internal/ui: bug fix: recover the cursor mode when capturing fails

Closes #2764

cursor.go

@@ -44,3 +44,21 @@ const (
 	CursorShapeMove       CursorShapeType = CursorShapeType(ui.CursorShapeMove)
 	CursorShapeNotAllowed CursorShapeType = CursorShapeType(ui.CursorShapeNotAllowed)
 )
+
+// CursorShape returns the current cursor shape.
+//
+// CursorShape returns CursorShapeDefault on mobiles.
+//
+// CursorShape is concurrent-safe.
+func CursorShape() CursorShapeType {
+	return CursorShapeType(ui.Get().CursorShape())
+}
+
+// SetCursorShape sets the cursor shape.
+//
+// If the platform doesn't implement the given shape, the default cursor shape is used.
+//
+// SetCursorShape is concurrent-safe.
+func SetCursorShape(shape CursorShapeType) {
+	ui.Get().SetCursorShape(ui.CursorShape(shape))
+}

internal/ui/ui_js.go

@@ -539,6 +539,10 @@ func (u *UserInterface) init() error {
 	}))
 	document.Call("addEventListener", "pointerlockerror", js.FuncOf(func(this js.Value, args []js.Value) any {
 		js.Global().Get("console").Call("error", "pointerlockerror event is fired. 'sandbox=\"allow-pointer-lock\"' might be required at an iframe. This function on browsers must be called as a result of a gestural interaction or orientation change.")
+		if u.cursorMode == CursorModeCaptured {
+			u.recoverCursorMode()
+		}
+		u.recoverCursorPosition()
 		return nil
 	}))
 	document.Call("addEventListener", "fullscreenerror", js.FuncOf(func(this js.Value, args []js.Value) any {

run.go

@@ -409,24 +409,6 @@ func SetCursorMode(mode CursorModeType) {
 	ui.Get().SetCursorMode(ui.CursorMode(mode))
 }
 
-// CursorShape returns the current cursor shape.
-//
-// CursorShape returns CursorShapeDefault on mobiles.
-//
-// CursorShape is concurrent-safe.
-func CursorShape() CursorShapeType {
-	return CursorShapeType(ui.Get().CursorShape())
-}
-
-// SetCursorShape sets the cursor shape.
-//
-// If the platform doesn't implement the given shape, the default cursor shape is used.
-//
-// SetCursorShape is concurrent-safe.
-func SetCursorShape(shape CursorShapeType) {
-	ui.Get().SetCursorShape(ui.CursorShape(shape))
-}
-
 // IsFullscreen reports whether the current mode is fullscreen or not.
 //
 // IsFullscreen always returns false on mobiles.