More auto layout fixes and hacks and TODOs.

darwin/autolayout.m

@@ -51,6 +51,10 @@ void layoutSingleView(NSView *superview, NSView *subview, int margined, NSString
 
 	[superview removeConstraints:[superview constraints]];
 
+	// don't hug if needed
+	setHorzHuggingPri(subview, NSLayoutPriorityDefaultLow);
+	setVertHuggingPri(subview, NSLayoutPriorityDefaultLow);
+
 	margin = 0;
 	if (margined)
 		margin = 20;		// TODO named constant

darwin/box.m

@@ -2,11 +2,10 @@
 #import "uipriv_darwin.h"
 
 // TODOs:
-// - page 2 is growable but the wrong control grows
-// - tab on page 2 is glitched
-// - separators on page 4 have variable padding after them
+// - tab on page 2 is glitched initially
 // - 10.8: if we switch to page 4, then switch back to page 1, check Spaced, and go back to page 4, some controls (progress bar, popup button) are clipped on the sides
 // - calling layoutSubtreeIfNeeded on a superview of the box will cause the following intrinsic content size thing to not work until the window is resized in the primary direction; this is bad if we ever add a Splitter...
+// - moving around randomly through the tabs does this too
 
 // the default is to have no intrinsic content size; this wreaks havoc with nested no-stretchy boxes fighting over which box gets the remaining space
 // let's use a 0x0 intrinsic size instead; that seems to fix things

darwin/fontbutton.m

@@ -2,6 +2,7 @@
 #import "uipriv_darwin.h"
 
 // TODO drag and drop fonts? what other interactions does NSColorWell allow that we can do for fonts?
+// TODO when closing the window, deactivate the current button
 
 @interface fontButton : NSButton {
 	uiFontButton *libui_b;

darwin/spinbox.m

@@ -82,12 +82,12 @@ struct uiSpinbox {
 		[self addConstraint:mkConstraint(self->stepper, NSLayoutAttributeTop,
 			NSLayoutRelationEqual,
 			self, NSLayoutAttributeTop,
-			1, 0,
+			1, -1,			// TODO make sure this is right
 			@"uiSpinbox top edge stepper")];
 		[self addConstraint:mkConstraint(self->stepper, NSLayoutAttributeBottom,
 			NSLayoutRelationEqual,
 			self, NSLayoutAttributeBottom,
-			1, 0,
+			1, -1,		// TODO make sure this is right
 			@"uiSpinbox bottom edge stepper")];
 		[self addConstraint:mkConstraint(self->tf, NSLayoutAttributeTrailing,
 			NSLayoutRelationEqual,