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unit1.pas
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unit1.pas
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(******************************************************************************)
(* Demo for uQuadtree.pas 15.04.2010 *)
(* *)
(* Version : 0.01 *)
(* *)
(* Author : Uwe Schächterle (Corpsman) *)
(* *)
(* Support : www.Corpsman.de *)
(* *)
(* Description : Quadtree Coding with Toleranz for grayscale Bitmaps *)
(* *)
(* License : See the file license.md, located under: *)
(* https://github.com/PascalCorpsman/Software_Licenses/blob/main/license.md *)
(* for details about the license. *)
(* *)
(* It is not allowed to change or remove this text from any *)
(* source file of the project. *)
(* *)
(* Warranty : There is no warranty, neither in correctness of the *)
(* implementation, nor anything other that could happen *)
(* or go wrong, use at your own risk. *)
(* *)
(* Known Issues: none *)
(* *)
(* History : 0.01 - Initial version *)
(* *)
(******************************************************************************)
Unit Unit1;
{$MODE objfpc}{$H+}
Interface
Uses
Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
StdCtrls, uquadtree, math;
Type
{ TForm1 }
TForm1 = Class(TForm)
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
OpenDialog1: TOpenDialog;
OpenDialog2: TOpenDialog;
SaveDialog1: TSaveDialog;
SaveDialog2: TSaveDialog;
ScrollBar1: TScrollBar;
Procedure Button1Click(Sender: TObject);
Procedure Button2Click(Sender: TObject);
Procedure Button3Click(Sender: TObject);
Procedure Button4Click(Sender: TObject);
Procedure FormClose(Sender: TObject; Var CloseAction: TCloseAction);
Procedure FormCreate(Sender: TObject);
Procedure ScrollBar1Change(Sender: TObject);
private
{ private declarations }
public
{ public declarations }
End;
Var
Form1: TForm1;
QT: tquadtree;
Implementation
{$R *.lfm}
Uses LazUTF8;
{ TForm1 }
Procedure TForm1.Button1Click(Sender: TObject);
Var
b: TBitmap;
SourceSize, destSize: int64;
Begin
label3.caption := '';
If OpenDialog1.execute Then
If SaveDialog1.execute Then Begin
b := Tbitmap.create;
b.loadfromfile(OpenDialog1.FileName);
qt.SaveBitmap(b, SaveDialog1.FileName, ScrollBar1.Position);
b.free;
SourceSize := FileSize(OpenDialog1.FileName);
destSize := FileSize(SaveDialog1.FileName);
label3.caption := 'Compression Rate: ' + FloattostrF((SourceSize / destSize) * 100, FFFixed, 7, 2) + '%'
End;
End;
Procedure TForm1.Button2Click(Sender: TObject);
Var
b: Tbitmap;
Begin
label3.caption := '';
If opendialog2.execute Then
If SaveDialog2.execute Then Begin
b := QT.LoadBitmap(opendialog2.FileName);
b.SaveToFile(SaveDialog2.FileName);
b.free;
End;
End;
Procedure TForm1.Button3Click(Sender: TObject);
Begin
close;
End;
Procedure TForm1.Button4Click(Sender: TObject);
Begin
showmessage(
'Quadtree Compression version 0.01' + LineEnding +
'by Corpsman' + LineEnding +
'Support : www.Corpsman.de' + LineEnding + LineEnding +
'Compression:' + LineEnding +
'Open the Bitmap File with the Komprimieren Button' + LineEnding +
'Then give the Filename for the stored data.' + LineEnding +
'By giving the Toleranz > 0 you get a losy Compression' + LineEnding +
'max Toleranz = 255' + LineEnding + LineEnding +
'Uncomression:' + LineEnding +
'Open the Compressed Data with the Dekomprimieren Button' + LineEnding +
'Then give the Filename for the stored data.'
);
End;
Procedure TForm1.FormClose(Sender: TObject; Var CloseAction: TCloseAction);
Begin
qt.free;
End;
Procedure TForm1.FormCreate(Sender: TObject);
Begin
caption := 'Quadtree demo';
qt := TQuadtree.create;
OpenDialog1.InitialDir := ExtractFilePath(ParamStrUTF8(0));
OpenDialog2.InitialDir := ExtractFilePath(ParamStrUTF8(0));
SaveDialog1.InitialDir := ExtractFilePath(ParamStrUTF8(0));
SaveDialog2.InitialDir := ExtractFilePath(ParamStrUTF8(0));
ScrollBar1Change(Nil);
Label3.caption := '';
End;
Procedure TForm1.ScrollBar1Change(Sender: TObject);
Begin
label2.caption := inttostr(ScrollBar1.Position);
End;
End.