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#1 |
Registered User
Join Date: Jul 2022
Location: Australia
Posts: 49
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Best way to implement dynamic resizing of gadgets/windows
Hi all!
If you've followed my previous threads, you'll know I'm writing a Reaction app in assembler. So far I've managed to workaround, or figure out all my issues, however I've got a question I'd like to throw out there. My app contains a button gadget (Reaction class) that renders an image in it (it's actually the image from an arbitrary .info file, so an icon). It renders fine; all good. However, sometimes the icon's width/height exceed the size of the button gadget and it's rendered outside the bounds, resizing the window to make it bigger fixes this. How should I best handle this scenario? 1. Detect that the gadget is too small and issue ChangeWindowBox() to scale the window by some factor; or 2. just scale the image so it fits in the gadget. The layout class is a little primitive I feel, at least I haven't figured out a way that would have the gadget auto-resized (I've tried calling SetGadgetAttrs to modify the dimensions of the button, but the layout itself prevents it from resizing). Appreciate any feedback folks may have on this! Cheers, -Matt I've attached screenshots showing what I'm talking about! Last edited by Mafi; 07 February 2024 at 06:40. |
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#2 |
Registered User
Join Date: Jan 2002
Location: Germany
Posts: 7,052
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You use SetAttrs() to tell the button about the new GA_Image and then call WM_RETHINK on the window object. The window will resize itself if required.
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#3 |
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Join Date: Jul 2022
Location: Australia
Posts: 49
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Thanks Thomas - will try this when I get home!
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#4 |
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Join Date: Jul 2022
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Ok, I used SetAttrsA to update GA_Image (this works) of the button; but sending WM_RETHINK to the window object doesn't appear to do anything
![]() -M |
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#5 |
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Join Date: Jan 2002
Location: Germany
Posts: 7,052
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Check out this example. It does almost the same as your program.
First argument is path to directory with pictures. |
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#6 |
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Join Date: Jul 2022
Location: Australia
Posts: 49
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Thanks Thomas, yes this is what I had in mind. The only difference I can see is that in your code GA_Image is a pointer to a bitmap class object whereas mine is a pointer to the bitmap at do_Gadget->gg_GadgetRender. I wouldn’t have thought that would matter though?
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#7 |
Registered User
Join Date: Jan 2002
Location: Germany
Posts: 7,052
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Well, I changed the example to use icons rather than bitmaps and it still works for me.
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#8 | |
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Join Date: Jul 2022
Location: Australia
Posts: 49
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Quote:
Thanks again. -M |
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