117 lines
3.0 KiB
ObjectPascal
117 lines
3.0 KiB
ObjectPascal
(* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is TurboPower Abbrevia
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*
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* The Initial Developer of the Original Code is
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* TurboPower Software
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*
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* Portions created by the Initial Developer are Copyright (C) 1997-2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* ***** END LICENSE BLOCK ***** *)
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{*********************************************************}
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{* ABBREVIA: STRMBMPU.DPR *}
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{* Copyright (c) TurboPower Software Co 1997 *}
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{* All rights reserved. *}
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{*********************************************************}
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{* ABBREVIA Example program file *}
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{*********************************************************}
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unit StrmBmpU;
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interface
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uses
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Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
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StdCtrls, ExtCtrls;
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type
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TForm1 = class(TForm)
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Image1: TImage;
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Button1: TButton;
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Memo1: TMemo;
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procedure Button1Click(Sender: TObject);
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private
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{ Private declarations }
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public
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{ Public declarations }
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end;
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var
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Form1: TForm1;
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implementation
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uses
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AbUnzPrc,
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AbZipPrc;
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{$R *.DFM}
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procedure TForm1.Button1Click(Sender: TObject);
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var
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UStrm : TMemoryStream;
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CStrm : TMemoryStream;
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Image2 : TImage;
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begin
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{ Create the compressed stream and the uncompressed stream. }
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UStrm := TMemoryStream.Create;
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CStrm := TMemoryStream.Create;
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{ Copy the bitmap image to the memory stream. }
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Image1.Picture.Bitmap.SaveToStream(UStrm);
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{ Set the stream position to the beginning. }
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UStrm.Position := 0;
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{ Compress the stream. }
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DeflateStream(UStrm, CStrm);
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{ Remove all data from the uncompressed stream. }
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UStrm.Clear;
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{ Reset the compressed stream back to the beginning. }
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CStrm.Position := 0;
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{ Decompress the stream back to the original uncompressed }
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{ stream and then reset the stream position back to 0. }
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InflateStream(CStrm, UStrm);
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UStrm.Position := 0;
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{ Now create a new TImage. Make it the same size as the }
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{ original image but move it down and to the left. }
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Image2 := TImage.Create(Self);
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Image2.Top := Image1.Top + 20;
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Image2.Left := Image1.Left + 20;
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Image2.Width := Image1.Width;
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Image2.Height := Image1.Height;
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Image2.Parent := Self;
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{ Delete the original TImage. }
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Image1.Free;
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{ Load the new bitmap with the data from the stream }
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{ that contains the decompressed image. }
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Image2.Picture.Bitmap.LoadFromStream(UStrm);
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{ Free the memory streams. }
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UStrm.Free;
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CStrm.Free;
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end;
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end.
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