TODO 优化控件布局语法

example/src/main.cpp

@@ -65,9 +65,6 @@ int main(int argc, char* argv[]) {
 	text_block->set_text(config_info_str);
 	// text_block->set_text(U"Hello, World! 你好，世界!\n换行测试1111，测试测试测试测试,测试测试😀🐵🙏 😃🐵🙏");
 
-	const auto& text_block2 = std::make_shared<mtext_block>();
-	text_block2->set_text(U"Hello, World!");
-
 	const auto& window = mwindow::create({ 800, 600 }, L"Hello, World!");
 	window->set_content(
 		mnew(mv_box)
@@ -78,7 +75,8 @@ int main(int argc, char* argv[]) {
 			[
 				mslot(mbutton)
 				.margin({ 10 })
-				.visibility(visibility_t::visible)(text_block)
+				.visibility(visibility_t::visible)
+				+text_block
 			],
 
 			mslot(mv_box)
@@ -88,7 +86,9 @@ int main(int argc, char* argv[]) {
 				mslot(mbutton)
 				.margin({ 10 })
 				.visibility(visibility_t::visible)
-				(text_block2)
+				+mnew(mtext_block)
+				->set_text(U"Hello, World!")
+				->set_font_size(24)
 			]
 		]
 	);

src/mirage_widget/src/widget/leaf_widget/mtext_block.h

@@ -6,31 +6,42 @@ class font_face_interface;
 
 class mtext_block : public mleaf_widget {
 public:
+
 	void on_paint(mirage_paint_context& in_context) override;
 
-	void set_text(const std::u32string& in_text) {
+	auto set_text(const std::u32string& in_text) {
 		text_ = in_text;
 		update_layout();
+		using this_type = std::remove_reference_t<decltype(*this)>;
+		return std::static_pointer_cast<this_type>(shared_from_this());
 	}
 
-	void set_font(const std::shared_ptr<font_face_interface>& in_font) {
+	auto set_font(const std::shared_ptr<font_face_interface>& in_font) {
 		font_ = in_font;
 		update_layout();
+		using this_type = std::remove_reference_t<decltype(*this)>;
+		return std::static_pointer_cast<this_type>(shared_from_this());
 	}
 
-	void set_font_size(float in_font_size) {
+	auto set_font_size(float in_font_size) {
 		font_size_ = in_font_size;
 		update_layout();
+		using this_type = std::remove_reference_t<decltype(*this)>;
+		return std::static_pointer_cast<this_type>(shared_from_this());
 	}
 
-	void set_line_spacing(float in_line_spacing) {
+	auto set_line_spacing(float in_line_spacing) {
 		line_spacing_ = in_line_spacing;
 		update_layout();
+		using this_type = std::remove_reference_t<decltype(*this)>;
+		return std::static_pointer_cast<this_type>(shared_from_this());
 	}
 
-	void set_max_width(float in_max_width) {
+	auto set_max_width(float in_max_width) {
 		max_width_ = in_max_width;
 		update_layout();
+		using this_type = std::remove_reference_t<decltype(*this)>;
+		return std::static_pointer_cast<this_type>(shared_from_this());
 	}
 
 	const auto& get_text() const { return text_; }

src/mirage_widget/src/widget/mwidget.h

@@ -8,9 +8,7 @@ class mwindow;
 
 /**
  * @class mwidget
- * @brief UI组件包装器
- *
- * 对widget entity的封装，提供了组件的基本功能。
+ * @brief UI组件的基类
  */
 class mwidget : public std::enable_shared_from_this<mwidget> {
 public:

src/mirage_widget/src/widget/widget_new.h

@@ -30,6 +30,9 @@ struct mwidget_decl {
 	auto operator[](Args&&... in_args) {
 		return std::static_pointer_cast<WidgetType>((*widget_)[std::forward<Args>(in_args)...]);
 	}
+	auto operator->() {
+		return widget_.get();
+	}
 
     operator std::shared_ptr<mwidget>() const { return widget_; }
     std::shared_ptr<WidgetType> widget_;