Now that we have everything up to and including Buttons up and running, we no longer need the darwintest.

This commit is contained in:
Pietro Gagliardi 2014-03-01 22:40:14 -05:00
parent 4599e0d25e
commit 3e44abc1b8
6 changed files with 0 additions and 405 deletions

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/* 28 february 2014 */
/*
I wanted to avoid invoking Objective-C directly, preferring to do everything directly with the API. However, there are some things that simply cannot be done too well; for those situations, there's this. It does use the Objective-C runtime, eschewing the actual Objective-C part of this being an Objective-C file.
The main culprits are:
- data types listed as being defined in nonexistent headers
- 32-bit/64-bit type differences that are more than just a different typedef
Go wrapper functions (bleh_darwin.go) call these directly and take care of stdint.h -> Go type conversions.
*/
#include <objc/message.h>
#include <objc/objc.h>
#include <objc/runtime.h>
#include <stdint.h>
#include <Foundation/NSGeometry.h>
/*
NSUInteger is listed as being in <objc/NSObjCRuntime.h>... which doesn't exist. Rather than relying on undocumented header file locations or explicitly typedef-ing NSUInteger to the (documented) unsigned long, I'll just place things here for maximum safety. I use uintptr_t as that should encompass every possible unsigned long.
*/
id _objc_msgSend_uint(id obj, SEL sel, uintptr_t a)
{
return objc_msgSend(obj, sel, (NSUInteger) a);
}
/*
These are the objc_msgSend() wrappers around NSRect. The problem is that while on 32-bit systems, NSRect is a concrete structure, on 64-bit systems it's just a typedef to CGRect. While in practice just using CGRect everywhere seems to work, better to be safe than sorry.
I use int64_t for maximum safety, as my coordinates are stored as Go ints and Go int -> C int (which is what is documented as happening) isn't reliable.
*/
#define OurRect() (NSMakeRect((CGFloat) x, (CGFloat) y, (CGFloat) w, (CGFloat) h))
id _objc_msgSend_rect(id obj, SEL sel, int64_t x, int64_t y, int64_t w, int64_t h)
{
return objc_msgSend(obj, sel, OurRect());
}
id _objc_msgSend_rect_uint_uint_bool(id obj, SEL sel, int64_t x, int64_t y, int64_t w, int64_t h, uintptr_t b, uintptr_t c, BOOL d)
{
return objc_msgSend(obj, sel, OurRect(), (NSUInteger) b, (NSUInteger) c, d);
}

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// 28 february 2014
package main
import (
"fmt"
)
// #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
// #include "objc_darwin.h"
// extern void windowShouldClose(id, SEL, id);
// extern void buttonClicked(id, SEL, id);
// extern void gotNotification(id, SEL, id);
import "C"
// TODO move these around later
var (
_stop = sel_getUid("stop:")
)
//export windowShouldClose
func windowShouldClose(self C.id, sel C.SEL, sender C.id) {
fmt.Println("-[hello windowShouldClose:]")
C.objc_msgSend_id(NSApp, _stop, sender)
}
//export buttonClicked
func buttonClicked(self C.id, sel C.SEL, sender C.id) {
fmt.Println("button clicked; sending notification...")
notify("button")
}
//export gotNotification
func gotNotification(self C.id, sel C.SEL, object C.id) {
fmt.Printf("got notification from %s\n", fromNSString(object))
}
func mk(name string, selW C.SEL, selB C.SEL, selN C.SEL) C.id {
class := newClass(name)
addDelegateMethod(class, selW, C.windowShouldClose)
addDelegateMethod(class, selB, C.buttonClicked)
addDelegateMethod(class, selN, C.gotNotification)
return objc_getClass(name)
}

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// 27 february 2014
package main
import (
"unsafe"
)
// #cgo LDFLAGS: -lobjc -framework Foundation
// #include <stdlib.h>
// #include "objc_darwin.h"
// /* because cgo doesn't like Nil */
// Class NilClass = Nil;
import "C"
var (
_NSObject_Class = C.object_getClass(_NSObject)
)
func newClass(name string) C.Class {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
c := C.objc_allocateClassPair(_NSObject_Class, cname, 0)
if c == C.NilClass {
panic("unable to create Objective-C class " + name)
}
C.objc_registerClassPair(c)
return c
}
// according to errors spit out by cgo, C function pointers are unsafe.Pointer
func addDelegateMethod(class C.Class, sel C.SEL, imp unsafe.Pointer) {
// maps to void (*)(id, SEL, id)
ty := []C.char{'v', '@', ':', '@', 0}
// clas methods get stored in the metaclass; the objc_allocateClassPair() docs say this will work
// metaclass := C.object_getClass(C.id(unsafe.Pointer(class)))
// we're adding instance methods, so just class will do
ok := C.class_addMethod(class,
sel,
C.IMP(imp),
&ty[0])
if ok == C.BOOL(C.NO) {
panic("unable to add ourMethod")
}
}

