internal/restorable: remove 'volatile' attribute when restorable is not used

internal/restorable/image.go

@@ -169,9 +169,11 @@ func NewImage(width, height int, imageType ImageType) *Image {
 	}
 
 	var attribute string
-	switch imageType {
+	if needsRestoration() {
-	case ImageTypeVolatile:
+		switch imageType {
-		attribute = "volatile"
+		case ImageTypeVolatile:
+			attribute = "volatile"
+		}
 	}
 	i := &Image{
 		image:     graphicscommand.NewImage(width, height, imageType == ImageTypeScreen, attribute),

internal/ui/window.go

@@ -43,6 +43,7 @@ type Window interface {
 	IsClosingHandled() bool
 	SetMousePassthrough(enabled bool)
 	IsMousePassthrough() bool
+	RequestAttention()
 }
 
 type nullWindow struct{}
@@ -128,3 +129,6 @@ func (*nullWindow) SetMousePassthrough(enabled bool) {
 func (*nullWindow) IsMousePassthrough() bool {
 	return false
 }
+
+func (*nullWindow) RequestAttention() {
+}

internal/ui/window_glfw.go

@@ -506,3 +506,19 @@ func (w *glfwWindow) IsMousePassthrough() bool {
 	})
 	return v
 }
+
+func (w *glfwWindow) RequestAttention() {
+	if w.ui.isTerminated() {
+		return
+	}
+	if !w.ui.isRunning() {
+		// Do nothing
+		return
+	}
+	w.ui.mainThread.Call(func() {
+		if w.ui.isTerminated() {
+			return
+		}
+		w.ui.window.RequestAttention()
+	})
+}

window.go

@@ -341,3 +341,7 @@ func SetWindowMousePassthrough(enabled bool) {
 func IsWindowMousePassthrough() bool {
 	return ui.Get().Window().IsMousePassthrough()
 }
+
+func RequestWindowAttention() {
+	ui.Get().Window().RequestAttention()
+}