Re: [Rubycocoa-talk] Using structs

[Jonathan P. <jp...@dc...>]

On 28 Feb 2006, at 22:39, Mario Pehle (Sorceforge) wrote:

> I try to connect Core Image via RubyCocoa to Ruby. To write  
> processed images to hard disk, in need an image representation. In  
> one step I have to specify a CGRect as the region, which should be  
> taken for further steps. The CGRect is a struct defined in  
> CGGeometry (have a look at http://developer.apple.com/documentation/ 
> GraphicsImaging/Reference/CGGeometry/Reference/reference.html)
>
> In the sources of RubyCocoa I found a way to deal with enums, but  
> not with structs. Is this still implemented? And if "yes", how I  
> can make use of it?

I don't think Core Image is properly supported yet in RubyCocoa  
(please correct me if I'm wrong). I seem to remember somebody else  
having a go at getting it to work a while back...

I think arbitrary structs are not supported. However, since CGRect is  
structurally the same as an NSRect you can probably get away with  
this (untested):

--- objc/ocdata_conv.m  (revision 38)
+++ objc/ocdata_conv.m  (local)
@@ -68,8 +68,15 @@
      else if (strcmp(octype_str, @encode(NSRange)) == 0) {
        oct = _PRIV_C_NSRANGE;
      }
-  }
-  else if (octype_str[0] == '^') {
+  } else if (octype_str[0] == '{') {
+      if (strcmp(octype_str, @encode(CGRect)) == 0) {
+          oct = _PRIV_C_NSRECT;
+      } else if (strcmp(octype_str, @encode(CGPoint)) == 0) {
+          oct = _PRIV_C_NSPOINT;
+      } else if (strcmp(octype_str, @encode(CGSize)) == 0) {
+          oct = _PRIV_C_NSSIZE;
+      }
+  } else if (octype_str[0] == '^') {
      if (strcmp(octype_str, "^@") == 0)
        oct = _PRIV_C_ID_PTR;
      else