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// 29 march 2014
package ui
import (
"fmt"
"unsafe"
)
// #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
// #include <stdlib.h>
//// #include <HIToolbox/Events.h>
// #include "objc_darwin.h"
// extern void areaView_drawRect(id, struct xrect);
import "C"
const (
__goArea = "goArea"
)
var (
_goArea C.id
_drawRect = sel_getUid("drawRect:")
)
func mkAreaClass() error {
areaclass, err := makeAreaClass(__goArea)
if err != nil {
return fmt.Errorf("error creating Area backend class: %v", err)
}
// // TODO rename this function (it overrides anyway)
// addAreaViewDrawMethod() is in bleh_darwin.m
ok := C.addAreaViewDrawMethod(areaclass)
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
var (
_NSView = objc_getClass("NSView")
_NSView_Class = C.object_getClass(_NSView)
)
func makeAreaClass(name string) (C.Class, error) {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
c := C.objc_allocateClassPair(_NSView_Class, cname, 0)
if c == C.NilClass {
return C.NilClass, fmt.Errorf("unable to create Objective-C class %s for Area; reason unknown", name)
}
C.objc_registerClassPair(c)
return c, nil
}
var (
// delegate_rect in bleh_darwin.m
)
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