main_darwin.go RawHistoryFolder

1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: 2024 The Ebitengine Authors
3
4package main
5
6import (
7	"runtime"
8	"structs"
9
10	"github.com/ebitengine/purego"
11	"github.com/ebitengine/purego/objc"
12)
13
14const (
15	NSApplicationActivationPolicyRegular = 0
16	NSWindowStyleMaskTitled              = 1 << 0
17	NSBackingStoreBuffered               = 2
18)
19
20type NSPoint struct {
21	_    structs.HostLayout
22	X, Y float64
23}
24
25type NSSize struct {
26	_             structs.HostLayout
27	Width, Height float64
28}
29
30type NSRect struct {
31	_      structs.HostLayout
32	Origin NSPoint
33	Size   NSSize
34}
35
36func init() {
37	runtime.LockOSThread()
38}
39
40func main() {
41	if _, err := purego.Dlopen("/System/Library/Frameworks/Cocoa.framework/Cocoa", purego.RTLD_GLOBAL|purego.RTLD_LAZY); err != nil {
42		panic(err)
43	}
44	nsApp := objc.ID(objc.GetClass("NSApplication")).Send(objc.RegisterName("sharedApplication"))
45	nsApp.Send(objc.RegisterName("setActivationPolicy:"), NSApplicationActivationPolicyRegular)
46	wnd := objc.ID(objc.GetClass("NSWindow")).Send(objc.RegisterName("alloc"))
47	wnd = wnd.Send(objc.RegisterName("initWithContentRect:styleMask:backing:defer:"),
48		NSMakeRect(0, 0, 320, 240),
49		NSWindowStyleMaskTitled,
50		NSBackingStoreBuffered,
51		false,
52	)
53
54	title := objc.ID(objc.GetClass("NSString")).Send(objc.RegisterName("stringWithUTF8String:"), "My Title")
55	wnd.Send(objc.RegisterName("setTitle:"), title)
56	wnd.Send(objc.RegisterName("makeKeyAndOrderFront:"), objc.ID(0))
57	wnd.Send(objc.RegisterName("center"))
58	nsApp.Send(objc.RegisterName("activateIgnoringOtherApps:"), true)
59	nsApp.Send(objc.RegisterName("run"))
60}
61
62func NSMakeRect(x, y, width, height float64) NSRect {
63	return NSRect{Origin: NSPoint{X: x, Y: y}, Size: NSSize{Width: width, Height: height}}
64}