Fine-tuned margin/spacing values on Mac OS X. Also more future plans.

redo/container_darwin.go

@@ -39,13 +39,12 @@ func containerResized(data unsafe.Pointer, width C.intptr_t, height C.intptr_t)
 	c.resize(0, 0, int(width), int(height))
 }
 
-// THIS IS A GUESS. TODO.
-// The only indication that this is remotely correct is the Auto Layout Guide implying that 12 pixels is the "Aqua space".
+// These are based on measurements from Interface Builder.
 const (
-	macXMargin = 12
-	macYMargin = 12
-	macXPadding = 12
-	macYPadding = 12
+	macXMargin = 20
+	macYMargin = 20
+	macXPadding = 8
+	macYPadding = 8
 )
 
 func (c *container) beginResize() (d *sizing) {

redo/future

@@ -33,7 +33,14 @@ Mac OS X
 		// in the other case, the most correct thing would be for Label to be aligned to the alignment rect, but I can't get this working, and it looks fine as it is anyway
 	other controls
 		same rules? checkboxes seem damning...
+	ok in general
+		spacing applies to alignment rects
+			will conflict with Stack/Grid precalculation
+			unless we resize the control and move it around to suit
+		Tabs seem to have differnt margin rules
+			need to check padding rules within Tabs
 TextField
+		text alignment (think labels and checkboxes) may be a perpetual problem though
 	add events (figure out which of the following are appropriate: changed, enter pressed)
 	provide some facility to mark invalid values
 	figure out numerics because you CAN paste into numeric boxes on Windows and GTK+ has no built-in number validator as far as I know