Wrote the uiControl core for the OS X backend.

redo/darwin/control.m

@@ -0,0 +1,127 @@
+// 11 june 2015
+#include "uipriv_darwin.h"
+
+#define VIEW(c) ((NSView *) uiControlHandle((c)))
+
+static void singleViewCommitDestroy(uiControl *c)
+{
+	[VIEW(c) release];
+}
+
+static void singleViewCommitSetParent(uiControl *c, uiControl *parent)
+{
+	if (parent == NULL) {
+		[VIEW(c) removeFromSuperview];
+		return;
+	}
+	[VIEW(parent) addSubview:VIEW(c)];
+}
+
+static void singleViewPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
+{
+	NSView *v;
+	NSRect r;
+
+	v = VIEW(c);
+	if (![v respondsToSelector:@selector(sizeToFit)])
+		complain("uiControl %p does not respond to -sizeToFit; its type needs to provide an implementation of uiControlPreferredSize()", c);
+	[v sizeToFit];
+	// use alignmentRect here instead of frame because we'll be resizing based on that
+	r = [v alignmentRectForFrame:[v frame]];
+	*width = (intmax_t) r.size.width;
+	*height = (intmax_t) r.size.height;
+}
+
+static void singleViewResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
+{
+	NSRect r;
+
+	r.origin.x = x;
+	// mac os x coordinate system has (0,0) in the lower-left
+	r.origin.y = ([[VIEW(c) superview] bounds].size.height - height) - y;
+	r.size.width = width;
+	r.size.height = height;
+	// this is the size of the alignment rect; the frame can be bigger (see NSButton)
+	r = [VIEW(c) frameForAlignmentRect:r];
+	[VIEW(c) setFrame:r];
+}
+
+static uiSizing *singleViewSizing(uiControl *c)
+{
+	return uiDarwinNewSizing();
+}
+
+static void singleViewCommitShow(uiControl *c)
+{
+	[VIEW(c) setHidden:NO];
+}
+
+static void singleViewCommitHide(uiControl *c)
+{
+	[VIEW(c) setHidden:YES];
+}
+
+static void singleViewCommitEnable(uiControl *c)
+{
+	NSControl *cc;
+
+	if ([VIEW(c) respondsToSelector:@selector(setEnabled:)]) {
+		// use NSControl to avoid compiler warnings
+		cc = (NSControl *) VIEW(c);
+		[cc setEnabled:YES];
+	}
+}
+
+static void singleViewCommitDisable(uiControl *c)
+{
+	NSControl *cc;
+
+	if ([VIEW(c) respondsToSelector:@selector(setEnabled:)]) {
+		// use NSControl to avoid compiler warnings
+		cc = (NSControl *) VIEW(c);
+		[cc setEnabled:NO];
+	}
+}
+
+static uintptr_t singleViewStartZOrder(uiControl *c)
+{
+	// we don't need to do anything; Cocoa does it for us
+	return 0;
+}
+
+static uintptr_t singleViewSetZOrder(uiControl *c, uintptr_t insertAfter)
+{
+	// we don't need to do anything; Cocoa does it for us
+	return 0;
+}
+
+static int singleViewHasTabStops(uiControl *c)
+{
+	complain("singleViewHasTabStops() meaningless on OS X");
+	return 0;		// keep compiler happy
+}
+
+// called after creating the control's widget
+void uiDarwinMakeSingleWidgetControl(uiControl *c, NSView *view)
+{
+	// we have to retain the view so we can reparent it
+	[view retain];
+
+	uiControl(c)->CommitDestroy = singleViewCommitDestroy;
+	uiControl(c)->CommitSetParent = singleViewCommitSetParent;
+	uiControl(c)->PreferredSize = singleViewPreferredSize;
+	uiControl(c)->Resize = singleViewResize;
+	uiControl(c)->Sizing = singleViewSizing;
+	uiControl(c)->CommitShow = singleViewCommitShow;
+	uiControl(c)->CommitHide = singleViewCommitHide;
+	uiControl(c)->CommitEnable = singleViewCommitEnable;
+	uiControl(c)->CommitDisable = singleViewCommitDisable;
+	uiControl(c)->StartZOrder = singleViewStartZOrder;
+	uiControl(c)->SetZOrder = singleViewSetZOrder;
+	uiControl(c)->HasTabStops = singleViewHasTabStops;
+}
+
+void queueResize(uiControl *c)
+{
+	// TODO
+}

redo/unix/control.c

@@ -18,7 +18,7 @@ static void singleWidgetCommitSetParent(uiControl *c, uiControl *parent)
 		gtk_container_remove(GTK_CONTAINER(oldParent), WIDGET(c));
 		return;
 	}
-	newParent = WIDGET(parent);;
+	newParent = WIDGET(parent);
 	gtk_container_add(GTK_CONTAINER(newParent), WIDGET(c));
 }