Added uiTab to the GTK+ backend.

tab_unix.c

@@ -0,0 +1,64 @@
+// 12 april 2015
+#include "uipriv_unix.h"
+
+struct tab {
+	struct tabPage *pages;
+	uintmax_t len;
+	uintmax_t cap;
+};
+
+struct tabPage {
+	GtkWidget *container;
+};
+
+static void onDestroy(GtkWidget *widget, gpointer data)
+{
+	struct tab *t = (struct tab *) data;
+
+	uiFree(t->pages);
+	uiFree(t);
+}
+
+uiControl *uiNewTab(void)
+{
+	uiControl *c;
+	struct tab *t;
+	GtkWidget *widget;
+
+	c = uiUnixNewControl(GTK_TYPE_NOTEBOOK,
+		FALSE, FALSE,
+		NULL);
+
+	widget = GTK_WIDGET(uiControlHandle(c));
+
+	t = uiNew(struct tab);
+	g_signal_connect(widget, "destroy", G_CALLBACK(onDestroy), t);
+	c->data = t;
+
+	return c;
+}
+
+#define tabCapGrow 32
+
+void uiTabAddPage(uiControl *c, const char *name, uiControl *child)
+{
+	struct tab *t = (struct tab *) (c->data);
+	GtkWidget *notebook;
+	GtkWidget *container;
+
+	if (t->len >= t->cap) {
+		t->cap += tabCapGrow;
+		t->pages = (struct tabPage *) uiRealloc(t->pages, t->cap * sizeof (struct tabPage), "struct tabPage[]");
+	}
+
+	container = newContainer();
+	uiContainer(container)->child = child;
+	uiControlSetParent(uiContainer(container)->child, (uintptr_t) (container));
+	notebook = GTK_WIDGET(uiControlHandle(c));
+	gtk_container_add(GTK_CONTAINER(notebook), container);
+	gtk_notebook_set_tab_label_text(GTK_NOTEBOOK(notebook), container, name);
+	gtk_widget_show_all(container);
+
+	t->pages[t->len].container = container;
+	t->len++;
+}