First Commit

libui-ng/unix/spinbox.c

@@ -0,0 +1,72 @@
+// 11 june 2015
+#include "uipriv_unix.h"
+
+struct uiSpinbox {
+	uiUnixControl c;
+	GtkWidget *widget;
+	GtkEntry *entry;
+	GtkSpinButton *spinButton;
+	void (*onChanged)(uiSpinbox *, void *);
+	void *onChangedData;
+	gulong onChangedSignal;
+};
+
+uiUnixControlAllDefaults(uiSpinbox)
+
+static void onChanged(GtkSpinButton *sb, gpointer data)
+{
+	uiSpinbox *s = uiSpinbox(data);
+
+	(*(s->onChanged))(s, s->onChangedData);
+}
+
+static void defaultOnChanged(uiSpinbox *s, void *data)
+{
+	// do nothing
+}
+
+int uiSpinboxValue(uiSpinbox *s)
+{
+	return gtk_spin_button_get_value(s->spinButton);
+}
+
+void uiSpinboxSetValue(uiSpinbox *s, int value)
+{
+	// we need to inhibit sending of ::value-changed because this WILL send a ::value-changed otherwise
+	g_signal_handler_block(s->spinButton, s->onChangedSignal);
+	// this clamps for us
+	gtk_spin_button_set_value(s->spinButton, (gdouble) value);
+	g_signal_handler_unblock(s->spinButton, s->onChangedSignal);
+}
+
+void uiSpinboxOnChanged(uiSpinbox *s, void (*f)(uiSpinbox *, void *), void *data)
+{
+	s->onChanged = f;
+	s->onChangedData = data;
+}
+
+uiSpinbox *uiNewSpinbox(int min, int max)
+{
+	uiSpinbox *s;
+	int temp;
+
+	if (min >= max) {
+		temp = min;
+		min = max;
+		max = temp;
+	}
+
+	uiUnixNewControl(uiSpinbox, s);
+
+	s->widget = gtk_spin_button_new_with_range(min, max, 1);
+	s->entry = GTK_ENTRY(s->widget);
+	s->spinButton = GTK_SPIN_BUTTON(s->widget);
+
+	// ensure integers, just to be safe
+	gtk_spin_button_set_digits(s->spinButton, 0);
+
+	s->onChangedSignal = g_signal_connect(s->spinButton, "value-changed", G_CALLBACK(onChanged), s);
+	uiSpinboxOnChanged(s, defaultOnChanged, NULL);
+
+	return s;
+}