On 21 Aug 2005, at 05:23, Mark Wedel wrote:
Amorya North wrote:
I've got somewhere. Common files compile in now, and work fine.
I've got a vague event loop up and running, and some of the
callbacks work. I've got as far as displaying text sent to the
console, and displaying a list of current stats.
Here's a screenshot:
http://www.amoryanorth.com/crossmac.png
There's a lot I don't understand about the common code still - in
particular, what the create_and_rescale_image_from_data() function
is actually supposed to do! But I'm working on it.
Just as it sounds.
All image data is png. However, the png data has to be converted
to something that the display system knows how to display.
In order to abstract this, the cache_entry image_data pointer is
basically private - whatever the display specific code deams to
store there is fine.
The basic idea of this is to have the caching logic all in the
common code (if it gets a face it knows about, it will do the right
thing), but have the actual rendering code in the client area.
For the gtk and gtk-v2 clients, that function is perhaps a bit
messier than need be, because those clients support different
display modes (pixmap, sdl, and in case of gtk-v2, opengl), so what
exactly is stores there may be different.
The rescale part is jsut that - rescaling of the image. You may
decide for your client that you don't want to allow rescaling -
that's your choice. Just for the gtk clients, people wanted to be
able to rescale the data so they could play on lower resolution
displays.
Ah, ok - so I can store a pointer to an NSImage in the cache entry?
That would help a lot. I was wondering where I'd be able to do the
conversion.
As for scaling, it's dead easy in Cocoa. A single line of code will
scale the map window's contents _after_ it's been composited. So I
won't allow scaling of images to be stored - it's just not needed!
Thanks for your help.
Amorya
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