColor: TColor;
    FBackColor: TColor;
    procedure PaintBackground(AnImage: TBitmap);
    procedure PaintAsText(AnImage: TBitmap; PaintRect: TRect);
    procedure PaintAsNothing(AnImage: TBitmap; PaintRect: TRect);
    procedure PaintAsBar(AnImage: TBitmap; PaintRect: TRect);
    procedure PaintAsPie(AnImage: TBitmap; PaintRect: TRect);
    procedure PaintAsNeedle(AnImage: TBitmap; PaintRect: TRect);
    procedure SetGaugeKind(Value: TGaugeKind);
    procedure SetShowText(Value: Boolean);
    procedure SetBorderStyle(Value: TBorderStyle);
    procedure SetForeColor(Value: TColor);
    procedure SetBackColor(Value: TColor);
    procedure SetMinValue(Value: Longint);
    procedure SetMaxValue(Value: Longint);
    procedure SetProgress(Value: Longint);
    function GetPercentDone: Longint;
  protected
    procedure Paint; override;
  public
    constructor Create(AOwner: TComponent); override;
    procedure AddProgress(Value: Longint);
    property PercentDone: Longint read GetPercentDone;
  published
    property Align;
    property Anchors;
    property BackColor: TColor read FBackColor write SetBackColor default clWhite;
    property BorderStyle: TBorderStyle read FBorderStyle write SetBorderStyle default bsSingle;
    property Color;
    property Constraints;
    property Enabled;
    property ForeColor: TColor read FForeColor write SetForeColor default clBlack;
    property Font;
    property Kind: TGaugeKind read FKind write SetGaugeKind default gkHorizontalBar;
    property MinValue: Longint read FMinValue write SetMinValue default 0;
    property MaxValue: Longint read FMaxValue write SetMaxValue default 100;
    property ParentColor;
    property ParentFont;
    property ParentShowHint;
    property PopupMenu;
    property Progress: Longint read FCurValue write SetProgress;
    property ShowHint;
    property ShowText: Boolean read FShowText write SetShowText default True;
    property Visible;
  end;

procedure Register; //Neu hinzufügen!

implementation

uses Consts;

//Neu hinzufügen!
procedure Register;
begin
 RegisterComponents('Samples', [TGauge]);
end;

type
  TBltBitmap = class(TBitmap)
    procedure MakeLike(ATemplate: TBitmap);
  end;

{ TBltBitmap }

procedure TBltBitmap.MakeLike(ATemplate: TBitmap);
begin
  Width := ATemplate.Width;
  Height := ATemplate.Height;
  Canvas.Brush.Color := clWindowFrame;
  Canvas.Brush.Style := bsSolid;
  Canvas.FillRect(Rect(0, 0, Width, Height));
end;