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unit unEditor2;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, ExtCtrls, ColorGrd, ComCtrls;

type
  TForm1 = class(TForm)
    Panel1: TPanel;
    btnladen: TButton;
    btnSpeichern: TButton;
    btnbeenden: TButton;
    btnclear: TButton;
    GroupBox1: TGroupBox;
    Image1: TImage;
    ColorGrid2: TColorGrid;
    cbxGitterAnzeigen: TCheckBox;
    TrackBar1: TTrackBar;
    TrackBar2: TTrackBar;
    TrackBar3: TTrackBar;
    ColorDialog1: TColorDialog;
    Button1: TButton;
    procedure btnSpeichernClick(Sender: TObject);
    procedure btnladenClick(Sender: TObject);
    procedure btnclearClick(Sender: TObject);
    procedure btnbeendenClick(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure ColorGrid2Click(Sender: TObject);
    procedure Image1MouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
   
    procedure Button1Click(Sender: TObject);
    procedure TrackBar1Change(Sender: TObject);
   // procedure GroupBox1Click(Sender: TObject);
  private
    { Private-Deklarationen }
    procedure ClearImage(aDimension: Integer);
    procedure Gitteranzeigen;
    procedure Tone(Bit: TBitmap; r, g, b: Integer);
  
    procedure TrackBar3Change(Sender: TObject);
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.btnSpeichernClick(Sender: TObject);
begin
     Image1.Picture.SaveToFile('C:\bild.bmp');
end;

{procedure TForm1.btnladenClick(Sender: TObject);
begin
     Image1.Picture.LoadFromFile('C:\bild.bmp');
end;  }


procedure TForm1.btnclearClick(Sender: TObject);
var rect: TRect;
begin
  //Löscht gesamte Bildfläche
  ClearImage(32);
end;


procedure TForm1.btnbeendenClick(Sender: TObject);
begin
  if MessageDlg('Wollen Sie das Programm wirklich beenden',mtInformation,[mbYes,mbNo],0)= mrYes
  then
 Close;
end;

procedure TForm1.Gitteranzeigen;
begin
  if cbxGitterAnzeigen.Checked=true  then
  begin
    Image1.Canvas.Brush.Color:=clWhite;
    Image1.Canvas.FillRect(Image1.ClientRect);
    Image1.Canvas.Brush.Color:=clblack;

  end;
end;

procedure TForm1.ClearImage(aDimension: Integer);
var
  i: Integer;
begin
  Image1.Canvas.Pen.Color:=clWhite;
  Image1.Canvas.Brush.Color:=clWhite;
  Image1.Canvas.Pen.Style:=psSolid;
  Image1.Canvas.FillRect(Image1.ClientRect);
  Image1.Canvas.Pen.Color:=clblack;
  for i:=0 to aDimension do
  begin
    Image1.Canvas.MoveTo(0,Image1.Height div aDimension*i);
    Image1.Canvas.LineTo(Image1.Width,Image1.Height div aDimension*i);
  end;
  for i:=0 to aDimension do
  begin
    Image1.Canvas.MoveTo(Image1.Width div aDimension*i,0);
    Image1.Canvas.LineTo(Image1.Width div aDimension*i,Image1.Height);
  end;

end;

procedure TForm1.FormShow(Sender: TObject);
begin
  btnclearClick(self);
end;


procedure TForm1.ColorGrid2Click(Sender: TObject);
begin
   Image1.Canvas.Pen.Color := ColorGrid2.ForegroundColor;
end;

procedure TForm1.Image1MouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
//  Image1.Canvas.LineTo(x,y);
end;

procedure TileGraphic(const ATile: TBitmap; const ATarget: TCanvas);
var
 X, Y: Integer;
begin
 Y:=0;

 while Y < ATarget.ClipRect.Bottom  do
 begin
   X:=0;

   while X < ATarget.ClipRect.Right do
   begin
     ATarget.Draw(X, Y, ATile);
     Inc(X, ATile.Width);
   end;

   Inc(Y,ATile.Height);
 end;
end;

procedure TForm1.btnladenClick(Sender: TObject);
var
 Bmp: TBitmap;
begin
 Bmp:=TBitmap.Create;
 try
   Bmp.LoadFromFile('C:\bild.bmp');

   TileGraphic(Bmp, Image1.Canvas);
 finally
   Bmp.Free;
 end;

end;

procedure TForm1.Tone(Bit: TBitmap; r,g,b: Integer);
type
  PixArray = Array [1..3] of Byte;
var
  p: ^PixArray;
  h,w,i: Integer;
begin
  For h:=0 to Bit.Height-1 do
  begin
    p:= Bit.ScanLine[h];
    For w:=0 to Bit.Width-1 do
    begin
      If (round(p^[1] * ( 1 + b/100))<0) then p^[1]:=0 else
         If (round(p^[1] * ( 1 + b/100))>255) then p^[1]:=255
         else p^[1]:= round(p^[1] * ( 1 + b/100));
        If (round(p^[2] * ( 1 + g/100))<0) then p^[2]:=0 else
         If (round(p^[2] * ( 1 + g/100))>255) then p^[2]:=255
         else p^[2]:= round(p^[2] * ( 1 + g/100));
      If (round(p^[3] * ( 1 + r/100))<0) then p^[3]:=0 else
         If (round(p^[3] * ( 1 + r/100))>255) then p^[3]:=255
         else p^[3]:= round(p^[3] * ( 1 + r/100));
      Inc(p);
    end;
  end;
end;



procedure TForm1.TrackBar3Change(Sender: TObject);
begin
  Image1.Picture.Bitmap.LoadFromFile('C:\Bild.bmp');
  Tone(Image1.Picture.Bitmap,TrackBar1.Position,TrackBar2.Position,
  TrackBar3.Position);
  Image1.Refresh;
end;





procedure TForm1.Button1Click(Sender: TObject);
begin
  ColorDialog1.Execute;
  Image1.Canvas.Brush.Color:= ColorDialog1.Color;

end;



procedure TForm1.TrackBar1Change(Sender: TObject);
begin
  Image1.Picture.Bitmap.LoadFromFile('C:\Bild.bmp');
  Tone(Image1.Picture.Bitmap,TrackBar1.Position,TrackBar2.Position,
  TrackBar3.Position);
  Image1.Refresh;
end;


end.