Merge pull request #35767 from timothyqiu/macos-diagonal-cursor

Adds diagonal cursors for macOS

platform/osx/os_osx.mm

@@ -115,6 +115,20 @@ static Vector2 get_mouse_pos(NSPoint locationInWindow, CGFloat backingScaleFacto
 	return Vector2(mouse_x, mouse_y);
 }
 
+static NSCursor *cursorFromSelector(SEL selector, SEL fallback = nil) {
+	if ([NSCursor respondsToSelector:selector]) {
+		id object = [NSCursor performSelector:selector];
+		if ([object isKindOfClass:[NSCursor class]]) {
+			return object;
+		}
+	}
+	if (fallback) {
+		// Fallback should be a reasonable default, no need to check.
+		return [NSCursor performSelector:fallback];
+	}
+	return [NSCursor arrowCursor];
+}
+
 @interface GodotApplication : NSApplication
 @end
 
@@ -1813,15 +1827,15 @@ void OS_OSX::set_cursor_shape(CursorShape p_shape) {
 			case CURSOR_BUSY: [[NSCursor arrowCursor] set]; break;
 			case CURSOR_DRAG: [[NSCursor closedHandCursor] set]; break;
 			case CURSOR_CAN_DROP: [[NSCursor openHandCursor] set]; break;
-			case CURSOR_FORBIDDEN: [[NSCursor arrowCursor] set]; break;
-			case CURSOR_VSIZE: [[NSCursor resizeUpDownCursor] set]; break;
-			case CURSOR_HSIZE: [[NSCursor resizeLeftRightCursor] set]; break;
-			case CURSOR_BDIAGSIZE: [[NSCursor arrowCursor] set]; break;
-			case CURSOR_FDIAGSIZE: [[NSCursor arrowCursor] set]; break;
+			case CURSOR_FORBIDDEN: [[NSCursor operationNotAllowedCursor] set]; break;
+			case CURSOR_VSIZE: [cursorFromSelector(@selector(_windowResizeNorthSouthCursor), @selector(resizeUpDownCursor)) set]; break;
+			case CURSOR_HSIZE: [cursorFromSelector(@selector(_windowResizeEastWestCursor), @selector(resizeLeftRightCursor)) set]; break;
+			case CURSOR_BDIAGSIZE: [cursorFromSelector(@selector(_windowResizeNorthEastSouthWestCursor)) set]; break;
+			case CURSOR_FDIAGSIZE: [cursorFromSelector(@selector(_windowResizeNorthWestSouthEastCursor)) set]; break;
 			case CURSOR_MOVE: [[NSCursor arrowCursor] set]; break;
 			case CURSOR_VSPLIT: [[NSCursor resizeUpDownCursor] set]; break;
 			case CURSOR_HSPLIT: [[NSCursor resizeLeftRightCursor] set]; break;
-			case CURSOR_HELP: [[NSCursor arrowCursor] set]; break;
+			case CURSOR_HELP: [cursorFromSelector(@selector(_helpCursor)) set]; break;
 			default: {
 			};
 		}