Attempted to add the Area bare bones and resizing code to the Mac OS X backend. It complains that initWithFrame: is not implemented...

area_darwin.go

@@ -15,15 +15,17 @@ import (
 import "C"
 
 const (
-	_goArea = "goArea"
+	__goArea = "goArea"
 )
 
 var (
+	_goArea C.id
+
 	_drawRect = sel_getUid("drawRect:")
 )
 
 func mkAreaClass() error {
-	areaclass, err := makeAreaClass(_goArea)
+	areaclass, err := makeAreaClass(__goArea)
 	if err != nil {
 		return fmt.Errorf("error creating Area backend class: %v", err)
 	}
@@ -33,12 +35,43 @@ func mkAreaClass() error {
 	if ok != C.BOOL(C.YES) {
 		return fmt.Errorf("error overriding Area drawRect: method; reason unknown")
 	}
+	_goArea = objc_getClass(__goArea)
 	return nil
 }
 
 //export areaView_drawRect
 func areaView_drawRect(self C.id, rect C.struct_xrect) {
 	// TODO
+fmt.Println(rect)
+}
+
+// TODO combine these with the listbox functions?
+
+func newAreaScrollView(area C.id) C.id {
+	scrollview := objc_alloc(_NSScrollView)
+	scrollview = objc_msgSend_rect(scrollview, _initWithFrame,
+		0, 0, 100, 100)
+	C.objc_msgSend_bool(scrollview, _setHasHorizontalScroller, C.BOOL(C.YES))
+	C.objc_msgSend_bool(scrollview, _setHasVerticalScroller, C.BOOL(C.YES))
+	C.objc_msgSend_bool(scrollview, _setAutohidesScrollers, C.BOOL(C.YES))
+	C.objc_msgSend_id(scrollview, _setDocumentView, area)
+	return scrollview
+}
+
+func areaInScrollView(scrollview C.id) C.id {
+	return C.objc_msgSend_noargs(scrollview, _documentView)
+}
+
+func makeArea(parentWindow C.id, alternate bool) C.id {
+	area := objc_alloc(_goArea)
+println(area)
+	area = objc_msgSend_rect(area, _initWithFrame,
+		0, 0, 100, 100)
+println("out")
+	// TODO others?
+	area = newAreaScrollView(area)
+	addControl(parentWindow, area)
+	return area
 }
 
 // TODO combine the below with the delegate stuff

bleh_darwin.m

@@ -93,6 +93,7 @@ struct xrect objc_msgSend_stret_rect_noargs(id obj, SEL sel)
 
 id _objc_msgSend_rect(id obj, SEL sel, int64_t x, int64_t y, int64_t w, int64_t h)
 {
+printf("%s\n", class_getName(objc_getMetaClass("goArea")));
 	return objc_msgSend(obj, sel, OurRect());
 }
 

sysdata_darwin.go

@@ -20,6 +20,7 @@ type sysData struct {
 
 type classData struct {
 	make		func(parentWindow C.id, alternate bool) C.id
+	getinside		func(scrollview C.id) C.id
 	show		func(what C.id)
 	hide			func(what C.id)
 	settextsel		C.SEL
@@ -269,6 +270,12 @@ var classTypes = [nctypes]*classData{
 		show:		controlShow,
 		hide:			controlHide,
 	},
+	c_area:			&classData{
+		make:		makeArea,
+		getinside:		areaInScrollView,
+		show:		controlShow,
+		hide:			controlHide,
+	},
 }
 
 // I need to access sysData from appDelegate, but appDelegate doesn't store any data. So, this.
@@ -308,7 +315,14 @@ func (s *sysData) make(initText string, window *sysData) error {
 	}
 	s.id = <-ret
 	s.setText(initText)
-	addSysData(s.id, s)
+	if ct.getinside != nil {
+		uitask <- func() {
+			ret <- ct.getinside(s.id)
+		}
+		addSysData(<-ret, s)
+	} else {
+		addSysData(s.id, s)
+	}
 	return nil
 }
 
@@ -483,3 +497,17 @@ func (s *sysData) len() int {
 	}
 	return <-ret
 }
+
+func (s *sysData) setAreaSize(width int, height int) {
+	ret := make(chan struct{})
+	defer close(ret)
+	uitask <- func() {
+		area := areaInScrollView(s.id)
+println(C.GoString(C.object_getClassName(area)))
+		objc_msgSend_rect_bool(area, _setFrameDisplay,
+			int(0), int(0), width, height,
+			C.BOOL(C.YES))		// redraw
+		ret <- struct{}{}
+	}
+	<-ret
+}

uitask_darwin.go

@@ -93,6 +93,10 @@ func initCocoa() (NSApp C.id, err error) {
 	}
 	C.objc_msgSend_bool(NSApp, _activateIgnoringOtherApps, C.BOOL(C.YES))		// TODO actually do C.NO here? Russ Cox does YES in his devdraw; the docs say the Finder does NO
 	err = mkAppDelegate()
+	if err != nil {
+		return
+	}
+	err = mkAreaClass()
 	return
 }