1 files changed, 55 insertions, 0 deletions
diff --git a/spinbox.go b/spinbox.go
new file mode 100644
index 0000000..a7161f3
--- /dev/null
+++ b/spinbox.go
@@ -0,0 +1,55 @@
+// 12 december 2015
+
+package ui
+
+import (
+	"unsafe"
+)
+
+// #include "pkgui.h"
+import "C"
+
+// Spinbox is a Control that represents a space where the user can
+// enter integers. The space also comes with buttons to add or
+// subtract 1 from the integer.
+type Spinbox struct {
+	ControlBase
+	s	*C.uiSpinbox
+	onChanged		func(*Spinbox)
+}
+
+// NewSpinbox creates a new Spinbox. If min >= max, they are swapped.
+func NewSpinbox(min int, max int) *Spinbox {
+	s := new(Spinbox)
+
+	s.s = C.uiNewSpinbox(C.int(min), C.int(max))
+
+	C.pkguiSpinboxOnChanged(s.s)
+
+	s.ControlBase = NewControlBase(s, uintptr(unsafe.Pointer(s.s)))
+	return s
+}
+
+// Value returns the Spinbox's current value.
+func (s *Spinbox) Value() int {
+	return int(C.uiSpinboxValue(s.s))
+}
+
+// SetValue sets the Spinbox's current value to value.
+func (s *Spinbox) SetValue(value int) {
+	C.uiSpinboxSetValue(s.s, C.int(value))
+}
+
+// OnChanged registers f to be run when the user changes the value
+// of the Spinbox. Only one function can be registered at a time.
+func (s *Spinbox) OnChanged(f func(*Spinbox)) {
+	s.onChanged = f
+}
+
+//export pkguiDoSpinboxOnChanged
+func pkguiDoSpinboxOnChanged(ss *C.uiSpinbox, data unsafe.Pointer) {
+	s := ControlFromLibui(uintptr(unsafe.Pointer(ss))).(*Spinbox)
+	if s.onChanged != nil {
+		s.onChanged(s)
+	}
+}