From: D.V. <dav...@gm...> - 2011-09-01 11:14:54
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Bonjour List, If there a way to draw a bitmap so it fits a specific size (rescaling it if needed ?) I didn't find a way in the docs, but the documentation for drawBitmap is thin, wxWidget help didn't help much. Thanks ! David. |
From: Eric Y. K. <eri...@gm...> - 2011-09-01 18:30:40
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Hi, On Thu, Sep 01, 2011 at 13:14:48 +0200, D.V. wrote: > If there a way to draw a bitmap so it fits a specific size (rescaling > it if needed ?) > > I didn't find a way in the docs, but the documentation for drawBitmap > is thin, wxWidget help didn't help much. I think you'll want to use the wxImage::Scale function [1], which is exposed as imageScale in wxcore. (I don't really remember the details here) It's useful to know that wxHaskell has an automatically generated bit of Haskell from a C++ => C wrapper. So if it's in wxWidgets, it may just be buried away in wxcore somewhere [2], even if it's not exposed with a nice library function or bubbled up in wx. The scale function from the wxImage class is called imageScale (the names are generated automatically: drop the wx, camel case, etc)... [1]: http://wiki.wxwidgets.org/WxImage [2]: http://hackage.haskell.org/packages/archive/wxcore/0.12.1.7/doc/html/Graphics-UI-WXCore-WxcClassesAL.html -- Eric Kow <http://erickow.com> |
From: Dave T. <duk...@gm...> - 2011-09-01 17:50:01
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On 1 September 2011 12:14, D.V. <dav...@gm...> wrote: > Bonjour List, > > If there a way to draw a bitmap so it fits a specific size (rescaling > it if needed ?) > Erm, well it appears that imageScale is wrapped by wxcore (I'm not sure how familiar you are with wxHaskell?), so it *might* just work, see here: http://hackage.haskell.org/packages/archive/wxcore/0.12.1.7/doc/html/Graphics-UI-WXCore-WxcClassesAL.html#g:105 There is a basic image view program here: http://code.haskell.org/wxhaskell/samples/wxcore/ImageViewer.hs So it might be fun so see if you can use imageScale easily with that, you could even extend the sample code to provide zoom functionality and send a patch back to the list :) Good luck, Dave > > I didn't find a way in the docs, but the documentation for drawBitmap > is thin, wxWidget help didn't help much. > > Thanks ! > > David. > > > ------------------------------------------------------------------------------ > Special Offer -- Download ArcSight Logger for FREE! > Finally, a world-class log management solution at an even better > price-free! And you'll get a free "Love Thy Logs" t-shirt when you > download Logger. Secure your free ArcSight Logger TODAY! > http://p.sf.net/sfu/arcsisghtdev2dev > _______________________________________________ > wxhaskell-users mailing list > wxh...@li... > https://lists.sourceforge.net/lists/listinfo/wxhaskell-users > |
From: D.V. <dav...@gm...> - 2011-09-02 06:31:33
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2011/9/1 Dave Tapley <duk...@gm...>: > On 1 September 2011 12:14, D.V. <dav...@gm...> wrote: >> >> Bonjour List, >> >> If there a way to draw a bitmap so it fits a specific size (rescaling >> it if needed ?) > > Erm, well it appears that imageScale is wrapped by wxcore (I'm not sure how > familiar you are with wxHaskell?), so it *might* just work, see here: > http://hackage.haskell.org/packages/archive/wxcore/0.12.1.7/doc/html/Graphics-UI-WXCore-WxcClassesAL.html#g:105 Thanks, that file had the function I needed, turned out I just had something work with dcSetUserScale. That's not to say that my troubles are over, but now I can move forward ! David. |