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Gif and tif file support to JPEGImage

Posted on 1998-11-16
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Last Modified: 2013-11-19
Hi!
How i can add gif and tif file support to JPEGImage, is there any dlls for that or some other way to add that support.

mhieta
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Question by:mhieta
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6 Comments
 
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Expert Comment

by:BlackMan
ID: 1346950
There is a great FW GIF component (with source) at www.melander.dk
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Accepted Solution

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scheiko earned 60 total points
ID: 1346951
Hi mhieta,

I think you'll find everything you're looking for on http://www.melander.dk/delphi/gifimage/index.html

Just download the source and follow the installation instructions...

Good luck!

Scheiko
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LVL 2

Author Comment

by:mhieta
ID: 1346952
Thanks all for answering that question. I don't know if i understanding correctly, with the TJPEGImage to support gifs, is that correct?.

mhieta

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LVL 2

Author Comment

by:mhieta
ID: 1346953
I need also support to tiff images using the JPEGImage.

mhieta
0
 

Expert Comment

by:scheiko
ID: 1346954
I've never heard of a patch or TTIFFImage object.

You can use the standard borland delphi3 TJPEGImage object to LoadFromFile a JPG picture:

Procedure TForm1.Button1Click (Sender:TObject);
var aJPG: TJPEGImage;
begin
     aJPG:=TJPEGImage.Create; {New JPEG Instance}
     if OpenDialog1.Execute then begin {If you've selected a filename}
          try
               aJPG.LoadFromFile; {Load the JPG from disk}
               PaintBox1.Canvas.Draw(0,0,aJPG); {Draw the JPG starting at (0,0)}
          finally
               aJPG.Free;
          end;
     end;
end;

The same construction is used for the TGIFImage:

Procedure TForm1.Button1Click (Sender:TObject);
var aGIF: TGIFImage;
begin
     aGIF:=TGIFImage.Create; {New GIF Instance}
     if OpenDialog1.Execute then begin {If you've selected a filename}
          try
               aGIF.LoadFromFile; {Load the GIF from disk}
               PaintBox1.Canvas.Draw(0,0,aGIF); {Draw the GIF starting at (0,0)}
          finally
               aGIF.Free;
          end;
     end;
end;

Use the Canvas.StretchDraw(TRect,Image) function to resize the pictures. You can not change the JPG's parameters. You'll need to copy the JPG to a TBitMap first, work on the bitmap, and then create a new TJPEGImage which is a copy of your bitmap.

Good luck!

Scheiko


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LVL 2

Author Comment

by:mhieta
ID: 1346955
Thanks Scheiko.

mhieta
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