Updated the GTK+ backend to have the new parenting and sizing changes. Now to implement Tab! ...though I should probably implement the changes on Mac OS X first.

redo/controls_unix.go

@@ -15,8 +15,6 @@ import "C"
 
 type widgetbase struct {
 	widget	*C.GtkWidget
-	parentw	*window
-	floating	bool
 }
 
 func newWidget(w *C.GtkWidget) *widgetbase {
@@ -27,31 +25,18 @@ func newWidget(w *C.GtkWidget) *widgetbase {
 
 // these few methods are embedded by all the various Controls since they all will do the same thing
 
-func (w *widgetbase) unparent() {
-	if w.parentw != nil {
-		// add another reference so it doesn't get removed by accident
-		C.g_object_ref(C.gpointer(unsafe.Pointer(w.widget)))
-		// we unref this in parent() below
-		w.floating = true
-		C.gtk_container_remove(w.parentw.layoutc, w.widget)
-		// redraw since we changed controls (by queueing a resize; thanks Jasper in irc.gimp.net/#gtk+)
-		C.gtk_widget_queue_resize(w.parentw.layoutw)
-		w.parentw = nil
-	}
-}
-
-func (w *widgetbase) parent(win *window) {
-	C.gtk_container_add(win.layoutc, w.widget)
-	w.parentw = win
-	// was previously parented; unref our saved ref
-	if w.floating {
-		C.g_object_unref(C.gpointer(unsafe.Pointer(w.widget)))
-		w.floating = false
-	}
+func (w *widgetbase) setParent(c *C.GtkContainer) {
+	C.gtk_container_add(c, w.widget)
 	// make sure the new widget is shown
 	C.gtk_widget_show_all(w.widget)
-	// redraw since we changed controls (see above)
-	C.gtk_widget_queue_resize(win.layoutw)
+}
+
+func (w *widgetbase) containerShow() {
+	C.gtk_widget_show_all(w.widget)
+}
+
+func (w *widgetbase) containerHide() {
+	C.gtk_widget_hide(w.widget)
 }
 
 type button struct {
@@ -135,3 +120,7 @@ func (c *checkbox) Checked() bool {
 func (c *checkbox) SetChecked(checked bool) {
 	C.gtk_toggle_button_set_active(c.toggle, togbool(checked))
 }
+
+//TODO
+func newTab() Tab{return newButton("tab")}
+func(*button)Append(string,Control){}

redo/sizing_unix.go

@@ -35,11 +35,12 @@ func (w *window) beginResize() (d *sizing) {
 	return d
 }
 
-func (w *window) endResize(d *sizing) {
-	C.gtk_widget_queue_draw(w.widget)
+func (c *container) endResize(d *sizing) {
+	// TODO
+//	C.gtk_widget_queue_draw(w.widget)
 }
 
-func (w *window) translateAllocationCoords(allocations []*allocation, winwidth, winheight int) {
+func (c *container) translateAllocationCoords(allocations []*allocation, winwidth, winheight int) {
 	// no need for coordinate conversion with gtk+
 }
 

redo/window_unix.go

@@ -16,7 +16,7 @@ import "C"
 
 type window struct {
 	widget	*C.GtkWidget
-	container	*C.GtkContainer
+	wc		*C.GtkContainer
 	bin		*C.GtkBin
 	window	*C.GtkWindow
 
@@ -24,28 +24,32 @@ type window struct {
 	layoutc	*C.GtkContainer
 	layout	*C.GtkLayout
 
-	child		Control
-
 	closing	*event
 
-	spaced	bool
+	*container
 }
 
-func newWindow(title string, width int, height int) *window {
+type controlParent interface {
+	setParent(*C.GtkContainer)
+}
+
+func newWindow(title string, width int, height int, control Control) *window {
 	widget := C.gtk_window_new(C.GTK_WINDOW_TOPLEVEL)
 	ctitle := togstr(title)
 	defer freegstr(ctitle)
 	layoutw := C.gtk_layout_new(nil, nil)
 	w := &window{
 		widget:		widget,
-		container:		(*C.GtkContainer)(unsafe.Pointer(widget)),
+		wc:			(*C.GtkContainer)(unsafe.Pointer(widget)),
 		bin:			(*C.GtkBin)(unsafe.Pointer(widget)),
 		window:		(*C.GtkWindow)(unsafe.Pointer(widget)),
 		layoutw:		layoutw,
 		layoutc:		(*C.GtkContainer)(unsafe.Pointer(layoutw)),
 		layout:		(*C.GtkLayout)(unsafe.Pointer(layoutw)),
 		closing:		newEvent(),
+		container:		new(container),
 	}
+	w.container.beginResize = w.beginResize
 	C.gtk_window_set_title(w.window, ctitle)
 	g_signal_connect(
 		C.gpointer(unsafe.Pointer(w.window)),
@@ -62,7 +66,9 @@ func newWindow(title string, width int, height int) *window {
 		C.GCallback(C.windowResizing),
 		C.gpointer(unsafe.Pointer(w)))
 	C.gtk_window_resize(w.window, C.gint(width), C.gint(height))
-	C.gtk_container_add(w.container, layoutw)
+	C.gtk_container_add(w.wc, layoutw)
+	w.child = control
+	w.child.setParent(w.layoutc)
 	return w
 }
 
@@ -105,6 +111,6 @@ func windowClosing(wid *C.GtkWidget, e *C.GdkEvent, data C.gpointer) C.gboolean
 //export windowResizing
 func windowResizing(wid *C.GtkWidget, r *C.GdkRectangle, data C.gpointer) {
 	w := (*window)(unsafe.Pointer(data))
-	w.doresize(int(r.width), int(r.height))
+	w.resize(int(r.width), int(r.height))
 	fmt.Printf("new size %d x %d\n", r.width, r.height)
 }