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// 28 february 2014
package main
import (
"unsafe"
)
// #cgo LDFLAGS: -lobjc -framework Foundation
// #include <stdlib.h>
// #include "objc_darwin.h"
import "C"
func objc_getClass(class string) C.id {
cclass := C.CString(class)
defer C.free(unsafe.Pointer(cclass))
return C.objc_getClass(cclass)
}
func sel_getUid(sel string) C.SEL {
csel := C.CString(sel)
defer C.free(unsafe.Pointer(csel))
return C.sel_getUid(csel)
}
// Common Objective-C types and selectors.
var (
_NSObject = objc_getClass("NSObject")
_NSString = objc_getClass("NSString")
_alloc = sel_getUid("alloc")
_new = sel_getUid("new")
_release = sel_getUid("release")
_stringWithUTF8String = sel_getUid("stringWithUTF8String:")
_UTF8String = sel_getUid("UTF8String")
)
// some helper functions
func objc_alloc(class C.id) C.id {
return C.objc_msgSend_noargs(class, _alloc)
}
func objc_new(class C.id) C.id {
return C.objc_msgSend_noargs(class, _new)
}
func objc_release(obj C.id) {
C.objc_msgSend_noargs(obj, _release)
}
func toNSString(str string) C.id {
cstr := C.CString(str)
defer C.free(unsafe.Pointer(cstr))
return C.objc_msgSend_str(_NSString,
_stringWithUTF8String,
cstr)
}
func fromNSString(str C.id) string {
cstr := C.objc_msgSend_noargs(str, _UTF8String)
return C.GoString((*C.char)(unsafe.Pointer(cstr)))
}
/*
These are wrapper functions for the functions in bleh_darwin.m to wrap around stdint.h type casting.
*/
func objc_msgSend_rect(obj C.id, sel C.SEL, x int, y int, w int, h int) C.id {
return C._objc_msgSend_rect(obj, sel,
C.int64_t(x), C.int64_t(y), C.int64_t(w), C.int64_t(h))
}
func objc_msgSend_uint(obj C.id, sel C.SEL, a uintptr) C.id {
return C._objc_msgSend_uint(obj, sel, C.uintptr_t(a))
}
func objc_msgSend_rect_uint_uint_bool(obj C.id, sel C.SEL, x int, y int, w int, h int, b uintptr, c uintptr, d C.BOOL) C.id {
return C._objc_msgSend_rect_uint_uint_bool(obj, sel,
C.int64_t(x), C.int64_t(y), C.int64_t(w), C.int64_t(h),
C.uintptr_t(b), C.uintptr_t(c), d)
}

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/* 28 february 2014 */
/*
This includes all Objective-C runtime headers for convenience. It also creates wrappers around objc_msgSend() out of necessity.
cgo doesn't support calling variable argument list C functions, so objc_msgSend() cannot be called directly.
Furthermore, Objective-C selectors work by basically sending the arguments to objc_msgSend() verbatim across the wire. This basically means we're stuck making wrapper functions for every possible argument list. What fun!
The format should be self-explanatory.
*/
#include <objc/message.h>
#include <objc/objc.h>
#include <objc/runtime.h>
#include <stdint.h>
inline id objc_msgSend_noargs(id obj, SEL sel)
{
return objc_msgSend(obj, sel);
}
#define m1(name, type1) \
inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a) \
{ \
return objc_msgSend(obj, sel, a); \
}
#define m2(name, type1, type2) \
inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b) \
{ \
return objc_msgSend(obj, sel, a, b); \
}
#define m3(name, type1, type2, type3) \
inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b, type3 c) \
{ \
return objc_msgSend(obj, sel, a, b, c); \
}
#define m4(name, type1, type2, type3, type4) \
inline id objc_msgSend_ ## name (id obj, SEL sel, type1 a, type2 b, type3 c, type4 d) \
{ \
return objc_msgSend(obj, sel, a, b, c, d); \
}
m1(str, char *) /* TODO Go string? */
m1(id, id)
extern id _objc_msgSend_rect(id obj, SEL sel, int64_t x, int64_t y, int64_t w, int64_t h);
m1(sel, SEL)
extern id _objc_msgSend_uint(id obj, SEL sel, uintptr_t a);
m2(id_id, id, id)
m3(id_id_id, id, id, id)
m3(sel_id_bool, SEL, id, BOOL)
extern id _objc_msgSend_rect_uint_uint_bool(id obj, SEL sel, int64_t x, int64_t y, int64_t w, int64_t h, uintptr_t b, uintptr_t c, BOOL d);
m4(id_sel_id_id, id, SEL, id, id)

