shiny/driver/internal/win32: restore normalize / minimize / maximze

inputLoop.go

@@ -28,6 +28,9 @@ var (
 	// InputChange is triggered when the most recent input device changes (e.g. keyboard to joystick or vice versa). It
 	// is only sent if Config.TrackInputChanges is true when Init is called.
 	InputChange = event.RegisterEvent[InputType]()
+	// WindowSizeChange is triggered when a desktop window is resized automatically or via user request.
+	// A call to ChangeWindow does not trigger this.
+	WindowSizeChange = event.RegisterEvent[intgeom.Point2]()
 )
 
 func (w *Window) inputLoop() {
@@ -106,6 +109,7 @@ func (w *Window) inputLoop() {
 
 		// Size events update what we scale the screen to
 		case size.Event:
+			event.TriggerOn(w.eventHandler, WindowSizeChange, intgeom.Point2{e.WidthPx, e.HeightPx})
 			err := w.ChangeWindow(e.WidthPx, e.HeightPx)
 			dlog.ErrorCheck(err)
 		}

shiny/driver/internal/win32/helpers.go

@@ -0,0 +1,13 @@
+package win32
+
+func Minimize(hwnd HWND) bool {
+	return ShowWindow(hwnd, _SW_MINIMIZE)
+}
+
+func Maximize(hwnd HWND) bool {
+	return ShowWindow(hwnd, _SW_SHOWMAXIMIZED)
+}
+
+func Normalize(hwnd HWND) bool {
+	return ShowWindow(hwnd, _SW_SHOWNORMAL)
+}

shiny/driver/internal/win32/syscall_windows.go

@@ -71,7 +71,11 @@ const (
 const (
 	_CW_USEDEFAULT = 0x80000000 - 0x100000000
 
-	_SW_SHOWDEFAULT = 10
+	_SW_SHOWNORMAL    = 1
+	_SW_SHOWMINIMIZED = 2
+	_SW_SHOWMAXIMIZED = 3
+	_SW_MINIMIZE      = 6
+	_SW_SHOWDEFAULT   = 10
 
 	_SWP_NOSIZE = 0x0001
 )

shiny/driver/windriver/window.go

@@ -501,3 +501,29 @@ func (w *Window) SetTopMost(topMost bool) error {
 	w.topMost = topMost
 	return nil
 }
+
+func (w *Window) GetDesktopPosition() (x, y float64) {
+	w.windowRect, _ = win32.GetWindowRect(w.hwnd)
+	return float64(w.windowRect.Left), float64(w.windowRect.Top)
+}
+
+func (w *Window) Minimize() error {
+	if !win32.Minimize(w.hwnd) {
+		return fmt.Errorf("minimize failed")
+	}
+	return nil
+}
+
+func (w *Window) Maximize() error {
+	if !win32.Maximize(w.hwnd) {
+		return fmt.Errorf("maximize failed")
+	}
+	return nil
+}
+
+func (w *Window) Normalize() error {
+	if !win32.Normalize(w.hwnd) {
+		return fmt.Errorf("normalize failed")
+	}
+	return nil
+}

window/window.go

@@ -25,7 +25,6 @@ type Window interface {
 	// component.
 	SetIcon(image.Image) error
 	// MoveWindow moves a window to the given x,y coordinates with the given dimensions.
-	// TODO v4: intgeom.Rect2?
 	MoveWindow(x, y, w, h int) error
 	// HideCursor will cause the mouse cursor to not display when it lies within this window.
 	HideCursor() error