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// 28 february 2014
package ui
import (
"fmt"
"unsafe"
)
// #cgo CFLAGS: -mmacosx-version-min=10.7 -DMACOSX_DEPLOYMENT_TARGET=10.7
// #cgo LDFLAGS: -mmacosx-version-min=10.7 -lobjc -framework Foundation -framework AppKit
// /* application compatibilty stuff via https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/cross_development/Configuring/configuring.html, http://www.cocoawithlove.com/2009/09/building-for-earlier-os-versions-in.html, http://opensource.apple.com/source/xnu/xnu-2422.1.72/EXTERNAL_HEADERS/AvailabilityMacros.h (via http://stackoverflow.com/questions/20485797/what-macro-to-use-to-identify-mavericks-osx-10-9-in-c-c-code), and Beelsebob and LookyLuke_ICBM on irc.freenode.net/#macdev */
// #include "objc_darwin.h"
import "C"
func uiinit() error {
err := initCocoa()
if err != nil {
return err
}
return nil
}
func ui() {
// Cocoa must run on the first thread created by the program, so we run our dispatcher on another thread instead
go func() {
<-Stop
// TODO is this function thread-safe?
C.breakMainLoop()
}()
C.cocoaMainLoop()
}
// we're going to call the appDelegate selector with waitUntilDone:YES so we don't have to worry about garbage collection
// we DO need to collect the two pointers together, though
type uipostmsg struct {
w *Window
data interface{}
}
//export appDelegate_uipost
func appDelegate_uipost(xmsg unsafe.Pointer) {
msg := (*uipostmsg)(xmsg)
msg.w.sysData.post(msg.data)
}
func uipost(w *Window, data interface{}) {
msg := &uipostmsg{
w: w,
data: data,
}
C.uipost(appDelegate, unsafe.Pointer(msg))
}
func initCocoa() (err error) {
makeAppDelegate()
if C.initCocoa(appDelegate) != C.YES {
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)")
}
return nil
}
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