ebiten/ui/cocoa/window.go
2013-12-08 22:22:54 +09:00

65 lines
1.2 KiB
Go

package cocoa
// #include <stdlib.h>
//
// void* CreateWindow(size_t width, size_t height, const char* title, void* glContext);
// void* CreateGLContext(void* sharedGLContext);
//
// void* GetGLContext(void* window);
// void UseGLContext(void* glContext);
// void UnuseGLContext(void);
//
import "C"
import (
"runtime"
"unsafe"
)
type window struct {
native unsafe.Pointer
funcs chan func()
funcsDone chan struct{}
}
func runWindow(width, height int, title string, sharedContext unsafe.Pointer) *window {
w := &window{
funcs: make(chan func()),
funcsDone: make(chan struct{}),
}
cTitle := C.CString(title)
defer C.free(unsafe.Pointer(cTitle))
ch := make(chan struct{})
go func() {
runtime.LockOSThread()
glContext := C.CreateGLContext(sharedContext)
w.native = C.CreateWindow(C.size_t(width),
C.size_t(height),
cTitle,
glContext)
close(ch)
w.loop()
}()
<-ch
return w
}
func (w *window) loop() {
for {
select {
case f := <-w.funcs:
glContext := C.GetGLContext(w.native)
C.UseGLContext(glContext)
f()
C.UnuseGLContext()
w.funcsDone <- struct{}{}
}
}
}
func (w *window) UseContext(f func()) {
w.funcs <- f
<-w.funcsDone
}