Migrated prefsize_darwin.go to plain Objective-C. Not much left...!

prefsize_darwin.go

@@ -4,6 +4,7 @@ package ui
 
 // #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
 // #include "objc_darwin.h"
+// #include "prefsize_darwin.h"
 import "C"
 
 /*
@@ -17,14 +18,20 @@ var (
 
 // standard case: control immediately passed in
 func controlPrefSize(control C.id) (width int, height int) {
-	C.objc_msgSend_noargs(control, _sizeToFit)
+	r := C.controlPrefSize(control)
-	r := C.objc_msgSend_stret_rect_noargs(control, _frame)
 	return int(r.width), int(r.height)
 }
 
 // NSTableView is actually in a NSScrollView so we have to get it out first
 func listboxPrefSize(control C.id) (width int, height int) {
-	return controlPrefSize(listboxInScrollView(control))
+	r := C.listboxPrefSize(control)
+	return int(r.width), int(r.height)
+}
+
+// and for type checking reasons, progress bars are separate despite responding to -[sizeToFit]
+func pbarPrefSize(control C.id) (width int, height int) {
+	r := C.pbarPrefSize(control)
+	return int(r.width), int(r.height)
 }
 
 var prefsizefuncs = [nctypes]func(C.id) (int, int){
@@ -34,7 +41,7 @@ var prefsizefuncs = [nctypes]func(C.id) (int, int){
 	c_lineedit:		controlPrefSize,
 	c_label:			controlPrefSize,
 	c_listbox:			listboxPrefSize,
-	c_progressbar:		controlPrefSize,
+	c_progressbar:		pbarPrefSize,
 }
 
 func (s *sysData) preferredSize() (width int, height int) {

prefsize_darwin.h

@@ -0,0 +1,5 @@
+/* 15 may 2014 */
+
+extern struct xsize controlPrefSize(id);
+extern struct xsize listboxPrefSize(id);
+extern struct xsize pbarPrefSize(id);

prefsize_darwin.m

@@ -0,0 +1,60 @@
+// 15 may 2014
+
+#include "objc_darwin.h"
+#include "prefsize_darwin.h"
+#include <AppKit/NSControl.h>
+#include <AppKit/NSScrollView.h>
+#include <AppKit/NSTableView.h>
+#include <AppKit/NSProgressIndicator.h>
+
+#define to(T, x) ((T *) (x))
+#define toNSControl(x) to(NSControl, (x))
+#define toNSScrollView(x) to(NSScrollView, (x))
+#define toNSTableView(x) to(NSTableView, (x))
+#define toNSProgressIndicator(x) to(NSProgressIndicator, (x))
+
+#define inScrollView(x) ([toNSScrollView((x)) documentView])
+#define listboxInScrollView(x) toNSTableView(inScrollView((x)))
+#define areaInScrollView(x) inScrollView((x))
+
+struct xsize controlPrefSize(id control)
+{
+	NSControl *c;
+	NSRect r;
+	struct xsize s;
+
+	c = toNSControl(control);
+	[c sizeToFit];
+	r = [c frame];
+	s.width = (intptr_t) r.size.width;
+	s.height = (intptr_t) r.size.height;
+	return s;
+}
+
+struct xsize listboxPrefSize(id scrollview)
+{
+	NSTableView *c;
+	NSRect r;
+	struct xsize s;
+
+	c = listboxInScrollView(toNSScrollView(scrollview));
+	[c sizeToFit];
+	r = [c frame];
+	s.width = (intptr_t) r.size.width;
+	s.height = (intptr_t) r.size.height;
+	return s;
+}
+
+struct xsize pbarPrefSize(id control)
+{
+	NSProgressIndicator *c;
+	NSRect r;
+	struct xsize s;
+
+	c = toNSProgressIndicator(control);
+	[c sizeToFit];
+	r = [c frame];
+	s.width = (intptr_t) r.size.width;
+	s.height = (intptr_t) r.size.height;
+	return s;
+}