Zoom image
lazarus / 39-Graphics

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pcurtis · 2020-07-06 16:57

Hi All,

I have been thinking of making my own image viewer for some time, and
now I would like to start. The first problem I for see is the zooming
of the image. The only thing is I don't know where to start. I am
looking for something like Google Picasa but without the bloat
(libraries, ....). Just a viewer.

The zoom funciton is important. How would / do I implement this?

Thanks in advance.

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howardpc · 2020-07-06 17:17

This link might get you started
https://forum.lazarus.freepascal.org/index.php/topic,43424.msg303879.h
tml#msg303879

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Handoko · 2020-07-06 17:25

Quote from: pcurtis on July 06, 2020, 06:57:56 pmI don't know where to
start.

If you haven't know how to load an image, this is one among them:
https://forum.lazarus.freepascal.org/index.php/topic,37442.msg251587.h
tml#msg251587

TBGRABitmap is powerful and still relatively easy:
https://forum.lazarus.freepascal.org/index.php/topic,48897.msg353009.h
tml#msg353009