Fixed Mac OS X Button appearance; turns out it was using the wrong font. Also updated the TODO file to mark this fix and remove other stale/already fixed details.

bleh_darwin.m

@@ -21,6 +21,7 @@ Go wrapper functions (bleh_darwin.go) call these directly and take care of stdin
 #include <AppKit/NSEvent.h>
 #include <AppKit/NSGraphics.h>
 #include <AppKit/NSBitmapImageRep.h>
+#include <AppKit/NSCell.h>
 
 /* exception to the above: cgo doesn't like Nil and delegate_darwin.go has //export so I can't have this there */
 Class NilClass = Nil;
@@ -317,3 +318,33 @@ struct xpoint getTranslatedEventPoint(id self, id event)
 	ret.y = (int64_t) p.y;
 	return ret;
 }
+
+/*
+we don't need this here technically — it can be done in Go just fine — but it's easier here
+*/
+
+static id c_NSFont;
+static SEL s_setFont;
+static SEL s_systemFontOfSize;
+static SEL s_systemFontSizeForControlSize;
+static BOOL setFont_init = NO;
+
+static CGFloat (*objc_msgSend_cgfloatret)(id, SEL, ...) =
+	(CGFloat (*)(id, SEL, ...)) objc_msgSend_fpret;
+
+void objc_setFont(id what, unsigned int csize)
+{
+	CGFloat size;
+
+	if (setFont_init == NO) {
+		c_NSFont = objc_getClass("NSFont");
+		s_setFont = sel_getUid("setFont:");
+		s_systemFontOfSize = sel_getUid("systemFontOfSize:");
+		s_systemFontSizeForControlSize = sel_getUid("systemFontSizeForControlSize:");
+		setFont_init = YES;
+	}
+
+	size = objc_msgSend_cgfloatret(c_NSFont, s_systemFontSizeForControlSize, (NSControlSize) csize);
+	objc_msgSend(what, s_setFont,
+		objc_msgSend(c_NSFont, s_systemFontOfSize, size));
+}

objc_darwin.h

@@ -117,4 +117,7 @@ extern BOOL addAreaViewDrawMethod(Class);
 extern void drawImage(void *, int64_t, int64_t, int64_t, int64_t, int64_t);
 extern struct xpoint getTranslatedEventPoint(id, id);
 
+/* for sysdata_darwin.go */
+extern void objc_setFont(id, unsigned int);
+
 #endif

sysdata_darwin.go

@@ -118,7 +118,7 @@ var classTypes = [nctypes]*classData{
 				C.BOOL(C.YES))			// defer creation of device until we show the window
 			objc_setDelegate(win, appDelegate)
 			// this is needed for Areas in the window to receive mouse move events
-			C.objc_msgSend_bool(win, _setAcceptsMouseMovedEvents, C.BOOL(C.YES))
+//			C.objc_msgSend_bool(win, _setAcceptsMouseMovedEvents, C.BOOL(C.YES))
 			return win
 		},
 		show:		func(what C.id) {
@@ -139,6 +139,9 @@ var classTypes = [nctypes]*classData{
 			objc_msgSend_uint(button, _setBezelStyle, 1)		// NSRoundedBezelStyle
 			C.objc_msgSend_id(button, _setTarget, appDelegate)
 			C.objc_msgSend_sel(button, _setAction, _buttonClicked)
+			// by default the button uses the wrong text size
+			// TODO do this for all controls
+			C.objc_setFont(button, 0)				// NSRegularControlSize
 			addControl(parentWindow, button)
 			return button
 		},

todo.md

@@ -28,18 +28,16 @@ important things:
 - because the main event loop is not called if initialization fails, it is presently impossible for MsgBoxError() to work if UI initialization fails; this basically means we cannot allow initializiation to fail on Mac OS X if we want to be able to report UI init failures to the user with one (which would be desirable, maybe (would violate Windows HIG?))
 - figure out where to auto-place windows in Cocoa (also window coordinates are still not flipped properly so (0,0) on screen is the bottom-left)
 	- also provide a method to center windows; Cocoa provides one for us but
-- I think Cocoa NSButton text is not vertically aligned properly...?
+- I think Cocoa listbox item text is too low?
-	- and listbox item text is too low?
 - NSPopUpButton does allow no initial selection ([b setSelectedIndex:-1]); use it
 	- need to use it /after/ adding initial items, otherwise it won't work
 	- find out if I can do the same with the ListBoxes
 - NSComboBox scans the entered text to see if it matches one of the items and returns the index of that item if it does; find out how to suppress this so that it returns -1 unless the item was chosen from the list (like the other platforms)
-- some Cocoa controls don't seem to resize correctly: Buttons have space around the edges and don't satisfy stretchiness
+- some Cocoa controls don't seem to resize correctly: Buttons have space around the edges
 - make sure GTK+ documentation version point differences (x in 4.3.x) don't matter
 - LineEdit heights on Windows seem too big; either that or LineEdit, Button, and Label text is not vertically centered properly
 	- are Checkboxes and Comboboxes too small?
 	- Cocoa has similar margining issues (like Comboboxes having margins)
-		- oh, because message boxes use a different font on Windows 7 now, apparently?... Microsoft... TODO find out for sure
 - sometimes the size of the drop-down part of a Combobox becomes 0 or 1 or some other impossibly small value on Windows
 - make gcc (Unix)/clang (Mac OS X) pedantic about warnings/errors; also -Werror
 - make sure scrollbars in Listbox work identically on all platforms (specifically the existence and autohiding of both horizontal and vertical scrollbars)