{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
osCommerce Product Manager for Windows (oscpmwin).
Copyright ©2003-2006 by Mario A. Valdez-Ramirez.

You can contact Mario A. Valdez-Ramirez
by email at mario@mariovaldez.org or paper mail at
Olmos 809, San Nicolas, NL. 66495, Mexico.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
unit pimgzoom;

interface

uses
  Windows, Classes, Graphics, Controls, Forms, ExtCtrls;

type
  Topm_Form_ImageZoom = class(TForm)
    opm_Image_ZoomImage: TImage;
    procedure opm_Image_ZoomImageClick(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormDeactivate(Sender: TObject);
    procedure FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
    procedure FormHide(Sender: TObject);
  private
  public
  end;

var
  opm_Form_ImageZoom: Topm_Form_ImageZoom;

implementation

uses gnugettext, oscpmdata, attention;

{$R *.dfm}



{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
procedure Topm_Form_ImageZoom.opm_Image_ZoomImageClick(Sender: TObject);
begin
  PRopm_Sound ('RestoreDown', opmG_UISilent);
  opm_Form_ImageZoom.Close;
end;

{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
procedure Topm_Form_ImageZoom.FormShow(Sender: TObject);
VAR
  MaxX, MaxY, WSizeX, WSizeY : LONGINT;
begin
  MaxX := Screen.WorkAreaWidth;
  MaxY := Screen.WorkAreaHeight;
  WSizeX := (opm_Form_ImageZoom.Width - opm_Form_ImageZoom.ClientWidth) + opm_Image_ZoomImage.Picture.Width;
  WSizeY := (opm_Form_ImageZoom.Height - opm_Form_ImageZoom.ClientHeight) + opm_Image_ZoomImage.Picture.Height;
  IF (WSizeX > MaxX) THEN
    BEGIN
      opm_Form_ImageZoom.Width := MaxX;
      HorzScrollBar.Range := opm_Image_ZoomImage.Picture.Width;
      HorzScrollBar.Position := 0;
    END
  ELSE
    BEGIN
      opm_Form_ImageZoom.ClientWidth := opm_Image_ZoomImage.Picture.Width;
      HorzScrollBar.Range := opm_Image_ZoomImage.Picture.Width;
    END;
  IF (WSizeY > MaxY) THEN
    BEGIN
      opm_Form_ImageZoom.Height := MaxY;
      VertScrollBar.Range := opm_Image_ZoomImage.Picture.Height;
      VertScrollBar.Position := 0;
    END
  ELSE
    BEGIN
      opm_Form_ImageZoom.ClientHeight := opm_Image_ZoomImage.Picture.Height;
      VertScrollBar.Range := opm_Image_ZoomImage.Picture.Height;
    END;
  opm_Image_ZoomImage.Hint := opm_Image_ZoomImage.Hint + #13#10#13#10 + _('Click to close...');
  opm_Form_ImageZoom.Top := ((MaxY - opm_Form_ImageZoom.Height) DIV 2);
  opm_Form_ImageZoom.Left := ((MaxX - opm_Form_ImageZoom.Width) DIV 2);
  PRopm_Sound ('RestoreUp', opmG_UISilent);
end;

{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
procedure Topm_Form_ImageZoom.FormCreate(Sender: TObject);
begin
  opm_Image_ZoomImage.Cursor := crHandPoint;
  TranslateComponent (self);
end;

{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
procedure Topm_Form_ImageZoom.FormDeactivate(Sender: TObject);
begin
  PRopm_Sound ('RestoreDown', opmG_UISilent);
  opm_Form_ImageZoom.Close;
end;



{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
procedure Topm_Form_ImageZoom.FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
  CASE Key OF
    VK_RETURN, VK_SPACE, VK_ESCAPE : opm_Form_ImageZoom.Close;
    VK_LEFT : HorzScrollBar.Position := HorzScrollBar.Position - HorzScrollBar.Increment;
    VK_RIGHT : HorzScrollBar.Position := HorzScrollBar.Position + HorzScrollBar.Increment;
    VK_UP : VertScrollBar.Position := VertScrollBar.Position - VertScrollBar.Increment;
    VK_DOWN : VertScrollBar.Position := VertScrollBar.Position + VertScrollBar.Increment;
  END;
end;


{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%}
procedure Topm_Form_ImageZoom.FormHide(Sender: TObject);
begin
  opm_Image_ZoomImage.Picture := NIL;
end;

end.