how to load gif image
lazarus / 39-Graphics

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__thinhorigami · 2021-10-08 11:59

Hi all,
I have a question.
is there a way to get the gif file?
and i have an idea to make a gif art, i can do it if its just an
image. but what should i do if it's a gif. I need some help.
thanks all

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wp · 2021-10-08 14:24

I don't fully understand what you are trying to achieve. Load a gif
file and display it on a Lazarus form? For this, add unit fpreadgif to
"uses" and call Image1.Picture.LoadFromFile(name_of_gif_file) for an
image on the form. However, this does not support animated gifs and
has some more drawbacks. For a complete gif viewer you can install
GifAnim or GifViewer from the online-package-manager.

If you are trying to write a gif you'll have to live with little
support here. GifAnim and GifViewer do not support writing at all.
There is a tweak to provide a unit fpwritegif for fcl - search the
forum, it was recently discussed -, but this is not for animated
images.

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circular · 2021-10-10 12:16

You can make Gif using BGRABitmap's TBGRAAnimatedGif:
https://github.com/bgrabitmap/bgrabitmap/blob/master/bgrabitmap/bgraan
imatedgif.pas

Create an empty gif, call SetSize and add frames. There are various
methods. The simplest is to call AddFullFrame for each frame.