Масштабирование картинки по ширине или высоте

Автор: Шляхов Георгий

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Image1: TImage;
    Edit1: TEdit;
    Button1: TButton;
    Bevel1: TBevel;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var
  Height, Width: integer;
  HH, WW: real;
begin
  Height := 329;
  Width := 329;
  Image1.Picture.LoadFromFile(edit1.Text);
  Image1.AutoSize := true;
  Image1.AutoSize := false;

  HH := Image1.Height / Height;
  WW := Image1.Width / Width;
  if (HH > WW) then
  begin
    Image1.Height := trunc(Image1.Height / HH);
    Image1.Width := trunc(Image1.Width / HH);
    Image1.Stretch := True;
    //ShowMessage('По высоте');
  end
  else
  begin
    Image1.Height := trunc(Image1.Height / WW);
    Image1.Width := trunc(Image1.Width / WW);
    Image1.Stretch := True;
    //ShowMessage('По ширине');
  end;
end;

end.