First Commit

libui-ng/unix/radiobuttons.c

@@ -0,0 +1,121 @@
+// 11 june 2015
+#include "uipriv_unix.h"
+
+// on GTK+ a uiRadioButtons is a GtkBox with each of the GtkRadioButtons as children
+
+struct uiRadioButtons {
+	uiUnixControl c;
+	GtkWidget *widget;
+	GtkContainer *container;
+	GtkBox *box;
+	GPtrArray *buttons;
+	void (*onSelected)(uiRadioButtons *, void *);
+	void *onSelectedData;
+	gboolean changing;
+};
+
+uiUnixControlAllDefaultsExceptDestroy(uiRadioButtons)
+
+static void defaultOnSelected(uiRadioButtons *r, void *data)
+{
+	// do nothing
+}
+
+static void onToggled(GtkToggleButton *tb, gpointer data)
+{
+	uiRadioButtons *r = uiRadioButtons(data);
+
+	// only care if a button is selected
+	if (!gtk_toggle_button_get_active(tb))
+		return;
+	// ignore programmatic changes
+	if (r->changing)
+		return;
+	(*(r->onSelected))(r, r->onSelectedData);
+}
+
+static void uiRadioButtonsDestroy(uiControl *c)
+{
+	uiRadioButtons *r = uiRadioButtons(c);
+	GtkWidget *b;
+
+	while (r->buttons->len != 0) {
+		b = GTK_WIDGET(g_ptr_array_remove_index(r->buttons, 0));
+		gtk_widget_destroy(b);
+	}
+	g_ptr_array_free(r->buttons, TRUE);
+	// and free ourselves
+	g_object_unref(r->widget);
+	uiFreeControl(uiControl(r));
+}
+
+void uiRadioButtonsAppend(uiRadioButtons *r, const char *text)
+{
+	GtkWidget *rb;
+	GtkRadioButton *previous;
+
+	previous = NULL;
+	if (r->buttons->len > 0)
+		previous = GTK_RADIO_BUTTON(g_ptr_array_index(r->buttons, 0));
+	rb = gtk_radio_button_new_with_label_from_widget(previous, text);
+	g_signal_connect(rb, "toggled", G_CALLBACK(onToggled), r);
+	gtk_container_add(r->container, rb);
+	g_ptr_array_add(r->buttons, rb);
+	gtk_widget_show(rb);
+}
+
+int uiRadioButtonsSelected(uiRadioButtons *r)
+{
+	GtkToggleButton *tb;
+	guint i;
+
+	for (i = 0; i < r->buttons->len; i++) {
+		tb = GTK_TOGGLE_BUTTON(g_ptr_array_index(r->buttons, i));
+		if (gtk_toggle_button_get_active(tb))
+			return i;
+	}
+	return -1;
+}
+
+void uiRadioButtonsSetSelected(uiRadioButtons *r, int n)
+{
+	GtkToggleButton *tb;
+	gboolean active;
+
+	active = TRUE;
+	// TODO this doesn't work
+	if (n == -1) {
+		n = uiRadioButtonsSelected(r);
+		if (n == -1)		// no selection; keep it that way
+			return;
+		active = FALSE;
+	}
+	tb = GTK_TOGGLE_BUTTON(g_ptr_array_index(r->buttons, n));
+	// this is easier than remembering all the signals
+	r->changing = TRUE;
+	gtk_toggle_button_set_active(tb, active);
+	r->changing = FALSE;
+}
+
+void uiRadioButtonsOnSelected(uiRadioButtons *r, void (*f)(uiRadioButtons *, void *), void *data)
+{
+	r->onSelected = f;
+	r->onSelectedData = data;
+}
+
+uiRadioButtons *uiNewRadioButtons(void)
+{
+	uiRadioButtons *r;
+
+	uiUnixNewControl(uiRadioButtons, r);
+
+	r->widget = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+	r->container = GTK_CONTAINER(r->widget);
+	r->box = GTK_BOX(r->widget);
+
+	r->buttons = g_ptr_array_new();
+
+	uiRadioButtonsOnSelected(r, defaultOnSelected, NULL);
+
+	return r;
+}