New alternate scrollbar style, used by default in dialogs

src/classes/location.cpp

@@ -153,6 +153,14 @@ rectangle_size_delegate rectangle::height() {
 	return rectangle_size_delegate(*this, &rectangle::top, &rectangle::bottom);
 }
 
+const rectangle_size_delegate rectangle::width() const {
+	return rectangle_size_delegate(*const_cast<rectangle*>(this), &rectangle::left, &rectangle::right);
+}
+
+const rectangle_size_delegate rectangle::height() const {
+	return rectangle_size_delegate(*const_cast<rectangle*>(this), &rectangle::top, &rectangle::bottom);
+}
+
 location rectangle::centre() {
 	return location((left + right) / 2, (top + bottom) / 2);
 }

src/classes/location.hpp

@@ -67,6 +67,8 @@ struct rectangle {
 	rectangle(sf::Vector2<T> size) : rectangle(0, 0, size.y, size.x) {}
 	rectangle_size_delegate width();
 	rectangle_size_delegate height();
+	const rectangle_size_delegate width() const;
+	const rectangle_size_delegate height() const;
 	location centre();
 	location topLeft();
 	location topRight();