56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
// 12 december 2015
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package ui
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import (
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"unsafe"
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)
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// #include "pkgui.h"
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import "C"
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// Spinbox is a Control that represents a space where the user can
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// enter integers. The space also comes with buttons to add or
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// subtract 1 from the integer.
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type Spinbox struct {
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ControlBase
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s *C.uiSpinbox
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onChanged func(*Spinbox)
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}
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// NewSpinbox creates a new Spinbox. If min >= max, they are swapped.
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func NewSpinbox(min int, max int) *Spinbox {
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s := new(Spinbox)
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s.s = C.uiNewSpinbox(C.int(min), C.int(max))
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C.pkguiSpinboxOnChanged(s.s)
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s.ControlBase = NewControlBase(s, uintptr(unsafe.Pointer(s.s)))
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return s
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}
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// Value returns the Spinbox's current value.
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func (s *Spinbox) Value() int {
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return int(C.uiSpinboxValue(s.s))
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}
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// SetValue sets the Spinbox's current value to value.
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func (s *Spinbox) SetValue(value int) {
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C.uiSpinboxSetValue(s.s, C.int(value))
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}
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// OnChanged registers f to be run when the user changes the value
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// of the Spinbox. Only one function can be registered at a time.
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func (s *Spinbox) OnChanged(f func(*Spinbox)) {
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s.onChanged = f
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}
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//export pkguiDoSpinboxOnChanged
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func pkguiDoSpinboxOnChanged(ss *C.uiSpinbox, data unsafe.Pointer) {
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s := ControlFromLibui(uintptr(unsafe.Pointer(ss))).(*Spinbox)
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if s.onChanged != nil {
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s.onChanged(s)
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}
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}
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