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// 27 february 2014
package ui
import (
// ...
)
/*
This creates a class goAppDelegate that will be used as the delegate for /everything/. Specifically, it:
- runs uitask requests (uitask:)
- handles window close events (windowShouldClose:)
- handles window resize events (windowDidResize:)
- handles button click events (buttonClicked:)
- handles the application-global Quit event (such as from the Dock) (applicationShouldTerminate)
*/
// #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
// #include <stdlib.h>
// #include "objc_darwin.h"
// #include "delegateuitask_darwin.h"
import "C"
var (
appDelegate C.id
)
const (
_goAppDelegate = "goAppDelegate"
)
var (
_uitask = sel_getUid("uitask:") // used by uitask_darwin.go
_buttonClicked = sel_getUid("buttonClicked:") // used by sysdata_darwin.go
)
func mkAppDelegate() error {
appDelegate = C.makeAppDelegate()
return nil
}
//export appDelegate_windowShouldClose
func appDelegate_windowShouldClose(win C.id) {
sysData := getSysData(win)
sysData.signal()
}
var (
_object = sel_getUid("object")
_display = sel_getUid("display")
)
//export appDelegate_windowDidResize
func appDelegate_windowDidResize(win C.id) {
s := getSysData(win)
wincv := C.windowGetContentView(win) // we want the content view's size, not the window's
r := C.objc_msgSend_stret_rect_noargs(wincv, _frame)
// winheight is used here because (0,0) is the bottom-left corner, not the top-left corner
s.doResize(0, 0, int(r.width), int(r.height), int(r.height))
C.objc_msgSend_noargs(win, _display) // redraw everything; TODO only if resize() was called?
}
//export appDelegate_buttonClicked
func appDelegate_buttonClicked(button C.id) {
sysData := getSysData(button)
sysData.signal()
}
//export appDelegate_applicationShouldTerminate
func appDelegate_applicationShouldTerminate() {
// asynchronous so as to return control to the event loop
go func() {
AppQuit <- struct{}{}
}()
}
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