58 lines
1.1 KiB
Go
58 lines
1.1 KiB
Go
// 28 february 2014
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package ui
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import (
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"fmt"
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"runtime"
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"unsafe"
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)
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// #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
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// #include "objc_darwin.h"
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import "C"
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var uitask chan func()
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func ui(main func()) error {
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runtime.LockOSThread()
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uitask = make(chan func())
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err := initCocoa()
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if err != nil {
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return err
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}
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// Cocoa must run on the first thread created by the program, so we run our dispatcher on another thread instead
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go func() {
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for f := range uitask {
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C.douitask(appDelegate, unsafe.Pointer(&f))
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}
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}()
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go func() {
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main()
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uitask <- func() {
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C.breakMainLoop()
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}
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}()
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C.cocoaMainLoop()
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return nil
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}
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func initCocoa() (err error) {
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makeAppDelegate()
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if C.initCocoa(appDelegate) != C.YES {
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return fmt.Errorf("error setting NSApplication activation policy (basically identifies our program as a separate program; needed for several things, such as Dock icon, application menu, window resizing, etc.) (unknown reason)")
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}
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return nil
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}
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//export appDelegate_uitask
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func appDelegate_uitask(p unsafe.Pointer) {
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f := (*func ())(unsafe.Pointer(p))
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(*f)()
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}
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