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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"
// the performSelectorOnMainThread: in our uitask functions is told to wait until the action is done before it returns
// so we're fine keeping this on the Go side since the GC won't collect it from under us
type uitaskParams struct {
window *Window // createWindow
control Control // createWindow
show bool // createWindow
}
//export uitask_createWindow
func uitask_createWindow(data unsafe.Pointer) {
uc := (*uitaskParams)(data)
uc.window.create(uc.control, uc.show)
}
func (_uitask) createWindow(w *Window, c Control, s bool) {
uc := &uitaskParams{
window: w,
control: c,
show: s,
}
C.douitask(appDelegate, C.createWindow, unsafe.Pointer(uc))
}
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()
}
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
}
//export appDelegate_uitask
func appDelegate_uitask(p unsafe.Pointer) {
f := (*func())(unsafe.Pointer(p))
(*f)()
}
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