app: add support to hidden minimize and maximize buttons on macos and …

app/os.go

@@ -45,6 +45,12 @@ type Config struct {
 	CustomRenderer bool
 	// Decorated reports whether window decorations are provided automatically.
 	Decorated bool
+
+	// HiddenMinimizeButton hide the window's minimize button
+	HiddenMinimizeButton bool
+	// HiddenMaximizeButton hide the window's maximize button
+	HiddenMaximizeButton bool
+
 	// Focused reports whether has the keyboard focus.
 	Focused bool
 	// decoHeight is the height of the fallback decoration for platforms such

app/os_macos.go

@@ -445,6 +445,14 @@ func (w *window) Configure(options []Option) {
 			C.setMaxSize(window, C.CGFloat(cnf.MaxSize.X), C.CGFloat(cnf.MaxSize.Y))
 		}
 	}
+	if cnf.Decorated != prev.Decorated || cnf.HiddenMinimizeButton != prev.HiddenMinimizeButton {
+		hidden := toInt(!cnf.Decorated || cnf.HiddenMinimizeButton)
+		C.setWindowStandardButtonHidden(window, C.NSWindowMiniaturizeButton, hidden)
+	}
+	if cnf.Decorated != prev.Decorated || cnf.HiddenMaximizeButton != prev.HiddenMaximizeButton {
+		hidden := toInt(!cnf.Decorated || cnf.HiddenMaximizeButton)
+		C.setWindowStandardButtonHidden(window, C.NSWindowZoomButton, hidden)
+	}
 	if cnf.Decorated != prev.Decorated {
 		w.config.Decorated = cnf.Decorated
 		mask := C.getWindowStyleMask(window)
@@ -458,12 +466,11 @@ func (w *window) Configure(options []Option) {
 			barTrans = C.YES
 			titleVis = C.NSWindowTitleHidden
 		}
+
 		C.setWindowTitlebarAppearsTransparent(window, barTrans)
 		C.setWindowTitleVisibility(window, titleVis)
 		C.setWindowStyleMask(window, mask)
 		C.setWindowStandardButtonHidden(window, C.NSWindowCloseButton, barTrans)
-		C.setWindowStandardButtonHidden(window, C.NSWindowMiniaturizeButton, barTrans)
-		C.setWindowStandardButtonHidden(window, C.NSWindowZoomButton, barTrans)
 		// When toggling the titlebar, the layer doesn't update its frame
 		// until the next resize. Force it.
 		C.resetLayerFrame(w.view)
@@ -1072,6 +1079,14 @@ func convertMods(mods C.NSUInteger) key.Modifiers {
 	return kmods
 }
 
+// toInt golang bool to C.int
+func toInt(v bool) C.int {
+	if v {
+		return C.int(C.YES)
+	}
+	return C.int(C.NO)
+}
+
 func (AppKitViewEvent) implementsViewEvent() {}
 func (AppKitViewEvent) ImplementsEvent()     {}
 func (a AppKitViewEvent) Valid() bool {

app/os_windows.go

@@ -745,6 +745,16 @@ func (w *window) Configure(options []Option) {
 		height = mi.Monitor.Bottom - mi.Monitor.Top
 		showMode = windows.SW_SHOWMAXIMIZED
 	}
+	if w.config.HiddenMinimizeButton {
+		style &^= windows.WS_MINIMIZEBOX
+	} else {
+		style |= windows.WS_MINIMIZEBOX
+	}
+	if w.config.HiddenMaximizeButton {
+		style &^= windows.WS_MAXIMIZEBOX
+	} else {
+		style |= windows.WS_MAXIMIZEBOX
+	}
 	windows.SetWindowLong(w.hwnd, windows.GWL_STYLE, style)
 	windows.SetWindowPos(w.hwnd, 0, x, y, width, height, swpStyle)
 	windows.ShowWindow(w.hwnd, showMode)

app/window.go

@@ -963,6 +963,20 @@ func Decorated(enabled bool) Option {
 	}
 }
 
+// HiddenMinimizeButton controls whether show minimize button on macos and windows
+func HiddenMinimizeButton(hidden bool) Option {
+	return func(_ unit.Metric, cnf *Config) {
+		cnf.HiddenMinimizeButton = hidden
+	}
+}
+
+// HiddenMaximizeButton controls whether show maximize button on macos and windows
+func HiddenMaximizeButton(hidden bool) Option {
+	return func(_ unit.Metric, cnf *Config) {
+		cnf.HiddenMaximizeButton = hidden
+	}
+}
+
 // flushEvent is sent to detect when the user program
 // has completed processing of all prior events. Its an
 // [io/event.Event] but only for internal use.