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// 27 february 2014
package main
import (
"fmt"
"time"
)
// #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
// #include <stdlib.h>
// #include "objc_darwin.h"
import "C"
var (
_NSApplication = objc_getClass("NSApplication")
_sharedApplication = sel_getUid("sharedApplication")
_run = sel_getUid("run")
)
var NSApp C.id
var delegate C.id
var notesel C.SEL
func init() {
// need an NSApplication first - see https://github.com/TooTallNate/NodObjC/issues/21
NSApp = C.objc_msgSend_noargs(_NSApplication, _sharedApplication)
selW := sel_getUid("windowShouldClose:")
selB := sel_getUid("buttonClicked:")
selN := sel_getUid("gotNotification:")
mk("hello", selW, selB, selN)
delegate = objc_alloc(objc_getClass("hello"))
notesel = selN
}
const (
NSBorderlessWindowMask = 0
NSTitledWindowMask = 1 << 0
NSClosableWindowMask = 1 << 1
NSMiniaturizableWindowMask = 1 << 2
NSResizableWindowMask = 1 << 3
NSTexturedBackgroundWindowMask = 1 << 8
)
const (
// NSBackingStoreRetained = 0 // "You should not use this mode."
// NSBackingStoreNonretained = 1 // "You should not use this mode."
NSBackingStoreBuffered = 2
)
const (
NSRoundedBezelStyle = 1
// TODO copy in the rest?
)
var (
_NSAutoreleasePool = objc_getClass("NSAutoreleasePool")
_performSelectorOnMainThread =
sel_getUid("performSelectorOnMainThread:withObject:waitUntilDone:")
)
func notify(source string) {
// we need to make an NSAutoreleasePool, otherwise we get leak warnings on stderr
pool := objc_new(_NSAutoreleasePool)
src := toNSString(source)
C.objc_msgSend_sel_id_bool(
delegate,
_performSelectorOnMainThread,
notesel,
src,
C.BOOL(C.YES)) // wait so we can properly drain the autorelease pool; on other platforms we wind up waiting anyway (since the main thread can only handle one thing at a time) so
objc_release(pool)
}
var (
_NSWindow = objc_getClass("NSWindow")
_NSButton = objc_getClass("NSButton")
_initWithContentRect = sel_getUid("initWithContentRect:styleMask:backing:defer:")
_setDelegate = sel_getUid("setDelegate:")
_makeKeyAndOrderFront = sel_getUid("makeKeyAndOrderFront:")
_contentView = sel_getUid("contentView")
_initWithFrame = sel_getUid("initWithFrame:")
_setTarget = sel_getUid("setTarget:")
_setAction = sel_getUid("setAction:")
_setBezelStyle = sel_getUid("setBezelStyle:")
_addSubview = sel_getUid("addSubview:")
)
func main() {
style := uintptr(NSTitledWindowMask | NSClosableWindowMask)
backing := uintptr(NSBackingStoreBuffered)
deferx := C.BOOL(C.YES)
window := objc_alloc(_NSWindow)
window = objc_msgSend_rect_uint_uint_bool(window,
_initWithContentRect,
100, 100, 320, 240,
style, backing, deferx)
C.objc_msgSend_id(window, _makeKeyAndOrderFront, window)
C.objc_msgSend_id(window, _setDelegate, delegate)
windowView := C.objc_msgSend_noargs(window, _contentView)
button := objc_alloc(_NSButton)
button = objc_msgSend_rect(button,
_initWithFrame,
20, 20, 200, 200)
C.objc_msgSend_id(button, _setTarget, delegate)
C.objc_msgSend_sel(button,
_setAction,
sel_getUid("buttonClicked:"))
objc_msgSend_uint(button, _setBezelStyle, NSRoundedBezelStyle)
C.objc_msgSend_id(windowView, _addSubview, button)
go func() {
for {
<-time.After(5 * time.Second)
fmt.Println("five seconds passed; sending notification...")
notify("timer")
}
}()
C.objc_msgSend_noargs(NSApp, _run)
}