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
+
+	// MinimizeButtonHidden hide the window's minimize button (only works for windows and macOS)
+	MinimizeButtonHidden bool
+	// MaximizeButtonHidden hide the window's maximize button (only works for windows and macOS)
+	MaximizeButtonHidden 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

@@ -495,8 +495,11 @@ func (w *window) Configure(options []Option) {
 	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)
+	// no decorated or hide minimize and maximize buttons
+	w.config.MinimizeButtonHidden = cnf.MinimizeButtonHidden
+	w.config.MaximizeButtonHidden = cnf.MaximizeButtonHidden
+	C.setWindowStandardButtonHidden(window, C.NSWindowMiniaturizeButton, toInt(!cnf.Decorated || cnf.MinimizeButtonHidden))
+	C.setWindowStandardButtonHidden(window, C.NSWindowZoomButton, toInt(!cnf.Decorated || cnf.MaximizeButtonHidden))
 	// When toggling the titlebar, the layer doesn't update its frame
 	// until the next resize. Force it.
 	C.resetLayerFrame(w.view)
@@ -1161,6 +1164,14 @@ 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

@@ -750,16 +750,20 @@ func (w *window) Configure(options []Option) {
 		swpStyle |= windows.SWP_NOMOVE | windows.SWP_NOSIZE
 		showMode = windows.SW_SHOWMAXIMIZED
 	}
-
-	// Disable maximize button if MaxSize is set.
-	if cnf.MaxSize != (image.Point{X: 0, Y: 0}) {
+	if w.config.MinimizeButtonHidden {
+		style &^= windows.WS_MINIMIZEBOX
+	} else {
+		style |= windows.WS_MINIMIZEBOX
+	}
+	if w.config.MaximizeButtonHidden {
 		style &^= windows.WS_MAXIMIZEBOX
-		// Disable window resizing if MinSize and MaxSize are equal.
-		if cnf.MinSize == cnf.MaxSize {
-			style &^= windows.WS_THICKFRAME
-		}
+	} else {
+		style |= windows.WS_MAXIMIZEBOX
+	}
+	// Disable window resizing if MinSize and MaxSize are equal.
+	if cnf.MaxSize != (image.Point{X: 0, Y: 0}) && cnf.MinSize == cnf.MaxSize {
+		style &^= windows.WS_THICKFRAME
 	}
-
 	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

@@ -972,6 +972,24 @@ func Decorated(enabled bool) Option {
 	}
 }
 
+// MinimizeButtonHidden hides the minimize button of the window.
+//
+// MinimizeButtonHidden is supported on Windows and macOS.
+func MinimizeButtonHidden(hidden bool) Option {
+	return func(_ unit.Metric, cnf *Config) {
+		cnf.MinimizeButtonHidden = hidden
+	}
+}
+
+// MaximizeButtonHidden hides the maximize button of the window.
+//
+// MaximizeButtonHidden is supported on Windows and macOS.
+func MaximizeButtonHidden(hidden bool) Option {
+	return func(_ unit.Metric, cnf *Config) {
+		cnf.MaximizeButtonHidden = 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.