[REQ] Image zoom , panning.. like a PRO

[maurobotta]

Hi @Zeus64

I'm using Alcinoe+Skia for my VIP FMX app, and I need a function to display images on Android/iOS with modern, high-quality rendering (similar to what Apple or Flutter offers). I've been looking for examples, but I haven't found anything that achieves this level of quality.

Currently, I'm using a WebBrowser to enable smooth zoom functionality.

Do you have any tips or examples on how to use TALImage like a pro?

Thank you!

Mauro

[Zeus64]

What exactly you want to achieve ? I not understand what you mean by "I need a function to display images on Android/iOS with modern, high-quality rendering (similar to what Apple or Flutter offers)", can you show me some screenshot ?

[maurobotta]

New form, drop a image component, set it
Full screen, add any code for support zoom and panning, compile for Android, Run...

At runtime che the zoom quality .. is terrible.

If you use a TWebbrowser for view image the zoom is good.

[Zeus64]

Ah, I see! In this approach, you can handle it manually. Start by creating a texture of the image using a function like ALLoadFromStreamToDrawable, specifying the maximum size you want to achieve. Then, in the FormPaint event, use ALDrawDrawable with the appropriate ADstRect to paint the image onto the form. When panning, simply adjust and increase the ADstRect. Since the texture is already large, you won't lose quality.