On Sunday, 10 January 2016 at 21:51:53 UTC, Guillaume Piolat
wrote:
On Saturday, 9 January 2016 at 10:09:12 UTC, Jeremie Pelletier
wrote:
Hello, I'm trying to see if I can write a full Cocoa app in D,
and I'm having trouble creating D classes when the underlying
Objective-C interfaces have methods.
It works for the app delegate because it needs to override
them, but for other classes the compiler says the Objective-C
methods aren't implemented in the D subclass.
If you are looking to implement/override Obj-C methods in D, I
have done it here deriving from NSView
https://github.com/p0nce/dplug/blob/master/window/dplug/window/cocoawindow.d#L426
Using the Obj-C runtime, the D object declares a new class
object, populates it with methods (inverse mapping is done with
an instance variable containing "this"). Ugly, but works.
Example of a method callback:
https://github.com/p0nce/dplug/blob/master/window/dplug/window/cocoawindow.d#L499
Do not forget to prepend the callback arguments with id and
selector.
Sweet! I can at least get started while the full DIP gets
implemented :)
I already have the Metal bindings more or less ready to publish,
I'll try to work on the Cocoa ones this weekend and see how much
I can progress!
Oh by the way, I see the DIP declares blocks with the __block
keyword, shouldn't it be better to reuse delegate with
extern(Objective-C) ? Feels cleaner and more consistent with the
rest of the language to me.
