mac: fix unexpected return of forcePosition

Int32(VO_WIN_FORCE_POS) == 1, regardless of `--force-window-position`

video/out/mac/common.swift

@@ -75,7 +75,7 @@ class Common: NSObject {
     }
 
     func initWindow(_ vo: UnsafeMutablePointer<vo>, _ previousActiveApp: NSRunningApplication?) {
-        let (targetScreen, wr, _) = getInitProperties(vo)
+        let (targetScreen, wr, forcePosition) = getInitProperties(vo)
 
         guard let view = self.view else {
             log.error("Something went wrong, no View was initialized")
@@ -104,6 +104,12 @@ class Common: NSObject {
         window.setMinimized(minimized)
         window.makeMain()
         window.makeKey()
+        window.isMovable = !forcePosition
+        if forcePosition {
+            NSEvent.addLocalMonitorForEvents(matching: [.leftMouseDragged]) { [weak self] event in
+                return nil
+            }
+        }
 
         view.layer?.contentsScale = window.backingScaleFactor
 
@@ -411,6 +417,7 @@ class Common: NSObject {
 
     func getWindowGeometry(forScreen screen: NSScreen,
                            videoOut vo: UnsafeMutablePointer<vo>) -> (NSRect, Bool) {
+        let option = OptionHelper(vo, vo.pointee.global)
         let r = screen.convertRectToBacking(screen.frame)
         let targetFrame = option.mac.macos_geometry_calculation == FRAME_VISIBLE
             ? screen.visibleFrame : screen.frame
@@ -437,7 +444,7 @@ class Common: NSObject {
         let y = CGFloat(-geo.win.y1)
         let x = CGFloat(geo.win.x0)
         let wr = screen.convertRectFromBacking(NSRect(x: x, y: y, width: width, height: height))
-        return (wr, Bool(geo.flags & Int32(VO_WIN_FORCE_POS)))
+        return (wr, Bool(geo.flags & Int32(option.vo.force_window_position)))
     }
 
     func getInitProperties(_ vo: UnsafeMutablePointer<vo>) -> (NSScreen, NSRect, Bool) {