1 files changed, 88 insertions, 0 deletions
diff --git a/prev/spinbox_darwin.go b/prev/spinbox_darwin.go
new file mode 100644
index 0000000..65274bd
--- /dev/null
+++ b/prev/spinbox_darwin.go
@@ -0,0 +1,88 @@
+// 28 october 2014
+
+package ui
+
+import (
+	"unsafe"
+)
+
+// #include "objc_darwin.h"
+import "C"
+
+// interface builder notes
+// - the tops of the alignment rects should be identical
+// - spinner properties: auto repeat
+// - http://stackoverflow.com/questions/702829/integrate-nsstepper-with-nstextfield we'll need to bind the int value :S
+// 	- TODO experiment with a dummy project
+// - http://juliuspaintings.co.uk/cgi-bin/paint_css/animatedPaint/059-NSStepper-NSTextField.pl
+// - http://www.youtube.com/watch?v=ZZSHU-O7HVo
+// - http://andrehoffmann.wordpress.com/tag/nsstepper/ ?
+// TODO
+// - proper spacing between edit and spinner: Interface Builder isn't clear; NSDatePicker doesn't spill the beans
+
+type spinbox struct {
+	id			C.id
+	changed		*event
+}
+
+func newSpinbox(min int, max int) Spinbox {
+	s := new(spinbox)
+	s.id = C.newSpinbox(unsafe.Pointer(s), C.intmax_t(min), C.intmax_t(max))
+	s.changed = newEvent()
+	return s
+}
+
+func (s *spinbox) Value() int {
+	return int(C.spinboxValue(s.id))
+}
+
+func (s *spinbox) SetValue(value int) {
+	C.spinboxSetValue(s.id, C.intmax_t(value))
+}
+
+func (s *spinbox) OnChanged(e func()) {
+	s.changed.set(e)
+}
+
+//export spinboxChanged
+func spinboxChanged(data unsafe.Pointer) {
+	s := (*spinbox)(data)
+	s.changed.fire()
+}
+
+func (s *spinbox) textfield() C.id {
+	return C.spinboxTextField(s.id)
+}
+
+func (s *spinbox) stepper() C.id {
+	return C.spinboxStepper(s.id)
+}
+
+func (s *spinbox) setParent(p *controlParent) {
+	C.parent(s.textfield(), p.id)
+	C.parent(s.stepper(), p.id)
+}
+
+func (s *spinbox) preferredSize(d *sizing) (width, height int) {
+	// TODO
+	return 20, 20
+}
+
+func (s *spinbox) resize(x int, y int, width int, height int, d *sizing) {
+	// TODO
+	C.moveControl(s.textfield(), C.intptr_t(x), C.intptr_t(y), C.intptr_t(width - 20), C.intptr_t(height))
+	C.moveControl(s.stepper(), C.intptr_t(x + width - 15), C.intptr_t(y), C.intptr_t(15), C.intptr_t(height))
+}
+
+func (s *spinbox) nTabStops() int {
+	// TODO does the stepper count?
+	return 1
+}
+
+func (s *spinbox) containerShow() {
+	// only provided for the Windows backend
+}
+
+func (s *spinbox) containerHide() {
+	// only provided for the Windows backend
+}