main_darwin.go RawHistoryFolder

1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
3
4package main
5
6import (
7	"fmt"
8	"reflect"
9
10	"github.com/ebitengine/purego/objc"
11)
12
13var (
14	sel_new    = objc.RegisterName("new")
15	sel_init   = objc.RegisterName("init")
16	sel_setBar = objc.RegisterName("setBar:")
17	sel_bar    = objc.RegisterName("bar")
18)
19
20func BarInit(id objc.ID, cmd objc.SEL) objc.ID {
21	return id.SendSuper(cmd)
22}
23
24func main() {
25	// This struct is equivalent to the following Objective-C definition.
26	//
27	// @interface BarObject : NSObject <NSDelegateWindow>
28	// @property (readwrite) bar int
29	// @end
30	class, err := objc.RegisterClass(
31		"BarObject",
32		objc.GetClass("NSObject"),
33		[]*objc.Protocol{
34			objc.GetProtocol("NSDelegateWindow"),
35		},
36		[]objc.FieldDef{
37			{
38				Name:      "bar",
39				Type:      reflect.TypeFor[int](),
40				Attribute: objc.ReadWrite,
41			},
42		},
43		[]objc.MethodDef{
44			{
45				Cmd: sel_init,
46				Fn:  BarInit,
47			},
48		},
49	)
50	if err != nil {
51		panic(err)
52	}
53
54	object := objc.ID(class).Send(sel_new)
55	object.Send(sel_setBar, 123)
56	bar := int(object.Send(sel_bar))
57	fmt.Println(bar)
58	// Output: 123
59}